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Putting into Operation
If the factory settings, such as the coarse measuring range, are retained the
operation is limited to the following points:
3.1 Select Measuring Range
With the factory setting measuring range 1 ("80 mV/V) is always switched
on. Measuring range 2 (calibration at "8 mV/V) can be selected either inter-
nally via DIP switch 24/4 or externally by closing a single-pole change-over
switch to pin 25c against operating voltage zero (see chapter 4.2).
3.2 Bridge Zero Balancing
Carry out bridge zero balancing by means of the screwdriver potentiometers
P23 (fine) and switches S22 (coarse) and S23 (polarity) (see also chapter
4.4).
3.3 MR Fine Adjustment
The fine adjustment of the measuring range is made seperately for both
ranges by means of the screwdriver potentiometers P21 (measuring range 1)
and P22 (measuring range 2). The potentiometers in the front panel permit
corrections of approx. 35 % (related to the set measuring range). As far as
measuring range 1 is concerned, the fine adjustment is also possible via an
external potentiometer (for this see chapter 4.3).
NOTE
P22 must not be altered in order not to detune the manufacturer's setting
(MR2 "8 mV/V) (see chapter 4.5).
HBM
ME50
A0765−3.0 en/de/fr
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