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AD9361 data clock and feedback clock

Question asked by safeer on May 23, 2014
Latest reply on May 23, 2014 by tlili

Hi,

 

We are using AD9361 IC on our RF board for the implementation of a custom Wimax solution. We are able to transmit data from the RF board and we have verified it using a spectrum analyzer. But, we are unable to receive any data on the RF board. We suspect there might be an issue with the data/feedback clock. We have captured images of the data clock (channel 1 (yellow)) and feedback clock (channel 2 (green)) on an oscilloscope. Please find the images attached.

 

Feedback clock is derived from data clock by using a buffer on the FPGA. Baseband processing is implemented on the FPGA. Please let us know, if there is an issue which needs to be corrected with respect to data/feedback clock.

 

Thank you for your help

Regards,

Safeer

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