Raytheon HSB L760 User guide

HSB Series
L755 and L760
Fishfinder
Owner’s
Handbook
Document number: 81169_3
Date: November 1st 2000

HSB Series L755 and L760 Fishfinder Owner’s Handbook iii
HSB Series L755 and L760 Fishfinder
Owner’s Handbook
November 2000
SAFETY NOTICES
This equipment must be installed and operated in accordance with the
instructions contained in this manual. Failure to do so can result in personal
injury and/or navigational inaccuracies. In particular:
1.HIGH VOLTAGE. The LCD display unit contains high voltages.
Adjustments require specialized service procedures and tools only available
to qualified service technicians – there are no user serviceable parts or
adjustments.The operator should never removethedisplayunit coveror
attempttoservicetheequipment.
2.NAVIGATIONAID.Thechartplotter unit is only anaid to navigation. Its
accuracycan be affected by many factors,including equipment failure or
defects,environmental conditions,and improper handling or use. It is the
user’s responsibility to exercise common prudence and navigational
judgements. This unitshould notbe relied upon as a substitute for such
prudence and judgement.
RAYTHEONMARINEproductsaresupportedbyanetworkofAuthorized
ServiceRepresentatives.ForinformationonRaytheonproductsandservices,
contact either of the following:
UNITED STATES Raytheon Marine Company
22 Cotton Road, Suite 280
Nashua,NH03063-4219
Telephone: [phone]
[phone]
Fax: [phone]
EUROPE Raytheon Marine Limited
Anchorage Park
Portsmouth
Hampshire PO3 5TD
England
Telephone: [phone]
Fax: [phone]
Copyright © Raytheon Marine Company2000

iv HSB Series L755 and L760 Fishfinder
The technical and graphicalinformation contained in this handbook,to the
bestofourknowledge,wascorrectasitwenttopress.However, theRaytheon
policyofcontinuousimprovementandupdatingmaychangeproduct
specifications without prior notice.Asa result, unavoidable differences
between theproduct and handbook mayoccur fromtime to time, for which
liability cannot be accepted by Raytheon.
Raytheonisaregisteredtrademark ofRaytheonCompany.
SeaTalk is a registered trademark ofRaytheon MarineEurope Limited.
HSB is atrademark ofRaytheon Marine Company.
Pathfinder is a trademark of Raytheon Marine Company.
ThisproductcontainstechnologyprovidedunderlicensebyAcornGroupplc.
The copyright of this intellectual property is acknowledged by Raytheon
MarineCompany,asareAcorn’strademarksandpatents.Acorn’sworldwide
webaddress is http://www.acorn.com.

Preface v
Preface
ThishandbookdescribestheRaytheonHSBSeries L755 andL760LCD
display units. The L755 and L760 are combined fishfinder and chartplotter
devicesintendedforrecreationalpurposes.Thechartplotterunitisintendedas
an aid to navigation and should not be relied upon asa substitute for official
navigationcharts.
Note:The Fishfinder/chartplotter display unit includes acartridge holder as-
sembly which contains two slots for C-MAP NT chart cards.
This handbookcontainsvery importantinformationon the installationand
operation ofyour new equipment. In order to obtainthe bestresults in
operationandperformance,please read thishandbook thoroughly.
Raytheon’s TechnicalServices representatives or your local dealer will be
available to answerany questions you may have.
TFT LCD Displays
The colors of the display may seem to vary when viewedagainst acolored
background or in colored light. This isa perfectly normaleffectthat will be
seen with all color LCD displays.
IncommonwithallThinFilmTransistor (TFT)LCDdisplays,thescreenmay
exhibit a few (less than 20) wrongly illuminated pixels. These may appear as
blackpixelsin alight portionof thescreen, oras colored pixels inblack areas.
CAUTION:
To provide protectionagainst the damaging effects of UV light, itis
advisabletoreplacethesuncoverprovidedwhenthecolorLCDdisplayis
notinuse.
Warranty
ToregisteryourHSBSeriesdisplayunitownership,pleasetakeafewminutes
tofilloutthewarrantyregistrationcardfoundattheendofthishandbook.Itis
veryimportantthatyou completetheownerinformationandreturnthecardto
the factory in order to receive fullwarranty benefits.

