Page 1: ...DigiVOX Digital Intercom INSTALLATION AND OPERATION MANUAL REV 4 10 October 13 2004 Northern Airborne Technology Ltd 1925 Kirschner Road Kelowna BC Canada V1Y 4N7 Telephone 250 763 2232 Facsimile 250...
Page 2: ...eriodically NAT will release manual amendments In order to maintain the most accurate and up to date manual these amendments should be carried out immediately upon receipt and recorded on the followin...
Page 3: ...oduction 2 1 2 2 Unpacking and Inspection 2 1 2 2 1 Warranty 2 1 2 3 Installation Procedures 2 2 2 3 1 Warnings 2 2 2 3 2 Cautions 2 2 2 3 3 Notes 2 2 2 3 4 Cabling and Wiring 2 3 2 3 5 Installation O...
Page 4: ...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...
Page 5: ...cal Specifications Power Supply Description Multiple switches and linear regulators with reverse and over voltage protection Short circuit protected by internal fuse Normal operating conditions Nom Op...
Page 6: ...keyline output Rated Level Phones output 100mW 7 7 Vrms into 600 TX mic output 250 mV rms nominal into 150 Circuitry Type All outputs are single ended Freq Resp Phones output Receive input 3 dB from...
Page 7: ...etween the faceplate and chassis Aircraft panel thickness 0 050 to 0 125 The DA80 is mount compatible with the AA80 001 Material Finish Brushed aluminum with chromate conversion Connectors One 25 pin...
Page 8: ...gating Bi color LED ICS volume and VOX Squelch controls Live VOX and AutoVOX Intercom modes DA80 010 4 place operation Music muted during ICS and radio operations Individual mic gating Bi color LED I...
Page 9: ...od Warranty Card Operators Manual Release certification Verify that all items are present before proceeding and report any shortage immediately to your supplier 2 2 1 Warranty Complete the warranty ca...
Page 10: ...e the microphone and headphone jacks are isolated from the airframe ground Use caution when routing microphone wiring as it carries low level signals prone to coupling from other sources Do not take a...
Page 11: ...the model of the unit under consideration Each pigtail should be no more than 3 0 long Bring the pigtails through the rubber grommet and strip off 0 5 of insulation Bend the stripped portion back onto...
Page 12: ...d in the aircraft it may be desirable to change some of these settings to best suit the local operating environment The internal adjustments are located along the left side of the unit and are as foll...
Page 13: ...l required mounting holes in the aircraft panel and insert the DA80 from behind the panel e Attach the black metal faceplate with label attached from the front with the countersunk holes facing out Se...
Page 14: ...hums or other background audio are symptomatic of multiple grounds or noisy external systems such as blowers or pumps sharing wiring with the audio system Failure to key or correctly modulate a transm...
Page 15: ...housing 20 21 025 25 MS Crimp Socket 20 26 901 1 Hood D min Metal 20 28 028 2 6 Installation Drawings DRAWING REV DESCRIPTION TYPE Serial s DA80 001 DA80 001 403 0 1 00 Digital Intercom Interconnect...
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Page 24: ...PILOT ISO VOLUME ICS VOX SQUELCH AUTO PTT DA80 VOX Digi MAX MIN...
Page 25: ...ve functions for up to two passengers Music is available at all positions The crew and passengers share a common VOX control and one volume control sets the ICS volume in all four headsets The DA80 is...
Page 26: ...djusting aircraft radios as low radio volume may affect the DA80 mute functions 3 3 3 VOX SQUELCH Control The DA80 VOX SQUELCH control is a rotary control that is used to set the level of audio requir...
Page 27: ...e microphone will automatically set the VOX threshold 3 3 4 TX ICS Indicator The TX ICS indicator is a dual color LED which will illuminate green during radio transmit operations and amber during ICS...
Page 28: ...any crew member Keys the radio Music will also mute whenever aircraft radio audio is present or if the ICS is active 3 4 2 2 PILOT ISO In PILOT ISO mode copilot and passenger music audio will not mut...
