Canon Speedlite 550EX Instructions Manual page 16

16
5. Main Switch
The main switch has three sellings as shown below.
a~
C\IQd)
Turns off the power.
T
ums on the power.
Turn s on the power and enables the SE
mode.
The SE {Save Enargy) mode turns 011 Ihe
Speedlite aulomaticaly afle< a period 01 non·use
as
indicated
in
the
IoIIowing
table.
Wireless Seleclor Selling
OFF MASTER
I
SLAve
9O~.
60
min.
wr.en
the wireless seilldor is sel to
(QW
or MASTER and
the
SE mode takes etflld.
the
LCD
panel display turns off. To cancellhe SE mode,
~ther
pless IhB camera's shutter button halfway
or press the Speedlile's \aslliriog button. The Speedlite wililhen tum on again.
IIlhIt vrirelllss
seIecIor is
set
to
SLAVE
and
the SE mode takes effecl. SE is displayed on the
LCD
pal'lel.
lI the lime
~mit
(1 hour
Of
8 hours) lor turning on the Speedl;18 agail'l (SE
mode
cancellation)
elapses,
SE turns 011 on tile l CO
panel.
In this case, you musl turn the SpeE'(Aite's
main
swilch
011
and on again to
11,111' 1
ij
on again.
- -
Custom Function CF·4 can
alter the time it takes before the
slave unit enters the SE
mode. See page 11 3,
Custom Function CF-5 can aller lhe time limillor Ihe masler un illo be able 10 cance l
Ihe slave unirs SE
mode.
See page 113 .
.:-~:
Memory feature
-'fI-
The
Speedl~e·s
cunenl mode,
lOOI!I
setting,
flash
exposure COrnpensaliOl"l setting, ele.,
are retained in memory even alter the Speedlile
is
turned 011. WIlen the Sped1e is
lurned on again, all the settings remain el1ective. When replacing Ihe balleries. the
settings stored in memory can stit l be retai ned it the
new
batte ries are il1Stalled with in one
mi nute.