17.21 Transducer set-up menu options
The
Transducer Set-up
menu should be used when setting up your multifunction display for the first time or when installing
a depth transducer.
Menu Item
Description
Options
Transducer
Select the appropriate transducer type from those displayed.
Some transducer may be detected by the system
automatically.
Options available are dependant on the sonar
module connected.
Speed Transducer
Select the appropriate speed transducer from those available.
This option is only available if you are not using a combined
Depth/Speed or Depth/Speed/Temperature transducer.
Options available are dependant on the sonar
module connected.
Depth Offset (waterline)
Offset represents the depth of the transducer (relative to the
waterline).
• –9.9 to +9.9 feet — or equivalent units
Speed Offset
Offset applied to the speed log.
• 0 to 100%
Temperature Offset
Offset applied to the temperature transducer value.
• –9.9 to +9.9 °F — or equivalent units
Fishfinder Transducer Calibration
Your fishfinder transducer must be calibrated correctly to achieve
accurate depth readings.
The multifunction display receives the image from a sonar
module which processes sonar signals from a transducer
mounted in the water. If the transducer is equipped with a speed
paddle wheel and temperature-sensing thermistor, the sonar
module calculates speed and temperature. To ensure accurate
readings, it may be necessary to calibrate the transducer(s)
by applying offsets to depth, speed and temperature. As
these settings are held in the sonar module and relate to the
transducer, they are applied system-wide.
Depth Offset
Depths are measured from the transducer to the sea bed, but
you can apply an offset value to the depth data, so that the
displayed depth reading represents the depth to the sea bed
from either the keel or the water line.
Before attempting to set a waterline or keel offset, find out
the vertical separation between the transducer and either
the waterline or the bottom of the keel on your vessel, as
appropriate. Then set the appropriate depth offset value.
D9343--2
1
2
3
1
Waterline offset
2
Transducer / Zero offset
3
Keel offset
If an offset is not applied, displayed depth readings represent the
distance from the transducer to the sea bed.
Setting the depth offset
From the fishfinder application:
1. Select
Menu
.
2. Select
Set-up
.
3. Select
Transducer Set-up
.
4. Select
Depth Offset
.
The depth offset numeric adjust control is displayed.
5. Adjust the offset to the required value.
6. Select
Ok
to confirm setting and close the numeric adjust
control.
Setting the speed offset
From the fishfinder application:
1. Select
Menu
.
2. Select
Set-up
.
3. Select
Transducer Set-up
.
4. Select
Speed Offset
.
The speed offset numeric adjust control is displayed.
5. Adjust the offset to the required value.
6. Select
Ok
to confirm setting and close the numeric adjust
control.
Setting the Temperature offset
1. Select
Menu
.
2. Select
Set-up
.
3. Select
Transducer Set-up
.
4. Select
Temperature Offset
.
The temperature offset numeric adjust control is displayed.
5. Adjust the offset to the required value.
6. Select
Ok
to confirm setting and close the numeric adjust
control.
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