What is the minimum Interchannel delay for Interval Scanning in DAQCard 6062E?

[Geeth]

I am trying to determine if a DAQ Card 6062E can be used to sample 10 channels each at 250 KSamples/sec. The gain is the same on all the channels and the output impedance of all the signals are low.

Is it possible to do this using the Interval Scanning method? If yes, how do I determine the mimimum interchannel delay? Can the data for all the channels at this rate be streamed to disk without losing any data?

Also, I do not understand the multiple channel scanning rate specification of the DAQCard-AI-16E-4 (250kS/s multichannel sampling rate). Can you please clarify if this card can be used for my application?

Regards,
Geeth

[Sastry V.]

Hello,

Please take a look at the following link:

http://sine.ni.com/apps/we/nioc.vp?lang=US&cid=4371

The maximum sampling rate for DAQCARD-6062e is 500KS/s. Since the channels are multiplexed, the maximum sampling rate that you can achieve when you are doing acquisition on N channels is (500/N) ksamples/s.

Regarding the DAQCard-AI-16E-4, yes you would assume that usually if you are doing acquisition on 1 channel, you can get maximum sampling rate of 250 kS/s. But actually for this particular card, if you are doing acquisition on only one channel, you can achieve 500kS/s. But if you are performing acquisition on multiple channels, you can achieve maximum 250/N kS/s.

For information on interchannel delay, I would recommend you to take a look at t
he support page I am linking.

Keywords Search: interchannel delay

Sincerely,
Sastry V
Applications Engineer
National Instruments

Message Edited by Molly K on 02-19-2005 12:03 AM