ST40 Compass Instrument - quick reference guide
Normal operation
SWITCH ON
Compass heading
Locked
heading
Course computer
sets auto lock
Times out to the
Compass heading
screen after 5 seconds.
Off course
alarm
values
Course computer
sets auto lock
Alarm on/off
3seconds
Momentary
Auto locked
heading
+
Set
alarm
level
-
With Set alarm level screen displayed,
press the
and 
keys simultaneously
to save the alarm level and return to
normal operation.
Adjusting display backlighting/contrast
To enter adjust mode, press 
for 1 second to adjust BACKLIGHTING and a further 1 second to adjust CONTRAST
OFF 
LEVEL 1
LEVEL 2 
LEVEL 3
LEVEL 2 
LEVEL 1
To exit adjust mode press 
or
or wait for 5 second timeout
