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MODIS IOT Terra Weekly Report
Mission Operations Days: 2000/267 to 2000/273
September 22, 2000 20:00:00 GMT to September 29, 2000 20:00:00 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
| Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 66, 67, 68 | Nominal |
This Week’s Completed MODIS Activities:
Saturday, September 23, 2000None
Sunday, September 24, 2000None
Monday, September 25, 2000None
Tuesday, September 16, 2000None
Wednesday, September 27, 2000None
Thursday, September 28, 2000None
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
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
None
Sunday, October 1, 2000None
Monday, October 2, 2000None
Tuesday, October 3, 2000None
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
None
Friday, October 6, 2000None
Maneuvers:
The next Drag Makeup Maneuver is planned for October 4th.
The next MODIS Lunar Roll Maneuver is planned for October 17th.
MODIS Anomalies:
Continued monitoring for formatter errors and loss of cooler margin.
Five formatter errors have been caught by the flight software patch recently, their event times are:
2000/256 14:12:42
2000/271 12:33:09
2000/272 07:06:51
2000/273 04:32:03
2000/273 06:00:15
The address of each of these errors have been seen previously. The MODIS IOT is currently trending telemetry, orbital position, and other internal/external spacecraft events in an attempt to find the cause of these occasional formatter errors.
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: 1417 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements
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Last Update: Tuesday, 14-Jan-2003 16:04:44 EST
