User manual

SimradES70
3DecreasetheBottomBackstepleveltoalowervalue(makeitmorenegative).
Atypicalsettingwouldbeapproximately-60dB,butyouwillneedtoexperiment
tondthebestvaluefortheoperationalfrequencyandthecurrentbottomand
seaconditions.
TheES70willnowshowyouadepthvaluethatisshallowerthantheactualdepth.
4ObservethetruedepthontheOlexsystem.
Thedifferencebetweenthetwodepthsindicatetheheightoftheseagrass.
5ClickOKtosavethecurrentsettingsandclosethedialog.
Settingupthedepthalarms
ThisprocedureexplainshowtosetupdepthalarmsontheSimradES70.
ThedepthalarmsprovidedbytheSimradES70fullstherequirementsmadebythe
InternationalMaritimeorganization(IMO)fornavigationalpurposes.
Analarmwillbetriggeredif:
athecurrentdepthisshallower
thantheminimum alarmdepthyouhavechosen,or
bthecurrentdepthisdeeper
thanthemaximum alarmdepthyouhavechosen
Adedicatedfunctionallowsyoutodisablethedepthalarmsalltogether,whileanother
optionwillenableordisableanaudiblealarm.
Whenthealarmistriggered,theDepthAlarmseldchangescolour
tored.Thewarningisalsoprovidedasamessageinthemessaging
systemand-ifenabled-asanaudiosignal.
Toacknowledgethealarm,clicktheDepthAlarmseldtoopenthedialog.Thealarm
soundisthenautomaticallydisabled.To“restart”thealarm,clicktoenableUseAlarm
Sound.
→DepthAlarmsonpage237
Important
IfthebottomdetectorintheES70failstodetectthebottomwhenthedepthalarmis
enabled,orifthebottomdetectorisswitchedoff,thealarmwillbetriggeredindependent
ofthecurrentdepths.
Procedure
1ObservetheDepthAlarmseldontherightsideoftheTitleBar.
Double-clicktheDepthAlarmseldtoopentheDepthAlarmsdialog.
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