[time-nuts] Symmetricom X72 and Lady Heather results

Mark Sims holrum at hotmail.com
Thu Jul 27 21:27:07 EDT 2017


I'm in the process of adding support to Lady Heather for the Symmetricom X72 (and SA22) rubidium oscillators.  I have a most of the functionality working.  The X72 has a "health" message that dumps a couple dozen values.  The values are labeled with some rather cryptic names that give some hint about what they are,  but no where in their (miserable) documentation do they elaborate on what the values mean.   Does anybody have any info on them.

The X72 is user interface is a very frustrating an infuriating thing to work with.   The device has several glaring omissions in what it does...  like no way to read back any settings that you have made and no way to save most of them in EEPROM and no command to restore the unit to its factory default state.

Attached is a plot showing most of the non-static health values... it looks like most of them are highly correlated with temperature.  Without heavily average-filtering the display,  the values look a lot like noise.
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