Operations Day -- 1/1998 (1 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 1/1998 (January 1, 1998)
Mission Day -- 130
Orbit Number -- 98001
Pass Highlights: Station AOS LOS
D61 13:00 16:30
Pass Summary:
Today's pass was fairly nominal although there was a high number of VC2
frames dropped during the SSR playback (~30 frames were dropped in a dump
of 24 hours of data).
Anomalies:
Activities:
12:35 RTSW telemetry put on-line (D61)
13:00 Commanding enabled (D61)
13:09 Changed downlink format to ADC - 76k data rate
13:11 SSRA placed in record mode
13:15 SSRB placed in playback mode
13:16 Changed downlink format to Science
16:00 ADS software started for FDF
16:10 SSRA playback completed
16:11 Changed to ADC downlink format
16:20 ADS software terminated
16:22 Changed to RTSW downlink format - 434 data rate
16:30 EOT D61
BACK
Operations Day -- 2/1998 (2 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 2/1998 (January, 1998)
Mission Day -- 131
Orbit Number -- 98002
Pass Highlights: Station AOS LOS
D24 16:40 20:40
Pass Summary:
Nominal pass which included full SSR data recovery and a high-voltage
ramp-up session for the SWICS instrument. In addition, CRIS diagnostic
procedures were run at the request of the instrument team.
Anomalies:
Activities:
16:40 AOS D24
16:46 Downlink format changed ADC - 76k rate
16:52 SSRA placed in record mode
16:55 SSRB placed in playback mode
16:57 Downlink format changed to Science
17:11 CRIS diagnostic procedures started (error_cntr_dump & memory_snapshot)
17:24 CRIS diagnostic procedures completed
18:32 Started SWICS HV ramp-up session
18:36 Completed SWICS HV ramp-up
20:15 SSRB playback completed
20:16 Changed downlink format to ADC
20:30 Changed downlink format to RTSW - 434 rate
20:40 EOT D24
BACK
Operations Day -- 3/1998 (3 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 3/1998 (January 3, 1998)
Mission Day -- 132
Orbit Number -- 98002
Pass Highlights: Station AOS LOS
D24 16:40 20:40
Pass Summary:
DSN support for today's pass was nominal although a bad VC1 frame was
received that caused the MOC software to crash. SSR playback data lost
during the ten minutes it took to reboot the MOC was recovered after the
reboot.
Anomalies:
G-75 TPOCC crashed when bad VC1 frame received at MOC
Activities:
16:38 AOS D24
16:44 Changed downlink format to ADC - 76k rate
16:53 SSRB placed in record mode
16:57 SSRA placed in playback mode
17:01 Changed downlink format to Science
17:30 ADS software started for FDF
18:10 ADS software terminated
18:50 Changed toi Autonomy 1 and Autonomy 2 Housekeeping format to evaluate
bin states (nomnal)
18:56 MOC software crashed (bad VC1 frame received)
19:05 MOC software back up and running
19:50 SSRA playback complete
20:09 Changed downlink format to ADC
20:29 Changed downlink format to RTSW - 434 rate
20:40 EOT D24
BACK
Operations Day -- 4/1998 (4 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 4/1998 (January 4, 1998)
Mission Day -- 133
Orbit Number -- 98003
Pass Highlights: Station AOS LOS
D24 16:40 20:40
Pass Summary:
For the second consecutive day the MOC software crashed after receiving a
corrupted VC1 frame. Full SSR data recovery was achieved and C&DH A block
bins were dumped and checked against the GRI (nominal result).
Pass with no instrument activities
Anomalies:
G-076 TPOCC Packet Extractor crashed when corrupt VC1 frame arrived at MOC
Activities:
16:40 AOS D24
16:46 Changed downlink format to ADC - 76k rate
16:50 SSRA placed in record mode
16:53 SSRB placed in playback mode
16:55 Changed downlink format to Science
17:15 Started ADS software for FDF
17:27 Started C&DH A block bin dump (C&DH state-of-health check)
18:05 ADS software terminated
18:10 C&DH A block bin dump complete (no miscompares with GRI)
18:12 MOC software crashed (bad VC1 frame received)
18:17 MOC software restart complete
19:56 SSRB playback completed
19:57 Changed downlink format to ADC
2024 Changed downlink format to 434 bps RTSW
20:40 EOT D24
BACK
Operations Day -- 5/1998 (5 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 5/1998 (January 5, 1998)
Mission Day -- 134
Orbit Number -- 98005
Pass Highlights: Station AOS LOS
DS24 16:42 20:45
Pass Summary:
Completed a successful recorder dump. Performed a 2-part attitude
maneuver to repoint the HGA. Performed SWEPAM-I igh voltage ramp-up
activities
Anomalies: Failure of backup fanout 3 box over the weekend
necessitated a reboot. Reboot caused a break in data reaching ASC from
1843 to 1930. The connection was re-established on time to complete the
SWEPAM activities.
