PDS_VERSION_ID               = PDS3
RECORD_TYPE                  = STREAM
DATA_SET_ID                  =  "MEX-M-MRS-1/2/3-EXT2-2476-V1.0"
STANDARD_DATA_PRODUCT_ID     = ENB
PRODUCER_ID                  = "SUE"
PRODUCT_ID                   = "M00SUE0L1A_ENB_101701530_00.TXT"
PRODUCT_CREATION_TIME        =  2012-10-10T13:50:44.000
INSTRUMENT_HOST_ID           = "MEX"
OBJECT                       = TEXT
  PUBLICATION_DATE             = 2011-03-10
  NOTE                         = "MEX SUE Experimenter Notes"
END_OBJECT                   = TEXT
END

From daniel.s.kahan@jpl.nasa.gov Sat Jun 19 10:47:57 2010
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From: "Kahan, Daniel S (332K)" <daniel.s.kahan@jpl.nasa.gov>
To: "Simpson, Richard A (6520-Affiliate)" <rsimpson@magellan.stanford.edu>
Date: Sat, 19 Jun 2010 10:47:55 -0700
Subject: MEX BSR on 2010-170
Thread-Topic: MEX BSR on 2010-170
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Dick,

My apologies. It was necessary to use the VSR again for this support as
there were indications of corrupt data occurring for other missions at
RSR1 at Madrid. As you may be aware, the subchannels are configured a
little differently on the VSR, and for the pre-cal, I mistakenly recorded
the 8-khz bandwidth (schan "1n2") instead of the 25-khz bandwidth (schan
"2n1"). (The VSRs don't have a graphical display indicating which
subchannels are being recorded like the RSRs, so there is no indication of
recording status unless you enter a command to check or bring up an FFT.)
The remainder of the experiment will be done on the proper subchannel. I
hope the 8-khz data can still be useful for calibration, or that at least
the remaining calibrations are sufficient.

Danny






From rsimpson Mon Jun 21 10:44:40 2010
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Date: Mon, 21 Jun 2010 10:44:39 -0700 (PDT)
From: Dick Simpson 650-723-3525 <rsimpson>
Message-Id: <201006211744.o5LHidh10643@magellan.stanford.edu>
To: daniel.s.kahan@jpl.nasa.gov
Subject: Re: MEX BSR on 2010-170
Cc: rsimpson
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>I hope the 8-khz data can still be useful for calibration, or that at least
>the remaining calibrations are sufficient.

  Using 8 kHz instead of 25 kHz for the pre-cal should make very little
difference.  The measurements themselves will be a little noisier, but
that's about the only effect.






From daniel.s.kahan@jpl.nasa.gov Mon Jun 21 11:18:03 2010
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To: "Simpson, Richard A (6520-Affiliate)" <rsimpson@magellan.stanford.edu>
Date: Mon, 21 Jun 2010 11:18:01 -0700
Subject: RE: MEX BSR on 2010-170
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Good. I'm relieved. :)

-----Original Message-----
From: Dick Simpson 650-723-3525 [mailto:rsimpson@magellan.stanford.edu]
Sent: Monday, June 21, 2010 10:45 AM
To: Kahan, Daniel S (332K)
Cc: Simpson, Richard A (6520-Affiliate)
Subject: Re: MEX BSR on 2010-170


>I hope the 8-khz data can still be useful for calibration, or that at
>least the remaining calibrations are sufficient.

  Using 8 kHz instead of 25 kHz for the pre-cal should make very little
  difference.  The measurements themselves will be a little noisier, but
  that's about the only  effect.





From rsimpson Mon Jun 21 11:01:16 2010
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Date: Mon, 21 Jun 2010 11:01:16 -0700 (PDT)
From: Dick Simpson 650-723-3525 <rsimpson>
Message-Id: <201006211801.o5LI1G210833@magellan.stanford.edu>
To: gene.goltz@jpl.nasa.gov
Subject: Re: MEX 2010-170 BSR NMC Log
Cc: daniel.s.kahan@jpl.nasa.gov, rsimpson
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>Attached is the NMC log for the 19 June (DOY 170) MEX BSR that was
>conducted over DSS-63.  I've sent this differently than Danny does
>it, so please let me know if there are any problems with your get-
>ting it (in particular, if it's too big for your e-mail server).

