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DIODE TEST
Test current : 1.0mA ± 0.6mA
Accuracy : ±(6.0% rdg + 3dgts)
Open circuit volts : 3.0Vdc typical
Audible Indication : < 30mV
Overload protection : 600VDC or AC rms
AC CURRENT (True RMS) (Put conductor at the
center of the jaws)
Ranges : 20A, 200A, 1000A
Accuracy :
±(1.5%rdg + 10dgts) on all ranges (50Hz/60Hz)
±(3.5%rdg + 10dgts) on 700A(40Hz/500Hz)
±(2.0%rdg+ 10dgts) on700A to 1000A(50Hz/60Hz)
Overload protection : 1000Aac max. for 1 minute
OPERATION
Before taking any measurements, read the Safety
Information Section. Always examine the instrument for
damage, contamination (excessive dirt, grease, etc.) and
defects. Examine the test leads for cracked or frayed
insulation. If any abnarmal conditions exist do not attempt
to make any measurements.
H
Button : Press "
H
" button to toggle in and out of
DATA Hold mode, In the DATA Hold mode, the "
annunciator is displayed. (The DATA Hold mode may be
exited when changing function.)
5
3. When the reading is lower than 200 counts, set the
range switch to the next lower range position. For
maximum accuracy, select the lower range possible
without overranging the meter.
Resistance Measurements
1. Set the Function/Range switch to the desired resistance
range.
2. Remove power from the equipment under test.
3. Connect the red test lead to the " + " jack and the black
test lead to the "COM" jack.
4. Touch the probes to the test points. In ohms, the value
indicated in the display is the measured value of
resistance.
WARNING
The accuracy of the functions might be slightly affected,
when exposed to a radiated electromagnetic field
environment, eg, radio, telephone or similar.
Frequency Measurements
1. Set the Functian/Range switch to the Hz position.
2. Connect the red test lead to the " + " jack and the black
test lead to the "COM" jack.
3. Connect the test leads to the point of measurement
and read the frequency from the display.
Continuity Measurements
1. Set the Function/Range switch to the "
2. Touch the probes to the test points. the beeper sounds
continuously, if the resistance is less than 30V.
7
H
"
/ 2KV" position.
MAX HOLD Button :
Press " MAX " button to toggle in and out of MAX Hold
mode (holding the highest absolute reading). In the MAX
Hold mode, the "
MAX
" annunciator is displayed.
Current and Hz ranges without MAX HOLD function.
PEAK HOLD Button : (only current ranges 40-60Hz)
Press "PEAK" button to toggle in and out of PEAK Hold
mode. In the PEAK Hold mode, the "
displayed. {Accuracy : ± [10% (readind -residual offset) +
10dgts], effect reading : 80~2000}
Voltage Measurements
1. Connect the red test lead to the "V" jack and the black
test lead to the "COM" jack.
2. Set the Function/Range switch to the desired Voltage
type (AC or DC) and range. If magnitude of voltage is
not known, set switch to the highest range and reduce
until a satisfactory reading is obtained.
3. Connect the test leads to the device or circuit being
measured.
4. For dc, a (-) sign is displayed for negative polarity,
positive polarity is implied.
Curreat Measurements
1. Set the Function/Range switch to the highest 1000A
ac range.
2. Press the trigger to open transformer jaws and clamp
onto one conductor only, Read the current directly on
the display. It is recommended that the conductor be
placed at the center of the closed jaws for maximum
accuracy.
Diode Tests
1. Connect the red test lead to the " + " jack and the black
test lead to the "COM" jack.
2. Set the Function/Range switch to the "
3. Turn off power to the circuit under test.
4. Touch probes to the diode. A forward-voltage drop is
about 0.6V (typical for a silicon diode).
5. Reverse probes. If the diode is goad, "OL" is displayed.
If the diode is shorted, ".000" or another number is
displayed.
6. If the diode is open, "OL" is displayed in both directions.
7. If the junction is measured in a circuit and a low reading
is obtained with both lead connections, the junction may
be shunted by a resistance of less than 1kV. In this
case the diode must be disconnected from the circuit
for accurate testing,
MAINTENANCE
WARNING : Remove test leads before changing battery
or performing any servicing.
Battery Replacement
Power is supplied by a 9 volt "transistor" battery. (NEDA
1604, IEC 6F22). The "
" appears on the LCD display
when replacement is needed. Ta replace the battery,
remove the two screws from the back of the meter and lift
off the battery cover. Remove the battery from battery
contacts.
Cleaning
Periodically wipe the case with a damp cloth and
detergent, do not use abrasives or solvents.
P
" annunciator is
6
" position.
8
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