The IP NOCC is reviewing all the connectivity issues with ASC.
Activities:
1642 DSS24 AOS
1650 Commanded spacecraft to 87,648 bps ADC downlink format
1653 Turned on radial cat bed heaters
1655 Placed SSRB in record mode
1658 Placed SSRA in playback mode
1800 Started first attitude correction maneuver
1823 Started second attitude correction maneuver
1843 C. Spinolo started reboot of Fanout 3
1853 Commanded spacecraft to Science format
1928 Started SSR redump
1940 Ended SSR redump
1948 Start SWEPAM operations
2020 Ended SWEPAM operations
2026 Commanded spacecraft to Bin Dump format
2039 Commanded spacecraft to low rate RTSW downlink format
2045 DSS24 LOS
BACK
Operations Day -- 6/1998 (6 Jan 98)
Summary:
Today's pass include a ~3 minute telemetry drop-out during an SFG swap and
problems with the transfer of 5-16 Monitor block data from JPL to the MOC.
Changes had been made at DSN early in the mission as a patch to put Monitor
data in the same Isis group as Command Echo. Somehow this patch was undone
today and Monitor and Echo data began flowing over two separate streams which
is incompatible with the MOC software. Otherwise, today's pass was nominal
and included execution of CRIS diagnostic procedures.
Anomalies:
G98-001 (DR# Not Avail) JPL equipment swap out (SFG 1 to SFG 3) 3 min 3
sec loss of Telem etry
G98-002 (DR#G03216) D16 Power AMP failure ( loss of 1 min of command
capability)
Activities:
1611 AOS w/D16
1629 VC2 acquired at MOC - ADC Format
1634 SSR A placed in Record Mode
1639 SSR B placed in Playback Mode
1727 S/C commanded to SCIENCE Mode
1904 SSR B replay of missing frames started (all slices with missing frames
redumped)
1935 CRIS command operations (Error counter dump and memory snapshot
exectuted with no problems
1946 S/C commanded to ADC format
1953 Poke commands issued to active and inactive
2000 S/C commanded to RTSW format
2015 LOS
w/d16
-------------------
BACK
Operations Day -- 7/1998 (7 Jan 98)
Pass Summary:
For the second consecutive day DSN 5-16 Monitor blocks were not
transferred correctly to the ACE MOC. The Ops Chief and IP NOCC were
unable to help and the FOT was asked to call George Crouse at JPL (someone
who worked on the JPL Isis interface at one time), as he and Cris Spinolo
are the only ones who know what the correct configuration is for Monitor and
Echo data to be received at MOC. The FOT left a message for Mr. Crouse (who
is is no longer working on the Isis interface) to attempt to resolve this
problem. Otherwise, the pass was nominal and included execution of the CRIS
diagnostic procedures.
Activities:
1604 AOS w/D16
1614 VC2 acquired at MOC -- ADC downlink format -- 76k bit rate
1620 SSR B placed in RECORD mode
1624 SSR A placed in PLAYBACK
1650 CRIS Commanding executed - Cris error counter dump and memory snapshot
procedures
1701 S/C commanded to SCIENCE downlink format
1915 SSR A replay of missing frames completed - All slices with missing
frames redumped
1920 S/C commanded to ADC downlink format
1927 Poke commands issued to active and inactive
1931 S/C commanded to RTSW downlink format - 434 bit rate
1940 EOT w/
D16
-------------------
BACK
Operations Day -- 8/1998 (8 Jan 98)
Summary:
Nominal pass which included execution of high-voltage adjustment procedures
for the SWEPAM instrument and the nominal CRIS diagnostic procedures. In
addition, although the FOT was not informed of any changes, the DSN 5-16
Monitor data began arriving correctly at the MOC during this pass. A change
was made to put this data back in the Command Echo Isis group which is
required for proper processing in the ACE MOC. The FOT will follow up on this
problem
to determine how it was resolved and if any further actions are necessary to
make this configuration the 'standard' ACE Monitor block transfer
configuration.
