Northern Airborne Technology ACP51-100 - Manual (Page 27)

ACP51-100 DACS Audio Control Panel
SM81 Installation and Operation Manual
Section 3 Rev: 1.00 Issue 1 Page 3-6
ENG-FORM: 806-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
3.3.13 Transmit Features
Note: Confirm the specific criteria associated with this installation with your installing agency.
Various features may be configured through the audio management unit during installation. Typical
examples are given below.
3.3.13.1 User Priority
The DACS is designed so that if a user has keyed a specific transceiver, no other user can access that
transceiver for the duration of the transmission.
3.3.13.2 Transmit Time-Out
The DACS has a stuck microphone (transmit key-line shorted to ground) timeout feature. After thirty to
one hundred and twenty seconds (adjustable at installation), the transmit key input signal is overridden,
the selected radio will stop transmitting, and the transmit indicator on the user’s Audio Control Panel will
no longer be displayed. The timer is reset once the transmit key-line is no longer grounded.
At installation, this feature may be disabled.
3.3.14 Back-up and Emergency Modes
When the communications management system is operating in Back-up or Emergency mode, the ACP51
and all associated headsets are disabled.
Any appropriate installed external indicator(s) will illuminate to warn users that emergency (or back-up)
mode has been activated.
Section 3 ends