I am getting started with the AD9375 and I wish to use it to test out the DPD Algorithm.
I am using the SKY-PA that comes with the kit for the test.
I'm following the instructions on the UG-992 DPD-section: I set up a waveform and load it, turn on the PA, can see the pink trace on the screen of the distorted signal received on ORx.
I click on Initialize PA Cals but nothing happens. The button "Initialize PA Cals" turns gray (no more clickable), the three buttons on its right (Enable CLGC, VSWR Measure, DPD Adaption) all remain gray, and the carrier seen on the waveform disappears.Very confusing.Any help is highly appreciated !Regards
Try with an older DPD GUI version. I have uploaded the GUI in the below link:
Which version of the DPD GUI you are using? You can download the latest version form the below link and then check:
For DPD test reports with different PA's you can refer to the below link:
AD9375 Digital Pre-Distortion (DPD) | Analog Devices, Inc.
Hi,apologies for the late reply.
I am using DPD GUI v3.100 (I believe this is the latest version)(Thank you for the test reports link. I can compare with it once i get my set up running )
Try reinstalling the GUI once as it looks to be a installation issue.
I tried reinstalling.The PA cals function worked I believe twice (I dont understand how) when the the PA was not included in the feedback to ORx loop. I have tried to reproduce the success with the PA included. No success. Then I tried to replicate what previously worked (feedback loop to ORx without PA), and again.. no success.I think the GUI is bugging somehow: I find it very weird that transmission is turned off whenever i click on "Initialize PA Cals" (I can tell because whatever signal that previously appeared on my spectrum analyzer completely disappears once I click)Thank you for your help
Did you disconnect the TES GUI before connecting to the DPD GUI?