Si-text trawl plot 12, User Manual, Page: 79 / 118

81 User Manual
Turns On/Off the Speed Filter. When it is On, you can filter the speed of the
ship, to optimize it. The default setting is Off.
5.3.2.7Bearing
'MENU' + "ADVANCED" + 'ENTER' + "FIX & COMPASS" + 'ENTER' + "Bearing"
+ 'ENTER'
Selects either degrees magnetic, Auto Mag, or True. If magnetic readings are
selected the variation is computed automatically for every zone as soon as the chart is
displayed. The default setting is Auto Mag.
5.3.2.8Magnetic Variation
'MENU' + "ADVANCED" + 'ENTER' + "FIX & COMPASS" + 'ENTER' +
"Magnetic Variation" + 'ENTER'
It is possible to calculate the Magnetic Variation in an Automatic or manual
mode, by inserting the step for calculation of Magnetic Variation. The default set-
ting is Automatic.
5.3.2.9Calibrate Compass
'MENU' + "ADVANCED" + 'ENTER' + "FIX & COMPASS" + 'ENTER' +
"CALIBRATE COMPASS" + 'ENTER'
The variation table is used to match magnetic value readout on the chartplotter
comparable with the value given by the compass of the boat. In other words, since
the compass of the boat must be compensated (due to the iron masses, ...), we use the
same values given by the chartplotter. This means that, for example, if the BRG to
the next Waypoint readout in the chartplotter display is "X" Mag degree, if you steer
the boat reading "X" Mag degree from the compass, you are driving well toward the
next Waypoint.
5.3.3 SIMULATION MENU
'MENU' + "ADVANCED" + 'ENTER' + "SIMULATION MODE" + 'ENTER'
The built-in Simulator function allows you to become proficient in the use
of the chartplotter. No current position fix is required because the chartplotter simu-
lates position data internally.
5.3.3.1Speed
'MENU' + "ADVANCED" + 'ENTER' + "SIMULATION MODE" + 'ENTER' +
"Speed" + 'ENTER'
To start the simulator you can insert the Speed value. Using the Joystick select
the preferred Speed and press 'ENTER'. The default setting is 01.0 Kts.