AXIOMTEK DASP-52282, Руководство пользователя

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DASP-52282 Card User’s Manual
Calibration
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C h a p t e r 5
Calibration
5.1 Calibration VR Description
There are ten variable resistors (VR) on the DASP-52282 to
adjust the A/D and D/A channels. A precision voltmeter with 4 1/2
digits should be used to take an accurate voltage reference. A
calibration program can be found on the DASP-52282 software
disk to perform the calibration steps. It is strongly recommended
to warm up the computer 30 minute before performing calibration.
Locations of individual VR are shown in Chapter 2. The
corresponding VR’s function is depicted as below.
VR Number Description
VR1 Reserved
VR2
ADC Analog Input Span Adjustment
VR3 ADC Bipolar Analog Input Offset Adjustment
VR4 ADC Unipolar Analog Input Offset Adjustment
VR5 DAC Channel 1 Bipolar Offset Adjustment
VR6 DAC Channel 1 Unipolar Offset Adjustment
VR7 DAC Channel 2 Unipolar Offset Adjustment
VR8 DAC Channel 2 Bipolar Offset Adjustment
VR9 DAC Channel 1 Span Adjustment
VR10 DAC Channel 2 Span Adjustment