Wavetek 3000 Instruction Manual
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Serial No .
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/2_5 q s 1
THIS DOCUMENT CONTAINS INFORMATION PROPRIETARY TO WAVETEK . THE INFORMATION IN THIS DOCUMENT
IS NOT TO BE USED OR DUPLICATED IN ANY MANNER WITHOUT THE PRIOR APPROVAL, IN WRITING OF WAVETEK
.
WAVETEK RF PRODUCTS, INC .
5808 CHURCHMAN BY-PASS
INDIANAPOLIS, IN 46203-6109
TEL . 317/788-9351
TLX : (INST .) 6842041
FAX : 317/788-5999
2-88
All Wavetek instruments are warranteed against defects in material and workmanship for a period
of one year after date of manufacture . Wavetek agrees to repair or replace any assembly or
component
(except
batteries)
found
to
be defective under normal
use during
this period .
Transfermatic Switch assemblies, manufactured by Wavetek, are unconditionally warranteed for
the life of the instrument . Wavetek's obligation under this warranty is limited solely to repairing
any such instrument which, in Wavetek's sole opinion, proves to be defective within the scope of
the warranty when returned to the factory or to an authorized service center . Transportation to
the factory or service center is to be prepaid by purchaser . Shipment should not be made without
prior authorization by Wavetek .
This warranty does not apply to any products repaired or altered by persons not authorized by
Wavetek, or not
in accordance with instructions furnished by Wavetek .
If the instrument
is
defective as a result of misuse, improper repair, or abnormal conditions or operations, repairs will
be billed at cost .
Wavetek assumes no responsibility for its product being used in a hazardous or dangerous manner
either alone or in conjunction with other equipment . High voltage used in some instruments may
be dangerous
if misused . Special disclaimers apply to these instruments . Wavetek assumes no
liability for secondary charges or consequential damages and, in any event, Wavetek's liability for
breach of warranty under any contract or otherwise shall not exceed the purchase price of the
specific instrument shipped and against which a claim is made .
Any recommendations made by Wavetek for use of its products are based upon tests believed to
be reliable, but Wavetek makes no warranty of the results to be obtained . This warranty is in lieu
of all other warranties, expressed or implied, and no representative or person is authorized to
represent or assume for Wavetek any liability in connection with the sale of our products other
than set forth herein .
SCOPE OF THIS MANUAL
This manual provides descriptive material and instructions for the installation, operation, main-
tenance, and repair of the WAVE-IEK Model 3000 Signal Generator
MECHANICAL INSTALLATION .
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2-1
2 .3
ELECTRICAL INSTALLATION .
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2-2
2 .4
DESCRIPTION OF FRONT PANEL
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2-2
2 .5
DESCRIPTION OF REAR PANEL .
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2 .6
INSTALLATION
CHECKS
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2 .7
OPERATING PROCEDURE .
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THEORY OF OPERATION
3 .1
INTRODUCTION
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3-1
3 .2
OVERALL BLOCK DIAGRAM .
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3 .3
C315 - METER BOARD
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3-8
3 .4
C316 - MODULATION BOARD .
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3 .5
DPS2A - POWER SUPPLY
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3-10
3 .6
DELETED
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3-10
3 .7
M9W - SWEEP OSCILLATOR
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3-11
3 .8
M10W - OUTPUT AMPLIFIER .
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3-12
3 .9
M172 - SWEEP DRIVE/DAC
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3-13
3 .10
M29-1
FM REFERENCE
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3-14
3 .11
M30 - CRYSTAL SOURCE
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3-15
3 .12
M31 - kHz STEPS .
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3 .13
M32 - MHz STEPS .
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3-17
3 .14
M33 - NARROW OSCILLATOR LOCK
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3-19
3 .15
M34 - WIDE OSCILLATOR LOCK
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3-20
PERFORMANCE TESTS
4 .1
INTRODUCTION
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4 .2
FREQUENCY RANGE AND RESOLUTION TEST .
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4 .3
FREQUENCY ACCURACY TEST .
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4-3
4 .4
FREQUENCY STABILITY TEST
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4-5
4 .5
OUTPUT LEVEL ACCURACY TESTS .
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4-5
4 .6
HARMONICS TEST
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4-11
4 .7
NON-HARMONIC TEST .
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4-12
4 .8
RESIDUAL AM TEST
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4-14
4 .9
RESIDUAL FM TEST
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4-15
4 .10
INTERNAL MODULATION FREQUENCY TEST
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4-16
4 .11
PERCENT AM ACCURACY TEST
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4-17
4 .12
AM BANDWIDTH TEST .
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4-19
4 .13
AM DISTORTION TEST
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4-21
4 .14
FM DEVIATION ACCURACY TEST
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4-22
4 .15
FM BANDWIDTH TEST .
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FM DISTORTION TEST .
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4-25
4 .17
IMPEDANCE TEST .
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4-26
4 .18
RFI TEST .
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4-27
SECTION 5
MAINTENANCE
5 .1
INTRODUCTION .
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5-1
5 .2
SERVICE INFORMATION
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5-1
5 .3
CALIBRATION PROCEDURE
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5-3
5 .4
TROUBLESHOOTING
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5-7
SECTION 6
REPLACEABLE PARTS
6 .1
INTRODUCTION .
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6-1
6 .2
MANUFACTURER'S CODE
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6-1
SECTION
7
SCHEMATICS
7 .1
INTRODUCTION. .
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7-1
7 .2
SCHEMATIC NOTES
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7-1
7 .3
ABBREVIATION CODE
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7-2
7 .4
SCHEMATIC INDEX
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7-2
SECTION 8
MANUAL CHANGES AND OPTIONS
8 .1
INTRODUCTION.
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8-1
8 .2
MANUAL CHANGES .
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8-1
8 .3
OPTIONS
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8-1
The Model 3000 is a rugged,
completely
solid-state
Signal Generator
covering
the frequency
range of
1
to 520
MHz .
The output can be amplitude or frequency
modulated and
the level can be set be-
tween +13 and -137 dBm .
1 .1 .1
Frequency Characteristics
The frequency
of the unit is set via 6
front
panel
lever/indicator
switches
which yield a resolution of
1 kHz .
In
addition,
remote
frequency
program
mability is standard .
This feature makes
the Mode1 .3000 Signal Generator ideally
suited for both semi and fully automatic
test applications .
The accuracy of the instrument is based
on a crystal-controlled
oscillator that
serves as a stable frequency source for
the
derivation of
various
reference
frequencies .
These reference frequencies
arefed to phase locked loops that enable
the Model 3000 to provide high stability
signals
to an
accuracy of 0 .0017 over
its specified
1 MHz
to 520 MHz
range .
In the CW and AM modes of operation the
overall accuracy
of the unit is 0 .0017
including
short term drift,
long term
drift,
incidental FM and variations due
to line voltage changes and temperature
changes .
In the FM mode,
the frequency
is
accurate to 0 .0017 t10 kHz up to
5
kHz peak deviation and 0.0017 t45 kHz up
to 500 kHz peak deviation .
1 .1 .2
Modulation Features
The Model 3000 also features both inter-
nal and external amplitude and frequency
SECTION 1
GENERAL INFORMATION
modulation
capabilities .
Internal
modulation frequencies
of 400 Hz and
1
kHz are available .
In the FM mode
of
operation,
peak deviations
up to 500
kHz are attainable .
In the AM mode amp-
litude modulation to 907 is
- attainable .
With the MODULATION MODE switch in either
of the FM positions
and the MODULATION
FREQUENCY
switch
in the
vernier posi-
tion, the front panel slide control po-
tentiometer can be used to continuously
vary the output frequency over either a
5 kHz or 500 kHz range .
With the MODULATION
MODE switch in the
AM position and the MODULATION FREQUENCY
switch in the vernier position the out-
put amplitude
can
be varied
via
the
same front
panel slide control .
This
provides
a
reference
attenuator
for
variation
of a signal
level around
a
specific point of interest .
This oper-
ation can also enable the user to obtain
greater
than 20
milliwatts of
power
over portions of the band .
1 .1 .3
Output Level Features
The
output
power
is
indicated
on a
front panel
meter calibrated
in
both
dBm and Vrms .
A fifteen-position,
10
dB step attenuator
used in conjunction
with an
11
dB vernier control provides
the user with
a
range of
+13 dBm
to
-137 dBm .
The calibrated output of the
Model 3000 is
leveled to
within ±0 .75
dB across
the complete frequency range
of the instrument .
1 .2 .1
Frequency
RANGE
READOUT
RESOLUTION
ACCURACY
STABILITY
1 .2 .2
RF Output Level
POWER LEVEL RANGE
LEVEL CONTROL
TOTAL LEVEL ACCURACY
ACCURACY BREAKDOWN
1 .2 .3
Output Characteristics
IMPEDANCE
SWR
1 .2 .4
Spectral Purity
HARMONIC OUTPUT
SUB-HARMONICS
1 MHz to 520 MHz selectable in
1 kHz steps .
6 digit lever/indicator switches
1 kHz
CW and AM modes
±0 .001% after 15 min .
(Typ ±0 .0002% after 2 hours within
3 months of calibration)
FMx1 mode
±(0 .001% +10 kHz)
FMx100 mode
±(0 .001% +45 kHz)
CW and AM modes
<0 .2 ppm/hr .
FMx1 mode
500 Hz/10 min .
+13 dBm to -137 dBm
(1 V to
.03 vV)
Continuously adjustable in 10 dB steps and
with an
11 dB vernier .
Output level is in-
dicated on a front panel meter
calibrated
in volts and dBm .
+13 to -7 dBm :
±1 .25 dB
(Typ ±0 .75 dB)
-7 to -77 dBm :
±1 .95 dB
(Typ ±1 .25 dB)
<-77 dBm
±2 .75 dB
(Typ ±1 .5
dB)
Flatness
(+13 to -7 dBm) :
±0 .75 dB
(Typ ±0 .5 dB)
Output Meter :
±0 .5 dB
Step Attenuator :
±0 .5 dB to 70 dB
(±0 .2 dB calibration error)
±1 .0 dB to 130 dB
(±0 .5 dB calibration error)
50 ohms
<1 .2 at RF output levels below 0 .1 V
>30 dB below fundamental from 10 to 520 MHz
>26 dB below fundamental
from 1 to 10 MHz
None detectable
>65 dB below
carrier
in a 50 Hz to
15 kHz
post-detection bandwidth .
RESIDUAL FM
1 .2 .5
Amplitude Modulation
NOTE :
These
specifications
apply for
a
carrier level <+3 dBm .
AM is possible above
+3 dBm if the peak
output does not exceed
+13 dBm .
FREQUENCY
Internal
400 Hz and
1 kHz ±5%
External
DC to 20 kHz,
(3 dB bandwidth),
input level
required = 10 volts p-p into 600 ohm
to pro-
vide calibrated % modulation control .
RANGE
0 to 90%
GENERAL INFORMATION
<200 Hz in 50 Hz to 15
kHz
post-detection
bandwidth . (Typ 100 Hz)
<100 Hz in 300 Hz to
3 kHz post-detection bandwidth . (Typ 50 Hz)
DISTORTION
<3% distortion to70% AM
(:<5% to 90% AM) at
a frequency of
1 kHz
(Typ <1 .5I to 30% AM)
MODULATION CONTROL
Calibrated from 0 to 1001
ACCURACY
t(5% of reading +5I) at a frequency of
1 kHz
1 .2 .6
Frequency Modulation
FREQUENCY
Internal
400 Hz and
1 kHz, ±5%
External
DC to 25 kHz,
(1 dB bandwidth),
input level
required= 10 volts p-p into 600 ohms to pro-
vide calibrated deviation control .
DEVIATION PEAK
Two bands,
0 to
5 kHz,
and 0 to 500 kHz
DEVIATION CONTROL
Calibrated from 0 to 5 kHz, xl and x100
ACCURACY
±250 Hz on xl range
±35 kHz on x100 range
DISTORTION
<4%
(3 to 10 kHz deviation),
<2% (10 to 500
kHz deviation) at a frequency of
1 kHz
Fundamental
Non-Harmonic
Non-Harmonic
(MHz)
(MHz)
level (dB be-
low fundamental)
1 to 3
1 to
3
>60
3 to 250
3 to 250
>65
3 to 350
3 to 350
>55
3 to 520
3 to 1000
>35
1 .2 .7
Programmability
Frequency is
programmable via
rear panel
input connector using BCD-coded TTL voltages
or BCD-coded contact closures .
1 .2 .8
General
OPERATING TEMPERATURE
25 t5oC, all specifications apply
25 t150C, with slight degradation of speci-
fications
OUTPUT CONNECTOR
Type N
RFI
<1
VV is induced in a two-turn, one-inch
diameter loop which is held one inch away
from any surface .
Loop feeds a 50 ohm re-
ceiver ;
POWER
115/230 V ±10%,
50/60 Hz,
40 VA
DIMENSIONS
12 in .
(30 .3 cm) wide,
5k in .
(13 .4 cm)
high,
13 3/4 in .
(34 .9 am)
long
WEIGHT
25 lb .
(11 .4 kg) net,
30 lb .
(13 .6
kg)
shipping .
1 .3
OPTIONS
Options 1A, 1B, 4, and 7 are factory installed .
Option 3 may be factory or field installed .
1 .3 :1
RF Level Programming
For both Options
1A and 1B,
the instruments
are calibrated for +13 dBm at 50 MHz
like
a standard unit, but due to greater losses
in
Programmable Attenuators, a calibrated
output is only guaranteed to +12 dBm.
Option lA Program Level Range :
0 to 109 .9
dB
in
.1
dB
steps
(programmed
via
rear-panel plug) .
0
dB
reference is +13
dBm.
Front-panel
level
range :
Continuously adjustable
from +13
dBm
to
-97
dBm
in
10
dB steps
and
an 11
dB
VERNIER .
Reverse power protection is also
provided by this option .
Option 1B Program Level Range :
0 to 90 dB
in
10 dB steps
(programmed via rear-panel
plug) .
0 dB reference set by
front-panel
attenuators .
Remote control of CW/AM mode
is also provided .
Front-panel Level Range :
See Section 1 .2 .2 .
Reverse
power protection is also provided
by this option.
1 .3 .2
Reverse Power Protection
Option "3" prevents damage to the instrument
if DC (100 V max) or RF
(50 W max)voltages
are accidentally applied
to the RF output
connector .
(This
option is not
required
when using option lA or 1B) .
1 .3 .3
Auxiliary RF Output
Option "4" provides a
leveled
(-10
dBm)
signal available from a rear panel BNC con-
nector . Normally used to drive a frequency
counter .
1 .3 .4
Low Leakage
1 .4
ACCESSORIES
GENERAL INFORMATION
Option
7 reduces the leakage specification
of Section
1 .2 .2 by a factor of 10 .
Furnished with instrument
Instruction Manual
Rear-panel PROGRAMMING plug and pins
Additional Accessories
Rack Mount Kit, K108
Programmers for single push-button or GPIB
control of selected frequencies and output
levels, Series 3900 .
Module Service Kit, K004
section provides complete instal-
lation and operating instructions for the
Wavetek
Model 3000
signal
generator .
The instructions consist of
mechanical
installation,
electrical installation,
front and rear panel features,
instal-
lation checks and operating procedures .
2 .2
MECHANICAL INSTALLATION
2 .2 .1
Initial Inspection
After unpacking the instrument, visually
inspect the
external parts for
damage
to knobs, connectors, surface areas, etc .
The shipping container and packing mat-
erial should
be
saved
in
case it is
necessary
to reship the unit .
2 .2 .2
Damage Claims
If the instrument is received mechanically
damaged in transit,
notify the carrier
and
either the
nearest
Wavetek
area
representative or the factory in Indiana .
Figure
2- 1 .
K108 Rack Mount
Retain the
shipping carton and packing
material for the carrier's
inspection .
The local representative, or the factory
will immediately arrange for either the
replacement or repair of your instrument,
without waiting for damage claim settle-
ments .
2 .2 .3
Zack Mounting
(K108)
CONTENTS
Procedure :
(See Figure 2-1)
SECTION2
OPERATION
Remove the screws
from one side panel .
Mount
items A and B
against the side
panel of the instrument and secure with
the screws provided .
(Screws
D
are
longer than screws C .)
Repeat the op-
eration for the other side of the unit .
Item
Qty
Part No .
A (Insert)
2 ea
B001-145
B (Side)
2 ea
0001-146
C (Screw)
8 ea
HS101-808
D
(Screw)
4 ea
HS101-810
The instrument operates from either
115
volt AC or
230 volt AC supply mains as
selected by
a Slide Switch located
on
the rear panel .
Before operating
the
instrument,
check that the fuse mounted
in the Rear Panel Fuse
Holder
corres-
ponds to the
correct value for the se-
0
2-2
Figure 2-2 .
2 .4
DESCRIPTION OF FRONT PANEL
Lever Indicator Switches
lected voltage,
i .e .,
1 .0 amp for a 115
volt
AC and
0 .5
amp for 230 volt
AC .
The power supply
has been designed
to
operate from
either 50 or 60 Hz supply
mains .
Instruments are shipped from the factory
for operation at 115 volt
AC 60 Hz un-
less specified for 230 volt AC or 50
Hz
operation .
Front Panel
7
a
Select and indicate desired output frequency
from
1 to
520 MHz with a
1 kHz resolution .
FREQUENCY
OU
PUT
9
I-SYO MH
RMS
VOLTS
O ~
ACCURACY
.
1007
3700
td05
UNlE0LE0
-
-KHZ
KH
dBm
MODULATION
MODE
FREO
FM
AM
CW
VERNIER
4
90
VERNIER
AM
400Hz
3
50
FMxI
1KHz
z
\
a
'fff
FM x100
EXT
I0
0
POWER
RF out
off ~~
-
V
WAvETiE
model 3000
SIGNAL
GENERATOR
Indicate frequency accuracy.
�
±0 .001% in CW
and AM modes,
±(0 .001% + 10 kHz) in FMxl and
±(0 .001% + 45 kHz) in FMx100 .
�
Typically the
lamp will flash for a few seconds after power
is turned on .
�
Under
normal
�
operation a
steady
light indicates
that
the unit
is
phase-locked and the frequency accuracy in-
dication
is valid .
A continuously flashing
light indicates that one or more of the
�
phase
lock loops is open .
�
(The open loop can be
identified
by removing the
top cover
and
looking for the corresponding "module fault"
light .)
O3
Output Level Meter
�
Indicates output level
over a
10
dB range
in VRMS and dBm.
4O Unlevel Lamp
�
Indicates that the output level accuracy
�
is
not valid when the lamp is on .
O5
�
Attenuator
�
Controls the output level over a140 dB range
from +10
�
to -130 dBm .
�
The Attenuator dial
is calibrated in dB and VRMS .
6O Vernier
�
Controls
�
the
�
output
�
level
�
over an
11 dB
range .
O7
�
AM/FM Vernier
�
Is calibrated from O to 5 kHz FM peak devia
tion and from 0 to 90% AM.
�
This control per-
mits
precise
AM and FM settings
with the
mode switch in AM and FMxlor FMx100 respec-
tively and the frequency
switch in 400 Hz,
1 kHz or Ext .
The vernier also serves as a
manual amplitude and frequency control with
the frequency switch in vernier .
�
The vernier
provides
up to +6 dB amplitude change when
the mode switch is in
the AM and also pro-
vides up to a +5 kHz or up to +500 kHz fre-
quency change
when the
mode switch
is in
FMxl and FMx100 respectively .
Frequency Switch
Selects
vernier,
for
manual
amplitude or
frequencyicontrol, 400 Hz and 1 kHz internal
modulation and external modulation .
O9
�
Ext
�
Modulation input accepts a DC to 20 kHz sig-
nal for AM and a DC to 25 kHz for FM .
A 10
V peak-to-peak signal into
a 600 ohm impe
dance calibrates the AM/FM vernier full scale .
A lesser. input voltage will result in a pro-
portional full scale calibration of the AM/
FM vernier .
Therefore,
a
1 volt
peak-to-
peak signal into 600 ohms
will result in a
2-3
(D Ext continued
Mode Switch
RF out
Power Switch
2 .5
DESCRIPTION OF REAR PANEL
Switch 115/230 V
AC Line Fuse
WARNING
TO PREVENT ELECTRIC SHOCK, DO NOT
REMOVE COVERS. NO USER SERVICEABLE
PART INSIDE.
REFER SERVICING TO
QUALIFIED PERSONNEL
WARNING :
FOR CONTINUED PROTECTION AGAINST
FIRE HAZARD REPLACE ONLY WITH THE
SAME TYPE AND RATING OF FUSE
Figure 2-3 .
full scale calibration of 500 Hz peak devia-
tion in
FMxl, a 50 kHz
peak deviation
in
FMx100
or
10% amplitude modulation
in AM .
Selects CW,
AM,
FMxl
or
FMx100 operation .
Type N connector
provides a connection for
the RF output signal .
Provides AC power to the power supply .
Rear Panel
Selects either
115 volt AC
or 230 volt
AC
supply mains .
Before operating the instru-
ment checkthat the fuse mounted in the Rear
Panel Fuse Holder correspondsto the correct
value for the selected voltage .
1 .0
amp for
115 volt AC
or 0 .5 amp for 230
volt AC .
O
Input 50/60 Hz
�
3
prong AC plug provides
connection to AC
mains .
Modulation Test Point
2 .6
INSTALLATION CHECKS
The following procedure
is used to de-
termine that the instrument is operating
properly .
Performance testing and cal-
ibration of the instrument are contained
in other
sections of this manual .
If
it is determined
that the unit
is not
operating
properly or
is not
meeting
specifications,
refer to the
warranty
on the back of the title page .
2 .6 .1
Turn On
Verify that the power transformer primary
is matched to the line voltage available,
and that
the proper fuse is installed .
(See Section 2 .3 Electrical Installation)
Turn the front panel power switch to the
"ON" position .
One or more of the front
panel accuracy lights will be illuminated
Provides connection for programming of fre-
quency .
Monitors internal or external AM or FM modu-
lation .
BNC TEE
SO SZ
LOAD
Figure 2-4 .
Test Setup
OPFRATION
indicating an operating condition .
�
No
warmup is needed for the following checks .
2 .6 .2
Control Adjustment
Set the Model 3000 front panel controls
as follows :
Output Frequency
�
10 MHz
(Lever indi
cator
�
switches to
010 ..000) .
Mode Switch
�
CW
Frequency Switch
�
1 kHz
AM/FM Vernier
�
0 (Down Position)
Vernier
�
Full CW
Attenuator
�
0 dBm
NOTE :
MUST BE HIGH FREQUENCY OSCILLOSCOPE (GREATER THAN 10 MHz)
SCOPE
VERTICAL
2-5
2 .6 .3
RF Output Check
Connect the equipment as shown in Figure
2-4 .
The
10 MHz signal must beat least
0 .9 V p-p (a high frequency oscilloscope
must be used for these checks) .
2 .6 .4
AM Modulation Check (1000 Hz)
Switch the mode switch to AM .
Move the
AM/FM vernier
up to the 50% modulation
point .
Verify that the AM envelope dis-
played on the oscilloscope showsa peak-
to-valley
voltage difference
of about
.45 V and a period
of
1 ms .
�
(See Figure
2 .6 .6
FMxl Check
Switch
the mode switch to FMxl .
�
Move
the AM/FM Vernier up and down .
�
Verify
that the oscilloscope
shows an FM dis-
play (See Figure 2-6) .
2-6
Figure 2-5 .
AM Modulation
Figure 2-6 .
FM Modulation
2 .6 .7
FMx100 Check
Switch
the mode
switch to FMx100
and
repeat the above check .
2 .6 .8
Frequency Vernier Check
Leaving the
mode switch
in
the FMx100
position place the frequency switch
in
the Vernier position .
Verify that moving
the AM/FM Vernier from 0 to
5 kHz shows
an increase in frequency on the oscillo-
scope .
2 .6 .10
Attenuation Check
Switch
the mode switch to CW .
�
Verify
that the output vernier
and attenuator
controls change
the
amplitude of
the
2-5) .
2 .6 .5
AM Modulation Check
(400 Hz)
Move the frequency switch to the 400 Hz
2 .6 .9
Vernier Output Check
Switch the
mode switch to
tion .
Verify
that
moving
the AM posi-
the AM/FM
position .
Verify the AM envelope per-
Vernier from 0 to 50 shows
an increase
iod
is
2 .5 ms .
in output amplitude .
(NOTE :
The unlevel
light
may come
on during
this test .)
for use .
2 .7
OPERATING PROCEDURE
No preparation for operation is required
beyond
completion
of the initial
in-
stallation checks
contained in Section
2 .6 .
To insure that the Model 3000 will
perform as stated
in the specifications,
the instrument should
have a two
hour
warmup before using .
2 .7 .1
Turn On
Verify that
the power transformer pri-
mary is
matched
to the
line
voltage
available and
that the proper fuse
is
installed
(See Section 2 .3
Electrical
Installation .
�
Turn the
front
�
panel
switch "ON" .
�
One or
�
more front
�
panel
accuracy
lights
will
be
illuminated
indicating
an
operating
condition .
NOTE :
�
A flashing
indication
on
the
lights indicates an unlocked condition .
This should cease in
a matter of
sec-
onds .
�
If the flashing does not cease,
refer to the warranty on the back of the
title page .
�
If the unit is
not going
to be used to the extreme limits of its
specifications,
it can be used immedi-
ately,
otherwise a two hour
warmup is
required .
NOTE :
�
When working with active circuits,
transceivers,
etc ., care should be used
to keep voltage or
RF power from being
applied
to the
RF output
�
connector .
Damage may occur to the output attenuator
circuitry of the Model 3000 if this hap-
pens .
2 .7 .2
Frequency Selection
Select the frequency
desired with
the
six
Lever
Indicator
switches
on the
front panel .
A frequency between
1 and
520 MHz
can be
selected with a
1 kHz
resolution .
2,7 .3
Output Level Selection
Set the
output attenuator
and vernier
to the
desired level .
The output
is
continuously
adjustable over a
+13 to
-137 dBm range .
�
The level shown on the
attenuator added to the meter indication
equals the RF output .
�
NOTE :
AM modu-
lation is
possible at
levels above +3
dBm as long as the peak of the modulated
output does not exceed the +13 dBm max-
imum output level .