Activities:
16:05 DSS16 AOS
16:22 Commanded spacecraft to ADC downlink format - 76k bit rate
16:23 Commanded SSR A to record mode
16:28 Commanded SSRB to playback mode
16:30 Commanded spacecraft to SCIENCE downlink format
17:00 Began SWEPAM operations
18:34 Completed SWEPAM operations
18:56 Began SSRB redump - 31 frames dropped
19:33 Began CRIS operations
19:42 Completed CRIS operations
19:50 Commanded spacecraft to ADC downlink format
20:04 Commanded spacecraft to RTSW downlink format - 434 bit rate
20:15 DSS16
EOT
-------------------
BACK
Operations Day -- 9/1998 (9 Jan 98)
Summary:
Nominal pass which included an attitude correction maneuver. In addition,
the FOT set the C&DH B selectable telemetry byte to point at the C&DH A
current reading. This was done as part of an ongoing investigation into
variations in the C&DH B current as read by C&DH A. The inactive selectable
telemetry byte will be used to see if the C&DH A current as read by C&DH B
has the same variations (it does not vary when read by C&DH A). If
variations are detected it may prove that the variations are more due to how
the 'opposite' C&DH reads the other C&DH's current.
Activities:
1620 AOS w/D24
1646 VC2 acquired at MOC -- ADC downlink format
1649 Rad catbed htrs enabled for Attitude manuever
1651 SSR B placed in RECORD mode
1655 SSR A placed in PLAYBACK mode
1730 Selectable telem byte on Inactive side set to CDH A Current (2107)
1758 Attitude manuever started
1802 Attitude manuever completed
1805 Rad catbed htrs disabled for completion of day manuevers
1849 S/C commanded to Science downlink format
2008 SSR OPS completed - 32 missing frames all frames redumped
2011 S/C commanded to ADC format
2017 Poke commands issued to active and inactive CDH's for LRT
2028 S/C commanded to RTSW format
2040 LOS
w/D24
-------------------
BACK
Operations Day -- 10/1998 (10 Jan 98)
Summary:
During today's pass the FOT dumped the active C&DH block bins (0
miscompares) - Checked autonomy bin enable/disable and fire flags and
executed a SWEPAM-I CEM level change. In addition, diagnostic
procedures were run for the CRIS instrument. Today's SSR playback contained
only 11 missing frames
Activities:
1318 AOS w/D66
1337 VC2 acquired at MOC - ADC downlink format
1339 SSR A placed in Record mode
1343 SSR B placed in Playback mode
1346 S/C commanded to Science downlink format
1350 Began dump of active C&DH block bins - unsuccessful due to VC1 frame
drop
1506 Restarted dump of active C&DH block bins - successful with 0
miscompares
1549 Executed OCR # 98- 0099 (SWEPAM ION CEM level adjust (CEM to level 0)
1555 Started ADS program (run time of 40 min)
1609 Checked autonomy bin enable/disable and fire flags
1606 SSR B playback complete (all missing frames redumped)
1614 CRIS command operations (CRIS error counter dump and memory snapshot
indicate no problems
1635 S/C commanded to ADC downlink format
1641 Poke commands issued to active and inactive C&DH and LRT
1647 S/C commanded to RTSW downlink format
1700 LOS w/D66
-------------------
BACK
Operations Day -- 11/1998 (11 Jan 98)
Summary:
The MOC software crashed during today's pass. Data began to buffer up in
TPOCC and event messages indicating a telemetry dropout were generated.
However Isis was queing up data during this period and then sporadically
TPOCC would start receiving data again. This steadily got worse throught out
the pass and at 15:25z the MOC software was restarted and appeared to fix
problem. This problem was also noted on day 009 but not as bad. It seems
that this problem occurs when ADS program is running. The FOT will
investigate the cause of this anomaly. Otherwise, today's pass was nominal
with no special activties scheduled.
