PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM
OBJECT                = TEXT
 PUBLICATION_DATE     = 1999-09-07
 NOTE                 = " E-mail and other messages
                          concerning MGS Radio Science on
                          or about 1997/088."
END_OBJECT            = TEXT
END


From trish@rodan.jpl.nasa.gov Fri Mar 28 16:32:10 1997
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Message-Id: <199703290030.QAA03565@rodan.Jpl.Nasa.Gov>
Date: 28 Mar 97 16:35:58 -0800
From: Trish Priest <trish@rodan.jpl.nasa.gov>
Subject: USO/KaBLE Test Tonight
To: Bill Adams <William.R.Adams@ast.lmco.com>,
        Stan Butman <Stanley.A.Butman@jpl.nasa.gov>,
        Dick Simpson <rsimpson@magellan.stanford.edu>,
        Joe Twicken <joe@neptune.stanford.edu>
Cc: Sami Asmar <Sami.W.Asmar@ccmail.jpl.nasa.gov>,
        Dave Morabito <David.D.Morabito@ccmail.jpl.nasa.gov>
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Status: R

Hello, everyone,

The USO/KaBLE test is tonight during the DSS 15 track.  The timing is as
follows:

00:20:00   Precal for DSS 15
04:22:38   USO Test begins.  KaBLE off. S4 switch at B (MOT 2 VCO)
04:52:38                     KaBLE on.  S4 same.
05:22:38                                S4 switch at A (MOT 1 VCO)
05:52:38                     KaBLE off. S4 same.
06:22:38                                S4 switch at C (USO)
06:52:38                     KaBLE on.  S4 same
07:22:38   End USO Test.
07:50:00   End of Track

There isn't a lot of time to retransmit data at the end of the track, but
we are doing a GWE rehearsal on Monday, so we can do a brief retransmission
then if necessary.

-Trish

--------------------------------------------------------------------------
From trish@rodan.jpl.nasa.gov Mon Mar 31 08:42:02 1997
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Message-Id: <199703311640.IAA05918@rodan.Jpl.Nasa.Gov>
Date: 31 Mar 97 08:45:25 -0800
From: Trish Priest <trish@rodan.jpl.nasa.gov>
Subject: KaBLE/USO Test Report
To: Bill Adams <William.R.Adams@ast.lmco.com>,
        Stan Butman <Stanley.A.Butman@jpl.nasa.gov>,
        Dick Simpson <rsimpson@magellan.stanford.edu>,
        Joe Twicken <joe@neptune.stanford.edu>,
        Len Tyler <len@nova.stanford.edu>
Cc: Sami Asmar <Sami.W.Asmar@ccmail.jpl.nasa.gov>,
        Dave Morabito <David.D.Morabito@ccmail.jpl.nasa.gov>,
        Tom Thorpe <Tom.E.Thorpe@jpl.nasa.gov>
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Status: RO

The KaBLE/USO test went well.  Everything went according to the schedule in
my previous message.  If you are going to query data, use those times.

The DSP was set up for a standard USO test - 5000 sps, 2.5kHz BW,
                                             12-bit, mode 2.

I will be doing any necessary retransmissions during the DSS 15 pass on
Monday evening (DOY 091).  There is a telemetry-off USO test during that
track.  The GWE rehearsal for DSS 15 is on Wednesday evening (DOY 093).

Please let me know if you have any questions.

-Trish


------------------------------------------------------------------------
From joe Wed Apr  2 18:00:35 1997
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Date: Wed, 2 Apr 1997 18:00:35 -0800 (PST)
From: Joe Twicken <joe>
Message-Id: <199704030200.SAA06886@nova.stanford.edu>
To: rsimpson@nova.stanford.edu
Subject: KaBLE Tests
Status: RO

Data from the KaBLE mode tests on 92/088 were collected at DSS 15 in six
half-hour segments covering the total time span 04:22:38-07:22:38. KaBLE went
through six combinations of ON/OFF and frequency reference:

       (a)  04:22:38   Test begins.  KaBLE off. S4 switch at B (MOT 2 VCO)
       (b)  04:52:38                 KaBLE on.  S4 same.
       (c)  05:22:38                            S4 switch at A (MOT 1 VCO)
       (d)  05:52:38                 KaBLE off. S4 same.
       (e)  06:22:38                            S4 switch at C (USO)
       (f)  06:52:38                 KaBLE on.  S4 same

The open-loop data were acquired in sampling mode 2 at 5 ksps with 12 bits
per sample. The data were steered with the spk_c_970129-970510 SP-kernel
file. The product creation date for this kernel was 97/083. The Allan
Deviation for each of the segments is as follows (all AD values are times
1e-13):

     t, sec   AD-a    AD-b    AD-c    AD-d    AD-e    AD-f

     0.4096  3.3486  3.1405  3.3121  3.2476  3.4243  3.4917
     1.6384  1.8247  1.9014  1.7420  1.9206  2.1654  2.4809
     3.2768  1.5305  1.7388  1.4423  1.6557  1.7641  1.8549
     6.5536  1.2461  1.4239  1.0009  1.2077  1.0002  1.3306
    26.2144  0.9236  0.9019  0.8943  1.0516  0.8454  0.9296

The frequency stability was comparable in all cases. The worst overall
performance was case (f) above with KaBLE on and S4 switch at C (USO). At the
shorter integration times, the next worst performance was case (e) above
with KaBLE off and S4 switch at C (USO). At the middle to long integration
times, the performance of case (b) with KaBLE on and switch S4 at B (MOT 2
VCO) was also amongst the worse.