Hello,
I am not sure how to assist you with the Chauvet fixture but you have to make sure you know what channel mode you have it on. The Operator is a 16 channel controller so if you are using the left side of the controller and have it set to the correct address corresponding with the correct scanner number, the sliders should be able to control it. Please email me if you are still confused, JoelChen@americandj.com, Thanks.