Slow data acquisition in Excel

 
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G.H.Stephenson
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PostPosted: Wed Nov 12, 2003 4:03 pm    Post subject: Slow data acquisition in Excel Reply with quote
Hi, I have setup a DAC16 to run in an excell macro, using all 8 channels, and a userform full of graphs. But for some reason it takes 6 seconds to detect there has been a change by the inputs, and only seems to sample evry 2 seconds. Can you help me?
I can e-mail the program to you if it is any help
Thanks
Graham
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markspencer
Site Admin
Site Admin


Joined: 07 May 2003
Posts: 610

PostPosted: Thu Nov 13, 2003 8:54 am    Post subject: Reply with quote
Hi,

I would recommend that you use the function get_cycle, this will let you know when it has a converstion for each of the active channels.

If you are using filtering then this will also increase the amount of time to get a signal.

The ADC-16's sample rate is 1 sample every 1.5 seconds when running at 16 bits this can be sped up if the resolution is reduced.

Best regards,
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G.H.Stephenson
Guest
PostPosted: Thu Nov 13, 2003 12:29 pm    Post subject: Reply with quote
Thankyou, I changed to resolution to 14bits, just took a while to figure out why it was giving me wored results, but i have sortred it now,
Thanks
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