Comparing modified BG7TBL (Galileo) to Trimble (GPS) GPSDO with HP 53310A MDA

[kj7e]

Its been a while since I pulled out the HP 53310A MDA so gave it some love the other day.  For the fun of it, I connected my modified BG7TBL GPSDO (u-blox NEO-M8T and Oscilloquartz 8663 OCXO) on the Galileo constellation to the reference input, and my second ZYT Trimble based GPSDO on the GPS constellation to the A input.  This was to compare the overall frequency deviation between the two units on separate systems.  Also to confirm my BG7TBL unit did not experience the documented low freq offset.

Happy to say, after a few hours of averaging the samples, no offset can be found.
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Link to my modified BG7TBL;
https://www.eevblog.com/forum/testgear/bg7tbl-gpsdo-master-reference/msg2493726/?topicseen#msg2493726

BG7TBL Freq offset info;
https://blog.febo.com/?p=636

[kj7e]

Video Demo of the 53310A comparing the two GPSDO's including a short time laps accumulating samples.

[kj7e]

Another comparison a week later...

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