Garmin TR-1 manual Tachometer Codes

Table of Setup Codes and Parameters

	TACHOMETER CODES
Description	Code	Values of the Parameters	Factory
			Defaults
RPM Source Configuration	259 1, none/ 2, Port/ 3, Starboard/ 4, Both		2

Code 259: For single engine installations, set this code to 2 (1 blink) (and hook the blue and black wires up to your engine tach leads).

Pulses per Revolution 267 1 to 255 by 1’s 6

Code 267: The number of tach pulses per engine revolution is an engine specific parameter. The following settings are a good starting point, however you need to verify them on operation. V8 engines 4 ppr (3 blinks) Most outboards 6 ppr

Show Port RPM	35	Hold Down [Select Load] button: 1000’s blink on
		Up Arrow 100’s blink on Down Arrow
Show Starboard RPM	36	Same As Above
Transition RPM	348	100 to 6000 by 100’s	3000

Code 348: Set this code to the RPM’s that your boat runs when almost on plane.

Low RPM Limit 357 100 to 6000 by 100’s 500

Code 357: If your autopilot runs well at all RPMs but is a little too active at idle, you can increase this low limit RPM to a setting that is higher than your idle RPM to reduce autopilot rudder activity at idle.

High RPM Limit 359 100 to 6000 by 100’s 6000

Code 359: If your autopilot runs well at all RPM’s but you would like a little stiffer heading hold at the top end, reducing this setting to an RPM lower than your actual peak RPM will help

		HYDRAULIC CODES
Description	Code	Values of the Parameters	Factory
			Defaults
Helm Displacement	269	.1 to 6 by .1’s	1.7
Pump Displacement	169	[Up Arrow] for 4 liter, [Down Arrow] for 2 liter	2 liter
Turns Lock to Lock	26	.1 to 10 by .1’s	4.5
Sloppy Linkage Compensation	257	8 settings, 8 for most sloppy	1

Code 257: In case of sloppy and loose steering linkages, increasing this parameter may help to reduce heading oscillations due to the linkage. Use with caution.

Shadow Drive Desensitize 368 1 most sensitive, 40 least sensitive 20

Code 368: If the shadow drive is being false tripped, i.e., autopilot is disconnected when the helm is held still, increasing this parameter may help. False tripping is usually due to leakage of fluid past the helm pump lock valve. You may need to repair the helm valves if you cannot eliminate false trips.

Shadow Drive Enable	367	[Up Arrow] for On, [Down Arrow] for Off	on
Reversed Hoses	249	[Up Arrow] for Reversed, [Down Arrow] for Normal	Norm

Code 249: In case of hoses installed backwards, use this code to electronically reverse the steering direction.

39