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am1weekly_2000-274_2000-280

Mission Operations Days: 2000/274 to 2000/280
September 30, 2000 00:00:00 GMT to October 06, 2000 00:00:00 GMT

New Gain Values For Bands 24, 25, and 27

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 + 5 sets of patches
  • FR Error Counting and Statistics (2 patches)
  • FR Band 14H Gain Change (10 commands)
  • FR Band 24 Gain Change (10 commands)
  • FR Band 25 Gain Change (10 commands)
  • FR Band 27 Gain Change (10 commands)
 Nominal
Inhibit Ids Set None Nominal
TMONs Enabled 66, 67, 68 Nominal

This Week’s Completed MODIS Activities:

Friday, September 29, 2000

2000/273 20:19:27 ATC Load OA-15: SD/SDSM Open
2000/273 21:58:20 ATC Load OA-16: SD/SDSM Screened

Saturday, September 30, 2000

None

Sunday, October 1, 2000

None

Monday, October 2, 2000

None

Tuesday, October 3, 2000

2000/277 17:29 Real-Time Gain Changes (Band, Channel, New Value):

  • 24, 1, 98
  • 24, 2, 91
  • 24, 3, 88
  • 24, 4, 89
  • 24, 5, 93
  • 24, 6, 92
  • 24, 7, 85

2000/277 18:45 Real-Time Gain Changes (Band, Channel, New Value):

  • 24, 8, 84
  • 24, 9, 90
  • 24, 10, 85
  • 25, 2, 116
  • 25, 3, 110
  • 25, 4, 105
  • 25, 5, 109

2000/277 18:48 Real-Time Gain Changes (Band, Channel, New Value):

  • 25, 6, 105
  • 25, 7, 109
  • 25, 8, 99
  • 25, 9, 99
  • 25, 10, 105
  • 27, 1, 238
  • 27, 2, 219

2000/277 19:14 Real-Time Gain Changes (Band, Channel, New Value):

  • 27, 3, 231
  • 27, 4, 238
  • 27, 5, 238
  • 27, 6, 238
  • 27, 7, 238
  • 27, 8, 238
  • 27, 9, 238
  • 27, 10, 238

Wednesday, October 4, 2000

2000/278 07:27:08 ATC Load OA-15: SD/SDSM Open
2000/278 09:06:01 ATC Load OA-16: SD/SDSM Screened
2000/278 13:38 Real-Time Memory Dump (6,16,45312,0,1,1)
2000/278 13:39 Real-Time Memory Dump (6,16,45568,0,1,1) Formatter registers of current count and addresses for each of the formatter errors that have occurred since formatter restart with new software patch on 230/19:57.
2000/278 19:26 Real-Time MOD_MEM_DUMP(36,550,0,0,1,18) Verification of the Formatter Gain Changes (Formatter Memory Table 4) Successful collection of all 18 dumped partitions.

Thursday, October 5, 2000

None

Friday, October 6, 2000

None

This Week's Scheduled MODIS Activities Not Completed:

Tuesday, October 3, 2000

2000/277 19:17 Real-Time MOD_MEM_DUMP(36,550,0,0,1,18) Verification of the Formatter Gain Changes (Formatter Memory Table 4). Problems with Online Software resulted in loss of 2 of the 18 dumped partitions.

Upcoming MODIS Events:

Saturday, October 7, 2000

None

Sunday, October 8, 2000

None

Monday, October 9, 2000

None

Tuesday, October 10, 2000

None

Wednesday, October 11, 2000

None

Thursday, October 12, 2000

None

Friday, October 13, 2000

None

Maneuvers:

The next MODIS Lunar Roll Maneuver is planned for October 17th.

MODIS Anomalies:

Continued monitoring for formatter errors and loss of cooler margin.

Attached to this report is a spreadsheet listing the times, addresses, formatter temperature, geolocation, and space craft day/night position for each of the formatter events that have occurred since DOY 256. [The most recent events are still under analysis and therefore only partial data is present in the spreadsheet.]

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:

The Drag Makeup Maneuver on 2000-278 (10/04/2000) went nominally.

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: 1429 of 3022 Movements Nadir Aperture Door: 532 of 1316 Movements Space View Door: 437 of 1316 Movements

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