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To measure voltages, set up the Meter as Figure 3-1 and do the following:
1. Insert the red test lead into the V terminal and the black test lead into the COM terminal.
2. COD. 51253: Set the rotary switch to
or
or
COD. 51254: Set the rotary switch
to
or
or
.
3. Connect the test leads across with the object being measured.
4. The measured value shows on the display.
AC measurement displays the True RMS value.
DC measurement displays the effective value of sine wave (mean value response).
When a ACV function is selected, you can press the Yellow Button to view the AC + DC True
RMS value in the primary display. To exit, please EXIT button.
The BLUE button cycles among
, frequency and duty cycle.
Note
- When measuring voltage, the Meter acts around a 10M (
and
) or 2.5G (
) impedance in parallel with the circuit. This loading effect can cause measurement errors in high
impedance circuits. In most cases, the error is negligible (0.1% or less) if the circuit impedance is
10k or less.
- Special care should be taken when measuring high voltage.
- When voltage measurement has been completed, disconnect the connection between the testing
leads and the circuit under test and remove testing leads away from the input terminals of the Meter.
B. Measuring Currents
Warning!
If the fuse burns out during measurement, the Meter may be damaged or the
operator himself may be hurt.
To avoid possible damage to the Meter or to the equipment under test, check the
Meter’s fuses before measuring current. Use proper terminals, function, and range
for the measurement. Never place the testing leads in parallel with any circuit or
component when the leads are plugged into the current terminals.
To measure AC or DC current, set up the Meter as Figure 3-2 and proceed as follows:
1. Turn off power to the circuit. Discharge all highvoltage capacitors.
2. Insert the red test lead into the
mAµA
or
A
terminal and black test lead into the
COM
terminal.
3. If you are using the
A
terminal, set the rotary switch to
.If you are using
mAµA
terminal, set the rotary switch to
µA
for currents below 20000µA , or
mA
(COD. 51253) or
%
(COD. 51254) for current above 20000µA.
Figure 3-2. Currents Measurement
