Alarms; System; Units; Communications - Garmin GPS 158 Owner's Manual

System

Beeper: Sets when the beeper sounds�
Speed Filter: Sets the speed filter�
Language: Sets the system language�
System Information: Displays the Unit ID and other information�

Units

Position Format: Sets the position values to the selected format�
Map Datum: Sets the map datum to the selected format�
Heading: Sets the heading value to the selected format�
Distance, Speed and elevation: Sets the values to the selected format�
Depth: Sets the depth values to the selected format�

Communications

Sets the serial data format and transfer mode� Contact your Garmin authorized
dealer to use transfer mode, which is for software updates�
NMeA Out Sentences
®
GPRMC, GPRMB, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD, GPBWC, GPVTG,
GPXTE, PGRME, PGRMZ, PGRMM, GPRTE, GPWPL, GPAPB
NMeA In Sentences
DPT, DBT, MTW, VHW, WPL
8

Alarms

System
Clock: Sets an alarm to sound at a specified time of day�
Power: Sets an alarm to sound when the voltage is below the voltage entered�
DGPS: Sets an alarm to sound when the device is using DGPS�
Accuracy: Sets an alarm to sound when the GPS accuracy drops below the
specified threshold�
Navigation
Anchor Drag: Sets an alarm to sound when your vessel drifts farther than the
specified distance while at anchor�
Arrival: Sets an alarm to sound when you arrive at your destination�
Off Course: Sets an alarm to sound when your boat is farther off course than the
specified distance�
GPS 158 Owner's Manual