Hi,
While probing the pulse generator module rf path, I notice that the signal distortion was in the third stage of the rf path. I'm not sure what is causing the signal distortion.
I by-passed the pulse generate. Now the output looks better, and the signal amplitude increased; however, the signal level is now approximately, 8db low. When the output is set to 0.0 dbm, the spectrum analyzer see around -8 db.
I checked the attenuator, and it looks okay. It looks like the signal entering the attenuator is low.
Does anyone know how to calibrate the SML-01 or adjust the output power on the mainboard (before it gets to the attenuator)?
Thanks,
Robert