HSDC Pro Capture inverted signal by TSW1400EVM with AFE5851EVM

Jhin Ci Hong

Other Parts Discussed in Thread: AFE5851EVM, AFE5851

Hi,

I am using TSW1400EVm and AFE5851EVM to capture data and implement our system.

But I found that the capture data captured by HSDC Pro would be the inverted input signal.

This is input signal.

And This is the image from HSDC Pro.

Is it normal?
or there would be some error in it?

Our settings in AFE5851EVM GUI are:

Init for TSW1250 -> LSB first -> VCA DC coupling(because our input signal is 100k Hz, AC coupling would have a big gain.)

Kind regards,

JhinCi

e-mail:
JhinCiHong19901008HY@gmail.com

0 Amy Schnoor over 8 years ago

Jhin,

I'm assigning your post to the appropriate apps engineer. He should respond soon.

0 Chen Kung over 8 years ago

Hi Jhin,

How are you?

Yes, we are testing and checking

and we will verify it and reply to you very soon.

Thank you!

Best regards,

Chen

0 Chen Kung over 8 years ago in reply to Chen Kung

Hi Jhin,

Yes, we tested with a input waveform and captured and checked the output signal.

We can see the same inverted waveform as you mentioned.

Please look at the AFE5851 data sheet page 16 as below.

as you can see the signal will be inverted by using VCA in front of ADC.

Thank you!

Best regards,

Chen

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