Anomalies:
G98-003 TPOCC system Crash (SW recycled )
Activities:
1237 AOS w/D61
1306 VC2 acquired at MOC - ADC downlink format
1313 SSR A placed in Record mode
1317 SSR B placed in Playback mode
1329 S/C commanded to Science downlink format
1331 Started ADS software (run time 30 min)
1525 Terminated TPOCC software due to system being hosed
1533 TPOCC S/W reinititialized and receiving data
1558 Completed SSR B playback (redumped SSR from time when TPOCC was down -
Slices 475 - 527)
1559 S/C commanded to ADC downlink format
1605 Poke commands issued to active and inactive CDH (LRT)
1614 S/C commmanded to RTSW downlink format
1625 LOS w/D61
BACK
Operations Day -- 12/1998 (12 Jan 98)
Summary:
Commanding today was stopped 20 minutes early after the ground station
reported that the antenna was dropping below the 10 degree commanding mask.
The FOT was unaware that Madrid had this masking (the ACE NOPE had reported
pre-launch that only Goldstone had a 10 degree mask). The NOPE will be
contacted to ensure that FDF is using the correct masking when generating
Predicts for all sites. Otherwise, this was a nominal pass.
Anomalies:
G98-004 - Interlock limit reached at 16:53 due to 10 degree limit reached -
drive off, reacquired 1 way at this time.
Activities:
12:45 - AOS
13:20 - ADC format started, 76384 rate
13:29 - SSR A placed into record format
13:33 - SSR B dump started
16:00 - SSR B dump complete
16:32 - Redumps complete - 16 of 19 drops redumped
16:46 - RTSW format started, 434 rate
16:53 - Anomaly G98-004
17:10 -
EOT
-------------------
BACK
Operations Day -- 13/1998 (13 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 13/1998 (January 13, 1998)
Mission Day -- 142
Orbit Number -- 98013
Pass Highlights: Station AOS LOS
D16 17:29:52 21:35:00
Pass Summary:
SSR dump collected successfully. Performed selected instrument activities.
The Multi function Receiver 1 had power problems. The station switched to
MFR 2 and the problem cleared up.
Anomalies:
G98-0005 - Telemetry outage from 20:01 to 20:03 due to MFR1 problem at
site. MFRs were swapped, and telemetry came back in.
Activities:
17:29 - AOS
17:45 - ADC format started, 76384 rate
17:48 - SSR B placed in record format
17:52 - SSR A dump started
18:05 - SWICS high voltage activities started
18:09 - SWICS high voltage activities complete
20:01 - Anomaly G98-0005 - Telemetry outage
20:14 - OCR#98-0100 execution started (SEPICA error flag activity)
20:23 - OCR#98-0100 execution complete
20:45 - SSR A dump complete
21:12 - SSR A redumps complete
21:24 - RTSW format started, 434 rate
21:35 - EOT
BACK
Operations Day -- 14/1998 (14 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 14/1998 (January 14, 1998)
Mission Day -- 143
Orbit Number -- 98014
Pass Highlights: Station AOS LOS
D66 13:12:38 16:55:00
D16 16:00:00 18:15:00
Pass Summary:
Experienced numerous equipment problems with station D66. IMOC system
crashed repeatedly due to bad telemetry from the DSN TGC. After switching
to another TGC and rebooting it, valid data was received from D66.
Switched contact to station D16 to ensure successful completion of the
day's dump.
Anomalies:
G98-0006 - Station could not acquire 87648 telemetry with TGC1, swapped to TGC3
G98-0007 - TGC3 sent bad data to us, had to reboot TGC3 to correct problem.
Activities:
13:12 - AOS
13:25 - Anomaly G98-0006 - Station could not acquire on 87648 rate
13:50 - Resent commands to configure S/C for high rate
14:00 - Reconfigured S/C for 498 bit rate, RTSW
14:10 - Reconfigured S/C for 87648 rate, ADC format
14:21 - D66 swapped to TGC3, 87648 rate ADC telemetry seen
14:25 - TPOCC crash due to bad data from D66 TGC3
14:38 - another TPOCC crash due to bad tlm from TGC3
14:45 - Another TPOCC crash due to bad tlm
14:50 - Anomaly G98-0007 - Asked D66 to reboot TGC3
15:05 - Valid telemetry seen from D66
16:00 - AOS D16
16:20 - Telemetry off line from D66, tlm on line from D16
16:29 - SSR B dump complete
16:30 - Carrier transfer from D66 to D16
16:35 - SSR B redumps satrted
16:55 - EOT D66
17:36 - OCR#98-0101 executed - SEPICA alarm turn-off
17:45 - SSR B redumps complete
18:01 - RTSW format started, 434 rate
18:15 - EOT D16
BACK
Operations Day -- 15/1998 (15 Jan 98)
ACE FLIGHT OPERATIONS DAILY REPORT
Operations Day -- 15/1998 (January 15, 1998)
Mission Day -- 144
Orbit Number -- 98015
Pass Highlights: Station AOS LOS
D66 12:45:11 16:30:00
Pass Summary:
Performed the mission's first stationkeeping maneuver using the Axial
thrusters 1A, 2A. The maneuver lasted129 seconds. The maneuver was
successful. Executed the weekly attitude reorientation maneuver using
thrusters 2R, 4RP, 4RM.
The final spin rate is 4.94 rpm. A spin up was not deemed necessary
(constraint: 4.9 to 5.1 rpm)
Anomalies:
Activities:
12:45 - AOS
13:01 - Saw duplicate 434 VC1 frames, station swapped TCA channels
13:07 - ADC format started, 76384 rate
13:11 - Station doubled sweep range and reswept to get rcvr B in lock
13:15 - Axial catbed heaters on
13:16 - Radial catbed heaters on
13:17 - SSR B placed in record format
13:21 - SSR A dump started
14:17 - Station keeping maneuver complete
14:24 - Axial catbed heaters off
14:52 - Attitude reor complete
14:59 - Radial catbeds off
15:40 - SSR A dump complete
16:05 - SSR A redumps complete
16:22 - RTSW format started, 434 rate
ACE FLIGHT OPERATIONS DAILY REPORT - Addendum
Operations Day -- 15/1998 (January 15, 1998) Addendum
Mission Day -- 144
NOAA personnel contacted the FOT to inform us that the signal from the S/C
was lost at approximately 1920Z and that the air force station had been
unable to reacquire data
A pass was obtained with station D16 and following that with station D24.
DSN successfully locked on telemetry.
Analysis of the telemetry revealed that the loss of downlink acquisition
was due to the triggering of the RF watchdog reset on C&DH A.
Following the day's maneuvers the rf watchdog terminal count was left at 3
hours instead of 48 hours during the daily pass.
The rf watchdog trigger reconfigured C&DH A to the -Z broadbeam antenna and
switched to a data format which is not compatible with the air force
network (LR ADC) which is why NOAA lost the downlink. The S/C behaved
nominally.
To reconfigure the spacecraft to the nominal operations state: The FOT
reset the antenna configuration to its nominal state: C&DH-A on the High
Gain, C&DH-B on the -Z broadbeam.
All S/C subsystems and instruments were verified to be operating nominally.
The data rate was switched to RTSW.
Verified NOAA could again lock up on the RTSW data and terminated the contact.
All systems are nominal.
BACK
Operations Day -- 16/1998 (16 Jan 98)
Summary:
Today's pass included a 20 minute loss of telemetry due to the incorrect TGC
software being used at D61 and problems with Isis. During the remainder of
the pass the FOT performed high voltage ramp up sessions for the SWICS and
SWIMS instruments and diagnostic commanding for the CRIS instrument.
Anomalies:
G98-0008 - INIF router reboot from 14:07 to 14:13, no tlm during this time
Activities:
13:44 - AOS
13:55 - D61 TGC swap from TGC5 (w/out phase 2 software) to TGC1 (with phase 2
software)
14:07 - Anomaly G98-0008 - INIF router reboot
14:13 - Telemetry back on line
14:18 - ADC downlink format started, 76384 rate
14:22 - SSR A placed in record format
14:26 - SSR B dump started
14:38 - DPS restarted, due to previous session in idle mode
14:54 - Saw SEPICA alarm , attempted to contact M. Popeki - he was not there
14:57 - Started SWICS high voltage adjustments
15:13 - SWICS high voltage adjustment complete
15:13 - Started SWIMS high voltage adjustment
15:17 - SWIMS high voltage adjustment complete
15:20 - Started CRIS error dump procedures
15:27 - CRIS error dump procedure complete
15:49 - SWICS stepping table load procedure complete
16:20 - SWICS configuration change procedure complete
16:59 - SSR B dump complete
17:06 - SSR B redumps complete
17:10 - Autonomy bin 9 miscompare - Not reenabled after yesterday's firing
17:22 - RTSW downlink format started, 434 rate
17:30 - EOT
BACK
Operations Day -- 17/1998 (17 Jan 98)
Summary:
A four minute telemetry drop out was the only problem encountered today.
The RF Watchdog related autonomy bin on C&DH A that turns on the transmitter
after the first time-out was re-enabled during this pass (it had triggered
during the day 15 anomaly).
