GW Instek GDM–825 A Series, Adjustment Procedure

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Adjustment Procedure (Manual procedure)
Model no.
GDM
–825XA
Document No. TO
– XX -XXX
Page 1 of
NO. Item Condition
Step 4 END
1. After adjustment is complete, take out the Calibration Key
(GDM-01) from the CAL Key Port and reset the power switch.
Appendix 1 CAL CODE
CAL CODE
Connection/
Function
8255A 8251A Remark
Please refer to appendix 2 for 4WR connection
1 4WR 0R 0R
It is necessary to use 4 wire
resistance measurement to
compensate for EMF. Wait for 60
seconds before starting adjustment
3 4WR 100R 100R
4 4WR 1KR 1KR
5 4WR 10KR 10KR
6 4WR 100KR 100KR
7 4WR 1MR 1MR
8 4WR 10MR 10MR
Please refer to appendix 3 for 2WR connection
9 2WR 2W100MR 100MR
Remove all inputs from the terminals
2 OPEN OPEN OPEN
Use the INPUT V and the COM terminal for DCV or ACV calibration.
11 DCV 0V 0V
12 DCV 190mV 100mV
13 DCV -190mV -100mV
14 DCV 1.9V 1V
15 DCV 19V 10V
16 DCV 190V 100V
17 DCV 750V 750V
61 ACV 19mV 19mV 1kHz
62 ACV 190mV 100mV 1kHz
63 ACV 1.9V 1V 1kHz
64 ACV 19V 10V 1kHz
65 ACV 190V 100V 1kHz