Operation Manual

References
181
850-165186 / Rev.B
Transducer port: Enter which transceiver port (output) the
transducer is connected to; Echo1 or Echo2. With the predefined
transducer types, the ports are also set by the software.
Transducer beam angle: Enter the fore-and-aft and
athwartships beam angles for the transducer. With the
predefined transducer types, this information is already known.
Transducer depth: Enter the vertical distance between the
transducer face and the water surface. Normally, this value can
be fixed, but if it changes considerably when the vessel is
loaded, you may need to change it. The value is used to provide
you with a correct depth under keel (DK) value in the echo
sounder presentation.
Echo sounder parameters
Keel depth below surface: Enter the distance between the keel
and the water surface. Normally, this value can be fixed, but if it
changes considerably when the vessel is loaded, you may need
to change it. This parameter is used to provide you with the
correct depth below keel value in the echo sounder presentation.
Data on NMEA-out from: Choose if the echo sounder data
output on the NMEA interface shall be taken from the 38 kHz,
50 kHz or 200 kHz echo sounder frequency.
Alarm for fish, strength: This parameter enables the fish
detection alarm, and adjusts the sensitivity (strength). With high
sensitivity, smaller f ish (with weaker echoes) will trigger the
alarm.
DepthDSfish:This parameter allows you to define a vertical
depth area (between a maximum and a minimum depth) in
which the fish alarm can be triggered. Echoes outside the chosen
area will not trigger the alarm.
Depth DK alarm (minimum and maximum values): This
parameter enables an alarm to sound off if the water depth under
the keel is shallower or deeper than two predefined limits.
Water profile: This parameter sets up the echo sounder for
operation in fresh or salt water.
Velocity of sound in water: This parameter allows you to fine
tune the performance of the PI54 echo sounder to the speed of
sound in the water. However, in most cases, the accurate speed
is not known, and this parameter is not important at all when
operating in shallow waters. For all practical purposes, leave
this setting to the default value of 1470 m/s.
Time scale: This parameter allows you to switch t he time scale
in the echo sounder presentation on or off.