WP11850 Resync Atomic Clock
Daniel, Fil, Dave:
13:32 PDT: Daniel resynchronized the MSR Atomic Clock to the timing system's 1PPS to clear the timing error.
The procedure was:
Connect a Windows laptop (Daniel's surface) to the RS232 port on the rear of the Symmetricom 4310 Cesium Frequency Standard unit (located in MSR Rack02 U26-27). We used a DB9 null-modem and serial/USB converter cable to connect the RS232 connector to a USB-A port on the laptop.
Daniel ran his monitor code, setting up the serial port for 9600 Baud. We verified the error string as "16,07,00,00,00" which, as before alog70401, means 0x16 Reboot Alert, 0x07 CBT Signal Degradation.
Daniel ran a short 50Ohm coax BNC cable from the SYNC port on the rear of the Atomic Clock to port 8 of the comparitor (the first output 1PPS port). He then ran the resync command which cleared the error.
Power On Hours = 80,205 hours equates to 9 years 2 months.
I reopened FRS28257 for this issue
Attached trends:
50 mins of second trend in the hour before the glitch (8pm Sat night PDT)
30 mins of second trend data after today's resync
2 mins second trend around the time of the glitch (21:16 Sat PDT)
