User manual EAGLE MAGNA II OPERATION INSTRUCTION

[. . . ] p Magna II and Magna II Plus INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U. S. A. 988-0106-56 EAGI 1TM PDF compression, OCR, web-optimization with CVISION's PdfCompressor INTRODUCTION INSTALLATION POWER CONNECTIONS SPEEDTrEMPERATURE SENSOR KEYBOARD BASICS DISPLAY MENUS OPERATION AUTOMATIC RANGE ZOOM- Automatic Operation ZOOM- Manuai Operation SENSmVITY GRAYLINE® FISH ID CHARTSPEED DISPLAY MODE ALARMS FISHALARM DEPTHALARM LAMP FEET/METER DISPLAY CONTRAST ASP (Advanced Signal Processing) SIDESCAN SIDESCAN RANGE . TABLE OF CONTENTS Copyright © 1991, 1990 Eagle Electronics All rights reserved. 1 1 2 3 4 5 5 6 6 6 7 8 9 10 11 12 14 14 15 16 16 16 17 - Is 18 19 19 20 21 SIDESCAN-ALARM MENU SUMMARY TRANSDUCERS AND CONE ANGLES SIGNALINTERPRETATION FISHARCHES WATER TEMPERATURE ANDTHERMOCUNES SURVEYINGALAKE BAITFISH SONAR TROUBLESHOOTING 22 23 25 25 26 All featuresand specifications subjectto Changewithout notice. All screens in this manual are simulated. PDF compression, OCR, web-optimization with CVISION's PdfCompressor 4. Theboat must be moving ataslowtrollingspeedto seefisharches. lithe boat is motionless, fish stay In the cone, showingon the displayas straighthorizontal lines. INTRODUCTION ELECTRICAL NOISE Amajorcauseofsonarproblems iselectricalnoise. [. . . ] It is adjustable whenthe unit is inthemanual mode, however. To do so, first puttheunitin PDF compression, OCR, web-optimization with CVISION's PdfCompressor FISH ARCHES The Magna II and II Plus havethefollowingranges: 10, 20, 40, 60, 120, 240, 480, and 900 feet. and Fish arches are created when the cone of sound passesover a fish. The distance to a fish when the cone first strikes it is shown as "A" below. When the center of the cone strikes the fish, the distance is shorter as shown "B". As the cone leaves the fish, the distance increasesagain as shown in "C". BOATS DIRECTION OF TRAVEL 5, 10, 20, 40, 60, 100, 200, and 300 meters. ZOOM The zoomfeatureenlarges all echoes on thescreen. Ifthe unit is in the automatic mode, it tracks the bottom signal, always keeping it near the bottom of the screen. This lets you see small detail, at the same time enlargingall echoes that appearonthescreen. Theunitdoesn'ttrackthe bottom in themanual mode, and the adjustments are slightlydifferent. Zoom - AutomaticOperation To zoom the display, first pressthe MENU keyuntil the RANGE/ZOOM thezoommode. A new menu immediately appearsas shown ontheright. Zoomsize is thedistancebetween theupper limit andthelowerlimit. The upperlimit showsatthetopleftcornerofthe menu appears. This switches the unitinto 37jFT act RANGE I A a B Jr C Whenthe Fish l. D. mode is off, thedepth of the waterwill affect thesize and shape of the fish arch due to the cone angle diameter. For example, if the cone passes over a fish in shallow water, the signal displayedon theMagna II may not arch at all. This is due to thenarrow cone diameter and the resolution limitations of thedisplay. 22 screen. The lower limit is in the bottom leftcorner. For example, if the upper limit is 40 feet and thelower limit is 70 feet, thezoomwindowsize is30 feet. Theword'TRACK" appearsinthis menu whenyoufirst activate the zoom. This means the Magna II is tracking the bottom in a zoom window, always keeping it on thedisplay. Presstheup arrow keyto decrease zoom size, pressthedown arrow the to increase the zoom size. [. . . ] The shallow and deep alarm settings are displayed beneath the digital depth. No chart showson this screen. [60. 8] I SHAL ALM L F DEPTH FT DEPTH ALARMS OFT OFT DEEP ALM Thedepthalarmsaretriggered onlybythebottom signal. Nootherechoes will activatethese alarms. Thedepth alarms consistofa shallow anddeep alarm. [. . . ]