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. [. . . ] 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. Press theleftarrow key c to decrease thesensitivity. If the value goesbelow the minimum required tokeepthe bottomsignal, theZ-7200's audibletonewillsound an alert. The same is trueifyoutry to go abovethe maximum level. 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. When thescroll speed reachesthedesired speed, release theFASTkey. Toslowthedisplay, press and holdtheSLOW key. 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. Thissignifies that thechart speed is increasing. 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. Thisis because you are seeing more of the bottom. Remember, theshallowedge ofthesignal shows you thetrue depth. [. . . ] This interferes withfishsignalsand other targets. These markings are Surface Clutter and are caused by wave action, boat wakes, baitfish, temperature inversions, and other reasons. :___bsITlvIT -- o T Pr fN3f1IVl3' MENU #4- DIGITAL H kF1 ___ a )FF UseSurfaceClarityControl (8CC) to reduce or eliminate surfaceclutter. 8CC varies thegainof the receiver between each transmit pulse, while the receiveris "listening" forthe return echoes. Thegain is the lowest for echoes near the surface. [. . . ]