FTS Report on DOY 241

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

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@   -0.895     0.342@   -0.460
55799  238     -0.442    -0.126    -0.880     0.314    -0.437
55800  239     -0.451    -0.123    -0.863     0.327    -0.411
55801  240     -0.460    -0.117    -0.845     0.341    -0.383
55802  241     -0.468*   -0.113*   -0.827*    0.355*   -0.357*
55803  242     -0.477*   -0.108*   -0.810*    0.368*   -0.331*
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 55792 to 55801
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |   -0.991  |    0.007    |   0.544   |
|   SPC40 RELATIVE TO UTC(NIST)   |    0.527  |    0.009    |   0.722   |
|   SPC60 RELATIVE TO UTC(NIST)   |    2.014  |    0.011    |   0.876   |
|   SPC40 RELATIVE TO SPC10       |    1.557  |    0.006    |   0.433   |
|   SPC60 RELATIVE TO SPC10       |    3.015  |    0.013    |   1.035   |
 -----------------------------------------------------------------------

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.
The MCAs was started and re-synced to GPS time at 1000 UTC, approximately. The offset was less than -70nS.

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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