ComNav P4 Installation and Operation
Basic Operations
Document PN 29010100 V1r0 - 135 -
Backlight Level
There is a Night mode and a Day mode that have different levels of Backlight adjustment
settings.
For Daylight mode, the level can be adjusted between 5% to 100% while Night mode is
adjustable between 2% to 20%.
Watch Alarm
The P4 has a built-in Watch Alarm. This menu item allows you to turn on the Watch Alarm
and set how much time is allowed to elapse before the alarm goes off. This menu item is
password protected to prevent a unauthorized person from changing the Watch Alarm
parameters. See the
Watch Alarm section of this manual for complete details on setting the Watch Alarm, and the
password.
Fishzag Time
This sets the time interval between course changes while executing the special Fishzag turn.
The units displayed are seconds, and each click of the COURSE CHANGE knob will change
the interval by thirty seconds. See the Fishzag section of this manual for more information.
Battery
This is a read-only display that cannot be changed. The number shown is the battery voltage
as measured at the Signal Processor Unit.
Power Steer Mode
To enter POWER STEER mode, press and hold the P.STR button for approximately half a
second, until the large “P” mode indicator appears in the upper left corner of the display (see
Figure 57).
In this mode, the display shows the actual compass heading and the rudder angle. The
PORT and STARBOARD ARROW buttons are used to control the rudder. Press one or the
other to move the rudder in that direction. The rudder will keep moving for as long as the
button is pressed until it gets to the physical rudder limits.
You can limit the maximum amount of rudder travel in POWER STEER mode by turning on
the Power Steer limits. Turning on these limits, and adjusting them to suit, is done in the
Power Steer menu. The COURSE CHANGE knob can also be used to move the rudder in
POWER STEER mode. Each “click” of the knob will move the rudder a finite yet equal
amount.
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