33
4-8 FREQUENCY MEASUREMENT
Under no circumstances may the two types of input (voltage and current)
be connected at the same time.
■
Frequency of current
- Same procedure as for current measurement in
AC mode, next press the Hz button.
NB
: No lead must be connected to the clamp.
■
Frequency of voltage
- Same procedure as for voltage measurement in
AC mode, next press the Hz button.
NB
: the clamp must not enclose any cable.
■
If necessary, use the secondary functions MIN/MAX, HOLD
NB
:
Levels of sensitivity
. For frequency of voltage, the RANGE button
allows manual selection of different levels of sensitivity.
10 mV is preselected on auto and 10 mV, 100 mV or 1 V on manual.
Each time RANGE is pressed: brief display of the sensitivity.
For the frequency on current, choose, with RANGE button, until to obtain
stability of display.
4-9 RESISTANCE MEASUREMENT
■
Set the switch to
Ω
■
Connect the red lead to the + terminal and the black lead to the COM terminal
and connect up to the terminals of the circuit to be tested.
■
If necessary, use the secondary functions MIN/MAX, RANGE, HOLD.
Never make a resistance measurement, continuity test, diode test, on
a live circuit.
4-10 CONTINUITY SOUND TEST
■
Same procedure as for resistance measurement, but with the switch on
Ω
■
If the resistance is less than 40
Ω
, the buzzer emits a continuous signal.
