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Calibration Constants and Non-Volatile Memory
The accuracy of a channel output depends upon a number of calibration constants. Calibration constants are stored in two locations within the module; in
When the module is used with the SCPI driver, the RAM constants are loaded from the
The adjustment procedures shown in this appendix demonstrate both methods of writing calibration constants.
Equipment Required
The following equipment is recommended for calibration and adjustment.
Key specifications are listed to allow for equipment substitutions.
Model | Requirements |
|
|
Digital Multimeter (DMM) | Voltage measurements to ±16.8 V |
51¤2 or 61¤2 digit | |
| from 50 W to 500 W |
Making Connections
All adjustment can be performed using the CAL output terminals. The CAL output terminals provide one set of connections for both voltage and current adjustment.
Optionally, you can also perform the adjustment at each channel output (to include the output relay contacts in the path). Before beginning adjustment procedures, you must send the DIAGnostic:CALibration:OUTPut CHANnel command to set the adjustment point at the channels instead of the CAL output terminals. Adjustment at each channel output will require individual connections. You must make a
155 Voltage/Current Output Adjustment | Appendix D |