[Isocops] USN/AUS @0800 11 Sept 10

Ibex Mission Operations ibexops at gmail.com
Sat Sep 11 05:28:17 EDT 2010


Guys,
   The tracking contact for Orbit# 92 failed for intermittent
command/telemetry.
At AOS, USN notified IBEX moc that frame sync lock was weak.
 I then changed the downlink rate to 64K and the problem continued.  The
ground station was re configured and the issue remained.
The FC was dumped with excessive errors.  VC1= 1045/275
@0800  ebno=8.94 - 9.57 dbm (320ksps
@0802  ebno=13.89 dbm (64ksps)
@0809  ebno=10.0 - 20.0 dbm (64ksps)
@0833  ebno=12.67 - 13.4 dbm (64ksps)

The full Goat Herder will be sent out today.

IBEX Orbit# 92 J2000 Target Vectors
    J2000 *Spin Axis* ECI X *-0.980104* ECI Y *0.177867* ECI Z *0.088091*

    *Precession Maneuver*
    MPS Diff *0.600* deg   *MPS Diff should be < 1.5*


    0.03315840 ActNor.EstInrToBdy[0] -0.67442900 ActNor.EstInrToBdy[1]
-0.16718500 ActNor.EstInrToBdy[2] 0.71839700 ActNor.EstInrToBdy[3]     *
968229000.000* ActNor.EstTime

-- 
Sheral R. Wesley
SPVR., Satellite Operations
IBEX Mission OPS
(304) 279-6678
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