Jupiter Avionics JA37-300, Installation And Operating Manual

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JA37-300 Aural Message Generator - 3 Channel - Analog Inputs
Installation and Operating Manual
Rev B Page 2
1.3.2 Outputs
Name Qty Type
CONFIG DATA FROM JA37-300 1 Data signal
GROUND 3 Ground
PHONES HI/LO 2 Audio signal
LOW ISOLATION HI/LO 2 Audio signal
HIGH ISOLATION HI/LO 2 Audio signal (configurable via ProCS)
MESSAGE ACTIVE 1 Control signal active low
1.4 Specifications
1.4.1 Electrical Specifications
Power Input
Primary nominal voltage 28 Vdc
Secondary nominal voltage 14 Vdc
Maximum voltage 30.3 Vdc
Minimum voltage 11.0 Vdc
Emergency voltage 9.0 Vdc
Input current 0.5 A max
1.4.1.1 Audio Performance
Rated Input Level
RX audio rated input level 7.75 Vrms ± 10 %
Message Analog Triggers:
Thermocouple rated input level 100 mVdc ± 1 %
0-5 VDC Pressure Transducer rated input level 5 Vdc ± 1 %
0-100 mVDC Pressure Transducer rated input level 100 mVdc ± 1 %
Tachometer rated input level (min) 0.2 Vrms ± 10 %
Tachometer rated input level (max) 22 Vrms ± 10 %
Rated Output Level
Phones rated output power into 600 Ohm 7.75 Vrms ± 10 %
Phones low isolation rated output power into 600 Ohm 3.87 Vrms ± 10 %
Phones high isolation rated output power into 600 Ohm 1.94 Vrms ± 10 %
Audio Frequency Response
Phones output audio frequency response ≤ 3 dB from 300 to 6000 Hz
Distortion Characteristics
Phones audio output distortion at rated power ≤ 10 %
Phones audio output distortion at 10% of rated power ≤ 3 %
Input Impedance
Receive Audio input Impedance 1000
Ω ±
10%
Message Analog Triggers:
Thermocouple differential impedance ≥ 500 k Ω
Thermocouple impedance ≥ 200 k
Ω
Pressure transducer differential impedance ≥ 100 k Ω
Pressure transducer impedance ≥ 200 k Ω
Tachometer differential impedance ≥ 100 k Ω
Tachometer impedance ≥ 200 k Ω