Garmin GHP 12 Autopilot System Installation Instructions Manual page 26

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Category
Autopilot Tuning > Rudder
Gains
(power boat only)
Autopilot Tuning
Navigation Setup
Navigation Setup > NMEA
Setup
Navigation Setup > NMEA
Setup
Navigation Setup
Navigation Setup
Steering System Setup
Steering System Setup
Steering System Setup
Steering System Setup >
Drive Unit Class > Other or
Solenoid
Steering System Setup >
Drive Unit Class > Solenoid
Steering System Setup >
Drive Unit Class > Other
26
Setting
Description
High Speed Counter Allows you to set the rudder gain counter-correction for high speeds.
This setting applies to the vessel when operating above planing speed.
If you set this value too high, the autopilot may be overactive, attempting to constantly adjust
the heading at the slightest deviation. An overactive autopilot can cause excess wear and
tear on the drive unit
Acceleration Limiter
Allows you to limit the speed of autopilot-controlled turns.
Increase the percentage to limit the turn rate, and decrease the percentage to allow higher
turn rates.
Fine Heading
Allows you to set the lubber line (heading offset) for the autopilot.
Adjustment
NMEA Checksum
If the connected NMEA 0183 GPS unit incorrectly calculates checksums, you may still be
able to use it if you turn this setting off. When set to off, data integrity is compromised.
Reversed XTE
If the connected NMEA 0183 GPS unit sends the incorrect steering direction with the cross
track error signal, use this setting to correct the steering direction.
Navigation Gain
Allows you to adjust how aggressively the autopilot eliminates cross-track error while
following a Route-To pattern.
If this value is too high, the autopilot can oscillate back and forth across the course line over
long distances.
If this value is too low, then the autopilot may respond slowly in eliminating cross-track error.
Navigation Trim
Allows you to adjust the acceptable amount of long term cross-track error while following a
Gain
Route-To pattern. Only adjust this setting after the navigation gain has been set.
If this value is too high, the autopilot will overcompensate for cross-track error.
If this value is too low, the autopilot will allow a large long term cross-track error.
Shadow Drive
This setting lets the system know if a Shadow Drive (optional) is connected or not.
Connected
Verify Steering
This setting tells the autopilot which direction the rudder must move to turn the vessel to port
Direction
and to starboard. You can test and reverse the steering direction if necessary.
Drive Unit Class
Allows you to specify the class of your drive unit (refer to
information).
Select Other for non-Garmin drive units.
Drive Unit Voltage or
Only applicable if the Drive Unit Class has been set to "Other" or "Solenoid".
Solenoid Voltage
This setting tells the autopilot the voltage it should supply to the drive unit motor. Refer to the
documentation supplied by the manufacturer of your drive unit to determine motor voltage
specification.
An incorrect setting can cause damage to your drive unit motor.
Bypass Valve Voltage Only applicable if the Drive Unit Class has been set to "Solenoid".
This setting tells the autopilot the voltage it should supply to the solenoid bypass valve. Refer
to the documentation supplied by the manufacturer of your solenoid drive to determine the
bypass-valve-voltage specification.
An incorrect setting can cause damage to your solenoid drive.
Max. Current
Only applicable if the Drive Unit Class has been set to "Other".
Threshold
This setting tells the autopilot the maximum amount of current it can supply to the drive unit
motor.
Refer to the documentation supplied by the manufacturer of your drive unit to determine motor
current specification.
An incorrect setting can cause damage to your drive unit motor.
(page
18).
(page
www.garmin.com
for more
GHP 12 Installation Instructions
6)

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