Adjustment Procedure - Hameg HM8012 Handbuch

Adjustment procedure

1) Inject at the input of HM8012 the value
indicated for each step.
2) Press the BEEP (3) key. A value is then
displayed corresponding to the value without a
correction. Indicator (2) must light up.
3) Press the AUTO (16) key to calibrate. The
displayed value must be correct.
4) Press the key (13) to move to the next step
(pressing AUTO is a way of not changing steps
but of redisplaying the current step indication.
NOTES:
On each calibration step, it is possible to
check whether calibration is needed. To do
this, simply press the AUTO key without first
pressing the BEEP key. The value corrected
during the latest calibration is then displayed.
It is possible to do without the calibration if
the value is correct. Press the AUTO key a
second time to return to the menu or press
the or key to change step.
Although it is possible to perform some of
the steps separately, it is highly advisable to
carry out complete calibration of the
equipment.
When calibrating the resistor ranges, connect
the standard resistor as close as possible to
the input terminals.
34
List of calibration steps
(*) Wait for complete stabilization of the display.
Frequency compensation adjustment
This adjustment means opening up the unit. Turn
to the 50 V DC range. Apply 25 V DC / 15 kHz.
Adjust adjustable capacitor CV1 to obtain a display
of 25,000 ± 5 counts.
Subject change without notice