NOAA Office of Satellite and Product Operations

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NOAA 12 AVHRR Subsystem Summary

Component Description Status
CHANNEL 1Spectral Channel #1, 0.58 - 0.68 micro metersGreen
CHANNEL 2Spectral Channel #2, 0.725 - 1.0 micro metersGreen
CHANNEL 3Spectral Channel #3, 3.55 - 3.93 micro metersGreen
CHANNEL 4Spectral Channel #4, 10.3 - 11.3 micro metersGreen
CHANNEL 5Spectral Channel #5, 11.5 - 12.5 micro metersGreen
OPTICSAVHRR Optical mirrors and telescopesGreen
PSUPower Supply UnitGreen

Subsystem History:

Date Time Component Description
08/03/200413:42:00 Switch AVHRR channel back to 2A (from 1A) continuing UVtrip recovery
07/28/200418:00:00 Turnon AVHRR electronics and enable its data channels. Status upgraded to Green.
07/25/200423:19:00 Battery undervoltage safestate tripped causing power load shed that included AVHRR power off. Declared yellow in status until recovery complete.
12/01/1992 AVHRR video data in HRPT is missing pixel (count) values for certain bit counts that affects all five spectral channels. Affects all AVHRR/2 series.
10/20/1991SCAN MOTORAVHRR sees temporary periods of high sync jitter and motor current changes due to possible bearing problems. Disabled TCE to increase lubricant.
05/14/199115:26:00PSUOn Orbit
05/14/199115:26:00SCAN MOTOROn Orbit
05/14/199115:26:00RADIANT COOLEROn Orbit
05/14/199115:26:00OPTICSOn Orbit
05/14/199115:26:00BASEPLATEOn Orbit
05/14/199115:26:00CHANNEL 1On Orbit
05/14/199115:26:00CHANNEL 2On Orbit
05/14/199115:26:00CHANNEL 3On Orbit
05/14/199115:26:00CHANNEL 4On Orbit
05/14/199115:26:00CHANNEL 5On Orbit