Rudder Ratio
(Proportional Gain)
Factory default setting is 3 and
should only be altered during
sea trials
• With Main Screen displayed
(Figure 8)
• Hold MODE button, Settings
Page 1 will appear (Figure 9)
• Press AUTO to edit RUDDER
RATIO
• Press ► to increase setting
(larger rudder ratio)
• Press ◄ to decrease setting
(smaller rudder ratio)
• Press MODE to return to
Settings Page 1
• Press MODE to return to
Main Screen
Rudder Sensitivity
(Rudder Tolerance)
Factory default setting is 4 and
should only be altered during
sea trials
• With Main Screen displayed
(Figure 8)
• Hold MODE button, Settings
Page 1 will appear (Figure 9)
• Press ► to scroll down to
RUDDER SENSE
• Press AUTO to edit
RUDDER SENSE
• Press ► to increase setting
(more tolerance to the rudder
position error)
• Press ◄ to decrease setting
(less tolerance to the rudder
position error)
• Press MODE to return to
Settings Page 1
• Press MODE to return to
Main Screen
Error Gain
(Integral Control Gain)
Factory default setting is 5 and
should only be altered during
sea trials
• With Main Screen displayed
(Figure 8)
• Hold MODE button, Settings
Page 1 will appear (Figure 9)
• Press ► to scroll down to
ERROR GAIN
• Press AUTO to edit ERROR GAIN
SI-TEX SP-110C 13 of 35
Note: Increasing the Rudder
Sensitivity too high can cause
vessel wandering
Note: A value of 1 signifies the
minimum amount of applied rudder.
When the rudder setting is too
low, vessel track will be slow i.e.:
understeer due to too little rudder
applied. A value of 20 signifies
the maximum amount of applied
rudder. When the rudder setting is
too high, vessel track will be rapid
i.e.: oversteer due to too much
rudder applied.
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