Canon Speedlite 600EX-RT Instruction Manual - Page 55

Wireless Settings Setting the Transmission Channel/Wireless Radio ID of the Master Unit and Slave Unit Use the following procedure to set the transmission channels and wireless radio IDs of the master unit and slave unit. Set the same channel and ID for both the master unit and slave unit. The procedure is the same for the master unit and slave unit. 1 Set the display. Press function button 4 to display . 2 Set a channel. Press function button 1 . Turn to select "AUTO" or a channel from Ch. 1 to 15, and press the button. 3 Set a wireless radio ID. Press function button 2 . Turn to select the position (digit) to set, and press the button. Turn to select a number from 0 to 9, and press the button. Repeat step 3 to set a 4-digit number. Press function button 4 to return to the shooting-ready state. X When transmission between the master unit and slave unit is established, the lamp is lit in green. 53