Raymarine autopilot ST4000+ Specifications download pdf (Page 126)

Chapter 7: Customizing the ST4000+ 111

7 Customizing the ST4000+

AutoAdapt (AUTOADAPT)

The patented AutoAdapt feature allows the ST4000+ to compensate

for heading errors at higher latitudes, which are caused by the

increasing dip of the earth’s magnetic field.

The increased dip has the effect of amplifying rudder response on

northerly headings in the northern hemisphere, and on southerly

headings in the southern hemisphere.

1. Set AutoAdapt to:

•

nth (north) in the northern hemisphere

•

Sth (south) in the southern hemisphere

2. You then need to enter your current latitude in the next setup

screen (

LATITUDE), so that the ST4000+ can provide accurate

course keeping by automatically adjusting the rudder gain

depending on the heading.

Latitude (LATITUDE)

The ST4000+ only displays this screen if you have set AutoAdapt to

nth or Sth.

Use the

-1 and +1 keys to set the value to your boat’s current latitude,

to the nearest degree.

Note: If valid latitude data is available via SeaTalk or NMEA, the

ST4000+ will use this data instead of the calibration value.

D3263-2

North

without

compensation

North

with

compensation

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Raymarine autopilot ST4000+ Specifications Page 126