NI 9263 dc offset

[gryder]

Hi

I am a researcher in Ireland working on the development of a biosensor.

This bio-sensor requires an ac constant current input.

We are currently using the NI9263 with the cDAQ system programmed using LabView.

However the constant current signal output from the NI9263 has a DC offset which we seem unable to remove.

Does anyone have a suggestion for how to remove the DC Offset (I would like to output a sine wave of 20uA and up to 10kHz centred around the zero Amp axis).

We are fairly new to LabView and NI kit so any suggestions of books or other resources that would help us get up to speed would be more than welcome.

Hope you can help

Gerry 

[Ymahardh]

Hi Gery,

You may be interested to see this link:

http://digital.ni.com/public.nsf/allkb/C1F39233BD94F2F08625736B00593E22

You can follow the VI mentioned in above link to remove DC offset programatically by using LabVIEW.

Regards

Yasrof 

[Nisar F]

Hello Gerry,

I hope you are doing fine.Please let me know Yasruf suggestion helped ? Otherwise we can look into it.

Best regards,

[gryder]

Thank you both very much I will try the solution proposed,

I will let you know how it goes

Gerry

Message Edited by gryder on 11-26-2008 02:28 PM