Chauvin Arnoux C.A 742 Notice De Fonctionnement page 28

2.3. CONTINUITY DETECTION
Connect the red test probe to the + terminal and the black
lead to the COM terminal.
Keep your hands behind the guards of the device and of
the test probe.
If the device has been left unused for more than 10 minutes
or has been set to standby, first perform a SELF-TEST in
order to switch it to hot standby.
Place the test probes on the element to be tested and main-
tain a firm contact.
Ω
Keep the
If no voltage is detected, the C.A 742 performs a continu-
ity test.
„ If the resistance is below the continuity threshold, indica-
tors 12 to 230 flash one after another. The device emits a
continuous audible signal.
„ If the resistance is above the continuity threshold, the
device displays nothing and does not emit a sound.
2.4. PHASE DETECTION
The C.A 742 performs a unipolar phase detection. This means
that connecting a single test probe is enough to determine
whether a phase is present.
To operate correctly, the phase detection function must be
used on networks referred to earth.
It can be used, for example, to locate the phase on an outlet.
Connect the red test probe to the + terminal
Keep your hands behind the guards of the device
Place the test probes on the element to be tested and main-
tain a firm contact.
R
button pressed.
+
600V
CAT IV
50
24
12
COM
400
230
127
Ω
+
V
AC
DC
28

690 AC
750 DC
Ph
ELV
-