Subject: Administrative: Suomi-NPP Table 21 Upload and Star Tracker This is a multi-part message in MIME format. --Boundary_(ID_eUFup/Se2A7VugAEwy818A) Content-type: text/plain; charset=utf-8; format=flowed Content-transfer-encoding: 8BIT *Topic:* SNPP Table 21 Upload planned for Tuesday September 20, 2016 *Date/Time Issued:* September 19, 2016 2246Z *Products or Data Impacted:* None Expected *Date/Time of Initial Impact:* September 20, 2016 1640Z *Date/Time of Expected End:* September 22, 2016 1630Z *Length of Outage:* See details below *Details/Specifics of Change:* On Tuesday September 20, 2016, an updated Command Block Memory (CBM) Table (Table 21) will be loaded to S-NPP with commands to patch Star Tracker software. The patch is to lower the Star Tracker Thermo-Electric Cooler (TEC) setpoint by 10 degrees Celcius in order to improve Star identification. During the upload of this CBM, the on-board CBM will be stopped, and will prevent some of ATMS Scan Reversals from running. Scan Reversals will be managed via ground command and may not coincide with nominal cadence, and some reversals may be missed. On Wednesday September 21, 2016, Star Tracker #1 will be patched by from the CBM, followed by patching Star Tracker #2 on Thursday September 22, 2016. Timeline of activities are as follows: Tuesday September 20, 2016: 1639Z-1651Z SVL 25386: Upload CBM 1645Z: ATMS scan reversal will not be executed. 1650Z: Approximate time for manual ATMS scan reversal. Subject to miss reversal during this orbit. 1822Z-1833Z (SVL 25387): Backup upload opportunity. If CBM needs to be uploaded during this orbit, ATMS Scan Reversals will need to managed from ground for next two orbits, and the back orbit Scan Reversal will be missed for orbit 25387. Wednesday September 21, 2016: Patch Star Tracker #1 14:36Z—14:50Z SVL 25399: Activate CBM Block for Star Tracker #1. No data impact expected. Thursday September 22, 2016: Patch Star Tracker #2 1600Z—1613Z SVL 25414: Activate CBM Block for Star Tracker #2. No data impact expected. *Contact Information for Further Information:* USMCC Operations usmcc@noaa.gov at 301-817-4576 *Web Site(s) for applicable information:* N/A You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may take up to two business days to process your unsubscribe request. --Boundary_(ID_eUFup/Se2A7VugAEwy818A) Content-type: text/html; charset=utf-8 Content-transfer-encoding: 8BIT
Topic: SNPP Table 21 Upload planned for Tuesday September 20, 2016
Date/Time Issued: September 19, 2016 2246Z
Products or Data Impacted: None Expected
Date/Time of Initial Impact: September 20, 2016 1640Z
Date/Time of Expected End: September 22, 2016 1630Z
Length of Outage: See details below
Details/Specifics of Change:
On Tuesday September 20, 2016, an updated Command Block Memory
(CBM) Table (Table 21) will be loaded to S-NPP with commands to
patch Star Tracker software. The patch is to lower the Star
Tracker Thermo-Electric Cooler (TEC) setpoint by 10 degrees
Celcius in order to improve Star identification. During the
upload of this CBM, the on-board CBM will be stopped, and will
prevent some of ATMS Scan Reversals from running. Scan
Reversals will be managed via ground command and may not
coincide with nominal cadence, and some reversals may be
missed.
On Wednesday September 21, 2016, Star Tracker #1 will be
patched
by from the CBM, followed by patching Star Tracker #2 on
Thursday September 22, 2016.
Timeline of activities are as follows:
Tuesday September 20, 2016:
1639Z-1651Z SVL 25386: Upload CBM
1645Z: ATMS scan reversal will not be executed.
1650Z: Approximate time for manual ATMS scan reversal. Subject
to miss reversal during this orbit.
1822Z-1833Z (SVL 25387): Backup upload opportunity. If
CBM needs
to be uploaded during this orbit, ATMS Scan Reversals will need
to managed from ground for next two orbits, and the back orbit
Scan Reversal will be missed for orbit 25387.
Wednesday September 21, 2016: Patch Star Tracker #1
14:36Z—14:50Z SVL 25399: Activate CBM Block for Star
Tracker #1.
No data impact expected.
Thursday September 22, 2016: Patch Star Tracker #2
1600Z—1613Z SVL 25414: Activate CBM Block for Star Tracker
#2.
No data impact expected.
Contact Information for Further
Information:
USMCC Operations usmcc@noaa.gov at
301-817-4576
Web Site(s) for applicable information: N/A
You have been sent this and other notifications because
you have
opted in to receive it. If for any reason, you wish to
unsubscribe, please contact ESPC Help Desk at
ESPCOperations@noaa.gov
or (301) 817-3880. Please note: it may
take up to two business days to process your unsubscribe
request.