Subject: NOAA-18, HIRS &, APT, Repeat APT/HIRS Noise Association Test Today, This is a multi-part message in MIME format. --------------060405020401090700030103 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit *Topic:* Repeat of test to examine APT transmitter effect on HIRS instrument *Date/Time(UTC) Message Issued:* 15 June 2007, 1830 UTC *Satellite(s) Involved:* NOAA-18 *Instrument(s) Involved:* HIRS, APT *Product(s) Involved/Affected:* loss of data *Date/Time(UTC) of Initial Implementation:* 15 June 2007, 2017 UTC, approximate test start time 15 June 2007, 2211 UTC, approximate test end time *Details/Specifics of Change:* SOCC has announced that the HIRS instrument on NOAA-18 has quieted down and they will attempt to repeat the noise association test today, June 15. Information from SOCC: If we can get the details arranged in time we will be re-executing the NOAA-18 HIRS test where we turn off and on the VTX and BTX transmitters. The first pass (orbit 10666) runs from 20:17:50z to 20:29:50z. The HIRS will remain parked at the end of this pass. The second pass(orbit 10667) is at 21:57:30z to 22:10:30z. At the end of this pass the spacecraft should be back to its original configuration. ***** Information from May 10 test - same procedure will be followed ***** Proposed test scenario: The instrument will be placed in space view for two orbits in order to provide a uniform background and then we will systematically turn-on/off the various transmitters and monitor the noise looking for any noise spikes. After the command sequence has been run, the instrument will be returned to full-scan mode. First command sequence about 9 minutes: - Park HIRS at space view, wait 2 minutes - Turn VTX2 off, wait 2 minutes - Turn BTX1 off, wait 2 minutes - Turn BTX1 on, wait 2 minutes - Turn VTX1 on, wait 2 minutes - Turn VTX1 off, wait 10 seconds - Turn VTX2 on HIRS remains in space view mode Second command sequence about 9 minutes: - Turn VTX2 off, wait 10 seconds - Turn BTX2 on, wait 2 minutes - Turn BTX2 off, wait 2 minutes - Turn BTX1 on, wait 2 minutes - Turn VTX2 on, wait 10 seconds - HIRS to full scan mode *Contact Person(s) Name/Email/Phone Number for Questions:* Emily Harrod Emily.Harrod@noaa.gov 301-817-3882 Renee Smith-Dearing Renee.Smith@noaa.gov 301-817-4117 Jim Walters Jim.Walters@noaa.gov 301-817-4033 *Web site(s) that contain other relevant information (where applicable):* http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status http://www.oso.noaa.gov/goes/index.htm - SOCC geostationary satellite status http://www.oso.noaa.gov/daily-news/index.asp - SOCC morning reports ** ******************************************* * * Emily D. Harrod * NOAA/NESDIS/OSDPD/IPD * Computer Operations Branch * Pre-Product Processing Group * E/SP11, NSOF, room 1460 * 4231 Suitland Road * Suitland, Maryland 20746-4304 * USA * voice 301-817-3882 * fax 301-817-3902 * email Emily.Harrod@noaa.gov * ******************************************* --------------060405020401090700030103 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Topic:
Repeat of test to examine APT transmitter effect on HIRS instrument

Date/Time(UTC) Message Issued:
15 June 2007, 1830 UTC

Satellite(s) Involved:
NOAA-18

Instrument(s) Involved:
HIRS, APT

Product(s) Involved/Affected:
loss of data

Date/Time(UTC) of Initial Implementation:
15 June 2007, 2017 UTC, approximate test start time
15 June 2007, 2211 UTC, approximate test end time

Details/Specifics of Change:

SOCC has announced that the HIRS instrument on NOAA-18 has quieted down and they will attempt to repeat the noise association test today, June 15.

Information from SOCC: If we can get the details arranged in time we will be re-executing the NOAA-18 HIRS test where we turn off and on the VTX and BTX transmitters. The first pass (orbit 10666) runs from 20:17:50z to 20:29:50z. The HIRS will remain parked at the end of this pass. The second pass(orbit 10667) is at 21:57:30z to 22:10:30z. At the end of this pass the spacecraft should be back to its original configuration.

***** Information from May 10 test - same procedure will be followed *****

Proposed test scenario: The instrument will be placed in space view for two orbits in order to provide a uniform background and then we will systematically turn-on/off the various transmitters and monitor the noise looking for any noise spikes. After the command sequence has been run, the instrument will be returned to full-scan mode.

First command sequence about 9 minutes:
- Park HIRS at space view, wait 2 minutes
- Turn VTX2 off, wait 2 minutes
- Turn BTX1 off, wait 2 minutes
- Turn BTX1 on, wait 2 minutes
- Turn VTX1 on, wait 2 minutes
- Turn VTX1 off, wait 10 seconds
- Turn VTX2 on

HIRS remains in space view mode

Second command sequence about 9 minutes:
- Turn VTX2 off, wait 10 seconds
- Turn BTX2 on, wait 2 minutes
- Turn BTX2 off, wait 2 minutes
- Turn BTX1 on, wait 2 minutes
- Turn VTX2 on, wait 10 seconds
- HIRS to full scan mode

Contact Person(s) Name/Email/Phone Number for Questions:
Emily Harrod Emily.Harrod@noaa.gov 301-817-3882
Renee Smith-Dearing Renee.Smith@noaa.gov 301-817-4117
Jim Walters Jim.Walters@noaa.gov 301-8

Web site(s) that contain other relevant information (where applicable):
     http://www.osdpd.noaa.gov/PSB/PPP/PPP.html - History of level 1B notices
     http://www.ssd.noaa.gov/PS/SATS/messages.html - All user notices
     http://www.oso.noaa.gov/poes/index.htm - SOCC polar satellite status
   http://www.oso.noaa.gov/goes/index.htm - SOCC geostationary satellite status
     http://www.oso.noaa.gov/daily-news/index.asp - SOCC morning reports


*******************************************
*
* Emily D. Harrod
* NOAA/NESDIS/OSDPD/IPD
* Computer Operations Branch
* Pre-Product Processing Group
* E/SP11, NSOF, room 1460
* 4231 Suitland Road
* Suitland, Maryland  20746-4304
* USA
* voice 301-817-3882
* fax   301-817-3902
* email Emily.Harrod@noaa.gov
*
*******************************************

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