vi HSB Series L755 and L760 Fishfinder
EMC Conformance
All Raytheon equipmentand accessories are designed to the bestindustry
standardsfor use inthe recreationalmarine environment.
ThedesignandmanufactureofRaytheonequipmentandaccessoriesconform
to the appropriate Electromagnetic Compatibility (EMC) standards, but
correctinstallationisrequiredtoensurethatperformanceisnotcompromised.

Contents vii
Contents
Warranty .......................................................................................... v
EMC Conformance ......................................................................... vi
Chapter 1: Overview ......................................................................................... 1-1
1.1 Introduction ..................................................................................1-1
General..........................................................................................1-2
Display UnitFeatures ...................................................................1-4
Operating Modes ..........................................................................1-4
1.2 The Fishfinder Display .................................................................1-6
Fishfinder Options ........................................................................1-7
FishfinderFunctions .....................................................................1-8
1.3 The Chartplotter Display ............................................................1-10
Chartplotter Display Options ......................................................1-10
Chartplotter Functions ................................................................1-12
1.4 Operating Controls .....................................................................1-13
Trackpad and Cursor ...................................................................1-14
Dedicated Keys ...........................................................................1-15
Soft Keys .....................................................................................1-16
Pop-Up Menus ............................................................................1-16
Database Lists .............................................................................1-17
Chapter 2: Installation ..................................................................................... 2-1
2.1 Introduction ..................................................................................2-1
Selecting the Correct Type of Transducer .....................................2-2
Planningthe Installation ...............................................................2-3
EMC Installation Guidelines ........................................................2-3
2.2 Unpacking and Inspecting the Components .................................2-5
2.3 SelectingtheEquipmentLocation ................................................2-6
Transducer Mounting Location ....................................................2-6
Display UnitMountingLocation ................................................2-10
2.4 Cable Runs ..................................................................................2-13
Power Cable ................................................................................2-13
Transducer Cable ........................................................................2-14

viii HSB Series L755 and L760 Fishfinder
2.5 Installing the Transom Mount Transducer ..................................2-15
Preparation ..................................................................................2-15
Installation ..................................................................................2-16
2.6 Installingthe Thru-hull Transducer ............................................2-17
Tools and Material Needed .........................................................2-17
Preparation ..................................................................................2-17
Installation ..................................................................................2-20
Installation in a Cored Fiberglass Hull ........................................2-26
Check for Leaks ..........................................................................2-27
2.7 Mounting the Display Unit .........................................................2-28
2.8 System Connections ...................................................................2-30
Display UnitConnection ............................................................2-31
EMC Conformance .....................................................................2-35
2.9 Integrated Systems ......................................................................2-35
HSB™High Speed Bus ..............................................................2-36
SeaTalk®and NMEA In .............................................................2-37
Using the SeaTalk AuxiliaryJunction Box .................................2-42
Data Output .................................................................................2-43
Data Conversion .........................................................................2-44
2.10 Integrated System Checks ..........................................................2-45
Chart Display ..............................................................................2-45
Received Data .............................................................................2-45
Transmitted Data ........................................................................2-45
Chapter 3: Getting Started & Adjusting the Display ................................... 3-1
3.1 Introduction ..................................................................................3-1
ConventionsUsed .........................................................................3-1
Simulator ......................................................................................3-1
3.2 Switching theDisplay On and Off ................................................3-2
Simulator Mode ............................................................................3-5
Changingthe Lighting & Contrast (L755) ....................................3-5
Changingthe Brightness & Color Settings (L760) .......................3-6
Power Settings ..............................................................................3-8
3.3 Controlling the Display.................................................................3-9
Selecting the Mode of Operation ..................................................3-9

