Dc Voltage Measurement; Resistance Measurement And Continuity Test - Conrad Electronic VC630 Bedienungsanleitung

5.2 DC voltage measurement

For measurement of DC voltages up to 1000 VDC max. proceed as fol-
lows:
a) Switch on the measuring instrument. The initial configuration is
always AC voltage measurement in "AUTO" (automatic range selec-
tion) mode. Now press the "AC/DC" button once. The measuring
instrument switches to DC voltage, recognisable when the symbol
"AC" under "AUTO" disappears.
b) Connect the black test lead to the "COM" measuring instrument
socket and the red test lead to the „V•½•Hz•Logic•->I-" socket
c) The bar graph beneath the measured value is active during mea-
surement, being similar to an analogue indicator with a faster reac-
tion time. The bar graph operates as a trend indicator.
d) Connect the test probes to the object to be measured.
Attention!
Should the range be exceeded (> 1000 VDC) an acoustic warning signal
(interrupted tone) sounds. Never exceed the maximum input level!
When a "-" appears in front of the DC voltage measured value, the mea-
sured voltage is negative (or the test leads are reversed).
Note!
1. During DC voltage measurement in addition to the measured value
only the bar graph is visible. None of the sub-displays is active. Note
also the following illustration.
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AUTO
2. Selectable special functions
The following sub-functions, according to the model of multimeter,
are selectable by means of the "ENTER MENU" button:
"Æ%" reference value measurements, "MIN/MAX" value capture,
"TIME", "REC" record measured value, "RCLL" recall measured value,
"LMT" comparison function (VC 670 only) and "PH" peak value hold
(VC 650 and VC 670 only). These sub-functions are described in more
detail from Section 5.12..

5.3 Resistance measurement and continuity test

Attention!
Ensure that all circuit components, circuits and assemblies and other
objects to be measured are completely voltage-free.
For the measurement of resistances up to 40 MOhm max. (VC 670 up to
400 MOhm max.) and (acoustic) continuity test up to 20 Ohm max., pro-
ceed as follows:
a) Switch the measuring instrument on. The initial configuration is
always AC voltage measurement in "AUTO" (automatic range selec-
tion) mode. Now press the „V•-I(-•½•->I-" button once. The measu-
ring instrument switches to resistance measurement, recognisable
through the Omega symbol at the bottom edge of the screen.
b) Connect the black test lead to the measuring instrument "COM"
socket and the red test lead to the „V••Hz•Logic•->I-" socket.
V
0 +10 +20 +30
VOLT
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