GE-12/15/97 E11 Science Data Losses 306-16:41 --->349-08:26; Lost TFs in brackets[.....] Changes in Bold Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 306-22:24 14 DR# 41 2 - The sta - Lost TFs A 2946 G02932 utilized the [46366 -> -> b/u maser for 46369, 46371, support. 46373 & 307-02:25 46374, 46385 & 46386, 46395 -> 46426] 159 RTS & 5 Priority VCDUs **Recovered TFs [46385 & 46386] from the .btd PPT file - 8 RTS VCDUs 307-03:01 43 DR# 11 0 - Unknown - Lost TFs U/A 2946 A01947 [46442 -> -> 03:41 - The low 46450, 46452, signal level 46465] 41 RTS input to the VCDUs array from DSS14 may have been a contributing factor to this outage. 307-14:21 43 1 0 - Rate change - Lost TF S 2946 60-32bps [46798] 2 RTS & 2 Priority VCDUs 307-18:18 63 DR# 23 0 - Heavy rain - Lost TFs W 2946 L01551 [46844 -> -> 21:16 46846, 46849 -> 46853, 46862, 46869 -> 46882] 67 RTS & 4 Priority VCDUs 308-02:27 43 DR# 4 0 - Rate change - Lost TFs S 2947 A01954 60-120bps [46941 -> -> 02:38 46944] 15 RTS & 1 Priority VCDUs 308-07:51 43 DR# 21 0 - FSR2 halted - Lost TFs S 2947 A01955 operation and [47122 -> -> 08:25 was unable to 47141] 80 RTS be restored. VCDUs Also Rain may have played a part in the outage as shortly after (1 TF time) rain started to degrade the signal. 308-08:27 43 DR# 37 1 - Heavy rain - - Lost TFs W 2947 A01956 monsoon [471 43 & 471 -> 12:20 44, 471 97 -> 47223, 47265, 47273 -> 47278, 47303] 103 RTS & 3 Priority VCDUs **Recovered TF [47265] from .btd PPT file 4 RTS VCDUs 309-02:24 43 DR# 331 233 - Continuous - Lost TFs S 2948 A01959 GTC problems [47434 -> -> 14:26 of a 47471, 47475 non-specific -> 47477, nature 47481 -> affected the 47483, 47487 entire -> 47506, support. After 47510 -> on GTC reload 47524, 47528 39 TFs were -> 47530, forwarded to 47534 -> JPL. 47536, 47540 -> 47542, 47546 -> 47548, 47552 -> 47577, 47580 -> 47582, 47586 -> 47588, 47592 -> 47594, 47595 ->47803] 1179 RTS & 18 Priority VCDUs **Recovered TFs [47475 -> 47477, 47481 -> 47483, 47487 -> 47506, 47510 -> 47524, 47528 -> 47530, 47534 -> 47536, 47540 -> 47542, 47546 -> 47547548, 47552 -> 47554, 47580 -> 47582, 47586 -> 47588, 47592 -> 47504, 47601, 47603, 47607, 47610, 47613 -> 47755, 47771 -> 47801] from .btd PPT file -- 16 Priority VCDUs & 803 RTS VCDUs ** 310-02:34 43 DR# 14 0 - The BTD hung - Lost TFs S 2949 A01965 and required a [47909 -> -> 03:07 reboot to 47920, 47924 restore & 47925] 56 operability. RTS & 1 Priority VCDUs Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 310-06:02 43 DR# 71 0 - The station - Lost TFs S 2949 A01966 reported low [48013 -> -> 06:07 snr as DSS's 48015, 48039, 42 & 34 were 48060 -> 06:57 unable to 48126] 217 maintain RTS & 5 07:45 signal detect. Priority During the VCDUs -> 10:18 period of the outage DSS's 42 & 34 were removed from, and restored to, the array. After restoral to the array of DSS42 tlm locked up once again, 310-06:12 43 DR# 5 1 - Rate change - Lost TF JN 2949 A01967 160-120bps [48018] 4 RTS 11:12 VCDUs - Rate change -> 11:22 120-80bps - Lost TFs [48151 -> 12:16 - Rate change 48153] 12 RTS 80-60bps VCDUs - Lost TF [48170] 3 RTS & 1 Priority VCDUs Recovered TF [48018] from .btd PPT file --4 RTS VCDUs 310-13:24 43 2 0 - Rate change - Lost TFs JN 2949 60-40bps [48185 & -> 13:36 48186] 8 RTS VCDUs 310-14:03 43 1 0 - Rate change - Lost TF JN 2949 40-20bps [48191] 3 RTS & 1 Priority VCDUs 310-21:07 63 DR# 3 0 -Antenna to - Lost TFs A 2949 