NI 9201 signals getting affected

[falcon98]

Hi,

I am using NI 9201 AI module with my 9073 cRIO in scan mode for acquiring 2 signals from power supply. I am facing a peculiar issue. Whenever the signal in first channel rises , it affects the signals in other channels. I have observed an offset of 0.5 v and this ofset rises when the signal in forst channel rises.

I tried isolating the signals using isolations modules but still the signals are getting affected. Is there any way to solve this issue ?

Thanks,

falcon

[ben64]

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@falcon98 wrote:

Hi,

I am using NI 9201 AI module with my 9073 cRIO in scan mode for acquiring 2 signals from power supply. I am facing a peculiar issue. Whenever the signal in first channel rises , it affects the signals in other channels. I have observed an offset of 0.5 v and this ofset rises when the signal in forst channel rises.

I tried isolating the signals using isolations modules but still the signals are getting affected. Is there any way to solve this issue ?

Thanks,

falcon

---

Without more details on the setup and the connections we can only guess. It might be a grounding issue.

Ben64

[natasftw]

http://digital.ni.com/public.nsf/allkb/73CB0FB296814E2286256FFD00028DDF

Are you using the other channels or just noticing the behavior?

[suryas]

Hi!

I am using 9201 along with cRIO 9075 I need to check the working of 9201. I gave 3 voltage from the Function generator to 9201 but i am not able to get that 3 v in labview the value is random. Can anyone help me with this

Thanks,

Surya S