** If only the XTE information is
available from your GPS unit then
your vessel must be on track, and
heading in the correct direction,
before engaging the GPS unit.
The “auto sequence” feature is not
available in this instance.
SP-110C Alarms
A number of conditions will cause
alarms to sound and an alarm
message to flash on the display
Off Course Alarm
In AUTO mode an audible alarm of 3
“beeps” per second will sound when
boat heading is greater than 45º from
the desired course. A red message
will also be displayed on the screen
GPS Alarm
In GPS steering mode an audible
alarm of 1 “beep” per second will
sound when no GPS data is received
by the SP-110C. A red message will
also be displayed on the screen.
Compass Alarm
If there is no reading from a compass,
or no HDM / HDT data incoming, an
audible alarm of 1 “beep” per half-
second will sound. A red message will
also be displayed on the screen.
Low Speed Alarm
When used without a rudder
feedback (RFU), if the vessel speed
goes below the low speed threshold
set in the settings, an audible alarm
of 1 “beep” per second will sound.
A red message will also be displayed
on the screen.
Definition of Terms
SP-110C Display: The
operational control unit with colour
display and push buttons.
Heading: This is the magnetic
direction of the vessel at the
current time.
Course-to-steer: The direction
(heading) which the autopilot is
attempting to maintain.
SI-TEX SP-110C 31 of 35
Note: Prior to engaging GPS
mode, a route or destination must
be programmed and selected in
the GPS for the Autopilot to follow.
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