October 1994
1 October KEP EPAC detector C switch off - 274.00:42 SCET.
2 October Nutation damping operations.
3 October KEP EPAC IFC - 276.01:21 SCET.
DSS 42 - Subreflector assembly stuck in position. Approx.
1 hour unrecoverable realtime data loss while DSS 45 was
brought up as a replacement. DR J4619. 276.22:40 to 23:40
SCET.
4 October Nutation damping operations.
DSS 45 - approx 15 minutes realtime data loss due to
uplink reaquisition after DSS 42 failure. 277.00:10 and
277.01:10 SCET.
5 October HED calibration - 278.01:00 SCET.
6 October Nutation damping operations.
Launch - fourth anniversary. At 90.279.11:47:16 UT the
Ulysses/PAM-S/IUS composite lifted off from Kennedy Space
Center aboard STS-41 "Discovery". The mission went on to
be an enormous success... .
7 October Nutation damping operations.
8 October GRU2 heater 1 switch off - 281.00:30 SCET.
9 October Nutation damping operations.
10 October KEP EPAC IFC.
GLG heater 2 switch off - 283.14:21 SCET.
Sun sensor gain switching to Low gain:
Disable conscan - 283.15:20:09 SCET.
Dump SPIN work area - 283.15:24:09 SCET.
Switch BAM-E to internal sun pulse - 283.15:25:21 SCET.
Switch sun sensor gain to LOW - 283.15:30:42 SCET.
* Spin Fail Detect tripped on-board.
* Latching valve 1 closed autonomously.
* DNEL 5, REC 6 - 283.15:31:18.465 SCET.
CRP 9702 DNEL Recovery; platform safing:
Tx1 spacecraft telemetry ON - 283.16:48 ETT.
Configure for conscan on AOCS2 - 283.16:49 ETT.
Reacquired telemetry, DSS 75 Kourou - 283.17:12 SCET.
Reacquired telemetry, DSS 45 Canberra - 283.17:17 SCET.
Total of 1h45m 1024bps science lost: 283.15:33-17:18 SCET.
Enable conscan - 283.18:40 SCET.
Latching valve 1 on - 283.18:41 SCET.
Power reconfiguration to 10W EPD 283.18:50 SCET.
Dump PT & BT - 283.18:58 SCET.
Main Switch on - 283.19:29 SCET.
Deschedule Watchdog quality program - 283.19:31 SCET.
Arm watchdog protected memory - 283.19:33 SCET.
Reload PT & BT - 283.19:51 SCET.
Disarm watchdog.
Schedule WDQ.
Schedule REC.
Payload converter switch on:
SIM4 converter 1 on.
Z139 - 283.22.16:46 SCET.
Z028 000E - 283.22.21:52 SCET.
Z028 000D - 283.22.23:52 SCET.
Z028 001D - 283.22.25:53 SCET.
Z028 004F - 283.22.27:52 SCET.
STO 1A on. (STO6 heater will remain off).
STO 1B on.
Z143 - 283.22.32:53 SCET.
Z145 - 283.22.33:32 SCET.
Z037 - 283.22.34:08 SCET.
HED 1/3 on.
HED 2/4 on.
Q6100 - 283.22.38:20 SCET.
Z119
Z123
Z016 0285
*HED inst reconfigured (CRP HED 35 completed).
LAN on.
Z135 - 283.22.43:16 SCET.
*LAN inst reconfigured (CRP LAN 32 completed).
KEP on.
Z131 - 283.22.48:11 SCET.
Z021 8040 - 283.23.04:10 SCET.
BAM-I on.
Z107 - 283.22.53:11 SCET.
HUS on.
Z127 - 283.22.58:52 SCET.
GRU on. (GRU1 heater will remain off).
Z113 - 283.23.06:30 SCET.
GLG on. (GLG heaters will remain off).
Z109 - 283.23.27:37 SCET.
Z008 8004 - 283.23.28:17 SCET.
Return to AOCS1 and Tx2:
Dump SPIN work area - 283.23:35 SCET.
11 October Disable conscan - 284.00:15 SCET.
Control electronics off - 284.00:17 SCET.
