BK Precision 881 Instruction Manual
Text of the manual
MANUAL DE INSTRUCCIÓNES
In-Circuit ESR & DCR Cap Tester
Model 881
MEDIDOR DE RESISTENCIA ESR&DSR DE
CAPACITORES
MODELO 881
An electrical current of over 10 milliamps passing through the heart
will stop most human hearts. Voltage of as low as 35 Volts dc or ac
rms should be considered hazardous since it can produce lethal
current under certain conditions. Be sure to observe the following
safety precautions:
1. There are no high voltages in the Cap Tester, but the equipment
under test usually contains hazardous high voltage. Always follow
the safety recommendations of the manufacturer of your
equipment.
2. Some equipment may be wired as a "hot chassis" type; equipment
using two-wire power plugs are always suspect and it may even
include those with polarized plugs. Never touch chassis of "hot
chassis" type equipment to avoid the possibility of a serious,
possibly fatal electrical shock.
3. Don't expose yourself needlessly to high voltage; only remove
housings and covers when necessary.
4. Familiarize yourself with the equipment being tested and the
location of its high voltage points. However be aware that high
voltage may appear at unexpected points in defective equipment.
5. Never work alone. Someone should be nearby to render aid if
needed. Training in CPR (Cardio-pulmonary resuscitation) is
highly recommended.
Open circuit probe voltage
15mV pp (typical)
Output test frequency
100 KHz sine wave (typical)
Measures ESR
ESR range ohms
0.1 – 30
(25 segment LED bar scale) Beeps from 1 to 5 beeps depending on
ESR of capacitor
Measures DCR
DCR range ohms
0.5 - 30 flashing
the LED
Power
One 9V battery or
an external AC
adapter (9V DC
150mA 5.5mm x
2.1 mm center
pin+)
Power drain
10mA typical
Dimensions
2.1" x 3.6" x 6.0"
NOTE: Specifications and information are subject to change without
notice. Please visit www.bkprecision.com for the most current product
information.
CONTROLS AND INDICATORS
1.
Power Switch - Power on or off
2.
DCR Low Indicator - LED turns on when DCR low
3.
Mode switch - Selects test modes "ESR" or
"DCR&ESR"
4.
ESR or DCR Indicator - Indicate the ESR or DCR
5.
Colored chart - The three-colored chart that show typical ESR
readings of good, fair, and bad capacitors depending
on their capacitance.
6.
Square connector - Capacitance
7.
Bat Low - Indicates battery condition.
8.
AC Adapter Jack - 9V DC, 100mA center pin + adapter
input.
