Model 247 Audio Mixing Amplifier | DC-biased Microphone Compatible

Model 247 Audio Mixing Amplifier | DC-biased Microphone Compatible

CANYON AEROCONNECT

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EDMO # NAT247-001
MFR Part # 247-001
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Product Description

The Model 247 is a multipurpose audio mixing amplifier for mixing aural warning, cockpit voice recorder, or any other aircraft audio signals. Each input is adjustable to accept 0.25 VRMS microphone signals, headphone audio signals from standard audio systems, or receiver audio signal up to 50 mW. The outputs are designed to drive any impedance from 8 to 10K. Additional inputs can be added by connecting one of the outputs to feed an input of another mixer.

Features

  • This Model 247 (EDMO# NAT247-001) includes bi-polar output capacitors for compatibility with DC biased microphone inputs to other equipment.
  • Bi-polar output capacitors for compatibility with DC biased loads
  • Adjustable inputs accept microphone signals, headphone audio signals, or receiver audio signals
  • Contains 3 electrically independent audio mixing circuits
  • 4 input channels and 1 output channel per circuit
  • Capable of driving a headset
  • TSO-C50c, RTCA/DO-214, RTCA/DO-160C approved

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Specifications

  • Weight:
    0.6 kg (0.42 lb)
  • Dimensions:
    41.40 x 76.96 x 76.96 mm (1.63 x 3.03 x 3.03 in)
  • Power Supply:
    28 VDC @ 150mA, maximum (each circuit)
  • Input Impedance:
    600Ω, (15KΩ with gnd/bias jumper removed)
  • Output Impedance:
    100Ω
  • Frequency Response:
    flat within ±3dB from 300 to 6,000 Hz
  • Distortion:
    <1% THD+N
  • Gain Range:
    >12dB
  • Output:
    4.5 Vrms (33mW) into 600Ω, current limited outputs
  • Mic Bias:
    18 VDC @ 30mA, individually selectable
  • Enclosure:
    conversion coated aluminum
  • Mounting:
    bulkhead mount: four #8 screws
  • Temperature:
    -55°C to 70°C
  • Altitude:
    -15,000 to 70,000 ft
  • Specification
    TSO-C50c, RTCA/DO-214, RTCA/DO-160C approved

Related Products

Product Codes

  • Mfr Part No
    247-001
  • ECCN
    7A994
  • SCHEDULE B CODE
    8518.40.2000
  • TSO
    C50c

Documentation

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