Omega DP24-E, Руководство пользователя

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4.4 CHANGING THE METER S CALIBRATION
CAUTION: It is not necessary to calibrate a brand new meter, it
arrives completely calibrated. The following procedure modifies
the calibration of the meter.
This procedure should only be performed by qualified personnel with
accurate test equipment.
To change the meter’s calibration, follow these steps:
Disconnect the main power from the meter.
1. Install jumper S4 to enable the calibration procedure (refer to Figure 3-3).
2. Slide the main board back into the case and replace the cover.
3. Power on the meter.
4. Select the input range you want to calibrate (refer to Section 4.1,
Selecting Input Range)
5. Press the MENU button until the meter flashes “LINE”. The meter will
indicate the line frequency it is currently using. Line frequency default is
60H for 60 Hz and 50H for 50 Hz.
6. Press the
¢
/TARE button until the correct line frequency shows.
7. Press the MENU button to store this line frequency selection. Once you
store your selection, the meter flashes “cAL”.
8. Press the
¢
/TARE button to initiate the calibration procedure. The
meter momentarily flashes the selected input range that you are about to
calibrate, then flashes “rd1” .
9. Apply 0 Vdc or 0 mA and change the display to “0000” . Use the
¢
/TARE and
£
/MAX buttons to change the digits.
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