�
If this level is ex-
ceeded the unlevel light will illuminate
indicating an unleveled condition .
2 .7 .4
AM Modulation - Internal
OPFRATION
Set the mode switch to
AM and the fre-
quency switch
to either 400 or 1000 Hz
modulation rate .
Adjust the AM/FM ver-
nier to indicate the desired
modulation
depth .
2 .7 .5
AM Modulation - External
CAUTION :
Input
voltages greater
than
±10 VDC or
10 VRMS should not be applied
to the external
modulation input
con-
nector or damage may
occur to internal
circuitry of the Model 3000 .
Set the mode switch to AM and
the fre-
quency switch
to external .
Apply a 10
V p-p signal into 600 ohms to the Exter
nal modulation
input connector .
�
This
calibrates the'AM/FM
Vernier
control .
The desired modulation depth can then be
set .
�
The upper frequency limit of
this
input is 20 kHz .
NOTE :
�
When AM modulating, care must be
taken not
to exceed the +13 dBm maximum
level
or excessive
distortion
and an
unlevel condition
can exist .
�
In some
cases,
a high % of AM
modulation
may
cause the unlevel light to come on when
the RF
vernier control
is
at minimum .
This is caused by
the bottoming of the
PIN diode leveler
�
which
in
turn can
cause an increase
in
distortion .
�
If
2-7
10 dB of fixed
attenuation
and
turn the
RF
vernier
control toward
maximum .
The
unlevel
light should then go out .
2 .7 .6
FM Modulation - Internal
Set the mode switch to FMxl
or
FMx100
and the
frequency to 400 or 1000
Hz .
Adjust the AM/FM vernier to the desired
peak deviation .
2 .7 .7
FM Modulation - External
CAUTION :
Input
voltages greater
than
t10 VDC or 10 VRMS should not be applied
to the external
modulation input
con-
nector
or damage .may
occur to internal
circuitry of the Model 3000 .
Set the
mode switch to FMxl
or FMx100
and the
frequency switch to
external .
Apply a 1O V p-p signal into 600 ohms to
the external modulation input connector .
This calibrates the
AM/FM vernier con-
trol .
�
The desired peak deviation can be
set .
�
For FM modulation the upper fre-
quency limit is 25 kHz .
33
29
25
21
17
13
9
5
MOD
T. P
7.3V
PIN
�
CONNECTION
1
�
N .C .
2
�
400
3
�
200
4
�
100
5
�
80
6
�
40
7
�
20
8
�
10
9
�
8
10
�
4
11
�
2
12
�
1
13
�
.8
14
�
.4
15
�
.2
16
�
.1
17
�
.08
18
�
.04
19
�
.02
20
�
.O1
21
�
. oo8
22
�
.004
23
�
.002
24
�
.001
25
�
ground
26 - 31
�
N .C .
32
�
7 .3V
33
�
-
�
35
�
N . C .
36
�
MOD .
T .P .
Figure 2-7 .
Pin Location
& Identification
2-8
2 .7 .8
Vernier Control FM Position
Switch the
mode switch to
the FMxl or
FMx100 position and the frequency switch
to Vernier .
Using
the AM/FM
vernier
output control,
frequency can be varied
in a positive
direction up to
5 kHz in
the xl position
or 500 kHz in the x100
position .
2 .7 .9
Vernier Control - AM Position
Switch the mode switch
to the
AM posi-
tion and the frequency switch to Vernier .
Using
the AM/FM
vernier
control
the
output amplitude can be varied .
It also
enables more
than 20 mW of power to be
obtained
over
portions
of the
band .
2 .7 .10
Programming
Frequency
is programmable via
a rear
panel
input connector
set
by standard
8-4-2-1 BCD contact closures .
A mating
connector
is supplied with
each unit .
See Figure
2-7
for
pin
location and
identification .
These connections are
in parallel with the
front panel Lever
Indicator switches .
�
If the rear panel
programming
is used,
the
front panel
switches
should
indicate
all
zeros .
Rear panel BCD
programming can be
im-
plemented by referring
to Table 2-1 .
100's
10's
1's
.O1's
.001's
TABLE 2-1 .
PROGRAMMING
Switch
TTL
Logic "0"
Open
>2 .2V
Logic "1"
Ground
<0 .4V
3 .2 presents
a block
diagram
analysis
to
enable the reader
to get a
brief overall
view of the operation of
the
instrument .
Sections
3 .3
- 3 .15
contain more
detailed descriptions
of
each subassembly .
For
actual wiring
of the chassis
and
subassemblies,
refer to the schematics
in Section 7 of the manual .
3 .2
OVERALL BLOCK DIAGRAM
The Model 3000 is essentially a voltage
controlled
oscillator to which
phase-
locked
loops and
a crystal
reference
have been added
for the high frequency
resolution .
The discussion will first deal with the
basic signal generator then it will de-
scribe how
the phase-locked loops pro-
vide the additional accuracy .
3 .2 .1
Basic Signal Generator
This discussion briefly describes how the
RF is
generated and how its
frequency
is controlled,
also how the signal
is
amplified, leveled and
amplitude modu-
lated .
Refer to Figure 3-1' for a block diagram
of the basic
signal generator
without
phase locking .
RF GENERATION
The RF output frequency is generated by
two UHF
oscillators and a mixer .
The
outputs of the two oscillators are het
erodyned in the mixer .
�
The difference
SECTION 3
THEORY OF OPERATION
frequency
is amplified and fed
to the
output amplifier .
The
frequencies
of
these
oscillators
are controlled by DC voltages applied
to
their
varactor
diodes .
The
Narrow
Oscillator yields
a single
frequency .
The
Wide Oscillator
can be programmed
over a range from the
frequency of the
Narrow Oscillator
to 520 MHz above the
Narrow frequency .
RF FREQUENCY CONTROL
The RF output frequency
is
determined
by
programming
the
frequency of
the
Wide
Oscillator .
The Wide
Oscilla-
tor
is ultimately
controlled
by
the
front
panel FREQUENCY
switches .
�
The
BCD output
of these
switches is
con-
verted to an
analog voltage which pro-
grams
the oscillator
in 1 MHz
steps .
This analog signal can provide approxi-
mately 3 MHz accuracy .
RF AMPLIFICATION AND LEVELING
The RF
power is amplified by
a multi-
stage,
wide-band amplifier .
The flat
output
is
maintained by a
closed-loop
leveling system around this Output Amp-
lifier .
The Leveler includes a Monitor Diode, an
Error Amplifier
and a Voltage Variable
Attenuator .
The Monitor
detects
the
peak of the output
of the Output
Amp .
This detected level is compared to a DC
reference by the Error Amp .
The output
of the Error Amp
is fed to a PIN diode
(voltage variable)
attenuator,
�
which
changes the
input level to
the Output
Amp until the monitored signal produces
a DC level equal to the reference level .
THEORY OF OPERATION
3-2
o
�
Woa
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tih?
00
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to
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0
0
WQ
W
W
V
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V
LEVEL CONTROL AND AM
The circuitry
for controlling
the
RF
output level is directly related to the
above leveling system
because changing
the
DC level reference changes
the RF
output level .
Of the 150 dB
output range,
130 dB
is
passive attenuation .
The remaining 20
dB is controlled
by changing the level
reference .
�
The VERNIER output control
has a 10 dB range .
�
The remaining 10 dB
is provided by switching the level ref-
erence range .
�
This range switch is pro-
vided so that when AM is not required
the
output amp can provide a carrier at
the
highest possible power .
Since the
RF level can be voltage con-
trolled,
AM can be accomplished by ap-
plying
the
modulating
signal
to
the
VERNIER level control .
This causes the
reference
voltage to
the Error Amp to
/KHz
X7-AL
REF
change at
the frequency of the modulat-
ing signal .
The modulating signal
is
from one of
two internal oscillators or
from an external source .
3 .2 .2
Phase-Locked Loops
The basic signal generator discussed in
Section 3 .2 .1
has a frequency range of
1 to 520 MHz,
has an output
which
is
leveled and adjustable and has the abi-
lity to
be amplitude modulated .
With
the above circuitry,
however,
the
ac-
curacy is only 3 MHz with 1 MHz resolu-
tion .
To achieve the desired
1 kHz re-
solution and .001% accuracy,
the instru-
ment includes four phase-locked
loops .
Phase-locked loops
(PLL)
#1,
#2 and
#4
are used to stabilize the Wide Oscillator
and tune
it
in
1 kHz steps .
See Figure
3-1 .
The Narrow Oscillator is
included
in PLL #3
which provides stabilization
and allows FM operation .
Figure 3-2 .
PLL #1
THEORY OF OPERATION
OUroar
3-3
lIvAVr
AROrfRAM
I
I
OUTPUT
.000 -
/0,000
/0.000 4A/Z
.9,999
9.999
r -
.999
9,00/
9.00/
THEORY OF OPERATION
PLL #1
The purpose of PLL
#1 is to generate
a
CW signal which
changes in
1 kHz steps
from 10 .000 to
9 .001 MHz as
the front
panel frequency
selector
is
switched
from .000 MHz to
.999 MHz .
This signal
will be used as
a reference signal for
PLL #4 .
Figure 3-2 shows a simplified block dia-
gram of PLL #1 .
It consists of a voltage
controlled oscillator capable of frequen-
cies from 9 to
10 MHz,
a phase detector
and a jN counter .
�
A sample of the output
signal from the VCO is fed
to a program-
mable
counter .
The
divisor
of
the
counter is controlled by the three front
panel kHz selector switches .
�
The output
from the
counter
is fed to a phase de-
tector where it
is compared to a
1 kHz
3-4
/NP!/T PROG-
lMHz
XTAL
REF
PLL
#2
Figure 3-3 .
PLL #2
crystal reference
signal .
�
If the two
input signals to the phase detector are
not the same frequency, an error signal
is produced .
�
This error voltage corrects
the
frequency of
the
VCO
�
until
the
phase detector input from the counter
is
exactly
1 kHz .
The purpose of PLL #2 is
to generate a
CW signal which
changes in
1 MHz steps
from
1448 to 1487 MHz
when the
front
panel frequency selector is switched from
000 .
to 039 . MHz .
These CW steps
are
then repeated
every 40 MHz
throughout
the entire 0
to 520 MHz range .
Use of
this signal to control the
Wide Oscil-
lator will be discussed in the descrip-
tion of PLL #4 .
MIXER
�
OUTPUT
OUTPUT
�
FREQ,
MHz
�
iYlNz
000.
- 8
/448
00/.
9 _
- 9
/449
r
-s-
s
___Sr-
039.
47
- 47
1487
040
9
B
/448
04/
9
9
/449
3-3 shows a simplified block dia-
gram of PLL #2 .
PLL
#2 operates
in
the same manner
as PLL #1 with one ex
ception .
�
The circuit includes a mixer
and band-pass amplifier .
�
The purpose of
this
additional circuit
is
to offset
the
1448
to
1487 MHz
output
from
the
VCO to
8 to 47 MHz .
�
This
offset
is
necessary in order to make
the frequency
compatible with the programmable counter
and phase detector circuits .
The other
circuits
in
this loop operate the same
as those in PLL #1 .
�
In
this
case the
programmable
counter is controlled
by
the three "MHz"
selector
switches
and
the loop reference
frequency is
1 MHz .
PLL #4
The purpose of PLL #4
is
to adjust the
Wide Oscillator in 1 kHz steps from
1198
MHz to
1718 MHz as the front panel fre-
quency selector
is adjusted
from 0
to
520.000 .
The Wide Oscillator frequency is offset
by Mixers #1 and #2 and compared to the
reference
(from PLL #1)
by the
phase
detector .
A difference in phase or fre-
quency causes
an error signal to
tune
the
Wide Oscillator
until both
phase
detector
inputs
are
identical .
How
this loop
locks on a particular
�
fre-
quency can best
be explained in
three
steps :
�
1) phase locking
at 40 MHz in-
tervals across the band,
2) phase lock-
ing at I MHz intervals,
3)
phase locking
at
1 kHz intervals .
�
Figure 3-4 is
a
simplified
block
diagram of
PLL
#4 .
To understand locking at
40 MHz
inter-
vals, assume temporarily
that the ref-
erence frequencies
from PLL #1 and PLL
#2 are fixed
(10 MHz and 1448
MHz re-
spectively) .
Figure 3-5 shows the fre-
quencies
throughout
the loop
for
this
discussion .
This step of
the PLL
#4
explanation can be described more clearly
by considering the entire Wide Oscillator
range rather than discussing single fre
quencies .
�
The Wide Oscillator
covers
the range
of
1198 to
1718
MHz as
the
Output frequency
changes from 0 to 520
MHz .
�
(Figure 3-5, lines A and C .)
THEORY OF OPERATION
When the Wide Oscillator range is heter-
odyned
in
Mixer #1
with
1448 MHz
the
difference frequency
which is produced
ranges from 250 to 0 to 270 MHz .
�
(Fig
ure
3-5,
line E .)
�
This
signal
�
is
then mixed with a 40 MHz comb
(all har-
monics
of
40 MHz) in Mixer #2 .
�
(Figure
3-5,
line F .)
�
Taking the difference be-
tween line E and F yields the repetitive
frequency
range from 0 to
20 to 0
MHz
as
shown in
line G .
�
This
signal is
fed to the phase detector .
The reference to the
phase detector is
10 MHz but
the loop will
not
lock on
every 10 MHz output
of Mixer #2
shown
on line G .
Only the 10 MHz signals to
the immediate right of the 20 MHz signals
on
the graph
are the
proper phase to
produce lock .
�
Therefore
at
�
every
40 MHz interval of the output frequency
an input
to the
phase detector
would
allow the loop
to lock .
�
Section
3 .2 .1
explains
that
an analog signal
drives
the Wide Oscillator to within three MHz
of
the proper frequency .
�
Therefore,
although
there
are 14 possible
�
lock
points on line G, the only one selected
will correspond
to
the
�
analog-tuned
frequency of the Wide Oscillator .
�
The
unit as
described so far is capable of
phase
locked output at
0,
40,
80 .
.
.
520 MHz .
�
The following is an explana-
tion of locking at
1 MHz intervals .
To allow
phase locking at
1 MHz inter-
vals, the reference frequency
to Mixer
#1
is made
adjustable in 1 MHz
steps
over a 40
MHz
range
(1448-1487 MHz) .
If, for example, this reference frequency
to
mixer #1
were
1449 MHz,
the input
range to the
phase detector would look
the same except
the entire range would
be shifted
1 MHz to the
right .
Lock
points would then be possible at output
frequencies of
1,
41,
81 MHz, etc .
Being able
to
change this reference in
1 MHz
steps allows phase
locking from
0 to 520 MHz in
1 MHz steps .
3-5
THEORY OF OPERATION
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OUTPUT FROM
4-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Lo
10 L
10
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IO
l0
/O
lO
lO
lO
1O
l0
/O
l0
/O L
/O
10
10
AO
10
/O
lO
la
lO
da
20
2a
20
20
20
20
20
10
10
20
2J
1(T
?Zr
Figure
3-5 .
PILL
#4 Frequencies
TO
O~JTP!/T
MIXED
1448 TO
/487 /W /WWlz STEP5
INPUT FRgM
PL L
LINE 4 t
LINES)
RESUL TS
�
2,-
A CONSTANT
l4ld
~PE~E~lNCE
To provide phase locking in 1 kHz steps,
the PLL #4
phase detector's
reference
from PLL #1 is adjustable in
1 kHz steps
(10 .000 to
9 .001 MHz) .
This causes the
Wide Oscillator
frequency to change in
1 kHz steps
in order to keep
the loop
locked .
PLL #3
The purpose of PLL #3 is to stabilize the
Narrow Oscillator at a frequency of
1198
MHz .
Figure 3-6 showsa simplified block dia-
gram of PLL
#3 .
This loop operates in
the same
manner as PLL
#1
and PLL
#2
except that it does not require the use
of a
programmable
counter .
�
The 1198
MHz
output from
the Narrow Oscillator
is combined in a
mixer with a 1200 MHz
crystal controlled
signal .
�
This pro-
duces a
2 MHz difference signal .
�
This
signal is fed
to a phase detector where
it is
compared to a 2 MHz crystal ref-
erence .
�
Any difference in the input sig-
nals
will produce
an
error
�
voltage
which is applied to the Narrow Oscilla-
tor (VCO) to correct the frequency error .
To provide
FM
modulation,
the
2 MHz
crystal reference applied to the phase-
detector in PLL #3 is replaced with the
output of a VCO as shown in Figure 3-7 .
Ea'T.
Moo
/,PI/r
Figure
3-7 .
FM Circuit
CRYSTAL REFERENCE
?MHz
Xr
.4[
lNOlIT
THFORY OF OPFRATION
With a O volt
(0 deviation)
input to the
VCO
of Figure 3-7,
the output
is
2 MHz,
therefore
the operation of the generator
is unchanged except the frequency accu-
racy is reduced because the reference is
not now
crystal controlled .
A modula-
ting signal of +5 V
to -5 V will cause
the VCO frequency
to shift 0 .5 MHz above
and below the
2 MHz signal .
Since
the
instrument's RF output signal is
phase
locked to this reference the
output of
the generator will be FM modulated with
a maximum deviation of
.5 MHz .
All
the reference frequencies
for the
phase-locked
loops are derived from
a
single 40 MHz crystal source by means of
appropriate multiplication or division .
Figure 3-6 .
PLL #3
/ZOO .Wz
XTAL
INOUT
TO AEwERrm E /NPUT
PL /
Atx
TO
OUTPUT
MIXER
THEORY OF OPERATION
3 .2 .3
Subassembly Descriptions
The overall
block diagram discussed in
this section describes basically how the
instrument
functions as
a unit .
The
unit is made up of ten module assemblies
and three
printed circuit
card assem-
blies .
These can be identified in Fig
ure 5-6 .
�
Sections
3 .3
thru 3 .15 de-
scribe the operation of each
subassem-
bly .
�
The name of the subassembly_
de-
scribes,
to an extent, the primary func-
tion it performs .
3 .3
C315
- METER BOARD
The primary function
of this
assembly
is
to provide
the program
voltage to
the leveler circuit for the RF amplifier .
It also includes
the RF
output
level
3 .3 .1
Level Program
Figure 3-8 .
C315
- Meter Board
meter which appears through the instru-
ment front panel .
See Figure 3-8 .
During CW
operation of the instrument,
the level program
is controlled by the
VERNIER on the front panel .
The output
of this control goes to two range cali-
bration circuits,
"High" and "Low" .
The
range calibration circuits
convert the
voltage from the
VERNIER to a
voltage
level appropriate
to drive
the leveler
circuit in the M10W .
The
"Low" circuit provides the program
for all
ranges
of the
detented power
output dial
except +10 dBm .
At "+10"
the level
program
is taken
from
the
"High" circuit .
�
The "High" level program
enables the full gain capabilities of the
M10W to be
used when the output is not
amplitude modulated .
LEVEL
PF'Oc'�5=f%trl
TG
/N/UW
3 .3 .2
Modulation
The modulating signal from assembly C316
is applied to the VERNIER which ultimately
causes
the RF
level to
change .
The
leveler in the M10W
does not cause the
RF level to respond linearly to changes
in the level program voltage .
�
To com-
pensate for this,
a stage is
included
to shape the modulation signal before it
is applied to the VERNIER .
3 .3 .3
Meter
The output level meter
(front panel) is
controlled by the level program from the
VERNIER .
The meter and its driver cir-
cuit are designed
to
display a reading
which corresponds to the actual RF level
from the M1OW .
3 .3 .4
"Unleveled" Light
A
light emitting
diode is
mounted on
this assembly and
appears on the front
panel of the instrument .
�
Refer to the
MOGUL AT/ON
/NPUT
M10W description
for an explanation of
the circuit driving this light .
3 .4
C316
- MODULATION BOARD
This
assembly provides the
modulating
signals
used in the
AM and FM
modes .
The front panel ACCURACY lights and as-
sociated circuitry are also on this as-
sembly .
See Figure 3-9 .
3 .4 .1
Modulating Signals
The AM or FM modes are achieved by simply
routing essentially
the same signal
to
the
appropriate circuitry by means
of
the front panel MODE switch .
The front
panel MODULATION FREQ switch
selects one of four sources of modulating
frequency, one external and three inter-
nal .
The internal signal can be selected
from one of two CW oscillators or a man-
ually variable DC control .
FROM
PHASE LOCKEO
L OOiL5
Figure 3-9 .
C316 Modulation Board
THFORY OF OPFRATION
THEORY OF OPERATION
The two internal oscillators are ampli-
fied/leveled
by the
same circuit
for
simplicity but separately
energized by
the FREQ switch .
The oscillators
are
twin T oscillators, one is at 400 Hz the
other is at
1 kHz .
3 .4 .2
Accuracy Lights
Which LEDs are lit is determined by the
MODE switch .
If any of the phase locked
loops unlock,
the energized
LEDs
are
made to
flash by an IC
timer which is
activated by a DC level from any of the
four phase locked
loops in the instru-
ment .
3 .5
DPS2A - POWER SUPPLY
The
DPS2
�
provides DC power for the rest
of the instrument .
See Figure 3-10 .
3 .5 .1
Transformer & Filters
The transformer steps down the line vol-
tage to appropriate levels for the three
circuits .
Full
wave
rectifiers and
filter capacitors convert
this voltage
to DC .
3-10
AC
L lNE
3 .5 .2
+18 V SUPPLY
The +18 V
circuit
has
a temperature-
compensated precision voltage reference .
This reference iscompared to the output
voltage
by
an
error amplifier
which
corrects any error in the output voltage .
3 .5 .3
-18 V SUPPLY
The -18 V circuit compares the +.18 V and
-18 V outputs and holds
the difference
in their magnitudes to zero .
3 .5 .4
+7 .3 V SUPPLY
The +7 .3 V circuit uses. a three-terminal
adjustable voltage regulator IC to pro-
vide a
pre-regulated
i-7 .3 V
output .
This
voltage
supplies
other
voltage
regulators throughout the instrument .
Figure 3-10 .
�
DPS2
- Power Supply .
4 /8 vocrs
- lB voc rs
-f- 7. 3 vocrs
Section 3 .6 is deleted .
3 .7
M9W - SWEEP OSCILLATOR
The M9W is the origin of the instrument's
RF output frequency.
This frequency is
generated
by heterodyning the
signals
from two higher
frequency voltage con-
trolled oscillators .
�
See Figure 3-12 .
3 .7 .1
Mixer
The narrow oscillator
applies a signal
of 1198 MHz to the mixer (except in the
FM mode) .
The wide oscillator provides
between 1199 and 1718 MHz .
The differ
ence
�
(1-520 MHz)
�
is applied to a wide
band pre-amp and then sent to the M10W .
3 .7 .2
Wide Oscillator
The wide range of oscillation is achieved
by applying
to varactor diodes
in the
tank circuit an analog
signal which is
dependent upon the
setting of the fre-
quency switches on the instrument's front
panel .
An additional signal is applied
to this VCO from the
phase detector in
the M34 .
This is the fine tuning signal
which locks the wide
oscillator on the
proper frequency .
3 .7 .3
Narrow Oscillator
This
oscillator also uses a
varactor
diode so that the frequency can be vol-
tage controlled
for phase locking
and
for FM operation.
The
coarse modulating
signal
(FM)
is
applied to the varactor from the modula-
tion board
(C316) .
The frequency
of
this oscillator is accurately controlled
by a "fine tuning" bias voltage from the
M33 phase detector .
�
The deviation can
be controlled up to 500 kHz .
3 .7 .4
Levelers
THEORY OF OPERATION
This module
contains three RF leveling
circuits as shown in the diagram .
These
maintain a
constant amplitude
RF over
the frequency range and with temperature
variation .
The output of a peak detec-
tor
is compared to a constant DC level .
Any error is amplified and applied
to a
PIN diode attenuator in series with the
RF signal .
3-11
THEORY OF OPERATION
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WIDE
OSCILLATOR
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OSCIG L ATOR
Figure 3-12 .
M9W
The main function of the M10W module is
to amplify
the RF signal from the
M9W
to a level programmable
between -7 and
+13 dBm .
A leveler circuit maintains a
constant
amplitude output signal
over
the wide frequency range .
The
Unleveled
light
driver
causes the
front
panel
light to glow when
the leveler circuit
exceeds
its
proper
operating
range .
L £ 1/E[ ERS
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t Er~'t F~
3 .8
M10W-6 - OUTPUT AMPLIFIER
�
3 .8 .2
Sweep Oscillator
Leveler
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The leveler uses a peak detector,
dif-
ferential amplifier
and
a
PIN
diode
attenuator .
�
The peak
detector is fed
from the RF output .
�
The resulting level
is compared to a DC
(or AM) reference by
the differential amp which supplies the
control current
to the PIN diode atten-
uator .
�
If the detector RF
output de-
viates
from the
reference level,
the
See Figure 3-13 .
3 .8 .1
Amplifier
signal to the PIN diode causes the
to be decreased
or increased .
In addition to providing a flat
input
frequency
This section is a four-transistor
wide
response,
the leveler allows for elec-
band
amplifier which
can increase the
tronic control of the
RF output ampli-
RF by about 23 dB .
tude by varying the DC reference .
The
reference
comes from
the meter
board
(C315) .
L /LINT ON
MJETENP B0.4k'D
3 .8 .3
"Unleveled" Light Driver
3 .9
M172 - SWEEP DRIVE/DAC
WlOE
BANp
AMPG lFlEQ
401r1-EREN7-1A1
AMP
When the differential amp in the leveler
circuit is putting out
a voltage which
would cause the PIN diode attenuator to
be at its high or low resistance limit,
the leveling circuit
can no longer
be
effective .
The above voltage
levels,
which are applied
to the unlevel light
driver, are adequate
to turn on a source
of current for the
indicator which ap-
pears through the front panel .
This module provides two output voltages .
One is linear
from 0 V to -5 V
as the
frequency
goes from
0 to 39
MHz, re-
peating every 40 MHz ;
the other varies
from +7 V to -8 V as the frequency goes
from 0 to 520
MHz .
The second voltage
is
shaped
to linearize
the VCO in the
M9W Sweep Oscillator .
s
(''EFERENCE)
LEVEL
CONTROL
F.QOM /LIFTER BGARO
Figure 3-13 .
