Z-7200

LIQUID CRYSTAL GRAPH
INSTALLATION AND OPERATION MANUAL
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LITHO IN U.S.A.

988-0106-09

THE ALL AMERICAN SONAR

TABLE OF CONTENTS
INTRODUCTION INSTALLATION POWER CONNECTIONS TRANSDUCER KEYBOAJRD BASICS DISPLAYINTERPRETATION OPERATION OFF AUTO AUrOMA11CSENSFTIVIry SPEED
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
TRANSOM MOUNT -Amethod ofmounting transducers orothersensors onthetransomof the boat. UPPER/LOWER LIMIT-Thesearethe rangelimitsdisplayedonthesonar screen or paper. Theupperlimit is shown at thetop of the display, while thelower limit isatthebottom. For example, a20 to 30 foot rangehas20 feet as the upperlimit arid 30 feet as thelowerlimit.
VIDEOGRAPH -A sonar unitthat usesa CRT or television type display.
RANGE LOWER LIMIT AUTO 8011CM TRACKING GRAYLINE DIGITAL ZONEALARM LIGHT COMMAND MENU #1 SPEAKERVOLUME MENU #2- DISCRIMINATION MENU #3 - SURFACECLARITYCONTROL (5CC) MENU #4 - DIGITAL MENU #5 - DIGITALAVERAGE MENU #6 - DIGITALSIZE MENU #7 - DIGITALTENTHS MENU #8-GRAYLINESET MENU #9 - GRAYLINECHECKS OR LINES MENU #10-ZONEALARMDISPLAYLOCK MENU #11 -PULSEWIDTH MENU #12 - FEET, FATHOMS, METERS
WINDOW A segmentof the depth range. For example, an upperlimit of 20 feet and a lowerlimit of 50 feet creates a 30 foot window.
ZOOM- A feature that enlarges targetson thedisplay.

MENU#13-SCALES

TRANSDUCERSANDCONE ANGLES SIGNAL INTERPRETATION ASH SIGNALS WATER TEMP. ANDTHERMOCUNES SURVEYINGA LAKE BAITFISH HOWTO OBTAIN SERVICE SCHEMATIC ANDPARTS LIST SPARE PARTS SPECIFICATIONS GLOSSARY
REMOTE - An intelligent "repeater" unitthat receives depth information from another sonar unit. Aremote doesn'thavea transmitter or receiver. However, It does have It's own features that are adjustable and operate separately from the master. RESOLUTION -The abilityofa sonar unitto separate targets from each other or thebottom. RMS A standard rating of transmitter power output. SCALE -Themarkings on a sonar unit'sdisplay. To determine the depth
INTRODUCTION When the Z-7200 Liquid Crystal Graph (LCG) is turned on, it will and automaticallyfind displaythebottom signal and othertargets. As the bottom depth changes, theZ-7200 will automaticallychange the range and sensitivity to keepthe bottom signal on thedisplay. Ifdesired, the only key that needs to betouched is the ON key. However, disabling the automaticmode allows manualadlustment oftheZ-7200.
ofatarget,simplycompare thetarget'slocation.to thelocationofthescale markers on the display.
SECOND ECHO -Anotherechothat registers at roughlytwice the depth of a target echo. This is caused by the sound waves reflecting off the travelling tothebottomagain, and bottom,strikingthesurface ofthewater, returing to the surface. SECOND FUNCTION KEY - A button that convertsthe functionsof the primarykeys on the keyboard. Sonar unitswith a secondfunction key have other keys with two functions. You can switch functionswith the second functionkey. SENSITIVITY - The ability of a sonar unit's receiver to display targets. Increasing the sensitivity allows weaker targets to be displayed. Also
The Z-7200 is nitrogen filled and sealed for completewaterproof for protection. Theliquid crystal display and keyboardare backlighted use at night. PIus, ft'scovered by a full one year warranty. This easy includes all parts and laborfor one yearfrom the date of purchase. To getstarted with your Z-7200,firstreadtheinstallation section. This iswhereitall begins, and Improperinstallation can cause problemsdown theroad. After you've read these instructions and Installed your Z-7200, read the rest of this manual in detail. The moreyou know whenyou get to the water,the more your Z-7200 will do for you.
called"gain". SCROLLSPEED - See CHART SPEED.
SHOOT-THROUGH-HULL - A transducer installation which allows the sonarsignals to passthroughafiberglass hull withoutcuttinga holein the hull. SUPPRESSION -Amethod used In some sonar unltsto eliminate interference or noise. SURFACE CLARITY CONTROL - Reduces or eliminates undesirable signals displayed nearthe water's surface. Also called "5CC".

