For Arri standard 24v cables and accessories. This tester tests the continuity and polarity of 24v cables and accessories. It does not test RS functionality (please contact me if you would like this feature in a future version).
A green light indicates cable is working correctly. A red light indicated the polarity is reversed. PROCEED WITH CAUTION. I am not currently aware of any accessories that used reversed 24v polarity. No light or flickering light indicated a bad cable or connection.