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am1weekly_2000-253_2000-259

Mission Operations Days: 2000/253 to 2000/259
September 09, 2000 00:00:00 GMT to September 15, 2000 00:00:00 GMT


NOTE: Band 14H (detectors 1-10) and Band 25 (detector 1) gain changes were made on day 256 (Sept. 12th) at approx. 18:17:46 GMT.


Terra Spacecraft and MODIS Instrument Status:

Terra (AM-1) is in Normal Ops Mode
MODIS is in Science Mode - A Side
Component State(s) Comment
Blackbody A On (290 K); B Off Nominal
Calibration Electronics A On; B Off Nominal
Control Processor A On; B Off Nominal
Nadir Door Unlatched, Open Nominal
Space View Door Unlatched, Open Nominal
Solar Diffuser Door Unlatched, Closed Nominal
FDDI Formatter A On; B Off Nominal
FDDI Port A On; B Off Nominal
FIFO Memory #1 & #2 On; #3 & #4 Off Nominal
Format Processor A On; B Off Nominal
Power Supplies #1 On, #2 Off Nominal
PV VIS FPA A On; B Off Nominal
PV NIR FPA A On; B Off Nominal
PV SMIR FPA A On; B Off Nominal
PV LWIR FPA A On; B Off Nominal
PC LWIR FPA A On; B Off Nominal
RC Outgas Heaters All Off (CS, IS, OS) Nominal
RC LWIR FPA Heater On (83 K) Nominal
RC SMIR FPA Heater Off Nominal
Scan Assembly A On; B Off Nominal
SDSM A Off; B Off Nominal
SRCA A Off; B Off Nominal
PS1 Survival Heater Enabled Nominal
PS2 Survival Heater Enabled Nominal
Timing Generator A On; B Off Nominal
Flight Software Rev BD + 3 sets of patches
  • FR Error Counting and Statistics (2 patches)
  • FR Band 14H Gain Change (10 commands)
  • FR Band 25 Gain Change (Detector #1) (1 command)
Nominal
Inhibit Ids Set None Nominal
TMONs Enabled 66, 67, 68 Nominal

This Week’s Completed MODIS Activities:

Saturday, September 9, 2000

None

Sunday, September 10, 2000

None

Monday, September 11, 2000

None

Tuesday, September 12, 2000

2000/256 14:12:44 Real-Time SMIR VDET/ITWK to 79/110
2000/256 14:38:44 ATC Load OA16 - SDSM Double Screened
2000/256 16:17:38 ATC Load OA15 - SDSM Double Open
2000/256 16:39:03 Real-Time SMIR VDET/ITWK to 110/226 (Nominal Operations)
2000/256 16:45:28 Real-Time Memory Dump of Table 4 (PV gains)
2000/256 18:17:46 Real-Time Set new Gain Values for Band 14H (detectors 1-10)
2000/256 18:19:49 Real-Time Set new Gain Value for Band 25 (detector 1)
2000/256 18:40:37 Real-Time Memory Dump of Table 4 (PV gains)

Wednesday, September 13, 2000

None

Thursday, September 14, 2000

None

Friday, September 15, 2000

2000/259 19:42:22 Real-Time Memory Dump, XIO Read Memory Fault Status
2000/259 19:43:30 Real-Time Memory Dump, XIO Read Memory Fault Address
2000/259 19:44:41 Real-Time Memory Dump, XIO Read OAS Register

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

Saturday, September 16, 2000

None

Sunday, September 17, 2000

None

Monday, September 18, 2000

2000/262 05:05:12 ATC Load - Set Formatter to Night Rate 00:03:15 early (for 50/50 SSR buffer)
2000/262 05:35:22 ATC Load - Set Formatter to Day Rate (for Lunar Roll)
2000/262 05:35:24 ATC Load - Set SCIABNORM Flag to ABNORM
2000/262 05:35:26 ATC Load - PC DC Restore OFF
2000/262 05:35:28 ATC Load - PV DC Restore OFF
2000/262 05:35:30 ATC Load - Sector Rotation to -3072 (EA to SV and OBCs)
2000/262 05:41:44 ATC Load - Sector Rotation to 0 (Normal)
2000/262 05:41:46 ATC Load - PC DC Restore ON
2000/262 05:41:48 ATC Load - PV DC Restore ON
2000/262 05:41:50 ATC Load - Set SCIABNORM Flag to NORM
2000/262 05:41:52 ATC Load - Set Formatter to Night Rate (for Lunar Roll)
2000/262 06:01:09 ATC Load - Set Formatter to Day Rate 00:03:15 late (for 50/50 SSR buffer)

Maneuvers:

The next roll maneuver to view the moon through the space view port is scheduled for September 18th (2000-262, 05:29:56 - 05:16:44 GMT).

MODIS Anomalies:

The first formatter error in 3-1/2 weeks was detected at 256-14:12:42. The software patch that is in place prevented a watchdog reset so operations continued nominally. The formatter temperature does not appear to have been abnormal at the time of the error.

General Instrument Comments:

MODIS is in Science Mode on the A-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches.

MODIS Telemetry Trends:

The Radiative Cooler intermediate stage temperature has slowly been increasing since approximately day 240. During this time the LWIR focal plane heater margin has been decreasing. The IOT is continuing to trend these telemetry mnemonics.

Non-MODIS Significant Events:

None

Limited Life Item Status:

SRCA 10W Lamp #1: 173.5 of 500 hours
SRCA 10W Lamp #2: 135.9 of 500 hours
SRCA 10W Lamp #3: 145.1 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours

SRCA 1W Lamp #1: 556.1 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours

Solar Diffuser Door: 1411 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements