What is the AI Channel to Channel sample delay in the 8215 for a multichannel scan?

[kfc]

I'm trying to figure out the delay between the samples without applying a reference or calibration waveform to the inputs.  I can't find any documention that details the relative delay between channel sampled data.  I want to post process the channels and a critical piece is this phase shift.  When I look at the data in the LVM output file, the timestamp for all channels that are sampled are the same.  I know that there is only 1 ADC in there (unless i am mistaken) so i'm missing something.

Thanks!

-Kory

[Seth_B.]

If you are referring to the NI 9215, this is a simultaneously sampled module.  The analog input circuitry is designed to sample all four channels at the same time, instead of multiplexing between channels like a non-simultaneously sampled module.  Thus, when a sample clock pulse is received by the module, all four channels start sampling immediately.  As a result, the sample delay between channels is on the order of nanoseconds and shouldn't affect your post processing.