Resistance, Continuity, Diode And Capacitance; Non-Contact Voltage Detection (Ncv) - Chauvin Arnoux C.A 755 Notice De Fonctionnement

2.3. RESISTANCE, CONTINUITY, DIODE AND
CAPACITANCE
„ Connect the red probe tip to the + terminal and the black
probe tip to the COM terminal.
„ Set the switch to W.
„ Keep your hands behind the guards of the device and of
the test probe.
„ Place the test probes on the element to be tested (Figure
12). If a voltage is present, the instrument so indicates.
Do not make a resistance, diode, continuity, or capac-
itance measurement on a live circuit.
As default, the instrument is in automatic mode (
chooses automatically among the resistance
ty , diode
one of these functions, press the Select key (the
symbol disappears).
Resistance and continuity
If the resistance is less than 300 W, the instrument is in con-
tinuity (Figure 11). Below 30 W, it emits a continuous beep.
Between 300 W and 3 MW, the instrument is in resistance
mode. Above 3 MW, the display unit indicates OL. The 30 MW
range is not available in automatic mode; resistance mode
must be used.
Diode
„ In diode test, place the red probe tip on the anode of the
diode to be tested and the black probe tip on the cathode.
„ The instrument indicates the voltage of the diode. If it
is above 2V or if the polarity is reversed, the instrument
displays - - - -.
Capacitance
The 3mF and 30mF ranges are not available in automatic
mode; capacitance mode
If the device displays dis.C after a measurement, wait for
the end of automatic discharging of the capacitance before
making another measurement.
2.4. NON-CONTACT VOLTAGE DETECTION
(NCV)
The instrument can detect an AC voltage of approximately
230V.
„ Withdraw the probe tips.
„ Set the switch to NCV.
„ Move the top of the instrument (+ terminal side) close to the
conductor without touching it. The position of the instrument
may affect the result. The sensitivity is better on the battery
compartment cap side (Figure 15).
If no alternating voltage is detected, the device displays EF.
, and capacitance
must be used.
20
SCAN
, continui-
functions. To force
) and
SCAN