G-PILOT 3100 Operation Manual NAVMAN 11heading:To display MAG (magnetic) or TRUE headings,go to HDG TYPE in the OPTIONS menu (seesection 3-7).3-3 Bar data displayThe bar data at the top of the display can displayrudder angle or course error.To select what is displayed, go to BAR DATA inthe MAIN menu (see section 3-7). The optionsare RUD (rudder angle) or CE (course error). Ifthe G-PILOT 3100 system has more than onedisplay unit, then the bar data display can beselected differently in each display unit.Rudder angleRudder angle is the angle that the rudder isturned from amidships. When the G-PILOT3100 is driving the rudder, an arrowhead atthe end of the bar data turns on, pointing in the3 OperationHeadingTrue ormagneticheadingIn STBY (standby), course error displaysas zero.3-4 Info data displayThe info data is at the bottom of the screen,and can display one item of steering ornavigation data. To select what data isdisplayed, go to INFO DATA in the MAINmenu (see section 3-7). If the G-PILOT 3100system has more than one display unit, then theinfo data display can be selected differently ineach display unit.The options are:CTS: The course the G-PILOT 3100intends the boat to steer; in STBY(standby) there is no CTS and the displayshows CTS — — —.3-1 Set backlight for screen andkeysTo adjust the backlight, go to LAMP in the MAINmenu (see section 3-7). The options are OFFor 1 (least bright) to 4 (most bright).3-2 Heading displayThe main display always shows the boatG-PILOT driving rudder toport, rudder is at 12° to portG-PILOT is not driving rudder,rudder is at 18° to port,If the rudder is turned 30° or more, the displayshows 30° and the arrowhead is on:G-PILOT is not driving rudder,rudder is amidshipsdirection the rudder is moving. For example:Rudder angle can be displayed even if the boatis being steered manually.Course errorThe course error is the angle between theactual boat heading and the intended autopilotcourse, for example:Actual heading 90°CTS (course to steer) 110°Course error is 20° to starboardActual heading 290°CTS 250°Course error is 40° to port, but 30° isthe largest error that can be displayed,so the display shows 30° to port