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NOAA 18 HIRS Subsystem Summary

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Component Status:

Component
Description
Status
CHANNEL 1Spectral Channel #1, 14.95 micro metersYellow
CHANNEL 10Spectral Channel #10, 12.47 micro metersGreen
CHANNEL 11Spectral Channel #11, 7.33 micro metersGreen
CHANNEL 12Spectral Channel #12, 6.52 micro metersGreen
CHANNEL 13Spectral Channel #13, 4.57 micro metersGreen
CHANNEL 14Spectral Channel #14, 4.52 micro metersGreen
CHANNEL 15Spectral Channel #15, 4.47 micro metersGreen
CHANNEL 16Spectral Channel #16, 4.45 micro metersGreen
CHANNEL 17Spectral Channel #17, 4.13 micro metersGreen
CHANNEL 18Spectral Channel #18, 4.00 micro metersGreen
CHANNEL 19Spectral Channel #19, 3.76 micro metersGreen
CHANNEL 2Spectral Channel #2, 14.71 micro metersGreen
CHANNEL 20Spectral Channel #20, 0.69 micro metersGreen
CHANNEL 3Spectral Channel #3, 14.49 micro metersGreen
CHANNEL 4Spectral Channel #4, 14.22 micro metersGreen
CHANNEL 5Spectral Channel #5, 13.97 micro metersGreen
CHANNEL 6Spectral Channel #6, 13.64 micro metersGreen
CHANNEL 7Spectral Channel #7, 13.35 micro metersGreen
CHANNEL 8Spectral Channel #8, 11.11 micro metersGreen
CHANNEL 9Spectral Channel #9, 9.71 micro metersGreen
ELECTRONICSInstrument ElectronicsGreen
FILTER WHEELInstrument Filter Wheel MotorSGreen
SCAN MOTORInstrument Scan MotorGreen
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
05/10/200714:58:00SCAN MOTORHIRS to full scan mode after test completion
05/10/200713:10:00SCAN MOTORPark HIRS at space view for test
09/28/200613:05:00 Command "Position Disable" return to nomral scanning. End lens test #2
09/27/200613:15:00 Lens stabikization test #2: Commanded Position Disable then Nadir Position Disable then Nadir Position then Position Disable then IWT Position and then FW housing heater off.
09/25/200613:35:00 Commanded Scan mirror to IWT position and turn ON Filter wheel housing heater.
09/14/200618:35:00 Command Position Disable, return HIRS mirror to normal scan mode. End HIRS lens stabilization test.
09/13/200620:35:00 Command Filter Wheel Housing Heater off
09/11/200617:25:00 Command HIRS Filter Housing Heater on (for lens stabilization test #1).
09/11/200616:00:00 Command the HIRS mirror to IWT position (for lens stabilization test #1).
04/11/200606:10:00CHANNEL 1HIRS long wave channels again degraded with negative impacts on imagery.
04/07/200622:30:00CHANNEL 1HIRS long wave channels improved back to nominal values, imagery improved.
03/15/200623:11:00 Return to normal Dwell Channel
03/15/200623:10:00 Return HIRS to Full Scan.
03/15/200617:56:00 Put HIRS in Space View for 3 orbits.
03/15/200617:55:00 TIP Dwell on NHIRSMTI (HIRS Scan Mtr Current), CH245
03/14/200612:00:00CHANNEL 1HIRS payload again downgraded to YELLOW status because of long wave channel noise which has resulted in Products being unable to utilize this payload.
02/05/200604:48:00CHANNEL 1HIRS long wave channel noise continues to occur intermittently sometimes lasting for several days even in the absence of solar array moves and other potential perturbations to the loose LWIR lens cover. Channel-1 most affected.
01/04/200612:00:00CHANNEL 1Because of improvements in the long wave channel noise situation and an understanding of its causes (loose lens cover), N18 HIRS has been upgraded to Green status.