INSTALLATION

Mounting
Install the Z-7200 in any convenient location,providedthere is clearance whentiltedforthe bestviewing angle. Holesinthe bracket base allow wood screw or through bolt mounting. Attach the bracket to aluminumpanelswithsheet metal screws. Placea pieceof plywood onthe back of thin fiberglass panels to secure the mountinghardware. Make certain there is enough room behind the unit to attach the power and transducercables.

THERMOCUNE -Alayerofwatercaused bythemeeting ofwarm and cool ofwater. Thethermocline providesthetemperature mostfishprefer. layers
TRANSDUCER -Theelement ofa sonar system that convertsthe electri-
You can routethepowerand transducer cables throughthe7/8" holeInthebaseofthegimbal bracket. Thenpassthem throughaholein the mounting surface. The smallest holethat will pass one connector through is 3/4H Passthetransducer connectorand cableupthroughthe holeand gimbalbracket. Then push the powercablewire downthrough the bracketand dash. Afterroutingthe cables, fill the holewith silicone rubberadhesive (RN). Offsetthe brackettocoverthemajorityofthehole.
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of the bottom. In otherwords, youcantell If the bottom is softorhard. A
Power Connections The Z-7200operates from a 12 volt battery system. Attach the cable to an accessory or power buss. If you have problems with power electrical interference, then attach the cabledirectlyto the battery. Electrical interference shows as random dots on the display whenever the boat's engine or an accessory is on. Thepower cablehastwowires, red is the positive leadand black is negative or ground. Attachthe in-linefuseholdertothered wire on the powercablewith thecrimp connector. The other end ofthe fuse holder attaches to the batteryor accessory buss. Ifthecable is not longenough, spliceordinary#18 gaugewire onto it. Be certain that thefuseholderis asclosetothepowersource (batteryor accessory buss) as possible. This protectsthe powercableand your Z-7200intheevent ofa short. Usea3amp fuse. TheZ-7200 hasreversepolarity protection. Nodamage will occur ifthewiresare reversed. (However,theunitwill notwork until thewires are hardbottomreturns astrongsignal causing awidegrayline. Asoft, muddy or weedy bottom returns a weaker signal which is emphasized with a narrowgray line.
IN-DASH -A sonar unitinstalledthroughaholeintheboat'sdash. Usually, theface ofthesonar is flushor nearly so with the dash. kl-Iz - Kilohertz. A measurementoffrequency. YourEaglesonaroperates at 192 Kilohertz. (192,000 cyclespersecond).
LCD - Liquid crystal display. The screen or display of a Liquid Crystal Graphsonar instrument. LCG - Liquid Crystal Graph.
NOISE - Any undesired signal. Electrical noise is caused by engine ignitions systems, radios, etc. Acoustic noiseiscaused bythevibrationof the engine or other mechanical sources. It appears on thedisplay as random dots or lines. OPERATING FREQUENCY- Frequency that the sonar unit'stransmitter and receiverare tuned to. OUTPUT POWER -Theamplitude ofelectrical energytransmitted fromthe sonar unit to the transducer. Measured in watts, the higher the output power, thedeepera sonar unitcanread, and moredetailcan bedisplayed. PEAK-TO-PEAK - A measurementof the transmitterspoweroutput. PIXEL - Thesmall dots or squares on a liquid crystal displayor CRT.

attachedcorrectly.)

PIXELDENSITY -Thenumber of pixels persquareInch ona liquidcrystal display. Thebest resolution Is obtained whena highnumberofpixelsare

in thevertical.

