15
FISH450 Tricolor FISHFINDER
Installation and Operation Manual
NAVMAN
Use
Keel Offset
either when the transducer is located below the water surface but
Water surface
Depth of transducer
Enter
positive
values to display depth as measured from a point
above
the transducer (e.g. Water surface).
Enter
negative
values to display depth as measured from a point
below
the transducer (e.g. keel).
Negative value
Transducer
Note: Boat illustrated uses a through hull transducer
location of the depth transducer
and the point the displayed depth
is measured from.
Press the
Cursor Up
or
Down
key
to highlight
Keel Offset
, then press
the
Cursor Right
key to select it.
Press the
Cursor Left
and
Right
key to change the value, then press
the
Menu
key to save and exit.
Access the
Depth
menu through the
Setup
menu screen.
Units
Pressing the
Cursor Right
key when
Units
is highlighted cycles through the options: M
(metres) FT (feet) or FA (fathoms).
Keel Offset
Keel Offset
is the distance between the
4-3 Depth
4-4 Temperature
4-5 Speed and Log
Access the
Temperature
menu through the
Setup
menu screen.
Units
Press the
Cursor Right
key when
Units
is highlighted
to switch between °C (Celsius) and °F (Fahrenheit).
Temp Cal
The temperature readout may be calibrated.
Calibration requires accurate measurement of the
water temperature at the same point as the Aquaducer
(or through hull speed/temperature transducer).
Press the
Cursor Up
or
Down
key to highlight
Temp
Cal
, then press the
Cursor Right
key to select it.
This will display the FISH450 Tricolor’s temperature
measurement. Press the
Cursor Left
and
Right
key
to change the value to the actual water temperature,
then press the
Menu
key to save and exit.
Access the
Speed and Log
menu through the
Setup
menu screen.
Units
Pressing the
Cursor Right
key when
Units
is
highlighted will cycle through the options: KTS (knots),
MPH (miles per hour) or KPH (kilometres per hour).
Speed Cal
To calibrate speed, an accurate measurement of
the boat’s speed is required.
Obtain the speed either from a timed run over a
known distance, or from another instrument (e.g.
GPS, DGPS or calibrated speedometer). The
calibrated instrument may be on board or on
another boat travelling alongside.
Notes for accurate calibration:
• GPS speeds are only accurate enough when
above 20 knots, DGPS when above 5 knots. Best
results are achieved in calm conditions where
there is minimal current (best at high or low tide).
• Paddlewheel devices are generally accurate
enough when between 6 and 20 knots.
Continue travelling at the same speed and calibrate
the speed as follows:
Press the
Cursor Up
or
Down
key to highlight
Speed
Cal
, then press the
Cursor Right
key to select it.
This will display the FISH450 Tricolor’s uncalibrated
speed measurement. Press the
Cursor Left
and
Right
key to change this to the actual speed, then
press the
Menu
key to save and exit.
Log (Select)
Selects which log is displayed on the Data screen,
both the Total and Trip logs are always kept in the
FISH450 Tricolor but only the selected log is displayed.
Speed Cal
Speed may also be calibrated using Log Cal.
Log Cal
The log may also be calibrated using Speed Cal.
The Trip Log is used to perform a log calibration. First
zero the trip log (see below) then travel a known distance
in a straight line, stop at the destination and perform
calibration as soon as practical. Best results are
a display of total water depth is
required, or when depth of water
below the boat’s keel is required.
Positive value
