User manual EAGLE Z 7200 LIQUID CRYSTAL GRAPH INSTALLATION INSTRUCTIONS

[. . . ] Z-7200 LIQUID CRYSTAL GRAPH INSTALLATION AND OPERATION MANUAL PDF compression, OCR, web-optimization with CVISION's PdfCompressor LITHO IN U. S. A. 988-0106-09 THE ALL AMERICAN SONAR TNSLE TABLE OF CONTENTS INTRODUCTION INSTALLATION POWER CONNECTIONS TRANSDUCER KEYBOAJRD BASICS DISPLAYINTERPRETATION OPERATION OFF AUTO AUrOMA11CSENSFTIVIry SPEED 1 1 cal energyfromthe transrriitterinto ultrasonic soundwaves. When areturn echo strikes thetransducer, it converts the sound waves into electrical energywhich is received and displayed by the sonar unit. 2 3 4 6 7 7 $ . TRANSOM MOUNT -Amethod ofmounting transducers orothersensors onthetransomof the boat. UPPER/LOWER LIMIT-Thesearethe rangelimitsdisplayedonthesonar screen or paper. [. . . ] Remember, pressing the AUTO key turns both automatic sensitivity and auto ranging functionson and off atthesame time. 8 29 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Brush usually lies on the bottom and shows up as clumpsrising above the bottom signal. Brush signals look similar to large rocks, however their signal is not as strongas rock. a FISHSIGNALS The signals displayed on the Z-7200 by fish are Identified by variousshaped markings Incertain patterns, as opposedtorandommarks createdby noise. Orthesolid, continuous markings made bythebottom. Typically, fish are identified by acharacteristic archthat separates them from their stationary surroundings. Thedistanceto afish whenit moves intothesonar'sconeof sound is shown as "A" below. When thefish hasmoved intothe centerof the cone, the distance toitwill be shorter, "B". Asitmovesoutofthecone, the distancewill increase again as shown in "C". 2 di 4 a 69' SENSITIVITY: TOO LITrLE SENSITIVITY: ADJUSTED PROPERLY AUTO SENSITIVITY OPERATION When theZ-7200 isintheautomaticmode, the receiver's sensitivity automatically adjusts to the surrounding conditions. The microcomputerplaces it at a level slightlyabovethe minimum required to pick up the bottom signal. Changing the sensitivity level whilethe Z-7200 is in theautomatic ispossible. Thismaybedesirable ifthesensitivity level isnotenough mode toshowfish or othersmall detail. TheZ-7200willincrease thesensitivity to pick up the bottom signal, then add in the level you programmed. If desired, you can add sensitivity up to the maximum. Toadjustthesensitivitywhilethe Z-7200 is in theautomaticmode, simplypresseithertheright arrow key> toincrease it. If the value goesbelow the minimum required tokeepthe bottomsignal, theZ-7200's audibletonewillsound an alert. As you press the arrowkey, the sensitivity barwill move right or left, accordingto thesensitivity level chosen. 9 28 PDF compression, OCR, web-optimization with CVISION's PdfCompressor CHARTSPEED At power on, the chart speed scrolls at a pre-determined speed. For a higherspeed, press and holdtheFAST key in theCHART sectionof thekeyboard. Pressing either of thesekeys causes the sensitivity bar at the top of the displayto changeto a dashed line. Theletters "CHT" will also appearin a window nearthetop ofthedisplay. If you pressand hold the FAST keyforexample, thebar will startmovingtothe right. ByholdingeithertheFAST orSLOW keys, the display can be speeded up or slowed down. When the horizontal bar reaches thefar right side ofthescreen, the chart speed is at its maximum value. The Z7200 will sound atone indicating maximum chart speed. La I The20degree transducer isalmostalwaysthebestto use infresh water, the8degree mostly in salt water. In adeepwaterenvironment, (300 feet - fresh water, 100 feet - salt water) the narrow cone angle Is more desirable. Sincethesoundenergy isconcentrated inasmallerarea, itcan penetrate to muchdeeper depths, Both 8degreeand 20 degree transducers give accuratebottom readings, even thoughthe bottomsignal is muchwider on the 20 degree model. The rest ofthe signal tells you whetheryouare over rocks, mud, etc. Paint transducers on sait water boats with a thin coat of antifoulantpaintto prevent organisms fromgrowing. [. . . ] When the Z-7200 is first turned on, the depth Is displayed with thesmall numbers. To change to a different size, press both arrow keys in the RANGE sectionat the same time. Then press the up or down arrow keys in the RANGE sectionuntil menu 6 displays. Next press the up or down arrows in the ALARM section ofthe keyboard to select the desired digital number size. [. . . ]