                                                                 GE-7/24/98

                          E15 Science Data Losses

150-21:43 --->201-05:37; Lost TFs in brackets[.....] Changes in Bold

 Time       DSS  Reference     RT  Rcvd Events           Comments         Cause  Pass
 (GMT)                        TFs                                                #
                             Lost  from

                                    PPT

 151-02:41   63                 1       - Unknown        - Lost TF            U  3155
                                                         [21094] 4 RTS
                                                         VCDUs

 151-19:09   14  DR#            2     0 - The scheduled  - Lost TFs          PD  3156
                 G03796                 u/l xfer did     [21238 & 21239]
 -> 19:23                               not occur as     8 RTS VCDUs
                                        DSS14 utilized
                                        the incorrect
                                        tune out
                                        message. DSS43
                                        had to resweep
                                        the u/l.

 151-19:43  14/                 1     0 - Both stations  - Lost TF            U  3156
                                        dropped BVR and  [21243] 4 RTS
             43                         FSR lock for an  VCDUs
                                        unknown reason.

 152-01:58   63  DR#            2     0 - The station    - Lost TFs           U  3156
                 L02713                 had to resweep   [21298 & 21299]
 -> 02:14                               the u/l after    8 RTS VCDUs
                                        failing to lock
                                        the s/c rcvr
                                        the first time.
                                        The sweep rate
                                        was decreased
                                        to allow the
                                        successful
                                        second attempt.

 153-21:43   43                 1     0 - Rate change    - Lost TF            S  3158
                                        80-32bps. This   [21722] 2 PB
                                        was the last TF  VCDUs
                                        of the pass.

 157-15:35   43                 7     0 - Rate change    - Lost TF            S  3162
                                        80-120bps        [22745] 4 PB
 16:41                                                   VCDUs
                                        - Rate change
 -> 16:45                               120-160bps       - Lost TF
                                                         [22774] 3 PB &
 19:08                                  - Rate change    1 Priority
                                        160-120bps       VCDUs
 19:42
                                        - Rate change    - Lost TF
 158-00:56                              120-80bps        [22860] 4 PB
                                                         VCDUs
 -> 01:04                               - Rate change
                                        80-60bps         - Lost TF
 01:45                                                   [22875] 4 PB
                                        - Rate change    VCDUs
                                        60-40bps
                                                         - Lost TFs
                                                         [22967 & 22968]
                                                         8 PB VCDUs

                                                         - Lost TF
                                                         22978] 4 PB
                                                         VCDUs

 158-01:57   43                 1     0 - Unknown        - Lost TF            U  3162
                                                         [22980] 2 PB &
                                                         1 Priority
                                                         VCDUs

 160-07:45   63                 1     0 - SPE +/- 75     - Lost TF          JN?  3164
                                        degrees          [23611] 3 PB &
                                                         1 Priority
                                                         VCDUs

 162-00:46   43                 1     0 - Rate change    - Lost TF            S  3166
                                        80-60bps         [24113] 4 PB
                                                         VCDUs

 162-16:19   43                 1     0 - Rate change    - Lost TF            S  3167
                                        60-80bps         [24297] 4 PB
                                                         VCDUs

 164-00:24   43                 1     0 - Unkown         - Lost TF            U  3168
                                                         [24684] 4 PB
                                                         VCDUs

 166-04:18   63                 1     0 - Rate change    - Lost TF            S  3170
                                        40-60bps         [25355] 4 PB
                                                         VCDUs

 166-08:38   63                 1     0 - Rate change    - Lost TF            S  3170
                                        60-40bps         [25412] 3 PB &
                                                         1 Priority
                                                         VCDUs

 166-15:18   43                 5     0 -FSR 1 failed    - Lost TF            H  3171
                                        and the station  [25508, 25513 &
 15:42                                  ran with only    25514, 25518,
                                        FCD1. All rate   25577] 22 PB &
 -> 15:51                               changes were     1 Priority
                                        lost due to      VCDUs
 16:08                                  known
                                        limitation with
 19:26                                  BVR/FCD1
                                        config.

