Thanks Joe and Ken. Still getting my head around the problem, which is advanced for me. Appreciate the feedback and pointers.
Quote:
Originally Posted by Merlin66
Re Positive/ negative grounding....
Is it really a problems which one you use?
The function of the ST-4 is just a open/ close switch between the common line and the directional line.
If the original handcontroller works with directional switching based on a positive then why would the ST-4 type connections (with a positive common) not work the same way????
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Ken. The mount is +ve common and the ST4 source -ve common. The ST4 will be a propriety stand-alone guider. The common sources should be connected somehow or so I understand.
Joe. An
inverting optocoupler seems to be an option. Would this mean inverting all signals - ST4 and common? I would think so? An up-to-date appraisal would be very helpful.