M10W - Output Amplifier
THEORY OF OPERATION
lwCi/Vl TO.Q
OIOGE
-~ O4/~rPUT
MO AASSIYE
STEP ArrrArkA1TOR)
Two
digital-to-analog
converter
ICs,
programmed
by the
front-panel
Lever/
Indicator switches, provide the 0 to 520
MHz voltage .
This is shaped in the next
section of the module . A third DAC pro-
vides the repeating 0 - 40 MHz voltage .
Since the state of the 20's line depends
on the 100's line,
the 20's line is in-
verted when the 100's line is high .
The analog tuning signal
from the M172
is "shaped" before driving the M9W wide
oscillator .
The shaper is an inverting
DC amplifier
which amplifies
the input
by a smaller factor
for smaller magni=
tude inputs . Shaping this analog voltage
compensates
for the
non-linear change
in
capacitance of the
varactor diodes
in the oscillator circuit .
3-13
THEORY OF OPERATION
-A A2
WW~
Z= Q
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az ~CC
O
2
4
8
10
20
40
80
100
200
400
800
3 .10
M29-1
- FM REFERENCE
Figure
3-14 .
M172 Sweep Drive/DAC
TO MHz
STEPS
TO WIDE
VCO
The M29-1 is a voltage
to frequency con-
verter,
the output of which
is used as
a phase lock reference
in the M33 .
The
module includes a voltage variable cur
rent source which feeds
(determines the
�
3 .10 .1
Current Sources
frequency of)
a square wave oscillator .
(See Figure 3-15 .)
�
Zero volts in yields
�
This
�
circuit provides
�
both a positive
2 MHz out .
�
and a negative source of current .
�
The
so that the instantan-
eous currents in both sources are equal .
3 .10 .2
Oscillator
The change in output current
is directly
proportional to the change in input vol-
tage to the circuit .
The input voltage
may vary
between -5 and +5 volts .
The
circuit
is
designed for a very
linear
current-out vs . voltage-in curve .
The square
wave output is produced
by
the combination
of an integrator and a
hysteresis switch .
The integrator con-
verts a square wave to a triangle wave .
The triangle wave causes the hysteresis
switch to produce the square wave which
is fed back to the integrator .
The integrator is
made up of a current
switch
and
a
capacitor .
The
square
wave applied to the current switch causes
a square
current signal
to be
applied
to the capacitor .
Positive
constant current produces
an
increasing voltage ramp on the capacitor
and negative
constant current produces
Figure 3-15
.
M29-1
- FM Reference
THEORY OF OPERATION
l. S- 2 . SMf/z
a decreasing voltage ramp .
�
For a square
wave input,
therefore,
the output
is
a
triangle wave .
Changing the magnitude of the "currents",
by
changing the
input voltage
to the
module,
changes the rate at
which the
capacitor charges and discharges to the
hysteresis points thus the frequency of
oscillation changes .
3 .11
M30
-
CRYSTAL REFERENCE
This module supplies reference frequen-
cies at 1 kHz,
1 MHz,
2 MHz, 40 MHz
and
its harmonics,
1200 MHz
(from 120 comb)
and
1440 MHz
to the phase locked loops
in the instrument .
�
These signals
are
produced by a 40 MHz crystal oscillator
and a series
of dividers and multipliers .
See Figure 3-16 .
3 .11 .1
40 MHz Oscillator
This crystal oscillator is the heart of
the accuracy of the frequency determining
circuits in the instrument .
It is tem-
perature
compensated
for
frequency
stability .
A leveler circuit causes the
oscillator output level
to be the same
in all M30 modules .
3-15
THEORY OF OPERATION
3 .11 .2
DIVIDERS
The frequencies below 40 MHz
are
pro-
duced by a series of
TTL counters .
A
"divide by 4"
produces the
10 MHz out
put for the
�
phase- locked
�
loop in the
optional high stability reference . This
frequency is
further divided
as shown
in Figure
3-16 to provide the
1 MHz,
2
kHz and
1 kHz outputs .
3 .11 .3
MULTIPLIERS
The 40 MHz CW is fed to a harmonic gen-
erator which produces the "comb" output .
From the 40 MHz comb,
120 MHz is selected
and applied to another harmonic genera-
tor .
A sample of the 120 MHz comb output
is also fed to a
filter which provides
the 1440 MHz output .
3 .12
M31A
- kHz STEPS
The input
to this module
is the BCD data
from the front-panel "kHz" switches
(to
3-16
21WHz
Figure 3-16 .
/MHz
M30
- Crystal
Reference
3 .12 .1
VCO
/ A042
40 Milt
COME
3 .12 .2
PHASE LOCKED LOOP
120 MWs
�
?p0 M.fis~
COMA
/440 MVL
the right
of the decimal point) .
�
The
output
frequency is
(10 MHz - Sk kHz),
where Sk is the number indicated by the
kHz switches .
�
If the FREQUENCY is set
to 333 .333
MHz,
for example,
the M31A
output is
9 .667 MHz .
The block diagram
of the M31 is shown in Figure 3-17 .
The output frequency
is generated by a
Voltage
Controlled Oscillator which is
tuneable from 9 .001 to 10 .000 MHz .
Including the VCO in a phase-locked loop
permits accurate programmability .
The
VCO tuning voltage comes from the Phase/
Frequency
Detector
circuit .
A 1
kHz
signal from
the Crystal
Reference
is
applied to one input of the phase detector
(IC9) .
�
A sample of the VCO
input
is
divided by the Programmable Divider, . and
the result is applied to the other input
of the phase detector
.
�
Any difference in
produces an error
voltage at the phase
detector
output,
which
controls
the
VCO .
The system
is
stable
only when
the phase and
frequency error is zero,
so that the
output frequency is
phase
locked to the
1 kHz reference signal .
3 .12 .3
PROGRAMMABLE DIVIDER
In order for the M31A to perform
prop-
erly,
the divider is designed to divide
the VCOfrequency by (10,000-Sk) where
Sk
is the number set on the "kHz" switches .
The divider counts the number of cycles
at its input and puts
out
a pulse when
the count reaches 10,000 .
The starting
count is the number shown on the
"kHz"
switches .
For example,
if the instrument
is set for 222 .500 MHz, this circuit would
divide
by
9,500
(count
from
500
to
10,000) .
Therefore,
the variable input
to the
phase detector would be correct
(1 kHz)
only if the VCO output were 9 0 500
MHz .
1 KHZ
REF
S K = SETTING
OF 'KHZ ° SWITCHES
Figure 3-17,
M31A
- kHz Steps
3 .12 .4
UNLOCK INDICATOR
THEORY OF OPERATION
When the phase-locked loop is unlocked,
the LED on top of the module will light
and
the front-panel ACCURACY lights will
flash .
A window detector
monitors the voltage
level which is being fed from the phase
detector to the
VCO .
If the
voltage
exceeds the
normal
operating
range,
power is applied to the module light and
the flasher circuit
on the
Modulation
Board .
3-17
THEORY OF OPERATION
3 .13
M32A - MHz STEPS
The M32A provides, for the M34, a refer-
ence frequency which corresponds to the
setting
on the
"MHz"
switches .
(See
block diagram,
Figure 3-18 .)
The M32A
output range is 1448 to 1487 MHz, which
repeats itself with every 40 MHz change
of the frequency switches .
Any specific
M32A output relates to the "MHz" switch
setting
(S.)
by the equation (Output
=
(1448 + R) MHz), where R is the Remain
der of dividing
S
�
by 40 .
�
If the front-
panel is set,
formexample, for 333 .000,
R would be 13
�
(333 .000 + 40 = 8 with a
Remainder
of 13) .
�
The output of
the
M32A would then be 1448 + 13 = 1461 MHz .
3 .13 .1
VCO
The output of the M32A is produced by a
Voltage
Controlled Oscillator .
This
VCO is coarsely
tuned by the repeating
analog output of the 2122 .
�
Pine
tuning
is the result of including the VCO in a
phase-locked loop .
�
In addition to the
VCO,
the phase-locked
loop includes
a
phase detector and Programmable Divider .
3 .13 .2
PROGRAMMABLE DIVIDER
A sample of the VCO output is mixed with
the 1440 MHz
signal from
the
crystal
Reference
producing
a difference fre-
quency of from 8 to 47 MHz, which is then
shaped into TTL pulses and applied to the
Programmable Divider .
The Divider counts the falling edges of
the
8-47
MHz
input pulses, resetting
each time a
count of
47
is
reached .
The reset pulse is applied to one input
of the phase detector .
By
controlling
the starting
count of the Programmable
Divider,
the effective
divisor
can be
controlled .
The starting count of
the Programmable
Divider
is selected
by
a
Read
Only
Memory, which is programmed to
provide
the correct
"R"
information
for each
"S,:h" setting .
This "R" is then applied
3-18
to
the
Programmable
Divider
as
the
starting count .
Thus,
as
the starting
count
varies
from
0
to
39,
the
effective divisor varies from 47 to 8 .
When the VCO is running
at the correct
frequency,
the
Programmable
Divider
reset pulse rate will be
1 MHz .
3 .13 .3
PHASE DETECTOR
One
input to the phase detector is the
reset
pulse
from
the
Programmable
Divider .
The
other
input is a
1 MHz
fixed reference signal from the Crystal
Reference .
The
phase detector
output
is
a
voltage
determined
by
the
difference
in
phase
at
the
phase
detector inputs, and is used to correct
any
error
in
the
VCO
frequency
or
phase .
If
the
VCO output
frequency
is
too
high,
for
example,
the phase detector
output
becomes
more
negative,
thus
increasing
the
VCO
varactor
diode
tuning capacitance and lowering the VCO
frequency .
If the VCO frequency is too
low,
the reverse occurs .
Thus,
.the loop
will tend to
maintain
zero
phase
or
frequency
error .
A voltage-controlled
attenuator
between
the
phase detector
circuit and the VCO keeps the open-loop
gain of the phase-locked loop relatively
constant
over the programmed frequency
range,
allowing
the loop noise
to be
minimized .
3 .13 .4
UNLOCKED INDICATOR
When the phase-locked loop is unlocked,
the LED on top of the module will light
and the front-panel ACCURACY lights will
flash .
A window detector monitors the
voltage
level which is being fed from the phase
detector to the VCO .
If
the
iroltage
exceeds the
normal
operating
range,
power is applied to the module light and
the flasher circuit
�
am
�
the
�
Modulation
Board .
~/20 COMB M30)
VCO
BAS9W)
/. X- 2 . .T
M//: FlrOM
16429
2 MNz
,-?OM M30
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0
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REPEATING
ANALOG
TUNING
Figure 3-18 .
M32A - MHz Steps
LEvZLER
u
MlXEI?
A'EFEFrENCE
SW/ rcm
VAA71ABL E
/POUF
A'EFE,PFNCE
IMR4Vr
Figure 3-19 .
�
M33
- Narrow Oscillator Lock
THEORY OF OPERATION
r11- TCR
1448-1487 MHZ
(1448+R
TO NARROW
OSC1LLATOR
/N M9W
3-19
THEORY OF OPERATION
3 .14
M33
- NARROW OSCILLATOR LOCK
The M33
is part of a phase locked loop
for which the VCO is the "Narrow Oscil-
lator" in the M9W .
The M33 includes a
phase detector, mixer and an electronic
"reference" switch .
See Figure 3-19 .
3 .14 .1
Phase Detector
This circuit compares the reference fre-
quency to the
variable frequency which
represents the VCO output .
IF the VCO
is too high,
for example,
the phase de-
tector puts out
a more positive voltage
which is filtered
and
inverted by
an
integrator and applied to the VCO
(nar-
row oscillator)
to lower the frequency .
3 .14 .2
Mixer
The phase detector
can not operate
at
UHF frequencies so the VCO is mixed with
1200 MHz CW .
This provides an
offset
frequency which
is the variable
input
to the
phase detector .
�
The deviation
of
this
variable signal from 2 MHz
is
precisely the
same as the deviation of
the VCO from 1198 MHz .
nw9 w
W/DL VCD
3-20
3 .14 .3
Reference Switch
3 .15
M34
- WIDE OSCILLATOR LOCK
Figure 3-20 .
M34
- Wide Oscillator Lock
This circuit,
controlled
by the
MODE
switch
on the instrument front
panel,
selects either
the 2 MHz CW
reference
for CW operation or the FM
reference
(1 .5-2 .5 MHz)
for FM operation
of the
instrument .
�
The reference switch uses a
hex
inverter
to electronically
route
the
�
reference
signals
as well as to
guarantee
that TTL levels will be
fed
to the phase detector .
This module provides the fine tuning pro-
gram for the wide oscillator in the M9W .
Figure 3-20tis the block diagram of the
M34 .
The letters A thru F
relate the
signals at the associated points in the
module to the graphs A thru F in Figures
3-18 and 3-19 .
The M34 phase locks the
VCO to
1198 MHz plus the frequency indi-
cated on all
six front panel switches .
F. P.
!/n1LOG'K
FLASHER
iY19W
WIDE
OSC/G L 4raR
TO iH9W
3 .15 .1
Phase Detector
?Oo
/70
/Zo
The
frequency offset circuit
converts
the frequency of the VCO to a lower fre-
quency which retains the frequency error
information for use by the phase detec-
tor .
In addition to the frequency off-
set circuit and the phase detector,
sev-
eral
auxillary circuits are
included .
The phase detector compares the"offset"
VCO frequency to the reference
�
frequency
from the M31 .
�
(Refer to the description
of the M31 for
a more detailed descrip-
tion of this
10 .000 -
9 .001 MHz
refer-
ence .)
The phase
detector output voltage goes
positive or negative to ultimately drive
the wide oscillator higher
or lower in
SO
/o
0
40
70
g12
Figure 3-21
.
M34
- Signal
Frequencies
THFnRY OF OPERATION
1212
BO
110
/60
;
140
190
BZO
3(0
/00
200
300
OUTPUT
F-R10Ue/VC), MNz
/so
.200
-~t~{-.~-_-ma y
440
4,510
1
.00
400
500
3 .15 .2
Frequency Offset Circuit
280
The VCO error
information must be con-
verted
to a frequency useable
by
the
phase detector .
This conversion is made
by mixer #1, a 270 MHz low pass filter,
mixer #2
and a 10 MHz low pass filter .
Refer to
Figures 3-20,
3-21
and
3-22
for descriptions
of signals .
Mixer 41
heterodynes the VCO frequency
with
the
"MHz steps"
reference
fre-
quency
(1448 + R) MHz .
�
The difference
frequency,
�
11448 + R - VCOJ,
is below
270 MHz .
�
This signal is sent to mixer
42 where it is heterodyned
with the 40
MHz comb .
�
For
any
output
frequency
graph
D
in
Figure
3-21
shows
only
the
comb
frequency
which
will yield
the
desired
output
( below
20
?liz)
3-21
frequency until both inputs to the phase
of
m;xPr
# 2 .
Tf
the loop is locked,
detector are
the same frequency .
The
mixer
,#
2
will
produce
a
10
MHz
integrator serves as a
low pass filter
difference
as
Ghown
in
Figure 3-21
for the phase detector .
(assuming the "kHz" switches are set for
THEORY OF OPERATION
0
0
0-
MHz
The filter after the mixer #2 blocks all
the outputs of the mixer except the lower
frequency signal containing the VCO error
it
sends a voltage to the flasher cir-
cuit .
R 9.9
100. 000
�
/00.005-
04'r,-417- E.PEQUENG'Y-MNZ
�
The leveler circuit maintains a constant
input
amplitude
to the
phase detector
by
controlling the
amplitude
of
the
Figure 3-22 .
�
M34
- Frequencies
�
input from
M9W wide
oscillator .
�
The
(Expanded)
�
input to
the phase detector
(about
10
MHz)
is
peak detected and
compared to
000) .
Figure 3-22 shows signals A thru
�
a DC
reference in the leveler circuit .
F for
�
a case when the kHz switches are
�
The leveler circuit controls a PIN diode
not 000 .
�
attenuator which is between the VCO in-
put and mixer #1 .
1019.000
OUTPUT FREQUENCY - MHz
/OQ 003
MNz
information .
When the unit is unlocked
the
filter passes up to 20 MHz
(to be
able to
capture over the 20
MHz range
allowed for
analog tuning) .
Once the
/298.000-
loop is locked
the filter decreases to
10 MHz to further eliminate phase locked
68 NINZ
loop related spurious signals .
170.000
3 .15 .3
Auxillary Circuits
MNz
I
The "speed-up circuit" is activated when
/6 9. 99.T
the phase locked loop becomes unlocked .
160 MNz
L
The
output of this circuit is sent
to
the M9W
to cause
the VCO to be
tuned
/0
faster by the analog voltage .
MHz
-
The "unlock" amp monitors both the tuning
9 995-
voltage from the phase detector and the
leveler voltage
to detect an
unlocked
10
-I
condition of the M34 .
When unlock occurs,
The purpose of the performance tests
�
in
the following
paragraphs is
to verify
that the Model
3000 Signal
�
Generator
meets its published specifications
(par-
agraph
1 .2) .
�
Individual
performance
tests consist
of :
the specification to
be verified,
the method of
testing,
a
list of equipment required and a detailed
test procedure including in
some cases
a simplified setup drawing .
Critical
specifications for
each item
of test
equipment are listed
in Table
4-1 of Recommended Test Equipment .
Ex-
cept as detailed settings of test equip-
ment apply to performance test procedures,
all other test
equipment operating de-
tails are omitted .
The Signal
Generator
should have
its
top and bottom covers installed for the
performance
tests .
All of
the
tests
TABLE 4-1 .
RECOMMENDED TEST EQUIPMENT
FOR MODEL 3000 PERFORMANCE TESTS
SECTION 4
PERFORMANCE TESTS
can be performed
without access to the
internal
controls .
Before
applying
power to the Signal Generator see
Sec-
tion 2 for details of electrical instal-
lation .
The
line
voltage
should be
maintained at 115 or 230 volts ±10%, 50
or 60 Hz
throughout
the
tests .
�
The
performance test procedures
are
begun
after a two-hour
minimum warmup of the
Signal Generator
in a
+20 to
+300
C
ambient temperature range .
A copy of the
Performance Test
record
(PTR)
is provided
at the end
of this
section
for convenience
in
recording
the performance of the Model 3000 during
performance
tests .
It can be
filled
out and
used as a permanent record for
incoming
inspection or it can be
used
as a guide for routine performance test
ing .
�
The PTR lists the paragraph, test,
basic control settings and limits .
All
of the tests refer to this test record .
INSTRUMENT
Digital Multimeter
�
10 VDC :
Distortion Analyzer
�
Range :
CRITICAL REQUIREMENT
Frequency Counter
�
Range :
to 525 MHz
Function Generator
�
Level :
10 Vp-p
600 ohm load
Range :
>0 .2 Hz
Distortion : <1%
t(0 .07IR+0 .02%FS)
5 Hz to >25 kHz
RECOMMENDED
Keithley 179
HP334A
HP5300B/5303B
sine wave into
�
Wavetek 130
to >25 kHz
10 to >520 MHz
�
HP435A/8481A
Input Level :
-7 to +13 dBm
Accuracy :
t1I FS
Modulation Meter
�
Range :
�
5 to >520 MHz
�
AFM2 Radiometer
Residual FM :
<100 Hz
(rms)
(quiet room)
Residual AM :
<0 .1%
(rms)
(in CW)
AM Accuracy :
�
±(2%R+1IFS)
Oscilloscope
�
Range :
DC to 2 MHz
�
Tektronix D10/
Sensitivity :
2 V/cm (AC coupled)
�
5A18N/5B10N
Spectrum Analyzer
�
Range :
�
500 kHz to 1200 MHz
�
HP8554L/8552B/
Display :
2 dB log and
10 dB log
�
141T
4 .2
FREQUENCY RANGE AND RESOLUTION TEST
SPECIFICATION
4-2
Range
�
1 MHz to 520 MHz selectable in 1 kHz steps .
Resolution
�
1 kHz
TABLE 4-1 .
(Cont'd)
METHOD
�
A frequency counter is used
to measure the frequency range
and the frequency resolution .
All frequencies in CW and AM
modes between 1 and 520 MHz are selected by front-panel lever/
indicator switches .
�
Each of the digits of the frequency se-
lector
�
(a total of 56) will be tested .
�
The 0 through 9 kHz
digits provide
1 kHz resolution .
Precision Attenuator
Pads
10,
20,
30 and 40 dB
Weinschel 50-10,
50-20,
50-30,
and 50-40
Wideband Amplifier
Range;
1 to 520 MHz
HP8447D
Gain :
26 dB
Impedance :
50 ohm
Sweep/Signal Generator
Range :
1 to 520 MHz
Wavetek 2001
VSWR Bridge
5 to 525 MHz,
50 ohm
Wiltron 60N50
50 dB directivity
Coaxial Short
Type N female
HP11511A
50 ohm Load
BNC
HP11593A
Loop Probe
See Figure 4-9 .
Set the Signal Generator controls
as follows :
4 .3
FREQUENCY ACCURACY TEST
SPECIFICATION
PERFORMANCE TESTS
FREQUENCY selector
�
050 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive in CW MODE)
MODULATION FM/AM
�
(Inactive in CW MODE)
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
2 .
Connect the Signal Generator RF out connector
to the
50
ohm inputof the frequency counter .
Set the counter
to read
frequency to seven digits .
3 .
Observe the
frequency counter
reading .
�
Increase the
setting of the Signal Generator FREQUENCY selector in
1 kHz
steps and verify that the frequency counter reading increases
by
1 .00 kHz ±1 count
for each step increase from
1 through
9 kHz .
�
The foregoing procedure verifies the 1 kHz resolution
specification .
4 .
Repeat the
procedure in step
3
for all other step in-
creases indicated in the table
below beginning with the
10
kHz digits .
If the actual counter frequency
increase per
step is equal
to the allowable increase per step
±1 count
for each of the steps indicated
in the table,
place a check
mark in the applicable space on line
1 of the PTR .
Accuracy
�
CW and AM modes
�
±0 .001% after 15 min .
(Typ ±0 .002% after
2 hours
within
3 months of calibration)
FMxl mode
�
±(0 .001% +10 kHz)
FMxl00 mode
�
±(0 .001% +45 kHz)
4-3
FREQUENCY Selector
FrecLuency Counter Reading
Ran_&e
(MHz )
Increase
per step
No .
Digits
Allowable Increase
per step ±1 count
050 .000-050 .009
1 kHz
7
1 .00 kHz
050 .000-050 .090
10 kHz
7
10 .00 kHz
050 .000-050 .900
100 kHz
6
100 .0 kHz
050 .000-059 .000
1 MHz
5
1 .000 MHz
001 .000-091 .000
10 MHz
5
10 .000 MHz
0.20 .000-520 .000
100 MHz
6
100 .00 MHz
A frequency counter
is used to measure frequency accuracy .
In CW and AM modes allfrequencies between
1 and 520 MHz are
derived from
a single crystal-controlled oscillator .
The
Signal Generator will be tested at one CW frequency to verify
that
the
crystal-controlled
oscillator
operates
within
specified limits .
Frequency
accuracy in FM modes depends
upon the FM system
accuracy .
The FM system accuracy includes the accuracy of
a voltage-controlled oscillator in addition
to the accuracy
of the crystal-controlled
oscillator .
Frequency
accuracy
in FMx1 and FMx100 modes
will be measured in VERNIER posi-
tion with a DC modulation signal equal to the peak of maxi-
mum sinusoidal modulation signals .
HP5300B/5303B
4 .
Set the Signal Generator
FREQUENCY selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
OUTPUT VERNIER
OUTPUT step attenuator
2 .
�
Connect the 50 ohm input of the
Signal Generator RF out connector .
3 .
The counter should read between 39,999 .60 and
kHz .
Record the counter reading to seven places
of the PTR .
Set the Signal Generator
FREQUENCY selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
controls as follows :
040 .000 MHz
CW
(Inactive in CW MODE)
(Inactive in CW MODE)
Fully Clockwise
+10 dBm
frequency counter
controls as follows :
001 .000 MHz
FMx1
VERNIER
5 kHz
6 .
Set the Signal Generator MODULATION MODE to FMx100 .
to the
40,000 .40
on line 2
5 .
The frequency
counter should
read between
994 .99 and
1,015 .01 kHz .
Record the counter reading to 6 places on line
3 of the PTR .
7 .
The frequency counter
should read between 1,454 .99 and
1,545 .01 kHz .
Record
the counter reading to
6 places on
line 4 of the PTR .
FREQUENCY STABILITY TEST
STABILITY
METHOD
EQUIPMENT
Frequency Counter
�
HP5300B/5303B
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
4 .5
OUTPUT LEVEL ACCURACY TESTS
SPECIFICATION
<0 .2 PPM/hour in CW and AM modes
500 Hz/10 minutes in FMx1 mode
The frequency stability is measured with a frequency counter
at the indicated time
intervals
after the
2
hour minimum
warmup .
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive)
MODULATION FM/AM
�
(Inactive)
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenautor
�
+10 dBm
2 .
Connect the 50
ohm input
of the
frequency counter
to
the Signal Generator RF out connector .
3 .
�
Allow the Signal Generator to warm up for two hours min-
imum.
Record the frequency counter readings to nine-places
at 15-minute intervals for a one-hour period .
�
The differ-
ence between the
maximum and minimum
readings in the one-
hour period should not exceed 104 Hz .
�
Record the difference
between
the maximum and
minimum readings in Ha
on line 5
of the PTR .
4 .
�
Set the
Signal Generator MODULATION MODE to FMx1,
�
the
MODULATION FREQ to VERNIER and
adjust the MODULATION FM/AM
control
to
5 kHz .
5 .
�
After a one-minute interval record the frequency counter
readings
to nine-places at five-minute intervals for a ten
minute period .
�
The difference between the maximum and mini-
mum readings in the ten-minute period should not exceed 500
Hz .
�
Record the difference between the maximum and minimum
frequency readings in Hz on line 6 of the PTR .
Power Level
�
+13 to -137 dBm
(1 V to 0 .03 PV)
PERFORMAKE TESTS
Attenuator Range
�
Continuously adjustable from +13 to -137 dBm,
in 10 dB steps
and an 11 dB vernier .
�
Output level is indicated on a front-
panel meter calibrated in dBm and volts rms .