PULSE LENGTH - The amount of time that the sonar transmits. This is measured in micro-seconds. Theshorterthe pulselength, the betterthe resolution. For example, a30 micro-second pulselength is equal to aone inch resolution.
a 60 foot range has zero fortheupperlimit and 60 forthelower limit.
RANGE-The sectionofwatershown on the sonardisplay. For example,
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GLOSSARY ANCHOR WATCH -Asetting ofthesonarunit'salarm.Thealarm activates when the boat drifts into shallower or deeper water than the alarm set points. BACK-LIGHTED - A display or keyboard illuminated from behind by a light. Back-lighted displaysand keyboardsareessentialwhefl nightfishing or navigating. CAVITATION -Airbubbles created by thehighspeed movement of aboat ortransducerthroughwater.
NOISE Minimize electrical noise by routing the power cable away from otherpossible sourcesof electrical interference. Oneofthe largest noise generators is the engine's wiring harnessthat runsfromthe engine tothe instrument panel. Thisharness usually containsawireforthetachometer which radiates RF (radio frequency) energy. For best results, keep the powerand transducer cables away from the engine wiring. Also, bilge pump wiring can sometimes radiate noise so try to keep the 7-7200's cables away from those wires.
CHART SPEED -(1) The speed of the chart paper on a paper graph recorder. (2) The speed ofanimage across the screen of a liquid crystal graph. (Also called "scroll speed"). CONE ANGLE - Width of the transducer's cone of sound. Eagle has transducers with cone angles from 8 to 45 degrees to suit the varying

needs of fishermen.

VHF radio antenna cables radiate HF energy at higher power levelsthan eventheengine's wiringharness. It is importanttokeeptheZ7200's power and transducer cables as far away as possible from VHF

radio cables.

CRT - Abbreviation for Cathode Ray Tube. SeeVideo Graph.
DEFINITION - Theabilityof asonar unit's displayto show detail. A high resolution displaycanshow moredetail than a low resolution one.
This noise is not electrical, but rather mechanically induced noisefrom the transducer. Stoptheboat, putthe engine in neutral, and increase the Rpm. If the noisedoes not increase on the display, then it is cavitation. Usually, air bubbles passing over the face of the transducer create acousticnoise.Thefasteraboattravels,themoreairbubbles increase and generate noise on the display. To eliminate this problem, read the transducerowner's manualfor proper mountingtechniques.

Note: The Z-7200 has many more features than the ones justdiscussed. Fora detailed look at the Z-7200's features and operation instructions, readthe Operation sectionof this manual.
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ity bar.

DISPLAY INTERPRETATION
to bottom. Layers of differenttemperatures form, and thejunction of a
Thetemperature ofwaterin the lake is seldom constant from top
Now let's look at the display. we'llturn ontheZ-7200by pressFirst, ingtheON key. Thelightswillflashfor sixseconds.The chartisnow scrolling the return echoes acrossthe screen and the digital is searching for the bottomdepth. It's flashing 0 because it hasn'tfound the bottomyet. Once it finds the bottom,the depth is displayed.
warmand coollayerofwateris athermocline. Thedepth and thickness of thethermocline varywiththeseasonortime ofday. Indeeplakesthere can may be two or more at differentdepths. Thermoclines are Importantto fishermen because they are areas where fish are active. Manytimes bait fish will beabovethethermocline whilelargergame fishwill suspend in or Just belowit. The Z-7200 can detectthis invisible layer In the water, but the sensitivity will probablyhave to be turned up to seeit.
the bottom at 49 feet. The range is
Here the Z-7200 has found
A knowledge ofthewatertemperaturesvarious fishprefer, and in whichthey usually remain, helpsyou get the most from your Z-7200.
SURVEYING A LAKE The mostsuccessful anglers on anybodyof waterare thosewho fish itdayafterdayandyearafteryear. Eventually,theylearn the hot spots that producefish consistently. Theydiscoverthroughexperience where. and atwhat depth,theycan expecttofindthefishtheywant anyseason. at And they realize that theseproductive areas change throughouttheyear dependingon waterlevel, temperature, food, and otherfactors.
zero to 60 feet. It automatically choosesa lower limit that places the bottom signal nearthebottom of the

display.