Anomalies:
G98-0009 - Telemetry outage from 17:11 to 17:15 due to pointing error at D16.
Station reloaded predict tables, and was able to lock up on the spacecraft.
Activities:
16:10 - AOS
16:25 - ADC downlink format started, 76384 rate
16:28 - SSR B placed in record mode
16:32 - SSR A dump started
16:38 - ADS started
16:55 - Attempted to contact M. Popeki about SEPICA alarm
17:09 - Switched to Autonomy 1 housekeeping format and re-enabled Autonomy
bin 9
17:11 - Telemetry outage - Anomaly G98-0009
17:15 - Telemetry received again
17:19 - Returned to Primary housekeeping format
17:30 - ADS terminated
19:40 - SSR A redumps complete
20:11 - RTSW downlink format started, 434 rate
20:20 -
EOT
-------------------
BACK
Operations Day -- 18/1998 (18 Jan 98)
Summary:
Nominal pass which included SEPICA commanding in response to alarm conditions.
Anomalies:
S98-0102 - SEPICA fan 1 pressure alarm went off, necessitating exercise of
fan pressure valves.
Activities:
16:12 - AOS
16:19 - ADC downlink format started, 76384 rate
16:23 - SSR A placed in record format
16:26 - SSR B dump started
16:32 - ADS software started
16:38 - SEPICA SSSPC3P parameter at 4.21 torr - less than at LOS on day 017
17:56 - OCR#98-0102 - SEPICA gas pressure valve exercising start
18:51 - OCR#98-0102 complete
18:51 - SSR B dump complete
19:18 - SSR B redumps complete
20:06 - RTSW downlink format started, 434 rate
20:15 - EOT
-------------------
BACK
Operations Day -- 19/1998 (19 Jan 98)
Summary:
Nominal pass which included high voltage ramp-up sessions for the SWICS and
SWIMS instruments along with commanding to the SWEPAM-I and SEPICA
instruments.
Activities:
171500 BOT
172351 S/C commanded to 76k ADC downlink format
172657 SSR B put in Record Operating Mode
173029 SSR A put in Playback Operating Mode
173430 S/C commanded to Science downlink format
180214 SWEPAM-I Command Operations Begun
183349 SWICS High Voltage Adjustment Begun
184428 SWICS Commanding completed
185738 SWEPAM-I Commanding completed
185758 SEPICA OCR # 98-0103 Begun
191156 SEPICA Commanding Completed
200512 SSR A Redumps Begun
202814 Redumps Completed
2029-05 S/C commanded to ADC Downlink Format
203533 Poke Command sent to Active C&DH
203550 Poke Command sent to Inactive C&DH
203922 S/C commanded to 498 RTSW Downlink Format
204500
LOS
-------------------
BACK
Operations Day -- 20/1998 (20 Jan 98)
Summary:
Today's pass was nominal with the exception that the D16 ranging
system was down for the entire pass. SWICS and SWIMS high voltage ramp up
sessions were completed today along with CRIS commanding to raise the matrix
detector threshold, SIS commanding to reset the hydrogen and helium timers,
and SWEPAM-I commanding to continue instrument characterization using the
on-board pulser.
Anomalies:
* DR # G03280 - Station called and informed MOC that their Range equipment
was Red.
Activities:
160000 BOT - D16
160510 S/C commanded to 76k ADC Downlink Format
160724 SSR A put in Record Operate Mode
161126 SSR B put in Playback Operate Mode
161913 S/C commanded to Science Downlink Format
172721 SWICS High Voltage Adjustment Begun
173332 SWICS High Voltage Adjustment Completed
173411 SWIMS upload of VFPS Stepping Table Begun
175112 SWIMS upload of VFPS Stepping Table Completed
180440 SWEPAM-I Commanding Begun
180909 CRIS/SIS OCR #98-0104 Begun
181558 CRIS/SIS OCR #98-0104 Completed
184122 SWEPAM-I Commanding Completed
184245 SSR B Redumps Begun
191559 SSR B Redumps Completed
191649 S/C Commanded to ADC Downlink Format
192540 Poke Command Sent to Active C&DH
192555 Poke Command Sent to Inactive C&DH
194657 S/C Commanded to RTSW
200000 EOT - D16
-------------------
BACK
Operations Day -- 21/1998 (21 Jan 98)
Summary:
An attitude maneuver was performed today that pushed the high-gain antenna
angle out to 3.9 degrees (violating the 3.5 degree requirement). There was no
observed impact on operations and FDF is analyzing why the maneuver performed
non-nominally. In addition, high voltage ramp up session were performed
today with the SWICS and SWIMS instruments.
