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
|
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