C O N T R O L M O D U L E
8
WWW.DAVIDCLARK.COM
Control Module Operation
1. Fail Safe - if batteries are dead or the unit is turned off, microphone
and earphones will function when connected to aircraft intercom.
2. The DC PRO-X headset is shipped with the Auto Shutoff feature OFF.
In this mode, the Hybrid ENC will function whenever the power is ON.
3. When Auto Shutoff is set to ON, unit will turn off automatically after 5
minutes when:
• Intercom/audio panel turned off
• Not connected to intercom/audio panel
• Not in a phone call
4. Auto shutoff can be enabled/disabled via a small switch located under
the batteries (see Quick Start diagram page 6).
5. Cell Phone Interface
• Use of the Bluetooth
®
wireless technology cell phone feature while
plugged into aircraft intercom is not recommended and may violate
applicable regulations
• All intercom parties hear cell phone outbound audio but cell phone
recipient’s voice is heard only by the headset connected/paired to the
cell phone
• Sidetone is present when connected to aircraft intercom. Sidetone may
not be (dependent on cell phone functionality) present when using the
headset and cell phone when not attached to the aircraft intercom
• Briefly pressing the Bluetooth
®
wireless technology button will answer
or terminate a call (if supported by the cell phone)
• Cell phone receive audio is not muted when receiving a transmission from
ATC or intercom
