Other Parts Discussed in Thread: AFE7769
At the TX output of the AFE7769 I am seeing a unwanted spurious tones at and around the local oscillator frequency (3.5GHz). By thinking that it is caused from the
LO leakage , I want to activate the LO and QMC routine in the AFE7769 through Latte software. For this purpose, (I am using AFE7769-3.5EVM with ZCU111 FPGA board)
1. I connected TX 1 to FB1
sysParams.enableTxIqmcLoITrackingCorr = True
sysParams.txIqmcExternalDelayValue = [0,0,0,0]
sysParams.txIqmcFullBandEstimation = True
sysParams.txIqmcCalibMode = 0
AFE.TOP.TIMINGCTRL.txToFbSelectCh(1,0) lines to my Python script to override FBLOOP pins and indicate that FB1 is connected to TX1
When I configure AFE7769 EVB though Latte software and with my new Python script and nothing changed. I cannot observe anything.
So my questions are:
1. Is there anything more to activate LO correction.
2. How can I check whether QMC and LO correction is working or not?
2. Do you have a Latte Script that sets the QMC and LO correction?
Have a nice day,
Dr. Tamer Güdü