Furuno CSH8LMK2 User guide

Furuno
Brand
Furuno
Model
CSH8LMK2
Type
User guide

Furuno CSH8LMK2

Furuno CSH8LMK2 is a powerful sonar designed to provide clear and detailed underwater images. It features advanced signal processing and noise reduction algorithms, which result in sharp and accurate target detection and excellent bottom tracking capabilities.

The sonar offers various user-adjustable settings, allowing you to optimize its performance based on specific fishing conditions and target species. You can fine-tune parameters such as TVG (Time Varied Gain), AGC (Automatic Gain Control), and 2nd ACG (Second Automatic Gain Control) to enhance target visibility and reduce clutter.

Furuno CSH8LMK2

Furuno CSH8LMK2 is a powerful sonar designed to provide clear and detailed underwater images. It features advanced signal processing and noise reduction algorithms, which result in sharp and accurate target detection and excellent bottom tracking capabilities.

The sonar offers various user-adjustable settings, allowing you to optimize its performance based on specific fishing conditions and target species. You can fine-tune parameters such as TVG (Time Varied Gain), AGC (Automatic Gain Control), and 2nd ACG (Second Automatic Gain Control) to enhance target visibility and reduce clutter.

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
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Furuno CSH8LMK2 User guide

Furuno
Brand
Furuno
Model
CSH8LMK2
Type
User guide

Furuno CSH8LMK2

Furuno CSH8LMK2 is a powerful sonar designed to provide clear and detailed underwater images. It features advanced signal processing and noise reduction algorithms, which result in sharp and accurate target detection and excellent bottom tracking capabilities.

The sonar offers various user-adjustable settings, allowing you to optimize its performance based on specific fishing conditions and target species. You can fine-tune parameters such as TVG (Time Varied Gain), AGC (Automatic Gain Control), and 2nd ACG (Second Automatic Gain Control) to enhance target visibility and reduce clutter.

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