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Reference GPSDO generator for Counter/Signal Generator JDS6600
Reference GPSDO generator for Counter/Signal Generator JDS6600
Output 24MHz(regulated) disciplined from GNSS
With the help of si2351 synthesizer we can achive any output frequency neded for counter input reference.
Sometimes we have very bad conditions for satellite recrieving. for example, in bilding, city, etc.
The strategy is:
Heated OCXO have very good short time stabilty but not for long term.
When we have good conditions - many satellites and good TDOP ratio we make short circle measerment and correction cycle and calculete correction voltage for OCXO regulation.
si5351c is clocked from CLKIN connected to 10MHz OCXO output.
https://www.youtube.com/watch?v=GX4eSP_v_lg
https://www.youtube.com/watch?v=lYeWmuFEUH0
Reference GPSDO generator for Counter/Signal Generator JDS6600
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