4.2 S UPERVISOR C OMMUNICATIONS The audio path for the signals from the supervisor headset is Headset to 1/4” Jack to Audio Module PCB to the audio outputs. Signals are routed within the unscrambler to the audio module PCB’s where the signals are amplified depending on the position of the volume controls. The supervisor microphone output is routed to the diver earphone terminals on the top plate and the speaker if supervisor round robin is switched on. The supervisor will only be heard by the divers when the individual channels PTT or the All Divers” PTT button is pressed while not on supervisor round robin. When supervisor round robin is active the supervisors microphone output will be open and live to all channels until the round robin switch is switched off. The supervisor to diver volume can be adjusted for each channel individually via the channel’s volume control or the volume of all channels to the supervisor can be adjusted using the master volume control.