Digi-Check 5.2 04.12.2003 15:02 Uhr Seite 16
Voltage measurement
y In addition to the display val-
ue, the presence of a test
y The tester must be switched
voltage > 5 V is also indicat-
on at the "ON/MODE" button
ed by the voltage indicator
to measure voltages < 5 V.
(LED).
y For DC measurements, the
y In addition to the digital volt-
test probe on the display
age display, the test voltage
handle represents the posi-
level is indicated by individual
tive pole, and the small test
bar graph symbols
probe the negative pole.
(Range 1: 0–24 V;
y The voltage type (direct/alter-
range 2: 24–690 V)
nating) is automatically identi-
fied and indicated on the dis-
play (DC/AC).
y The polarity (+/–) is also
automatically identified and
displayed.
Measuring AC voltages
1. Apply the test probe to the
Measuring frequency
potential points you wish to
(voltage > 4 V AC)
test.
If the "ON/MODE" button is
2. The measured voltage value
pressed while measuring an AC
and the initials of the voltage
voltage > 4 V, the display will
type (AC) will be displayed.
show the frequency of the test
voltage. No bar graph will be
shown during frequency testing.
Measuring DC voltages
1. Apply the test probes to the
2. The measured voltage value,
potential points you wish to
the initials of the voltage type
test.
(DC) and the polarity (+/–)
will be displayed.
Phase sequence and phase testing
Warning: Phase/phase se-
quence testing cannot be per-
formed in unfavourable loca-
tions, e.g. on wooden-runged
ladders or insulating floor cover-
ings and in AC networks not
bonded to earth.
IMPORTANT: Phase or phase
sequence testing can only be
performed with the tester
switched on in the voltage
measurement mode and in AC
networks not bonded to earth.
Note: For reliable phase/phase
If the unit is incorrectly held, the
sequence testing, the thumb
phase/phase sequence will not
must be pressed against the top
be correctly identified.
face of the display unit handle.
16
correct
incorrect