PDS_VERSION_ID               = PDS3
RECORD_TYPE                  = STREAM
STANDARD_DATA_PRODUCT_ID     = HEA
DATA_SET_ID                  =  "MEX-X-MRS-1/2/3-PRM-0128-V1.0"
PRODUCT_ID                   = "M00SUE0L1A_HEA_042381415_00.TXT"
PRODUCT_CREATION_TIME        =  2006-07-18T17:21:34.000
PRODUCER_ID                  = "SUE"
INSTRUMENT_HOST_ID           = "MEX"
OBJECT                       = TEXT
PUBLICATION_DATE               = 2004-08-25
NOTE                           = "DSN MEX Data Collection: Day 238"
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
--- --- -------- -------- ---- --- -- ---- -- ----- ----- ------------ -----
238  63 14:15:00 18:20:00 X/XR   4  1    2 16  8260 14701 4238141A.RSR  52.0
238  63 14:15:00 17:11:59 X/SR   3  1    2 16  8260 10620 4238141B.RSR  39.6
238  63 15:10:21 18:20:00 X/XL   1  1    2 16  8260 11380 4238151C.RSR  18.0
238  63 14:15:01 17:12:00 X/SL   2  1    2 16  8260 10620 4238141D.RSR  18.6

     Gene Goltz notes the following:  The X-band LCP was started late because
of an RSR usage conflict with MGS.  The S-band data recording was stopped
early because the signal disappeared unexpectedly; the reason is unknown, but
the spacecraft was probably commanded to turn its S-band transponder off,
about 2 hours before EOT.

     The X-RCP signal slowly weakens over the first 3.5 hours; the power in
the RSR sample values (including noise in the 2 kHz bandwidth) drops by almost
7 dB.  Then at about 17:35 it suddenly increases 10 dB.

     The S-RCP signal, as Gene notes, disappears at about 16:25.

     The X-LCP power (mostly noise) increases gradually by about 3 dB during
the 3 hours of recording.

     The S-LCP power wanders by a few tenths of a dB during 3 hours of
recording.  There is a 0.2 dB drop when the S-RCP carrier disappears.

     It appears that the cabling or other problem which caused S-RCP and
S-LCP to look identical in the data from 2004/231 has been resolved at
DSS 63.