12/15/200500:00:00CHANNEL 1TOAR board investigation concluded on HIRS long wave channel noise. Problem attributed to loose LWIR lens cover that is highly sensitive to minor spacecraft attitude purturbations such as solar array offset changes. Channel-1 reported as nominal although channels 2, 4, 5, 6, 7, 9 and 10 are reported as somewhat out of spec.
10/13/200515:41:00 Return to normal Dwell Channel (bus voltage)
10/13/200515:40:00 Return HIRS to Full Scan
10/13/200514:01:00 Put HIRS in Space View
10/13/200514:00:00 TIP Dwell on NHIRFMTI (HIRS FW Mtr Current), CH261
08/15/200512:00:00CHANNEL 1HIRS payload and channel-1 component downgraded to YELLOW status because of degraded imagery (ref: TOAR 448) first detected on 6 June 05.
07/12/200517:44:00FILTER WHEELHIRS FW to low power mode
07/12/200516:21:00SCAN MOTORHIRS to full scan mode
07/12/200514:40:00FILTER WHEELHIRS FW motor to High Power
07/12/200512:57:00 Park HIRS in Space View
07/05/200518:55:00SCAN MOTORHIRS to Full Scan Mode
07/05/200517:22:00SCAN MOTORPark HIRS in Space View
06/27/200518:40:00SCAN MOTORHIRS to full scan mode
06/27/200517:00:00SCAN MOTORPark HIRS at space view
06/21/200515:00:00SCAN MOTORPlace HIRS back in full scan mode
06/21/200513:10:00SCAN MOTORPark HIRS at cold (space) view target
06/20/200523:25:00SCAN MOTORPlace HIRS in full scan mode
06/20/200521:40:00SCAN MOTORPark HIRS at warm target
06/10/200512:00:00 HIRS imagery less than nominal on several channels, under investigation.
06/09/200515:15:00SCAN MOTORHIRS to full scan mode
06/09/200513:35:00SCAN MOTORHIRS scanner park at Space View
06/08/200522:01:00SCAN MOTORHIRS to full scan mode.
06/08/200520:21:00SCAN MOTORHIRS scanner park at warm target
06/05/200515:55:00CHANNEL 20On orbit, operational. End HIRS OV period. Subsytem configured for nominal operations.
06/05/200515:54:00CHANNEL 19On orbit, operational
06/05/200515:53:55CHANNEL 18On orbit, operational
06/05/200515:53:45CHANNEL 17On orbit, operational
06/05/200515:53:35CHANNEL 16On orbit, operational
06/05/200515:53:25CHANNEL 15On orbit, operational
06/05/200515:53:15CHANNEL 14On orbit, operational
06/05/200515:53:15CHANNEL 13On orbit, operational
06/05/200515:53:10CHANNEL 12On orbit, operational
06/05/200515:53:05CHANNEL 11On orbit, operational
06/05/200515:53:00CHANNEL 10On orbit, operational
06/05/200515:52:55CHANNEL 9On orbit, operational
06/05/200515:52:50CHANNEL 8On orbit, operational
06/05/200515:52:50CHANNEL 7On orbit, operational
06/05/200515:52:45CHANNEL 6On orbit, operational
06/05/200515:52:35CHANNEL 5On orbit, operational
06/05/200515:52:30CHANNEL 4On orbit, operational
06/05/200515:52:25CHANNEL 3On orbit, operational
06/05/200515:52:20CHANNEL 2On orbit, operational
06/05/200515:52:10CHANNEL 1On orbit, operational
06/05/200515:52:00ELECTRONICSHIRS electronics turnon, filter motor to normal, calibration on.
06/04/200519:12:00 HIRS outgasssing complete. Enabled patch control heater and opened cooler cover door.
05/20/200510:22:00FILTER WHEELSpacecraft launched with HIRS filter motor powered up. HIRS detectors not yet activated, no imagery available until outgassing completes (NET 5 June)
05/20/200510:22:00SCAN MOTORSpacecraft launched with HIRS scan motor powered up. HIRS detectors not yet activated, no imagery available until outgassing completes (NET 5 June)

 

 

 

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