  I had to convert back to the original file name (101701409.L03.6304100170),
  which my Stanford software uses to create a new file name and
  registration.  Everything else seems normal.

  There should be no problem with e-mail file sizes.  In practical
  terms, the only limit here is the amount of disk space available
  on the computer.

  Thanks also for the ops log/spreadsheet.  And I replied to Danny's
  separate e-mail about the 8 kHz recording -- if you're going to
  slip up, recording the pre-cal at 8 kHz is about the lowest impact
  error possible.

  Thanks for another well-done operation.  I'll start transferring
  data when I see something on rsops2.

  Dick




~From gene.goltz@jpl.nasa.gov Mon Jun 21 13:53:41 2010
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To: Dick Simpson 650-723-3525 <rsimpson@magellan.stanford.edu>
From: Gene Goltz <gene.goltz@jpl.nasa.gov>
Subject: MEX 2010-170 Bistatic Radar Data
Cc: Sami Asmar <sami.asmar@jpl.nasa.gov>, Daniel.S.Kahan@jpl.nasa.gov
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Dick,

A MEX Bistatic Radar Experiment on DOY 2010-170 was conducted at DSS-63.
RSR open-loop data were recorded and played back as follows:

     -  X-band RCP, 1-way
     -  RSR2B3
     -  25 kHz, 16 bits
     -  15:30:00 - 16:40:00
     -  17:51:00 - 18:28:00
     -  18:28:00 - 19:15:00
     -  19:15:00 - 20:04:00
     -  20:04:00 - 21:00:00

   and:

     -  S-band RCP, 1-way
     -  RSR2A3
     -  25 kHz, 16 bits
     -  15:30:00 - 16:40:00
     -  17:51:00 - 18:28:00
     -  18:28:00 - 19:15:00
     -  19:15:00 - 20:04:00
     -  20:04:00 - 21:00:00

plus:
     -  X-band RCP, 1-way
     -  RSR2B4
     -  100 kHz, 16 bits
     -  18:28:00 - 18:49:00
     -  18:49:00 - 19:10:00
     -  19:10:00 - 19:31:00
     -  19:31:00 - 19:51:00
     -  19:51:00 - 20:04:00

  and:

     -  S-band RCP, 1-way
     -  RSR2A4
     -  100 kHz, 16 bits
     -  18:28:00 - 18:49:00
     -  18:49:00 - 19:10:00
     -  19:10:00 - 19:31:00
     -  19:31:00 - 19:51:00
     -  19:51:00 - 20:04:00

These data should now be available in your MEX directory on rsops2.  LCP
will be played back and reformatted (WVSR to RSR) tomorrow.


- Regards,
   Gene & Danny






From gene.goltz@jpl.nasa.gov Wed Jun 23 06:55:32 2010
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To: Dick Simpson 650-723-3525 <rsimpson@magellan.stanford.edu>
From: Gene Goltz <gene.goltz@jpl.nasa.gov>
Subject: MEX 2010-170 Bistatic Radar Data -- LCP
Cc: Sami Asmar <sami.asmar@jpl.nasa.gov>, Daniel.S.Kahan@jpl.nasa.gov
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Dick,

A MEX Bistatic Radar Experiment on DOY 2010-170 was conducted at DSS-63.
RSR open-loop data were recorded and played back as follows:

     -  X-band LCP, 1-way
     -  WVSR1B1N1
     -  8 kHz, 16 bits
     -  15:30:00 - 16:40:00

  and:

     -  S-band LCP, 1-way
     -  WVSR1A1N1
     -  8 kHz, 16 bits
     -  15:30:00 - 16:40:00

plus:

