FTS Report on DOY 181

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

56097  171     -0.205    -0.102    -1.237     0.102    -1.031
56098  172     -0.215    -0.102    -1.256     0.112    -1.039
56099  173     -0.224    -0.103    -1.274$    0.119    -1.050$
56100  174     -0.234    -0.102    -1.259     0.131    -1.025
56101  175     -0.244    -0.101    -1.237     0.142    -0.993
56102  176     -0.254    -0.105    -1.219     0.148    -0.967
56103  177     -0.263    -0.104    -1.195     0.157    -0.932
56104  178     -0.276    -0.102    -1.175     0.172    -0.899
56105  179     -0.285    -0.096#   -1.153     0.188#   -0.866
56106  180     -0.297    -0.182    -1.131     0.114    -0.834
56107  181     -0.306*   -0.133*   -1.111*    0.172*   -0.803*
56108  182     -0.316*   -0.137*   -1.089*    0.178*   -0.772*
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 56097 to 56106
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |   -1.177  |    0.013    |   1.006   |
|   SPC40 RELATIVE TO UTC(NIST)   |   -0.483  |    0.284    |  22.061   |
|   SPC60 RELATIVE TO UTC(NIST)   |    2.464  |    0.017    |   1.341   |
|   SPC40 RELATIVE TO SPC10       |    0.699  |    0.277    |  21.519   |
|   SPC60 RELATIVE TO SPC10       |    3.686  |    0.026    |   1.998   |
 -----------------------------------------------------------------------

III.
Comments: 
$ On DOY 173 (MJD 56099), SPC 60 HM2 (Symmetricom 263) frequency was adjusted by 5*E
# On DOY 179 (MJD 56105), SPC 40 had some worn out parts of the FRD replaced, necessitating a resynch of the MCA. 
The time could be off by 100 nanoseconds.

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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