FTS Report on DOY 226 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 55047 216 0.001$ -1.824 2.344 -1.829 2.347 55048 217 0.002 -1.854 2.366 -1.858 2.364 55049 218 -0.003 -1.886 2.373 -1.885 2.376 55050 219 -0.004 -1.916 2.390 -1.913 2.395 55051 220 -0.004 -1.945 2.403 -1.943 2.406 55052 221 -0.001 -1.975 2.426 -1.976 2.427 55053 222 0.000 -2.996# 2.442 -2.998# 2.442 55054 223 0.002 -3.447 2.459 -3.450 2.457 55055 224 0.005 -3.474 2.477 -3.481 2.472 55056 225 0.007 -3.499 2.491 -3.508 2.483 55057 226 0.005* -3.525* 2.507* -3.537* 2.502* 55058 227 0.005* -3.551* 2.524* -3.566* 2.518* II. Frequency Offsets from linear least-squares fits on time-offsets over the period (55047 to 55056): |------------------------------|-----------|-------------|-----------| | | DELTA-F/F | UNCERTAINTY | STD. DEV. | | MEASUREMENT | (E-13) | (+/- E-13) | (nsec.) | |------------------------------|-----------|-------------|-----------| | SPC10 RELATIVE TO UTC(NIST) | 0.084 | 0.041 | 3.171 | | SPC40 RELATIVE TO UTC(NIST) | -3.018 | 0.087 | 1.062 | | SPC60 RELATIVE TO UTC(NIST) | 1.902 | 0.045 | 3.506 | | SPC40 RELATIVE TO SPC10 | -3.337 | 0.111 | 1.347 | | SPC60 RELATIVE TO SPC10 | 1.796 | 0.027 | 2.142 | |------------------------------|-----------|-------------|-----------| III. Comments: * Values derived from linear least squares extrapolation or interpolation $ On DOY 216, SPC 10 station personnel installed new security software patch, accidentally overwrote current day file. There was only 1 hour worth of data recorded. Interpolation used to derive number. # On DOY 222, SPC 40 HM1 (Hydrogen Maser) source changed mode and the standard dropped out of lock. HM2 was swapped in until HM1 is sufficiently stable to be put back online. NOTES: As of DOY 135 (MJD 54966) SPC 10 data are from the newly installed multichannel receiver commonview with NIST. As of DOY 212 (MJD 55043) SPC 40 data are from the newly installed multichannel receiver all-in-view with NIST and with SPC 10. FTS Contacts: Connie Dang (626)305-6194 Linh La (626)305-6184