Adjustment and Verification
Routine Adjustment
6
Set Cal Due Date
1. Press the
CAL key and select Quit.
2. From the
CAL DUE ? menu use the keypad to key in the adjustment due date. Up to
eight characters may be entered in any format. Any character available from the
keypad may be used, but it is recommended that one of the common date formats
such as dd.mm.yy or mm.dd.yy is used for ease of interpretation.
3. Press
ENTER to store the CAL Due Date and exit from Calibration mode.
Non-Volatile Input Offset Adjustment
Use the following procedure to perform non-volatile input offset adjustment on all DCV
and resistance ranges (including LoI, 2-wire, and 4-wire) for the front and rear inputs.
Initial Setup and Connections
1. Press the
CAL key and select Quit.
2. From the
CAL DUE ? menu select Quit.
3. The instrument will exit from
CAL mode, the CAL legend on the main display will
extinguish, and the right-hand display will revert to the currently selected function
menu.
4. Disconnect all leads and connect a 8508-7000K precision 4-wire short device to the
front input terminals and also, if fitted, to the rear input terminals as shown above.
5. On 8508A select
CLEAR, and select Pwr Up Dflt.
6-33
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