User Manual

7.3. Resistance measurements
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.
1. Insert the BLACK and RED test leads into the COM and
V//CAP/Hz-input terminals respectively.
2. Set the rotary selector switch to the () 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) range. The error is usually 0.1 to 0.2 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.
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