VOLTCRAFT CC-421 Bedienungsanleitung Seite 32

example, the so-called (digital) panel meters with a maximum input
voltage of "+" or "-" 199.9 mV can thus be calibrated relatively easi-
ly. Proceed as follows:
a) Connect the connecting cable (flat side of the plug housing down)
with the current calibrator which is turned off. Make sure that the
connection is tightly made.
b) Set the "FUNCTION" switch to "VOLTAGE SOURCE" and the
helipot "CAL.ADJUST" to the leftmost position.
c) Set the "POWER" switch to "I" to turn the current calibrator on.
Following a very short initialization period, the measuring device
is ready to operate.
d) A negative ("-") or positive ("+") voltage is now indicated by the
current calibrator. Set the desired output voltage by turning the
CAL-ADJUST knob to the right, e.g. to 100.0 V. The value reading
is now applied at the output of the current calibrator.
e) Connect the alligator clips of the connecting cable either to a
panel meter (digital measurement components) or to the test pro-
bes of a multimeter (turned off) to be calibrated and set the multi-
meter to mVDC measurement.
f) Turn on the multimeter to be calibrated.
Maintenance, battery replacement,
setting up the calibrator
a General
To ensure the accuracy of the Current Calibrator CC – 142 for a long
time, it should be re-calibrated once a year. The battery and fuse
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