Control Module Operation - David Clark DC PRO-X2 Series Quick Reference Manual

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. Enhanced Auto Shutoff
DC PRO-X2 Series headsets are shipped with the Enhanced Auto Shutoff feature set
to the 'OFF' position. Enhanced Auto Shutoff can be enabled/disabled via a small
switch located under the batteries (see Quick Start diagram page 6).
When Enhanced Auto Shutoff is set to 'OFF' (factory default), ANR headset power is
manually controlled using the Power Button. When Enhanced Auto Shutoff is set to
'ON', at turn-on of the headset using the Power Button, the headset will function
as follows:
A. If the headset is connected to the aircraft audio panel, the headset will
automatically turn off after 5 minutes under the following conditions:
• aircraft audio panel is turned off,
• headset is disconnected from the aircraft panel, or
• an active cell phone conversation is concluded.
B. If the headset is not connected to the aircraft audio panel, headset power is
controlled by the Power Button, allowing continuous use for cell phone
conversation or streaming audio.
5. Cell Phone Interface
• Use of the Bluetooth
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 always present
• Briefly pressing the Bluetooth
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
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C O N T R O L M O D U L E
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