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Appendix D
Voltage/Current Output Adjustment
Using This Appendix
This appendix describes adjustment procedures. The procedures in this
appendix are intended for qualified service personnel.
Adjustment procedures are a part of calibration procedures. Calibration
involves functional testing, performance testing, adjustment, and verification
testing. These procedures are given in the HP E1418A 8/16-Channel DAC
Service Manual.
To maintain the output accuracy shown in Appendix A (see page 111),
adjustment should be performed at 90 day intervals. Hewlett-Packard can
perform calibration and adjustment for you. Contact the nearest
Hewlett-Packard Sales and Service Office for additional information.
The HP E1418A Specifications (Appendix A) require that the operation
temperature is within ±5°C of the calibration temperature. The module
temperature is affected by both the ambient temperature and the cooling
performance of the mainframe. Because VXI mainframes have
significantly different cooling capabilities, the most accurate calibration is
achieved when the Output Adjustment is performed with the module in the
same environment and mainframe as it will be operating in.
Adjustment may be performed at more frequent intervals, if required.
T
he
module can be adjusted for use without changing the permanent calibration
settings.
Adjustments are performed electronically. There are no mechanical
adjustments in the module.
Appendix D Voltage/Current Output Adjustment 154