4-5
+13 to -7 dBm :
�
±1 .25 dB
�
(Typ ±0 .75 dB)
Accuracy
�
-7
to -77 dBm :
�
±1 .95 dB
�
(Typ ±1 .25 dB)
<-77 dBm
�
±2 .75 dB
�
(Typ ±1 .5
dB)
Accuracy Breakdown
Flatness
�
(+13 to -7 dBm)
±0 .75 dB
�
(Typ ±0 .5 dB)
Output Meter
�
±0 .5 dB
Step Attenuator
±0 .5 dB to 70 dB
(±0 .2 dB calibration error)
±1 .0 dB to 130 dB
(±0 .5 dB calibration error)
The ±1 .25 dB level accuracy between +13 and -7 dBm consists
of the sum of the output meter error (±O.5 dB) and the flat-
ness
(±0.75 dB) .
Both errors
are
measured with a
power
meter .
The output
meter error is measured at
50 MHz in two 10 dB
output ranges
(+13 to +3 dBm and +3 to -7 dBm)
.
The flatness is measured relative to 50 MHz in 10 MHz steps
between 10 and 520 MHz at +12, +3 and -7 dBm output levels .
The level
accuracy below
-7 dBm depends
upon the
output
step attenuator error in addition to the output meter error
and the flatness .
The output step attenuator is a
combination of pi-pad sec-
tions of 10,
20,
30,
30 and 40 dB .
These five pi-pads are
programmed by cams to provide 0 to 130 dB of attenuation in
10 dB steps as shown in the table below .
OUTPUT STEP
ATTENUATOR POSITION
ACTIVE STEP ATTENUATOR PADS
(X)
dBm
10 dB
20 dB
30 dB
30 dB
40 dB
+ 10
0
- 10
x
- 20
x
- 30
x
- 40
x
x
- 50
x
x
- 60
x
x
- 70
x
x
x
- 80
x
x
x
- 90
x
x
x
-100
x
x
x
-
x
x
x
x
-
III
x
x
x
x
-130
x
I
x
'
x
x
x
i
Output Meter Accuracy Test
EQUIPMENT
Power Meter
and Sensor
PROCEDURE
Note that no step attenuator pads are active
in the +10 dBm
and 0 dBm positions .
A leveled pin-diode attenuator reduces
the output
level by
10 dB
in all
positions of
the output
step attenuator
below +10 dBm .
�
The output
level over
the
entire range of +13 dBm to -137 dBm including a 10 dB vernier
is controlled by the pin leveler system.
The output step attenuator error is measured by an
RF sub-
stitution method .
Each of the five pads in the output
step
attenuator is
measured at
520 MHz .
The second
30 dB pad
and the 40
dB pad are measured in
combination with
other
pads .
�
A reference output level is set with a power meter .
A reference trace is obtained with a spectrum analyzer and a
standard attenuator pad .
�
The standard pad is removed
and
the output step
attenuator position to be measured
is sub-
stituted .
�
The spectrum analyzer trace is
returned
to
the
reference level
by resetting
the Signal Generator
output
level .
�
The
resulting Signal
Generator
output
level
is
measured and compared to the original power meter reference
level .
�
A 26 dB RF
amplifier is required to
boost signal
levels below the -60 dBm level .
HP435A/8481A
1 .
Set the Signal Generator controls
FREQUENCY selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
OUTPUT VERNIER
OUTPUT step attenuator
power
cates
NOTE :
PERFORMANCE TESTS
as follows :
050.000 MHz
CW
(Inactive in CW MODE)
(Inactive in CW MODE)
Fully Clockwise
+10 dBm
Set the
sensor
2 .
Calibrate the
power meter
and power sensor .
power meter to the +15 dBm range .
�
Connect the power
to the Signal Generator RF out connector .
�
(When reading the
meter,
set the range switch
so
that
the meter indi-
between 0 and -5 dBm) .
The Signal Generator indicated output level is equal
to the sum of the OUTPUT meter reading and the step attenuator
setting .
�
The difference
between
the actual power
meter
reading and the indicated output
level is
the OUTPUT meter
error .
For example,
the indicated output
level is +13 dBm
for an
OUTPUT meter reading
of +3 dBm and
an OUTPUT
step
attenuator setting of +10 dBm .
�
If the power meter reading
is +13.15 dBm,
the OUTPUT meter error is +0 .15 dB .
4-7
4 .5 .2
Flatness Test
EQUIPMENT
4-8
Power Meter
�
HP435A/8481A
and Sensor
3 .
Adjust the Signal Generator OUTPUT VERNIER for
a +3 dBm
OUTPUT meter reading .
Observe the power meter reading and
make a note
of the OUTPUT meter error to
the nearest
0 .05
dB (4 division) .
Continue to adjust the OUTPUT VERNIER for
OUTPUT meter
reading increments of
1 dB between +3 and -7
dBm,
and note the
OUTPUT meter error at each reading .
�
As
the test progresses make a note of the maximum OUTPUT meter
error to the nearest 0 .05 dB .
�
The allowable error is ±0 .5
dB .
Record the maximum OUTPUT meter error on line 7 of the
PTR .
4 .
�
Set the Signal Generator OUTPUT step attenuatorto 0 dBm
and repeat step 3 above .
�
Record the maximum
OUTPUT meter
error on line 8 of the PTR .
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
050 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive in CW MODE)
MODULATION FM/AM
�
(Inactive in CW MODE)
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
2 .
Set the power meter to the +15 dBm range .
�
Connect the
power sensor to the Signal Generator RF out connector .
3 .
Adjust the Signal Generator
OUTPUT
VERNIER for a
+12
dBm power meter reading .
4 .
Set the
Signal Generator FREQUENCY
selector in 10 MHz
steps between 10 and 520 MHz and observe the maximum change
in the
power meter
readings from
the +12 dBm reading
in
step 3 .
The maximum allowable change is ±0 .75 dB .
Record
the maximum
change to the nearest 0 .05 dB
(k division) on
line 9 of the PTR.
5 .
Set the Signal Generator
FREQUENCY selector
to 050 .000
MHz and adjust
the OUTPUT VERNIER for a +3 dBm power meter
reading .
6 .
Repeat step 4
above
except observe the maximum change
in the power meter readings from the +3 dBm reading in step
5 .
Record the maximum change from the +3 dBm reading
to the
nearest 0 .05 dB on line 10 of the PTR .
4 .5 .3
Step Attenuator Accuracy Test
EQUIPMENT
Power Meter
�
HP435A/8481A
and Sensor
Spectrum Analyzer
�
HP8554L/8552B/141T
10 dB Attenuator
Pad
20 dB Attenuator
�
Weinschel 50-20
Pad
30 dB Attenuator
�
Weinschel 50-30
Pad
40 dB Attenuator
�
Weinschel 50-40
Pad
Wideband Amplifier
HP8447D
26 dB
7 .
Set the Signal Generator
FREQUENCY selector
to 050 .000
MHz and
the OUTPUT step attenuator
to 0 dBm .
Adjust the
OUTPUT VERNIER for a -7 dBm power meter reading .
Weinschel 50-10
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
AM
MODULATION FREQ
�
VERNIER
MODULATION FM/AM
�
0% AM
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
0 dBm
PERFORMAMCF TESTS
2 .
Set the power meter to the +10 dBm range .
�
Connect the
power sensor to the Signal Generator RF out connector .
3 .
Adjust the MODULATION FM/AM
control of the Signal Gen-
erator for a +7 dBm power meter reading .
NOTE :
�
Increasing
the MODULATION FM/AM control
setting in
the preceeding step
causes the OUTPUT meter needle
to
read
off scale .
This is normal .
8 .
Repeat step
4 above except observe the
maximum change
in the power meter readings from the -7 dBm reading in step
7 .
Record the maximum change from the -7 dBm reading
to the
nearest
0 .05 dB on line 11 of the PTR .
power sensor from the
Signal Generator
RF out connector .
�
Connect a standard
10 dB attenuator pad
to the RF out connector .
�
Connect the output
of the atten-
uator pad
to the
spectrum analyzer as shown in Figure 4-1 .
5 .
Set the spectrum analyzer to 520 MHz,
the bandwidth to
10 kHz, the frequency span per
division to
2 kHz,
and the
tuning stabilizer switch on .
Set the video filter to 100 Hz
and the vertical display to 2 dB per division .
MODEL 3000
SIGNAL GENERATOR
�
SPECTRUM ANALYZER
RF Out
O
STANDARD
ATTENUATOR
PAD
Figure 4-1 .
Step Attenuator Accuracy Setup
6 .
Use the
log reference controls to obtain
one division below
the log reference line of
analyzer display .
�
Center the
trace in the
fine tuning .
7 .
Set the OUTPUT step attenuator
to -10 dBm .
9 .
Adjust the MODULATION FM/AM control
erator to
realign the peak of the trace
the log reference line as in step 6 .
RF
Input
a
peak trace
the
spectrum
display
with
of the Signal Generator
8 .
Disconnect the 10 dB
attenuator pad from the setup and
reconnect the spectrum analyzer to
the RF out connector of
the Signal Generator .
of the Signal Gen-
one division below
10 .
Disconnect
the cable to
the Signal Generator
RF out
connector .
Connect the power sensor
to the Signal Generator
RF out connector .
Set the OUTPUT step attenuator to 0 dBm .
11 .
Observe the difference between
the actual power meter
reading
and the +7 dBm reference
setting in step 3 .
�
The
difference or error should be ±0 .7 dB maximum .
�
Record the
error on line
12 of the PTR .
Repeat steps 3 through
11 using the standard attenuator
pads and the Signal Generator OUTPUT step attenuator settings
indicated in the following table .
NOTE :
To test the OUTPUT step
attenuator below -60 dBm an
RF amplifier
(>20 dB gain)
is required .
Insert the 26 dB
wideband amplifier
between the standard attenuator pad and
the spectrum analyzer
(Figure 4-1) .
�
The allowable
error
for the -90 dBm
setting (step 11)
is ±1 .5 dB .
The OUTPUT
step attenuator can be tested down to the -130 dBm position
if a 40 dB RF amplifier is used and if precautions are taken
to properly shield the RF output from the Signal Generator .
Harmonics Outputs
�
>30 dB below fundamental from 10 to 520 MHz
>26 dB below fundamental from 1 to 10 MHz
A spectrum
analyzer is
used to measure harmonics
in
the
frequency range of the Signal Generator
at +13 and +3
dBm
output levels .
HP8554L/8552B/141T
1
.
Set the Signal Generator controls as follows
FREQUENCY selector
�
001 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive)
MODULATION FM/AM
�
(Inactive)
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
2 .
Connect the
Signal Generator
RF out connector
to the
RF input of the spectrum analyzer .
3 .
Set the spectrum analyzer
to measure the harmonic dis-
tortion of the Signal Generator for fundamental frequencies
between
1
and
10 MHz .
�
Set the bandwidth to 100 kHz,
the
4- 11
Steps 4 and 8
Attenuator pad
dB
-- -
Step
7
OUTPUT Step Attenuator
dBm setting
Step
11
Record Error on
Line of PTR
10
-10
12
20
-20
13
30
-30
14
60
-60
15
90
-90
16
Increase the setting
of the Signal Generator FREQUENCY
selector in 1 MHz steps between 1 and
10 MHz while observing
the spectrum analyzer display .
The harmonics should be >26
dB below the fundamental .
Record the maximum harmonic ob-
served in the
display in dB below the
fundamental on line
17 of the PTR .
5 .
�
Set the Signal Generator OUTPUT step attenuator to 0 dBm,
and repeat steps 3 and 4 at the +3 dBm output level .
�
Record
the maximum harmonic
observed in dB below the
fundamental
on line 18 of the PTR .
6 .
Set the Signal Generator
FREQUENCY selector to
10 MHz
and the OUTPUT step attenuator to +10 dBm .
7 .
Set the
spectrum analyzer
to measure
harmonic
�
dis-
tortion of the Signal Generator for fundamental frequencies
between 10 and 520 MHz .
�
Set the bandwidth to 300 kHz
and
the frequency span per division to 100 MHz .
8 .
Increase the setting of the Signal Generator
FREQUENCY
selector in 10 MHz steps between 10 and 520 MHz while observ-
ing the spectrum analyzer display .
The harmonics should be
>30 dB below
the fundamental .
Record the maximum harmonic
observed in the display in dB below the fundamental on line
19 of the PTR .
9 .
Set the
Signal Generator OUTPUT
step attenuator
to 0
dBm and repeat
steps
7 and 8 at
the +3 dBm output
level .
Record the maximum harmonic observed in dB below the funda-
mental on line 20 of the PTR.
SPECIFICATION
�
Non-harmonics are shown in the following table :
A
spectrum analyzer
is used to
measure the level of non-
harmonics in the
1 to 520 MHz range at +13 dBm,/the maximum
specified output level of the Signal Generator .
Fundamental Range
(MHz)
Non-harmonic Range
PiHz
-
Non-harmonic level
dB below fundamental
1 to 3
1 to 3
>60
3 to 250
3 to 250
>65
3 to 350
3 to 350
>55
3 to 520
3 to 1000
>35
frequency span per division to
5 MHz,
and the display
to 10
dB/div .
Locate the zero reference at the left edge of the
graticule,
and adjust the fundamental amplitude to the log
reference line (0 dB) in the display .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
001 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive)
MODULATION FM/AM
�
(Inactive)
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
PERFORMAMCF TESTS
2 .
Connect the Signal Generator RF out connector to the RF
input of the spectrum analyzer .
3 .
Set the spectrum
analyzer to measure
the non-harmonic
content of the Signal Generator ouptut between
1 and 3 MHz .
Set the bandwidth to 30 kHz, the frequency span per division
to
1 MHz
and the display
to 10 dB/div .
Locate the
zero
reference at the left edge of the graticule, and adjust the
fundamental to the log reference line (0 dB) in the display .
4 .
Increase the setting of
the Signal Generator FREQUENCY
selector in 1 MHz steps between 1 and 3 MHz .
The non-har-
monics between 1 and 3 MHz should be
60 dB below
the fun
damental .
�
Record the maximum non-harmonic observed in the
display between
1 and 3 MHz in dB
below the fundamental on
line 21 of the PTR .
5 .
�
Set the
�
spectrum analyzer
to measure
the non-harmonic
content of the Signal Generator output between 3 and 250 MHz .
Set the bandwidth to 300 kHz and the frequency span per div-
ision to 100 MHz .
6 .
Increase the setting of the Signal Generator
FREQUENCY
selector in 1 MHz
steps between 3 and 10 MHz and in 10 MHz
steps between 10
and 520 MHz while
observing the spectrum
analyzer
display .
Use the
table below
to determine the
maximum non-harmonic
level in each of the frequency ranges
shown .
�
Record the maximum non-harmonic level
observed in
each range
indicated in
the table on
the applicable line
of the PTR.
Frequency
Non-harmonic
Non-harmonic
Record Max
Range of
Frequency Range
Level
(dB be-
Non-harmonic
Fundamental
low fundamental)
(Line number
(MHz)
MHz
in PTR)
3-250
3-250
>65
22
3-350
3-350
>55
23
3-520
3-1000
>35
24
RESIDUAL AM TEST
SPECIFICATION
�
>65 dB below carrier in a
50
Hz to
15 kHz
post-detection
bandwidth .
METHOD
EQUIPMENT
Modulation Meter
�
Radiometer AFM2
Distortion Analyzer HP334A
A modulation meter
operating in AM mode
is used
to demodu-
late the Signal Generator
output at
the
minimum
leveler
point where AM noise is maximum .
A distortion analyzer (oper-
ating in level mode)
is used to increase
the resolution of
the demodulated output
of the modulation meter .
The system
is calibrated at a 10% AM level .
The 10% AM is removed and
the residual AM
�
is read in dB below the
�
calibrated
10%
�
AM
level .
�
20 dB is added to the reading to relate the residual
AM to the carrier .
PROCEDURE
�
1 .
Set the Signal Generator controls
as follows :
FREQUENCY selector
�
500.000 MHz
MODULATION MODE
�
AM
MODULATION FREQ
�
1 kHz
MODULATION FM/AM
�
0% AM
OUTPUT VERNIER
�
-7 dBm reading on OUTPUT meter
OUTPUT step attenuator
�
0 dBm
Figure 4-2 .
Residual AM Setup
3 .
�
Set the modulation
meter to read %AM at 500 MHz .
�
Set
the RF input attenuation to
10 dB,
the IF bandwidth to ±400
kHz,
the meter response to fast,
the function switch to +AM,
the meter range switch
to
10 and the filter bandwidth to
50
Hz-15 kHz .
2 .
Connect the equipment as shown in Figure 4-2 .
Model 3000
Signal
Generator
Modulation Meter
Distortion Analyzer
Input
RF
AF
O
RF Out
Input
OutDut
RESIDUAL FM TEST
4 .:
�
Adjust the Signal Generator MODULATION FM/AM control for
a modulation
meter
reading of 10% AM .
�
NOTE :
�
10% AM
is
obtained at a full-scale reading of
100 with the modulation
meter range switch set to 10 .
5 .
With the
distortion analyzer operating in
level mode,
calibrate it for a 0 dB panel-meter reading. The system is
now calibrated at a reference level 20 dB below the carrier .
Since the modulating signal and carrier amplitudes are equal
at 100% AM, it follows that at 10% AM the modulating signal
is 20 dB below the carrier .
6 .
�
Set the
Signal Generator
MODULATION MODE switch
�
to
"EXT" .
7 .
Without disturbing the
Signal Generator and modulation
meter controls,
set the distortion analyzer to read residual
AM .
�
Set the
range switch
so that
the panel meter reads
between 0 and -10 dB .
�
First, read
the
residual AM below
the 0 dB reference level in step 5 .
�
Then add 20 dB to the
above reading
to obtain
the residual AM below the carrier .
(For example, a 48 dB residual AM
below the 0 dB reference
+20 dB = 68 dB residual AM below the carrier .) The residual
AM should be >65 dB below the carrier .
Record the residual
AM in dB below the carrier on line 25 of the PTR .
As many other carrier frequencies may be tested as desired .
SPECIFICATION
�
<200 Hz in a 50 Hz to 15 kHz post-detection bandwidth .
(Typ
100 Hz .)
<100 Hz in a 300 Hz to
3 kHz post-detection band-
width .
(Typ 50 Hz .)
METHOD
�
A modulation-meter which is set to read frequency deviation
is used
to measure residual FM .
�
The test is performed at
maximum frequency
and output level .
�
The Signal Generator
is operated in an FM mode where the.residual FM is greatest .
The residual FM is measured in an environment where the noise
level <60 dB relative to 2x10-4 pbar .
EQUIPMENT
Modulation Meter
�
Radiometer AFM2
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
FMx100
MODULATION FREQ
�
EXT
MODULATION FM/AM
�
0 kHz
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
PERFORMAKE TESTS
4-15
Amplitude & Fre-
quency Modulation
4 .10
INTERNAL MODULATION FREQUENCY TEST
2 .
Connect the
Signal Generator
RF out connector
to the
50 ohm RF input of the modulation meter .
3 .
Set the
modulation meter
to read FM deviation
at 520
MHz .
�
Set the meter range switch to 3, the RF input attenuation
to 20 dB,
the IF bandwidth to t400 kHz,
�
the meter response
to fast and the filter bandwidth to 50 Hz-15 kHz .
4 .
Measure
the average level
of the FM deviation
on the
modulation meter and disregard occasional peaks .
The resi-
dual FM should be <200 Hz .
Read the residual FM on the panel
meter with the function switch set to +FM and then -FM posi
tions .
�
Record the greater of the two readings
in Hz on line
26 of the PTR .
As many other frequencies may be tested as desired .
Internal
�
400 Hz and
1 kHz +5I
A frequency counter is used to measure modulation frequency
at the rear-panel modulation test pointof the Signal Gener-
ator .
Since the internal 400 Hz and
1 kHz oscillators are
used for
both the AM and FM modes,
this test will suffice
for both modes .
EQUIPMENT
Frequency Counter
�
HP5300B/5303B
PROCEDURE
�
1 .
Set the Signal Generator controls as follows
FREQUENCY selector
�
N/A (not applicable to this test)
MODULATION MODE
�
N/A
MODULATION FREQ
�
400 Hz
MODULATION FM/AM
�
Mid-range
OUTPUT VERNIER
�
N/A
OUTPUT step attenuator
�
N/A
2 .
�
Connect the low frequency input of the frequency counter
to the rear-panel
MODULATION T .P .
of the Signal Generator .
NOTE :
Provide a ground connection between
the Signal Gen-
erator and the counter .
3 .
The counter should read between 380 and 420 Hz .
Record
the counter reading on line 27 of the PTR.
MODULATION FREQ control
to
1 kHz .
5 .
�
The counter should
read between 950 and 1050 Hz .
�
Record
the counter reading on line
28 of the PTR .
4 .11
PERCENT AM ACCURACY TEST
SPECIFICATION
Accuracy
�
±(5% of reading +5I) at a frequency of
1 kHz
This specification applies
for output
limits
:S-+3 dBm .
�
AM
is possible above +3 dBm if the peak of the modulated output
does not exceed +13 dBm .
The %AM accuracy is measured with a modulation meter after the
front-panel
modulation FM/AM control
error, which is t4%,
is subtracted out .
The FM/AM control accuracy, which consists
of the
control linearity and the modulation scale
errors
is measured
in terms of the
DC voltage at the
rear panel
modulation test point .
�
The calibration of the voltage across
the control at maximum position
is checked initially .
The remaining
%AM accuracy, which is
±(57
of the reading +
1% of full
scale),
is measured by
the modulation meter with
accurately measured voltage applied
to the Signal Generator
modulation system .
The measurement uncertainty is 2%
of
the reading +17 of full scale .
EQUIPMENT
Modulation Meter
�
Radiometer AFM2
Digital Multimeter
Dana 4300
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
VERNIER
MODULATION FM/AM
�
0% AM
OUTPUT VERNIER
�
-3 dBm reading on OUTPUT meter
OUTPUT
step attenuator
�
0 dBm
2 .
Connect the equipment as shown in Figure 4-3 .
PFRFORMAMCF TESTS
NOTE :
�
Provide aground connection between the Signal Gener-
ator and the digital multimeter .
Figure 4-3 .
Percent AM Accuracy Setup
3 .
Adjust
the Signal Generator
MODULATION FM/AM
control
to its maximum up position .
4 .
The digital
multimeter should
read 5 .000 ±0 .020 volts
DC .
If the voltage is within limits,
continue
to step
5 .
If out of limits,
the voltage should be recalibrated .
5 .
�
Adjust the Signal Generator MODULATION FM/AM control
to
30% AM .
6 .
The digital
multimeter should
read between
1 .300
and
1 .700 volts DC .
�
Record the reading on.line 20 of the PTR.
7 .
Set the
Signal Generator
MODULATION FM/AM
control to
90% AM .
8 .
The digital
multimeter should read between
4 .300
and
4 .700 volts DC .
�
Record the reading on line 30 of the PTR .
9 .
�
Adjust the Signal Generator MODULATION FM/AM control to
OI AM .
NOTE :
This concludes the MODULATION FM/AM control accuracy
test .
As many other points may be tested as desired .
10 .
�
Set the modulation meter to read %AM at 520 MHz .
�
Set
the meter range switch to 100,
the RF input attenuation to
10 dB,
the IF bandwidth to ±400 Hz,
the meter response to
fast,
the function switch to +AM
and the filter bandwidth
to 50 Hz-15 kHz .
11 .
Adjust the
Signal Generator MODULATION FM/AM
control
for a reading of 1 .500 ±0 .003 volts DC on the digital multi-
meter .
Set the MODULATION FREQ switch to 1 kHz and the MOD-
ULATION MODE switch
to AM.
AM BANDWIDTH TEST
SPECIFICATION
METHOD
Modulation Freq .
�
DC to 20 kHz
(+3 dB bandwidth)
External
EQUIPMENT
PERFORMANCE TESTS
12 .
Make a
note of the modulation
meter reading in
%AM .
Set the
modulation meter function switch
to
-AM, and note
the modulation
meter %AM reading as
before .
Compute
the
average
of the two
readings .
The average
%AM should
be
between 27 .5 and
32 .5% .
Record the average %AM to the near-
est
0 .5% on line 31 of the PTR .
13 .
�
Set the Signal Generator
MODULATION MODE switch to CW
and the MODULATION FREQ switch to VERNIER .
14 .
Adjust
the Signal Generator MODULATION FM/AM
control
for a reading of 4 .500 ±0 .003 volts DC on the digital multi-
meter .
Set the
MODULATION
FREQ switch to
1 kHz and the
MODULATION MODE switch to AM .
15 .
Make a
note of the
modulation meter reading
in %AM .
Set the modulation function switch to +AM and note the modu-
lation meter %AM reading as before .
Compute the average of
the two readings .
�
The average %AM should be
between 84 .5
and 95 .5% AM .
�
Record the average
%AM to the nearest
0 .5%
on line 32 of the PTR .
NOTE :
This
concludes the modulation system accuracy test .
As many other points may be tested as desired .
The measurement is
made with a modulation meter
operating
in AM mode and afunction generator .
The function generator
supplies
an external sine wave to
amplitude modulate
the
Signal Generator .
The system is calibrated at -6 dB on the
modulation meter dB scale (approximately 50% AM) .
�
The exter-
nal modulation frequency
is increased from 1 kHz to 20 kHz
and the AM bandwidth is measured as
the change in dB level
from the calibration level .
Modulation Meter
�
Radiometer AFM2
Function Generator
Wavetek 130
Oscilloscope
�
Tektronix D10/5A18N/5B10N
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
050 .000 MHz
MODULATION MODE
�
AM
MODULATION FREQ
�
EXT
MODULATION FM/AM
�
0% AM
OUTPUT VERNIER
�
+3 dBm reading on OUTPUT meter
OUTPUT step attenuator
�
0 dBm
4-19
Connect the equipment
as shown in Figure 4-4 .
Oscilloscope
TEE
Figure 4-4 .
AM Bandwidth Setup
3 .
Set the
modulation meter
to read %AM at 50 MHz .
�
Set
the RF input attenuation to 20 dB,
the IF bandwidth to t400
kHz :, the meter response
to fast,
the function switch to +AM,
the meter
range switch to 100 and the filter
bandwidth to
75 kHz .
4 .
Set the function generator for a
1 kHz sine wave output
and the
attenuator controls for a 10 volt p-p sine wave on
the oscilloscope .
5 .
