ICP DAS USA PCI-1202 Series Hardware User Manual page 85

Limitation
The system will interrupt the driver software under Windows 95/NT. The partial function
of D/A arbitrary waveform generation is implemented by software. Therefore the D/A output
waveform will be distorted sometimes. Refer to Figure 5-5 for details.
If the user has to generate the periodic wave form such as sin, cos ..., and the analysis is
similar to spectrum analysis, this type of output distortion will cause little trouble. The D/A
output maybe distorted but spectrum response is still stable.
If the user uses DOS, the D/A output waveform will not be distorted in any time.
Figure 5-5: The D/A waveform is distorted but the spectrum response is nearly the same.
PCI-1202/1602/1800/1802 Hardware User's Manual
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