User manual

Operationalprocedures

Procedure

1ClicktheColourScaleicon.

ThisiconislocatedontheTitleBar.ItisusedtoopentheColourScale

informationpane.

→ColourScaleinformationpaneonpage137

2Movethecursortotheleftsideofthecolourscale.

Observethatthecursorchangesshapetoadualarrowline.

3Clickontheleftedgeofthecolourscale,keepthemousebuttondepressed,anddrag

theedgetowardsright.

4Observethattheweakestcoloursareremovedfromthecolourscale,andthusalso

theweakestechoesfromtheechogrampresentation.

5Releasethemousebutton.

6Inordertorestoretheweakestcolours,clickontheleftedgeofthecurrentcolour

scale,anddragtowardsleft.

Echogramprocedures

TheseproceduresexplainthevariousparameterscontrollingtheES70echogram.

Topics

•Changingthe‘ping’parametersonpage61

•Selectingechogramtypeonpage62

•Addinghorizontalmarkerstotheechogramonpage64

•Addingverticalmarkersandannotationstotheechogramonpage65

•SelectingTVGgainintheEchogramdialogonpage66

•Removinginterferenceandvessel'sownnoiseusingthe‘ping-ping’lteronpage68

•Removinginterferenceusingsequentialpingingonpage68

•Makingiteasiertoseethebottomonpage69

Changingthe‘ping’parameters

Thisprocedureexplainshowtocontrolhowoftenthe

ES70transmitsacousticenergyintothewater.This

isnormallyreferredtoas‘pinging’.

The“pingrate”istheparameterthatcontrolshow

oftentheechosoundershalltransmitacousticenergy

(a“ping”)intothewater.

IfyouobserveapelagicechoontheES70,anditseemstofollowthebottomcontour,it

mayinfactbeafalseechofromtheprevioustransmission(“ping”).Theonlywayto

removethisfalseechoistoreducethepingrate.Ifyoudothis,alltheechoesfromthe

previouspingwillhavedisappearedbeforeyoutransmitthenext.Onoldpaperbased

338106/C