Different response across two channels in same adrv9009

I would start using the BIST functions explained here:

ADRV9009, ADRV9008 highly integrated, wideband RF transceiver Linux device driver [Analog Devices Wiki]

Frist try the BIST tone and see if you get a proper tone without distortion.

Then use the deframer -> framer loopback and check that you receive what you expect to send.

-Michael

Hi Michael ,

I have a customized board having the  8 ADRV9009 in it. I tried sending the bist_tone  to all 16 Tx channels  ,out of all the channels I am seeing the tone at respective  frequency .When the data is coming from the PL source ( It is a verilog written datagen module having the 100M bandwidth OFDM data ) and same data is being populated to all 16 channels.Sometimes I am seeing the 100MHz spectrum in 16 channels.When I am resetting  datagen module and setting it back , data is coming properly  till to the transport layer IP  of the ADRV9009. But in some of the channels ,I am getting the frequency response in 400MHz bandwidth. Why it's giving the random response for multiple runs ?

Can you check if you have lane errors using jesd_status?

I'm wondering if the 400MHz signal is just distorted and you see the cutoffs from the digital and analog filters.

Also try to use the framer loopback option to observe your TX data on RX

root@analog:/sys/kernel/debug/iio/iio:device3# echo 1 > bist_framer_a_loopback

-Michael