Derek has covered the issue already, but I have some peeves.
"This past summer i worked a show and the
dimmer chosen by the LD was an
ETC Sensor 98"
One of the things that will separate you from the lesser folks is going to be your ability to get the specifics of the gear correct, especially if describing it on a forum dedicated to the technical entertaiment industry. It's a Sensor 96, not 98. It's the most common dimming system, probably in the world.
It has multiple dimmer"s", plural, that's why it's called a 96. Not Dimmer, singular.
As Derek has mentioned, and hopefully this is something you will retain, as well as a thanks for taking the time to bring it up, as it's one of those things everyone learns and forgets to pass along, is that Sensor dimmers get knocked out of contact in shipment. This is something every roadie and
house electrician is aware of and has learned the hard way, and the very first thing I do on a touring rack, prior to connecting ANY cables, is open the door and re-seat the dimmer modules. Plural.
Sorry if I sound cranky, I am.
Steve B.