The bar at thetopofthe disis the sensitivity bar. It shows the play sensitivity in use. The bar extends from left to right. A very short bar
indicates minimum sensitivity. Setting the sensitivity to maximum causes the barto run completelyacrossthetopofthedisplay.
With the Z-7200, anyone caneliminate guesswork and concentrateontheareas wherefisharelikelytobe. Even if it'sthefirsttime on the
Theword AUTO indicates the Z-7200 is in the automatic mode. Thetopline ofthe displayis alwaysa dashed line. It movesfrom As thechart speedincreases or decreases, the dashed line changesspeed accordingly.Theword 'STOP" appearswhenthe chart is stopped. rightto left, showing thechartis moving. The range is both an upper limit and a lower limit at thetopand bottomofthedisplay, respectively. Inthis example, therangeiso -60feet. Scale markers printed on both sides of the display help deterrnine the actualdepth. For best results, read the Qperation sectionof this manual. It explains in detail all of the functions that are in this section, plus other

To placethe Z-7200 in manual mode, press theAUTO key once. Thisturnsauto sensitivity off. ThewordAUTOatthetopofthedisplaywill disappear, signifying that the Z-7200 is In the manual mode. To increase thesensitivity, press and holdthe right arrow key until thesensitivity is at thedesired level. Theleftarrow decreasessensitivity inthesame manner. Noticehowthesensitivity bar moves as you change settings. When you press the right arrowkey, thebar moves totheright, indicatingan increase insensitivity. Pressingtheleftarrowkey movesthe bartotheleft,showing the sensitivity hasdecreased accordingly. You'll also seethe change on

thedisplay.

Very small fish probablywill not arch atall. Medium sized fish will showa partial arch, or a shape similar toan arch if they're indeep water. Large fish will arch, but turn the sensitivity up in deeper waterto seethe arch. Because of water conditions, suh as heavy surface clutter, thermoclines, etc., the sensitivity sometimes cannotbe increased enoughto get fish arches. Oneofthe bestwaysto get fish arches isto expand or "zoom" a segment ofthewater. Forexample, 40to6ofeet.Thesmaller segment, the thebetterthe screen resolution will be. Then, turnupthesensitivity as high as possible withoutgettingtoo much noise on thescreen. In mediumto deepwater,this methodshouldwork to display fish arches.
WATER TEMPERATURE AND THERMOCLINES Water temperature has an important-if not controlling-influence upontheactivitiesofall fish. Fishare cold blooded and their bodies are always the temperature of the surrounding water. During the winter, colderwaterslowsdown their metabolism. Atthis time,theyneed about a fourthas muchfood asthey consume in the summer.
Onthe nextpage, the photo ontheleftshows agraphwith toolittle sensitivity. On the right, the graph has a proper sensitivity setting. Afish alongwith highersurface clutterare nowvisible, and thebottom signal has widened.
When the horizontal bar reaches the far right hand side of the screen, the sensitivity level isat maximum. Withhigh sensitivity settings, a second bottomecho (second echo) mayappear. This Is normal. It's caused by the returning signal reflecting offthesurface ofthewater. Then it makes a second tripto the bottomand back again.
TotumAutoSensitivity backon, press theAUTO key. Remember, pressing the AUTO key turns both automatic sensitivity and auto ranging functionson and off atthesame time.
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.
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. The reason for this Is shown below. 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".

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. 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.
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. The bar represents thechart speed. If you pressand hold the FAST keyforexample, thebar will startmovingtothe right. Thissignifies that thechart speed is increasing. There are 10steps ofchart speed. 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.
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. The rest ofthe signal tells you whetheryouare over rocks, mud, etc.

