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am1weekly_2000-232_2000-238

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
ComponentState(s)Comment
BlackbodyA On (290 K); B OffNominal
Calibration ElectronicsA On; B OffNominal
Control ProcessorA On; B OffNominal
Nadir DoorUnlatched, OpenNominal
Space View DoorUnlatched, OpenNominal
Solar Diffuser DoorUnlatched, ClosedNominal
FDDI FormatterA On; B OffNominal
FDDI PortA On; B OffNominal
FIFO Memory#1 & #2 On; #3 & #4 OffNominal
Format ProcessorA On; B OffNominal
Power Supplies#1 On, #2 OffNominal
PV VIS FPAA On; B OffNominal
PV NIR FPAA On; B OffNominal
PV SMIR FPAA On; B OffNominal
PV LWIR FPAA On; B OffNominal
PC LWIR FPAA On; B OffNominal
RC Outgas HeatersAll Off (CS, IS, OS)Nominal
RC LWIR FPA HeaterOn (83 K)Nominal
RC SMIR FPA HeaterOffNominal
Scan AssemblyA On; B OffNominal
SDSMA Off; B OffNominal
SRCAA Off; B OffNominal
PS1 Survival HeaterEnabledNominal
PS2 Survival HeaterEnabledNominal
Timing GeneratorA On; B OffNominal
Flight SoftwareRev BD + 1 set of patches
  • FR Error Counting and Statistics (2 patches)
Nominal
Inhibit Ids SetNoneNominal
TMONs Enabled66, 67, 68Nominal

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