Installation manual

SimradES70
Transducercablesplicing
Ifyouneedtocutorlengthenthetransducercable,youmustspliceitcorrectly.The
cablebetweenthejunctionboxandthetransceivermustthenbesuppliedbySimrad,
andthismustbethesametypeasusedonthetransducer(s).Tosplicethecable,usea
metaljunctionboxwithEMCcableglandsandaterminalblock.Theterminalblock
mustprovidesolidfasteningofthecableendsaswellassufcientinsulationbetween
thewires.Werecommendthatthecablescreenisconnectedtothejunctionboxchassis
usingtheEMCcableglands,butifyoudothis,thejunctionboxchassism
u s t n o t be
connectedtovessel’sground.
Note
D o n o t solderthewirestogetherwithonlyelectricaltapeforinsulation.Thiswillresult
inelectricalnoiseandreducedoperationalperformance.
D
o n o t connectthecablescreentothevessel’ sground.
Ordernumbers
ThecableglandsdescribedinthischapterareavailableaskitsfromSimrad.Observethe
followingordernumbers.
HulltypeItem
Ordernumber
SteelCableglandkit,steel,8to15mmcables
499–037763
SteelCableglandkit,steel,17to18,5mmcables
305609
Wood/GRPCableglandkit,bronze
119-038200
SmallCableglandkit,plastic
599-202182
Steelconduit
Whyusesteelconduits?
Itisstronglyrecommendedtolayasteelconduitfromthetransducer’scablegland
totheechosoundertransceiver,andtopullthetransducercablethroughthisconduit.
Thereareseveralreasonsforthis.
•Itwillmakeiteasieratalaterstagetoreplacethetransducer.
•Noiseandinterferencefromotherelectricalequipmentisgreatlyreduced.
•Theriskofoodingisgreatlyreducedifthepipeisterminateabovethewaterline.
WithasteelconduittheinstallationwillsatisfytheEUregulationsforEMCinterference.
Withoutasteelconduit,thereisariskofreducedechosounderperformance.
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