Switch to AOCS1:
Deschedule REC - 284.00:20 SCET.
Sun sensor switch off
Processing Electronics switch off
AOCS converter 2 off/1 on
PE-1 on
Sun sensor switch on
Configure AOCS1 for conscan - 284.00:25 SCET.
Catalyst bed preheating - 284.00:29 SCET.
Tx1 off/2 on - 284.01:14 SCET.
Dump PT & BT - 284.01:16 SCET.
Deschedule WDQ - 284.02:00 SCET.
Arm watchdog - 284.02:01 SCET.
Reload PT & BT - 284.02:02 SCET.
Disarm watchdog - 284.02:46
Schedule WDQ - 284.02:48
Schedule REC - 284.02:51
Experiment reconfiguration:
GLG all detectors on, TAC slope nominal
Z007 0784 - 284.03.59:53 SCET.
BAM-E on.
Z105 - 284.04.07:15 SCET.
Z010 AA00 - 284.04.10:14 SCET.
BAM-I to pre-DNEL config
Z004 3300 - 284.04.14:07 SCET.
to
Z004 AA00 - 284.04.14:40 SCET.
BAM-E to pre-DNEL config
Z010 3300 - 284.04.19:07 SCET.
to
Z010 AA00 - 284.04.19:34 SCET.
GRU HV level 0
Z014 0190 - 284.04.25:02 SCET.
to
GRU test command
Z016 0600 - 284.04.26:02 SCET.
HUS 2A ULD & MLD thresholds
Z019 04F0 - 284.04.43:08 SCET.
HUS 2A LLD threshold & 2B to normal mode
Z019 0113 - 284.04.43:08 SCET.
HUS 2A HV1 to -1456V
Z019 4040 - 284.04.46:08 SCET.
GLG commands
Z009 9100 - 284.04.48.06 SCET.
Z009 07C8 - 284.04.48.23 SCET.
Z008 8684 - 284.04.48.38 SCET.
HUS 2A HV2 to -1474V
Z019 1046 - 284.04.51:06 SCET.
HUS LLD BRV & sample time
Z018 06B7 - 284.04.57:22 SCET.
HUS MLD BRV & sample time
Z018 1156 - 284.04.57:31 SCET.
HUS Op mode 1 command
Z018 0014 - 284.04.59.21 SCET.
*HUS inst reconfigured (CRP HUS 37 completed).
GRU channeltron HV to level 1
Z014 0191 - 284.05.27.04 SCET.
Z016 0600 - 284.05.27.13 SCET.
SIM HET reset sent by mistake
Z028 000E - 284.05.27.31 SCET.
BAM-E CEM & ANAL HV low level
Z010 2203 - 284.05.40.04 SCET.
Z010 AA00 - 284.05.40.13 SCET.
BAM-I CEM & ANAL HV low level
Z004 2203 - 284.05.42.37 SCET.
Z004 AA00 - 284.05.42.47 SCET.
GLG MCP bias to level 1 & PAPS level 1
Z007 104C - 284.04.48.06 SCET.
Z008 0010 - 284.04.48.23 SCET.
KEP commands
Z021 A0A0 - 284.05.54.39 SCET.
Z024 - 284.05.55.39 SCET.
SIM KET HV1 ON
Z028 030A - 284.06.02.26 SCET.
GRU channeltron HV to level 2
Z014 0192 - 284.06.27.10 SCET.
Z016 0600 - 284.06.27.20 SCET.
BAM-E CEM HV level 1.
Z010 3301 - 284.06.30.28 SCET.
Z010 AA00 - 284.06.30.37 SCET.
BAM-I CEM HV level 1.
Z004 3301 - 284.06.31.55 SCET.
Z004 AA00 - 284.06.32.04 SCET.
*BAM-I inst reconfigured (CRP BAM 40 completed).
BAM-E CEM HV level 2.
Z010 3302 - 284.06.36.35 SCET.
Z010 AA00 - 284.06.36.44 SCET.
GLG PAPS on
Z012 - 284.06.38.25 SCET.
