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23
e. Measuring Resistance
WARNING!
Do not attempt to make resistance measurements with
circuit energized. For best results, remove the resistor
completely from the circuit before attempting to measure
it.
NOTE:
To make accurate low ohm measurements, short the ends
of test leads together and record the resistance reading.
Deduct this value from actual readings.
Instrument set-up:
FUNCTION BLACK
RED
MINIMUM
MAXIMUM
TEST LEAD
TEST LEAD
READING
READING
COM
0.01
Ω
50.000M
Ω
Measurement Procedure:
1. Disconnect power to circuit to be measured.
2. Plug black test lead into the
COM
input jack.
3. Plug red test lead into
input jack.
4. Set the rotary switch to the
function.
5.Connect the test leads to the circuit to be measured.
6. Read the resistance value on the LCD.
d. Measuring AC Amps
CAUTION
Do not attempt to make a current measurement with the
test leads connected in parallel with the circuit to be
tested. Test leads must be connected in series with the
circuit.
WARNING!
Do not attempt to make a current measurement of circuits
with more than 600V present. Instrument damage and/or
personal injury may result
.
Instrument set-up:
FUNCTION BLACK
RED
MINIMUM
MAXIMUM
TEST LEAD
TEST LEAD
READING
READING
COM
mA
0.001mA
500.00mA
COM A 0.0001A
10.000A
Measurement Procedure
:
1. Disconnect power to circuit to be measured.
2. Plug black test lead into the
COM
input jack.
3. Plug the red test into the
mA
or
A
input jack depending
on the value of current to be measured.
4. Set the rotary switch to the
or
function.
5. Press the orange push button.
6. Connect test leads in series to circuit to be measured.
7. Reconnect power to circuit to be measured.
8. Read the current on the LCD.