L01565 brake at pad # [48251 -> -> 21:29 3. The antenna 48253] 3 RTS, was moved past 1 Priority, & the debris and 1 RRCC VCDUs resumed tracking by 21:07z. 310-21:55 14 DR# 5 0 - Unscheduled - Lost TF A 2950 N44491 mode changes [48257] 4 RTS 22:29 due to: VCDUs 311-00:46 1) DSS63 to - Lost TF brake [48262] 4 RTS -> 01:06 VCDUs 2) Uncompensated - Lost TFs uplink sweep [48282 -> by DSS14 48284] 12 RTS VCDUs 311-02:08 43 DR# 54 0 - A frequency - Lost TFs SPA 2950 A01970 offset was [49294 -> -> 04:38 necessary to 48347] 160 compensate for RTS & 4 encounter Priority dynamics. The VCDUs correct frequency offset required some tweaking before it was identified. 311-05:32 43 DR# 8 0 - Rate change - Lost TFs JN 2950 A01972 120-80bps [48371 & -> 05:39 48372] 7 RTS - Rate change & 1 Priority 06:06 80-60bps VCDUs -> 06:14 - Rate change - Lost TFs 60-80bps [48381 & 07:04 48382] 6 RTS - Rate change VCDUs -> 07:16 80-60bps - Lost TFs 09:26 [48395 & 48395] 5 RTS -> 09:34 VCDUs - Lost TFs [48435 & 48436] 6 RTS VCDUs 311-08:18 43 DR# 6 3 - PEC angle - Lost TFs JN 2950 A01974 <.10 degrees [48415, 08:31 48419, 48425 -> 48431] 13 09:05 RTS & 1 Priority -> 09:16 VCDUs **Recovered TFs [48425, 48427 & 48428] from .btd PPT file -- 12 RTS VCDUs 312-06:06 43 1 0 - Rate change - Lost TF JN 2951 40-20bps [48583] 4 RTS VCDUs 312-16:35 63 3 3 - The FCD1 - Lost TFs S 2952 never achieved [48619, 48622 18:18 lock during & 48623] 8 this support. RTS & 2 -> 18:52 The GTC merge Priority anomaly VCDUs probably accounted for **Recovered the loss of from .btd PPT the three TFs file** accounted for in this entry. The PPT may include them. Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 313-02:06 43 1 0 - Rate change - Lost TF JN 2952 40-120bps [48678] 3 RTS & 1 Priority VCDUs 313-02:14 43 DR# 2 0 - PEC angle < - Lost TF JN 2952 A01978 .10 degree [48680] 4 RTS 02:23 VCDUs - Lost TF [48684] 4 RTS VCDUs 314-12:33 43 1 0 - Rate change - Lost TF JN 2952 80-60bps [49063] 4 PB VCDUs 314-13:32 43 2 0 - Rate change - Lost TF JN 2953 60-40bps [49076] 4 PB 13:47 VCDUs - Rate change 40-20bps - Lost TF [49078] 4 PB - PEC angle < VCDUs .10 degrees 315-04:52 43 1 0 - Rate change - Lost TF JN 2953 160-120bps [49280] 4 PB VCDUs - PEC angle < .10 degrees 316-04:34 43 2 0 - The station - Lost TFs U 2955 was late [49621 & -> 04:38 acquiring 49622] 6 PB & signal detect 2 Priority after VCDUs completion of the Delta DOR. 316-07:47 43 4 2 -PEC angle < - Lost TFs JN 2955 .10 degrees [49689 -> -> 08:00 49692] 15 PB & 1 Priority VCDUs **Recovered TFs [49689 & 49692] from the .btd PPT file** 8 PB VCDUs 317-08:28 43 3 0 - PEC angle < - Lost TFs JN 2956 .10 degrees [50034 & -> 08:35 50035] 8 PB VCDUs 08:39 - Lost TF [50037] 4 PB VCDUs 318-02:43 43 2 0 - Rate change - Lost TFs JN 2957 60-80bps [50257 & -> 02:47 50258] 8 PB VCDUs 318-09:57 43 21 6 - PEC angle - Lost TFs JN 2957 <.10 degrees [50386, -> 13:30 50393, 50395, 50402 & 50403, 50406 & 50407, 50417 -> 50419, 50424, 50426 & 50427, 50433, 50437 -> 50434] 83 PB & 1 Priority VCDUs **Recovered TFs [50393, 50424, 50426, 50427, 50439, & 50434] from the .btd PPT file. 24 PB VCDUs 318-12:30 43 1 0 - Rate change - Lost TF JN 2957 80-60bps [50430] 4 PB VCDUs 321-01:46 43 DR# 92 - DSS43 was - Lost TFs U 2960 A02003 unable to [51191 -> -> 05:35 provide tlm 51282] 361 PB throughout the & 7 Priority entire first VCDUs 80bps period and the entire **FSR tapes 120bps period. requested** - The snr's throughout the stated time period were 2-3 db from predicted. - The PEC was ~ .08 degrees - The s/c was in the Io plasma torus occultation during that time period. 