Spektrum DX6i. Rates & Expo.

...how to set up rates & expo

The DX6i has programmable Dual Rates as well as Expo, features not found on the DX5e and other basic transmitters.

D/R Expo is on the Adjust List, just under model select. Clicking on this takes you to the D/R Rxpo setup page, where the middle column is the Rates i.e. the servo travel percentage, and the right hand column is the Expo, which is set to INH (inhibit) by default. 

Clicking on one of the INH values and then scrolling will change this to a percentage value; the higher the more damping around the centre of the stick.

Dual rates allows you to set the travel of each control individually, and there is a switch for each as well to enable you to selectively change control travel e.g. setting elevator to "high" while leaving aileron and rudder on "low".

Clicking on a percentage in the first column will allow you to adjust the Rates, or servo travel, individually for each control. The actual amount will depend of how much response you require or how sensitive you plane is.

It's worth researching this before your first flight, as super-sensitive controls (aileron especially and also elevator) can be disastrous...