Adjust the
Signal Generator
MODULATION FM/AM
control
for a modulation meter
reading of -6 dB
(approximately 50%
AM) .
6 .
Maintain the
10 volt p-p output
level and increase the
function generator frequency from
1 to 20 kHz .
Observe the
modulation meter scale .
�
It should read between
-3 and -9
dB .
�
Note the change in dB from the -6 dB calibration level .
7 .
Repeat steps 4 through 6 with the modulation meter fun-
ction switch
set to -AM .
Note the change in dB
from the
-6 dB setting as in step
6 .
8 .
Record
the larger
of the
two dB
changes obtained
in
steps 6 and 7 on line 33 of the PTR .
AM DISTORTION TEST
SPECIFICATION
Distortion
�
<3% distortion to 70% AM
(<5% to 90% AM) at a frequency
of
METHOD
EQUIPMENT
1 kHz
(Typ
<1 .5% to 30% AM)
Modulation Meter
�
Radiometer AFM2
Distortion Analyzer HP334A
PERFORMANCE TESTS
This specification applies for output
limits
_<+3 dBm .
AM
is possible above +3 dBm if the peak of the modulated output
does not exceed +13 dBm .
The measurement is
made with a modulation meter and a dis-
tortion analyzer,
which measures the distortion of the de-
modulated AM from the modulation meter .
The measurement is
made at the minimum leveler point where the AM distortion is
normally worst-case .
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
AM
MODULATION FREQ
�
1 kHz
MODULATION FM/AM
�
0% AM
OUTPUT VERNIER
�
-7 dBm reading on OUTPUT meter
OUTPUT step attenuator
�
0 dBm
2 .
Connect the equipment as shown in Figure 4-5 .
Figure 4-5 .
AM Distortion Setup
3 .
�
Set the modulation meter to read %AM at 520 MHz .
�
Set the
RF input attenuation to 10 dB,
the IF bandwidth to ±400 kHz,
Model 3000
Signal Generator
Modulation Meter
Distortion Analyzer
Input
RF
AF
O
RF Out
Input
Output
O
FM DEVIATION ACCURACY TEST
SPECIFICATION
the meter response to fast, the function switch to +AM,
the
meter range switch to
100 and the filter bandwidth to 50 Hz
to
15 kHz .
4 .
Adjust
the Signal Generator
MODULATION FM/AM
control
for a modulation meter reading of 70% AM .
Set the modulation
meter function switch
to -AM, and
observe the
modulation
meter reading .
Readjust the MODULATION FM/AM control until
the average of the two modulation meter readings in +AM and
-AM positions
of the modulation
meter function switch
is
equal to 70% AM .
5 .
Calibrate the distortion
analyzer and measure the dis-
tortion .
The distortion should be less than 3% .
Record the
distortion on line 34 of the PTR .
6 .
Adjust the Signal Generator MODULATION FM/AM control as
in step 4 until the average of the modulation meter readings
in +AM and -AM positions of the modulation function
switch
is equal to 90% AM .
7 .
Calibrate the distortion
analyzer and measure the dis-
tortion .
The distortion should
be less than 5% .
Record
the distortion on line 35 of the PTR .
Deviation Accuracy
±250 Hz on FMx1 range
±35 kHz on FMx100 range
The deviation is measured in both FM modes using an internal
DC voltage
equal to the peak
of the internal
sine
wave
voltages .
A frequency counter
is used to measure the maxi-
mum deviation in both FM modes .
EQUIPMENT
Frequency Counter
�
HP5300B/5303B
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
050 .000 MHz
MODULATION MODE
�
FMx1
MODULATION FREQ
�
VERNIER
MODULATION FM/AM
�
5 kHz on FM scale
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
2 .
Connect
the 50 ohm
input of the
frequency counter to
the Signal Generator RF out connector .
FM BANDWIDTH TEST
SPECIFICATION
EQUIPMENT
PERFORMANCE TESTS
3 .
Read the
frequency counter
and record
the reading
to
8 places on line 36 of the PTR .
4 .
Adjust the Signal Generator MODULATION FM/AM control to
0 kHz deviation on the FM scale .
5 .
Read the frequency counter and
record the reading
to 8
places on line 37 of the PTR .
6 .
�
Subtract the reading obtained in step 5 from the reading
obtained in step 3 .
�
The difference between the two readings
should be between 4 .749 and
5 .251 kHz .
�
Record the difference
in kHz on line 38 of the PTR .
7 .
�
Set the Signal Generator MODULATION MODE
to FMx100 and
adjust
the
MODULATION
FM/AM
control to 5 kHz
deviation
on the FM scale .
8 .
Read the frequency counter
and record the reading to
6
places on line 39 of the PTR .
9 .
Adjust the Signal Generator MODULATION FM/AM control
to
0 kHz deviation on the FM scale .
10 .
Read the frequency counter and record the reading to
6
places on line 40 of the PTR .
11 .
�
Subtract the reading obtained instep
10 from the read
ing obtained in
step 8 .
�
The difference
between the
two
readings should be between 464 .9 and 535 .1 kHz .
Record the
difference in kHz on line 41 of the PTR .
Modulation
�
External, DC to >25 kHz
(1 dB bandwidth)
Frequency
METHOD
�
The measurement is made with a modulation meter and a func-
tion generator .
�
The function generator supplies an external
sine wave to frequency modulate the Signal Generator .
�
The
system is
�
calibrated at
0 dB on the
modulation meter
dB
scale (approximately 320 kHz deviation) .
The external mod-
ulation frequency is increased from
1 kHz to 25
kHz and FM
bandwidth is
measured as the
change in dB
level from the
calibration level .
Modulation Meter
�
Radiometer AFM2
Function Generator
Wavetek 130
Oscilloscope
�
Tektronix D10/5A18N/5B10N
4-23
Set the Signal Generator controls as follows :
4- 24
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
FMx100
MODULATION FREQ
�
EXT
MODULATION FM/AM
�
0 kHz
OUTPUT VERNIER
�
+3 dBm reading on OUTPUT meter
OUTPUT step attenuator
�
+10 dBm
2 .
Connect the equipment as shown in Figure 4-6 .
Oscilloscope
TEE
Figure 4-6 .
FM Bandwidth Setup
3 .
�
Set the
modulation meter
to read FM deviation
at 520
MHz .
�
Set the RF input attenuation
to 20 dB,
the IF band-
width to ±400 kHz,
the meter response
to fast,
the function
switch
to +FM,
the meter range switch
to 300 and the filter
bandwidth to 75 kHz .
4 .
Set the
function generator for a
1 kHz
sine wave out-
put and the attenuator controls for a 10 volt p-p sine wave
on the oscilloscope .
5 .
�
Adjust the Signal Generator MODULATION FM/AM control for
a modulation
meter reading of 0 dB
(approximately 320 kHz
deviation) .
6 .
�
Maintain the 10 volt p-p output level and slowly increase
the function
generator
frequency from 1
to 25 kHz
while
observing
the dB scale on the modulation meter .
�
It should
read between +1 and -1 dB .
Note the maximum change from the
0 dB calibration level .
7 .
�
Repeat steps 4 through 6 with the modulation meter func-
tion switch set
to -FM .
Note the change from the
0 dB set-
ting as in step
6 .
FM DISTORTION TEST
SPECIFICATION
METHOD
Distortion
�
<4%
(3 to 10 kHz deviation),
-<2%
(10 to 500 kHz deviation)
at a frequency of
1 kHz
EQUIPMENT
Modulation Meter
�
Radiometer AFM2
Distortion Analyzer HP334A
8 .
Record the
larger
of the two dB
changes obtained
in
steps
6 and
7 on line 42 of the PTR .
The measurement is made with
a modulation meter and a dis-
tortion analyzer, which measures the distortion
of the de-
modulated FM from the modulation meter .
Distortion below 3
kHz deviation increases because of residual FM noise .
The
distortion at
3 kHz deviation
is measured in an environment
where the noise level <60 dB relative to 2x10-4 ubar .
PROCEDURE
�
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
520 .000 MHz
MODULATION MODE
�
FMxl
MODULATION FREQ
�
1 kHz
MODULATION FM/AM
�
3 kHz
OUTPUT VERNIER
�
Fully Clockwise
OUTPUT step attenuator
�
+10 dBm
2 .
Connect the equipment as shown in Figure 4-7 .
Figure 4-7 .
FM Distortion Setup
PERFORMANCE TESTS
3 .
�
Set the modulation meter to read FM deviation at 520 MHz .
Set the
RF input attenuation
to 20 dB, the IF bandwidth to
t400 kHz, the meter response to fast,
the function switch to
4-25
Model 3000
Signal
Generator
Modulation Meter
Distortion Analyzer
Input
RF
AF
O
RF Out
IrIput
Output
O
Type N Female
�
HP11511A
+FM,
�
the meter range switch to
3 and the filter
bandwidth
to 50 Hz-15 kHz .
The modulation meter should read approxi-
mately 3 kHz .
4 .
�
Calibrate the distortion analyzer and measure distortion .
The distortion should be less than 4% .
�
Record the distor-
tion on line 43 of the PTR .
5 .
�
Set the
meter range switch of the
modulation meter to
300 .
�
Set the
�
Signal Generator
MODULATION MODE to FMx100 .
6 .
�
Adjust the Signal Generator MODULATION FM/AM for a read-
ing of 300 kHz deviation on the modulation meter .
7 .
�
Calibrate the distortion analyzer and measure the distor
tion .
�
The distortion should be less than 2% .
�
Record the
distortion on line 44 of the PTR .
Impedance
�
50 ohm, .VSWR
1 .2 at RF output levels below 0 .1 V .
METHOD
�
The measurement is
made with a VSWR bridge and
the return
loss is displayed on a spectrum analyzer .
�
An RF signal from
a sweep/signal generator
is fed to the input of the bridge .
A reference level
is
established by
shorting the
bridge
output port .
�
The short is replaced by the RF impedance of
the Signal Generator .
�
The sweep/signal generator
is tuned
from
1
to 520 MHz and the
return loss versus frequency is
displayed .
1 .
Set the Signal Generator
FREQUENCY selector
MODULATION MODE
MODULATION FREQ
MODULATION FM/AM
OUTPUT VERNIER
OUTPUT step attenuator
controls as follows :
520 .000 MHz
CW
(Inactive)
(Inactive)
+3 dBm reading on OUTPUT meter
-10 dBm
Use the setup in Figure 4-8 .
�
Connect the sweep/signal
generator to the
input port,
the spectrum
analyzer
to the
reflected output port and
the coaxial short to the device-
under-test port of the VSWR bridge .
3 .
Set the sweep/signal generator output level to -10 dBm,
the mode to CW and the center frequency to 250 MHz .
4 .
�
Set the
�
spectrum analyzer
to span 0 to 500 MHz and the
bandwidth to 300 kHz .
Use the log reference level controls
to calibrate the 250 MHz signal at the top line
(0 dB refer-
ence) of the display graticule .
5 .
Disconnect the
coaxial short
and connect the
device-
under-test port of
the VSWR bridge to the Signal Generator
RF out connector .
Use the
sweep/signal generator
center
frequency control to tune from 1 to 520 MHz and verify that
the signal level
in the display
is >21
dB below the 0
dB
reference .
Disregard the signal
at 520 MHz .
�
Record
the
reading in
dB below the
reference on line 45
of the PTR .
Model 3000
Sweep/Signal
Generator
�
Signal Generator
Figure 4-8 .
Test Setup
PERFORMANCE TESTS
Step 2
Coaxial
SMrt
SPECIFICATION
�
<1 .0 pV is
induced in a
two-turn,
one-inch
diameter loop
which is held one inch away from any surface .
Loop feeds a
50 ohm receiver .
50 ohm Load
Loop Probe
Attenuator Pads
(100 dB)
PROCEDURE
A 50 ohm receiver consisting of a 26 dB amplifier and a spec-
trum analyzer are calibrated at a
1
pV level using the Sig-
nal Generator .
A loop probe is then connected to the receiver
and the leakage is measured at a one-inch distance from the
external surfaces of
the Signal Generator with the RF out-
put terminated
in 50 ohms .
A screen room
may be required
for this measurement .
HP8544L/8552B/141T
HP3447D
HP11593A
See Figure 4-9
Weinschel 50-10,
50-20,
50-30,
50-40
1 .
Set the Signal Generator controls as follows :
FREQUENCY selector
�
500 .000 MHz
MODULATION MODE
�
CW
MODULATION FREQ
�
(Inactive)
MODULATION FM/AM
�
(Inactive)
OUTPUT VERNIER
�
Set to +3 dBm on OUTPUT meter
OUTPUT step attenuator
�
-110 dBm
Figure 4-9 .
Loop Probe
1 .
Rexolite Rod :
�
1 .25 in .
dia . by
11 in .
2 .
Hole :
1 .00 in dia .
by 0 .80 in .
deep .
3 .
Groove :
�
0 .120 in
. wide by 0 .125
in deep
1 .00 in from end of rod .
4 .
Coaxial Cable :
(RG-174/U) 0 .110"
diameter
by
19"
long .
Strip
shield
for 7
in,
and cut
off
shield to 1 in length .
�
Strip in-
sulation
from center
conductor
in .
Wind
2 turns of insulated
center conductor
in
groove
of
rod .
�
Solder shield
to center con-
ductor,
and insulate the solder
joint .
5 .
Wind
mylar tape around the two-
turn
loop, and
around the
rod
(three places)
.
6 .
BNC male connector .
Connect the equipment as shown in Figure 4-10 .
Model 3000
Signal Generator
�
26 dB RF Amplifier
�
Spectrum Analyzer
RF Out
Input 00
Step 4
Output
Figure 4-10 .
RF Leakage Setup
3 .
Set the
spectrum analyzer
bandwidth
to 100 kHz,
the
scan width
to 0 .5
MHz/div,
the video
filter
to
100 Hz,
to 0 dB and the
log reference level
Center the sig-
control .
Cali-
at the -31 dBm
the input attenuation
to -50 dBm with a 10 dB/div vertical scale .
nal in the display using the center frequency
brate the analyzer
for the -107 dBm signal
graticule using the log reference controls .
PFRFORMANCF TESTS
RF Input
4 .
Disconnect the
RF amplifier from the Signal Generator,
and connect a 100 dB attenuator pad (10+20+30+40)
to
RF out connector of
the Signal
Generator .
Terminate
attenuator in a 50 ohm load .
the
the
5 .
Set the
Signal Generator OUTPUT step attenuator to -10
dBm, and the OUTPUT VERNIER to a +3 dBm reading on the OUTPUT
meter .
6 .
�
Connect the loop .probe to the input of the RF amplifier .
Move the loop probe over the surfaces of the Signal Genera-
tor
with
the two-turn
loop at
a one-inch distance .
The
signal plus noise should be less than the -107 dBm reference
(step 2) .
�
Record the maximum reading in dBm on line 46 of
the PTR .
PERFORMANCE TEST RECORD
�
S/N
MODEL 3000
�
DATE
SEC
TEST
MINIMUM SPECIFICATION
MEASUREMENT
MAXIMUM SPECIFICATION
LINE
4 .2
FREQ RANGE
(
)
CHECK
1
39,999 .60 kHz
kHz
40,000 .40 kHz
2
4 .3
FREQ ACCURACY
994 .99 kHz
kHz
1,015 .01 kHz
3
1,454 .99 kHz
kHz
1,545 .01 kHz
4
Hz
104 Hz
5
4 .4
FREQ STABILITY
Hz
500 Hz
6
dB
+0 .5 dB
7
4 .5 .1
METER ACCURACY
-0 .5
dB
dB
8
dB
9
4 .5 .2
FLATNESS
-0 .75 dB
dB
+0 .75 dB
10
dB
11
dB
12
dB
13
4 .5 .3
STEP ATT ACCURACY
-0 .7
dB
dB
+0 .7 dB
14
dB
15
-1 .5 dB
dB
+1 .5 dB
16
dB
17
26
dB down
dB
18
4 .6
HARMONICS
dB
19
30 dB down
dB
20
60 dB down
dB
21
65 dB down
dB
22
4 .7
NON-HARMONICS
55 dB down
dB
23
35 dB down
dB
24
4 .8
RESIDUAL AM
65 dB down
dB
25
4 .9
RESIDUAL FM
Hz
200 Hz
26
380 Hz
Hz
420 Hz
27
4 .10
INT MOD FREQUENCY
950 Hz
Hz
1050 Hz
28
1 .300 VDC
VDC
1 .700 VDC
29
FM/AM CONTROL ACC
4 .300 VDC
VDC
4 .700 VDC
30
4 .11
27 .5 %
%
32 .5 %
31
AM SYSTEM ACCURACY
84 .5 %
%
95 .5 %
32
4 .12
AM BANDWIDTH
dB
3 dB
33
3 %
34
4 .13
AM DISTORTION
5 %
35
kHz
36
kHz
37
4 .749 kHz
kHz
5 .251 kHz
38
4 .14
FM DEVIATION ACC
kHz
39
kHz
40
464 .9 kHz
kHz
535 .1 kHz
41
4 .15
FM BANDWIDTH
dB
1 dB
42
4 %
43
4 .16
FM DISTORTION
%
2 %
44
4 .17
IMPEDANCE
21
dB down
dB
45
4 .18
RFI
dBm
-107 dBm
46
section provides information
for
disassembling,
calibrating and trouble-
shooting the Model 3000 Signal Generator .
Measurements
and adjustments
will
be
facilitated
by placing
instrument
on
its right side,
as access
is required
to top
and bottom of
unit for adjust-
ments and test points .
5 .2
SERVICE INFORMATION
5 .2 .1
Disassembly Information
Refer to
Figure 5-1 .
�
The side panels
form part of the support for the top and
bottom covers ;
therefore,
these covers
should be removed before removing either
side panel .
�
The covers and panels can
be removed as indicated
below .
�
NOTE :
One side
panel must remain on
the in-
strument
to
secure the front-panel as-
sembly to the chassis .
REMOVAL
OF BOTTOM COVER - Remove
�
two
rear feet
(A) and lift cover off with a
slight rear movement .
�
Reinstall cover
by
reversing
the
removal
procedure .
REMOVAL OF TOP COVER - Remove the single
screw
(B)
from top
and lift off cover
with a slight rear movement .
Reinstall
cover by reversing the removal procedure .
REMOVAL OF FRONT TOP RAIL - The top rail
may be removed
to facilitate removal of
the meter board assembly .
The rail is
removed
by removing
three screws
(D)
and lifting rail upward .
REMOVAL OF SIDE PANEL - Either side panel
can be removed to provide better access
SECTION S
MAINTENANCE
by
removing the six screws
(E) holding
side panel to the instrument .
Figure 5-1 .
Disassembly
5 .2 .2
Module Servicing
REMOVAL OF MODULE - Modules may
be re-
moved by
removing any cables
attached
to top
of the module and removing hold-
down screw (C) from bottom .
Rock module
slightly
while lifting upward
to
free
module from chassis socket .
REINSTALLING MODULE - Before installing
the module,
check that module pins are
straight
and properly
aligned ;
then,
carefully seat
module
pins
into the
chassis
socket,
replace module
hold-
down screw
(C)
to insure a good ground
connection
between module and chassis,
and replace any cables
attached
to top
of module .
�
Module-cable connections are
shown in Figure 5-6 .
�
NOTE :
�
If a module
is replaced with a new module,
�
it will
be
necessary to
calibrate the
phase-
locked loop or other circuits
involved .
See Calibration Procedure
in this sec-
tion .
MODULE-PIN NUMBERING SYSTEM -The module
pins are numbered as shown in Figure 5-2 .
The off-center index
stud prevents the
module's being plugged in
backward and
also provides a method for locating pin
#1 .
NOTE :
All 16pins are not required
in each module ;
only the pins actually
used
are installed,
but the
numbering
system remains the same .
INDEX STUD
(off
center)
BOTTOM VIEW
PIN SOCKET
Figure 5-2 .
�
Module Pin Numbering System
5 .2 .3
Printed-Circuit Board Servicing
PRINTED-CIRCUIT BOARD CONNECTORS - When
reinstalling
a
cable connector
on
a
printed-circuit board, be sure connector
is properly aligned with the board con-
nector
pins and
that connector
faces
proper
direction
(See
Figure
5-3) .
CAUTION :
Failure to properly orientate
the connector
can result in
damage
to
modules or power supply .
CABLE
_
CONNECTOR
PCB
CONNECTOR
J
SIDE VIEW
�
END VIEW
RETAINING
CL IP
Figure 5-3 .
Connector Alignment
METER-BOARD
(C315) REMOVAL - Removal of
the meter-board
assembly requires that
the attenuator
dial,
VERNIER knob and
potentiometer retaining
nut and
front
top rail be removed .
�
The meter board is
secured to front panel by three screws -
one through
front panel
(behind atten-
uator dial) and
one at each top corner
of
meter
board .
�
Remove these
three
screws and disengage
six-pin connector
from meter board .
�
Remove
three
slip-
on
wire
connectors
from
attenuator
switch .
The
meter-board assembly
can
then be
moved
toward
rear until
the
VERNIER potentiometer
shaft, UNLEVELED
LED and
meter
case
clear
the
front
panel ;
then the
board
can be
lifted
from instrument .
The meter board is
reinstalled by re-
.
versing the removal procedure .
NOTE :
When installing
the
meter board, use
care not to damage
the UNLEVELED Lamp .
MODULATION BOARD
(C316) REMOVAL -
�
The
modulation-board
assembly can
be
re-
moved by the following procedure :
Dis-
engage the slip-on
connectors from the
six BCD FREQUENCY switches ;
remove the
black spring-loaded knobs from the MODU-
LATION MODE
and FREQ
switches ;
remove
retaining
nut from EXT modulation
BNC
connector ;
disengage nine-pin connector
from
modulation board ;
and remove one
screw at each top corner of
modulation
board .
�
The board assembly can then be
moved toward
rear until switch
levers
clear the front panel ; then, the assembly
may be lifted from instrument .
The board
assembly is
reinstalled
by
reversing the removal procedure .
NOTE :
When placing connectors
on
FREQUENCY
switches, be sure each
connector is on
correct switch,
switch cables break out
of
main
harness in
same order
�
that
switches appear .
POWER SUPPLY BOARD REMOVAL - The
Power
Supply board and heatsink can be removed
by removing the four screws which secure
the printed circuit board to the instru-
ment rear panel .
After removal of
the
connecting harnesses,
the
board can be
carefully lifted
from the instrument .
raised far enough to allow checking
of
many
components
with
the
harnesses sti11connected ; however,
power must NOT
be
applied to the
instrument
unless
the
negative
INSTRUMENT
Digital Voltmeter
5 .3
CALIBRATION PROCEDURE
.04% Accuracy
Remove
the
instrument
top
cover,
the
bottom
cover,
and
the
M172
module
cover .
The M172 module can
be located
by reference to Figure 5-6 ;
then remove
screw from top of module and slide cover
off .
Allow a two-hour
warmup
period
before calibrating .
In general,
calibration should be per-
formed in the sequence given .
Refer to
Figures 5-4,
5-5 and 5-6 for test point
and
adjustment locations .
NOTE :
All
measurements are made with reference
to
chassis ground .
5 .3 .1
+18 Volt Adjustment
Connect digital voltmeter to orange +18
volt line on pin 3 of module M30 and set
+18 V ADJ .
on power supply
to produce
+18 .00 V .
�
(See
Figures 5-5
and 5-6) .
TABLE 5-1 .
RECOMMENDED TEST EQUIPMENT
CRITICAL REQUIREMENT
The Power
Supply board
is reinstalled
by reversing the removal procedure .
(ground)
side of C10 is connected
to the instrument chassis ground,
and
to the positive (ground)
side
of C9 (jumper wires are sufficient)
5 .3 .3
+7 .3 Volt Check
RECOMMENDED
Keithley 179
MAINTENANCE
5 .3 .2
-18 Volt Adjustment
-
Connect digital voltmeter to yellow -18
volt line on pin 4 of module M30 and set
-18 V ADJ on power supply for -18 .00 h .
Connect digital voltmeter to green +7 .3
volt line on pin 2 of module M30 .
The
reading must be +7 .3 V ±100 mV .
5 .3 .4
Crystal-Frequency Adjustment
Module M30
Connect frequency counter having 50 ohm
input to the Model 3000 RF OUT connector .
Set
the signal
generator
FREQUENCY
switches to a
high frequency which
is
within
the
counter's range s
such
as
500 .000 MHz .
�
Set front panel controls
as follows :
�
MODE to CW, FREQ
to EXT,
AM/FM Vernier at minimum, OUTPUT dial at
+10 dBm and
VERNIER Maximum clockwise .
5- 3
Oscilloscope
DC and AC coupled
Tektronix 5400
At least 50 mV/cm sensitivity
High frequency - at least
10 MHz
Power Meter
10-520 MHz Frequency Range
HP Model 435A with
-10 dBm to +15 dBm Power Range
Model 8481A Power
Sensor
Frequency Counter
HP Model 5303B
Spectrum Analyzer
HP Model 8558B
Adj us t M30 FREQUENCY ADJUST trimmer
(Fig-
ure 5-5) for minimum frequency indication
on counter ;
then, carefully turn
FRE-
QUENCY ADJUST
trimmer clockwise
until
counter indicates the frequency select-
ed by
FREQUENCY switches .
Disconnect
counter from RF OUT connector .
A final
frequency
check
will
be
covered
in
paragraph 5 .3 .11 .
5 .3 .5
PHASE-LOCKED LOOP #1 ADJUSTMENT
M31A
No adjustment of module M31A is necessary .
5 .3 .6
PHASE-LOCKED LOOP #2 ADJUSTMENT
M32A
See Figure 5-5 for location of M32A test
points
and Figure 5-6
for
adjustment
controls .
Set
frequency to 200 .000 MHz
and other
front-panel
controls as
in
Section 5 .3 .4 .
�
Connect digital
volt
meter to M32A pin 14,
and
�
carefully ad-
just
�
both
�
M30 -1 trimmers
�
(A and
B) to
produce a minimum reading on voltmeter .
This
voltage should be between
+0 .5 V
and +3 .0 VDC .
Set frequency to. 239 .000
MHz,and note that
voltmeter reading is
still within above limits .
Set frequency
to 200 .000 MHz and
con-
nect scope vertical
input
(DC,
1 V/cm)
to M32A pin 15 .
