Model 302
24-bit USB Data
Acquisition System
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The A/D converts constantly at the selected rate. That rate determines the frequency response of the converter. Rates from 50 to 1000 Hz are supported. There is a low-pass filter intrinsic to the conversion process. The cut-off frequency of that filter is the data rate times 0.262. For maximum effective resolution use the lowest data rate that meets your needs. For rates lower than 50 Hz, average in the application, or discard the extra data. Note that 1/rate must be an integer multiple of the A/D's clock period. Therefore, the actual rate selected and displayed may be slightly different than the rate you enter.

The application can keep a running average of number of consecutive conversions. The Model 302 is specified with the running average set to four.

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