Voltage testing
Apply the test probes to
the potential points you
wish to test.
y For DC voltage testing, the
test probe on the display
handle represents the
positive pole, and the
small test probe the neg-
ative pole.
y The positive and the neg-
ative diode of the 6 V volt-
age step will light up
simultaneously for AC
voltage.
y The entire LED step dis-
play will briefly light up at
the start of each voltage
test.
Continuity testing
Before conducting a con-
tinuity test in electrical
systems, first switch off
external voltage sources
and, where applicable,
discharge capacitors.
Short the test probes and
keep button pressed.
Contact the test object
with the test probes.
Contact the test object
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The level of voltage pre-
sent is indicated by the
LED's lighting up as far as
the step level of voltage
present. An acoustic indi-
cation is also given for
Combi Check 1.2.
with the test probes. If
contact resistance is
< 500 kOhms, the +6 V
diode will light up.
An acoustic indication is also
given for Combi Check 1.2.
Impressed external voltages
will be indicated despite the
continuity test, and will not
harm the tester.
Semiconductor testing
When the button is pressed
during polarity-dependent
continuity testing, the internal
test voltage source is
switched to the test probes.
Phase testing
(Combi Check 1.2 only)
WARNING: Phase testing
cannot be performed in
unfavourable locations, e.g.
on ladders with wooden
rungs or in rooms with insu-
lated floor coverings and in
AC voltage systems not
properly bonded to earth.
y To perform the phase test,
contact the small test
probe with the phase
(> 90 V AC) of the AC
voltage system and touch
the phase tester contact
on the indicator handle
with your thumb. The 6 V
step indicator (+ and –)
will light up upon phase
contact and an acoustic
signal is also given.
The display handle repre-
sents the positive pole, and
the small handle the negative
pole. If continuity is given, the
+6 V diode illuminates. An
acoustic indication is also
given for Combi Check 1.2.
correct
incorrect
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