We had another instance of the -800nS timing glitch of the EY CNS-II GPS receiver this morning from 05:47:50 to 06:00:04 PDT (duration 12min 11 sec).

A reminder of this receiver's history:

At EX and EY we had no CNS-II issues for the whole of O4 until the past few months.

The EY 1PPS, nominally with a -250 +/- 50 nS difference to the timing system, went into a -800nS diff state on 30th Sept, then again 1st October and again 18th October. 

We replaced its power supply Tue 22nd October 2024, after which there have been no glitches for 27 days until this morning.