ComNav Commander P2 - Adjust Rudder Gain, Counter Rudder, Turn Rate and Seastate for lo Speed; Adjust Seastate for Hi Speed; Adjust Speed Trip Point; Adjust Turn Rate for Hi Speed

ComNav Commander P2 & P2VS Installation & Operation Setting Up
Document PN 29010074 V4.1 - 105 -
Adjust Turn Rate for Hi Speed
1) Adjust the Turn Rate setting to the full comfortable rate (per step 6), above).
2) In AUTO mode, make a few course changes of 20° or more, to ensure that the rate of
turn is indeed comfortable at normal cruising speed; if it is not, reduce the Turn Rate
setting until it is.
Adjust Seastate for Hi Speed
To set Seastate, switch to AUTO mode, and then watch the Port & Starboard rudder
movement arrows at the ends of the screen’s RAI bar.
In normal conditions, there should be rudder movement about 15% to 20% of the time.
If the autopilot is over-active, increase Seastate until the arrows blink less often. If the
autopilot is under-active, decrease Seastate.
Adjust Rudder Gain, Counter Rudder, Turn Rate and Seastate for Lo Speed
1) Adjust boat speed to what will be your lowest normal “low speed” – that is, the lowest
speed at which you will ever want to use the autopilot. For most boats, a good speed to
do the “low speed” adjustments is at or below the maximum speed in a Speed Control
Zone or “no wash” area – usually 5 Knots.
2) Bring up the Auto menu, highlight “Parameter Set” and select “Lo”.
3) Repeat steps 3) though 13) in the Hi speed Rudder Gain & Counter Rudder adjustment
process above (the starting value to use for Lo speed Rudder Gain is the factory-default
of 8).
4) Adjust the Lo speed Turn Rate setting to suit. Make a few Course changes of 40° or
more to ensure that the rate of turn is comfortable.
5) Adjust the Lo speed Seastate setting to suit.
Adjust Speed Trip Point
1) Bring up the Auto menu, and set the Trip Point speed to something mid-way between the
speeds used for setting the Hi & Lo speed parameters in the steps above. This should
be a speed you will never travel at for any length of time – for example, in a planing-hull
boat, it would be a speed just a little bit less than where the hull starts to get up on the
step.
2) Bring up the Auto menu, highlight “Parameter Set” and select “Auto”.
3) In AUTO mode, change the boat speed back & forth between the Lo & Hi speeds you will
normally use. The boat should continue to maintain a straight Track along the Heading
you are on, and you should see that the display’s Parameter Set indicator (see page
Figure 82 on page 126) changes back & forth between “L Auto” & “H Auto” as you
change speeds.