     -  X-band LCP, 1-way
     -  WVSR1B2N1
     -  25 kHz, 16 bits
     -  17:51:00 - 18:28:00
     -  18:28:00 - 19:15:00
     -  19:15:00 - 20:04:00
     -  20:04:00 - 21:00:00

   and:

     -  S-band LCP, 1-way
     -  WVSR1A2N1
     -  25 kHz, 16 bits
    -  17:51:00 - 18:28:00
     -  18:28:00 - 19:15:00
     -  19:15:00 - 20:04:00
     -  20:04:00 - 21:00:00

plus:
     -  X-band LCP, 1-way
     -  WVSR1B2N2
     -  100 kHz, 16 bits
     -  18:28:00 - 18:49:00
     -  18:49:00 - 19:10:00
     -  19:10:00 - 19:31:00 *
     -  19:31:00 - 19:51:00 *
     -  19:51:00 - 20:04:00 *

  and:

     -  S-band LCP, 1-way
     -  WVSR1A2N2
     -  100 kHz, 16 bits
     -  18:28:00 - 18:49:00
     -  18:49:00 - 19:10:00
     -  19:10:00 - 19:31:00 *
     -  19:31:00 - 19:51:00 *
     -  19:51:00 - 20:04:00 *

With the exception of the 6 100 kHz files identified with asterisks (*),
these data should now be available in your MEX directory on rsops2.  Due
to the disk being 99% full, the last 6 files will not be moved to rsops2
until space is freed up.


- Regards,
   Gene & Danny





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From: "Chen, Wilson C" <wilson.chen@dsn.nasa.gov>
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The listed file have been processed and delivered to:

OSCARX://ftp/ras/sc41/odfs/10170O170_63X_1s.SC041
OSCARX://ftp/ras/sc41/odfs/10170O170_63S_1s.SC041

Regards,

Wilson Chen
RMDC Analyst
Office - 626-305-6269
Cell - 626-552-8281

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From susan.c.kurtik@jpl.nasa.gov Tue Jun 29 08:28:53 2010
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When: Wednesday, June 30, 2010 9:00 AM-10:00 AM. Pacific Standard Time
Where: telecon 818 393-0884

*~*~*~*~*~*~*~*~*~*

Review DSN investigation of instability issues reported by Dick Simpson on
DOY170

Latest MEX BSR Report:
Both S-Band LNAs continue to be unstable.  S-RCP power varied by about
0.5 dB during the pre-cal with the ambient load connected.  Somewhat smaller
variations can be seen with the ambient load connected during the post-cal.
Because of the instability, it may not be possible to calibrate the noise
diode from the post-cal ambient load data (with and without the noise
diode).  Other configurations are usually preferred, but the ambient load
configuration provides a cross-check on receiver linearity.  S-RCP gain also
appeared to vary by up to 0.2 dB during the surface observations on time
scales of 10 minutes; this will introduce about a +/-2.5 percent error in
the S-RCP echo power estimate.

  Instabilities in the S-LCP LNA are more confined in time but larger in
magnitude.  At 19:15 the S-LCP noise power suddenly increased by about 0.2 dB
over about one minute in time.  The noise power appeared to remain at the new
level for the remainder of the observations ... except that starting at 19:27
the noise power began to decrease.  The rate accelerated until about 2.5 dB
in noise power had been lost at 19:31:30.  Over the next minute, the noise
power returned to its previous (e.g., 19:26) level. Similar 2.5 dB dropouts
over 5-6 minutes have been noted during the bistatic radar experiments on days
106, 135, and 142 (all on S-LCP at DSS 63).


DSN DRs to document 170 18:29 - 19:38 incident report:
During the MEX Bi-Static radio science support the principle investigator
reported the S-band RCP varied around 0.5 dB during the pre-cal when
measuring the ambient load. This variation was also noticed during the
post-cal. During the actual surface observations the S-RCP gain varied by
0.2 dB. Comments: The principle investigator reported this will introduce
about +/- 2.5 percent error in the S-band RCP echo power estimate.

