Post Installation Test
14 AR6201 Retrofit-Instructions Issue 01 November 2016
4. Post Installation Test
• Power up the AR6201, after self-test procedure the display shows the software status of
the unit.
• Carry out the "Configuration Setup”, to check and/or set the correct microphone type,
ports, etc.
For details about "Installation Setup” please refer to I&O manual:
http://www.becker-avionics.com/downloads/
→ AR620X Family
Note: It is assumed that the "Configuration Setup" has been done before the Post Installation
Tests will be carried out.
Once the 620X is installed, complete a test procedure to verify system functionality. Ensure
compliance with authority required procedures. Refer to the installation order of the minor change
document or use an own approved test protocol for VHF units. The following chapter provides
guidance for such tests.
4.1.1. Mechanical Installation and Wiring Check
• Verify all cables are fixed securely and shields connected properly to signal ground.
• Check the movement of aircraft controls to verify there is no interference.
• Verify all screws are tight and the connectors on the rear side of the unit are secured.
4.1.2. Power Supply
• Check the power supply lines and confirm correct polarity.
• Confirm that the aircraft power supply is within the specified limits, with and without a
running engine.
4.1.3. Receiver / Transmitter Operation
• Power up the 620X and tune it to a local station for a communication test.
• Verify that the receiver output produces a clear and readable audio and ask the local
station for proper readability for the transmit signal of the 620X.
• Repeat this communication test with an airborne station within ≈ 20-40 NM (Nautical
Miles).
4.1.4. Antenna Check
• Check the VSWR (voltage standing wave ratio) over the complete frequency band (e.g. by
using a VHF Reflection-Coefficient Meter).
The VSWR ratio should be less than 2:1 and is not acceptable when exceeding 3:1.
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