Raymarine ST4000 Plus, Owner'S Handbook Manual

Page: 28 / 119

Chapter 3: Advanced Operation
15
Chapter 3: Advanced Operation
This chapter provides information on:
ï Operation in Track mode
ï Operation in Vane mode (WindTrim)
ï Adjusting the response level and rudder gain
ï Alarms
3.1 Operation in track mode
Track mode is used to maintain a track between two waypoints created
on a GPS, Decca, or Loran navigation system. The ST4000 Plus will
then compute any course changes to keep your boat on track,
automatically compensating for tidal streams and leeway.
The ST4000 Plus can receive cross track error (the distance your vessel
is from a planned track) from:
(a) A SeaTalk navigation instrument or chartplotter
or
(b) A non-SeaTalk navigation system transmitting data in the
NMEA 0183 format ñ this can be connected directly to the
ST4000 Plus NMEA input, as described in the Installation
Chapter.
Track mode is selected by pressing the
track
key, but can only be
selected from Auto mode. You can return to either Auto or Standby
mode from Track mode, as follows:
ï Press
auto
to leave Track mode and return to Auto mode.
ï Press
standby
to leave Track mode and return to manual steering.
Initiating track mode
When initiating Track mode, the track can be acquired in one of two
ways:
ï Automatic acquisition, when cross track error and bearing to
waypoint data are available
ï Manual acquisition, when cross track error is the only available data