D Oz
Member
My theater recently purchased a used Rosco Model 1750 Fog Machine for immediate use. I briefly tested it upon arrival, to make sure that it was responding to DMX. I then put it in its perch for the production, making sure to put a DMX terminator in (as the manual demands).
During the preshow check, however, the fogger did not respond to DMX control. After several troubleshooting steps, I removed the terminator, and the device started responding to DMX signal again.
Now, I figured the terminator might have caused the jankiness, since it's a 3-pin terminator and I had to put it on an adapter to connect to the fogger's 5-pin DMX out port. But testing continuity showed that both adapter and terminator are wired correctly. (The only wrinkle is that the terminator has a 110-ohm resistor - as opposed to the standard 120 - but it has worked fine in the past.)
I didn't have a chance to test the DMX out of the fogger, so I can't speculate on its role in this mystery.
Have you had a problem like this in the past? I'd appreciate your insight.
During the preshow check, however, the fogger did not respond to DMX control. After several troubleshooting steps, I removed the terminator, and the device started responding to DMX signal again.
Now, I figured the terminator might have caused the jankiness, since it's a 3-pin terminator and I had to put it on an adapter to connect to the fogger's 5-pin DMX out port. But testing continuity showed that both adapter and terminator are wired correctly. (The only wrinkle is that the terminator has a 110-ohm resistor - as opposed to the standard 120 - but it has worked fine in the past.)
I didn't have a chance to test the DMX out of the fogger, so I can't speculate on its role in this mystery.
Have you had a problem like this in the past? I'd appreciate your insight.