Ethos v1.5.7 and X18, X20 series User Manual
8. How to test a Redundant Receiver setup
It is important to test your model thoroughly before flying, including redundancy.
This test assumes that you have configured a redundant receiver. Please also see Adding a
Redundant Receiver in the RF System section.
A. Real world test
Assuming you have your main receiver on 2.4G and the redundant receiver on 900M, you
can activate Range Test, and simply walk out until the 2.4G stops working (i.e. past the
RSSI Critical alert). The redundant receiver should have taken over at this point.
B. Bench test
Step 1: Confirm normal setup
Assuming you have your main receiver on 2.4G and the redundant receiver on 900M,
confirm that both receivers are bound and green LEDs are on. Check that your
controls are functioning.
Step 2: Bind the main receiver to another Model ID
Create a simple test model (e.g. TestRx) with a different Model ID.
Bind your main receiver to this test model.
Switch back to your model under test. The LED on the main receiver should now be
red, because it is bound to the TestRx model. The LED on the redundant receiver
should be green. Your controls should be functional, proving that the redundant
receiver is working.
Step 3: Rebind the main receiver to its normal Model ID.
With the redundancy testing complete, rebind the main receiver back to its normal
Model ID. Confirm that the green LEDs on both receivers are on again, and check that
your controls are functioning.
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