NOAA Office of Satellite and Product Operations

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NOAA 17 AVHRR Subsystem Summary

Component Description Status
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
OPTICSAVHRR Optical mirrors and telescopesGreen
PSUPower Supply UnitGreen

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