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NOAA 15 AMSU-B Subsystem Summary

Component Description Status
CHANNEL 16Radiometric Channel 16, 89.0 GHzGreen
CHANNEL 17Radiometric Channel 17, 150.0 GHzGreen
CHANNEL 18Radiometric Channel 18, 183.31 GHzRed
CHANNEL 19Radiometric Channel 19, 183.31 GHzRed
CHANNEL 20Radiometric Channel 20, 183.31 GHzRed
ICEInductosyn Control ElectronicsGreen
MDEMotor Drive ElectronicsGreen
OSCILLATORoscillatorRed
PEUProcessor Electronics UnitGreen
PSUPower Supply UnitGreen
SCAN MOTORInstrument Scan MotorRed


Subsystem History:

Date Time Component Description
08/23/201114:00:00SCAN MOTORMacro 22 (N15_AMSUBTOG) will be activated every Tuesday, at 14:00 UTC, from this point forward, to power cycle the AMSU-B Scan Motor in an attempt to recover motor rotation.
07/19/201116:42:27 AMSU-B Power Cycled Manually via SCP Macro 22 - Motor Recovery Attempt
07/12/201114:35:24 AMSU-B Power Cycled Manually via SCP Macro 22 - Motor Recovery Attempt
05/12/201117:22:16 AMSU-B Turned On
05/11/201116:11:39 AMSU-B Turned Off
05/11/201116:06:33 AMSU-B Turned On
05/10/201121:20:52 AMSU-B Survival Heater On
05/10/201121:20:22 AMSU-B Turned Off
05/10/201121:14:10 AMSU-B Turned On
05/10/201116:39:03 AMSU-B Survival Heater On
05/10/201116:38:39 AMSU-B Turn Off
05/10/201116:34:11 AMSU-B Turn On
05/10/201113:14:36 AMSU-B Survival Heater On
05/10/201113:12:54 AMSU-B Turned Off
03/29/201119:50:00SCAN MOTORFinal attempt to command AMSU-B into Scan Normal Mode; instrument would not accept commands.
03/29/201119:49:00SCAN MOTORAttempted to park the AMSU-B at the Warm Target as a test; instrument did not accept commands.
03/29/201119:48:00SCAN MOTORAttempted to park the AMSU-B at the Space View Position as a test; instrument rejected commands.
03/29/201119:44:00SCAN MOTORAttempted to command the AMSU-B into Scan Normal Mode; instrument rejected commands.
03/29/201116:45:00SCAN MOTORExecuted AMSU-B Normal Turn On Sequence. Space View and Target View select commands were rejected by instrument. Channels were turned back on.
03/29/201116:40:00SCAN MOTORExecuted AMSU-B Turn Off Sequence.
03/29/201115:00:00SCAN MOTORAs part of the nominal recovery process, an attempt was made to park the AMSU-B at the Warm Target position. Instrument failed to accept this command.
03/28/201122:45:18SCAN MOTOROn March 28, 2011, at 22:45:18z, the Scan Motor stalled; Motor Current droped from ~180 to ~14 mA.
09/20/201017:52:46OSCILLATORChannel 18-20 Local Oscillator Failed.
09/20/201017:52:46CHANNEL 18Channel 18 Failed
09/20/201017:52:46CHANNEL 19Channel 19 Failed
09/20/201017:52:46CHANNEL 20Channel 20 Failed
09/16/201019:28:00CHANNEL 16Channel 16 Functional after Channel 18-20 Oscillator turned off.
09/16/201019:28:00CHANNEL 18Channel 18Turned Off
09/16/201019:28:00CHANNEL 19Channel 19 Turned Off
09/16/201019:28:00CHANNEL 20Channel 20 Turned Off
09/14/201022:30:06CHANNEL 16Channel 16 Signal Degraded due to inteference from Channel 18-20 Oscillator .
09/14/201022:30:06CHANNEL 18Channel 18 Signal degraded due to failed Channel 18-20 Oscillator
09/14/201022:30:06CHANNEL 19Channel 19 Signal degraded
09/14/201022:30:06CHANNEL 20Channel 20 Signal degraded
08/10/200312:20:00SCAN MOTORAMSU-B scan motor current and component termperature surge duration of 45 minutes
05/20/200309:23:00SCAN MOTORAMSU-B scan motor current and component termperature surge duration of 1.5 hrs.
04/13/200304:00:00SCAN MOTORAMSU-B scan motor current and component termperature surge duration of 24 hrs.
11/03/1998CHANNEL 17Gradient bias no longer present due to STX1 deactivation
11/03/1998CHANNEL 19Gradient bias no longer present due to STX1 deactivation
11/03/1998CHANNEL 20Gradient bias no longer present due to STX1 deactivation
05/20/1998CHANNEL 17Gradient bias observed due to interference from STX1
05/20/1998CHANNEL 19Gradient bias observed due to interference from STX1
05/20/1998CHANNEL 20Gradient bias observed due to interference from STX1
05/13/199816:24:00SCAN MOTOROn Orbit
05/13/199816:24:00OSCILLATOROn Orbit
05/13/199816:24:00ICEOn Orbit
05/13/199816:24:00MDEOn Orbit
05/13/199816:24:00PEUOn Orbit
05/13/199816:24:00PSUOn Orbit
05/13/199816:24:00CHANNEL 16On Orbit
05/13/199816:24:00CHANNEL 17On Orbit
05/13/199816:24:00CHANNEL 18On Orbit
05/13/199816:24:00CHANNEL 19On Orbit
05/13/199816:24:00CHANNEL 20On Orbit