I recently got a Rohde & Schwarz SMP02 Signal generator with the SW-B11 frequency option installed, which upgrades frequency range from 2-20GHz to 10MHz-20GHz.
It has some issues. At startup it says:
ERROR -313 Calibration memory lost; YFOM - run internal calibration;
WARNING 134 FM input of YFO module overdriven;
So I unlock level 1 and try to run the YFOM calibration, which basically just clicks a relay and fails with the following error:
ERROR 180 Calibration failed; YFOM: pretune;
The previous owner had it calibrated 2017, not sure if they replaced the RAM battery then or not. However the EEPROM, RAM and RAM battery tests passes. So does also the ALC Amp calibration.
I'm assuming that the YFOM calibration is to correct the output frequency from the two YIG oscillators, which is needed since frequencies are a bit off, 40-90MHz low in the 2-6GHz range. My equipment cannot currently verify frequency above 6GHz, my spectrum analyzer goes to 3.2GHz and counter goes to 6GHz. The frequencies below 2GHz are also off but they are down converted from the 2-10GHz YIG with a 6GHz LO.
I have not succeeded to find any service manual (R&S product no 1035.5015.24) for the SMP, anyone knows where to find it? I'm currently browsing the SME and SMIQ service manuals since they seem to share some modules.
Another things that annoys me is that after I did a reset of the battery backed RAM, the screen is now inverted (white text on black background) and I cannot find how to get it back to black text on white background. Anyone knows?
Edit: Ha, I did another reset and now the screen is back to black on white
Keeping preset pressed while powering on gives black on white but using Error button gives white on black.