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NOAA Office of Satellite and Product Operations

NOAA 17 AVHRR Subsystem Summary

Component Description Status
BASEPLATEAVHRR baseplateGreen
CHANNEL 1Spectral channel #1, 0.58-0.68 micro meters. Green
CHANNEL 2Spectral channel #2, 0.725-1.0 micro meters. Green
CHANNEL 3ASpectral channel #3A, 1.58-1.64 micro meters. Green
CHANNEL 3BSpectral channel #3B, 3.55-3.93 micro meters. Green
CHANNEL 4Spectral channel #4, 10.3-11.3 micro meters. Green
CHANNEL 5Spectral channel #5, 11.5-12.5 micro meters. Green
ELECTRONICSAVHRR ElectronicsGreen
OPTICSAVHRR Optical mirrors and telescopesGreen
PSUPower Supply UnitGreen
RADIANT COOLERAVHRR Radiant CoolerGreen
SCAN MOTORAVHRR Scan MotorRed


Subsystem History:

Date Time Component Description
04/09/201316:03:51 Turn on AVHRR outgas heater
02/22/201315:54:28 This will power on the IR channels 3B, 4, and 5 and inhibits channel 3A/3B switching.
02/21/201316:16:09 This will disable the heater and enable the patch control.
01/30/201316:41:28 Select Channel 3A -- visible channel.Turn off patch control.Turn heater on
10/15/201016:44:00SCAN MOTORThe Scan Motor has stalled.
09/28/201020:11:37SCAN MOTORMotor current spike accompanied by large increase in motor sync delta values. Motor is rotating, but not at a stable/usable frequency.
03/31/201012:00:00SCAN MOTORAVHRR Product Data is now considered unusable due to increased degradation of the Scan Motor's performance.
03/23/201014:06:46 Disabled the AVHRR Thermal Control Equipment (to warm the Scan Motor)
01/10/2010SCAN MOTORScan Motor Instabilities are causing MIRP Rephase events that result in data drop-outs for all subsystems.
07/24/200215:30:00ELECTRONICSEnabled AVHRR Channel 3A/B Autoswitching
07/10/200215:42:00ELECTRONICSAVHRR IR channels turned on
07/09/200214:23:00ELECTRONICSturned Off" AVHRR survival heater OR turned AMSU-B cooler heater"
06/24/200219:06:00ELECTRONICSAVHRR Electronics ON, enable monitoring
06/24/200218:56:00PSUOn Orbit
06/24/200218:56:00SCAN MOTOROn Orbit
06/24/200218:56:00ELECTRONICSOn Orbit
06/24/200218:56:00RADIANT COOLEROn Orbit
06/24/200218:56:00OPTICSOn Orbit
06/24/200218:56:00BASEPLATEOn Orbit
06/24/200218:56:00CHANNEL 1On Orbit
06/24/200218:56:00CHANNEL 2On Orbit
06/24/200218:56:00CHANNEL 3AOn Orbit
06/24/200218:56:00CHANNEL 3BOn Orbit
06/24/200218:56:00CHANNEL 4On Orbit
06/24/200218:56:00CHANNEL 5On Orbit
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Info & History

Status Key
Status Color Meaning
GREEN Operational
(or capable of)
YELLOW Operational with limitations
(or Standby)
ORANGE Operational with Degraded Performance
RED Not Operational
BLUE Functional,
Turned Off
BLANK No Status Reported