                                                                 GE-6/01/98

                          E14 Science Data Losses

087-13:49 --->150-21:43; Lost TFs in brackets[.....] Changes in Bold

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

                                    PPT

 088-04:05   43                 1     0 - Rate change   - Lost TF        S  3092
                                        40 - 32 bps     [8265] 3 RS
                                                        VCDUs

 088-05:30   43                 1     0 - Rate change   - Lost TF        S  3092
                                        32 - 20 bps     [8275] 2
                                                        RTS VCDUs

 088-10:47   63                 1     0 - Unknown       - Lost TF        U  3092
                                                        [8308] 4
                                                        RTS VCDUs

 089-04:23   43                 1     0 - Rate change   - Lost TF        S  3093
                                        40-32bps        [8454] 2
                                                        RTS & 1
                                                        Priority
                                                        VCDUs

 090-21:48   14                 2     1 - Rate change   - Lost TF        S  3095
                                        40-32bps        [8818 &
                                                        8819] 7 PB
                                                        & 1
                                                        Priority
                                                        VCDUs

                                                        **TF [8819]
                                                        recovered
                                                        from the
                                                        .fcd PPT
                                                        file** 4 PB
                                                        VCDUs

 091-18:00   14  DR#            9     0 - Antenna       - Lost TFs       A  3096
                 G03564                 pointing        [8970 -
 -> 18:41                               assembly (APA)  8978] 27 PB
                                        anomaly; the    & 1
                                        year was        Priority
                                        incorrect in    VCDUs
                                        the assembly,
                                        1999 vs 1998.
                                        The year was
                                        corrected and
                                        the anomaly
                                        cleared.

 103-14:15   63                 1     1 - Rate change   - Lost TF        S  3107
                                        32-20bps        [10780] 4
                                                        PB VCDUs

                                                        **Recovered
                                                        in .fcd PPT
                                                        file**

 107-07:09   63  DR#            5     1 - The original  - Lost TFs[      U  3111
                 L01998.                reason was      11608,
 07:22                                  unknown.        11610,
                                                        11620 &
 08:30                                  - The Telecom   11621,
                                        analysis        11625] 17
 -> 08:44                               states that     PB & 1
                                        these frames    Priority
 09:18                                  were lost due   VCDUs
                                        to high SPE.
                                                        **TF
                                                        [11625]
                                                        recovered
                                                        in the .fcd
                                                        PPT file.4
                                                        PB VCDUs**

 113-17:58   43                 2     2 - The TIS was   - Lost TFs       I  3118
                                        rebooted.       [12953 &
 -> 18:11                                               12954] 5
                                                        Priority
                                                        VCDUs

                                                        **Recovered
                                                        in the .fcd
                                                        PPT file**

 114-11:40   14                 1     1 - The GTC did   - Lost TF        S  3119
                                        not transmit    [13136] 1
                                        the first TF;   PB & 1
                                        possible GTC    Priority
                                        merge anomaly.  VCDUs

                                                        **Recovered
                                                        in the .fcd
                                                        PPT file**

 118-11:37   14  DR#            4     0 -The BTD and    - Lost TFs       S  3123
                 G03678                 FCD2 required   [13939 &
 -> 12:11                               rebooting       13940,
                                        during the two  13945 &
 12:45                                  time periods    13946] 8
                                        to restore      Priority &
 -> 13:00                               output of tlm   7 PB VCDUs
                                        frames.

 119-11:31   14                 2     2 - GTC merge     - Lost TFs       S  3124
                                        anomaly. The    [14136 &
 -> 11:41                               first two TFs   14137 7
                                        were not        Priority
                                        output.         VCDUs

                                                        **Recovered
                                                        in the .fcd
                                                        PPT file**

 120-03:53   43  DR#            2     0 - FSR1 sample   - Lost TFs       U  3124
                 A02603                 interruptions   [14337 &
 -> 04:07                               caused by       14338] 7 PB
                                        reasons         & 1
                                        unknown.        Priority
                                                        VCDUs

 120-10:55   63                 2     0 - Large SPE     - Lost TFs       U  3124
                                        excursions.     [14395 &
 -> 11:15                                               14396] 7 PB
                                                        & 1
                                                        Priority
                                                        VCDUs

 121-19:05   43                 2     2 - Unknown.      - Lost TFs       U  3126
                                        Suspected GTC   [14701 &
 122-04:09                              merge anomaly   14813] 6 PB
                                        when FCD1       & 1
                                        drops out of    Priority
                                        lock for an     VCDUs
                                        unknown
                                        reason.         **Recovered
                                                        in the .fcd
                                                        PPT file**

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

                                    PPT

 122-17:33   43                 1     1 - Unknown. The  - Lost TF        U  3127
                                        BTD performed   [14899] 1
                                        three           PB & 1
                                        auto-re-acq's   Priority
                                        and the SNT     VCDUs
                                        was >50k from
                                        BOT at 1715 -   **Recovered
                                        ~ 17:35z.       in the .fcd
                                                        PPT file**

 122-22:41   43  DR#            2     1 - Unknown.      - Lost TFs       U  3127
                 A02614                 Suspected GTC   [14959 &
 23:00                                  merge anomaly   14963] 7 PB
                                        when FCD1       & 1
                                        drops out of    Priority
                                        lock for an     VCDUs
                                        unknown
                                        reason.         **TF
                                                        [14963]
                                                        recovered
                                                        from .fcd
                                                        PPT file**