Activities:
155500 BOT - D16
155857 S/C Commanded to 76k ADC Downlink Format
160119 SSR B put in Record Operate Mode
160458 SSR A put in Playback Operate Mode
160736 Radial Catbeds Powered ON
171409 Attitude Burn Begun
171947 Attitude Burn Completed
172241 Radial Catbeds Powered OFF
173919 S/C Commanded to Science Downlink Format
180914 SWICS High Voltage Adjustment Begun
181548 SWICS High Voltage Adjustment Completed
183111 SSR A Redumps Begun
191842 SSR A Redumps Completed
193217 S/C Commanded to ADC Downlink Format
193852 Poke Command sent to Active C&DH
193909 Poke Command sent to Inactive C&DH
194730 S/C Commanded to RTSW Downlink Format
195500 EOT - D16
-------------------
BACK
Operations Day -- 23/1998 (23 Jan 98)
Summary:
Nominal pass which included upload and testing of a software patch on the
SWEPAM instrument. The performance of the patch was not what was expected
and an OCR was performed at the instrument team's request to remove the patch.
Activities:
175000 BOT
175522 S/C Commanded to 76k ADC Downlink Format
175737 SSR B put in Record Operate Mode
180144 SSR A put in Playback Operate Mode
180833 S/C Commanded to Science Downlink Format
182019 SWEPAM Activities Begun
184621 SWEPAM Activities Completed
203722 SWEPAM OCR - 0103 Begun
203825 SWEPAM OCR - 0103 Completed
205209 SSR A Redumps Begun
212005 SSR A Redumps Completed
212806 Poke Command sent to Active C&DH
212835 Poke Command sent to Inactive C&DH
214001 S/C Commanded to ADC Downlink Format
214717 S/C Commanded to RTSW
215000
EOT
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Operations Day -- 26/1998 (26 Jan 98)
Summary:
Today's pass included a 50 minute telemetry outage during SWICS commanding.
This outage was caused by Nascom network problems. Although the FOT was able
to recover all of the day-25 SSR dump, today's problems prohibited the FOT
from completing the day-26 SSR dump. The result is that 1.5 hours of the
day-26 SSR dump will be moved to day-27's dump. At this point it will take
a number of nominal DSN contacts to retrieve all of this SSR data along with
the daily dumps.
Anomalies:
G98-013 49 minute telemtry outage due to ISIS(IP) routing protocol failure
Activities:
1608 AOS w/D16
1619 VC2 acquired at MOC - ADC format
1622 Performed redump of previous Day (025) missing slices
1655 Completed redump of previous day data
1658 Placed SSR A in PLAYBACK mode
1700 Placed SSR B in RECORD mode
1706 Command S/C to SCIENCE format
1721 Began SWICS command operations
1748 Tlm outage due to Routing Protocol in Nascom
1837 Tlm active again after routing protocol problem
1850 Completed SWICS command operations
1910 Issued SSR B abort BIT due to lack of time finish daily SSR B dump -
Need redump 513 - 628
1911 Completed SSR playback complete - with no redumps
1913 Commanded S/C to ADC format
1921 Issued poke commands for active and inactive
1931 Commanded S/C to RTSW format
1940 LOS
w/D16
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Operations Day -- 27/1998 (27 Jan 98)
Summary:
Today's AOS was 10 minutes later than scheduled due to problems at D66.
Once contact was established the FOT performed the nominal SSR playback
along with the playback of 1.5 hours of data from day 26 that had not yet
been recovered. To recover all of this SSR data the FOT scheduled an extra
one hour support with D16. A handoff was performed from D66 to D16 at
17:05z. Other activities today included an attitude maneuver and commanding
to the SEPICA instrument to restart the 30kV power supply due to an out-of-
limits current reading.
Anomalies:
10-minute delay in acquisition due to problems at DSS66.
Activities:
1350 DSS66 AOS
1354 Commanded spacecraft to 87,648 ADC downlink format
1356 Turned on cat bed heaters
1356 Placed SSRB in Playback mode (redump)
1501 Began attitude correction maneuver
1506 Completed attitude correction maneuver
1520 Completed redumps from yesterday
1520 Placed SSRB in record mode
1522 Placed SSRA in playback mode
1528 Placed spacecraft in Science downlink format
1636 SEPICA OCR #98-104 (reset alarm and restart 30kV power supply after
current went out of limits over the weekend).