 168-01:21   43                 1     0 - Unknown        - Lost TF            U  3172
                                                         [25950] 3 PB
                                                         VCDUs

 169-15:04   43                 2     0 - Rate change    - Lost TF            S  3174
                                        40-60bps         [26437] 4 PB
 15:52                                                   VCDUs
                                        - Rate change
                                        60-80bps         - Lost TF
                                                         [26447] 4 PB
                                                         VCDUs

 Time       DSS  Reference     RT  Rcvd Events           Comments         Cause  Pass
 (GMT)                        TFs                                                #
                             Lost  from

                                    PPT

 170-00:11   43                 3     0 - Rate change    - Lost               S  3174
                                        80-60bps         TF[26593] 4 PB
 01:01                                                   VCDUs
                                        - Rate change
 01:15                                  60-40bps         - Lost TF
                                                         [26604] 4 PB
                                        - Rate change    VCDUs
                                        40-32bps
                                                         - Lost TF
                                                         [26606] 4 PB
                                                         VCDUs

 170-14:54   14                 1     0 - Rate change    - Lost TF            S  3175
                                        80-40bps         [26783] 2 PB &
                                                         1 Priority
                                                         VCDUs

 170-15:07   43                 1     1 - Rate change    - Lost TF            S  3175
                                        40-60bps         [27100] 4 PB
                                                         VCDUs

                                                         **Recovered
                                                         from .btd PPT
                                                         file**

 171-21:03   43  DR#           28     0 - High SNT       - Lost TFs           W  3176
                 A02744                 caused by heavy  [27201 & 27202,
 ->                                     rain.            27204, 27207,
                                                         27223->27227,
 172-00:59                                               27229,
                                                         27245->27253,
                                                         27257->27265]
                                                         108 PB & 4
                                                         Priority VCDUs

 173-14:47   43                 1     0 - Rate change    - Lost TF            S  3178
                                        40-60bps         [27737] 3 PB &
                                                         1 Priority
                                                         VCDUs

 176-11:26  14                          - The playback   - Lost TFs         UPA  3181
                                        was halted to    [28453 ->
 -> 15:15    43                         accommodate the  28501] 6
                                        SOHO s/c         Priority VCDUs
                                        emergency. 47
                                        TFs were lost.

 176-21:00  43                 60     0 - The support    - Lost TFs         UPA  3181
                                        was ended at     [28599 ->
 ->                                     176/2100z to     28658] 233 PB &
                                        accommodate the  7 Priority
 177-00:45                              SOHO s/c         VCDUs
                                        emergency.

 177-03:37  63                 39     0 - The support    - Lost TFs         UPA  3181
                                        was ended at     [28683 ->
 ->                                     0340z to         28721] 148 PB &
                                        accommodate the  8 Priority
 177-08:03                              SOHO s/c         VCDUs
                                        emergency.

 177-11:13   14                44     0 - The support    - Lost TFs         UPA  3182
                                        was ended at     [28753 ->
 ->                                     1115z to         28796] 115 PB &
                                        accommodate the  6 Priority
 177-14:36                              SOHO s/c         VCDUs
                                        emergency.

 178-10:35   14                 2     0 - Rate change    - Lost TF            S  3183
                                        40-60bps         [29005] 4 PB
 15:46                                                   VCDUs
                                        - Rate change
                                        60-40bps         - Lost TF
                                                         [29073] 4 PB V
                                                         CDUs

 178-16:13   14                 1     0 - Unknown        - Lost TF            U  3183
                                                         [29077] 3 PB &
                                                         1 Priority
                                                         VCDUs

 178-18:09   14                 1     0 - Rate change    - Lost TF            S  3183
                                        40-32bps         [29094] 4 PB
                                                         VCDUs

