PeakTech 2015 A, Operation Manual

Page: 52 / 64

52
6.3. Measuring Resistance
WARNING!
* Never connect the test leads to a source of voltage when
you have the selected the OHMS function and plugged
the test leads into the V/

/Hz-terminal.
* Be sure that the circuit under test has all power removed
and that any associated capacitors are fully discharged
before you make a resistance measurement.
1. Set the rotary selector to the desired OHM function.
2.
Plug the black test lead into your meter’s COM terminal
and the red test lead into your meter’s V/

/Hz-terminal.
3. Connect the test leads to the device you want to
measure.
The resistance measuring circuit compares the voltage
gained through a known resistance (internal) with the
voltage developed across the unknown resistance. So,
when you check in-circuit resistance, be sure the circuit
under test has all power removed (all capacitors are fully
discharged).
Notes:
* When you short the test leads in the 600

range, your
meter displays a small value (no more than 0.3

). This
value is due to your meter’s and test leads internal
resistance. Press REL to subtract it from small
resistance measurements for better accuracy.

Always take care of a good connection, as a bad
connection influences the resistance measurement.