Operating manual [PDF] (35 pages)
- Brand: Tenma
- Model: 72-7740
- Format: PDF
- Key Aspects: Best Practices for Everyday Use, Standard Operating Procedures, Technical Data and Parameters
- Updated: 18.04.2026
- Source File: 1131527.pdf
- Pages: 35
- Description: Product manual for the Tenma 72-7740.
Document Preview & Text Transcription
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Unpacking Inspection
Rules For Safe Operation
Title
Page
Table of Contents
1
D.
Continuity Test
International Electrical Symbols
AC Voltage Measurement
Capacitance Measurement
The Use of Relative Value Mode
The Meter Structure
Turning on the Display Backlight
General Specifications
Resistance
Overview
Safety Information
Rotary Switch
Functional Buttons
Display Symbols
Measurement Ranges
A.
B.
Measurement Operation
A.
B.
C.
D.
Testing for Continuity
E.
F.
G.
H.
I.
Temperature Measurement
J.
Operation of Hold Mode
The POWER Button
The BLUE Button
Sleep Mode (Model 72-7740 only)
Accuracy Specifications
A.
DC Voltage
B.
AC Voltage
C.
Selecting a Measurement Range
Manual Ranging and Autoranging
DC Voltage Measurement
Measuring Resistance
Frequency Measurement
DC or AC Current Measurement
Testing Diodes
Measuring Duty Cycle
Model 72-7740/72-7745: OPERATING MANUAL
Capacitance
Frequency & Duty Cycle
DC Current
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Page
2
J.
AC Current
Maintenance
A.
General Service
B.
Testing the Fuses
C.
Replacing the Battery
D.
Replacing the Fuses
RS232C Serial Port (Model 72-7745)
A.
RS232C Port Cable
B.
Setting of RS232C Serial Ports
C.
System Requirements for
Installing the serial Interface Program
Diode Test
I.
E.
F.
G.
H.
Temperature
Model 72-7740/72-7745: OPERATING MANUAL
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Overview
This Operating Manual covers information on safety and
cautions. Please read the relevant information carefully
and observe all the Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read the
“Safety Information” and “Rules for Safe Operation”
carefully before using the Meter.
Digital Multimeter Model 72-7740 (hereafter referred to
as “the Meter”) have autorange and manual range options
with maximum reading 3999. The enclosure structure
design adopted advanced “co-injection” technique in
order to provide sufficient insulation.
Model 72-7740/72-7745: OPERATING MANUAL
Qty
1 piece
1 pair
1 pair
1 piece
1 piece
Item
1
2
3
4
5
Description
Operating Manual
Test Lead
Test Clip
CAT IV: Primary supply level, overhead lines, cable
systems etc.
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Unpacking Inspection
Open the package case and take out the Meter. Check the
following items carefully to see any missing or damaged part:
In the event you find any items missing or damaged,
please contact your dealer immediately.
Safety Information
This Meter complies with the standards IEC61010: in
pollution degree 2, overvoltage category (CAT. III 1000V,
CAT. IV 600V;)and double insulation.
CAT. III: Distribution level, fixed installation, with smaller
transient overvoltages than CAT. IV
Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.
In this manual, a Warning identifies conditions and
actions that pose hazards to the user, or may damage
the Meter or the equipment under test.
A Note identifies the information that user should pay
attention to.
International electrical symbols used on the Meter and
in this Operating Manual are explained on page 6.
Point Contact Temperature Probe
9V Battery (NEDA1604, 6F22 or 006P)
(installed)
Model 72-7740/72-7745: OPERATING MANUAL