Contents ix
3.4 Fishfinder Display Control Functions ........................................3-16
Viewing Data Boxes ...................................................................3-16
Changingthe Scroll Speed ..........................................................3-16
Changingthe Fishfinder Range ..................................................3-18
Selecting the Frequency ..............................................................3-19
Using Bottom Lock .....................................................................3-20
Using A-Scope ............................................................................3-22
Using Zoom ................................................................................3-23
3.5 ChartDisplay Control Functions ................................................3-25
Customizing the Screen Presentation Options ............................3-25
MovingAround the Chart ...........................................................3-27
3.6 TypicalChartScenarios ..............................................................3-31
Place and Goto a Waypoint .........................................................3-32
Make andFollow a Route ...........................................................3-34
Review Your Passage Plan ..........................................................3-36
Chapter 4: Fishfinder Operations ................................................................... 4-1
4.1 Introduction ..................................................................................4-1
4.2 Interpreting and Adjusting the Fishfinder Image ..........................4-1
Fish Indications .............................................................................4-2
Bottom Indications .......................................................................4-3
Using White Line ..........................................................................4-4
Adjusting Display Gain(Sensitivity) ...........................................4-4
4.3 Fishfinder Data Window ...............................................................4-7
4.4 Using Alarms ................................................................................4-8
4.5 Using VRM to Determine Depth & Distance fromBoat ..............4-9
4.6 Waypoints ...................................................................................4-11
Placing a Waypoint ..................................................................... 4-11
4.7 MOB ...........................................................................................4-13
Chapter 5: Standard Chart Operations .......................................................... 5-1
5.1 Introduction ..................................................................................5-1
5.2 Using Chart Cards .........................................................................5-2
Inserting a Chart Card ...................................................................5-2
Removing a Chart Card ................................................................5-3

x HSB Series L755 and L760 Fishfinder
Displayingthe Chart Data .............................................................5-3
DisplayingObject Information .....................................................5-4
5.3 Working with Waypoints ..............................................................5-8
Introduction ..................................................................................5-8
Placing a Waypoint .......................................................................5-9
Selecting a Waypoint ..................................................................5-10
Waypoint Data Display ...............................................................5-10
Editing the Waypoint Details ......................................................5-11
Erasing a Waypoint .....................................................................5-12
Movinga Waypoint ....................................................................5-13
5.4 Working with Routes ..................................................................5-14
Creating a New Route .................................................................5-15
Saving the Current Route ............................................................5-16
Clearing the Current Route .........................................................5-17
Retrieve a Route From the Database ...........................................5-18
DisplayingRoute Information ....................................................5-19
Using the Route List to Erase and Name a Route .......................5-21
Editing a Route ...........................................................................5-21
5.5 Following Routes and Going to Points .......................................5-24
Follow a Route ............................................................................5-24
Target PointArrival ....................................................................5-26
Other Follow Route Options .......................................................5-26
Going To an Individual Target Point ...........................................5-27
Stop Follow or Stop Goto............................................................5-28
5.6 Transferring Waypoints and Routes ...........................................5-29
5.7 Using Tracks ...............................................................................5-31
Setting Up aTrack ......................................................................5-32
Clearing the Current Track .........................................................5-32
Managing Tracks ........................................................................5-32
Chapter 6: Further Chart Operations ............................................................. 6-1
6.1 Introduction ..................................................................................6-1
6.2 Measuring Distances Using the VRM/EBL Key ..........................6-2
6.3 Alarms and Timers ........................................................................6-4
Alarm Reporting ...........................................................................6-4

