acquiring a sine wave of 1KHz riding on a DC and Detecting its peak value through compact rio

[Shivkumar]

Dear LabView Programmers,

We are trying to acquire a sine wave input through cRIO-9004 using I/O module cRIO-9215 which is a 16-bit ADC.

We are able to acquire sine wave below 100Hz faithfully but not higher frequencies, the higher frequencies(1Khz) get distorted. How to acquire this sine wave of 1Khz faithfully through the above mentioned hardware.

Regards

LabView Lovers  

[preston_johnson]

Using LabVIEW 8.0, you will need to place the data from the 9215 into a dmaFIFO buffer, such that you do not need to poll the 9215.  It is the polled or the interrupt process that reduces the sample rate. 

Hope this helps.