Garmin TR-1 Table of Setup Codes and Values of the Parameters, Navigation Function Codes, Factory

Table of Setup Codes and Values of the Parameters

Description		Code			Values of the Parameters		Factory
							Defaults
Step Turns (Degrees per Step		6		10	Choices/ 1.2.3.4.5.10.15.30,45,90 Degrees		15
Circle Time		7		10	Choices/ 1.2.3.4.5.10.15.30,45,90 Minutes		5
Zig-Zag Amplitude (Degree of Turn)		8		10	Choices/5 to 50 degrees by 5’s		30
Zig-Zag Period (Length)		9		20	Choices 1/2 to 10 minutes by 1/2’s		1.5
MOB Overshoot		14		1 Most overshoot command. 40 most undershoot			10
Clover Leaf Length		28		500 to 6,000ft by 100ft increments			1,000
Search Spacing		25		50 to 1,000ft by 50 ft increments			50
		NAVIGATION FUNCTION CODES
Description	Code				Values of the Parameters		Factory
							Defaults
Navigation Gain	15		1 lowest gain, 73 highest gain			50
Navigation Trim Gain	16		1 lowest gain, 73 highest gain			49

Code 15 & 16: Most GPS systems only send cross track error across the NMEA 0183 data bus with .01 mile (60 feet) resolution. Unfortunately, they display cross track error to the nearest foot. What this means is, don’t expect the autopilot to zero the cross track error because the information it has is-that any crosstrack error less than 60 ft. (as seen on the GPS display) is zero feet. Adjust parameter 15 up until the boat oscillates back and forth near the course line, then back it down a few clicks. Increase parameter 16 until you can see that standoff from the course line decreases over time.

Use Magnetic North	17	[Up Arrow] for Mag [Down Arrow] for True Heading	MAG
Set North	48	In [Standby] Press and hold GPS [Select Load]- if Up Arrow
		LED lights, point boat north-then press and release DM
Use Synthetic XTE	167	[Up Arrow] for on, [Down Arrow] for off	On

Code 167: On some GPS’ this code may result in tighter tracking near waypoints.

Use NMEA Checksum 347 [Up Arrow] for on, [Down Arrow] for off On

Code 347: If your GPS calculates checksums wrong, you may still be able to use it with this code turned off. Data integrity is compromised in this condition.

Use Reversed XTE 18 [Up Arrow] for on, [Down Arrow] for off Off

Code 18: Some GPS’ send the wrong direction to steer with the crosstrack error signal. Use this code to fix this problem.

Use GPS 1 GPS 2 34 [Up Arrow] for 2, [Down Arrow] for 1 1

Code 34: This code switches between the two sources of NMEA navigation data used by the autopilot to steer with.

Update rate for HDG out 49 0 (off) to 10 HZ Update Rate 10 HZ

Code 49: With this code at the bottom of its range (Down Arrow LED on) the autopilot does not transmit $APHDG. With any settings other than off, the data is transmitted at a rate equal to (1-code 49 setting) HZ. up to a maximum rate of 10 Hz.

Fine Heading Adjust

168

[Up Arrow] increase heading out .1 deg. [Down Arrow] decreases heading out .1 deg. Note: Very Slow response to buttons.

33