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If the selection is N (no), measure the reference voltage as instructed between TP6
and TP8 (ground) on the analog instrument board and enter the measured value. To
access these points it is necessary to remove the top cover, refer to Figure 5-1. Once
this voltage value is entered and [ENTER] pressed the High Voltage (100V) will be
turned on immediately.
If Y (yes) is selected the High Voltage (100V) will be turned on immediately.
3. Proceed to measure the voltages in each case as instructed, enter the values and press
[ENTER] to continue each time. Two measurements will be made at levels of 100
and 1000V and one at 10V.
4. Short the input + and - terminals to the instrument as instructed and press [START].
5. Enter the precise known value of the 1 Mohm standard and again press [ENTER].
6. Remove the short and connect the standard between the + and - terminals.
7. When [START] is pressed a calibration measurement is made on the standard which
takes approximately 25 seconds.
8. Once the standard is removed and [START] pressed again a RANGE CALIBRATION
is performed which takes approximately 45 seconds.
9. Press [START], HIGH VOLTAGE IS STILL APPLIED , to initiate the ZERO
CALIBRATION which takes approximately 75 seconds.
10. Once zero calibration is complete if the time and date are correct as displayed answer
Y (yes) to store the calibration data. If they are not correct press N (no) to change
date and time as instructed. To prevent the calibration from being changed by
mistake the instrument requests final confirmation before the data is saved. Once this
is complete and [MENU] selected the calibration is COMPLETE.
Service & Calibration
Page 87 of 87
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