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pay attention important !!!!!!!

Question asked by xiecongshuaige on Sep 21, 2017
Latest reply on Sep 26, 2017 by xiecongshuaige

Hi!

    We use the no-os API for Zedboard+FMCOMMS2,and it's successfully operation.under this condition we use DDS  in LVDS mode and 1R1Tmode to test the rx path and tx path.everything is succeed.and the wave is like the first picture.

    But when we use the same no-os API for our own PCB board ,use DDS in COMS mode and 1R1T mode,there is a

"ad9361 spi32766.0: ad9361_dig_tune: Tuning TX FAILED!" error . And we change the value of "digital_interface_tune_skip_mode = <1>". The initialization is succeed.but the test of tx path and rx path is not successful,the wave is like below:

We can't receive what we transmit,and we define the PICOZED_SDR_CMOS in config.h to change the lvds mode to CMOS mode.

    Can anybody tell me what will cause "Tuning TX FAILED" error?

    Does the "Tuning TX FAILED" error cause the failure of the rx path and tx path test?

    Sorry for my bad english!

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