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I am looking for a ISA or PC/104 card that has 16 to 20 bit resolution for a strain gage or just a +-10VDC signal. Speed needs to be at least 50 samples per second for three channels.
I have several questions:
1. Is it feasible to have > 16bit res for such a small signal source. Each bit would be way under 1 microvolt. It seems that noise would be a limiting factor.
2. Is it generally useful or legitimate to use averaging to increase my effective resolution? Can I get 20 bits from 16 by averaging?
3. Can anyone suggest a good quality analog input card for PC/104 or ISA bus?
Thanks,
Bill Sturm
I have several questions:
1. Is it feasible to have > 16bit res for such a small signal source. Each bit would be way under 1 microvolt. It seems that noise would be a limiting factor.
2. Is it generally useful or legitimate to use averaging to increase my effective resolution? Can I get 20 bits from 16 by averaging?
3. Can anyone suggest a good quality analog input card for PC/104 or ISA bus?
Thanks,
Bill Sturm