2.
[Below transducer]
— This is the default reading from the transducer
(zero offset applied).
3.
[Below keel]
— The depth reading will be decreased from the transducer’s
default reading.
Setting a depth offset
You can set the point depth readings are taken from.
1. Open the
[Fishfinder app]
.
2. Open the
[Transducer]
settings menu:
[Menu > Settings Transducer]
.
3. If you have more than 1 sonar transducer installed, then you will need
to select the relevant transducer.
4. Select either
[Below keel]
,
[Below waterline]
, or
[Below transducer]
as
required.
i.
If you have selected
[Below keel]
enter your transducer’s distance
above the lowest point of your keel in the offset field.
ii. If you have selected
[Below waterline]
enter your transducer’s distance
below the waterline in the offset field.
Setting a temperature offset
If your sonar transducer includes a temperature sensor then you can check
and calibrate your temperature reading.
1. Open the
[Fishfinder app]
.
2. Open the
[Transducer]
settings menu:
[Menu > Settings Transducer]
.
3. If you have more than 1 sonar transducer installed, then you will need
to select the relevant transducer.
4. If required, select the
[Enable temperature sensor]
toggle switch to
enable the sensor..
5. Measure the actual water temperature using a thermometer.
6. Check your reading against the displayed
[Current temperature ]
.
7. If the readings are not the same, select
[Calibrate temp]
and enter the
difference between your 2 readings.
RealVision™ AHRS calibration
RealVision™ 3D and RealVision™ 3D Max transducers include a built-in AHRS
(Attitude and Heading Reference Sensor), which measures the motion of
your vessel to assist in the rendering of sonar images. After installation all
RealVision™ transducers require calibration.
An uncalibrated transducer can produce an offset to the front edge of the
render of the bottom in the sonar image, as illustrated below.
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