AWR1642: The problem of AWR1642 sampling

Xiao Du

Intellectual 410 points

Part Number: AWR1642

Here are my parameters（on SDK2.00.00.04）

there is a problem when I try it , data from rx1 and rx2 are not aligned, were like that

but rx3 and rx4 are correct

over 5 years ago

0 Jitendra Gupta over 5 years ago

TI__Guru 69960 points

Hi Anist,

Do you same behavior even on a higher sampling rate?

Or with this fixed-configuration only issue is observed?

Regards,

Jitendra

0 Xiao Du over 5 years ago in reply to Jitendra Gupta

Intellectual 410 points

Hi Jitendra

Higher sampling rates ( 6.25M) have the same result . By the way , if start frequency = 76Ghz , the data is normal , but its wrong when start frequency = 78Ghz

0 Vivek Dham over 5 years ago in reply to Xiao Du

TI__Guru 58035 points

Hello ,

Are you using complex sampling mode or real only sampling mode? In the plot above are you plotting the I data or the Q data? Incase of complex sampling the phase needs to be analyzed by using both I and Q data, not one of them.

Regards,

Vivek

0 Xiao Du over 5 years ago in reply to Vivek Dham

Intellectual 410 points

I’m using complex sampling mode，the data what I've ploted is I and Q.

0 Vivek Dham over 5 years ago in reply to Xiao Du

TI__Guru 58035 points

Am sorry, I see only one plot for each Rx. How are you plotting both I and Q? Also is the main object you are observing present at zero deg angle ?

Regards,

Vivek

0 Vivek Dham over 5 years ago in reply to Vivek Dham

TI__Guru 58035 points

Hello Anist,

Any update on this?

regards,

vivek

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AWR1642: The problem of AWR1642 sampling