Becker Designed AR 3201 operation manual Precautions

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AR 3201 - ( )

3.11Precautions

In order to secure a reliable transceiver operation, please note the following precautions:

a)Before running-up the engines, ensure that the transceiver is switched off.

b)Always conduct a verbal pre-flight check. Note that in the vicinity of a flight control, a broken or shorted antenna cable must not necessarily impair the function. At a distance of 5-10 km from the ground station, however, the connection will doubtlessly fail.

c)Transceiver communication contact should always be conducted using a clear, loud voice and by speaking directly into the microphone. Otherwise, cabin background noise could predominate, making the message inaudible.

d)Use suitable microphones or headset for aircraft only. With certain aircraft types (wood orfibre-glass aircraft, gliders and helicopters) the signals transmitted by the unit’s antenna may be picked up and enhanced by the integrated microphone amplifier (feed back). As a result, the signal received by the flight control will be superimposed by whistles and/or strong distortion. This phenomenon may not necessarily remain constant for all channels.

e)The PTT button of the microphone or control unit might jam, causing the system to remain in the transmission mode. In order to rule such cases out, please ensure that the arrow in the frequency display (from serial no. 4000 onwards) illuminates during the transmission mode, and extinguishes when the PTT button is released.

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DV 28110.03/04 Issue 02/92

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Contents VHF Transceiver Installation and Operation R S T I S S U E a N D C H a N G E S Table of contents Blank Introduction Purpose of equipmentGeneral description Variants survey Transceiver AR Channel Deg Celsius FahrenheitSpecifications General data Transceiver Receiver specificationsTransmitter specifications Accessories Optional functionsCertification Scope of delivery SoftwareInstallation Blank Pre-instailation check General Mechanical installation of a temperature sensorGeneral Visual inspectionInstallation wiring General Microphone connectionIC connection Speaker/headphones connectionView showing components side of audio module Panel lightingAuxiliary audio input optional standard as of module No Auxiliary audio inputDimensions of VHF transceiver Aircraft wiring Wiring diagram AR 3201 with Speaker Junction Testing after installation Ground testing with engine OFF Ground testing with engine onSection Operating Instructions Blank Control and Indicators Section Operating InstructionsPage Operating instructions for serial no to serial no Operating instructions serial no upwardsStoring frequencies IC operation Optional temperature, voltage measurementLC display blinking No channel frequency storagePrecautions