Sitex SP38 Autopilot, Installation And Operation Manual

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Sitex SP38 Installation and Operation Basic Operation
Document PN 29010101 V2r0
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Compass Source
There are a number of separate inputs for the many different types of compasses that may
be used with the SP38 (N2000, Analog, Nav1 and Nav2) system. You may choose to have
more than one type connected at any given time. This menu item allows you to switch from
one to another whenever the operator chooses.
The selected input can be the same one used for the Navigation data source and/or the
Speed source.
The next table summarizes all available input ports in
SP38 SPU.
Source Available port options
Menu to change the
port
Accessed through
when SP38 is in
command
Compass Source NMEA 2000, Analog
compass port (fluxgate
and magnetic), NAV1,
NAV2
SPU User menu Double click STBD
button
Speed Nmea 2000, NAV1,
NAV2
SPU AUTO menu Double click AUTO
button
Navigation Nmea 2000, NAV1,
NAV2
SPU NAV menu Double click NAV
button
Position
Table 2 - SPU Available Input Ports
Compass Cal - Compass Calibration
This feature allows you to synchronize the compass on the autopilot with an external source.
Simply turn the COURSE CHANGE knob until the Compass Cal value reads the same as
your reference source.
NOTE : For safety reasons, Compass Cal may not be adjusted in
AUTO
or
NAV
modes,
so it does not appear if the Standby menu is entered in one of those modes.
NMEA Hdg Type
If you use N MEA 2000, NAV1 or NAV2 for your heading source, you have the option to select
True or Magnetic as your heading reference. This is useful if your NMEA 0183 device output
both HDT and HDM, and you want to use the magnetic heading. If you select Auto, the
autopilot will select the heading reference based on its internal priority order described
below.
For NAV1 or NAV2, heading may come from HDG, HDT, or HDM in high to low priority order.
For NMEA 2000 PGN 127250, the True or Magnetic reference type is used.
Battery
This is a read-only display that cannot be changed. The number shown is the battery voltage
as measured at the Signal Processor Unit.