Contents xi
Setting Alarms and Timers ...........................................................6-4
6.4 Man Overboard (MOB) ................................................................6-6
6.5 Cursor Echo .................................................................................. 6-7
6.6 GPS Setup .....................................................................................6-8
6.7 Data Log Mode .............................................................................6-9
Chapter 7: Setting Up the System Defaults .................................................. 7-1
7.1 Introduction ..................................................................................7-1
7.2 Changing the Set Up Parameters ..................................................7-2
7.3 System Set Up Parameters ............................................................7-4
Data Boxes ....................................................................................7-5
Bearing Mode ...............................................................................7-6
Cursor Reference ..........................................................................7-6
Cursor Readout .............................................................................7-6
Day/Night (L755 Monochrome Display) .....................................7-6
Help ...............................................................................................7-6
Soft Keys .......................................................................................7-7
Key Beep ......................................................................................7-7
MOB Data .....................................................................................7-7
Menu Timeout Period ...................................................................7-7
Units ..............................................................................................7-7
Variation Source ...........................................................................7-7
Bridge NMEA Heading ................................................................7-8
Cursor Echo (Systems with HSB Radar) ......................................7-9
Date and Time Settings .................................................................7-9
Language ......................................................................................7-9
Simulator ....................................................................................7-10
7.4 Fishfinder Set Up Parameters .....................................................7-10
Target Depth ID .......................................................................... 7-11
Color Bar .....................................................................................7-11
Depth Digit Size .......................................................................... 7-11
Sonar HSB Mode ........................................................................7-11
Depth Offset ................................................................................ 7-11
Speed Calibrate ........................................................................... 7-11
Temperature Calibration .............................................................7-11

xii HSB Series L755 and L760 Fishfinder
Sonar Simulator ..........................................................................7-12
7.5 ChartSet Up Parameters .............................................................7-13
Customize Chart .........................................................................7-13
Plotter Mode ...............................................................................7-14
Chart Orientation ........................................................................7-14
Object Information .....................................................................7-15
Waypoint Options .......................................................................7-15
Vectors ........................................................................................7-15
Datum Selection .........................................................................7-15
PositionOffset ............................................................................7-16
Chapter 8: Maintenance and Problem Solving ............................................. 8-1
8.1 Maintenance .................................................................................8-1
Routine Checks .............................................................................8-1
Cleaning Instructions ....................................................................8-1
EMC Servicing and Safety Guidelines .........................................8-2
8.2 Resetting the System .....................................................................8-3
8.3 Problem Solving ...........................................................................8-4
How to ContactRaytheon (US) ....................................................8-5
How to ContactRaytheon (Europe) ..............................................8-6
Worldwide Support .......................................................................8-7
Appendix A: Specifications ...............................................................................A-1
Appendix B: Using the Auxiliary Junction Box ................................................B-1
Raystar 112, 105, Apelco 182 and 182XT ................................... B-2
Autohelm GPS,Z260andZ273 .................................................. B-3
Raystar 112LP (SeaTalk version) ................................................ B-4
Raystar 114 Combined GPS and Differential Beacon Receiver .. B-5
Appendix C: C-MAP Chart Card Features ........................................................ C-1
Appendix D: SeaTalk and NMEA Data Received and Transmitted ...............D-1
Appendix E: Abbreviations ............................................................................... E-1

Chapter 1: Overview 1-1
Introduction
Chapter 1: Overview
1.1 Introduction
This handbookdescribes thefollowing HSB Series systems:
L755 Fishfinder with Chartplotter, 7" Monochrome LCD Display
L760 Fishfinder with Chartplotter,7" Color LCD Display
Ifyou havean HSBSeriesLCD display, it is possible toconnectanotherHSB
series LCDor CRT displaytoprovide an integratedsystem.Connecting an
HSB SeriesFishfinder display to a Pathfinder Radar display enables radar
datatoberepeatedonthefishfinderdisplayandfishfinder/chartdatarepeated
ontheradardisplay.
Thishandbookdescribesthedisplayunitcontrolsanddetailsbothfishfinder
and chart operations. Controls that are specific to either fishfinder or
chartplotter are described infishfinder or chart sections/chapters.
Note:Many illustrations in this handbook show example screens. The screen
yousee on your display dependson your system configuration andsetup op-
tions, so it may differ from the illustration.
How to Use This Handbook
If you areinstallingthe display system yourself, you should read Chapter 2
before you start the installation. This chapter also provides information that
will be useful if you areconnecting your HSB Series system to other
equipment.
Foranoverviewof thedisplayunitcontrols,thefishfinderand the chartplotter
systems,readChapter 1.Chapter 3willhelpyoustart usingyoursystem.
For detailed information on fishfinder operations refer to Chapter 4.
For chartplotter operating details, refer to Chapter 5and Chapter 6.
To change the system set up defaults, read Chapter 7.
Chapter 8 provides information on user maintenance, and whatto do if you
experience problems.
The Appendicesprovide additional information thatyou may find useful:
AppendixAlists the technicalspecifications forthe fishfinder and for the
chartplotter.
AppendixBprovidesdetails on connecting the display unit to specific GPS
systems.
AppendixCdefines the chart features shown on the chartdisplay.

