Raymarine LIGHTHOUSE 4 Operation Instructions Manual page 205

Menu item and description
[Record depth data]
Enables depth and position data to be recorded to a
MicroSD memory card.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[Waterline to tdcr]
Enter the distance between the waterline and your
depth transducer.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[Save to]
When a suitable MicroSD card has been inserted, the
free space available for recording depth data and
RealBathy is displayed.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[RealBathy]
Displays on the chart previously recorded RealBathy™
data saved to a MicroSD memory card.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[Visibility]
Determines the transparency of the RealBathy data
displayed onscreen.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[Height correction]
Determines the level of height correction applied to
RealBathy and depth data.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
[Density]
Selects the density of available depth contours.
This setting is available when using LightHouse™ and
legacy LightHouse™ vector charts.
Chart app - General
Options Menu item and description
• On [Sonar logging]
Allows logging of depth and position data to your
• Off
Navionics chart card.
This setting is available when using Navionics® charts.
[SonarChart Live]
Numeric depth Enables and disables the Navionics SonarChart Live
value feature, which enables the realtime creation and display
of high resolution bathymetry charts.
When set to [History], historical sonar chart live data
is displayed.
This setting is available when using Navionics® charts.
• SD1
[Visibility]
• SD2
Determines the level of transparency used when
displaying SonarChart data.
This setting is available when using Navionics® charts.
[Tide correction]
• On Enables sonar logging depth measurements to be offset
by tide height data from nearby tide stations.
• Off
Tide correction will be disabled when viewing historical
SonarChart Live data.
This setting is available when using Navionics® charts.
• 0% to 100% [Shallow depth shading]
Enables and disables the identification of areas deemed
to be shallow. When set to On, a red hatched area is
displayed in areas shallower than the specified depth.
This setting is available when using Navionics® charts.
• None
• Tidal
• Lake level
• Low
• Medium
• High
• Very high
Options
• On
• Off
• On
• Off
• History
• 0% to 100%
• On
• Off
• On
• Off
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