True RMS Digital Multimeters
Operating Basics
19
Application: Measuring Low Resistance Values
To measure low resistance values to 0.01 Ω resolution, set the meter to 50 Ω
mode and short the leads together to subtract the lead resistance from low-
resistance measurements. If you do not short the leads together, the meter will
not enter 50 Ω mode. The lead resistance must be less than 5 Ω. The measured
resistance shows on the main display.
Caution
To avoid damaging the meter, remove all power from the
circuit before connecting the test leads.
Capacitance Measurement
Measurement Softkey
Connect
Leads
Main
Display
Upper
Display
Capacitance (no
selection)
ahr15f.eps
F--
Caution
To avoid damaging the meter, remove all power from the
circuit before connecting the test leads.
Measuring large-value capacitors may take several seconds.
Follow the procedures below when making capacitance measurements:
• Remove capacitors from circuitry.
• Discharge capacitors before measuring them.
• To measure small values of capacitance accurately, press
REL t
when
the leads are open.
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