Hello,
I think that the important point about sine-to-square converter is about
how you measure the phase noise.
If you use such converter, you don't care about the signal noise when the
output is clipped. But phase noise analyzers care about that too.
That's why Linear characterized LTC6957 addit
The unit I have is locking intermittently and I see a waveform at TP1 on the
servo board that is a clipped sine wave when it is locked. The waveform at TP1
when unlocked is about .2V p-p. I am concerned that the clipping on the bottom
of the waveform is a problem with the bias on the sync detec
Link to photos of S200 investigation:
http://www.eevblog.com/forum/metrology/symmetricom-s200-teardownupgrade-to-s250/
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and fo
Hello,
If I look on the one hour plot it look like it goes in hold mode due to zero
used satellites. If my assumption that the light blue graph in the bottom is
satellites it sees no satellites during about a minute and after that it
selects a fast time constant. From the TIC offset and DAC cha
Success!
Converted to a working S250. Well worth the effort...
http://www.eevblog.com/forum/metrology/symmetricom-s200-teardownupgrade-to-s250/msg1317144/#msg1317144
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