Garmin 190-01219-00 Using the Communications Tab, True, Grid, Dpth, Temp, User Mag, Var, Dst, Spd, &, Alt

		Settings
	• Heading—selects the reference used in calculating heading	From any Main page, press Menu twice and highlight Com.
	information.	• Garmin Data Transfer—supports the input or output of
	◦ Auto Mag Var—automatically sets the magnetic declination	Garmin-proprietary data for communicating with Garmin
	for your location.	software such as MapSource®. There are eleven Transfer
	◦ True—sets true north as the heading reference.	Modes to choose from: Host, Request Almanac, Request
	◦ True—sets true north as the heading reference.	Proximity, Request Routes, Request Tracks, Request
	◦ Grid—sets grid north as the heading reference (000º).	Waypoints, Send Almanac, Send Proximity, Send Routes,
	◦ User Mag Var—allows you to set the magnetic variation	Send Tracks, and Send Waypoints.
		• Other DGPS (differential GPS)—(input only) provides
	value.	• Other DGPS (differential GPS)—(input only) provides
• Dst, Spd, & Alt—defines the units of measure for distance,		interfacing capabilities for 3rd party DGPS receivers.
		• RTCM In/NMEA Out—allows DGPS input using a standard
	speed, and altitude in nautical, statute, or metric formats.
		RTCM format, and also provides NMEA 0183 version 2.3
• Dpth—defines the units of measure for depth.		RTCM format, and also provides NMEA 0183 version 2.3
• Dpth—defines the units of measure for depth.		output.
• Temp—defines the units of measure for temperature.		• NMEA In/NMEA Out—supports the input and output of
Using the Communications Tab		standard NMEA 0183 data, and provides sonar NMEA input
Using the Communications Tab		support for the DPT, MTW, and VHW sentences (when
The Communications tab allows you to set the input/output format		support for the DPT, MTW, and VHW sentences (when
		connected to a sonar transducer).
used when connecting your unit to other devices, such as NMEA		connected to a sonar transducer).
		• None—provides no interfacing capabilities.
0183 devices, a PC, or another GPS 152H.		• None—provides no interfacing capabilities.
0183 devices, a PC, or another GPS 152H.		• Garmin DGPS—used to connect the GPS 152H with a
		• Garmin DGPS—used to connect the GPS 152H with a
		Garmin DGPS beacon receiver.
		When Garmin DGPS is selected, additional fields are provided to
		control a differential beacon receiver directly from your GPS 152H.
		You can set the unit to automatically scan for the DGPS beacon
		signal or you can enter the beacon frequency and bit rate.

GPS 152H Owner’s Manual