Instruction manual

Table Of Contents
Installation
22083083K 75
I
NSTALLATION
A
utotrim
W
ORK: ON
Transition Speed
INSTALLATION
Transition
speed: 00 kn
The transition speed is the speed where the AP35 will automatically change
the steering parameter set from the HI speed to LO speed parameters, or vice
versa.
The default setting of transition speed is zero, which requires that steering
parameter selection be done manually. If a GPS, Loran, or external speed log
input (from IS15 or other instrument systems) is connected, it is
recommended to set the transition speed to a value greater than 0, to enable
the automatic speed selection feature in the AP35.
It is recommended that you set the transition speed to a speed that represents
the speed where the hull begins to plane, or where you would manually
change the parameters from HI to LO.
The speed used for the automatic transition is obtained as follows:
1. Data from the source set in the interface setup for the INSTR channel. If
this is a valid source of VHW (speed through the water) data, then this
data is used for determination of when to change parameter sets.
2. If VHW data is not available from the INSTR channel or if the INSTR
channel is not cond, the AP35 system will use the speed data obtained
from the VTG (speed over ground) sentence received from the currently
selected POS source.
If no speed data is available on either the INSTR channel (VHW) or the POS
source (VTG), manual speed selection is required. The AP35 will always
default to the HI speed steering parameters when the system is first turned
on, and with speed data failure.
If manual speed selection occurs (the user manually selects HI or LO
parameters), the manual parameter set will remain in effect until the AUTO
mode is re-selected.
Rotate the course dial clockwise until the transition speed is set to the
desired value in knots.
Proceed to next menu item by pressing STBD [>] button.
Autotrim WORK
The Autotrim parameter can be
permanently switched off in the WORK
mode. If the Autotrim is set to ON, it is
automatically switched off when the speed
is below 2 kts. (Ref. page
21). Rotate the
course dial to select between ON and OFF.
Proceed to next menu item by pressing STBD [>] button.