BAM-E CEM HV level 3.
Z010 3303 - 284.06.42.34 SCET.
Z010 AA00 - 284.06.42.43 SCET.
*BAM-E inst reconfigured (CRP BAM 39 completed).
SIM HV2 step 0 & KET HV2 ON
Z028 200A - 284.06.02.26 SCET.
Z028 050A - 284.06.02.26 SCET.
STO commands
Z031 A008 - 284.07.02.11 SCET.
to
Z033 0E54 - 284.07.07.07 SCET.
GRU channeltron HV to level 3
Z014 0193 - 284.07.27.10 SCET.
Z016 0600 - 284.07.27.19 SCET.
GRU commands - set point settings and test
Z014 0D0F - 284.07.29.06 SCET.
to
Z014 1DAF - 284.07.30.12 SCET.
Z016 0600 - 284.07.30.18 SCET.
GLG ADC trigger to T
Z007 1E3C - 284.07.33.09 SCET.
SIM HV2 step 1
Z028 210A - 284.07.44.10 SCET.
GLG MCP bias to level 2
Z007 1054 - 284.08.31.54 SCET.
SIM HV2 step 2
Z028 220A - 284.08.33.46 SCET.
*SIM inst reconfigured (CRP SIM 35 completed).
Note the planned SIM HET calibration was cancelled due to the
DNEL.
KEP RAM load IMOD-4
Z021 8080 - 284.09.20.08 SCET.
to
Z023 0F0F - 284.12.47.17 SCET.
GLG MCP bias to level 3
Z007 105C - 284.09.52.40 SCET.
GRU load new program
Z014 0700 - 284.13.20.04 SCET.
to
Z014 0918 - 284.14.48.37 SCET.
GRU read out memory
Z014 0700 - 284.15.20.06 SCET.
to
Z014 0A00 - 284.15.20.21 SCET.
KEP command mode 0 & IFC
Z021 2020 - 284.16.20.44 SCET.
Z024 - 284.16.22.49 SCET.
GRU activate new program (note it was later discovered that
the return to normal mode sequence had been omitted - see
later entry).
Z014 0705 - 284.17.42.53 SCET.
to
Z014 092E - 284.15.43.53 SCET.
KEP command mode 1 & RAM dump
Z021 A0A0 - 284.17.49.42 SCET.
Z024 - 284.17.50.48 SCET.
STO FES memory reload
Z033 0F00 - 284.18.25.48 SCET.
to
Z033 0F03 - 284.18.52.57 SCET.
STO daily sequence recommences - 284.19.54.09 SCET.
*STO inst reconfigured (CRP STO 36 completed).
GLG PAPS to 17.9 kV
Z008 8784 - 284.19.50.41 SCET.
KEP command mode 0
Z021 2020 - 284.19.58.25 SCET.
KEP det C off
Z022 4444 - 284.19.59.28 SCET.
Z023 4444 - 284.19.59.37 SCET.
GRU system reset command sent as return to normal mode
sequence had been omitted earlier.
Z014 6100 - 284.20:05 SCET.
GRU HV level 0
Z014 0190 - 284.21:16 SCET.
to
GRU test command
Z016 0600 - 284.21.16 SCET.
GRU channeltron HV to level 1
Z014 0191 - 284.22:16 SCET.
Z016 0600 - 284.22:16 SCET.
GRU channeltron HV to level 2
Z014 0192 - 284.23:16 SCET.
Z016 0600 - 284.23:16 SCET.
12 October Nutation damping operations.
GRU channeltron HV to level 3
Z014 0193 - 285.00:16 SCET.
Z016 0600 - 285.00:16 SCET.
GRU commands - set point settings and test
Z014 0D0F - 284.00:18 SCET.
to
Z014 1DAF - 285.00.19 SCET.
Z016 0600 - 285.00.19 SCET.
GRU load new program
Z014 0700 - 285.00:20 SCET.
to
Z014 0918 - 285.01:22 SCET.
GLG PAPS to 20.3 kV
Z008 0020 - 285.01:50 SCET.
