The stereo plug is, I believe, a red herring. The sockets in the motors and
winders are 2 conductor. The extra contact in the plug allows insertion
without causing the momentary short that would cause the motor to fire a
frame.
John
Camtech
R. Lee Hawkins wrote:
> Hi all:
> I have two questions about Olympus cords:
>
> 1. The M.Quartz Control 1 cord uses a 3 conductor stereo 2.5mm
> plug, as does its extension cord. Apparently this is to allow
> for "feedback" from the motor drive/winder. However, in looking
> at the jack for this plug on the Winder 2, it apparently is
> only 2 conductor (mono). This leads me to believe that this
> "feedback" only comes from the motor drive. What does this
> feedback consist of? A pulse everytime a exposure is taken?
> Why is this necessary, if that's what it is?
>
>
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