[amsat-bb] Help with SatPC32 Labjack Yaesu 5500 rotator control

[Alan]

Erich,

So far the stalls have occurred in the middle of the night.  One was showing
the elevation at 4 degrees, with the target at 0.  The Labjack server was
indicating a down command.  I closed and restarted SatPC32 and when I
selected Park, it dropped to 0 and the desired azimuth.  The second time was
an azimuth problem, with a large difference between the commanded and actual
position.  The Labjack server was indicating a turn.  Closing and restarting
cleared the problem.

There are two changes that I know of.  I recently changed the rotor position
change window from 3 degrees to 10 degree to reduce wear, as that is close
enough for LEOs.  I have reset that to 3 degrees to remove the variable.

Mark, G0MGX suggested that I look at KB4103718, which has been reported to
be causing some USB issues.  I have removed it, and will see what happens.
If it happens again, I will get more details.  It certainly looks like
something in the OS rather than SatPC32.  

73,

Alan
WA4SCA



<-----Original Message-----
<From: Erich Eichmann [mailto:erich.eichmann at t-online.de]
<Sent: Wednesday, May 30, 2018 11:06 AM
<To: APBIDDLE at MAILAPS.ORG; AMSAT-BB at amsat.org
<Subject: Re: [amsat-bb] Help with SatPC32 Labjack Yaesu 5500 rotator
control
<
<Hello Alan, Nick and others,
<I didn't make any changes with  ServerLabjack. The file is unchanged
<since Dec. 12. 2012.  SatPC32 itself only outputs the target positions
<to ServerLabjack. Only this file then checks whether the rotors have
<reached the target positions.
<Is there any  correlation between updating  the target positions by
<SatPC32 and stalling of the rotor?
<
<I also use  Windows 7, 64-bit and  the Labjack U-12 with a KR-5600.
<Lately I used it for multiple satellite passes and  I just tested full
<360° turns of the az. rotor/ 90° turns of the el. rotor in both
<direction (entered target postions in menu "Rotor").   No issues so far.
<73s, Erich, DK1TB
<
<Am 30.05.2018 um 16:18 schrieb Alan:
<> Same here, beginning a week or so back.  Investigating, but so far
nothing
<> determined.  Using WIN7 64-bit, and wondering if there was something in
<the
<> recent updates.
<>
<> 73,
<>
<> Alan
<> WA4SCA
<>
<>
<> <-----Original Message-----
<> <From: AMSAT-BB [mailto:amsat-bb-bounces at amsat.org] On Behalf Of
<Nick
<> <Pugh
<> <Sent: Wednesday, May 30, 2018 08:54 AM
<> <To: 'Amsat BB' <AMSAT-BB at amsat.org>
<> <Subject: [amsat-bb] help with yaesu 5500 rotator
<> <
<> <Hello Amsat-ers
<> <
<> <
<> <
<> <I am using an Yaesu 5500 rotator controlled by a Lab jack under Satpc32
<> <v8.1. Intermittently the rotator stall under computer control. The LED
on
<> <the lab jack indicate a signal to control the rotator to move but no
<> <movement. Terminating Satpc32 the rotator works normal. Suggestions??
<> <
<> <
<> <
<> <
<> <
<> <
<> <
<> <Nick k6qxj
<> <
<> <_______________________________________________
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<> <expressed
<> <are solely those of the author, and do not reflect the official views of
<> AMSAT-
<> <NA.
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<>
<> _______________________________________________
<> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum
<available
<> to all interested persons worldwide without requiring membership.
<Opinions expressed
<> are solely those of the author, and do not reflect the official views of
<AMSAT-NA.
<> Not an AMSAT-NA member? Join now to support the amateur satellite
<program!
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