Canon Speedlite Transmitter ST-E3-RT Manual

14

Turning on the Power

To save battery power, the power will turn off automatically after 5 min. 
of idle use. To turn on the transmitter again, press the camera’s shutter 
button halfway, or press the test flash button (charge lamp).

By setting the power switch to <

a>, you can disable flash’s button 

and dial operations. Use this to prevent the transmitter function settings 
from being accidentally changed after you set them.
If you operate a button or dial, <LOCKED> is displayed on the LCD 
panel (the functions displayed above function buttons 1 to 4, such as 
<

=> and <@>,  are not displayed).

When a button or dial is operated, the LCD panel illuminates in green 
for 12 sec. When setting a function, the illumination continues until the 
setting is complete.
If the transmitter is the master unit in linked shooting, the LCD panel 
illuminates in green. If the transmitter is a slave unit, it illuminates in 
orange.

 

You cannot use the test flash while the camera’s 

3/1/2 timer is 

operating.

 

The transmitter settings are stored even when the power is turned off. To 
retain the settings when replacing the batteries, replace the batteries 
within 1 min. of turning off the power switch and removing the batteries.

 

You can fire a test flash even when the power switch is set to the 
<

a> position. Also, when a button or dial is operated, the LCD panel 

illuminates.

 

You can set a beep to sound when the slave unit is fully charged 
(C.Fn-20/p.57).

 

Auto power off can be disabled (C.Fn-01/p.56).

 

You can change the duration of the LCD panel illumination (C.Fn-22/p.57).

 

You can change the color of the LCD panel illumination (P.Fn-03, 04/p.58).

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