 123-20:21   43  DR#            5     3 - Unknown.      - Lost TFs     U/S  3128
                 A02620                 FCD1 was        [15105,
 ->                                     dropping in     15135,
                                        and out lock    15138,
 124-01:01                              during this     15142,
                                        timeframe. The  15144] 18
                                        fifth TF was    PB & 2
                                        lost when the   Priority
                                        "stop" od for   VCDUs
                                        FCD1 was
                                        entered.        **TFs
                                                        [15138,
                                                        15142, &
                                                        15144]
                                                        recovered
                                                        from the
                                                        .fcd PPT
                                                        file**

 124-03:39   43                 1     0 - Rate change   - Lost TF        S  3128
                                        32-20bps        [15168] 4
                                                        PB VCDUs

 127-02:20   43                 1     0 - Rate change   - Lost TF        S  3131
                                        60-40bps        [15753] 3
                                                        PB & 1
                                                        Priority
                                                        VCDUs

 128-00:37   43  DR#           11     0 - Solar         - Lost TFs      SS  3132
                 A02637                 Scintillation   [15971,
 -> 01:37                                               15973 ->
                                                        15978] 43
                                                        Pb & 1
                                                        Priority
                                                        VCDUs

 128-02:24   43  DR#            1     0 - Rate change   - Lost TF        S  3132
                 A02638                 60-40bps        [15993] 3
                                                        PB & 1
                                                        Priority
                                                        VCDUs

 128-06:30   63  DR#            6     4 - Solar         - Lost TFs      SS  3132
                 L02064                 Scintillation   [16025,
 -> 09:54                                               16039,
                                                        16041 &
                                                        16042,
                                                        16047,
                                                        16053 &
                                                        16054] 23
                                                        PB & 1
                                                        Priority
                                                        VCDUs

                                                        **TFs
                                                        [16025,
                                                        16039,
                                                        16041, &
                                                        16054]
                                                        recovered
                                                        in the .fcd
                                                        PPT file**

 128-11:16   14                 1     0 - Unknown       - Lost TF        U  3133
                                                        [16065] 2
                                                        Priority &
                                                        1 PB VCDUs

                                        **Note** the
                                        playback was
                                        halted and a
                                        DSS43 support
                                        (#3133)
                                        deleted so as
                                        to allow the
                                        station to
                                        support a
                                        radio science
                                        activity for a
                                        new gamma ray
                                        source. 20
                                        Priority VCDUs
                                        lost during
                                        the time of
                                        deleted
                                        support.

 130-16:39   43  FR# 90865     21    21 - The .bcs      - Lost TFs       I  3135
                                        utility         [16529 ->
 -> 18:57                               halted. SMC7    16550] 76
                                        required a      PB & 4
                                        reboot and      Priority
                                        backup to       VCDUs
                                        restore.
                                                        **Recovered
                                                        from the
                                                        .fcd PPT
                                                        file**

 131-03:35   43                 1     1 - Rate change   - Lost TF        S  3135
                                        60-40bps        [16657] 4
                                                        PB VCDUs

                                                        **Recovered
                                                        in the .fcd
                                                        PPT file**

 131-05:44   63                 1     0 - The station   - Lost TF        U  3135
                                        was late in     [16672] 1
                                        acquiring the   PB 7 1
                                        downlink        Priority
                                        2-way.          VCDUs

 132-17:10   43  FR#            4     4 - DSOT swapped  - Lost TFs       I  3137
                 100122                 from SMC3 to    [16994 ->
 -> 17:36                               SMC7 after      16997] 8
                                        BOT.            Priority &
                                        Regrettably no  8 PB VCDUs
                                        GIF instance
                                        was running on  **Recovered
                                        SMC7.           in the .fcd
                                                        PPT file**

 138-03:17   43                 1     1 - Unknown       - Lost TF        U  3142
                                                        [18144] 4
                                                        PB VCDUs

                                                        **Recovered
                                                        in the .fcd
                                                        PPT file**

 142-16:25   43  DR#            4     0 - A bad         - Lost TFs       S  3147
                 A02678                 interface       [19089,
 16:40                                  between the     19091 ->
                                        GTC and the     19093] 14
 -> 17:03                               AMMOS GIF       PB & 1
                                        required a      Priority
                                        reboot of the   VCDUs
                                        GTC & BTD.

 143-02:55   63  DR#           30     0 - The IF        - Lost TFs       A  3147
                 L02116                 converter was   [19244 ->
 -> 06:39                               inop. The       19273] 94
                                        station had to  PB & 6
                                        replace the IF  Priority
                                        module to       VCDUs
                                        restore
                                        operability.

 147-11:06   14                 2       - FCD1 was      - Lost TFs       S  3152
                                        inoperative.    [20377 &
 -> 11:17                               It was rebootd  20378] 8 PB
                                        to restore.     VCDUs

 147-20:58   43  DR#           40     0 - FSR1 disk 2   - Lost TFs       H  3152
                 A02694                 failed. The     [20564 ->
 -> 23:14                               disk was        20603] 154
                                        swapped out to  PB, 4
                                        restore.        Priority, &
                                                        2 RTS VCDUs

                                        The s/c
                                        entered safing
                                        at
                                        148/21:14:44z
                                        and remained
                                        in safing
                                        until
                                        149/20:03:15Z

 150-02:38   63                 8     0 - DGT tlm prdx  - Lost TFs     UPA  3154
                                        were built for  [20871 ->
 -> 04:28                               the incorrect   20878] 16
                                        bit rate--80    Priority &
                                        vs 20bps. The   2 RTS VCDUs
                                        error was in
                                        the project
                                        keyword file.

 150-16:31   43                 8     0 - TWNC off and  - Lost TFs     UPA  3154
                                        rate change to  [20932 ->
 -> 17:07                               80bps.          20939] 5
                                                        Priority
                                                        VCDUs

 TOTAL                        185    46

                                        Total Science   10824.75
                                        Frames:

                                        Total Frames    12880
                                        (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