Adjust M32A control (A)
for a 0 V scope
indication .
Set
Fre-
queney to 239 .000
MHz,
and adjust M32A
control (B) to again produce a 0 V scope
indication .
5 .3 .7
Phase-Locked Loop #3 Adjustment
P .L .L .
#3 consists of two modules :
The
M33 and the M9W .
The test point is on
module M33
(Figure 5-5), while the
ad-
justment
controls
are
on
module M9W
(Figure 5-6) .
�
Set FREQUENCY to 250 MHz,
and
�
other front panel
controls as in
Section 5 .3 .4 .
�
Connect scope vertical
input
(DC,
�
1 V/cm) to M33 pin 5 .
�
Adjust
M9W control
(D)
for a 0 V scope indica-
tion .
Set
front-panel
controls
as follows :
MODE to FMx100, FREQ to
1 kHz and AM/FM
Vernier at maximum .
Set scope vertical
input
(on M33 pin 5)
for AC,
50 mV/cm .
Adjust M9W control
(C) for minimum
(null)
indication of
1 kHz sine wave on scope .
Set FREQ to 400 Hz and note that
scope
presentation
is
a 400 Hz
sine
wave .
5 .3 .8
Phase-Locked Loop #4 Adjustment
Calibration of P .L .L . #4 involves three
modules :
M172,
M9W and
the M34 .
Test
points are
located on modules- M2M and
M34
(Figure 5-5), while adjustment con-
trols
are located on
modules M172 and
M9W (Figures 5-4 and 5-6) .
Set FREQUENCY switches for 250 .000
MHz
and other
front
panel controls
as in
Section 5 .3 .4 .
�
Connect digital
volt
meter to M172 pin °).;
�
then,
�
adj ust M172
250 MHz control
(Figure 5-4)
for a 0 .00
V reading on voltmeter .
�
The voltmeter
may now be disconnected .
Connect frequency counter to RF OUT con-
nector and connect scope vertical input
(DC,
1 V/cm)
to M34 pin 8 .
�
Adjust M9W
control (A) for 0 V on scope .
�
The count-
er should
indicate a frequency of
250
MHz .
�
NOTE :
�
Due to the way the M34 locks
on harmonics
of 40 MHz, it is possible
to adjust M9W control
(A) for
"0 V" at
multiples of 40 MHz offset from 250 MHz .
If this happens, it will be necessary to
readjust M9W control
(A)
several turns
to
break lock
and relock
at the next
multiple of
40 MHz until "0 V" can
be
obtained with a 250 MHz counter reading .
Set FREQUENCY switches
for 300 MHz and
adjust M172 300 MHz pot . for OV on scope
and a counter reading of 300 MHz .
Repeat
this step, using applicable M172 pots .,
for frequencies of 350,
400 and 450 MHz .
Refer to Figure 5-4 for M172 pot .
loca-
tions .
Set FREQUENCY switches to 500 MHz .
Ad-
just M172 500 MHz pot .
for
a scope read-
ing near
0 V .
Increase FREQUENCY
to
520 MHz and note scope indication ;
then,
adjust 500 MHz pot .
t o give scope indi
cations
at 500 and 520 MHz
that
�
are
symmetrical about 0 V .
Recheck 450 MHz
and
adjust
450 MHz pot .
�
for
0 V
on
scope .
Recheck 500 and 520 MHz ; adjust
500 MHz pot . a s indicated above .
Set FREQUENCY to 100 MHz and adjust M172
100 MHz.pot .
�
for
0 V
on scope
and
a
v
,
�
1~,.~..
�
o . d V
�
JC.
�
,A
�
.
�
.
�
1st h i '>
3a
~4 2 14
�
~J1
�
0,00
0
0
o
�
r
�
O 0
�
°
�
000
0000
8
00000
Figure 5-4 .
M172 Controls
-0,q
�
_2.0
-4.
�
U�
ioa 5~
G.~',m~r1
~:1
MAINTENANCE
counter
reading
of
100 MHz .
�
Repeat
using appropriate M172 pots .,for 50 MHz
and 0 MHz .
Repeat this step
until 0 V
is obtained on
scope at 100, 50
and 0
MHz .
Connect digital voltmeter to M34 pin
14 .
Step through frequency range from 1 MHz
to 520 MHz in 10 MHz steps to find fre-
quency having highest leveler
voltage ;
then
adjust M9W
control
(B)
for +1 .0
VDC at this frequency setting .
5 .3 .9
AM/FM Vernier Voltage Adjustment
C316
NOTE ;
�
The Modulation Board
(C316)
contains a SIZE ADJ pot .
(C)
and a BAL-
ANCE ADJ pot .
(D)
which
are
factory
adjustments .
�
DO NOT change setting of
these two controls .
Connect digital voltmeter
to
�
chassis
MOD T .P .
�
Set FREQ switch to VERNIER and
AM/FM Vernier control to maximum .
�
Refer
to Figure 5-6 for control
location and
adjust modulation board pot .
(A)
for
a
+5 .00 V reading on voltmeter .
�
Set AM/FM
Vernier
to 0% AM ;
the voltmeter should
indicate 0 V ±20 mV .
5 .3 .10
Meter Board Calibration - C315
To
adjust OUTPUT meter,
the unit must
rest on its bottom surface
(normal op-
erating position)
.
Momentarily turn OFF
power to instrument
and
mechanically
zero OUTPUT meter with front-panel zero
adjust screw .
The meter
needle should
bisect dot at left end of meter
scale .
Restore power to instrument and allow it
to stabilize .
Set front panel VERNIER fully ccw ; then,
adjust Meter Board pot .
(B)
until meter
needle again bisects dot at left end
of
meter scale .
�
See Figure 5-6 for location
of Meter Board pots .
�
Set VERNIER com-
pletely cw and adjust
Meter Board pot .
(A)
for a +3 dBm
OUTPUT meter reading .
Set
front panel
controls as
follows :
FREQUENCY
switches to 50 .000 MHz, MODE
to CW, VERNIER completely cw and OUTPUT
dial to +10 dBm .
Calibrate power meter
and its thermistor or power sensor .
Set
power meter to the
+15 dBm range ;
then
connect
thermistor or sensor
to RF OUT
connector of Model 3000 .
Adjust
Meter Board pot .
(F)
for
a
+13
dBm power
meter
reading .
Set
front
panel VERNIER for -7 dBm reading on OUT-
PUT meter and set power meter to the +5
dBm range .
Adjust Meter Board pot .
(E)
for +3 dBm power meter reading .
�
Again
set power meter to the +15 dBm range and
turn front panel VERNIER fully cw .
Re-
peat this
paragraph until +13
dBm and
+3 dBm power meter readings are obtained
without further adjustment of Meter Board
pots .
(E) and
(F) .
5-6
Set OUTPUT dial to 0 dBm and power meter
to the +5 dBm range .
With VERNIER com-
pletely cw,
adjust Meter Board pot .
(C)
for a +3 dBm power meter reading .
Turn
VERNIER for -6 dBm
reading
on
OUTPUT
meter and set power meter to the
-5 dBm
range .
Adjust Meter Board pot .
(D)
for
-6 dBm power meter reading .
Repeat this
paragraph until +3 dBm and
-6 dBm power
meter readings are obtained without fur-
ther adjustment of Meter Board pots .
(C)
and
(D) .
Set Model 3000 front
panel controls as
follows :
FREQUENCY switches to 520 .000
MHz, MODE to AM, FREQ to VERNIER, AM/FM
Vernier control to OI AM and OUTPUT dial
to
0 dBm .
Set power meter to the 0 dBm
range
and adjust
front
panel VERNIER
for a
-3 dBm
reading on
power meter .
Set power meter to the +5 dBm range and
adjust AM/FM Vernier to 1001 AM .
Adjust
Meter Board pot .
(G) for +3 dBm reading
on power meter .
5 .3 .11
Final Frequency Check - M30
Connect frequency counter to signal gen-
erator and set front
panel controls as
specified in Section
5 .3 .4 .
Note fre-
quency reading
on counter ;
if it does
not agree
with the
selected FREQUENCY
within
accuracy specifications,
�
very
carefully
adjust M30
FREQUENCY ADJUST
trimmer
(See Figure 5-5) until
desired
frequency is obtained .
5 .3 .12
FM Reference Adjustment - M29-1
See Figure 5-6 for location of M29-1 ad-
justments .
Connect frequency counter to
front panel RF OUT connector ;
then set
other front
panel controls as follows :
FREQUENCY to 40 .000 MHz,
�
MODE to
CW,
FREQ to VERNIER, AM/FM Vernier at mini-
mum,
VERNIER fully cw and OUTPUT
dial
at +10 dBm .
�
Record
the CW
frequency
shown on frequency counter .
1(P/ V
~~
�
Clkt~1
Set MODE to FMxl_ and adjust M29-1 control
(B)
to produce an output frequency that
is
approximately
100 Hz
above the
CW
frequency .
Increase AM/FM
Vernier to
maximum and adjust Modulation Board con-
trol
(B)
to
increase frequency counter
reading by 5 kHz .
Set MODE to FMx100 and AM/FM Vernier to
maximum .
Adjust
M29-1 control (A)_°or a
frequency counter reading of 40 .500 MHz
±10 kHz .
Troubleshooting
is
generally a system-
atic procedure of "divide and conquer" .
A thorough understanding
of the
block
diagrams and-circuit description located
in Section 3 of this manual will enable
the trouble
symptom to be localized to
a particular module or PC board .
Once
this has
been accomplished the
module
or board
can be replaced,
or repaired
with the
aid of the proper
schematic .
In general,
it is preferable to replace
the module or PC-board assembly .
The front-panel ACCURACY lamps together
with
the four internal
module "unlock
indicator" lamps aid in troubleshooting
phase-locked loop problems .
One module
in each loop contains an indicator lamp
which lights to indicate when that loop
is unlocked .
The lamps indicate
only
which loops are unlocked,
but not which
module is at fault .
A
problem in a power supply
may cause
many symptoms
pointing to other
areas
and
should be checked when the symptom
does
not clearly
indicate a
specific
problem.
The loss of the -18 V supply,
for example,
will cause
the
ACCURACY
lamp to flash ;
while loss of the +18 V
supply will extinguish all lamps .
The
+18,
-18 and +7 .3
V supplies
comprise
the DPS2
power supply which
forms the
rear panel of the instrument .
�
Perfor-
mance of these supplies is indicated in
the CALIBRATION PROCEDURE .
For troubleshooting purposes, it is per-
missible to operate the Model 3000 with
any of the plug-in modules or RF cables
removed ; however,
the instrument should
be turned off when removing or installing
modules .
If
substitute modules
are
available, possibly from another
Model
3000,
this provides
an easy method of
verifying if a suspected
module is de-
fective .
RF cables
can be disconnected from the
module output connectors ;
then a power
meter or spectrum
analyzer can be con-
nected directly
to the module connector
for power level or frequency measurements .
Fabrication
of a
short coax
adapter
cable,
terminated in a mating connector
for
the modules on
one
end and a BNC
connector on the other, will facilitate
connection of test equipment .
Before engaging in a troubleshooting pro-
cedure,be sure front-panel controls are
set in proper operating position .
Make
a thorough visual inspection of the in-
strument
for such
obvious
defects as
loose or missing screws,
broken wires,
defective module-pin sockets,
loose RF
cables and burned or broken components .
5 .4 .1
Troubleshooting Hints
MAINTENANCE
The following is a list of several typi-
cal symptoms
followed by the
probable
cause(s) or a troubleshooting procedure .
It is assumed
the
instrument has been
properly calibrated previously, and that
a
warmup period will precede
trouble-
shooting .
INTERMITTENT OPERATION - Defective mod-
ule-pin sockets or loose RF cables .
LOW RF OUTPUT
(+10 dBm RANGE)
- If power
is 10 dB
low on this range but is cor-
rect on
the
0 dBm range,
Meter Board
micro switch
S1 is probably
not being
actuated by attenuator shaft .
LOW OR NO RF OUTPUT
(ANY RANGE)
- Defec-
tive attenuator or RF cables connecting
to input or output of attenuator, defec-
tive meter board, defective module MIOW
or M9W .
�
Check voltage on pin 15 of mod
ule MlOW .
�
The voltage should be approx-
5- 7
imately as follows :
-2 .5 VDC on +10 dBm
range with VERNIER fully clockwise; -0 .7
VbC on 0 dBm range
with VERNIER
fully
clockwise .
These
voltages
indicate
proper operation
of the
meter
board ;
while other values,
particularly posi-
tive voltages,
indicate a
defective IC
on
�
the meter
board .
�
Next, check RF
power directly
at 1110W output .
�
If it
is correct,
the
trouble
lies in
the
attenuator or its RF cables .
If module
M10W output
is
low, measure
RF
level
directly at
module M9W
output -
this
should be approximately -10 to -11 dBm .
If this level
is correct, module
M10W
is defective ; while if the level is low,
Sweep Oscillator M9W is defective .
OUTPUT METER
DOES NOT MOVE - If
meter
is pegged at
either end of scale,
the
trouble is probably a defective
meter-
driver
IC on meter board
(C315) .
If
meter remains at mechanical zero, meter
movement
may be open or a
meter-board
IC is defective .
UNLEVELED LAMP ON - RF OUT connector not
terminated in 50-ohm load, AM percentage
set so that
peak of
modulated
output
exceeds +13 dBm, defective module M10W,
defective attenuator
or connecting
RF
cables .
Connect
power meter
directly to
M10W
output .
Set OUTPUT
dial and
VERNIER
for a +13 dBm reading on power meter at
50 .000 MHz .
�
Step through frequency range
from 10 to 520 MHz in 10 MHz-steps .
�
A
power meter reading of
+13 dBm ±0 .5 dB
with UNLEVELED lamp OFF indicates proper
operation of module M10W .
�
Connect power
meter directly to attenuator output and
repeat above steps .
�
If attenuator output
is correct,
trouble
is due
to a defec-
tive RF cable or possibly a poor ground
connection at RF OUT connector .
If out-
put is correct at MlOW but the UNLEVELED
lamp is ON,
the trouble is
probably a
defective lamp-driver circuit in module
M10W .
ACCURACY LAMPS
FLASH
CONTINUOUSLY - A
steady
light in
CW mode but
flashing
lights in FM modes indicate a defective
M29-1 or M33 module .
�
If ACCURACY lamps
flash in all modes, one or
more of the
phase-locked loops is open ;
see PHASE
LOCKED LOOP TROUBLES below .
NOTE :
�
Above
the normal frequency range of the instru-
ment (in the vicinity of 560 MHz), it is
normal for phase-locked
loop #4 to un-
lock causing the lamps to flash .
PHASE-LOCKED LOOP TROUBLES - An open or
unlocked loop,
indicated by a
lighted
module lamp,
can be caused by a number
of factors, including:
low AC-input vol-
tage, low DC-supply voltages,
improper
phase-locked loop DC voltages,
an open
or shorted RF cable or a defective mod-
ule .
A defective RF cable or module can have
a
chain-reaction
effect that
�
causes
two or more loops to unlock .
�
For example,
loss of the 1 kHz signal to
module M31
will cause PLL #1 to unlock ; thus, module
M31 may not supply
a proper signal
to
module M34, causing
PLL #4 to
unlock .
Failure of the 40 MHz crystal oscillator
in module M30 will cause all four loops
to unlock, since all six reference fre-
quencies will be lost .
Table 5-2 lists typical RF signal-input
levels
for
each of
the
phase-locked
loops .
Those signals having a TTL level
or 1 V level may be measured with a high-
frequency oscilloscope ; the other signals
are best measured with a spectrum analy-
zer .
NOTE :
The TTL
waveform shown in
Table 5-2 is for illustration of voltage
values only, and
does not
necessarily
represent the observed waveshape .
Phase-Locked Loop#1 - Unlocking of this
loop maybe caused by a defective module
M31, module M30 or RF
cable connecting
M30 to M31 .
If M31A unlock indicator is on, check 1
kHz signal as
listed in Table 5-2 .
If
1 kHz signal is correct, module M30
�
is
operating properly,
then
�
check RF cable
between M30
�
and M31A. If proper
1 kHz
signal is being applied
to M31A,
check
for
7 .3 V on pin 6, +18 V on pin 7,
and
-18 V on pin 8 of M31A, If input signal
and DC voltages are correct, module M31A
is defective .
Phase-Locked Loop #2 - Unlocking of loop
#2 can
be caused by
defective modules
M172, M30, M32 or RF cables
connecting
M30 to M32 .
Connect digital voltmeter to M32 pin
11
and observe
voltmeter
reading
while
stepping through
frequency range
from
200 to 239 MHz
in
1
MHz steps .
�
The
voltmeter reading should
change -0 .2 V
per MHz from 0 V at 200 MHz to -7 .8 V at
239 MHz .
�
These voltages indicate proper
operation of module M172 .
Module M30 can be checked by
measuring
the 1 MHz and 1440 MHz signals directly
at
the M30 .
The levels
specified in
Table 5-2 indicate
proper operation of
module M30 .
�
If the M30 outputs are cor-
rect,
the trouble lies in module M32 or
the RF cables .
Phase-Locked Loop #3 - Unlocking of this
loop
in CW mode
can be caused
by de-
fective modules
M9W, M30, M33
or con-
necting RF cables .
In addition, unlock-
ing in FM modes can be
caused by a de-
fective module M29-1 .
The M9W can
be
checked by
�
measuring
the 1198
MHz narrow oscillator
signal
directly at module M9W .
The level spe-
cified in
Table 5-2
indicates
proper
operation of the M9W .
Measure the
1200 MHz
(120 comb)
and
2
MHz signals directly at module M30.
Pro-
per operation of the M30 is indicated by
the signal levels specified in Table 5-2 .
Set MODE switch to FMxl, FREQ at VERNIER
and AM/FM Vernier at maximum .
Measure
1 .5 to 2 .5 MHz signal
(exact frequency
is dependent upon setting of AM/FM Ver-
nier)
directly at module M29-1 .
If signal
level is
as
specified in Table
5-7.
s
proper operation of module M29-1 is indi-
cated .
MAINTENANCE
If
input signals to module M33 from mod-
ules M9W, M30 and M29-1 are correct, the
trouble
is in module M33 or its connect-
ing RF cables .
Phase-Locked Loop #4 - Unlocking of loop
#4 may,
under certain
conditions,
be
caused by
problems originating
in the
other loops .
Therefore,
loops#l, 2 :and
3 should
be operating properly
before
troubleshooting loop #4 .
Unlocking of
�
loop #4 can be
�
caused by
defective
modules M172, M9W, M30, M31,
M32, M34 or connecting RF cables .
Connect digital voltmeter to M172 pin
1 .
The voltmeter
reading should be 0 .00 V
with FREQUENCY switches set at 000 MHz,
-2 .5 V at 250 MHz and -5 .0 V at 500 MHz .
These voltages indicate proper operation
of module M22 .
�
Connect voltmeter to M2M
pin 8 .
�
The voltmeter reading should be
+6 to +7 V at 000 MHz,
0 V at 250
MHz
and -8 V at 500 MHz .
If these voltages
are obtained, module M172 is
operating
properly .
Measure the
Wide Oscillator
signal at
module M9W .
The frequency will be be-
tween 1198 MHz and 1718 MHz,
depending
upon the setting of the FREQUENCY switch
es .
�
If the signal level is as specified
in Table 5-2,
module M9W is
operating
correctly .
Measure the 40 comb line at module M30 .
The 40 MHz harmonics from 40 MHz to 280
MHz should be fairly equal in amplitude
and the level should be as specified in
Table 5-2 .
This level indicates proper
operation of the M30 module .
Measure the 1448 MHz to 1487 MHz signal
at module M32 .
The exact frequency is
dependent upon
the setting of the
MHz
FREQUENCY switches .
If the level is as
specified in Table 5-2,
the M32 is op-
erating properly .
Last,
measure the
10 MHz
to
9 .001
MHz
output
of the M31 module .
�
The output
5-9
will be 10 .000 MHz with the kHz FREQUENCY
switches set to 000 kHz, and the frequency
will decrease to 9 .001 MHz with the kHz
switches set to 999 kHz .
If the signal
level is
as specified in
Table 5-2,
module M31 is operating properly .
If output
of each of the above modules
is correct,
module M34 or an
RF cable
TTL LOGIC LEVEL
is defective .
�
A further check of
the
M34 can be made by monitoring M34 pin 8
with a digital voltmeter while stepping
through the frequency range from 10 MHz
to 520 MHz in 10 MHz steps .
�
The volt-
meter reading should be 0 t3 V ; however,
a defective M34 may give a voltage read-
ing of 12 to
16 volts .
2 V P-P
Min .
PHASE-LOCKED
LOOP
MODULE
TABLE 5-2 .
MODULE SIGNAL
INPUT-SIGNAL
FREQUENCY -
LEVELS
INPUT-SIGNAL
LEVEL
SIG . MEASURED
AT
1
M31
1 kHz
TTL
M30 (W13)
2
M32
1 MHz
TTL
M30 (W12)
1440 MHz
-12
to -15 dBm
M30
(W9)
3
M33
1198 MHz
-10 dBm ±3 dB
M9W (W5)
1200 MHz
(120 comb)
-15 dBm ±5 dB
M30
(Win)
1 .5 to 2 .5 MHz
1 volt p-p
M29-1(W7)
2 MHz
TTL
M30 (W11)
4
M34
1198 to 1718 MHz
-10 dBm ±5 dB
M9W (W4)
1448 to 1487 MHz
-2 dBm ±3 dB
M32 (W8)
40 to 280 MHz
(40 comb)
-10 dBm ±3 dB
M30
(W6)
10 to 9 .001 MHz
TTL
M31
(W14)
BCD FREQUENCY SWITCHES - Troubles in the
BCD switch
circuits may be caused by a
defective
switch, loose or
disengaged
switch connector or a broken switch wire .
Five of .the switches utilize four wires
plus a ground to
select decimal digits
from 0 through 9 .
The 100's MHz switch
uses three
wires plus ground, since it
only needs to select digits between 0 and
5 .
A "BCD Truth Table",
applicable to
each of
the silk switches,
is given
in
Table 5-3 .
Suspected switch problems can be checked
by referring to Table 5-3
and the Model
3000 Wiring Diagram to determine
which
module pins are grounded for a particular
frequency .
For example,
to
select
a
frequency of 200 .500 MHz, M172 pin 3 is
grounded by
selecting
digit 2 on
the
100's MHz switch,
and M31 pins 2 and 4
are grounded by
digit
5
on the
100's
kHz switch .
NOTE :
0
Wire Grounded by Switch .
Wire NOT Grounded .
MODULATION
TROUBLES -
The
Modulation
Board
(C316)
�
is the most common
cause
of modulation
problems,
�
particularly
when the
modulating
signal
is
lost .
Non-linear amplitude
�
modulation,
at
higher-audio frequencies from an exter-
nal source,
may be caused by the
M10W
output amplifier .
MAINTENANCE
The presence of
the. modulating
signal
can be determined as follows :
Set MODE
switch to AM, FREQ to 400 Hz, AM/FM Ver-
nier to 100% and OUTPUT to +3 dBm .
Con-
nect oscilloscope vertical input to MOD .
T .P .
�
The scope
should display a 10 V
peak-to-peak sine wave
at a
frequency
of 400 Hz
�
(period
of 2 .5 ms) .
�
Set
FREQ switch
to
1 kHz
-
scope display
should be a
10 V p-p sine
wave at
�
a
frequency of
1 kHz
(period of
1 ms) .
Failure to
obtain the 400 Hz or
1 kHz
signals indicates a defective Modulation
Board .
Connect scope
vertical input to module
M10W pin 15 .
The scope
indication
should be a
1 kHz
sine wave
with
an
amplitude of approximately
- 1 .75 V p-p .
Set FREQ
switch to 400 Hz .
�
The scope
should display a 400 Hz sine wave having
a p-p value
of
approximately
1 .75 V .
Failure to
obtain the 400 Hz
or
1 kHz
signals at this point
may be due
to
a
defective MODE switch on the Modulation
Board, or a broken wire between
the Mod-
ulation Board and the Meter Board .
Connect scope
vertical input to module
M29-1 pin 16, and set MODE switch to FMxl
or FMx100 .
The scope display should be
a 400 Hz sine
wave having
a p-p value
of 10 V .
Set FREQ switch to 1 kHz .
The
scope indication should be
a
1 kHz sine
wave
with
an
amplitude of
10 V p-p .
Failure to
obtain the 400 Hz
or
1 kHz
signals may be due to
a defective MODE
switch,
or a
broken
wire
between
the
Modulation Board and module M29-1 .
5 .4 .2
Module Replacement
While in many cases the Model 3000 will
work satisfactorily after simply replac-
ing a defective module,
to maintain the
high
accuracy of which the unit is cap-
able, module replacement should be fol-
lowed by
calibration of
the
affected
circuits .
Table 5-4 lists each module
and the adjustments needed .
The M172,
M9W and
M10W
modules may be
replaced
individually,
however,
it
is
recommended that these three modules be
5- 11
TABLE 5-3 .
BCD FREQUENCY SWITCHES
Decimal
BCD Wires
Digit
8 4 2
1
0
- - - -
1
- - - 0
2
- - 0 -
3
- - 0 0
4
- 0 - -
5
- 0 - 0
6
- 0 0 -
7
- 0 0 0
8
0 - - -
9
0 - - 0
replaced as a matched set .
If replace-
ment of the M30 or M32 becomes necessary,
it is recommended that these two modules
be replaced as a matched set also .
M9W Sweep Oscillator
M10W Output Amplifier
M172 Sweep Drive/DAC
M29-1 FM Reference
M30 Crystal Reference
M31 kHz Steps
M32 MHz Steps
M33 Narrow Osc . Lock
M34 Wide Osc . Lock
C315 Meter Board
C316 Modulation Board
DPS2 Power Supply
TABLE 5-4 .
�
REPLACEMENT MODULE CALIBRATION
ADJUSTMENT REQUIRED
(See appropriate paragraphs in Calibration Procedure)
Reset Phase-Locked Loops #3 and #4
Recalibrate Meter Board (C315)
Reset Phase-Locked
Loop #4
Reset FM Reference Adjustments - M29-1
Set Crystal-Frequency Adjustment and Final Freq . Check
None required
(4,
tL -~
',3
'Sic ~a2
Adjust Phase-Locked Loop #2
Adjust Phase-Locked Loop #3
Set M34 Leveler Voltage (pin 14) for +1 .0 VDC .
