This device is a detector. The indications it provides must
not be used for measurement purposes.
2.1. SELF-TEST
Before using the C.A 742, perform a self-test. This checks the
integrity of the leads, the proper operation of the electronic
circuit, and the battery voltage.
Connect the red test probe to the + terminal and the black
lead to the COM terminal.
Touch the 2 test probes together and press the AUTO TEST
button. Press for as long as necessary.
If all of the indicators of the device except ELV light and
the audible signal sounds, the device is working properly
and can be used.
If every other indicator lights, the batteries must be replaced
(see §4.2).
2. USE
+
600V
CAT IV
230
127
50
24
V
AC
DC
12
+
600V
CAT IV
230
127
50
24
V
AC
DC
12
25
COM
690 AC
400
750 DC
Ph
Ω
ELV
+
-
COM
690 AC
400
750 DC
Ph
Ω
ELV
+
-