9
If the voltage is > 30V, the instrument displays
, indicating
that the voltage is dangerous.
As default, the instrument is in automatic mode (
SCAN
). If the
voltage is AC, the instrument displays AC. If the voltage is
DC, it indicates DC and displays its polarity.
The
Select
key is used to exit from the automatic mode (the
SCAN
symbol disappears) and display the AC voltage only, or
the DC voltage only, or to return to the automatic mode.
To determine the type of voltage (AC or DC) for a measure-
ment < 1V, exit from the automatic mode.
Do not use the C.A 755 to check for the absence of a
voltage. For that, use a VAT.
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
Ω
.
Keep your hands behind the guards of the device and of
the test probe.
Place the test probes on the element to be tested. If a
voltage is present, the instrument so indicates.
The voltage is displayed.
SCAN
+
COM
Select
R
Do not make a resistance, diode, continuity, or capac-
itance measurement on a live circuit.
As default, the instrument is in automatic mode (
SCAN
) and
chooses automatically among the resistance
, continui-
ty
, diode
, and capacitance
functions. To force
one of these functions, press the
Select
key (the
SCAN
symbol disappears).
