The Timing Solutions time code generator in the MSR has been resync'ed to the Symmetricom NTP server following the power outage of June 4,5.  The following steps were performed:

Sync the Symmetricom 4310B Cesium Frequency Standard to the Symmetricom S350 NTP Server.

Attach the 1PPS output of the Symmetricom S350 NTP server to the Sync input of the Symmetricom 4310B Frequency Standard (aka atomic clock). Attach matched coax cables from the Sync input of the 4310B and the 1PPS Out of the 4310B using coax T's to an oscilloscope to measure the difference between the two signals.  Difference between sync pulse and 1PPS out was 178mS.  Send sync arm command to the 4310B via the RS-232 input to the 4310B.  Observe that the difference between the sync pulse and the 1PPS out of the 4310B is now in the range of 30nS.  Note that the jitter of the S350 is much greater than the output of the 4310B, so precise measurement is not really possible to the 1nS range.  Also, it's only possible to sync the 4310B to a 1PPS input to +/- 100nS.

Sync the Timing Solutions timing distribution system to the 4310B.

Next, attach the 1PPS out of the 4310B to the Timing Solutions TCG 1PPS Sync Input. Using the oscilloscope, measure the difference between the TCG 1PPS Sync Input and the TCG 1PPS Output.  This difference was in excess of 430mS.  Adjust the slew using the Timing Solutions MCA user interface to bring the difference as small as possible.  This involved several iterations as it is only possible to adjust the slew by a maximum of 100mS for each adjustment. Also note that the minimum adjustment is 10nS.  The ending best difference obtained was 4nS between the 4310B 1PPS output and the TCG 1PPS output. The 4310B 1PPS output is connected to the TCG Advance 1PPS input to monitor coincidence to +/- 20nS between the 4310B and TCG 1PPS.  No adjustment of the Timing Solutions TCT units at the end station is needed, as the only adjustment possible is to compensate for the length of the optical fiber between the corner and end stations which is a fixed value.

The 1PPS output of the Timing Solutions TDS is connected to the corner station timing comparator input 1 while the Symmetricom S350 NTP server is connected to input 2.  The MEDM screen for the timing comparator shows the difference between the timing master 1PPS derived from a separate GPS receiver and the various inputs.