GRU read out memory
Z014 0700 - 285.02:10 SCET.
to
Z014 0A00 - 285.02:10 SCET.
GRU return to normal mode & activate new program.
Z014 0706 - 285.04:14 SCET.
to
Z014 092E - 285.04:18 SCET.
*GRU inst reconfigured (CRP GRU 35 completed).
KEP GAS health check begins - 285.17:00 SCET.
13 October BAM-E CR #261: change count interval from 24ms to 20ms
Z010 5504 - 286.00:50 SCET.
GLG PAPS to 22.9 kV
Z008 0030 - 286.01:50 SCET.
*GLG inst reconfigured (CRP GLG38 completed).
NOTE: Spacecraft and all instruments now fully reconfigured
following DNEL5 on 10th October.
KEP GAS health check ends - 286.02:04 SCET.
SIM HET calibration - 286.16:10 SCET.
GRU noise test - 286.20:00 SCET.
14 October SIM LET calibration - 287.20:00 SCET.
15 October Nutation damping operations.
16 October Nutation damping operations.
17 October KEP EPAC IFC - 290.01:20 SCET.
DSS 43: From BOT, the antenna was declared red. Current
support is from Kourou only. No science data will be
available from 290.09:55 SCET via Kourou.
DSS43 was scheduled to track Ulysses for the next 2 days.
DSS 42 able to support from 290.17:05 to 291.00:10 SCET.
Science data available from 290.17:05 SCET.
7hr 10m data loss.
Spacecraft emergency declared at 290.20:00 UTC to get DSS 45
time to replace DSS 43.
Transferred to DSS 45 at 290.23:50 SCET.
First signs of self-sustaining nutation.
Levels of about 0.3 deg after the Kourou pass have risen by
about 10 per cent per hour for the next few hours.
Conscan operations brought this down to 0.1 deg or less.
18 October DSS 43 declared green. Transferred from DSS 45 to DSS 43
at 291.03.10 SCET and spacecraft emergency dropped.
Nutation damping operations.
19 October HED calibration - 292.01:00 SCET.
20 October Cold Case heater switch off:
Disable Spin Fail Detect - 293.15:20 SCET.
Deschedule REC - 293.15:22 SCET.
Switch on X wing heaters - 293.16:15 SCET.
Switch off 10W EPD.
Switch off Cold Case heater - 293.17:08 SCET.
Dump PT & BT - 293.17:11 SCET.
Deschedule WDQ.
Arm watchdog - 293.17:14 SCET.
Update PT & BT.
Disarm watchdog - 293.19:00 SCET.
Schedule WDQ.
Schedule REC - 293.19:03 SCET.
Enable Spin Fail Detect.
21 October Nutation damping operations.
22 October Nutation damping operations.
23 October Nutation damping operations.
24 October KEP EPAC IFC - 297.01:27 SCET.
25 October Nutation damping operations.
26 October GLG experiment heaters 1, 2, 3 on - 299.03:49 SCET.
GLG bakeout heater off - 299.03:59 SCET.
27 October Nutation damping operations.
Approx 3.75 hours data lost due to lightning strike at
station. Data lost from 300.13:20 - 17:10 SCET
Kourou station came up to support with Tx on at 14:20 ETT.
DSS43 came up to support with U/L handover at 17:30 ETT.
28 October GLG experiment heaters 1 & 3 on - 301.03:49 SCET.
Spacecraft Emergency declared due to lack of uplink, DSS 74
Santiago provided uplink support 301.05:55 to 10:45 SCET.
29 October Nutation damping operations.
Receiver problems at DSS45. Bad/missing data for periods:
302.01:25 - 01:35 SCET
302.04:30 - 04:50 SCET
302.05:15 - 05:50 SCET
302.20:20 - 20:40 SCET
30 October Nutation damping operations.
Receiver problems at DSS45. Bad/missing data for periods:
303.06:30 - 07:25 SCET
31 October KEP EPAC IFC - 304.01:19 SCET.
GLG experiment heater 3 on - 304.01:50 SCET
Receiver problems at DSS45. Bad/missing data for periods:
304.08:03 - 08:15 SCET