1-2 HSB Series L755 and L760 Fishfinder
General
AppendixDdefines the SeaTalk and NMEA data that is transferred on
integrated systems.
AListofAbbreviations,Indexand warranty information are included at the
end of the handbook.
A summary of thefishfinder and chartplotter controls are provided on the
Quick Reference Cards supplied with your system.
Terminology
The following terminology isused to describe radar and chartplottersystems:
General
The HSB Series Fishfinder, illustrated below, comprises the 7" LCD display
unit, fishfinder transducerand associated cables.
Master A unitcapable ofsourcingspecific data suchas
fishfinder,chart,or radar data.
Repeater Aunitcapableofdisplayingdata,suchasradar,
from the HSB.
FishfinderDisplay Unit providingFishfinder Master andRadar
Repeater functionality.TheL755 and L760 dis-
plays also provide ChartMaster functionality.
RadarDisplay Unit providing Radar Master, Fishfinder
Repeaterand Chart Readerfunctionality.
Chart Display Unit providing Chart Master, Fishfinder
Repeaterand Radar Repeaterfunctionality.
CombinedDisplay Unit providing both Fishfinder and Chartor
Radar andRadar Repeater functionality.
IntegratedSystem Additional instruments are connected via the
HSB, Seatalk or NMEA interfaces.
HSB™ High Speed Bus -links compatible display
units.Forfull display andcontrolbetweenHSB
Seriesdisplayunits,theunitsmustbeconnected
viaHSBand SeaTalk.

Chapter 1: Overview 1-3
General
Figure 1-1: Fishfinder System
Display Unit
The HSBSeriesLCDdisplayunitiswaterprooftoCFR46andcanbeinstalled
eitherabove or below deck.
Theunitincludes:
•7" color (L760) or monochrome (L755) LCD display
•Trackpad
•Eleven dedicated(labeled)control keys
•Four softkeys (unlabeled) whose functionalitychanges
•Two slots for the C-MAP NT®chartcards
The display and keys can be illuminated for night-time use.
The HSB (High Speed Bus) connection enables transfer of databetween two
compatible units. For example, the fishfinder data is transferred from the
fishfinder(the master display) via the HSB connection and can be displayed
and controlled on any otherHSB SeriesLCD or CRTdisplay (the repeater
display).In particular,youcan connectyour HSB SeriesFishfinderto a
remote HSB Series Pathfinder Radar to provide fishfinder, chart, and radar
functionality on both displays.
Note:Your HSB Series display may require a software upgrade to repeat
Fishfinder data. Please contact your authorized Raytheon dealer for details.
Fullfunctionalityofthe fishfinder/chartplotterisachievedwhenitispartofan
integrated system, with other equipment (in additionto another HSBunit)
connected via SeaTalk or NMEA 0183.Data from this equipmentincluding
position and headingis displayed on the display and is used in calculations.
Details on connecting other equipment are given in Chapter 2.
D4866-1

