Measurement Functions; Ac/Dc Voltage; Insulation Measurement - AEMC 1050 User Manual

2.6 Measurement Functions

2.6.1

AC/DC Voltage

• Select any measurement position with the rotary selector switch.
• The instrument is automatically in AC/DC voltage measurement mode.
• The voltage is continuously measured and is shown on the small dis-
play.
Measurement is prohibited if an external voltage is present at the terminals
before pressing START/STOP. Similarly, if an interference voltage is detected
during measurement, the measurement is stopped and that voltage is indi-
cated.
2.6.2

Insulation Measurement

As soon as one of the MΩ positions has been selected, the main display shows
"- - - - MΩ", and the small display indicates the voltage present at the device's "+"
and "–" terminals.
If the external voltage present at the device's terminals exceeds 25V
pressing the yellow START/STOP button does not bring about insulation mea-
surement, but instead triggers an audible signal. The
seconds, then the device goes back to automatic voltage measurement.
If the external voltage present at the device terminals is below 25V
insulation measurement can proceed.
P ressing START immediately begins the measurement. The measurement value
is displayed on the main digital display and on the bargraph. An audible beep is
given out every 10 seconds to indicate that measurement is in progress.
If the test voltage is considered to be dangerous (>120V), the
displayed. If, during insulation measurement, an external voltage >25V
35V is detected, the measurement is stopped as long as the voltage is applied
DC
to the instrument. The
the small digital display.
If the measurements fluctuate greatly, the SMOOTH function can be enabled (see
§ 2.5.5).
By pressing the V/TIME button during measurement, you can alternate between
displaying the duration of the voltage measurement and the exact voltage gener-
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ated on the small display (see § 2.5.2).
22
symbol flashes and the voltage value is indicated on
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,
AC/DC
, then
AC/DC
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±3V or
AC