How to achieve low sample rate with AD9361 ?

Please post your question in AD9361 design support forum as below:

 Design Support AD9361/AD9363/AD9364  

The minimum sample rate that is supported by AD9361 is 520Ksps, and hence you need to interpolate the input rate from 64Ksps to more than 520Ksps in to use it with AD9361.

What is the error that you are seeing when you are generating filter with minimum sample rate? Share with us the snippet of the error. Also, if you increase the sampling rate , are you able to generate the filter and use that in your setup?

Please post your question in AD9361 design support forum as below:

 Design Support AD9361/AD9363/AD9364  

The minimum sample rate that is supported by AD9361 is 520Ksps, and hence you need to interpolate the input rate from 64Ksps to more than 520Ksps in to use it with AD9361.

What is the error that you are seeing when you are generating filter with minimum sample rate? Share with us the snippet of the error. Also, if you increase the sampling rate , are you able to generate the filter and use that in your setup?

 srimoyi  thanks for the quick response.

I will  move this question to Ad9361 design support.

In ADI filter design, export coefficient option is disabled. Unable to generate coefficients.

And what exactly need to be done in NO-OS software if we can able to design filter in MATLAB?

Can you elaborate please

Have you pressed the design filter tab in the GUI? The save coefficients tab will get enabled after that.

Refer to the below link for the steps:

https://wiki.analog.com/resources/eval/user-guides/ad-fmcomms2-ebz/software/filters 

i can able to generate coefficients now

both TX and RX has to be designed then only we can able to generate  coefficients.

i have got .ftr file and corresponding C file with ftr structures .

what exactly i need to do in SDK?

replacing tx_fir and rx_fir structures in main with exported structure is sufficient ?

Sorry for the confusion. Please ignore the previous post.

You can generate the coefficients in no-os format from filter wizard GUI and then load the RX and TX  coefficients into the AD9361_RXFIRConfig and  AD9361_TXFirConfig structure.

thank you srimoyi  it worked but can able to reach up to 544ksps instead 512ksps.

The minimum sample rate supported is 520Ksps  and not 512Ksps and you should be able to initialize with that. Please try with the lowest 520Ksps sample rate and if you are not able to initialize, share the  filter file in .ftr format and the error message that you see.