FTS Report on DOY 124

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

55675  114     -0.006    -0.178    -2.022    -0.174    -2.016
55676  115      0.004    -0.163    -2.011    -0.169    -2.017
55677  116      0.017$   -0.151    -2.000    -0.170$   -2.017$
55678  117      0.032    -0.140    -1.990    -0.174    -2.022
55679  118      0.041    -0.127    -1.978    -0.170    -2.019
55680  119      0.054    -0.114    -1.971    -0.169    -2.024
55681  120      0.064    -0.094    -1.951    -0.160    -2.013
55682  121      0.080    -0.081    -1.940    -0.163    -2.022
55683  122      0.094    -0.070    -1.934    -0.167    -2.030
55684  123      0.110    -0.061    -1.925    -0.174    -2.038
55685  124      0.120*   -0.045*   -1.911*   -0.166*   -2.033*
55686  125      0.133*   -0.031*   -1.900*   -0.166*   -2.036*
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 55675 to 55684
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    1.510  |    0.054    |   2.805   |
|   SPC40 RELATIVE TO UTC(NIST)   |    1.544  |    0.052    |   2.709   |
|   SPC60 RELATIVE TO UTC(NIST)   |    1.286  |    0.054    |   2.793   |
|   SPC40 RELATIVE TO SPC10       |    0.052  |    0.104    |   5.412   |
|   SPC60 RELATIVE TO SPC10       |   -0.272  |    0.117    |   6.052   |
 -----------------------------------------------------------------------

III.
Comments: 
On DOY 357 (MJD 55553), SPC 40 HM2 (the new Symmetricom Maser) was put online.  
On DOY 060 (MJD 55621), SPC 60 HM2 (Symmetricom) was put online.
$ On DOY 116 (MJD 55677) at SPC10, the new Symmetricom maser was installed in conjunction with a station global power downtime. Neither the station time offset nor the frequency of the online maser was affected.
 

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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