Simrad TV80 - Colour Scale; Ping-Ping Filter Function

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ColourScale
ThecolourscalesusedbytheTV80aredesignedtoreectthehowstrongtheechoesare.
Theechostrengthismeasuredindecibels(dB).Inthebasiccolourscalewith12colours,
eachcolourrepresentsa3dBstep.Thismeansthattheentirescalecovers36dB.
Howtoopen
ThisfunctionisopenedfromtheActivemenu.
Description
TheColourScalesettingscontrolthesensitivity.
Ping-PingFilterfunction
ThePing-PingFilteranalysesthehistoricalinformationfrompreviousconsecutivepingsin
ordertoremoveunwantednoiseandinterferencefromtheTV80presentation.
Howtoopen
ThisfunctionisopenedfromtheActivemenu.
Description
ThePing-PingFilteroffersthreedifferentstrengths.Theechoinformationfromtwo,four
oreighttransmissions("pings")areaveragedtodistinguishrealechoesfromnoiseand
interference.
Details
Off
Thelterisdisabled.
Thehistoricalinformationfromprevioustransmissions("pings")arenotusedto
removenoiseandunwantedechoes.
Weak
SelectWeaktoallowtheltertocomparetheechoesfromthelatesttwopings.
Forthecurrentechotobeshown,itmustbepresentinbothofthesepings.
Functionsanddialogboxes