Operation Manual

15.20Sensitivitysettings
TheSensitivitysettingsmenuprovidesaccessto
featuresthatenhancewhatisdisplayedonscreen.In
mostsituationsdefaultvaluesshouldbeadequate.
Legacy,traditionalandCHIRPsonarmodules
CPx70
external
CHIRP
external
Tradi-
tional
external
Tradi-
tional
internal
Legacy
external
Manual
/Auto
Gain
Auto
Gain
Modes
Auto
Gain
Offset
Manual
/Auto
Inten-
sity
Auto
Inten-
sity
Offset
Color
Gain
TVG
Auto
TVG
Modes
Depth
Sensi-
tivity
Color
Thres-
hold
Power
Mode
DownVision
TM
andSideVision
TM
sonarmodules
DownVision
TM
SideVision
TM
Gain
Contrast
NoiseFilter
ColorThreshold
Gain
Thegainsettingsalterthewaythesonarmodule
processesbackgroundnoise.Adjustingthegain
settingscanimprovethesonarimage,however
foroptimumperformanceinmostconditions,we
recommendthatyouusetheautosettings.
Thegaincontroldeterminesthestrengthabove
whichechoesaredisplayedonscreen.
20%ManualGainAutoGain80%ManualGain
Auto
InAutomodethesonarmoduleautomaticallyadjusts
thegainsettingtosuitcurrentconditions.
AutoGainmodes
WhenconnectedtoaLegacysonarmoduleora
Traditionalinternalsonarmodule3AutoGainmodes
areavailable:
•Cruising(Low)
•Trolling(Med)
•Fishing(Fast)
AutoGainOffset
WhenconnectedtoaCPx70seriessonarmodule
AutoGaincanbeoffsetby+/–50%.Thisallows
smallmodicationtobemadetothegain,while
stillutilizingRaymarine’sproprietarynoiselterand
targetidenticationalgorithms.
Manual
Ifnecessaryyoucansetthegaincontrolsmanually,
betweenavalueof0%to100%.Thisvalueshould
besethighenoughtoseeshandbottomdetailbut
withouttoomuchbackgroundnoise.Generallya
highgainisusedindeepand/orclearwater;alow
gaininshallowand/ormurkywater.
Thenewvaluesremainsetevenwhenyouswitch
offthedisplay.
Onscreengaincontrol
Selectingtheonscreencontrolenablesyoutoadjust
thesettingasrequired.
WhenconnectedtoaCPx70
seriessonarmoduletheAuto
gaincanbeoffsetby+/-50%
Whenconnectedtonon
CPx70seriesexternal
CHIRP,externalTraditional
orDownVision
TM
sonar
modulesgainmodesarenot
required.
216
LightHouseMFDoperationinstructions