Lowrance lms-522c igps 操作指南

103 

something. The GPS will work fine for these lessons right out of the box 

with the factory default settings. But, if you want to learn about the vari-
ous options, see Sec. 8, System Setup and GPS Setup Options. 
You can access the Main Menu from any of the four Page screens by 

pressing 

|

. To clear the menu screen and return to the page 

display, press 

. 

 

The Main Menu commands and their functions are: 
Screen: changes the contrast or brightness of the display screen. 
Sounds: enables or disables the sounds for key strokes and alarms and 

sets the alarm style. 
Transparency: adjusts the level of transparency for menus. 
Alarms: turns GPS or sonar alarms on or off and changes alarm 

thresholds. 
Route Planning: used to plan, view or navigate a route. 
My Trails: shows, hides, creates and deletes plot trails. Also used to 

navigate or backtrack a trail. 
Cancel Navigation: turns off the various navigation commands. Used 

to stop navigating after you have reached your destination waypoint, 

Point of Interest or map cursor location; or after you reach the end of a 

route or trail. 
Sonar Setup: sets various sonar options. 
GPS Setup: sets various GPS receiver options. 
System Setup: sets general configuration options. 
NMEA 2000: provides access to all NMEA 2000 network setup options, 

including the configuration of devices on the network. For more infor-

mation, see Section 10: NMEA 2000 Menu.