322-11:22 43 19 0 - PEC angle < - Lost TFs JN 2961 .10 degrees [51682, 51684 -> 13:40 -> 51689, - Io torus 51698 -> 51704, 5151710 -> 51713] 72 PB & 3 Priority VCDUs 322-14:03 63 2 0 - PEC angle < - Lost TFs JN 2961 .10 degrees [51716 & -> 14:16 51717] 7 PB & - Io torus 1 Priority VCDUs Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 322-16:12 63 1 1 - Unknown - Lost TF U 2961 [51735] 4 PB VCDUs **Recovered from .btd PPT processing** 322-01:20 43 DR# 5 0 - CMC red - Lost TFs H 2962 A02008 therefore the [51818 -> -> 02:06 station was 51822] 10 PB unable to & 9 Priority distribute VCDUs prdx to the pointing assembly. The station was on point by 02:01z. 322-07:54 43 5 0 - PEC angle < - Lost TFs JN 2962 .10 degrees [51923 -> -> 08:12 51926, & 51928] 19 PB & 1 Priority VCDUs 324-17:14 63 DR# 1 0 - PEC angle ~ - Lost TF JN 2963 L01614 .065 degrees [52396] 4 PB VCDUs 325-12:44 43 1 1 - PEC angle ~ - Lost TF JN 2964 .065 degrees [52707] 4 PB VCDUs **Recovered in the ,btd PPT file** 326-10:47 43 3 3 - Large number - Lost TFs JN 2965 of R/S [53022 -> -> 10:57 corrections 53024] 12 PB and multiple VCDUs passes through the R/S to **Recovered decode in the .btd throughout PPT file** this time period. - PEC angle ~ .065 degrees 326-22:17 14 DR# 77 0 - The uplink - Lost TFs PD 2966 G03012 was LCP vice [53133 -> -> RCP. This 53206] 288 PB 327-03:21 decreased the & 10 Priority downlink agc VCDUs by about -20db. - Two mode changes, 1-way & 2-way, when the txr first turned off and then for the resweep in RCP. 326-13:16 43 1 0 - Unknown - Lost TFs U 2966 [53389] 4 PB VCDUs 327-13:20 63 19 19 - The GTC was - Lost TFs S 2966 rebooted as no [53390, 53392 -> 16:30 tlm was being -> 53395, output to JPL. 53397 -> 53400, 53403 -> 53405, 53408 -> 53410, 53412 -> 53415] 72 PB & 4 Priority VCDUs **Recovered from the .btd PPT file** 328-01:26 43 DR# 2 2 - Unknown - Lost TFs U 2967 A02020 53506 & -> 01:31 - Large R/S 53507] 8 PB corrections VCDUs - PEC angle ~ **Recovered .105 degrees from the .btd PPT file** 328-13:17 63 DR# 2 0 - Heavy rains - Lost TFs W 2967 L01620 accompanied by [53738 & -> 13:35 high SNT 53739] 7 PB & 1 Priority VCDUs 329-12:58 63 DR# 13 0 - The station - Lost TFs A 2968 L01626 was on the Mod [54089 -> -> 14:40 3 maser from 54101] 49 PB BOT (1255z) & 3 Priority until ~14:20z. VCDUs 330-05:57 43 2 0 - Heavy rains - Lost TFs W 2968 accompanied by [54309 & -> 06:04 high SNT 54310] 8 PB VCDUs 330-12:57 43 1 0 - Rate change - Lost TF S 2969 40-20bps [54426] 4 PB VCDUs 330-16:38 63 DR# 2 2 - Comm lines - Lost TFs GCF 2969 N44674 down between [54456 & -> 16:58 JPL and SPC60 54457] 8 PB from 16:56z - VCDUs 17:10z. **Recovered from the .btd PPT file** 330-20:05 14 3 3 - Unknown - Lost TFs U 2970 [54483, 54485 -> 22:31 & 54486] 2 Priority VCDUs **Recovered from the .btd PPT file** Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 331-05:22 43 1 0 - Rain and - Lost TF W 2970 high [54581] 4 PB subsequent SNT VCDUs 331-11:14 43 DR# 23 0 - The Complex - Lost TFs F 2970 A02027 master timing 54685 -> -> 13:10 reference 54707] 89 PB failed. No & 3 Priority restoral prior VCDUs to scheduled EOT. 333-09:47 43 4 0 -Rain and - Lost TFs W 2972 subsequent [55367 -> -> 10:01 high SNT 55370] 16 PB VCDUs 335-17:50 63 DR# 1 0 - The station - Lost TF A 2974 L01637 utilized the [56141] 4 PB Mod3 maser in VCDUs place of the prime. Less gain less data. 336-00:54 43 DR# 6 0 - The FSC core - Lost TFs S 2975 A02045 task failed to [56218 -> -> 01:09 initialize 56223] 24 PB properly. The VCDUs entire DGT was rebooted to restore. 