Si-tex SP38, Installation And Operation Manual, Page: 147 / 193

Sitex SP38 Installation and Operation Advanced Operations
Document PN 29010101 V1r0
- 147 -
Alternate Navigation Display
An alternative display is available for NAV mode. To access this display, enter NAV mode by
pressing the NAV button until the letter “N” appears in the upper left portion of the display.
Release the button, and then press the NAV button again. The display will change to a
“highway” representation as shown below:
Figure 68 – Typical NAV Mode Screen (Alternate Display)
To change back to the normal display, press the NAV button again.
In the alternate NAV display, cross-track error is shown graphically by the boat icon being
located to the left or right of the centerline. The position is proportional to the amount of
cross-track error. Note the small numbers in the lower corners of the highway display. These
indicate the scale of the display. There are four scales that can be shown on the highway
display: 0.2, 0.5, 1.5, and 3.0 nautical miles. The scale changes automatically to give the
best resolution.
Dodge
When in AUTO, NAV, WORK or modes, you can use the PORT and/or STARBOARD
ARROW buttons to avoid (“dodge around”) an obstacle in the water.
Pressing and maintaining either the PORT ARROW button or STARBOARD ARROW button
will cause the SP38 to turn the vessel in that direction.
As long as one of the buttons is pressed, the rudder will keep moving in the corresponding
direction.
•
If one or both of the Power Steer Rudder Limits and/or the Auto/NAV Limits are set, then
the autopilot will stop moving the rudder when it gets to the lesser of the limits.
•
If neither of the Rudder Limits are set, then the autopilot will stop moving the rudder when
it gets within a few degrees of the physical limits of rudder travel.