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Tension Motor Wiring How to wire up tension motors. |
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Tension Motor Wiring How to wire up tension motors. |
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Variac allows camera operator to control the overall power to the tension motors. Power resistors across the relay outputs (R) allows a small bit of power to leak to tension motors when relay is off, to ensure the film doesn't unspool.
In the opcsdefs.opc file, configure the tension command to control the port/bit mask on your parallel port, eg:
tension a 378 01 00 0 # aerial projector tension: pin 2
tension b 378 02 00 0 # main projector tension: pin 3
tension b 378 04 00 0 # camera tension: pin 4
You can actually choose any output pins on the parallel port
that you want. Starting with pin 2 is arbitrary, but recommended
for simplicity.
| © Copyright 1997, Greg Ercolano. All rights reserved. To report documentation errors, send email to |
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