Godox TT685C User Manual page 17

Using Automatic Wireless Flash with a Single Slave Unit
1、Master Unit Setting
● Attach a TT685C camera flash on the camera and set it as the master Unit.
● As a master unit, TT685C can control Canon speedlites e.g. 580EXII, 600EX-RT via
wireless.
2、Slave Unit Setting
● Set the other camera flash as the wireless slave unit.
● As a slave unit, TT685C can receive wireless signals of Canon speedlites e.g. 580EXII,
600EX-RT and commanders of Canon cameras e.g. 7D/60D/600D.
3、Check the communication channel.
● If the master unit and slave unit(s) are set to a different channel, set them to the same
channel.
4、Position the camera and flashes.
● Position the camera and flashes as the picture shows.
5、Set the master unit's flash mode to <ETTL>.
● Set the master unit's flash mode to <ETTL>.
● For shooting, <ETTL> will automatically be set for the slave unit.
● Set the master unit flash firing as ON to fire a flash.
6、 Check that the flash is ready.
● Check that the master flash ready indicator is lightened.
● When the slave flash ready indicator is ready, the AF-assist beam lighting area will blinks
at 1 second intervals.
7、 Check the flash operation.
● Press the master unit's Test Button <
● Then, the slave unit will fire. If not, adjust the slave unit's angle toward the master unit and
>。