The ASP-004-1 Audio Selector Panel allows the integration of commercial and aircraft radio equipment into one aircraft audio system.
The ASP-004-1 has a single, 4 position, switch selectable, mic / audio / PTT for the transceiver in use. It also provides 4 switch selectable transceiver audio outputs, all passive resistively isolated from each other. This allows the user to monitor up to 4 transceivers audio comms simultaneously.
Each of the 4 audio output channels is resistively ‘summed’ together to present a single mixed audio output to the user. A standard set of ‘summing resistors’ is fitted to the unit. These may be adjusted during the installation to supply the correct resistive isolated audio level from the radios in the aircraft allowing a wide variety of units to be used, from standard VHF air radios through to CB UHF style units.
NOTE: The use of non-aircraft radios in the installation, will require the use of an AVT Commercial Radio Interface (CRI) to match the impedances of the commercial radio to that of an aircraft standard. The CRI also supplies the MIC bias required.
Features+ -
- All transceiver inputs are resistively isolated.
- Passive operation. DC requirements of 5V or 28V only required for panel backlighting.
- 4 position switch, single microphone input with PTT, provided for transceiver in active use.
- 4 switched Com audio inputs, user selectable.
Specifications+ -
Physical Environmental
Height: 47.6 mm (1.87 inches) Temperature: -40 to +50 degrees Celsius
Depth: 101 mm (4 inches) Behind panel Altitude: 15,000 ft max.
Width: 85.6mm (3.3 inches) Humidity: 95% non-condensing
Weight: 210 gms (7.41 oz)
Electrical
Voltage: +28 VDC or 5VDC (customer selectable at purchase)
Current: 500mA @ 5V with full bright lights
125mA @ 28V with full bright lights
Interface Audio Output
Level: Preset with 220 Ohm resistors. Level as per transceiver via summing resistor
Impedance: >50 Ohm plus 220ohm in series
Microphone Output
Level: As per microphone used
Impedance: As per microphone used
Frequency Range: As per microphone used
