Raymarine i40 - Adjusting the Contrast; Calibration

6.5 Adjusting the contrast
The contrast can be adjusted using the Action button.
During normal operation:
1. Press and hold the Action button for 2 seconds, or from the
backlight level screen press and hold the Action button for 1
second.
The current contrast level is displayed.
2. Press the Action button again to cycle through the available
contrast settings.
3. To return to normal operation press the Up or Down button, or
wait for the 5 second time-out.
6.6 Calibration
Before rst use calibration procedures must be carried out to ensure
optimum performance of the instrument with the vessel.
The calibration procedures are:
• User calibration
• Intermediate calibration
• Group setup
• Dealer calibration
Note: Group setup is for group illumination and is not part of
the calibration process.
User calibration
Calibration procedures are dependant on instrument display variant.
User calibration options include:
i40 Bidata i40 Depth i40 Speed i40 Wind
Setting the depth
display response.
Setting the depth
display response.
Setting the speed
display response.
Setting the wind
angle and speed
response values.
Setting the speed
display response.
*Setting the
required units for
depth readings.
*Setting required
units for speed
readings.
Setting the
required wind
speed units.
*Setting the
required units for
depth readings.
*Setting the
required depth
offset.
*Setting the
required units
for distance
readings.
*Linearize and
align rotavecta.
*Setting required
units for speed
readings.
*Locking the
shallow alarm.
*Setting required
units for water
temperature.
*Setting the
required units
for distance
readings.
*Setting the
correct speed
reading.
*Setting required
units for water
temperature.
*Setting the
correct speed
reading.
*Setting the
required depth
offset.
*Locking the
shallow alarm.
Note: *These settings are only available on units with the
instrument status set to Master (see Intermediate Calibration for
details).
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, nd 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.
32 i40