A common question that comes up as a requirement is the ability to support different headsets/helmets on a single audio channel. This can be achieved (when necessary - some headsets will work fine at the same gain level) by changing the software input or output gain of the channel to accommodate headset B over headset A. However, this involves using an RMS webpage and isn't always a practical solution. Is there an easier way to do it via a hardware switch or device?
With the ACENet ACU2 audio device you have the ability to implement a hardware gain selector. This could be a switch selector or a special cable or just an Open vs. Closed circuit detection on the channel of the device. To do this you use the ControlIn3 input on the ACU2 AND you enable 'Alternate Gains’ in the Remote Management System (RMS) Interface for the ACU2. Here is a summary of how it works:
To set this up you'll need to have a switch that connects to ControlIn3 (pins 13 and 14), as you read in the Users Guide. Once you've done that, there's two different ways to implement this.
The first is a simple switch, where the ControlIn is either open or closed
The other way is to implement this feature is with a multi-postion switch, that uses different resistances across the ControlInput.
For more info on the ACU2 in general check out the ACU2 overview page.