Audio Mixing Amplifier, Non-DC biased referenced loads
Description: The Model 247 is a multipurpose audio mixing amplifier for mixing aural warning, cockpit voice recorder, or any other aircraft audio signals.
Tags: Avionics,Communications,Audio,EACH
SKU: 247
Description
Features
This Model 247 (EDMO# NAT247) is designed for driving non-DC biased (ground referenced) loads.
- Contains 3 independent audio mixing circuits that have four input channels and one output channel each
- Adjustable inputs accept microphone signals, headphone audio signals, or receiver audio signals
- 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)
- TSO-C50c, RTCA/DO-214, RTCA/DO-160C approved
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
TSO-C50c, RTCA/DO-214, RTCA/DO-160C approved