• Receiver no (choices are 00 to 63): defines the behavior of the receiver lock function. This number is sent to the receiver, which will only respond to the number it was bound to. By default this is the number of the model’s slot when it is created. It can however be changed manually, and will not change if a model is moved or copied. If manual setting or a copy/move operation results in 2 or more models on the radio having the same number, a warning popup will show up. It is then up to the user to determine if this is the desired behavior or not and change if required.  For the class example we use 05, the slot position we chose earlier.

[Bind], [Range]:  Bind and range check fields get activated by a press of the ENTER key. The radio will beep every few seconds to confirm. Follow Rx instructions for binding your Tx and Rx and/or follow these video instructions from Scott Page (here).  For our class example with X8R receiver:

• • • +/- to navigate to Bind; press ENT to activate [Bind flashes to confirm Bind mode]
    • depress/hold recessed F/S switch on Rx and apply power to Rx (use any channel for power) paying attention to voltage polarity marked on Rx
    • Binding is confirmed by flashing LED on Rx.
    • Release F/S switch, remove power to Rx, exit the Bind mode or turn off Tx.  Voila, your Rx is bound to the Tx.  Check it out by turning on your Taranis and power up the Rx as normal — a solid green LED confirms the successful bind.  the RSSI signal shown on the Tx.  We’ll check servo action later.  
  • Range check will display a popup with the RSSI value to evaluate how reception quality is behaving.  Note:  RSSI values may be overloaded and show loss of signal if Tx and Rx are too close together.  We’ll use Range Check at the field.  
• Failsafe Mode — (D16 / LR12 Rx modes only): Choices are Hold, Custom, No Pulses, and Receiver.  Note that individual servos may respond differently to a given Fail Safe mode, so be sure to test performance especially.

Hold — Holds the last received positions,

Custom — Allows each control channel to be set to a predetermined +/- percent of full travel in the “Set” field. Select the desired channel, press ENTER to get into edit mode, move the control to the desired position, and press ENTER to save.

No Pulses — This duplicates older style radio fail safe designs where no signal is sent to the servo.  Typically the servo would stop at its last position but would not be able to resist forces attempting to change that position.

The “Receiver” choice is a new feature in OpenTX 2.0.x and is set according to the receiver’s manual.  For the X8R receiver, power up the Tx and Rx, put the sticks and other Inputs in the desired position upon loss of signal, press the F/S button on the X8R until the green LED blinks, and you’re done.  Test by moving the controls, turning off the Tx, and see if the controls move to the intended Fail Safe positions.

The default mode is Hold, and that is our class example selection.  

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