Northern Airborne Technology AMS50 - Manual (Page 14)

AMS50-000 Stereo Audio Panel Manual SM50 Rev. 4.00
1.4 Specifications
1.4.1 Electrical Specifications
Power Supply
Input voltage: 11-33 Vdc @ 3.0 A max. (one input for both)
Note: For emergency voltages below 11 Vdc, the
Manual Fail-safe mode must be used.
Internal supply: ± 8 Vdc for ICS and music to phones,
+ 12 Vdc for speaker and front panel lighting
+ 5 Vdc for logic circuitry
Nominal Lighting Voltage: 27.5 Vdc @ 10 mA max
two separate inputs
13.8 Vdc @ 10 mA max
Input Signals
Microphone: 6 inputs, 250 mVrms into 150 Ω (Fixed)
Receive Audio: 3 COM inputs , 5 NAV inputs. (COM3
configurable for use with aviation phone).
2.5 Vrms into 510 Ω (Fixed)
RX detection: 50 mVrms min
Sidetone Level: 2 mW (1 Vrms) min into 510 Ω
Keylines: Two TX keys (Pilot and Co-pilot).
Music input: Stereo input, switchable between portable
cassette/CD player or rack mounted CD player.
Portable Cassette or CD: 400 mVrms (Nominal) into 610 Ω
250 mVrms to 700 mVrms
Rack mounted CD Player: 2.5 Vrms (Nominal) into 3.5 k Ω
1.0 Vrms to 4.5 Vrms
Output Signals
Headphones: 6 stereo outputs, at full volume, > 70 mW into 300 Ω,
< 10% THD each side. (> 100 mW into 150 Ω).
ICS Volume Range: 40 ± 5 dB
Radio Audio Adjustments: Controlled at each radio source.
Speaker: Adjustable: 0-7 W into 4 Ω @ 27.5 Vdc supply
0-3.5 W into 4 Ω @ 13.8 Vdc supply
COM MIC 3 outputs @ 250 mVrms into 150 Ω each,
controlled by either PLT or CPLT.
PA MIC 1 output @ 250 mVrms into 150 Ω, controlled
by either PLT or CPLT.
Page 1-2 Nov 12, 2003
ENG-FORM: 800-0106.DOT
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