Signal Conditioning

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Undesired filtering on SCXI -1102C/1303

I have set-up a SCXI hardware system set up recently.
Chassis - SCXI 1000
Module - SCXI 1102C
Terminal block - SCXI 1303

Sensor measurement made thru these channels connected on the 1303 show some undesired filtering which may be due to some inbuilt filter which I do not know of. I have already changed the 10 Ohm resistors on the terminal block with the 10 M-Ohm resistors yet no improvement in the signal quality.
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Message 1 of 6
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Greetings,

On each channel, the SCXI-1102C has a three-pole lowpass filter witha 10 kHz cutoff frequency. Is this the filtering that you are seeing? If not, what "undersirable" filtering are you seeing?

Regards,
Anuj
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Message 2 of 6
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Maybe that is the filtering that I see. I do not have a frequency component over 100 Hz in my signal. So I dont really see how this filter can affect my signal. However, I am sure that the signal is filtered, maybe by this 3-pole filter or something else.
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Message 3 of 6
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How is your signal affected?
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Message 4 of 6
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I checked the signal on the scope and the signal has a noise of amplitude of about 0.24 mV. But after recording the signal thru the DAQ system, I do not see this amplitude. The signal is just a flat line.
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You may want to look at this:
http://digital.ni.com/public.nsf/websearch/383706DC2DF46BF386256D2D005812C1?OpenDocument

How are you wiring things up and setting things up in MAX? What else have you tried?
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Message 6 of 6
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