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The AMS50 is a full function audio panel with
built-in Marker Beacon receiver, 6 place stereo intercom featuring
ALL, CREW, and PILOT ISO modes, plus true "split com" operation.
Front panel controls feature soft touch push-button switching
for quick and precise selection of transmitters and receivers.
System Flexibility and Expansion: The
AMS50 can be expanded using various combinations of NAT products
resulting in the system flexibility to support the most demanding
GA and corporate audio system requirements. A two-panel cockpit
configuration is available allowing both pilots the ability
to control their own panels. This allows for independent selection
of the transmitters, independent VOX circuits, pilot isolation,
and crew modes. These TSO’d panels in combination satisfy the
high workload multi-crew IFR environment.
System Expansion Products:
AA38-300 and AA38-301 local ICS expansion units = 8 to 16 mono
passenger headsets per aircraft.
AA85 InterVOX II™ TSO = 6 high quality monaural
headset positions with two independent VOX controls, ICS volume
and music volume.
AA82 InterMUSIC™ = 6 passenger stereo headset
positions featuring music volume, ICS volume and VOX control.
Transmit Select with True Split: Two mic
select push-buttons allow each pilot to independently select
any transmitter; "COM 1, COM 2, COM 3 or PA". One of four LED
indicators above each push-button is illuminated to indicate
the transmitter selected. "Auto" receive function will correspond
to each selection. Pilot selection of transmitters can also
be made via remote yoke mounted momentary switch. Com 3 can
be configured as a telephone interface for full duplex operation.
Speaker: The "SPKR" push-button allows
all selected audio to be switched to a cockpit speaker (4 ohm)
through an internal amplifier. An LED above the push-button
is illuminated to indicate that the speaker is on. Audio to
the headset always remains on and cannot be defeated.
Direct Inputs: Accommodation for two (2)
direct unswitched inputs for functions such as Rad Alt, GPS
alerts, Telephone Ringer, etc.
Push-to-Talk ICS: This feature, when configured
during installation, will allow the pilot/co-pilot and passengers
the ability to use remote push-to-talk switches for specialty
environments that make communication with VOX impractical.
Pilot / Crew / All Modes: The AMS50 intercom
features three operating modes. The default ALL mode permits
everyone on the system to talk to each other, listen to music,
and hear all radio communications. In the CREW mode, the pilot
and co-pilot are isolated from the passengers. Both the crew
and passengers retain full intercom and music capabilities within
their group while the passengers are prevented from hearing
any radio communications. The crew’s music level is automatically
set to the preset muted level while the passengers music muting
remains as normal. PILOT ISOLATE mode separates the pilot from
the intercom network, allowing confidential radio communications
without interference from the passenger intercom or music. In
this mode the pilot maintains complete control of the AMS50
audio panel radio functions while the co-pilot is completely
removed and placed with the passengers.
Independent Microphone Circuits (Gating):
Wind, engine and other fatigue noises are significantly reduced
within the intercom system through NAT’s patented independent
microphone circuits. By "turning on" only the active microphone,
internal communications are quieter and less stressful.
ANF™: The AMS50 system utilizes NAT’s system
of Active Noise Filtering (ANF™). This advanced technology better
isolates the human voice while filtering out unwanted ambient
noise entering the intercom channel. Clear, clean intercom communications
result for a more comfortable and safe flight.
Stereo Music: The AMS50 accepts stereo
music inputs from portable entertainment units, CD changers
and other integrated on-board systems. The stereo output delivers
high quality music to stereo general aviation headsets with
a frequency response of 50 Hz to 15 kHz.
Adjustable Music Mute Level: A field adjustable
setting provides adjustment control of music mute level. This
allows the flexibility to customize the music muted level from
30% to 100%.
Marker Beacon: A built-in Marker Beacon
receiver with a three light display and HI/LO sensitivity selection.
Fail-safe: Emergency fail-safe operation
is a feature in the event of a power failure. The audio panel
is automatically by-passed and the pilot is routed directly
to the number one radio. Manual fail-safe operation is activated
by turning the volume control counter-clockwise until it clicks
to the OFF position.
Technical
Specifications
Mechanical Dimensions: 1.3” H x 6.7” D x 6.25” W
Weight 1.75 lb.
Inputs:
Power 11-33 VDC
Operating Current 2.0 A max. @ 27.5 VDC
3.0 A max. @ 13.8 VDC
Microphones 6 @ 250 mVrms max., 150 ohms
Music Stereo
Radio (com) 3 @ 510 ohms, 2.5 Vrms
(nav) 5 @ 510 ohms, 2.5 Vrms
(direct) 2 @ 510 ohms, 2.5 Vrms
Keylines 2, pilot and co-pilot
Outputs:
Headphones 6 stereo @ 150 ohms 40 mW (nom.), 75 mW (max.)
Freq. response (radio) 350 - 6000 Hz
(intercom) 350 - 3000 Hz
(music) 50 - 15 kHz
Distortion < 2% @ 75 mW
Environmental:
Temperature (Operating) -20 C to +55 C; (Survival) -55 C to
+ 85 C
Altitude 50,000 ft
Humidity 95%
Shock 6g, 15g
Marker Beacon:
Frequency 75 MHz
Input impedance 50 ohms
Sensitivity (Lo) 1000 uV; (High) 200 uV
Selectivity 6 dB (min.) @ ± 10 kHz; 40 dB (max.) @ ± 200 kHz
External Lamps Active Lo 125 mA max. sink current
Patents: Mic Gating, Music Muting US Patent #4,941,187
Install Kit: Crimp kit included
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