 180-14:24   43  DR#            6     6 - Excessive SPE  - Lost TFs           W  3185
                 A02764                 at the BVR and   [29588 ->
 -> 14:57                               rain.            29593] 20 PB &
                                                         2 Priority
                                                         VCDUs

                                                         **Recovered
                                                         from .fcd PPT
                                                         file**

 180-15:05   43                14    14 - All TFs lost   - Lost TFs           I  3185
                                        due to an        [29596->29598,
 -> 15:20                               unspecified      29601->29603,
                                        internal JPL     29605-> 29608,
 15:28                                  anomaly          29610-29613] 55
                                        according to     PB & 1 Priority
 -> 15:42                               the              VCDUs
                                        indications.
 15:46                                  The TFs should   **Recovered
                                        be recoverable   from .fcd PPT
 -> 16:05                               in the PPT.      file**

 16:09

 -> 16:25

 180-16:45   43                29     0 - Heavy rain     - Lost TFs           W  3185
                                        and high SNT.    [29620->29647,
 -> 18:21                                                29681] 113 PB &
                                                         3 Priority
 20:13                                                   VCDUs

 Time       DSS  Reference     RT  Rcvd Events           Comments         Cause  Pass
 (GMT)                        TFs                                                #
                             Lost  from

                                    PPT

 184-07:40   14  DR#           19     0 - The            - Lost TFs           A  3189
                 G03891                 subreflector     [30598 ->
 -> 08:55                               controller was   30617] 41 PB &
                                        fixed in         6 Priority
                                        pre-limits. The  VCDUs
                                        station had to
                                        reset the
                                        controller to
                                        move the
                                        subreflector
                                        out of
                                        re-limits to
                                        the track
                                        position.

 184-10:08   14                 6     0 - The outages    - Lost TFs        A/PD  3189
                                        were caused by   [30634 ->
 -> 10:22                               unscheduled      30636, 30642,
                                        uplink not       30647 & 30648]
 10:44                                  covered by       24 PB VCDUs
                                        PWSfill, ref
 11:07                                  DR# G03891, a
                                        failed uplink
 -> 11:16                               sweep,
                                        unscheduled
                                        mode changes
                                        and the
                                        re-sweep
                                        necessitated by
                                        the failed
                                        uplink sweep.

 186-16:37   43  DR#           19     0 - Heavy rain     - Lost TF            W  3191
                 A02776                 and subsequent   [31354] 3 PB &
 17:04                                  high SNT.        1 Priority
                                                         VCDUs
 -> 17:11
                                                         - Lost TFs
 17:21                                                   [31362 & 31363]
                                                         8 PB VCDUs
 -> 17:28
                                                         - Lost TFs
 17:42                                                   [31367 & 31368]
                                                         8 PB VCDUs
 -> 18:12
                                                         - Lost TFs
 18:30                                                   [31373 ->
                                                         31381] 35 PB &
 -> 18:36                                                1 Priority
                                                         VCDUs
 20:15
                                                         - Lost TFs
 -> 20:22                                                [31387 & 31388]
                                                         8 PB VCDUs
 21:10
                                                         - Lost TFs
                                                         [31418 & 31419]
                                                         8 PB VCDUs

                                                         - Lost TF
                                                         [31434] 4 PB
                                                         VCDUs

 189-07:37   14  DR#           75     0 - The            - Lost TFs           A  3194
                 G03904                 Subreflector     [32188 ->
 -> 13:43                               was unable to    32262] 259 PB &
                                        move in the      12 Priority
                                        z-axis due to a  VCDUs
                                        severed cable.

 189-14:03   43                 2     0 - The station    - Lost TFs         UPA  3194
                                        was configured   [32266 & 32269]
 14:17                                  with diplexer    8 PB VCDUs
                                        in to
                                        accommodate
                                        real-time need
                                        for commanding.