�
SEE PLL #4
Adjust Meter Board Calibration
Set AM/FM Vernier Voltage, and FM Reference Adj .
Adjust +18 V and check +7 .3 V
02PLL 2 TP
03 PLL 3
T P
®PLL 4
T P
Figure 5-5 .
Test Points, Chassis Bottom View
Qs MODULATION
�
T P
(s
�
250 MHz TP
© LEVELER
TP
WIRE COLOR CODE
GREEN +7.3V
ORANGE +18V
YELLOW
-18V
(OTHERS
UNASSIGNED)
MAINTENANCE
5-13
(1) DPS2A POWER SUPPLY
A- +18VADJ
B - -18 V ADJ
C - FUSE 2 AT
(2) NOT USED
(3) M37 AUX RF OUT (OPT 4)
(4) NOT USED
(5) NOT USED
(6) M30 XTAL REF
A-1440 MHZ ADJ
B-1440 MHZ ADJ
C-10 MHZTP
(7) M34 WIDE OSC LOCK
A-RFTP
B - UNLOCK INDICATOR
(8) M9W SWEEP OSC
A - WIDE OSC CENT ADJ
B - WIDE OSC LEV ADJ
C - NARROW OSC SW ADJ
D - NARROW OSC LEV ADJ
(9) M10W-9 OUTPUT AMP
(10) M31A KHZ STEPS
A-UNLOCK INDICATOR
(11) M172 SWEEP DRIVE/DAC
(12) M32A MHZ STEPS
A - 000 MHZ ADJ
B - 039 MHZ ADJ
C - UNLOCK INDICATOR
(13) M33 NARROW OSC LOCK
A-RFTP
B - UNLOCK INDICATOR
(14) M29-2 FM REF
A - 2 .5 MHZ ADJ
B - 2 MHZ ADJ
(15) M35-1 RF CKT BKR (OPT 3)
(16) 50130-01 STEP ATTEN
(17) C316 MOD BOARD
A- +5VADJ
B-FMx1 ADJ
C - SIZE ADJ
D-BALADJ
(18) C315 METER BD
A - METER CAL ADJ
B - METER BAL ADJ
C - LEVEL 0 DBM RANGE +3 ADJ
D - LEVEL 0 DBM RANGE -7 ADJ
E - LEVEL +10 DBM RANGE +3 ADJ
F - LEVEL +10 DBM RANGE +13 ADJ
G - % MOD ADJ
Figure 5-6 .
Model
3000 Top View
MAINTENANCE
II
BO
(2)
(3)
i~
(4)
~I
i- ®e ®
~~(A)
-- ~~
~(9)
il
c
.~
o0
I
3
I
II I
II
3
/ :
Ds
Ll
5
3
I
.
®
I
(16)I
(10)
(11)
(12)
(14)
1
(15)
©A
.
®B
II
OBE
1. � ,~ .
I
rU Oc
I
I
'clD
p7) (18)
_
:3
L
®~a
I
0
(D
IIII~III
6 .1 INTRODUCTION
This section contains lists of all replaceable parts for the instrument .
For an assembly containing one or more subassemblies,
the assembly list
appears first, and is followed by the subassembly list .
The lists appear in the following order .
6 .2
MANUFACTURERS CODE
PARTS LIST
�
ASSEMBLY
1010-00-0013
�
3000
SECTION6
REPLACEABLE PARTS
1219-00-0016
�
HARNESS - 3000
1212-00-0006
�
POWER SWITCH
1110-00-0294
�
C315
1110-00-0751
�
C316
1115-00-0011
�
DPS2A
1218-00-0250
�
PC - DPS2A
1218-00-0144
�
LINE CORD - DPS2A
1114-00-0020
�
M9W
1219-00-0055
�
MIXER - M9W
1219-00-0054
�
PRE AMP - M9W
1114-00-0360
�
M10W-9
1218-00-0600
�
AMPLIFIER - M10W-9
1218-00-0610
�
LEVELER - MIOW-9
1114-00-0016
�
M29-2
1114-00-0012
�
M30
1218-00-0192
�
PC - M30
1114-00-0143
�
M31A
1114-00-0215
�
M32A
1218-00-0022
�
DIG PGM BD - M32A
1218-00-0021
�
OSC CTL BD - M32A
1219-00-0117
�
MIXER - M32A
1219-00-0118
�
VIDEO AMP - M32A
1114-00-0011
�
M33
1114-00-0008
�
M34
1219-00-0129
�
MIXER/AMP - M34
1219-00-0019
�
VIDEO AMP - M34
1218-00-0314
�
LEVELER - M34
1218-00-0334
�
PHASE LOCK - M34
1219-00-0020
�
VIDEO MIXER - M34
1114-00-0320
�
M172
The following code is used on the parts lists to identify the manufacturer .
ABBRV NAME . . . . . . . . . . .
. . .
. . . . . . . . . . .
.
CITY . . . . . . . . . . . . . . . . .
ST
A-B
ALLEN-BRADLEY
MILWAUKEE
WI
A-D
ANALOG DEVICES
CAMBRIDGE
MA
A-H
ARROW HART,
INC .
KETTERING
OH
A-I
ALAN
INDUSTRIES
COLUMBUS
IN
A-M
AMERICAN MAGNETICS
CARTERVILLE
IL
A-P
AMERICAN PLASTICRAFT CO .
CHICAGO
IL
ASAC
ABACUS PACKAGING CO .
CHICAGO
IL
ACEIN ACE INDUSTRIAL HDWR .
CAMDEN
NJ
ACI
ADVANCE COMPONENTS,
INC .
CENTERBROOK
CT
AEG-T AEG-TELEFUREN CORP .
SOMERVILLE
NJ
AER
AVX CERAMICS
MYRTLE BEACH
SC
AERTK AERTECH INDUSTRIES
SUNNYVALE
CA
AHAM
AHAM COMPANY
AZUSA
CA
AIN
ALPHA INDUSTRIES,
INC .
NO`RTHNANDOVER
ALC
ALCO ELECTRONICS PRODUCTS
ME
ALLPL ALL PLASTICS,
INC .
INDIANAPOLIS
IN
AMD
ADVANCED MICRO DEVICES INC .
SUNNYVALE
CA
AMELC AMERICAN ELECTRIC
CORDSETS
BENSENVILLE
IL
AMP
AMP,
INC .
HARRISBURG
PA
ANZAC ADAMS-RUSSELL,ANZAC DIV
BURLINGTON
MA
APL
AMPHENOL CONNECTOR SYSTEMS
BROADVIEW
IL
APP
A-P PRODUCTS
PAINESVILLE
OH
APX
AMPEREX ELECTRONIC
CORP .
SLATERSVILLE
RI
ARC
ARCO ELECTRIC PRODUCTS
SHELBYVILLE
IN
ARN
ARNOLD ENGINEERING CO .
MARENGO
IL
ARW-M ARROW-M CORP .
CARSON
CA
ASC
ASSOCIATED SPRING
BRISTOL
CT
ASE
AIRCO SPEER ELECTRONICS
ST .
MARYS
PA
ASTIR ASTRO INDUSTRIES
DAYTON
OH
AT/IN ATLANTIC
INDIA RUBBER COMPANY
CHICAGO
IL
ATC
AMERICAN TECHNICAL CERAMICS
HUNTINGTON STATION
NY
ATR
ATR COIL CO.
BLOOMINGTON
IN
AUGAT AUGAT,
INC .
ATTLEBORO
MA
AULT
AULT INC .
MINNEAPOLIS
MN
AUTCP AUTOMATION CORP .
PECKVILLE
PA
AVDEL AVDEL FASTENER SYS .
PARSIPPANY
NJ
AVT
AVANTEK,
INC .
SANTA CLARA
CA
AWC
ALPHA WIRE
ELIZABETH
NJ
B-T
BEK-TEK,
INC .
READING
PA
BEARI
BEARINGS,
INC .
CLEVELAND
OH
BEK
BECKMAN INSTRUMENTS,
INC .
FULLERTON
CA
BEL
BELDEN CORP .
GENEVA
IL
BER
BERG ELECTRONICS
NEW CUMBERLAND
PA
BGH
BEECH GROVE HARDWARE
BEECH GROVE
IN
BORDN BORDEN INC .
COLUMBUS
OH
BOLE
BOURNS,
INC .
RIVERSIDE
CA
BREZ
BREEZE CORPORATIONS,
INC .
UNION
NJ
BSCAN B-SCAN,
INC .
PHILADELPHIA
PA
BUCK
BUCKEYE STAMPING CO .
COLUMBUS
OH
BUD
BUD RADIO,
INC .
WILLOUGHBY
OH
BURND BURNDY CORP .
NORWALK
CT
BUS
BUSSMAN MFG .
ST .
LOUIS
MO
BWC
BARON WIRE AND CABLE CORP .
NILES
IL
C-D
CORNELL DUBILIER ELECT .
DIV .
NEWARK
NJ
C-E
CLINTON ELECTRONICS
ROCKFORD
IL
C-H
CUTLER-HAMMER,
INC .
MILWAUKEE
WI
C-I
COMPONENTS,
INC .
BIDDEFORD
ME
C-J
TRW/CINCH
ELK GROVE VILLAGE
IL
C-K
C & K COMPONENTS,
INC .
WATERTOWN
MA
C-L
CENTRALAB DIV .
MILWAUKEE
WI
C M
C-M
C-W
C-W INDUSTRIES
WARMINSTER
PA
CAI
CUSTOM ACCESSORIES,
INC .
SKOKIE
IL
CAM
CAMBION
CAMBRIDGE
MA
CAR
CARLING ELECTRIC,
INC .
WEST HARTFORD
CT
CCM
CORCOM,
INC .
CHICAGO
IL
CDC
COMPONENT DEVELOPMENT CORP .
CARSON
CA
CECO
CENTRAL COIL CO.
BRAZIL
IN
CFI
CIRCUIT FUNCTIONS
INC .
NEWBURY PK
CA
CGW
CORNING GLASS WORKS
CORNING
NY
CHE
CHERRY ELECTRICAL PRODUCTS
WAUKEGAN
IL
CHEMP CHEMPLAST,INC .
WAYNE
NJ
CHLAR CHARLES LARSON CO .
STERLING
IL
CHOM
CHOMERICS INC .
WOBURN
MA
CHRY
CHRYSLER CORP .
DETROIT
MI
CIMCO CIMCO WIRE AND CABLE INC .
ALLENDALE
NJ
ABBRV NAME. . . . . . . . . . . . . . . . . . . . . . . . . .
CITY. . . . . . . . . . . . . . . . .
ST
CKI
CTS KNIGHTS,
INC .
MT .
VE
NY
CLA
CLAIREX CORP .
NON
CLAR
CLAROSTAT MFG .
C O
DOVER
NH
CLFRM COILFORM
GENEVA
IL
CLFX
COLE-FLEX CORP .
BABYLON
NY
CNCRD CONCORD FLEX
NEW YORK
NY
CPKG
CREATIVE PACKAGING DIV .
INDIANAPOLIS
IN
CPLRD COMPLETE READING
CRTR
CORE-TRONICS
ORANGE
NJ
CTS
CHICAGO TELEPHONE SYSTEMS
CHICAGO
IL
CTS-E CTS OF ELKHART
ELKHART
IN
CTS-F C .T .S.
OF FAIRBERRY
FAIRBERRY
IL
CTS-K CTS OF KEENE
PASO ROBLES
CA
CTSBR CTS OF BERNE
BERNE
IN
CTSBV CTS OF BROWNSVILLE
BROWNSVILLE
TX
CW/AL C .W ./ALPHA
SOUTHAMPTON
PA
DAL
DALE TECHNOLOGY CORP .
HARTSDALE
NY
DATEL DATEL SYSTEMS,
INC .
MANSFIELD
MA
DAV
HARRY DAVIES MOLDING CO.
CHICAGO
IL
DAYTN DAYTON ELECTRIC CO .
CHICAGO
IL
DEL
DELEVAN DIV .
EAST AURORA
NY
DEN
DENNISON MFG.
CO .
FRAMINGHAM
MA
DEW
DEWIRE FABRICATING CORP .
LOWELL
MA
DILEC DILECTRON
MONROVIA
CA
DIO
DIODES,
INC .
CHATSWORTH
CA
DK-WR DAKO-WARE
CHICAGO
IL
DLGHT DIALIGHT
BROOKLYN
NY
DNTCH DONTECH,
INC .
DRA
DRAKE MANUFACTURING CO.
HARWOOD HEIGHTS
IL
DRMYR DORMEYER
ROCKVILLE
IN
DYNR
DYNEER CORP .
CHATSWORTH
CA
E-C
ELECTRONIC CRYSTALS
KANSAS CITY
MO
E-I
ELECTRICAL INDUSTRIES,INC .
MURRAY HILL
NJ
E-M
ELECTRA/MIDLAND CORP.
MINERAL WELLS
TX
EBY
EBY COMPANY
PHILADELPHIA
PA
ECKDT ECKARDT LABORATORIES
ORANGE
CA
ECMC
ELECTRI-CORD MFG .
CO.
INC .
WESTFIELD
PA
ELC-I ELECTRA
CUMBERLAND
IN
ELCO
ELCO INDUSTRIES
ROCKFORD
IL
ELEXP ELECT EXPEDITERS
MILWAUKEE
WI
ELFX
ELECTRO-FLEX HEAT
INC .
BLOOMFIELD
CT
ELHDW ELECTRONIC HARD
FARMINGDALE
NY
ELNA
ELNA
CARSON
CA
EMRON
S
EPITK EPITEK ELECTRONICS
KANATA,
ONT.,
CAN .
##
EPOXT EPOXY TECHNOLOGY,
INC .
BILLERICA
MA
ETC
ELECTRONIC TRANSISTOR CORP .
FLUSHING
NY
ETY
ERIE TECHNOLOGICAL PRODUCTS
ERIE
PA
EVRDY EVEREADY
NEW YORK
NY
EXAR
EXAR INTEGRATED SYSTEMS
SUNNYVALE
CA
EZLOK E-Z LOK
GARDENIA
CA
F-K
THERMWELL PRODUCTS,
INC .
FRAMINGHAM
MA
F-S
FEDERAL SCREW
CHICAGO
IL
FAN
FANCOURT & CO.
GREENSBORO
NC
FASTX FASTER DIV.,
ILL.
TOOL WORKS
DES PLAINES
IL
FCD
FAIRCHILD
MOUNTAIN VIEW
CA
FNWL
FENWAL
FRAMINGHAM
MA
FRK
FRAKO
FRANKFORT,
GER .
FRTE
FAIR RITE PRODUCTS CORP .
WALLKILL
NY
FRXC
FERROXCUBE DIVISION
SAUGERTIES
NY
G-E
GENERAL ELECTRIC
INDIANAPOLIS
IN
G-H
GRAYHILL,
INC .
LA GRANGE
IL
G-I
GEN'L INSTRUMENT SEMICONDUCTOR HICKSVILLE
NY
G-T
GRAND TRANSFORMERS
GRAND HAVEN
MI
GAL
GALILEO ELECTRO-OPTICS
CARMEL
IN
GATES GATES ENERGY PROD .
DENVER
CO
GBN
GILBERT ENGINEERING CO.
INC .
PHOENIX
AZ
GCE
GC ELECTRONICS
ROCKFORD
IL
GHZ
GHZ DEVICES,
INC .
CHELMSFORD
MA
GLOBE GLOBE
MILWAUKEE
WI
GNATR GENERAL ATRONICS CORP .
PHILADELPHIA
PA
GOU
GOULD,
INC .
ST.
PAUL
MN
DRIES DRIES REPRODUCER
NEW ROCHELLE
NY
GRIP
GRIPMASTER CO .
MARLBORO
NJ
GRVCO
ROVE COMPANY
DAYTON;
OH
GUDL
GUDEBROD BROS .
SILK CO .
CHICAGO
IL
ABBRV NAME . .
. . . . . . . . . . . . . . . . . . . . . . . .
CITY . . . . . . . . . . . . . . . . .
ST
H-P
HEWLETT-PACKARD
INDIANAPOLIS
IN
HARTW HARTWELL CORP .
PLACENTIA
CA
HEL
HELIPOT
ANAHEIM
CA
HEY
HERMAN MFG .
CO.
WAUKESHA
WI
HHS
HERMAN H.
SMITH,
INC .
BROOKLYN
NY
HI-G
HI-G INC .
WINDSOR LOCKS
CT
HI-G
HI-G INC
WINDSOR LOCKS
CT
HIT
HITACHI AMERICA,
LTD.
SAN FRANCISCO
CA
HMLN
HAML I N
LAKE MILLS
WI
HOLGW HOLLINGSWORTH SLDRLS TERM .
POTTSTOWN
PA
HOLUB HOLUB DISTRIBUTING CO.
NEWPORT
KY
HSD
HARRIS CORP .
SEMICDR .
DIV.
MELBOURNE
FL
HUD
HUDSON TOOL & DIE CO.
NEWARK
NJ
HY/PL HYDRO PLASTICS
INC .
GEORGETOWN
KY
HYSYS HYBRID SYSTEMS
BEDFORD
MA
HYT
HYTRONICS
PINELLAS PARK
FL
ICI
ILLINOIS CAPACITOR
INC .
MORTON GROVE
IL
ICO-R ICO-RALLY
PALO ALTO
CA
IERC
INT'L ELEC .
RESEARCH CORP .
BURBANK
CA
INDCP
INDUCTIVE COMPONENTS
HAUPPAUGE
NY
INDEC
INDUSTRIAL ELECTRONIC HDWR .
NEW YORK
NY
INLOK INTERLOK/WM J PURDY CO .
BURLINGAME
CA
INT
INTERSIL,
INC .
CUPERTINO
CA
INWEB INTERNATIONAL WEBBING
WHITEHALL
PA
IRC
INTERNATIONAL RESISTANCE CO.
PHILADELPHIA
PA
IREC
INT'L RECTIFIER CORP .
LOS ANGELES
CA
ITRON
ISE ELECTRONICS
ISE, JAPAN
ITT
INT'L TELEPHONE & TELEGRAPH
W .
PALM BEACH
FL
JAMES JAMES ELECTRONICS
CHICAGO
IL
JAN
JAN HARDWARE MFG .
CO .
LONG ISLAND CITY
NY
JEF
JEFFERS
DUBOIS
PA
JEFWC JEFFERSON! WIRE AND CABLE
WORCHESTER
MA
JEW
JEWELL ELECTRICAL
INSTRUMENTS
MANCHESTER
NH
JFD
JFD ELECTRONICS
BROOKLYN
NY
JFW
JFW INDUSTRIES
BEECH GROVE
IN
JHSN
JOHANSON MFG .
CORP .
BOONTON
NJ
JON
E. F .
JOHNSON CO .
WASECA
MN
JUDD
JUDD WIRE DIV.
ECC
TURNERS FALLS
MA
K-L
KERRIGAN LEWIS MFG .
CHICAGO
IL
K-S
K & S ENGINEERING CO.
CHICAGO
IL
KDI-P KDI-PYROFILM CORP .
WHIPPANY
NJ
KEENE KEENE CORP .
NEWARK
DE
KEM
KEMTRON ELECTRON PRODUCTS
NEWBURYPORT
MA
KEY
KEYSTONE ELECTRONIC CORP .
NEW YORK
NY
KID
KIDCO,
INC .
MEDFORD
NJ
KIN
KINGS ELECTRONICS
TUCKAHOE
NY
KMYO
KAMAYA OHM
JAPAN
KRYST KRYSTINEL
PATERSON
NJ
KSTR
',(ESTER SOLDER DIV.
CHICAGO
IL
KSW
KSW ELECTRONICS
BURLINGTON
MA
KSW
KSW ELECTRONICS
BURLINGTON
MA
KUL
KULKA ELECTRIC CORP .
MT .
VERNON
NY
LAURN LAUREN MFG CO.
NEW PHILADELPHIA
OH
LEYSE LEYSE ALUMINUM CO.
KEWANEE
WI
LIT
L I TTELFUSE,
INC .
DES PLAINES
IL
LNMST LINEMASTER SWITCH CORP .
WOODSTOCK
CT
LOCTT LOCTITE CORP .
NEWINGTON
CT
LRC
LRC ELECTRONICS,
INC .
HORNELL
NY
LTRNX LITPONIX
CUPERTINO
CA
M-A
MICROWAVE ASSOCIATES
BURLINGTON
MA
M-D
MILLER DIAL & NAMEPLATE CO.
EL MONTE
CA
M-E
MEPCO ELECTRA,
INC .
MORRISTOWN
NJ
M-0
ILLUMINATED PRODUCTS
INC .
SANTA ANA
CA
M-P
MICRO PLASTICS
INC .
CHATSWORTH
CA
MAI.
.
MALLORY CONTROLS CO.
FRANKFORT
IN
MAND
MANDEX
CHICAGO
IL
MARQ
J.
& J .
MARQUARDT
TUTTLINGEN,
GER .
MCREL MICRO FLEX LTD
HONG KONG
MD-AM MID AMERICA
CHICAGO
IL
MDC
MAIDA DEVELOPMENT CO .
HAMPTON
VA
MDLRS MIDLAND ROSS
CINCINNATI
OH
MDTC
MODUTEC
NORWALK
CT
MILN
MILLEN MFG . CO.
NEW YORK
NY
MILLP MILITARY SPECIFICATION
WASHINGTON
DC
MIN-C MINI-CIRCUITS
BROOKLYN
NY
MINIS MINI SYSTEMS
NORTH ATTLEBORO
MA
ABBRV NAME . . . . . . . . . . . . . . . . . . . . . . . . . .
CITY. . . . . . . . . . . . . . . . .
ST
MINOR MINOR RUBBER CO.
BLOOMFIELD
NJ
MITEK MITEK
LEXINGTON
MA
MLRJW J. W .
MILLER
COMPTON
CA
MMM
3M COMPANY
ST .
PAUL
MN
MNO
MONSANTO COMM .
PROD.
DIV.
PALO ALTO
CA
MOL
MOLEX PRODUCTS
LISLE
IL
MORAD MORGA14 ADHESIVES
STOW
OH
MOSTK MOSTK CORP .
CARROLLTON
TX
MOT
MOTOROLA SEMI .
PROD .
DIV.
INDIANAPOLIS
IN
MRM
M .
ROSS MASON
INDIANAPOLIS
IN
MRO
MICRO SWITCH DIV.
FREEPORT
IL
MRRUB MARION RUBBER PROD .
INDIANAPOLIS
IN
MSN
MICROSONICS DIV .
WEYMOUTH
MA
MSP
MICRO SEMICONDUCTOR CORP .
SANTA ANA
CA
MULSO MULTICORE SOLDERS LTD .
WESTBURY
NY
MURA
MURA
MURA
MURA
WESTBURY
NY
MURGA
MWS
'MAGNET
MURATA-GEORGIA
WIRE SUPPLY CO.
CHATSWORTH
CA
MYERS MYERS SPRING CO .
LOGANSPORT
IN
N-T
NATIONAL TEL-TRONICS
LAREDO
TX
NAT
NATIONAL SEMICONDUCTOR CORP .
SANTA CLARA
CA
NCC
NATIONAL CERAMIC CO
TRENTON
NJ
NCSVC NATL COM SERV.
WILLOW GROVE
PA
NEC
NIPPON ELECTRIC CO .
TOKYO
JAPAN
NEL
NATIONAL ENGINEERING LABS
INDIANAPOLIS
IN
NEW
NEWARK ELECTRONICS
INDIANAPOLIS
IN
NHWC
NEW HAVEN WIRE & CABLE
NEW HAVEN
IN
NICHN NICHICON
(AMERICA)
CORP .
SCHAUMBURG
IL
NMB
NMB CORP
ARLINGTON HEIGHTS
IL
NMC
MAGNUM MICROWAVE CORP .
SUNNYVALE
CA
NPC
NUCLEONIC PRODUCTS CO.
CANOGA PARK
CA
NYLO
NYLOMATIC
MORRISVILLE
PA
O-G
OPTI-GAGE
INC .
DAYTON
OH
0-S
OMNI SPECTRA INC .
FARMINGTON
MI
OAK
OAK INDUSTRIES
INC .
CRYSTAL LAKE
IL
OHM
OHM I TE MFG.
CO .
SKOKIE
IL
OMEGA OMEGA WIRE & CABLE
HARLEYSVILLE
PA
OPTRN OPTRON
INC .
CARROLLTON
TX
P-B
POTTER AND BRUMFIELD
PRINCETON
IN
P-C
POWER COMPONENTS
WOODLAND HILLS
CA
P-K
PARKER KALON CORP .
CLIFTON
NJ
P-T
PENN TUBE PLASTICS CO .
CLIFTON HEIGHTS
PA
P-U
PROJECTS UNLIMITED
INC .
DAYTON
OH
POLPH POLYPHASE INSTR .
CO.
BRIDGEPORT
PA
PACTC PACTEC DIV .
PHILADELPHIA
PA
PAM
PAMOTOR DIV .
BURLINGAME
CA
PAND
PANDUIT CORP .
TINLEY PARK
IL
PARA
PARAMETRIC
INDUSTRIES
NORTHFIELD
IL
PCC
PANEL COMPONENTS CORP .
BERKELEY
CA
PEC
PACIFIC ELECTRICORD CO.
GARDENA
CA
PEM
PENN ENGRG & MANUF CO .
DANBORO
PA
PFZR
PFIZER,
NC .
PHC
PHILADELPHIA HANDLE CO .
CAMDEN
NJ
PHILP PHILPOTT RUBBER CO .
CLEVELAND
OH
PIC
PIHER INTERNATIONAL CORP .
ARLINGTON HEIGHTS
IL
PLI
PRECISION LAMP,
INC .
MT.
VIEW
CA
PLSSY PLESSEY ENG .
SCHILLER PARK
IL
PLSTI PLASTIC TECHNIQUES,
INC
NEW BOSTON
NH
PLYCL POLYCLAD LAMINATES
SOUTHFIELD
MI
PMCL
PERMACEL DIV.
NEW BRUNSWICK
NJ
PMI
PRECISION MONOLITHICS INC .
SANTA CLARA
CA
PNSNC PANASONIC
POM
POM014A ELECTRONICS CO.,
INC .
