Table of Contents
...
More follows in the manual. One thing SG is not sure of is how the ground wire from the external power supply gets connected?
...
Pin Designations from the Galil Manual (page 97):
...
This diagram shows how the source select shutters were originally wired up during software development.
Despite This was before SG noticed the 12V limit for the Galils, but despite the 5V source this system actually worked and Will wrote the software for this configuration and pins.
Note how each shutter is on a separate bank (was a ‘might as well separate them' choice , since at this time these shutters where the only things attached to this Galil. The thought was that we might as well separate them just in case there is any cross-talk (although that fear was not based on any facts).
Also note how here the 5V source was used to supply power to both the shutter and the Digital Out Banks. The shutter datasheet shows that they can be powered from 5-12V, so in the wiring diagram above they are now being powered from 12V. This keeps the power draw on the 12V side of the voltage dividers, with only signals on the 5V side of the voltage dividers.
...
Appendix - H&K Galil Test Setup
...