Simrad AP26 Manual De Usuario

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Simrad AP26 and AP27 Autopilots 
102
 
20221586B
 
Depth Offset 
Note ! 
This adjustment only applies to “smart” depth transducers that 
outputs depth on NMEA2000 format. NMEA0183 sentence 
‘DPT’ contains offset and the depth reading is from the surface. 
NMEA0183 sentence ‘DBT’ contains no depth offset and the 
reading will be from the position of the transducer.  
When the depth offset is set to 
zero, the indicated depth is 
from the transducer to the 
bottom.  
To read the depth from the water surface to the bottom you have 
to set the depth offset according to the vertical distance between 
the surface and the transducer, i.e. positive (+) value. If you want 
to indicate the depth from the keel to the bottom you have to set 
the depth offset according to the vertical distance between the 
transducer and the keel, i.e. negative (–) value. 
Automatic tuning 
Automatic tuning is a feature that automatically sets the two 
main steering parameters (Rudder and Counter Rudder) by 
taking the boat through a number of S-turns. The scaling factors 
of the parameters are also set automatically as a function of the 
boat type selection performed in the Dockside menu.  
Automatic tuning is an optional procedure that is not required for 
the autopilot to function. The autopilot is preset with steering 
parameters that should steer most boats in the 30 - 80 foot range. 
It is, however, recommended to perform an automatic turning as 
part of the sea trial. 
Recommended speed during Automatic tuning varies with the 
type of boat, but should not exceed 10 knots.  
Note ! 
Automatic tuning should not be performed at planing speed!  
For displacement boats use a speed that is approximately half the 
normal cruising speed (i.e. if cruising speed is 10 knots, perform 
the Automatic tuning at about 5 knots). 
The parameter values calculated during Automatic tuning 
becomes the HI parameters. The LO parameters are 
automatically set to 66% of the HI.