3.2. AC
Example of an AC signal with a DC component.
«AUTO
AC signal only V
By successive presses on the
the DC component only and return to AC only.
(1) represents the rms value of the signal
NB: If V
is nil, the automatic display «AUTO
DC
of the signal.
Connect the leads to the multimeter and connect in parallel to the circuit to be
tested.
When the order of magnitude is not known, place the switch on the highest range
then progressively lower to the appropriate range.
For the 1000 V rating:
Analogue reading: to get the voltage in V, multiply the value read on the appropriate
scale by the reading coefficient shown in the table.
Digital reading: if necessary, press the following keys:
-
- MAX
- HOLD to hold the value in memory
-
» is displayed when the instrument is switched on: reading of the
.
AC
AUTO
4. DC AND AC VOLTAGES
for the rms value (See § 3)
for the maximum value
for display backlighting
key: reading of AC plus the DC component, of
: measurement of V
: measuremet of V
: measurement of V
Do not perform measurements < 200 V
Do not perform measurements for frequencies
> 500 Hz
17
AC
+ V
AC
DC
DC
» represents the true rms value
(1)