5
5.4 DC AMPS
A
If the fuse burns out during measurement, the meter may be damaged or personal injury may occur. To avoid possible damage to the
meter or to the equipment under test, check the meter’s fuses before measuring current. Use the proper terminals, function, and range
for the measurement. Never place the test leads in parallel with any circuit or component when the leads are plugged into the current
terminals. Do not attempt to measure current exceeding 10Amps DC. If you are not sure if the current exceeds 10Amps do not attempt to
measure current with this meter.
1. Insert the black test (negative) lead into the
COM input terminal.
2. Insert the red (positive) test lead into the 10A terminal to the left of the
COM terminal for current measurements greater than 200mA AC.
Insert the red (positive) test lead into the
INPUT terminal to the right of the COM terminal for current measurements of 200mA AC or less.
3. Set the Rotary Switch to
A
A
400A
400A
A
A
400A
400A
4. Press the
“SELECT” button until DC is shown on the display.
5. Turn off power to the circuit to be measured.
6. Open the circuit to be measured.
7. Touch the red test lead to the positive side of the break in the circuit and the black test lead
to the negative side of the break in the circuit for DC Amp measurement.
8. Return power to the circuit.
9. Read the amps on the display.
Note: When the measured current is <5 amps continuous measurement is acceptable. When the measured current is 5–10 amps
do not exceed 10 seconds of continuous measurement. Wait 15 minutes before performing additional current measurements.
Always turn of power to circuit and remove the leads from the circuit before removing and reinserting the leads into the meter’s
input terminals. Once the measurement is complete, immediately remove the test leads from the circuit under test and remove the
test leads from the input terminals of the meter.
5.5 RESISTANCE
When measuring resistance always make sure the power to the circuit is off.
1. Insert the black (negative) test lead into the
COM input terminal.
2. Insert the red (positive) test lead into the
INPUT terminal to the right of the COM terminal.
3. Set the Rotary Switch to (ohms).
4. Touch the test leads to the resistor or non-energized component to be measured.
5. Read the value of the measurement displayed. With resistance measurements, the polarity of the test leads is not a factor.
6. Typical resistance measurements include resistors, potentiometers, switches, extension cords and fuses.
Note: For measurements > 1M
Ω
, the meter may take a few seconds to stabilize reading. This is normal for high
resistance measurements. When the input is not connected, i.e. at open circuit, “ OL” will be displayed as an overrange indication.
5.6 CONTINUITY
To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all
the high-voltage capacitors before measuring resistance.
Do not input 60V DC or 30V AC to avoid personal harm. Do not use on energized circuits.
1. Insert the black (negative) test lead into the
COM input terminal.
2. Insert the red (positive) test lead into the
INPUT terminal to the right of the COM terminal.
3. Set the Rotary Switch to
A
A
400A
400A
4. Press the
SELECT button until
is shown on the display.
5. Connect the test leads across with the object being measured.
6. The buzzer sounds continuously if the resistance of a circuit under test is <~10
Ω
. It indicates the circuit connection is good.
7. The buzzer does not sound if the resistance of a circuit under test is >70
Ω
. It indicates a possible broken circuit.
8. The buzzer may or may not sound if the resistance of a circuit under test is 10
Ω
-70
Ω
.
9. Read the resistance value on the display.
10. Typical continuity measurements include switches, extension cords and fuses.
Note: Open circuit voltage is around 2V. When the input is not connected, i.e. at open circuit,
“ OL” will be displayed as an overrange indication.
5.7 DIODE
A
A
400A
400A
1. Insert the black test (negative) lead into the
COM input terminal.
2. Insert the red (positive) test lead into the INPUT terminal to the right of the
COM terminal.
3. Set the Rotary Switch to
A
A
400A
400A
4. Press the
SELECT button until
A
A
400A
400A
is shown on the display.
5. For forward voltage drop readings on any semiconductor component,
place the red test lead on the component’s anode and place the black test lead on the component’s cathode.
6. Read the resistance value on the display.
Note: When measuring resistance, the circuit should be powered off and all capacitors should be completely discharged prior to testing.
A more accurate measurement can be achieved by separating the component from the circuit being tested. When the test leads are not
connected or are reversed, the display will show an over-range symbol
“OL”.