The RSR was RED at the start of the MEX Bi-Static activity. This impacted
the LCP for X and S-band data. The station used the WVSR to capture the LCP
X and S-band data.

During the MEX Bi-Static radio science support the principle investigator
reported instabilities in the S-band LCP. At 19:15z the S-LCP noise power
increased by 0.2 dB and remained at that level until 19:27 when the noise
power decreased. At 19:31:30z the noise power disappeared then a minute
later reappeared at the same level that was observed at 19:26z. The
principle investigator reported S-LCP are confined in time, but larger in
magnitude.





From scott.riley@dsn.nasa.gov Wed Jun 30 13:03:38 2010
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Subject: RE: FW: MEX BSR High SNT
Date: Wed, 30 Jun 2010 13:04:44 -0700
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From: "Riley, Scott L" <scott.riley@dsn.nasa.gov>
To: "Dick Simpson 650-723-3525" <rsimpson@magellan.stanford.edu>
Cc: <","@stanford.edu>, "Pitzer, Donald M" <donald.pitzer@dsn.nasa.gov>,
        <gene.l.goltz@jpl.nasa.gov>,
        "Matossian, Harout" <harout.matossian@dsn.nasa.gov>,
        "Valencia, Jose" <jose.valencia@dsn.nasa.gov>,
        "Metes, Mircea M" <mircea.metes@dsn.nasa.gov>,
        <sami.w.asmar@jpl.nasa.gov>
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Status: R

You are welcome, I think at this time there was a combination of the
board being replaced and the I/F switch being repaired.

Have a great 4th,

--Scott

-----Original Message-----
From: Dick Simpson 650-723-3525 [mailto:rsimpson@magellan.stanford.edu]
Sent: Wednesday, June 30, 2010 12:03 PM
To: Riley, Scott L
Cc: ","@stanford.edu; Pitzer, Donald M; gene.l.goltz@jpl.nasa.gov;
Matossian, Harout; Valencia, Jose; Metes, Mircea M;
sami.w.asmar@jpl.nasa.gov
Subject: Re: FW: MEX BSR High SNT

susan.c.kurtik@jpl.nasa.gov,terry.anderson@dsn.nasa.gov,
varanasi@mail.jpl.nasa.gov,arthur.landon@dsn.nasa.gov,
tony.medeiros@dsn.nasa.gov,rsimpson

>This was the correspondence on the replacement of the CNV board at
GDSCC
>back in January.

  Scott:

  I went back through my notes and found e-mail from Larry Bracamonte on
  19 and 25 January mentioning replacement of the RSR3 CNV board.  Since
  Larry talked in terms of a 1.4 dB improvement, I didn't connect it
  directly to the Y-factor correction of 7 dB that we saw in test
  results collected on 21 January.  Without knowing what was wrong with the
  board,  I still don't know how to make that translation; but I'll accept
  that I was notified and apologize for not recognizing it as such.

  Thanks for the follow-up information.

  Dick





From rsimpson Wed Jun 30 13:16:01 2010
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Date: Wed, 30 Jun 2010 13:15:59 -0700 (PDT)
From: Dick Simpson 650-723-3525 <rsimpson>
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Subject: DSS 63 S-LCP Dropouts
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This is a MIME encoded message.  Decode it with "munpack"
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---

Attached is a compilation of the 'dropout' errors we have been
seeing at DSS 63 on S-LCP.

The precursor in slide 2 is unique.

The event in slide 3 may be different; the power loss overlays
a noise diode calibration, so it is difficult to tell what the
signature of each should be.

The second event in slide 5 may also be different; it's not as
deep or as long as the others.  Curiously, it occurs after the
antenna has reached the 'stow' position.

The other events are very similar, and they seem to occur near
EL=45.

I will report on any new events from the experiment on day 184.
Then we can discuss next Wednesday.

Thanks for your help,
Dick

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