FTS Report on DOY 238

I.  The following are clock offsets, in microseconds between the clocks
at each DSN complex and each complex relative to UTC(NIST).  The offset
is a mean of readings using several GPS space vehicles in common view.

                SPC10     SPC40     SPC60     SPC40     SPC60
                MINUS     MINUS     MINUS     MINUS     MINUS
 MJD   DOY      NIST      NIST      NIST      SPC10     SPC10

55789  228     -0.358     0.483    -1.055     0.839    -0.696
55790  229     -0.366     0.491    -1.036     0.855    -0.670
55791  230     -0.372     0.499    -1.018     0.870    -0.645
55792  231     -0.382     0.506    -1.002     0.886    -0.618
55793  232     -0.391     0.513    -0.985     0.902    -0.593
55794  233     -0.401     0.520    -0.966     0.920    -0.566
55795  234     -0.408     0.526    -0.949     0.932    -0.539
55796  235     -0.417     0.532    -0.932     0.947    -0.513
55797  236     -0.425     0.537    -0.913     0.961    -0.487
55798  237     -0.435    -0.091@   -0.896     0.342@   -0.460
55799  238     -0.443*    0.298*   -0.878*    0.739*   -0.434*
55800  239     -0.451*    0.270*   -0.861*    0.720*   -0.408*
Values derived from linear least squares extrapolation or interpolation are indicated by (*) next to the time offset. 

II.  Frequency Offsets from linear least-squares fits on time-offsets over the period from 55789 to 55798
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |   -0.997  |    0.010    |   0.802   |
|   SPC40 RELATIVE TO UTC(NIST)   |   -3.230  |    2.207    | 171.627   |
|   SPC60 RELATIVE TO UTC(NIST)   |    2.037  |    0.008    |   0.618   |
|   SPC40 RELATIVE TO SPC10       |   -2.232  |    2.206    | 171.508   |
|   SPC60 RELATIVE TO SPC10       |    3.043  |    0.009    |   0.664   |
 -----------------------------------------------------------------------

III. Comments: 
@Global power outage in SPC40 on DOY 237 0100 to 1300 UTC. 
This is to allow for an ordered transition from the old power distribution system to the new “busducting” system. 
This outage does not affect the maser room. The MCAs was started and re-synced to GPS time at 1000 UTC, approximately. 
The offset was less than -70nS. An anomaly was noted with the FTS alarm interface panel during the power outage. 
Further investigation is required to determine why the alarms are not correctly indicating a fault. 


NOTES: All DSN data are from the new multichannel receivers.
SPC 10 and SPC 60 offsets are commonviewed with NIST and with each other.
SPC 40 offsets are all-in-viewed with NIST and with SPC 10. 

FTS Contacts: Connie Dang (626)305-6194 :: Linh La (626)305-6184



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