Tousethisfeature,firstmake certain the Z-7200is in theautomatic mode. If it isn't, press the AUTO key. Next, choose azoomwindow. For example, lets usea 20 foot zoom window. Thismeans that theZ-7200 will keep theupperlimit20feet abovethelowerlimit. Automatically placingthe bottomsignal in this window, theZ-7200 tracksitas it moves shallower or deeper. Press the ZOOM key. The zoom window size appears on the uppercenter portionof thedisplayfor afewseconds. If youdon't have a 20foot window,press either theupor down arrowsin the RANGEsection until the upperlimit is20feetshallowerthan thelower limit. The2-7200 will choosean upperand lowerlimit thatwill placethebottomsignal in the 20 foot window. Thebottomwill always be insidethiswindow. Ifthe segment size is 40feet or greater, thewindowlimitswill end inzero (10,20,30,etc.). Otherwisethe limits are in one foot increments. To exitfromthisfunction, press theZOOM key.
MENU #12 - FEET, FATHOMS, or METERS
The2-7200 candisplaythe depth in either feet, fathoms, or meters. Atfirst,the displayreads in feet. To change to fathomsor meters, press both arrow keys in the RANGE sectionat the same time. Using the same arrow keys, scroll through the menus until menu #12 appears. Usethe arrow keys inthe ALARM section to selectfeet, fathomsor meters. Press theAUTOkey to activate the selection.

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MENU #13 - SCALES When the Z-7200 is turned on, the upper and lowerrangelimits are automatically displayedon the right side of the display. To turn them off, press both arrow keys in the RANGE section at the same time. Using the same arrow keys, scroll through the menus until menu #13 appears. Usethearrowkeys in theALARM sectionto select ON or OFF. Press the AUTO key to activatethe selection.

GRAYLINE

The GRAYLINE functionstells the relative strength of signals displayed on the screen. It also gives cluesto the compositionof the bottom. In other words, you cantell Ifthebottom is soft or hard. A hard bottom returns a strong signal causing a wide gray line. A soft, muddyor weedybottom returns a weaker signal which is emphasized with a narrow gray line. Ifyou have twosignals of equal size, onewith gray and theother without, then the target with gray Is the stronger signal. This is helps distinguish weeds from trees on the bottom, or fish from structure. When the Z-7200 is first turned on, the GRAYLINE function is automaticallyon. Normally, it doesn't require adjustment. However, should you desire to change theGRAYLINE level, see menu #8 in the

COMMAND section,

MENU #11 - PULSE WIDTH There isarelationship be TC tween resolution and transmitter pulse width. Resolution, In this case, Is the ability of a sonar to 1: Ci.R separatetargets. The shorterthe PULSE 2 pulsewidth,the betterthesonar's t,tj 1 L abilityto separate targets. However, in deep water, the shorter I6 the pulse width, the less likely a return echo will be received. In , SHflRT fact, the Z-7200 automatically increases the pulse width as the 6 range increases. In shallowwater, a narrow pulsewidth is beneficial, since the probability ofecho detection is high. For even better FOF HO target separation, the Z-7200 PRESS gives youthecapabilityto narrow 414 the pulse width. Combine that ,Ls withatwentyfootzoomand theZ7200displays detailfarbetterthan otherliquid crystal graphs. To change the pulsewidth, press both arrow keys inthe RANGE sectionat thesame time. Using the same arrow keys, scroll throughthe menus until menu #10 appears. Use the arrow keys in theALARMsectionto changethepulsefromnormal toshortor backagain. Press the AUTO key to activate the selection.

GRAYLINE: ON

GRAYLINE: OFF

DIGITAL

Built;nsidetheZ-7200 isa complete digital sonar. It automatically discriminates betweenthevalidbottomechoes and falseechoesfrom fish, or other signals. The digital display will show only the thermoclines, bottomdepth. Use it anytime, regardless of the mode theZ-7200 Is in.
At poweron, thedigitalwill flash"0" until it has"lockedon" tothe bottom signal. Once it hasacquiredthe botlomdepth, it will displaythe depth in the lower left ofthe display.
shallower than 100 feet. See the COMMANDsectionfor details.
Thedigitalcandisplaythebottomdepthlntenths ofafootinwater
There are two different sizesofthe digital depth display. Theycan beeasilychangedwith a menu selection. Seethe COMMAND sectionfor details.
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To get themaximum performance outof your digital sonar, stop the chart by pressing both arrowkeys at thesame time in the keyboard's chart section. ThisturnstheZ-7200 intoa digital sonar onlyand allowsit to bettertrackthe bottomsignal. Agood reason to usethedigital isifyou are going to travel at high speed and you just want to know the bottom depth. Stop the chart, then changetothelarge digital number size. This will give both the fastest possible depth updates plus an easy-to-read

