2004 Yearly SABER Operations Overview

Quick Contents

2004 Data Collection 2004 Operational Changes 2004 Trends 2004 Coverage 2004 Commanding 2004 Limit Violations

Appendices

• 2004 Data Collection

SABER became operational on January 8, 2002, and remained in Data Collection (DC) mode during 2004 except for the periods noted below.


• January 24 - Produced one up/down scan pair at calibration scan speed to characterize noise difference between up and down scans.
• March 1-2 - 6 Lunar Observations
• 1 Mar 19:39 - First Moonlook
• 2 Mar 03:54 - Last Moonlook
• March 16-18 - Cooler Power Cycle
• 16 Mar 16:39 - Command sent to turn off the adaptive scan and cryo-cooler.
• 17 Mar 15:18 - Command sent to turn the cryco-cooler back on and set the temperature to 74K.
• 18 Mar 15:35 - Command sent to re-enable adaptive scan and restart nominal DC
• March 19 - Produced one half orbit of Calibration Slew Earth to Space scans to characterize the "detector memory" effect.
• September 15-21 - TIMED G&C (Guidance & Control) Testing with Cooler Power Cycle. The new G&C software will support no-gyro (star tracker only) operation.
• 15 Sep 17:18 - Command sent to turn off the adaptive scan and cryo-cooler.
• 16 Sep 17:30 - TIMED demoted to SAFE. SABER standby (Sun Pointing SAFE Hold)
• 20 Sep 17:06 - Command sent to turn the cryco-cooler back on and set the temperature to 74K.
• 21 Sep 17:21 - TIMED promoted to NADIR. Command sent to re-enable adaptive scan and restart nominal DC
• September 29 - October 1 - TIMED G&C Testing
• 29 Sep 14:40 - TIMED demoted to SAFE. SABER standby (Sun Pointing SAFE Hold)
• 01 Oct 15:16 - TIMED promoted to NADIR. SABER returns to DC.



Click here for a list of each command sent in 2004 along with a short description of that command's purpose.

• 2004 Operational Changes

Operational changes made to SABER in 2004 are noted below:

• No operational changes were made to SABER during 2004



• 2004 Trends

Trended parameters are divided into three sections:

• Housekeeping - plotted parameters directly related to health and monitoring
• Responsivity - responsivity levels plotted for channels 1-10
• Scan Mirror - plot of scan mirror behavior for 2004



• Coverage

The plot below shows the dates of TIMED Yaws, and the latitudes between which SABER observed during those Yaws






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The small picture below shows the orientation of SABER on TIMED, and the latitudes observed in +X and -X travel






• 2004 Commanding

The breakdown of commands sent to SABER in 2004 is as follows:



Command Type	Number of commands
Diagnostics or Testing	8
Memory Dump	3
Power-Up	0
Health and Maintenance	6
Operational Change	0
Total:	17



For a list of each command sent in 2004 along with a short description of that command's purpose, click here.

• 2004 Limit Violations

During the year of 2004, there were no reported Red limit violations.