error 20315

[P-Y]

Hi,

I need to smooth an analogue input signal using both the 'Basic DC/RMS' and 'Filter' VIs. Data acquisition is triggered by an external device using a TTL pulse, but between TTLs (when no signal is being acquired) both the 'Basic DC/RMS' and 'Filter' VIs return the error 20315 - "The waveform dt parameter is <= 0".

Is it possible to overcome this and, if so, how?

Many thanks in advance,

P-Y.

[JamesC]

Hi P-Y,

Please can you post a code snippet to show the issue you are seeing, as the Basic RMS function should not operate without data, and the DAQmx Read should always send back valid data, or wait for data and prevent the RMS function from running.

Regards
JamesC
NIUK and Ireland

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