MENU#10-ZONEALARMDISPLAY

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thealarm bar on continuously. When theZ-7200 isturnedon, thezonealarm bar is on onlywhen the zonealarm Is ".
This menu allows you to turn
If you wish to turn the digital display off, see the COMMAND sectionfor details.

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ZONEALARM To settheZoneAlarm, press the SHALLOWSET key in theZONE ALARM sectionofthe keyboard. Theletters"ZR appear in the lower left corner of thescreen. A vertical bar also displayson the left side of the screen forsixseconds. This istheZoneAlarm's"window."Anyechothat appears between the top and bottom of this bar will sound the alarm. Adjust both the shallow and deep ends of this bar to makea smaller or largeralarm "window." To adjusttheshallow(top) alarm, press theSHALLOWSET key. ThealarmbardisplayswithasmallarrowpolntingtothetopofthebarThis signifies that the top or shallow portionof the bar is ready foradjustment. Press Thenpresstheuparrowkeytomovethetopofthealarmwindowup. thedownarrow keyto move thetopofthezonedeeper. Sixsecondsafter theadjustments are made, thealarm bar disappears.
Set the bottom of the zone in the same manner usingthe DEEP SET key. Press the DEEP SET key. Thealarm bardisplays with thesmall arrow pointingto thebottom of the bar. Thenpressthe up arrow key to make the bottompart ofthewindowmoveshallower. Oryoucanpress the down arrow keyto move the bottom ofthe windowdeeper. Releasethe keys and the barwill remain on the screen for sixseconds, thendisappear. When the"ZA"letters areon,thealarm isactive. Ifyouwishtoview thezonealarm bar, simply press either theSHALLOW SET or DEEP SET

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adjusted. To turn the bar on continuously, press both arrow keys in the RANGE sectionat the same time. Usscroll through lngthesamearrowkeys, the menus until menu #10 appears. Usethe arrow keys In the ALARMsection to turn the bar on or (if it'salready on continuously) off. Press theAUTO key to activate theselection.

ZONEALARM BAR:OFF

ZONE ALARMBAR:ON

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MENU #8- GRAYLINE SET
To adjusttheGRAYLINE level,press botharrowkeys inthe RANGEsectionatthe same time. Use the same arrow keys until
menu #8 appears. Press the up arrow key in the ALARM section to turn GRAYUNE SET on. The menudisappears andtheZ-7200 returns you to the chart display. Theword "GRAY"appears in the upper left corner of the screen. This signifies that the sensitivity bar now shows the amount of GRAYLINEin use. To increaseor decrease the GRAYLINE level, press the right or left arrow keys intheSENSITIVITYsection. After the desired level is attained, wait six seconds and GRAYLINE will turn itself off.

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keys. The barwill be displayed for six seconds. The zone alarm bar can be turned on permanently with a menu. Seethe COMMANDsectionfordetails. When an echoappears onthe side of the screen In the area right covered by the zone alarm bar, the words "ZONE ALARM" flash on the screen.
If the range is changed, the zone alarm may need to be changed also since it does not track rangesettings.
When the Z-7200 isturned on, thealarm's speaker isnotactivated.To
turn the Zone Alarm's speaker on, press both the SHAL SET and DEEP SET keys at the same time. Pressing the SHAL SET and DEEP SET keys at the same time again will turn the alarm off and all settingswill be erased.
MENU #9-GRAYLINE CHECKS OR LINES GRAYLINE is normally displayed with a checkerboard Using this pattern (checks). the pattern can be menu, changed to horizontal lines. To change, press both arrow keys in the RANGE section at the same time. Using the same arrow keys, scroll through the menus until menu #9 appears. Usethearrow keys in the ALARM sectionto select checks or lines. Press the AUTO key to activate your selection.
Alight isallowsoperation oftheZ-7200at night. Atfirst,turningthe unitoncausesthe lightstoflashforsixseconds. Press bothSENSITIVITY keysatthesametimeto turnthe lightson. Toturnthe lights off, pressboth keys again. The lightswill also go outwhen the Z-7200 is turnedoff.

