PDS_VERSION_ID               = PDS3
RECORD_TYPE                  = STREAM
STANDARD_DATA_PRODUCT_ID     = HEA
DATA_SET_ID                  =  "MEX-X-MRS-1/2/3-PRM-0147-V1.0"
PRODUCT_ID                   = "M00SUE0L1A_HEA_042311415_00.TXT"
PRODUCT_CREATION_TIME        =  2006-07-17T14:04:16.000
PRODUCER_ID                  = "SUE"
INSTRUMENT_HOST_ID           = "MEX"
OBJECT                       = TEXT
PUBLICATION_DATE               = 2004-08-19
NOTE                           = "DSN MEX Data Collection: Day 231"
END_OBJECT                   = TEXT
END


Open Loop Data
==============

  Data Collection
  ---------------

     We have completed quick-look processing on the following MEX RSR open
loop data at Stanford:

DOY DSS        RSR        BAND RSR CH KSPS BT  REC   RECS      RSR      MAX
          START    STOP         ID         RS  LEN          FILE NAME   SNR
--- --- -------- -------- ---- --- -- ---- -- ----- ----- ------------ -----
231  63 14:15:00 17:45:00 X/XR   4  1    2 16  8260 12601 4231141A.RSR  48.3
231  63 14:15:00 17:45:00 X/SR   3  1    2 16  8260 12601 4231141B.RSR  40.6
231  63 14:15:00 17:45:00 X/XL   2  1    2 16  8260 12601 4231141C.RSR  28.6
231  63 14:15:00 17:45:00 X/SL   1  1    2 16  8260 12601 4231141D.RSR  40.5

     These are the first MEX data collected for solar corona studies.
Although the PI had requested S-band uplink for these experiments, ESOC has
specified X-band uplink -- at least until after solar conjunction.

     Sami Asmar has noted that the S-RCP and S-LCP SNR's appear to be almost
identical, suggesting that the S-RCP microwave signal was fed to both RSR's.
He is investigating.

     The distribution of X-RCP samples is very close to the clipping level;
setting FGAIN about 3 dB higher should solve this problem.  It appears that
a higher FGAIN was used for a few minutes at the beginning of the recording
but then was reduced by about 3 dB.  The S-RCP FGAIN appears to have been
increased by about 2 dB at approximately the same time.

     Depending on resolution of the S-band duplication question above, the
values of FGAIN could probably be reduced by about 10 dB on the S-RCP, X-LCP,
and S-LCP RSR's.

     There is little or no drift of the carrier frequency during the 210
minutes of recording.

     There are weak spurs at approximately +/-600 Hz from the carrier in
X-RCP.

     The browse images (Postscript 4-panel plots) and the X-RCP RSR file are
being transferred to the Stanford partition on jupiter at IGM in Cologne;
but this will take 5 hours at the current rate.  All four Postscript files
and all four RSR files will be written to CD and mailed also.