Navman Fish 4432 Installation And Operation Manual

Navman Fish 4432 Installation And Operation Manual Manual pdf 24 page image

5-4 Sonar 83/200 displayTo show the Sonar 83/200 display, press DISPand select Sonar Tab, select Sonar 83/200and press ENT.This shows a split display, with the 83 kHz sonarhistory on the left side and the 200 kHz sonarhistory on the right side. Gain settings can beset independently for each frequency. Rangesettings apply to both sections of the display.To change items, press MENU until theOptions menu is shown. Gain is explainedin section 4-4 Gain.Range is explained in section 4-5 Range.A-scope is explained in section 5-5 SonarA-Scope display.Data header is explained in section 5-1Sonar display.Split ratio is explained in section 5-2Sonar Zoom display.5-3 Sonar Bottom displayTo show the Sonar Bottom display, press DISPand select Sonar Tab, select Sonar Bottomand press ENT.This shows a split display, with the sonar historyon the right side and the zoom section on theleft. The bottom signal is shown as a flat tracein the centre of the zoom section.Showing the bottom as a flat trace can makeit easy to compare the echo strengths shownin the bottom signals. This can help to identifythe type of bottom and objects close to thebottom.The zoom bar can only indicate the zoomrange. It cannot indicate the zoom offset asthis changes for each sounding displayed onthe display.The zoom bar is fixed in the middle of thedisplay.See section 4-5 Range, for information aboutadjusting the Zoom Range and Zoom Offset.To change items, press MENU until theOptions menu is shown.Gain is explained in section 4-4 Gain.Range is explained in section 4-5 Range.A-scope is explained in section 5-5 SonarA-Scope display.Data header is explained in section 5-1Sonar display.Bottom lock and Split ratio areexplained in section 5-2 Sonar Zoom display.5-5 Sonar A-Scope displayThe user can define the level of the weakestand strongest echoes to be shown on the sonardisplays, by using the Gain and Thresholdsettings. See section 4-4 Gain, for moreinformation.The strength of an echo at a particular depthis shown by the length of the horizontal line atthat depth. A strong echo produces a long linewhereas a weak echo produces a short line.To change items, press MENU until theOptions menu is shown.Gain is explained in section 4-4 Gain.Range is explained in section 4-5 Range.Data header is explained in section 5-1Sonar display.Split ratio is explained in section 5-2Sonar Zoom display.Divider linebetween sonarhistory andA-scopeGain setting(strongest echofor display)Gain threshold(weakest echo fordisplay)To show the Sonar A-Scope display, pressDISP and select Sonar Tab, select SonarA-Scope and press ENT.Use this to analyse the sonar data in detail andoptimize the Gain settings.FISH 4432/4433 Installation and Operation Manual 26NAVMAN