NOAA 12 AVHRR Subsystem Summary

Component	Description	Status
BASEPLATE	AVHRR baseplate	Green
CHANNEL 1	Spectral Channel #1, 0.58 - 0.68 micro meters	Green
CHANNEL 2	Spectral Channel #2, 0.725 - 1.0 micro meters	Green
CHANNEL 3	Spectral Channel #3, 3.55 - 3.93 micro meters	Green
CHANNEL 4	Spectral Channel #4, 10.3 - 11.3 micro meters	Green
CHANNEL 5	Spectral Channel #5, 11.5 - 12.5 micro meters	Green
OPTICS	AVHRR Optical mirrors and telescopes	Green
PSU	Power Supply Unit	Green
RADIANT COOLER	AVHRR Radiant Cooler	Green
SCAN MOTOR	AVHRR Scan Motor	Green

Subsystem History:

Date	Time	Component	Description
08/03/2004	13:42:00		Switch AVHRR channel back to 2A (from 1A) continuing UVtrip recovery
07/28/2004	18:00:00		Turnon AVHRR electronics and enable its data channels. Status upgraded to Green.
07/25/2004	23:19:00		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.
10/20/1991		SCAN MOTOR	AVHRR sees temporary periods of high sync jitter and motor current changes due to possible bearing problems. Disabled TCE to increase lubricant.
05/14/1991	15:26:00	PSU	On Orbit
05/14/1991	15:26:00	SCAN MOTOR	On Orbit
05/14/1991	15:26:00	RADIANT COOLER	On Orbit
05/14/1991	15:26:00	OPTICS	On Orbit
05/14/1991	15:26:00	BASEPLATE	On Orbit
05/14/1991	15:26:00	CHANNEL 1	On Orbit
05/14/1991	15:26:00	CHANNEL 2	On Orbit
05/14/1991	15:26:00	CHANNEL 3	On Orbit
05/14/1991	15:26:00	CHANNEL 4	On Orbit
05/14/1991	15:26:00	CHANNEL 5	On Orbit