POMONA
CA
PREH
PREH VERT,MBH
GERMANY
##
PRMD
PYRAMID INDUSTRIES,
INC .
PHOENIX
AZ
PRSLK PRESTO-LOCK
GARFIELD
NJ
PRSN
PRECISION TUBE CO .,
INC
NORTH WALES
PA
PTN
PENN TRAM CORP.
BELLEFONT
PA
PWRMT POWER-MATE CORP .
HACKENSACK
NJ
PYRO
PYROFILM CORP .
WHIPPANY
NY
PYTT
PYTTRONICS INDUSTRIES,
INC .
MONTGOMERYVILLE
PA
Q-C
QUALITY COMPONENTS
ST.
MARYS
PA
R-N
ROBINSON-NUGENT
NEW ALBANY
IN
R-OHM R-OHM
IRVINE
CA
RAWST RAW STOCK
ABBRV NAME. . . . . . . . . . . . . . . . . . . . . . . . . .
CITY. . . . . . . . . . . . . . . . .
ST
RAY
RAYTHEON
INDIANAPOLIS
IN
RCA
RCA
CAMDEN
NJ
REL
RELIANCE MICA CO.
BROOKLYN
NY
RGNCY REGENCY ELECTRONICS
INC .
RGR
ROGERS CORP .
CHANDLER
AZ
RICH
RICHCO PLASTIC CO .
CHICAGO
IL
RICHM RICHARDS METAL PRODUCTS
WOLCOTT
CT
RMC
RADIO MATERIALS CORP .
CHICAGO
IL
RMF
RMF PRODUCTS INC .
BATAVIA
IL
ROCKW ROCKWELL
INTL .
ANAHEIM
CA
ROGAN ROGAN CORP .
NORTHBROOK
IL
ROTRN ROTRON INC .
WOODSTOCK
NY
RPBLC REPUBLIC ELECTRONICS CORP
PATTERSON
NJ
RSSLL RUSSELL
OCEANSIDE
NY
S-C
SPECIALTY CONNECTOR
INDIANAPOLIS
IN
S-G
STANDARD GRIGSBY
S-I
SWITCHCRAFT,
INC .
CHICAGO
IL
S-S
SERVICE SUPPLY
INDIANAPOLIS
IN
S-T
SARKES TARZIAN
BLOOMINGTON
IN
SAGE
SAGE LABORATORIES,
INC .
NATIC
MA
SAYRO SAYROSA ENGINEERS LTD .
ALTON,
HANTS.
U .K.
SCBE
SCANBE DIVISION
EL MONTE
CA
SCC
STACKPOLE CARBON CO.
ST .
MARYS
PA
SCX
SILICONIX
INC .
SANTA CLARA
CA
BEAST SEASTROM MFG .
CO .
GLENDALE
CA
SECR
SECOR
INC .
WESTWOOD
NJ
SEL
SEALECTRO CORP .
MAMARONECK
NY
SEM
SEMTECH
NEWBURY PARK
CA
SEMTX SEMTEX
DAYTON
OH
SGM
SIGMA INSTRUMENTS
BRAINTREE
MA
SGS-A SGS-ATES COMP ELET SPA
AGRATE BRIANZE,
ITALY ##
SHAM
SHAMROCK PLASTICS & RUBBER CO .
INDIANAPOLIS
IN
SHDW
I . E . E.
SCHADOW
EDEN PRAIRIE
MN
SHKMN SHACKMAN INSTRUMENTS
CHESHAM,
ENGLAND
##
SIEM
SIEMENS
ISELIN
NJ
SIG
SIGNETICS CORPORATION
SUNNYVALE
CA
SIGPT SIGMA PLASTRONICS
DEARBORN
MI
SINCR SINCLAIR
& RUSH,
INC .
ST.
LOUIS
MO
SKDRV STOCK DRIVE PROD.
DIV.
NEW HYDE PARK
NY
SLT
SOLITRONIMICROWAVE DIV .
PORT' SALERNO
FL
SMTC
SAMTEC
INC .
NEW ALBANY
IN
SOUTH SOUTHCO FASTENERS
LESTER
PA
SPE
SPECTROL
DAYTON
OH
SPEC
SPECTRUM CONTROL .
INC .
FAIRVIEW
PA
SPR
SPRAGUE ELECTRIC CO.
INDIANAPOLIS
IN
SPRTX SUPERTEX
INC .
CUPERTINO
CA
SPST
SPECTRA-STRIP
GARDEN GROVE
CA
SSS
SOLID STATE SCIENTIFIC
MONTGOMERYVILLE
PA
STDPS STANDARD PRESSED STEEL
JENKINTOWN
PA
STKFS STAKE FASTENERS
SOUTH EL MONTE
CA
STR
STETTNER TRUSH CO.
CAZENOVIA
NY
STSA
STEEL SALES
INDIANAPOLIS
IN
SYL
GTE SYLVANIA
WALTHAM
MA
SYNTC SYNTAC CORP .
CLEVELAND
OH
SYNTK SYNERTEK
SYS
SYSCON INTERNATIONAL,
INC .
SOUTH BEND
IN
T-I
TEXAS INSTRUMENTS
DALLAS
TX
TCPL
TACONIC PLASTIC
PETERSBURG
NY
TEK
TEKTRONIX
INDIANAPOLIS
IN
TEKA
TEKA PRODUCTS INC .
COLLEGE POINT
NY
TEKNT TECKNIT
CRANFORD
NJ
TELE
TELETYPE CORP .
ELK GROVE VILLAGE
IL
TELRY TELEDYNE RELAYS
HAWTHORNE
CA
TFI
T&F INDUSTRIES DIV .
ROLLING MEADOWS
IL
THR
THERMALLOY CO.
DALLAS
TX
TIMES TIMES WIRE AND CABLE
CINCINNAI
OH
TIN
TINNERMAN PRODUCTS,
INC .
CLEVELAND
OH
TKN
TECHNICAL WIRE
CRAWFORD
NJ
TLNC
TELONIC ALTAIR
LAGUNA BEACH
CA
TOKO
TOKO AMERICA
SKOKIE
IL
TOKO
TOKO AMERICA
SKOKIE
IL
TORCO TOR CORP .
VAN NUYS
CA
TR-UT TRIAD-UTRAD DIV .
HUNTINGTON
IN
TRIYX TRIONYX INDUSTRIES
INDIANAPOLIS
IN
TRU
WALDES TRUARC
LONG ISLAND CITY
NY
ABBRV NAME. . . . . . . . . . . . . . . . . . . . . . . . . .
CITY. . . . . . . . . . . . . . . . .
ST
TRW
TRW CAPACITOR DIV .
OGALLALA
NB
TSHBA TOSHIBA
TVL
TEL-VISION LABS
WAUCONDA
IL
TWAY
TWAY COMPANY
INDIANAPOLIS
IN
TYTON TYTON CORP .
MILWAUKEE
WI
U-C
UNIVERSAL COMPONENTS
LOS ANGELES
CA
ULSP
UNDERWRITERS LAB .
SPEC .
CHICAGO
IL
UNCAR UNION CARBIDE COMPONENTS
GREENVILLE
SC
UNIC
UNICORP
ORANGE
NJ
UNIT
UNITRODE CORP .
WATERTOWN
MA
USECO USECO DIV.
VAN NUYS
CA
UTK
UNITRACK DIV.
UPPER DARBY
PA
VAC
VACTEC
INC .
MARYLAND HEIGHTS
MO
VACO
VACO PRODUCTS CO .
NORTHBROOK
IL
VAR
VARADYNE CAPACITOR DIV .
SANTA MONICA
CA
VARIL VARI-L CO.
DENVER
CO
VELCR VELCRO USA
INC
NEW YORK
NY
VISCM VISUAL COMM
VLIER VLIER ENGINEERING CORP .
BURBANK
CA
VONGT VONNEGUT HARDWARE
INDIANAPOLIS
IN
VRN
VER14I TRON CORP .
GREAT NECK
NY
VTRMN VITRAMON .
INC .
BRIDGEPORT
CT
W-E
WELLS ELECTRONICS
SOUTH BEND
IN
W-I
WAVETEK INDIANA
INC .
BEECH GROVE
IN
WAG
WAONER ELECTRIC CORP .
ST .
LOUIS
MO
WECK
WECKESSER CO.,
INC .
CHICAGO
IL
WHTMN WHITMAN
CINCINNATI
OH
WKFLD WAKEFIELD ENGINEERING
WAKEFIELD
MA
WLDM
WALDOM
CHICAGO
IL
WMBG
W. M .
BERG
ROCKAWAY
NY
WNSL
WEINSCHEL ENGINEERING
GAITHERSBURG
MD
WNZLR WINZLER MFG
CHICAGO
IL
WSD
WAVETEK
SAN DIEGO
CA
WSTN
WESTON COMPONENTS
ARCHBALD
PA
ZEN
ZENITH RADIO CORP .
CHICAGO
IL
ZERO
ZERO MANUFACTURING CO.
BURBANK
CA
ZIE
ZIERICK MFG.
CORP .
MOUNT KISCO
NY
ZPT
ZIPFERTUBING .
CO.
LOS ANGELES
CA
WAVETEK NO .
QTY/PT
1
METER BOARD ASSY
C315
W-I
1110-00-0294
1
C315
2
MOD BD,C316
C316
W-I
1110-00-0751
1
15
CHASSIS,3000
A500-313
W-I
1111-00-0005
1
14
ATTEN,
50130-01
50130-01
W-I
1113-30-0041
1
13
WIDE OSC LK.M34
M34
W-I
1114-00-0008
1
12
NAR OSC LK.M33
M33
W-I
1114-00-0011
1
9
XTAL REF.M30
M30
W-I
1114-00-0012
1
8
FM REF,M29-2
M29-2
W-I
1114-00-0016
1
5
SWP OSC,M9W
M9W
W-I
1114-00-0020
1
10
KHZ STEPS.M31A
M31A
W-I
1114-00-0143
1
11
MHZ STEPS.M32A
M32A
W-I
1114-00-0215
1
NONE
DAC/SWP DRIVE,M172
M172
W-I
1114-00-0320
1
t1OMF_
OUTPUT AMP .M10W-9
M10W-9
W-I
1114-00-0360
1
3
POWER SUPPLY,DPS2A
DPS2A
W-I
1115-00-0011
1
147
CABLE ASSY,2-1/4
IN
14X2000-Al
W-I
1217-00-0022
1
1:10 W6
CABLE ASSY.3-1/4
IN
14X3001-1410
W-I
1217-00-0032
2
till W4
CABLE ASSY,4
IN
14X3001-144
W-I
1217-00-0040
2
WAVETEK
TITLE
ASSEMBLY NO.
REV
PARM LAST
SGL GEN.3000
1010-00-0013
0
REFERENCE DESIGNATORS
PART DESCRIPTION
ORIG-MFGR-PART-NO
MFGR
WAVETEK NO
Y
T
1412 WS 148 W9
CABLE ASSY,5
IN
14X3000-200-WIS
W-I
1217-00-0050
4
1413
CABLE ASSY.8-1/2
IN
14X3000-200-149
W-I
1217-00-0084
1
1414
CABLE ASSY,10-1/4 IN
14X3000-200-1421
W-I
1217-00-0102
1
W2
CABLE ASSY,5
IN
14X3000-200-143
W-I
1217-90-0003
1
W3
CABLE ASSY,2-1/4
IN
14X3000-200-1410
W-I
1217-90-0004
1
141
CABLE ASSY,7
IN
14X3001-141
W-I
1217-90-0005
1
16
HARNESS.3000-AB
WY3000-AB
W-I
1219-00-0016
1
P101
PLUG,36-PIN
03-06-2362
MOL
2113-04-0005
1
M0000-055
18
TERMINAL,MALE
1854
MOL
2113-OS-0002
36
MCOOO-019
WAVETEK
TITLE
ASSEMBLY NO .
REV
PARM LIST
SQL GEN.3000
1010-00-0013
0
PAOF "
3
i
i
PWR SW ASSY,16-1/2
1212-00-0006
WAVETEK NO .
CITY
C1
CAP,TANT- 47MF,50V
935
TRW
1510-21-9470
1
CE113-447
CRO5
DIODE D0000-007
5082-2800
H-P
4809-02--0001
1
CR2 CR3
DIODE DR000-001
IN4004
P-C
4806-01-4004
2
IC1
IC2 IC3
IC,I0000-005
RC4558NB
RAY
7000--14-5800
3
M1
METER,
3 SCALE
MI000-004
W-I
2410-06-0001
1
MI000-004
PI
PLUO,6-PIN KONEKTON
09-65-1061
MOL
2112-05-0002
1
M0000-075
ROI
POT,5K,RP130-250
89PR5K
BEK
4610-00-2502
1
R02
RES, C, 1/4W, 5Z, 7. 5K
CFI/4-7 .5K
ASE
4700-15-7501
1
RC103-275
R03
RES, MF, 1/BW, 1 ., 36 . 5K
f'F55K-36. 5K
ASE
4701-03-3652
1
RF213-365
R04 R28
RES, C, 1 /4W, 5'/. . 33K
CFI/4-33K
ASE
4700-15--3302
2
RC103-333
R05 R06
RES,MF,1/8W,1%,IOK
MF55KIOK
ASE
4701-03-1002
2
RF213-100
R07 R23
RES, C, 1/4W, 5'/., 20K
CFI/4-20K
ASE
4700-15--2002
2
RC103-320
ROB
RES,MF,1/8W,1
,2.74K
MF55K-2.74K
ASE
4701-03-2741
1
RF212-274
TITLE
ASSEMBLY NO.
REV
WAVETEK
METER BOARD ABBY
1110-00-0294
H
PARTS LIST
C315
PAGE'
1
REFERENCE DESIGNATORS
PART DESCRIPTION
ORIG-MFGR-PART-NO
MFGR
WAVETEK NO .
OTY
R09
RES,MF,i/BW,SI,11 .3K
MF55K-11 .3K
ASE
4701-03-1132
1
RF213-113
RIO
RES, MF, 1/8W, 1'/., 3.92K
MF55K-3.92K
ASE
4701-03-3921
1
RF212-392
Ril
POT,MOD,IOK,10G
70AIN048PI03U
A-B
4610-11-3103
1
RP140-310
R12 R15 R17 R18 R26
POT,20K,RP130-320
89PR20K
BEK
4610-00-2203
5
R13
RES, C, 1/4W . 5'/., 5.6K
CFI/4-5.6K
ASE
4700-15-5601
1
RC103-256
R14
RES.C,1/4W,5%.220K
CFI/4220K
ASE
4700-15-2203
1
RC103-422
R16 R20
RES, C, 1 /4W, 5'/., 1 OK
CFI /4-IOK
ASE
4700-15-1002
2
RC103-310
R19
RES,C,1/4W,5%,IM
CF1/4-IM
ASE
4700-15-1004
1
RC103-510
R21
RES,MF,I/BW,1G .15.BK
MF55K-15.8K
ASE
4701-03-1582
1
RF213-158
R22
POT,2K,RP130-220
89PR2K
BEK
4610-00-2202
1
R24
RES, C, 1/4W, 5'/., 68K
CFI/4-68K
ASE
4700-15-6802
1
RC103-368
R25
RES. C, 1/4W, 5'/. . 100K
CFI/4-100K
ASE
4700-15-1003
1
RC103-410
WAVETEK
TITLE
ASSEMBLY NO.
REV
METER BOARD ABBY
1110-00-0294
H
PARTS LIST
C315
PAGE :
2
WAVETEK NO .
OTY
R27
RES. C . 1 /4W. 5'/., 15K
CFI/4-15K
ASE
4700-15-1502
1
RC103-315
R33
RES. C . 1 /4W. 5'/. . 1 . 2K
CF1 /4-1 . 2K
ASE
4700-15-1201
1
RC103-212
R34
RES.VAR.CERMET.100
S9PR100
BEK
4610-00-2101
1
10%
WAVETEK
TITLE
ASSEMBLY NO.
REV
METER
BOARD ASSY
1110-00-0294
H
PAMS UST
C315
PAGE :
3
WAVETEK NO .
OTY
C1 C12 C13 C6
CAP)TANTo .47MF,50V
935
TRW
1510-21-9470
4
CE113-447
CIO C4 C9
CAP,MICA,1000PF,500V
DM15-102J
ARC
1510-50-0102
3
CMIOI-210
C11
CAP.CER . .OOIMFD.1KV
5GAD10
SPR
1510-10-1102
1
CD102-210
C14
CAP.CER, .05MF,100V
TG-S50
SPR
1510-10-2503
1
C0103-350
C13
CAP.CER, .OIMF,IOOV
6BU103M
MDC
1510-10-2103
1
CD103-310
C16 C17 CIS
CAP.TANT,IOMF,25V
162Di06XO025DD2
SPR
1510-21-7100
3
CE120-010
C2 C3 C7 CS
CAP.MICA.470PF.SOOV
DM15-471J
ARC
1510-50-0471
4
CMIO1-147
C5
CAP,CER,330PF,IKV
IOTCU-T33
SPR
1510-10-3331
1
CD104-133
CR1 CR2 CR3 CR4 CR5
DIODE DR000-001
1N4004
P-C
4806-01-4004
5
CR6 CR7 CRS
LED DLOOO-001
NSL5046
NAT
4810-02-0001
3
HHI
HARNESS .
MOD BD
WYC317
W-I
1219-00-0284
1
ICO1
IC02
DUAL OP AMP,RAYTHEON
RC4558NB-RAY
RAY
7000-45-5801
2
I0000-027
TITLE
ASSEMBLY NO.
REV
WAVETEK
MOD HD.C316
1110-00-0751
I
PARTS LIST
PAGE :
1
REFERENCE DESIGNATORS
PART DESCRIPTION
ORIG-MFGR-PART-NO
MFGR
WAVETEK NO .
OTY
IC3
DUAL OP AMP
RC4558NB
RAY
7000-14-5800
1
IC4
IC ICOOO-006
MC1455P1
MOT
7000-14-5500
1
J1
CONN.UG911A/U
KC79-146
KIN
2110-01-1013
1
J3109-111
OC1
LED.AXIAL VACTROL
VTL5C3
VAC
3710-00-0001
1
MPOOO-002
Pi
CONN.MALE.9-PIN
09-65-1091
MOL
2112-05-0001
1
MCOOO-071
01 02
TRANS GA054-580
2N5458
MOT
4901-05-4580
2
03
TRANS GA038-541
2N3854A
SST
4901-03-8541
1
2N3854A
R1+ R17 R30
RES.C,1/4W,5%.270K
CF1/4-270K
ASE
4700-15-2703
3
RC103-427
RIO R9
RES.MF.1/BW,I%,340 K
MF55K-340K
ASE
4701-03-3403
2
RF214-340
R11 R13 R25 R27
RES.C.1/4W, .S%,IOK
CFI/4-IOK
ASE
4700-15-1002
4
RC103-310
R12 R26 R3 R54
RES.C,1/4W.57G.1OOK
CFI/4-LOOK
ASE
4700-15-1003
4
RC103-410
R14
RES.C .1/4W.57G.470K
CFI/4-470K
ASE
4700-15-4703
1
RC103-447
TITLE
ASSEMBLY NO.
REV
WAVETEK
MOD BD.C316
1110-00-0751
I
PAM LIST
PAGE :
2
WAVETEK NO .
(ITY
R15*
RES,C,1/4W,5%,390K
CF1/4-390K
ASE
4700-15-3903
1
RC103-439
R16 R2 R37 R5
RES,C,1/4W,10%,10M
CB1061
A-B
4700-16-1005
4
RC104-610
RIB* R4*
RES,C,1/4W,10%,5.6M
CB5651
A-B
4700-16-5604
2
RC104-556
R19 R20* R53
RES,C,1/4W,10%,22M
CB2261
A-B
4700-16-2205
3
RC104-622
R21* R6*
RES,C,1/4W,10%,4.7M
CB4751
A-B
4700-16-4704
2
RC104-547
R22
RES,MF,1/8W,I%,464K
MF55K-464K
ASE
4701-03-4643
1
RF214-464
R23 R24
RES,MF,1/SW,I%,845K
MF55K-845K
ASE
4701-03-8453
2
RF214-845
R28
RES,C,1/4W,5%,560K
CFI/4-560K
ASE
4700-15-5603
1
RC103-456
R29
RES, C, 1/4W, 5X, 7. 5K
CFI/4-7.5K
ASE
4700-15-7501
1
RC103-275
R31
RES,MF,1/SW,1%,4.87K
MF55K-4.87K
ASE
4701-03-4871
1
RF212-487
R32 R42 R47
POT,IK,RP129-210
360SI02B
CTS
4610-00-1102
3
R33
RES,MF,1/BW,1%,12.1K
MF55K-12.IK
ASE
4701-03-1212
1
RF213-121
WAVETEK
TITLE
ASSEMBLY NO .
REV
MOD BD,C316
1110-00-0751
I
PARTS LIST
PAGE : 3
REFERENCE DESIGNATORS
PART DESCRIPTION
ORIG-MFGR-PART-NO
MFGR
WAVETEK NO .
OTY
R34 R35 R7*
RES,C .1/4W,5%,IM
CF1/4-iM
ASE
4700-15-1004
3
RC103-510
R36
POT,20K,RP129-320
36OS203B
CTS
4610-00-1203
1
R38
RES,C,1/4W,5%,47K
CF1/4-47K
ASE
4700-15-4702
1
RC103-347
R39
RES,C,1/4W,5%,ISK
CFI/4-18K
ASE
4700-15-1802
1
RC103-318
R40s
RES.C,1/4W,5%,680K
CF1/4-680K
ASE
4700-15-6803
1
RC103-468
R41
RES,MF,1/BW,1%,2.74K
MF55K-2.74K
ASE
4701-03-2741
1
RF212-274
R43
RES,MF,1/BW,1%,5.11K
MF55K-5.11K
ABE
4701-03-5111
1
RF212-511
R44
RES,SLIDETROL,IOK
RP137-310
W-I
4610-12-9103
1
PER B/P
R45
RES,C,1/4W.5%,33
CF1/4-33
ASE
4700-15-3309
1
RC103-033
R46 RS
RES.MF,1/BW,I%,178K
MF55K-178K
ASE
4701-03-1783
2
RF214-178
R48
RES,MF,1/8W.I%,1 .50K
MF55K-1 .50K
ASE
4701-03-1501
1
RF212-150
WAVETEK
WBD, C316
l 3108OYON0751
REV,
PARTS LIST
PAGE :
4
WAVETEK NO .
CITY
R49
RES.C .1/4W.S%,1K
CF1/4-iK
ASE
4700-15-1001
1
RC103-210
R50
RES.C .1/4W,5%,200
CF1/4-200
ASE
4700-15-2000
1
RC103-120
R51
RES, C, 1/4W . 5 ..4.7K
CFI/4-4.7K
ASE
4700-15-4701
1
RC103-247
R52
RES,C,1/4W,5%,330
CF1/4-330
ASE
4700-15-3300
1
RC103-133
R55
RES.C .1/4W,10%,47M
CB4761
A-B
4700-16-4705
1
RC104-647
R56
RES, C, 1/4W,5'/., 620
CF1/4-620
ASE
4700-15-6200
1
RC103-162
S1 52
LEVER SWITCH
SL000-003
W-I
5101-00-0003
2
FROM:5101-00-0007
WAVETEK
TITLE
ASSEMBLY NO .
REV
MOD BD,C316
1110-00-0751
I
PARTS LIST
PAGE
:
5
WAVETEK NO .
CITY
F101
FUSE,SLO BLO,1 AMP,
MDL-1
BUS
2410-05-0005
1
250V
IC101
POS,
VOLTAGE REG .
LM317T
NAT
7000-03-1700
1
J101
CONN,6-PIN,KONEKTON
09-50-3061
MOL
2113-06-0002
1
MCOOO-076
J201
RECEPTACLE
19-09-1042
MOL
2113-26-0002
1
18
CONTACT,M0000-131
08-50-0106
MOL
2113-07-0002
5
0101
0102
PROT PWR DARLINGTON
LM395T
NAT
4902-00-3950
2
S101
SWITCH,SLIDE,DPDT
EPSI-SLI
S-I
5105-00-0011
1
T101
XFMR,PWR
8720
A-M
5610-00-0027
1
23
PC ASSEMBLY,
DPS2A
1218-00-0250
W-I
1218-00-0250
1
24
LINE CORD ASSEMBLY
1219-00-0144
W-I
1219-00-0144
1
WAVETEK
TITLE
ASSEMBLY NO .
REV
POWER SUPPLY,DPS2A
1115-00-0011
C
PARTS LIST
PAGE :
i
REFERENCE DESIGNATORS
PART DESCRIPTION
ORIG-MFGR-PART-NO
MFGR
WAVETEK NO .
GTY
C02 C06
CAP,CER, .005MF,IOOV
TG-D50
SPR
1510-10-2502
2
C02 C06
CAP,CER, .005MF,100V
TG-D50
SPR
1510-10-2502
2
C03 C05 C07
CAP,ELECT,lMF,25V
162D105X9025BC2
SPR
1510-21-7010
3
CE120-001
C04 C09
CAP,ELECT,IOOMF .25V
TE1211
SPR
1510-20-4101
2
CE105-110
CIO
CAP,I000OMF,16V
D76381
SPR
1510-21-4103
1
CE122-310
C11
CAP,TANT,10MF,25V
162D106XO025DD2
SPR
1510-21-7100
1
CE120-010
CR01
DIODE BRIDGE
MDA101
MU'T
480b-02-0003
1
CR02 CR04
DIODE DG109-140
IN4148
FCD
4807-01-0914
2
CR03 CRO5 CR08
DIODE DR000-001
1N4004
P-C
4806-01-4004
3
CR06 CR07
DIODE DROOO-009
IN5624
G-E
4806-01-5624
2
FO1
FUSE,S.B.,2AMP
313-002
LIT
2410-05-0001
1
MFOOO-002
ICO1
VOLTAGE REFERENCE
REF-02CJ
PMI
7000-00-0200
1
IC02
DUAL OP AMP
TLO82CP
T-I
7000-00-8200
1
JO1
J02 J03
CONN- RECEPT- 3-PIN
6-86105-3
AMP
2112-25-0001
3
WAVETEK
TITLE
ASSEMBLY NO .
REV
PC ASSEMBLY,
DPS2A
1215-00--0250
PARTS LIST
PAGE .
1