336-15:36 63 DR# 2 0 -Rate change - Lost TFs S 2975 L01639 40-60bps [56494 & 16:40 56506] 8 PB A - The station VCDUs utilized the Mod3 maser in place of the prime. Less gain less data. 337-00:45 14 FR# 09203 46 46 - The TIS, - Lost TFs I 2976 43 and, or GIF [56601 -> -> 02:30 halted and 56646] 141 PB required a & 4 Priority reboot to VCDUs restore operability. **Recovered from the .fcd PPT file** 338-12:25 63 FR# 8910 4 4 - The BCS task - Lost TFs I 2977 halted and [57211 -> -> 13:12 needed to be 57217] 15 PB restarted to & 1 Priority restore VCDUs dataflow. **Recovered from .fcd PPT file** 338-19:57 14 DR# 2 0 - The antenna - Lost TFs A 2978 G03061 was off-point [57275 & -> 20:16 due to 57276] 8 PB unspecified VCDUs reasons. Probably related to DR# G03060. 338-21:54 14 DR# 2 0 - Late 2-way - Lost TFs A 2978 G03060 mode change as [57291 & -> 22:08 the station 57292] 6 PB & was unable to 1 Priority complete txr VCDUs calibration without the pre-cal time. 339-05:24 43 DR# 1 0 - The FSC was - Lost TF S 2978 A02059 unable to [57436] 4 PB correlate this VCDUs frame for an unknown reason. 339-10:33 43 DR# 18 1 - These TFs - Lost TFs LM 2978 A02061 may have been [57572 -> -> 10:45 lost due to 57576, 57578 low link -> 57584, 10:47 margin and 57603 -> associated 57608] 73 PB -> 11:03 high datarate & 1 Priority of 120bps. The VCDUs 12:04 SNR's averaged -6.6db **Recovered -> 12:26 throughout TF [57576] 4 this period. PB VCDUs from .btd PPT - Also the R/S file** decoder was laboring through 3-4 passes during this time to produce a valid TF. 340-04:09 43 DR# 3 0 - DSS14 had a - Lost TFs A 2979 G03068 bad module [57854 -> -> 04:16 within the 57856] 12 PB downconverter VCDUs which caused loss of usable array ininput. 340-12:25 63 DR# 6 0 - The - Lost TFs A 2979 L01653 subreflector [57999 -> -> 13:20 was 58004, 58017] incorrectly 23 PB & 1 14:42 positioned. Priority VCDUs - The u/l had to be reswept due to incorrect subreflector positioning 340-19:30 14 2 0 - Unknown - Lost TFs U 2980 [58060 & -> 19:49 58061] 8 PB VCDUs Time (GMT) DSS Reference RT Rcvd Events Comments Cause Pass TFs # Lost from PPT 342-00:48 43 1 0 - Unknown - Lost TF U 2981 [58511] 4 PB VCDUs 344-03:32 43 2 0 - The station - Lost TFs U 2983 was acquiring [59329 & -> 03:37 the downlink 59330] 3 PB & after 2 Priority completing the VCDUs Delta DOR activity. 344-09:26 43 FR #90471 26 - The BCS - Lost TFs I 2983 function [59441 -> -> 10:58 halted and it 59466] 100 was restarted PB, 2 RTS & 2 to restore Priority operability. VCDUs 346-12:11 63 1 - Unknown - Lost TF U 2985 [60252] 2 PB &1 Priority VCDUs 348-06:09 43 DR# 3 - Heavy rain - Lost TFs W 2987 A02088 and subsequent [60717, 60722 -> 06:32 high SNT & 60723] 12 PB VCDUs TOTAL 1087 333 Total Science 12233.25 Frames: Total Frames 14716 (including Fill): PP - Procedural (Project) Transfer Frames #s lost in brackets [.........] PD - Procedural (DSN) H - H/W Related/Failure A - Antenna Problem S - DGT S/W Related; Error or understood idiosyncracy/workaround/constraint 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 LM - Link Margin