1-4 HSB Series L755 and L760 Fishfinder
Display Unit
Features
Transducer
The HSB SeriesFishfinder issupplied with a thru-hull bronze transducer or a
transom-mountplastictransducer.
The transducers measure water depth and temperature, distance traveled is
also measured andisused to calculatespeed. It is important to position your
transducercorrectly, as described inChapter 2.
Display Unit Features
•Fishfinder –Usesdepth,from eithera transom mount or thru-hulltrans-
ducer,and speed andtemperatureif the transduceris so equipped.
•Dual or split frequency fishfinder display –50 kHz, 200 kHz
•Fishfinder display options –fishfinder window, zoom, bottom lock and A-
scope.
•Chartplotter –Displays chart information from the C-MAP NT®chart
cards (C-Cards)
•Uses position informationfrom GPS, DGPS or Loran-C technology
•Displaysand transfers SeaTalk, NMEA and HSB data
•Providesfull control of datafrom otherHSB instruments
•Three full-screen operating modes: Fishfinder, Chart,Data Log (if appro-
priate data is available)
•View fishfinder and chartsimultaneously
•Half-screen windows todisplay additional data: depth/temperature graph,
Course Deviation Indicator (CDI), Bearing and Distance Indicator (BDI),
navigationdata.
•Choice ofchart orientation: Head Up, CourseUp and NorthUp
Operating Modes
The combinedFishfinder/Chartplotter display provides, three full-screen
modes–fishfinder,chartanddatalog;you selectthe operatingmodeusingthe
DISPLAY key as described in Chapter 3.
YoucanalsosetWindowsOntosplitthedisplayintotwohalf-screenwindows
toshowsupplementarydata,ortodisplayfishfinderandchartsimultaneously.
The mainoperating mode (fishfinder or chart) is displayed in the upper
window; you choose what is displayed in the lower window.
In addition, if you have an HSBSeries Pathfinder Radar display connected,
you can set the display to radarmode; this provides similar functionality to a
combined Pathfinder Radar/Chartplotter.

Chapter 1: Overview 1-5
Operating Modes
Half -Screen Window Options
The following information, if available on your system, can be shown:
•Chart display (when in Fishfinderor Radar mode)
Fishfinderdisplay(wheninChartmode):
Radardisplay(wheninChart mode):
If data is available, either as afunctionofthe combined display unit or via
the HSB link, it can be displayed.
•Depth/tempgraph(Fishfindermode):This showsaplotwatertempera-
ture and depth against time.
•Data(Fishfindermode): This option splits the fishfinder vertically. The
left hand window displays data boxes; there are three different sets of data
(A, B andC) thatyou can selectfor display.
•CDI:This gives the Course Deviation Indicator graphical display, with
data relating to the targetwaypoint.
•BDI:ThisgivestheBearingandDistanceIndicatorgraphicaldisplay,with
data relating to the targetwaypoint.
•Nav Data (Chart mode): This shows sixteen data boxes, providing navi-
gationaldata in the units specified in your set up. Notethat up to 6of these
data boxes are also available asa user-selectable group (see Section 7.3).
Fordetails on the radar, refer to the HSB Series Display Owner’sHandbook
suppliedwith yourradar.
Note:MARPA functionality is available on the fishfinder display if you have
an integrated system with a Pathfinderradar master display that includes
MARPA as a primary function.
Details on selecting windows are given inChapter 3.
Table 1-1: Window Options for Combined/Integrated Systems
Full-screen
mode
Half-screen Window Options
- FishfinderDisplay only
Half-screen Window Options -
Fishfinder + Radar Displays
Fishfinder Mode Depth/temp, Chart, CDI, BDI, or
Data
Depth/temp, Chart or CDI, BDI
Chart Mode CDI, BDI, Nav Data or Fishfinder CDI, BDI, Nav Data, Fishfinder or
Radar
Radar Mode Not Available CDI, BDI, Chart or Nav Data
Data Log Mode Half-screen Windows not available Windows not available