1700 DSS16 AOS
1703 DSS66 data off-line
1704 DSS16 data on-line. Receiver B out of lock. Decided to postpone
resweep until SSR dumps completed.
1717 SEPICA operations continued
1732 Packet extractor crash in MOR. TPOCC software recycled.
1737 TPOCC back up and running
1740 Began SSR A redumps
1748 Telemetry dropout (6 min.) due to ISIS problem
1749 DSS16 reswept uplink. Receiver B acquired lock.
1752 SSR A redump aborted
1805 Commanded spacecraft to 498 RTSW downlink format
1810 DSS16 EOT
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Operations Day -- 28/1998 (28 Jan 98)
Pass Summary:
Nominal Pass. Performed instrument commanding to SIS, SWICS,SWIMS and SEPICA
Activities:
2110 AOS w/ D16
2120 VC2 acquired at MOC - ADC downlink format
2126 Started SSR Redump activities for Previous day (027) missing data
2204 Completed SSR Redump
2133 SSR A placed in RECORD mode
2138 SSR B placed in PLAYBACK mode
2153 S/C commanded to SCIENCE downlink format
2157 Executed OCR SWX-001 - Upload of new Fligh Load table for SWICS
2208 SWIMS load procedure executed
2213 SWICS and SWIMS command operations completed
2216 OCR 98-0104 executed for setting SEPICA 30 Kv Discharge Flag
2227 OCR SIS-001 executed for Lowering SIS matrices and thresholds
0043 SSR B playback completed
0045 S/C commanded to ADC downlink format
0052 Poke commands issued to active and inactive LRT
0104 S/C commanded to RTSW downlink format
0115 LOS w/ D16
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Operations Day -- 29/1998 (29 Jan 98)
Summary:
Nominal pass which included high-voltage ramp-up operations for the SEPICA
instrument.
Activities:
1910 DSS16 AOS
1926 Commanded Spacecraft to 87,648 bps ADC downlink format
1929 Placed SSR B in Record mode
1932 Placed SSR A in Playback mode
1934 Commanded spacecraft to Science downlink format
2006 SEPICA 30kV ramp-up operations (steps 9-12)
2222 Commanded spacecraft to ADC downlink format
2240 Commanded spacecraft to RTSW 498 bps downlink format
2252 DSS16
LOS
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Operations Day -- 30/1998 (30 Jan 98)
Summary:
Nominal pass which included SEPICA high voltage ramp up session
Activities:
2107 AOS w/ D42
2127 VC2 acquired at MOC - ADC downlink format
2131 SSR A placed in RECORD mode
2133 SSR B placed in PLAYBACK mode
2143 S/C commanded to Science downlink format
2218 Executed OCR # SEP-001 - (SEPICA 30 kv high voltage rampup)
0013 SSR B playback completed - no redumps due to time
0014 S/C commanded to ADC downlink format
0019 Poke commands issued to active and inactive for LRT
0031 S/C commanded to RTSW downlink format -498 bps rate
0040 LOS w/
D42
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Operations Day -- 31/1998 (31 Jan 98)
Summary:
Today's pass included almost 1.5 hours of degraded/dropped telemetry.
Telemetry flow problems at JPL prohibited the FOT from completing the
scheduled SSR data recovery - remaining SSR data will be recovered on day 32.
Anomalies:
Data dropouts from 1627Z to 1745Z due to problems at JPL Comm. Most of lost
SSR data was successfully redumped. DR number not available at end of shift.
Activities:
1537 DSS24 AOS
1600 Commanded spacecraft to 87648 bps ADC downlink format
1603 Placed SSR B in Record mode
1604 Placed SSR A in Playback mode
1612 Commanded spacecraft to Bin Dump downlink format
1627 Began repeated data dropouts due to equipment problems at JPL Comm
1714 Commanded spacecraft to Science downlink format
1745 JPL Comm switched to "Little Pipe." Normal data flow resumed.
1758 Began SSR A redumps. All except 8 minutes of lost dumps recovered
(remainder to be dumped on day 32)
1901 Commanded spacecraft to 498 bps RTSW downlink format
1910 DSS24 LOS
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