PDS_VERSION          = PDS3
RECORD_TYPE          = STREAM
OBJECT               = TEXT
PUBLICATION_DATE       = 1997-04-26
NOTE                   = "MGS RST Instrument Health Report HEA7116A.TXT"
END_OBJECT           = TEXT
END


Errata
======

     Yesterday's was incorrectly dated 1997-04-24 and labeled HEA7114A.TXT.
It should have been 1997-04-25 and HEA7115A.TXT


B1.0 Transition
===============

     Networking problems continue at Stanford.

     We have been concentrating on obtaining GWE open loop data from the NERT
Cache.  We have complete transfer of data from 97/111 and have part of the
data from 97/112.  The process is slow because the full pass cannot be
obtained in a single query; querying for shorter segments works, but the
length of the segments can only be determined manually by experiment.


Engineering Data
================

     No new data.


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

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

     Data have been obtained from 97/111 and 97/112 as follows:

YYYY/DDD DSS        DSP        SAMP  BW   DSP  BIT  TRK  REC  RECS RECS FIRST
               START    STOP   RATE      MODE RESN MODE  LEN       MSSG  SNR
-------- --- -------- -------- ---- ---- ---- ---- ---- ---- ----- ---- -----
1997/111  15 03:10:00 05:10:00  200  100   1    8   2-W  566 14400   0   ~51.
1997/111  15 05:10:00 07:10:00  200  100   1    8   2-W  566 14400   0   ~49.
1997/111  15 07:10:00 08:10:00  200  100   1    8   2-W  566  7200   0   ~41.
1997/111  15 08:10:00 09:10:00  200  100   1    8   2-W  566  7199   1    ~6.
1997/111  15 09:10:00 10:10:00  200  100   1    8   2-W  566  7198   2    ~0.

1997/111  45 07:15:00 08:15:00  200  100   1    8   2-W  566  7193   7   ~51.
1997/111  45 08:15:00 09:15:00  200  100   1    8   2-W  566  7192   8   ~51.
1997/111  45 09:15:00 10:15:00  200  100   1    8   2-W  566  7192   8   ~53.
1997/111  45 10:15:00 15:05:00  200  100   1    8   2-W  566 34792   8   ~51.

1997/111  15 22:05:00 00:00:00  200  100   1    8   2-W  566 12600   0   ~48.
1997/112  15 00:00:00 08:10:00  200  100   1    8   2-W  566 58798   2   TBD


  Anomalies
  ---------

     There were 572 POCA order errors in the 97/111 data.

     Images of the carrier are visible in spectra around 1997/111-07:00; the
carrier is near 38 Hz at this time, and there are apparent images near 8, 68,
and 96 Hz.  Near 7:20 there are at least half a dozen weaker signals drifting
with the carrier; close inspection suggests some may be double-peaked spurs
that have been reported in steered data previously (97/016, 97/092).

     At about 1997/111-07:35 the signal at DSS 15 disappears, though there
is a hint that it is drifting rapidly through spectra at about 08:20.  At
DSS 45 there is no signal until about 07:25, but it's frequency is not stable
until about 07:45.  This suggests there was a handover from DSS 15 to 45
around that time; neither DSP had correct tuning predicts for the time
when the other station was transmitting.


Closed Loop Data
================

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

     Data collection continues, but labeling and cataloging is on hold while
we deal with other problems.