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ForwardScan | User Guide
Installation
Connecting the transducer
The ForwardScan™ transducer can be connected to the
StructureScan port on the SonarHub or the NSS evo2, leaving the
sonar port open for a CHIRP transducer. Refer to the ForwardScan
installation manual for transducer installation instructions.
Sonar performance
The accuracy of the sonar depth display can be aected by many
factors, including the type and location of the transducer and
water conditions. Never use this equipment to gauge depth or
other conditions for swimming or diving.
The choice, location, and installation of transducers and other
components of the system are critical to the performance of the
system as intended. If in doubt, consult your dealer.
To reduce the risk of misusing this equipment, you must read and
understand all aspects of the supplied documentation.
Sharing ForwardScan data
ForwardScan data can be shared with NSO evo2, NSS evo2 or
Zeus2 displays by connecting the forward-looking transducer to a
SonarHub on your Ethernet network.
You can also connect the transducer to a NSS evo2 to share
ForwardScan data with multi-function displays on your Ethernet
network.
¼ Note: We do not recommend operating dierent brands of multi-
function displays on the same network.
Warning: Do not rely on this equipment as your principle
source of navigation or hazard detection.
ForwardScan™ Sonar
User guide
Warning: It is the owner’s sole responsibility to install and
use the equipment in a manner that will not cause accidents,
personal injury or property damage. The user of this product is
solely responsible for observing safe boating practices.
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ForwardScan | User Guide
Operation
ForwardScan™ forward-looking sonar is a navigational aid that
helps you monitor the depth in front of your vessel.
ForwardScan features are available in the latest software update
for your multi-function display. Refer to your display’s brand
website to download the latest update.
¼ Note: Screen captures in this document are from a NSS evo 2 unit.
The look of your unit may dier slightly, but it will operate in a
similar manner.
Key Description
1 Transducer location shown as the origin on the screen
2 Depth range scale/Boat position
3 Point data
4 Depth history
5 Bottom
6 Forward range scale
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ForwardScan | User Guide
Accessing ForwardScan
ForwardScan sonar can be displayed full screen or in a multipanel page. Refer to your operation manual for information
about setting up a multi-panel page.
ForwardScan setup
Critical forward range and Critical depth
Critical Forward Range and Critical Depth are user-selected
thresholds that dene a critical zone forward of your vessel.
If you travel into water shallow enough to cross into the critical
zone, the Critical Zone alarm is activated. You can display the
critical and warning zones by activating Show zones.
Warning Forward Range and Warning Depth values are based on
the selected Critical Forward Range and Critical Depth values.
¼ Note: To receive Critical Zone alerts, enable ForwardScan alarm
on the Alarm settings tab. Refer to your unit’s operation manual
for information on enabling alarms.
Warning zone
Critical zone
ForwardScan display with Show zones active
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ForwardScan | User Guide
Heading extension
You can use the heading extension to monitor ForwardScan
on the chart panel. Heading extension colors are based on
ForwardScan alarm values.
ForwardScan extension
Green Safe
Yellow Warning
Red Critical
Select ForwardScan in the Extension lines options dialog to view
ForwardScan heading extension on the chart panel.
Red/Critical
Yellow/Warning
Green/Safe
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ForwardScan | User Guide
Transducer angle
We recommend installing the transducer vertical to the waterline.
In cases where that is not possible, the Transducer Angle setting
helps oset the dierence between the transducer angle and the
waterline.
If the transducer is angled toward the front of the vessel, a
positive value (0 to +15°) is entered in the Transducer angle
dialog. If the transducer is angled toward the rear of the vessel,
a negative value (0 to -15°) is entered in the Transducer angle
dialog.
ForwardScan options and settings
Depth
Controls depth range. Depth range is set to auto mode by
default.
Forward range
Controls the forward looking range. Maximum Forward range is
300’ (91 m).
Noise Rejection
Filters out signal interference and reduces on-screen clutter.
Record
Used to record ForwardScan sonar logs.
Pause
Pauses ForwardScan sonar transmissions.
Warning: Adjustments to the transducer angle value should
be done with caution. Large variations in the transducer angle
value can distort depth data, increasing the risk of striking
underwater obstructions.
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ForwardScan | User Guide
View
Palette
Several display palettes are available for a variety of water
conditions.
History ratio
Controls how much of the screen is used to show sonar history
on the ForwardScan image. The higher the ratio, the more history
will be shown.
Point data
By default, ForwardScan only shows the bottom. Access the Point
data menu to view all sonar data points, or only points (Objects)
in the water column.
Show zones
Displays warning zones (yellow) and critical zones (red) on the
screen.
Depth lines
Lines on the screen that make it easier to quickly estimate depth
and the underwater objects.
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