Resistance Measurement - Amprobe CR50A User Manual

Resistance Measurement

1. Turn off power to the resistance to be
measured and discharge any capacitors.
Any voltage present during a resistance
measurement will cause inaccurate readings.
Connect red test lead to +Rx Input (red) and
black test lead to -Rx Input.
2. Set Function/Range Switch to the desired
Ω position.
3. Connect test leads to resistance or circuit to
be measured.
4. Read resistance value on Digital Display.
Open circuits will be displayed as an
overload condition.
Note: On the 20Ω range, an adjustment
potentiometer (ZERO ADJ.) allows you to zero
out the test lead resistance. Short the test leads
and adjust the knob until the display reads zero.
OFF
CAP.
ZERO
200p
ADJUST
2n
20n
200
n
2
20
F
200
2m
20m
Cx
DISCHARGE CAPACITOR
BEFORE CONNECTING
ZERO
ADJUST
20
(20 )
200
2k
20
k
200
k
2M
20M
CR50
Rx
4
1.520 k
2
1
4
3