[TowerTalk] Debugging Cabling problems

[W3YY]

Michael -

I can't find my notes, but a pair of control wires goes to each
stepper-motor.  Consequently, it's easy to verify continuity to the motors
by measuring the resistance at each wire pair from the ground.  SteppIR
should have put the DB-25 wiring in their instruction book, but did not.
You can contact them to find out which pairs go to which pins.

73, Bob - W3YY


----- Original Message ----- 
From: "Michael Hatzakis K3MH" <k3mh at arrl.net>
To: <towertalk at contesting.com>; <SteppIR at yahoogroups.com>
Sent: Tuesday, June 08, 2004 7:04 PM
Subject: [TowerTalk] Debugging Cabling problems


> Steppir group,
>
> I recall a ways back, a discussion of using control cable impedances to
> debug a control cable problem.
>
> Right now my steppir is behaving all wacky.  Takes a tuning of 15+ mhz for
> 20 meters and changes depending upon the 180 or reverse config.  This is
> similar to what happened when one of the wires broke off my DB-25 to the
> control unit.  This time, the DB-25 is fine.  Can someone forward to me
what
> they might ave done to see if a control cable wire is broken between my
> shack and the antenna?
>
> Michael
>
> K3MH
>
> VERY Happy Steppir Customer
> Bellevue, WA
>
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