can the myDAQ log data at 200kHz?

[GriffDanPhill]

Hi all,

The specs of the myDAQ say that it can sample at 200kHz and that it has an analogue input buffer size of around 4000bits - how quickly do the contents of this buffer get transferred into the memory of the host computer? Can you actually practically log at 200kHz or will the buffer overflow?

Thanks in advance,

Dan

[hicksc · Accepted solution]

Hi Dan

Sorry for the delay in responding to your question.

Yes the myDAQ can sample and transfer data at 200kHz. The myDAQ is a 16-bit device, so at 200kHz we'd be generating 3200000b/s of data. Even if we double this to 32 bits to account for any overhead in transferring the data we're still only considering ~0.8MB/s of data transfer from the device so that the buffer never overflows. 

The USB 2.0 standard defines an effective throughput up to 35 MB/s making this very possible.

Kind Regards

[GriffDanPhill]

No worries.

Thanks very much Chris!

Regards,

Dan