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NI 5732 voltage input range

Hello there,

I was acquiring voltage input of AI on  NI 5732 and the signal was properly read.However,something went wrong.

As you can see on the picture below,the input range is around ±0.45V. Here the voltage input range is ±0.5V, and part of it seems trimmed.  

76acec3689ba1f257b74c80ca74c75f.png

According to https://docs-be.ni.com/bundle/ni-5731-5732-5733-5734-seri/raw/resource/enus/375653a.pdf,changing gain might solve this problem, but it never works.

lovlex123_1-1701065415181.png

Here the VI was customized from  NI 5732 Getting Started.vi The change was because the signal I want to acquire was below 8kHz, with default AC coupling the signal is wrong.

Here are my questions:

1.Is there a way to change the input voltage range of NI 5732?

2.The output of Scale Size.vi is wrong, how could I fix that?

lovlex123_2-1701065597180.png

 

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