Hi All,
What I did:
0: Stopped all SPI traffic and display updating to avoid supply load
changes.
1: Used a demodulating spectrum analyzer to listen to the FM at the
200th overtone (2 GHz), only white noise (e.g. dominant high frequencies)
2: Use a modulation analyzer to analyzed the FM
Hi
The typical answer to this issue is to first try to clean up the supply to the
DAC. If that does not fix the issue, you likely need a better DAC. Unless the
TCXO has a crazy large tune range, rational parts should be able to do the job.
If the TCXO has a crazy large range then maybe a