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am1weekly_2003-130_2003-136

Mission Operations Days: 2003/130 to 2003/136
May 10, 2003 00:00:00 GMT to May 16, 2003 00:00:00 GMT


Terra Spacecraft and MODIS Instrument Status:

AM-1 "Terra" is in Normal Mode
PFM MODIS is in A-Side Nominal Science Mode
(Cross Strapped with FR B)
Component State(s) Comment
Blackbody A On (290K); B Off Nominal Science Mode
Calibration Electronics A On; B Off Nominal Science Mode
Control Processor A On; B Off Nominal Science Mode
Nadir Door Unlatched, Open Nominal Science Mode
Space View Door Unlatched, Open Nominal Science Mode
Solar Diffuser Door Unlatched, Closed Solar Diffuser Screen Anomaly. Under Investigation
FDDI Formatter A On; B Off Nominal Science Mode
FDDI Port A On; B Off Nominal Science Mode
FIFO Memory #1 & #2 On; #3 & #4 Off Nominal Science Mode
Format Processor A Off; B On Nominal Science Mode
Power Supplies #1 On, #2 Off Nominal Science Mode
PV VIS FPA A On; B Off Nominal Science Mode
PV NIR FPA A On; B Off Nominal Science Mode
PV SMIR FPA A On; B Off Nominal Science Mode
PV LWIR FPA A On; B Off Nominal Science Mode
PC LWIR FPA A On; B Off Nominal Science Mode
RC Outgas Heaters All 3 (CS, IS, OS) Off Nominal Science Mode
RC LWIR FPA Heater On (83K) Nominal Science Mode
RC SMIR FPA Heater Off Nominal Science Mode
Scan Assembly A On; B Off Nominal Science Mode
SDSM Off Nominal Science Mode
SRCA Off Nominal Science Mode
PS1 Survival Heater Enabled Nominal Science Mode
PS2 Survival Heater Enabled Nominal Science Mode
Timing Generator A On; B Off Nominal Science Mode
Flight Software Rev BD + 9 sets of patches
  • CP07 to Safe Mode - No FR OFF Command (1 patch)
  • CP07 to Science Mode - Turn on FRB instead of FRA (1 patch)
  • CP07 to Outgas and Science Mode - Turn on FRB instead of FRA (1 patch)
  • FR Error Counting and Statistics (2 patches)
  • FR 1000ms time code patches (3 patches)
  • FR Band 5 Gain Change (20 commands)
  • FR BB Ideal Output Values (1 patch)
  • FR A EEPROM KME Fast 1 word patch (1 patch)
  • FR B EEPROM KME Fast 1 word patch (1 patch)
Nominal Science Mode
Inhibit Ids Set none Nominal Science Mode
TMON 66 Disabled Nominal Science Mode
TMON 67 Disabled Nominal Science Mode
TMON 68 Enabled Nominal Science Mode
TMON 69 Disabled Nominal Science Mode

This Week’s Completed MODIS Activities:

Saturday, May 10, 2003

None

Sunday, May 11, 2003

None

Monday, May 12, 2003

None

Tuesday, May 13, 2003

None

Wednesday, May 14, 2003

2003/134 19:56:12 - 19:56:52 Real-Time MOD_MEM_DUMP(‘motor_constants’,35,0,0,1,2) Memory Dump of Table #16
2003/134 19:57:17 - 19:57:58 Real-Time MOD_MEM_DUMP(‘motor_trigger_data’,60,0,0,1,2) Memory Dump of Table #17
2003/134 19:58:12 - 19:58:36 Real-Time MOD_MEM_DUMP(‘door_data’,12,0,0,1,1) Memory Dump of Table #20

Thursday, May 15, 2003

None

Friday, May 16, 2003

None

This Week’s Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

May calibrations for the PFM MODIS instrument will include biweekly SD/SDSM, monthly SRCA Radiometric, and bimonthly SRCA Full Spatial calibrations. However, PFM SD/SDSM calibrations are currently on hold pending the resolution of the solar diffuser screen anomaly.

Maneuvers:

There will not be a Terra MODIS lunar calibration during the month of May. The required roll angle (-25.2278 degrees) exceeds the maximum allowed angle of -20 degrees.

MODIS Anomalies:

During the May 6, 2003 (doy 2003/126) Terra Solar Diffuser calibration with the Solar Diffuser Door in the full open position, the telemetry mnemonic, MOD_CR_DR_SDS_OPEN, did not change from NOT_OPEN to OPEN as was expected. A xx6A CP Event Message, "MTR SDD Trigger Not Found", was generated. Further analysis by MCST determined that the screen had indeed remained NOT_OPEN during this calibration, however, dump data analysis by the IOT showed that the drive motor moved through the entire range of the screen from closed to open to closed. Initial thoughts are that the clutch that attaches the drive motor to the screen may have malfunctioned. Further investigation is underway and Terra SDSM calibrations are temporarily on hold.

General Instrument Comments:

MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K.

MODIS Telemetry Trends:

Nominal telemetry trending is ongoing.

Non-MODIS Significant Events:

The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links web pages. There are directions at the URL below for how to obtain a username/password.

http://jupiter02.gsfc.nasa.gov/links/links.htm

Limited Life Item Status:

SRCA 10W Lamp #1: 212.9 of 500 hours
SRCA 10W Lamp #2: 159.0 of 500 hours
SRCA 10W Lamp #3: 168.2 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours

SRCA 1W Lamp #1: 561.8 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours

Solar Diffuser Door: 2145 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements