Northern Airborne Technology DA80 - Manual (Page 4)

SM57 Rev. 4.10 DA80 Series DigiVOX™ Digital Intercom Manual
Section 1 Description
1.1 Introduction
This section contains information on the DA80 Series DigiVOX™ Digital Intercoms.
Throughout this section the unit will be referred to as the DA80, and information
provided will be common to all models unless noted otherwise.
Information in this section consists of purpose of equipment, features and specifications,
and unit nomenclature.
1.2 Purpose of Equipment
The DA80-001 is a voice-activated Digital Intercom system. It provides full transmit and
intercom capabilities for the pilot and copilot, plus intercom functions for up to two
passengers.
The DA80-010 Digital Intercom provides full radio and intercom capabilities for the pilot
and copilot, plus intercom and radio receive functions for up to two passengers. Music is
available at all positions. The crew and passengers share a common VOX control.
One volume control sets the ICS volume in all four headsets.
1.3 Features
The DA80 is designed to be backward-compatible with the AA80-001 to allow simple
upgrades to existing installations. It can be mounted either vertically or horizontally.
The DA80 accepts stereo music input from a portable or fixed entertainment system to
produce high quality mono-headset output. ICS mute is automatic during radio
transmission. Music is fully muted during any audible radio or ICS operation and
gradually (within 0.5 to 1.5 seconds) returns after that operation. The priority
transmission feature allows the pilot to override the copilot.
Front panel features include VOX SQUELCH and ICS VOLUME controls plus a toggle
switch for emergency operating (PILOT ISO) mode. Both modes have voice
annunciation. In the emergency mode (PILOT ISO) the pilot is separated from the co-
pilot and passengers and the radio audio is removed from all other headsets.
When AutoVOX™ mode is selected, the squelch is automatically set by the processor
and depends on the ambient noise in the aircraft. The transmit keylines are monitored
for stuck mic condition and the processor will announce a message after 30 seconds of
continuous transmission. For the DA80-001, this mode is selected when the VOX
SQUELCH knob is set to the fully clockwise position, and for the DA80-010, it is
selected when the VOX SQUELCH knob is set to the fully counterclockwise (ccw)
position.
Oct 13, 2004 Page 1-1
ENG-FORM: 800-0107.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.