Test Products International 126 - Manual (Page 13)

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2. Step by Step Procedures:
a. MEASURING DC VOLTS
CAUTION!
Do not attempt to make a voltage measurement
if a test lead is plugged in the A or µmA input
jack. Instrument damage and/or personal
injury may result.
WARNING!
Do not attempt to make a voltage measurement
of more than 1000V or of a voltage level that is
unknown.
Instrument set-up:
FUNCTION BLACK RED MINIMUM MAXIMUM
TEST LEAD TEST LEAD READING READING
mV COM V
Ω
0.1mV 400.0mV
V COM V
Ω
0.001V 600V
Measurement Procedure:
1. Disconnect power to the circuit to be measured.
2. Plug the black test lead into the COM input jack.
3 Plug red test lead into the V Ω input jack.
4. Set rotary switch to either the mV or V range,
depending on the voltage to be measured.
5. Connect the test leads to the circuit to be measured.
6. Reconnect power to the circuit to be measured.
7. Read the voltage on the 126.
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Application Notes
When measuring DC Voltage of a bat-
tery, the most accurate reading can be
attained by testing the battery under
load. To accomplish this, follow steps 1
through 4 shown on page 10 and the
following:
• Connect the red test lead from the
meter to the positive (+) terminal of
the battery.
• Connect the black test lead to the
negative (-) terminal of the battery.
• Reconnect power to the circuit and
read the voltage on the 126.