Making Measurements; Measuring Dc/Ac Voltage - Radio Shack 22-178 Owner's Manual

22-178.fm Page 22 Friday, August 6, 1999 11:38 AM

MAKING MEASUREMENTS

MEASURING DC/AC VOLTAGE

Caution: The maximum input limit for voltage measure-
ment is 1000V DC and 750V AC (RMS). If you try to mea-
sure a DC voltage above 1000 volts or an AC voltage
above 750 volts RMS, you can damage your meter.
When you connect the meter to a voltage higher than the
maximum rating, all the digits on the display blink. Dis-
connect the probes immediately.
Follow these steps to measure DC or AC voltage.
1. Set the selector to
voltages.
When you measure DC voltages,
display. When you measure AC voltages,
on the display.
2. Plug the red test lead into the
and the black test lead into the
3. Connect the probes to the circuit you want to test.
When you measure DC voltages, the minus sign
appears if you connected the black lead to a point in
the circuit that has a higher voltage potential than
where you connected the red lead.
22
for DC voltages or
V ~V
appears on the
~
V•W•
•mA•mA•
jack.
COM
for AC
appears
jack