2ST4000 Plus Wheel & Tiller Autopilots Owner’s Handbook
ïDockside rudder calibration feature, which automatically
determines the characteristics of your installation, and adjusts for
them, before you set sail
ïRaytheon CodeLock security support
1.2 Ext ended systems
The ST4000 Plus is compatible with other Raytheon SeaTalk
instruments. Additional fixed and hand-held SeaTalk autopilot control
units can be connected at secondary steering and control positions.
A rudder reference unit can be fitted as an optional extra, and will
improve the wheel pilotís performance. It is especially recommended if
there is significant backlash in the steering system, or optimum
performance is required from a mechanical or cable steering system.
Note: You MUST fit a rudder reference if the ST4000 Plus is installed
on a hydraulic steering system.
1.3 Specification
ïPower Supply: 10 to 15†V dc
ïDrive mechanism: Wheel or Tiller, low current FET drive
ïCurrent consumption:
Standby: 60†mA (less than 200†mA with full lighting)
Auto: between 0.5†A and 1.5†A depending on drive type, boat trim,
helm load and sailing conditions
ïOperating temperature: 0∞C to +70∞C (32∞F to 158∞F)
ïEight button illuminated digital keypad
ïLCD display of heading, locked course and navigational data, with
three levels of illumination
ïInput connections for SeaTalk, power, fluxgate compass, rudder
reference unit and NMEA
ïOutput connections for SeaTalk and motor drive
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