Yves,
?
I did the Freq and amplitude al this evening after an hour of warmup. I made a full video of it but it's rather huge so i have to find a proper way to reduce the size first.
The result was a passed calibration and the 300MHz level at roughly -5dB again
Below is a picture of the Cal data, I didn't see anything that seems off.?
?
The Tuning:
?
NBW:
?
Additionally the Analyzer Gains: (maybe the 0dB for the 21.4dB gain is strange?)
?
The flatness correction data, all 0:
?
There is something else, when I just had the analyzer, I found a part about the?the service diag options in the cal menu. For example the FM Span, FM Coil Drive, 2v Ref and Gnd Ref detector. It showed the trace on the screen.
I can't find the mention of it at the moment, in the service manual i linked before there is a part of it starting at page 238 (Using the Internal Service-Diagnostic
Routines) But the FM Span isn't in there. From what I recall the FM span in 10MHz span had to be an upward slope but it was downward for my analyzer.
This was the picture I took, notice the FMSPAN below the REF. Perhaps I'm confusing it with the FM coil drive though.
I'm not sure if it is any relevant but you're probably a better judge of that.
?
Marco
