Mission Operations Days: 2004/290 to 2004/296
October 16, 2004 00:00:00 GMT to October 22, 2004 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, Screened | Permanent Configuration |
| 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 + 11 sets of patches
|
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, October 16, 2004
None
Sunday, October 17, 2004
None
Monday, October 18, 2004
2004/292 16:12:14-16:12:20 Real Time MOD_ALARMS_URT_RST('ENABLE') Sets the user limits on the UART RESET (value now at 126)
Tuesday, October 19, 2004
None
Wednesday, October 20, 2004
None
Thursday, October 21, 2004
None
Friday, October 22, 2004
None
This Week’s Scheduled MODIS Activities Not Completed:
None
Upcoming MODIS Events:
Calibrations for October will include biweekly SDSM, monthly SRCA 10W Radiometric, quarterly SRCA Full Spectral, and quarterly Blackbody.
A request by MCST has been made to perform SRCA 10W and 1W continuous mode Radiometric observations. These activities will be coordinated for the second half of October. These tests will be similar to the ones perform in October 2003.
Saturday, October 23, 2004
2004/297 21:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A Side
Sunday, October 24, 2004
2004/298 15:00:00 ATC MOD_OA26_BB_280K_A.1 Set blackbody temperature to 280K on the A Side
2004/298 19:00:00 ATC MOD_OA26_BB_285K_A.1 Set blackbody temperature to 285K on the A Side
2004/298 22:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A Side
Monday, October 25, 2004
2004/299 02:00:00 ATC MOD_OA26_BB_315K_A.1 Set blackbody temperature to 315K on the A Side
2004/299 02:00:30 ATC MOD_OA26_BB_DCYCLE_FULL.1 Set blackbody heater duty cycle to FULL
2004/299 05:00:00 ATC MOD_OA26_BB_270K_A.1 Set blackbody temperature to 270K on the A Side
2004/299 05:00:30 ATC MOD_OA26_BB_DCYCLE_THIRD.1 Set blackbody heater duty cycle to THIRD
Tuesday, October 26, 2004
2004/300 02:00:00 ATC MOD_OA26_BB_290K_A.1 Set blackbody temperature to 290K on the A Side
For Terra inclination adjust maneuver #10:
2004/300 15:11:29-15:13:10 ATC MOD_CLOSE_NAD_SVD.1
(100 seconds prior to S/C day, orbit 25838)
2004/300 20:09:32-20:18:20 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement.
2004/300 20:50:00-20:50:31 ATC MOD_SRCA_11_3_8_2_SETUP.1 SRCA setup activity using lamp #4 in lieu of lamp #2
2004/300 20:58:49-21:19:44 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1
Data Collect from 21:14:43-21:19:44
Wednesday, October 27, 2004
2004/301 03:20:00-03:20:31 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal A Side SRCA lamp configuration
2004/301 03:31:40-04:23:21 ATC MOD_OA22_SRCA_FULL_SPECT_1A.6 OA-22: SRCA Full Spectral Calibration Part 1 - A Side
30W lamp data collection is from 03:47:34-04:23:20
2004/301 05:27:25-06:10:15 ATC MOD_OA22_SRCA_FULL_SPECT_2A.5 OA-22: SRCA Full Spectral Calibration Part 2 - A Side
30W lamp data collection is from 05:27:25-06:01:55
2004/301 06:40:00-06:40:31 ATC MOD_SRCA_NOMINAL_SETUP.4 Sets up nominal A Side SRCA lamp configuration
2004/301 06:49:27-07:40:45 ATC MOD_OA22_SRCA_FULL_SPECT_3A.6 OA-22: SRCA Full Spectral Calibration Part 3 - A Side
10W lamp data collection is from 07:05:54-07:40:27
2004/301 08:41:28-09:26:45 ATC MOD_OA22_SRCA_FULL_SPECT_4A.4 OA-22: SRCA Full Spectral Calibration Part 4 - A Side
10W lamp data collection is from 08:41:28-09:19:28
Thursday, October 28, 2004
For Terra inclination adjust maneuver #11:
2004/302 14:59:17-15:00:58 ATC MOD_CLOSE_NAD_SVD.1
(100 seconds prior to S/C day, orbit 25867)
Maneuvers:
The November Lunar Calibration Roll will be on day 2004/307 (November 2, 2004). Data collect will be from 00:22:22- 00:28:52 GMT with a roll angle of -14.1615 degrees.
The Terra FOT is planning for 3 Inclination Adjust Maneuvers (IAMs). The planned dates are October 26, October 28, and November 4 (2004/300, 2004/302, and 2004/309, respectively). The maneuvers will occur at approximately 15:00 GMT on each of those days.
MODIS Anomalies:
At 00:07:21 on October 18, 2004 (doy 2004/292), the reset count telemetry mnemonic, MOD_SS_CP_UART_RESET, for the Universal Asynchronous Receiver-Transmitter (UART) on the Terra MODIS instrument increased by three counts from 122 to 125. The UART controls serial communications between the Control Processor and the Format Processor. Preliminary analysis of the related CP and FR messages indicates that there were interruptions in the link between the CP and the FP. This is very similar to the UART resets that occurred in May of 2003 (2003/138).
MODIS NAD (Nadir Aperture Door) Anomaly:
Telemetry still indicates that the “NAD Open” (MOD_CR_DR_NAD_OPEN) trigger is set to the “NOT_OPEN” position; however, science data has shown that the NAD is open. The NAD OPEN trigger may yet “pop” to OPEN due to thermal cycling on the trigger, as was seen on 2002/079.
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 and the Solar Diffuser Door at the Screened position.
MODIS Telemetry Trends:
Nominal telemetry trending is ongoing.
Non-MODIS Significant Events:
Terra Solid State Recorder Anomaly
Overview:
The SSR Anomaly is still under investigation. MODIS currently is operating with 34 Supersets allotted for its buffer. There are plans in the works for possibly power cycling the SSR to get back PWA’s that are in the Bad List, but no date has yet been set. There are no current plans for a change in science data capture rates. For details, see previous report am1weekly_2003-305_2003-311.doc. The Terra FOT is currently evaluating plans to perform a power recycling of the SSR in an attempt to regain functionality of the “bad” PWAs. This activity will be performed at a time when it is least detrimental to critical science data.
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: 234.9 of 500 hours
SRCA 10W Lamp #2: 168.7 of 500 hours
SRCA 10W Lamp #3: 180.9 of 500 hours
SRCA 10W Lamp #4: 65.5 of 500 hours
SRCA 1W Lamp #1: 566.9 of 4000 hours
SRCA 1W Lamp #2: 276.9 of 4000 hours
Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 538 of 1316 Movements
Space View Door: 441 of 1316 Movements