NOAA Office of Satellite and Product Operations

NOAA 14 SBUV Subsystem Summary

Component Status:

Component
Description
Status
CALIBRATORSolar Backscatter Ultraviolet Spectral Radiometer - CalibratorGreen
CHOPPER MOTORSolar Backscatter Ultraviolet Spectral Radiometer - Chopper MotorGreen
DIFFUSERSolar Backscatter Ultraviolet Spectral Radiometer - DiffuserGreen
ELECTRONICSInstrument electronics suiteGreen
FLEX MEMORYFlex memory portion of the SBUV processorGreen
GRATING DRIVESolar Backscatter Ultraviolet Spectral Radiometer - Grating DriveYellow
OPTICSOptical sub component suiteGreen

Subsystem History:

Date Time Component Description
09/28/200617:04:00 Major spacecraft attitude perturbation resulted in autonomous battery undervoltage safing macro implementation turning off SBUV.
09/02/200514:40:00GRATING DRIVECommanding back to discrete mode was sucessful. Grating position changing, scanning nominal.
09/02/200514:35:00GRATING DRIVEEnable SBUV discrete mode to correct for anomaolous swap to "null mode".
09/01/200518:16:00GRATING DRIVESBUV grating motor ceased scanning and autonomously switched out of DISCRETE mode resulting in all operational modes reading "NO".
07/25/200512:50:00 Grating position problems detected during ozone products production resulted in no data. Further degradation of Grating drive suspected. Health telemetry appears "nominal".
11/18/200418:00:00DIFFUSERRe-initiate standard SBUV Diffuser reflectivity measurement operations.
07/22/200423:59:00GRATING DRIVERemove bi-weekly SBUV giant step from schedule permanently because of increased potential for grating drive anomaly.
07/09/200413:55:00GRATING DRIVESBUV grating motor power toggle recovery operation successful. Grating motor again operatiional.
07/09/200413:54:00GRATING DRIVEPower SBUV grating drive back on.
07/09/200413:48:00 SBUV strobe command.
07/08/200413:56:00FLEX MEMORYSELECT FLEX MEM 0
07/08/200413:55:00FLEX MEMORYSelect flex mem 3 and strobe.
07/08/200413:53:00GRATING DRIVERestart safety macro which tripped after grating drive temp exceeded 25.5
07/08/200402:51:00GRATING DRIVESBUV grating motor overran its nominal position at -670 and became stuck in Flex Memory 3 at position -921. This caused temp to rise through trigger point of safety macro (25.0 degs) which powered grating motor off at 07:52Z.
12/02/200318:32:00CALIBRATOROpen SBUV lamp
12/02/200318:31:00CALIBRATORDisable SBUV lamp
12/02/200318:30:00DIFFUSERSBUV Diffuser to STOW position
12/02/200300:01:00GRATING DRIVERemove weekly mini-giant step sequence in FLex Memory 3 from the stored command table
11/28/200319:30:00GRATING DRIVESBUV grating motor power toggle recovery operation successful. Grating motor again operating in Flex Mem 0.
11/28/200319:20:00GRATING DRIVETurn SBUV grating motor power back on.
11/28/200317:52:00GRATING DRIVETurnoff SBUV grating motor power.
11/28/200317:41:00GRATING DRIVETurn SBUV grating motor power back on.
11/28/200317:40:00FLEX MEMORYCommand SBUV to Flex Memory 0
11/28/200316:05:00GRATING DRIVETurnoff SBUV grating motor power.
11/28/200315:56:00GRATING DRIVETurn SBUV grating motor power back on.
11/28/200312:55:00GRATING DRIVETurnoff SBUV grating motor power.
11/28/200312:44:00GRATING DRIVETurn SBUV grating motor power back on.
11/28/200312:43:00FLEX MEMORYCommand SBUV to Flex Memory 3
11/27/200314:45:00GRATING DRIVETurnoff SBUV grating motor power
11/27/200314:35:00GRATING DRIVETurn SBUV grating motor power on.
11/27/200313:05:00GRATING DRIVETurnoff SBUV grating motor power.
11/27/200312:55:00GRATING DRIVETurn SBUV grating motor power back on.
11/27/200302:05:36GRATING DRIVESBUV grating motor became stuck in Flex Memory 3 at position -936 causing temp to rise through trigger point of safety macro (25.0 degs) which powered grating motor off at 03:52Z.
11/25/200320:01:00FLEX MEMORYLoad position -730 to Flex 3, words 1, 3, 5, 7, 9, 11
11/20/200319:35:00GRATING DRIVECommanding to flex memory 3 successful in freeing up grating motor. Unit is again operational.
11/20/200319:21:00GRATING DRIVECommanded SBUV grating motor power ON.
11/20/200319:19:00FLEX MEMORYCommanded SBUV to FLEX Memory 3
11/20/200316:09:00GRATING DRIVESBUV grating motor power commanded OFF
11/20/200316:00:00GRATING DRIVESBUV grating motor power commanded back ON.
11/20/200303:50:00GRATING DRIVESBUV grating motor temp rose through safing macro trip point. Macro powered off grating motor.
11/20/200301:53:00GRATING DRIVESBUV grating motor ceased, temperature began to rise.
06/05/200300:00:01GRATING DRIVEdiscrete solar measurement in Flex 0
07/21/199800:00:00GRATING DRIVESBUV mini giant step every after dark side of orbit
06/01/199800:00:00GRATING DRIVESBUV grating drive position 4 of Flex Mem 0 has significant increase in position errors
12/06/199619:27:00GRATING DRIVEGrating drive testing with various configuration modes occurred Dec. 2-6. By Dec. 6, the grating drive motor reached full commanded range of -750 to +450.
11/29/199622:48:00GRATING DRIVEGrating drive motor powered off.
11/29/199622:01:00GRATING DRIVESBUV Grating Drive started to stick during execution of a new wavelength calibration procedure. Positions were range of -1099 to -1425
01/02/199600:00:00FLEX MEMORYSBUV zigzag wavelengths used for ozone detection.
10/15/199500:00:00GRATING DRIVESBUV Sweep mode removed from schedule.
12/30/199410:36:00GRATING DRIVEOn Orbit
12/30/199410:36:00OPTICSOn Orbit
12/30/199410:36:00ELECTRONICSOn Orbit
12/30/199410:36:00FLEX MEMORYOn Orbit
12/30/199410:36:00CALIBRATOROn Orbit
12/30/199410:36:00DIFFUSEROn Orbit
12/30/199410:36:00CHOPPER MOTOROn Orbit