How are the various quantities measured?
Benchtop multimeters, 6000 and 60000 points
17
How are the various quantities measured?
1. Voltage
measurement
:
AC voltage measurement, or measurement of an AC voltage
superposed on a DC voltage, or DC voltage measurement at high
impedance.
:
AC voltage measurement at high impedance
:
This position is provided to allow measurements in electrical
installations. The input impedance <1M
Ω
serves to avoid
measuring "phantom" voltages due to couplings between the lines.
In all cases, “
O.L
” is displayed above 1050V and a beep sounds when the
measurement exceeds 600V.
1. Set the switch to
or
or
.
2. Select AC+DC or DC coupling of the signal by pressing
(the
default coupling is AC+DC).
Depending on what you select, the screen displays DC or AC+DC.
3. Connect the black lead to the “
COM
”
terminal and the red lead to “
+
”.
4. Place the test probes on the terminals of the circuit to be measured:
5. Read the measurement value indicated on the display unit.
6. As default, the 2nd display unit indicates the frequency, except in DC.
Remark:
It is possible to activate the filter in V
LowZ
, V
AC+DC
, V
AC
.
The cutoff frequency of the filter is
≤
300Hz.
When a voltage having a frequency above 150Hz is
measured, it is heavily attenuated, and so a large error may
be observed. It is necessary in this case to deactivate the
filter to have the full bandwidth.
