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Furuno CSH8LMK2 User guide

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CSH8LMK2BASESETTINGS
AGUIDEFORBASICSETUPFORTHECSH8LMK2

1
SETTINGS
PRESET
Thesettingsshowbelowareaneffectivestartingpresetforthesonar.Examplesofchangestothesesettingsare
reflectedinadditionalscreencaptures.
NOTE:ONCESET,ITISNOTCOMMONTOALTERTHESONARSETTINGS.
2
TVG‐TIMEVARIEDGAIN
The8LhastwoTVGcontrols:[TVGNEAR]and[TVGFAR].[TVGNEAR]controlsthesonarsgainfrom0‐900ft,[TVG
FAR]controlsat900ftandfurther.Ahighervalueresultsinastrongerlong‐rangereturn.
SET[TVGFAR]BETWEEN6AND8INITIALLY.

[TVGFAR]=0
[TVGFAR]=8
3
AGC–AUTOMATICGAINCONTROL
[AGC]automaticallylowersthe8L’sgainwhenstrongreturnsaredetected,suchastheseabed.Ahigher[AGC]
settingresultsinmoredefinedlong‐rangetargets.
SET[AGC]TO1INITIALLY.

[AGC]=1
[AGC]=10
4
2
ND
ACG–SECONDAUTOMATICGAINCONTROL
[2
nd
ACG]worksinconjunctionwiththe[AGC].[2
nd
ACG]increasesthesonarsgainafteritwasdecreasedbya
strongseabedreturn.Similarlyto[AGC],ahigher[2
nd
ACG]settingresultsinreducedlong‐rangegain.
SET[2NDACG]TO2INITIALLY.

[2
nd
AGC]=2
[2
nd
AGC]=10
5
NOISELIMITER
The[NOISELIMITER]eliminatesnoiseorclutterfromthesonardisplay.Thissettinghaslimitedeffectonsonar
returns.
SET[NOISELIMITER]TO5INITIALLY.

[NOISELIMITER]=10
[NOISELIMITER]=0
6
COLORSETTINGS
COLORCURVE
Sonarreturnsshowsmall
changeswhenthe
[COLORCURVE]is
modified.
SET[COLORCURVE]TO
1INITIALLY.

[COLORCURVE]=4
[COLORCURVE]=1
7
COLORRESPONSE
Thefour[COLOR
RESPONSE]settingswill
havemoreofaneffect
onthesonarreturns.
SET[COLOR
RESPONSE]TO4
INITIALLY.

[COLORRESPONSE]=1
[COLORRESPONSE]=4
8
DELETECOLOR
[DELETECOLOR]isusedto
removeweakertargets.
SET[DELETECOLOR]TO4
INITIALLY.

[DELETECOLOR]=0
[DELETECOLOR]=10
9
ECHOAVERAGE
[ECHOAVERAGE]eliminatesinterferencefromothersoundersandsmoothstargetvariationsbetween
transmissioncycles.
SET[ECHOAVERAGE]TO2OR3INITIALLY.
CSH7040REMOTECONTROL
Standardoperation
canbemanaged
fromtheCSH7040
remotecontrol.
Somevesselsmay
usetworemote
controls.Iftwo
remotesare
installed,anA/B
switchwillbe
requiredtoselectthe
controllerin‐use.

10
ADDITIONALFUNCTIONS
TRACKLINEANDEVENTMARKS
TheTrackLinedisplaysthevesselspasttrack.TheEventMarkisareferencepointcomparedtothevessel’scurrent
location.TheTrackLinelengthcanbeselectedtobeeither5xor10xtherangesetonthesonar.Thesonarhasup
to10EventMarks,numberedforreference.The11thMarkwilleraseMarknumber1.TheRangeandBearingto
thelatestEventMarkisalwaysdisplayedinthebottomlefthandcornerofthedisplay.

LatestEventMark
EventMark
11
OFFCENTER
ToOff‐Centerthedisplay,movethecursortoanylocationontheechodisplayandpushthe[Off‐Center]button.
Thiswilloff‐centerthedisplaytothecursor’slocation.Pushingthe[Off‐Center]buttonagain,willreturnthe
displaytoitsoriginallocation.

CenteredDisplay
Cursor
Off‐CenteredDisplay
12
ECHOINTERPRETATION
Belowaresomeexamplesofechoreturns.
CURRENTRIP
BAIT
13
BLUEFINTUNA
MARLIN
14
TILTANGLES
15
16
17
18
/