Canon Speedlite 550EX Instructions Manual page 57

5. Master Flash ON/OFF
The master unit's flash firing can be enabled (ON) or disabled (OFF).
(1)
t "i.
( ~.,
[J
n)
This setting enables the master unit to fire a flash.
• This sening
is
cal led "Master Hash ON:
• This setting automatically sets the master unit's slave 10 10 A.
(2) "i. ( ' " 0 F F ) : This selling (Master flash OFF) prevents the master unit
from firing a flash. It can still transmit wireless signals to
trigger the slave units.
1
Press the
<
SElISET > bullon and
select
~ ., .
• Pressing the
0<
SEL / SET,. bu11C," changos
the selection in
the
following loop:
r
mI-+ ~-+ e:mg-+~-+
J"i, "]
_ 1"'1 ....
I -_ ___
...J
2
Press the
<
+
>
or
< - >
button to set
either an or C FF .
3
Press the < SELISET > button.
, ., Of .,
wi.
appear.
• If
mast81
flash
OFF
is
set,
0 =
wiI
bIiok.
IP.l
Even If master flash OFF Is set. the master unit still transmits the wireless signal IQ fire
l...II
the slave units.
57