1-6 HSB Series L755 and L760 Fishfinder
The Fishfinder
Display
1.2 The Fishfinder Display
When you firstturnthedisplayuniton andselect fishfinder mode, the
scrolling bottom graph is displayed.Thisisa graphical representation ofthe
echoesseenbytheFishfinder.Astimepasses,thisdisplayscrollsfromrightto
left and becomes a record of the echoes seen. A typical display is shown in
Figure 1-2.
The imagesat the right hand side of the display arethe mostrecent echoes.
Some echoes indicate fish, and others show the bottom. Itcan also indicate
bottom structures,suchas areefor shipwreck. Theupper andlower depth
range limits are shown.
The fishfinder screenincludes a status bar that displays transducer frequency
and indicates which auto settings areenabled (Gain, Color Gain, Range,
Zoom andFrequency),and alarmstatus (fish and shallow/deepwaterdepths).
Youcan customize the fishfinderby choosing what is displayed and how it is
displayed (including language and units).For example, youcanset thescroll
speed ofthe bottom graph display, andyou can selectthe range to adjust the
amountofdetail displayed.
You canview the cursor position anda varietyofdata (suchas speed,heading
and depth)from the transducerand otherequipment in user-selectabledata
boxes. These data boxes can be moved around thescreen and they can be
switched on or off.
Chapter 3includes detailson adjusting the display, other setup optionsare
describedinSection 7.3 andSection 7.4.

Chapter 1: Overview 1-7
Fishfinder Options
Figure 1-2: Typical Fishfinder Display
Fishfinder Options
The fishfinder providescontrols to select additional modes:
•Frequency–youcanselectthetransducerfrequency, 50kHzforwidecov-
erage and deepwater,200 kHzfor a detailedview, both frequenciessimul-
taneously or auto-frequency. The default setting is auto-frequency, which
determines the optimum frequency of operation based on the current
depth.
•Bottom Lock –changes the operating mode to re-set the bottom. It pro-
vides a bottom-up view: the bottom is used as the reference, its image is
flattened and depths aredisplayed here. Bottom lockmode is used prima-
rily to filter-out the bottom structure and display fish details only.
D5021-3
50
75
52
ZOOMFREQUENCY BTM.LOCK A-SCOPE
AUTO GCRZFH
ft
8
45
38
50kHz
0
100
SD
25
Gain
Color gain
Range
Bottom depth
Cursor,
controlled
by trackpad
Auto
Mode
Indicators
Water surface
Frequency
Target Depth ID ON
Alarm enabled
Frequency
Power
Zoom
Shallow, Deep Alarm
Indicators
Fish
Depth markers
Fish echo
Fish depth
Range

1-8 HSB Series L755 and L760 Fishfinder
Fishfinder
Functions
•A-scope–displays a real-time image of the bottom structure and fish
directly below the transducer. The A-scope window also displays the pat-
ented Bottom Coverage width indication.
•Zoom–enlargesall orpartofthe bottom graphdisplay. You canselect x2,
x4 or x6 magnification and the zoomarea can be automatically or manu-
allyadjusted.
Youcan select Zoom,Bottom Lock or A-scope to be vertically split with the
bottom graph display. Alternatively, Zoom or Bottom Lock can be displayed
inplaceofthebottomgraphdisplay.
If you choose dualfrequency, the scrolling bottomgraph is displayed in both
frequencies, split horizontally. Zoom, Bottom Lock or A-scope can be
displayed with the dual frequency graph.
All of these options are available when the fishfinder is displayed in a half-
screen window.
Fishfinder Functions
The HSB Series Fishfinder includes the following functions:
•Automatic or manual selection of scroll speed for bottom graph display.
•Automaticormanualselectionoftransducerfrequency
•Automatic or manual selection of upper and lower depth range limits.
•Adjustmentofforeground/backgroundcolorandimagecolorthresholdon
the L760color display.
•Adjustment of Gain, Color Gain and STC.
•Set up alarmsfor Fish,Shallow water and Deep water.
•VRM marker to determine depth and distance.
•Add marks to record importantor dangerous locations.
•ManOverboard(MOB)tonavigatebacktoapersonorobject.
Operation of these fishfinder functions is described in Chapter 3 and
Chapter 4.