Image Adjustments - Raymarine T303 Installation And Operation Instructoins

Thermal camera surveillance mode
In surveillance mode the camera pans left and right continuously.
The camera continues to pan until surveillance mode is disabled, or
the JCU (Joystick Control Unit) is used to move the camera. When
this occurs the camera does not automatically resume surveillance
mode and the mode must be enabled again if required.
To enable surveillance mode using only the JCU you must set the
User programmable button to Surveillance mode.
Thermal camera stabilization
The Raymarine T470SC and T473SC thermal cameras includes a
mechanical stabilization feature.
The mechanical stabilization feature improves image stability by
compensating for vessel motion and keeping the camera aimed
at the point of interest. Mechanical stabilization has two aspects:
horizontal (azimuth) and vertical (elevation). By default, mechanical
stabilization is set to on, which provides the best on-the-water
performance particularly when the vessel is underway and traveling
on rough water or in swell conditions. You can disable or enable
stabilization whenever you want. When you enable full stabilization
(horizontal and vertical), the Stabilization On (no wave) icon flashes.
It does not display continually, since this is the normal mode of
operation. If you disable stabilization, the Stabilization Off (wave)
icon remains on the screen to make you aware that the motion of
the vessel can affect the camera performance. This is not a normal
mode of operation. Stabilization is automatically turned off when
the camera is stowed, but the system restores your setting when
the camera is powered on. You can turn off the horizontal (pan)
stabilization while retaining the tilt stabilization by enabling point
mode.
Enabling / Disabling stabilization
Stabilization is enabled by default. You can enable or disable
stabilization at any time by following the steps below.
Using the JCU:
1. Press MENU.
2. Select System Setup.
3. Select Enable Stabilization to turn on mechanical stabilization,
or
4. Select Disable Stabilization to turn off mechanical stabilization.
5. Press MENU to cancel the on-screen menu.
Thermal camera point mode
Point mode is only applicable to thermal cameras which have
mechanical stabilization.
Enabling point mode only has significance when stabilization
is enabled. Enabling point mode turns off the horizontal (pan)
stabilization while retaining the vertical (tilt) stabilization. This can
be helpful when you want to use the thermal camera as an aide
to navigation and keep the camera pointing in the same position
relative to the vessel as it turns. For example, you may have
stabilization enabled and have set the camera to point straight
ahead relative to the front of the vessel. If the vessel is turned
at a sharp angle under these conditions, the camera sensor will
not follow the direction of the vessel. Enabling point mode keeps
the camera in sync with the vessel direction while maintaining a
stable elevation position. When point mode is enabled, a lock icon
displays. The camera's azimuth position is now locked to the base.
When you disable point mode, the unlock icon displays momentarily.
The camera always starts up with point mode disabled.
Enabling / Disabling point mode
Point mode is disabled by default. With Stabilization enabled you
can also enable point mode at any time by following the steps below.
Using the JCU:
1. Press MENU.
2. Select Enable Point Mode to turn on point mode, or if already
enabled
3. Select Disable Point Mode to turn off point mode.
4. Press MENU to cancel the on-screen menu.
System operation and setup

6.5 Image adjustments

Thermal camera scene presets
Scene presets enable you to quickly select the best image setting
for the current environmental conditions.
During normal operation the thermal camera automatically adjusts
itself to provide a high-contrast image optimized for most conditions.
The Scene presets provide 4 additional settings that may provide
better imagery in certain conditions. The 4 modes are:
Night Running — scene preset mode for night conditions.
Day Running — scene preset mode for daytime
conditions.
Night Docking — scene preset mode for night docking.
Search — scene preset mode for identifying people or
objects in the water.
Although the preset names indicate their intended use, varying
environmental conditions might make another setting more
preferable. For example, the night running scene preset might also
be useful while in a harbor. You may find it beneficial to experiment
with the different scene presets to discover the best preset to use
for different conditions.
Thermal camera color modes
A range of color modes are available to help you distinguish objects
on-screen in different conditions.
Changing the color mode switches the thermal camera image
between a greyscale mode and 1 or more color modes. There are
5 color modes available.
The factory default color mode is red, which may improve your night
vision. This default mode can be changed if required using the
camera's on-screen Video Setup menu.
Note: If you have the Disable Color Thermal Video option
selected in the camera's on-screen Video Setup menu, only 2
color modes are available — greyscale and red.
Thermal camera reverse video
You can reverse the polarity of the video image to change the
appearance of objects on-screen.
The reverse video option (video polarity) switches the thermal
image from white-hot (or red-hot if the color mode setting is active)
to black-hot. The difference between white-hot and black-hot is
shown below:
White-hot thermal image.
Black-hot thermal image.
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