I'm trying to run the ORX port at 307.2 MSPS using the ZC706 and the reference SD card. I have TX2 hooked up to ORX1 as a loopback test. I'm using the IIO app and the DDS set to a single tone at 10 MHz. When I use the default IIO settings with the sample rate set to 245.76 MSPS, I see a clean spectrum with spurs below -70dBm (see attachment). However, when I try to run the same test with the sample rate set to 307.2 MSPS, I see distortion on the ORX path (see attachment). The TX signal at 307.2 MSPS looks clean on a spectrum analyzer.
I'm using profile_config to load the profile generated by the Matlab tool (ADI Filter Wizard v1.10). Please see the attached profile.
Was my profile generated correctly? Is there a bug with the driver?