NOAA 18 AMSU-A2 Subsystem Summary
Go Back to Previous Page
Component Status:
Component |
Description |
Status |
ANTENNA | Antenna | Green |
CHANNEL 1 | Radiometer channel 1, 23800 MHz | Green |
CHANNEL 2 | Radiometer channel 2, 31400 MHz | Green |
COMPENSATOR | Compensator | Green |
GUN DIODE OSC | Gun Diode Oscillator | Green |
MIXER IF AMP | Mixer Intermediate Frequency Amplifier | Green |
RECEIVER | Receiver | Green |
SCAN MOTOR | Instrument Scan Motor | Green |
SIGNAL PROCESSOR | Signal Processor | Green |
Status Key
Status Color |
|
Meaning |
GREEN |
= |
Operational (or capable of) |
YELLOW |
= |
Operational with limitations (or Standby) |
ORANGE |
= |
Operational with Degraded Performance |
RED |
= |
Not Operational |
BLANK |
= |
No Status Reported |
Subsystem History:
Date |
Time |
Component |
Description |
02/07/2008 | 03:10:00 | | The NOAA-18 AMSU-A2 instrument began showing unusual reading in its Digital-A telemetry starting at 03:10 GMT the morning of 7 February 2008 (2008/038). At that time, there was a downward shift seen in the Internal Warm Target temperature, the temperature sensor reference voltage began fluctuating rapidly with values over a range of approximately 500 raw counts, and many of the Digital-A temperatures also began rapid fluctuations in value. Additionally, there were shifts in the radiometric levels in the IWT and Cold Cal views. As a result of the inconsistent values being reported for the various temperatures and the drifts in radiometric values, data processing has been affected. The NEdT values for the two AMSU-A2 channels have risen to roughly twice their previous levels. |
09/30/2007 | 21:39:00 | | On 07/273, AMSU A2 Cold Cal Position and Cold Cal Select position changed to 0,POS2 respectively (from 1, POS1). The DC Converter temperature began to rise, causing other temperatures to rise. DC Converter Temps leveled off at 306-207.5K as of 07/275. |
07/27/2005 | 20:15:00 | | Select Space View Position 2 and recover from unexpected configuration. |
07/26/2005 | 17:10:00 | | After being commanded to Warm View, AMSU-A2 did not return to expected configuration one rev later. Symptoms show as miscompares on P2COLDC and DAM2CALL mnemonics. |
07/26/2005 | 17:06:00 | | Return AMSU-A2 to full scan, test complete. |
07/26/2005 | 15:41:00 | | Park AMSU-A2 at warm target to support HIRS TOAR invesitgation |
06/08/2005 | 01:35:00 | | AMSU-A2 to space view-2 |
06/05/2005 | 19:05:00 | | AMSU-A2 to space view-1. |
06/03/2005 | 19:20:00 | | AMSU-A2 commanded to space view-3 |
06/01/2005 | 19:40:00 | | AMSU-A2 commanded to space view 4 |
05/30/2005 | 21:48:00 | | AMSU-A2 commanded to space position 2 |
05/24/2005 | 19:25:30 | CHANNEL 2 | on orbit, operational |
05/24/2005 | 19:25:00 | CHANNEL 1 | on orbit, operational |
05/24/2005 | 19:23:00 | SIGNAL PROCESSOR | turned on, operational |
05/24/2005 | 19:22:00 | SCAN MOTOR | turned on, operational |
05/24/2005 | 19:21:00 | RECEIVER | turned on, operational |
05/24/2005 | 19:20:30 | MIXER IF AMP | turned on, operational |
05/24/2005 | 19:20:20 | COMPENSATOR | turned on, on orbit |
05/24/2005 | 19:20:10 | ANTENNA | AMSU-A2 turnon, antenna operational |
05/24/2005 | 19:20:00 | GUN DIODE OSC | turned on, operational. |
05/24/2005 | 19:20:00 | | AMSU-A2 powered on, nominal. |
05/20/2005 | 11:58:00 | | AMSU-A2 survival heater nominally turned on instrument not yet powered up. |
|
|