Northern Airborne Technology AMS50 - Manual (Page 23)

SM50 Rev. 4.00 AMS50-000 Stereo Audio Panel with Marker Manual
2.3.5.5 Insert a 3/32” Allen wrench through the hole in the front panel and turn
clockwise until the unit is secure in the mounting tray. DO NOT OVER-
TIGHTEN.
Note: Manufacturing coatings may cause the locking rod to be a tight fit in
the nut at the rear of the tray. Apply moderate force to overcome any
resistance.
2.3.5.6 To remove the AMS50, turn the locking rod counterclockwise until the unit
disengages from the mounting rack. If the unit is a tight mechanical fit, it may
be necessary to pull the unit forwards as the locking rod is unscrewed.
2.3.6 Installation Options and Features
It is important to establish which options and features are required at the time of
installation.
2.3.6.1 Telephone or Cell Phone Interlock (Field Selectable)
COM3 can be configured at installation as a telephone interlock. With the PHONE SEL
pins (<12> and ) jumpered at connector P101, the keyline is automatically keyed
with COM3 mic selection (i.e. there is no need for a separate PTT action). The mic is
automatically connected to COM3 mic output, and in ‘non-split’ mode, both the Pilot’s
and Co-pilot’s mics are active. If the ringer audio is provided on a separate line to the
phone audio, consider using the AUX Rx input or a direct audio input.
If the telephone system that is being interfaced does not meet these specifications, an
adapter is required i.e. AA34-300.
2.3.6.2 Option Select
The AMS50 is supplied with one external input (P101 pin <14>) to control firmware
related functions. The AMS50-000 is configured to use this input for Music Mute defeat.
When activated by a hard or switched ground, the music does not mute in the CREW
and ALL mode, allowing both music and intercom simultaneously (‘karaoke’). In PLT
ISO the music is always muted for the Pilot only. When the remote switch is not
activated, the normal muting scenarios are followed.
Nov 12, 2003 Page 2-5
ENG-FORM: 805-0104.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.