 189-15:33   43                 1     0 - Unscheduled    - Lost TF          UPA  3194
                                        mode change      [32289] 4 PB
                                        back to 1-way.   VCDUs

 191-14:37   43  DR#            2     2 - The BTD was    - Lost TFs           S  3196
                 A02793                 rebooted after   [32823 & 32824]
 -> 14:44                               a FCD1-BVR       8 PB VCDUs
                                        interface
                                        anomaly          **Recovered in
                                        necessitated     the .fcd PPT
                                        it.              file**

 192-07:12   63                 1     0 - Rate change    - Lost TF            S  3196
                                        60-40bps         [33071] 4 PB
                                                         VCDUs

 192-14:13   43                 1     0 - Rate change    - Lost TF            S  3196
                                        60-80bps         [33181] 4 PB
                                                         VCDUs

 192-23:06   43                 2     0 - Rate change    - Lost TFs           S  3197
                                        80-60bps         [33337 & 33338]
 -> 23:15                                                8 PB VCDUs

 194-08:35   63                 1     0 - Rate change    - Lost TF            S  3198
                                        60-40bps         [33872] 4 PB
                                                         VCDUs

 195-23:08   43                 1     0 - Rate change    - Lost TF            S  3200
                                        80-60bps         [34449] 4 PB
                                                         VCDUs

 196-10:28   14                 1     0 - Rate change    - Lost TF            S  3201
                                        60-80bps         [34563] 1
                                                         Priority VCDU

 196-16:43   43                 1     0 - Rate change    - Lost TF            S  3201
                                        80-120bps        [34671] 4 PB
                                                         VCDUs

 197-09:40   14  DR#            3     0 - The            - Lost TFs           A  3202
                 G03932                 autocollimator   [34865, 34875 &
 -> 10:18                               halted           34876] 12 PB
                                        operation        VCDUs
                                        twice. The
                                        assembly was
                                        restarted to
                                        restore.

 Time       DSS  Reference     RT  Rcvd Events           Comments         Cause  Pass
 (GMT)                        TFs                                                #
                             Lost  from

                                    PPT

 197-16:18   43                 3     0 - Rate change    - Lost TF            S  3202
                                        60-80bps         [34966] 4 PB
 20:28                                                   VCDUs
                                        - Rate change
 23:02                                  80-60bps         - Lost TF
                                                         [35039] 4 PB
                                        - Rate change    VCDUs
                                        60-40bps
                                                         - Lost TF
                                                         [35073] 4 PB
                                                         VCDUs

 197-06:45   14  FR#           18    18 - The TIS8 new   - Lost TFs           I  3203
                 100477                 "restore         [35147 ->
 -> 08:50                               script" to       35164] 46 PB,
                                        reflect the new  10 RTS, & 12
                                        map location     Priority VCDUs
                                        for decom was
                                        inop. The TIS8   **Recovered
                                        was halted and   from .fcd PPT
                                        restarted with   file**
                                        an old script
                                        to restore
                                        operability.

 198-13:30   43                 2     0 - Rate change    - Lost TF            S  3203
                                        60-80bps         [35242] 4 PB
 15:53                                                   VCDUs
                                        - Rate change
                                        80-120bps        - Lost TF
                                                         [35284] 3 PB &
                                                         1 RTS VCDUs

                                        NOTE - the E15
                                        DMS playback
                                        ended at ~
                                        199/20:29z.

                                        NOTE - end of
                                        E15 sequence at
                                        201/0537z

 TOTAL                        417    41

                                        Total Science    10301.5
                                        Frames:

                                        Total Frames     15250
                                        (including
                                        Fill):

PP - Procedural (Project) Transfer Frames #s lost in brackets [.........]

PD - Procedural (DSN)

H - H/W Related/Failure

A - Antenna Problem

S - S/W Related

UPA - Unscheduled project action

SPA - Scheduled Project activity

GCF- GCF hardware/software anomaly

F - Facility problem (e.g. power failure)

U - Unknown

W - Weather (e.g. Parkes stow due to high winds)

I - Internal JPL AMMOS anomaly

JN - Jupiter Hot Body Noise

SS - Solar Scintillation
