Resistance Measurements; Continuity Testing - Promax PD-185 Manual De Instrucciones

USER'S MANUAL PD-185

4.7 Resistance measurements

CAUTION
Turn off power on the test circuit and discharge all
capacitors
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.
1. Insert the BLACK and RED test leads into the COM and VΩ
input terminals respectively.
2. Set the rotary selector switch to the (Ω) position.
3. Connect the BLACK and RED test probe tips to the circuit or
device under test, making sure it is de-energized first.
4. The resistance in the test leads can diminish accuracy on
the lowest (400 Ω) range. The error is usually 0.1 to 0.2 Ω
for a standard pair of test leads. To determine the error,
short the test leads together and then use the (REL)
Relative mode to automatically subtract the lead resistance
from resistance measurements.

4.8 Continuity testing

1. Select the (Ω /
selector switch.
2. Press SHIFT until the symbol
3. Follow steps 1 and 3 as for resistance measurements. An
audible
approximately 40Ω.
11/2015
before attempting
/
tone will sound
in-circuit
) position by turning the rotary
appears on the screen.
for resistance
resistance
less than
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