Mission Operations Days: 2000/232 to 2000/238
August 19, 2000 00:00:00 GMT to August 25, 2000 00:00:00 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 + 1 set of patches
|
Nominal |
| Inhibit Ids Set | None | Nominal |
| TMONs Enabled | 66, 67, 68 | Nominal |
This Week’s Completed MODIS Activities:
Friday, August 18, 2000
2000/231 22:38 Real-Time -- Memory Load ('AM1_MPR_MODIS_LIMIT_255',1,'N','DISABLE',1,1)
2000/231 22:40 Real-Time -- Memory Dump (6,16,45312,0,1,1)
2000/231 22:41 Real-Time -- Memory Dump (6,16,45568,0,1,1)
Saturday, August 19, 2000
2000/232 01:04 Real-Time -- Memory Dump (6,256,45312,0,1,8)
2000/232 01:06 Real-Time -- Memory Dump (6,256,45568,0,1,8)
2000/232 20:40 Real-Time -- Memory Load ('AM1_MPR_MODIS_LIMIT_15',1,'N','DISABLE',1,1)
2000/232 20:41 Real-Time -- Memory Dump (6,16,45312,0,1,1)
2000/232 20:42 Real-Time -- Memory Dump (6,16,45568,0,1,1)
2000/232 20:43 Real-Time -- Turn on Blackbody A-side
2000/232 20:44 Real-Time -- Set Blackbody temperature to 290K
2000/232 20:49 Real-Time -- Set SMIR Itwk/Vdet to 110/226
2000/232 20:53 Real-Time -- Set Blackbody duty cycle to THIRD
2000/232 20:55 Enabled Blackbody temperature alarms
Sunday, August 20, 2000
None
Monday, August 21, 2000
2000/234 22:16 Real-Time -- Enabled TMON 68, new FIFO TMON
Tuesday, August 22, 2000
2000/235 16:59:38 Real-Time -- Memory Dump (6,16,45312,0,1,1)
2000/235 17:00:30 Real-Time -- Memory Dump (6,16,45568,0,1,1)
2000/235 17:01:27 Real-Time -- Memory Dump (6,16,45312,0,1,1)
2000/235 17:02:23 Real-Time -- Memory Dump (6,16,45568,0,1,1)
Wednesday, August 23, 2000
2000/236 21:11 Real-Time -- Clear Inhibit ID #31 (Calibration Electronics)
2000/236 21:12 Real-Time -- Clear Inhibit ID #32 (Blackbody)
Thursday, August 24, 2000
None
Friday, August 25, 2000
2000/238 13:25:30 - 13:39:30 Real-Time SMIR Vdet sweep, Itwk = 79, Vdet = 50-230 by 15dn
2000/238 13:40:40 Real-Time Set SMIR Itwk/Vdet to 110/226
2000/238 14:12:10 - 14:20:22 Real-Time SMIR Vdet sweep, Itwk = 90, Vdet = 50-230 by 15dn
2000/238 14:21:50 Real-Time Set SMIR Itwk/Vdet to 110/226
2000/238 15:04:53 - 15:13:04 Real-Time SMIR Vdet sweep, Itwk = 105, Vdet = 50-230 by 15dn
2000/238 15:14:10 - 15:22:21 Real-Time SMIR Vdet sweep, Itwk = 120, Vdet = 50-230 by 15dn
2000/238 15:23:32 Real-Time Set SMIR Itwk/Vdet to 110/226
This Week's Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
None
Maneuvers:
The next roll maneuver to view the moon through the space view port is scheduled for September 18th.
MODIS Anomalies:
The formatter anomaly investigation has continued. Over the weekend, the temperature of the formatter increased (the FIFOs were powered the entire time). At the same time, the number of error events decreased. The errors, which originally occurred about once every eight seconds, decreased to a rate of about six per hour. At approximately 8:00pm EDT August 19th, the formatter errors ceased occurring.
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open.
MODIS Telemetry Trends:
The formatter has warmed to near its pre-anomaly temperature. It currently oscillates between -1 and 0 Centigrade.
The LWIR focal plane heater voltage fluctuates between 5.5 and 6.5 Volts, but the daily average voltage appears to be stable.
Non-MODIS Significant Events:
None
Limited Life Item Status:
SRCA 10W Lamp #1: 173.3 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: 555.8 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1393 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements