I "suppose" that the words
Quote:
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External power sources of any type are not permitted on any equipment connected to the Joystick Ports.
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mean that if your device connects to the Joystick Ports, it cannot get power from anything other than the Joystick Ports. The words "isolation" and "electrical connection" are not present in the rule.
However, what I "suppose" is not relevant. If you want an official answer, submit an official question. Which I see you're planning to do, which is good. Now we can
all find out the correct answer.