17
Measuring Resistance
To measure resistance, connect the black lead to common terminal
and red one to V/
terminal, and turn the rotary switch to
range as Figure 5-3. Connect the test leads across the resistance
under measurement.
* CAUTION
Turn off power on the test circuit and discharge all capacitors
before attempting in-circuit resistance measurements, If an
external voltage is present across a component, it will be
impossible to take an accurate measurement of the resistance
of that component.
Due to the sensitive nature of the 400
range, a residual resistance is present. This resistance will display itself,
if the probes are
shorted. This residual resistance is due to the lead, track and switch resistance. To obtain measurement within the
stated accuracy when using the 400
range subtract from your value the residual resistance reading.
* Over range is being indicated by flickered OL display
R
E
D
B
L
A
C
K
Figure 5-3. Measuring resistance