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COMMAND TheZ-7200 has "menus"ofcommandsthat allowsyouto customof menus available. These izethe unittoyour needs. There are 13 pages menus are accessed with the RANGE keys. Press both keys atthesame time and thefirst menu appears for six seconds. As you cansee in the VOLUME. Thenumber photo onthe nextpage, thefirstmenu Is SPEAKER menu number one. "1" at thebottomof the screen Indicates this Is

AUTO key to activate.

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tion level, press both arrow keys in the RANGEsectionatthesametime todisplay menu #1. Next, pressthe up arrow key until menu #2 appears. The current Discrimination level isdisplayed intheupperhalfof thescreen. It canbe adjusted from 0 (off)to 10 (high). When the Z-7200 Isturned on, the Discrimination level is 1. Use the arrow keys in the ALARM sectionto changethelevel. Oncethe desired level is set, press the AUTO keyto activate it.
To change the Discrimina-

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MENU #3-Sec (SURFACE CLARITY CONTROL)
Themarkings or noise--at the top of the display can extend manyfeet below thesurface. This interferes withfishsignalsand other targets. These markings are Surface Clutter and are caused by wave action, boat wakes, baitfish, temperature inversions, and other

reasons.

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MENU #4- DIGITAL
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. It graduallyincreases as thedepthincreases. Themaximum depth that 8CC will affect is three quarters of the selected depth range. For example, with maximum SCC, on a 0 to 60 foot range, 8CC would have an effectfrom the surface to 45 feet.
arrow key until menu #4 appears. Use thearrow keys in the ALARM section to turn the digitaloff or on. PresstheAUTOkeytoactivate your selection.
This menu turns thedigital depth display offand on. When the Z-7200 Is turned on, the digital display is on. Toturn it off, press both arrow keys in the RANGE sectionat the same time. Then pressthe up
MENU #5 - DIGITAL AVERAGE
theZ-7200 Is a highly sensitive device that gives rapid updates of the
water's depth. Under most conditions, the bottom contourchanges so quickthatthe displayappears to "jitter". In otherwords, the display will change so quicklythat it can be difficult todetermine the actual bottom depth. To minimize this condition, the Z-7200 averages the bottom readingsbetween narrowparameters and displays the result. When the Z-7200 Is first turned on, averaging is enabled. To turn it off, select menu #8 by pressing both arrow keys Inthe RANGE sectionat thesame time. Then press theupor down arrow keys in the RANGE section until menu 8displays. Next press the up or down arrowsin the ALARM section of the keyboard to turn averaging on or off. Wait several seconds for the menu to disappearor press the AUTO keytoactivateyour selection.

The digital sonar used in
8CC hastenlevels of adjustment. Turning the Z-7200 on automatically sets 8CC to level 1. To change to a different level, press both arrowkeysInthe RANGEsectionatthe same time,then press theuparrow key until the8CCmenu appears. Then press the arrow keysinthe ALARM sectionforthe desired 8CClevel. Then press theAUTOkeytoactivatethe new 8CClevel.

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CF-7200

Portable 2-channel FFT Analyzer

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Magnitude

Time Envelope

Frequency

Spectrum Envelope

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m /s2 m /s m Pa N

AVERAGE SUMMATION

1.0 COH 0

BMP TXT DAT

TXT DAT

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Tracking Analysis Function
Display examples of Tracking Analysis
Various types of display can be selected.

Color map display

Data & trace display

3D color map display

Adding the optional CF-0722 Order Ratio Analysis Function makes it possible to perform constant-ratio tracking / constant-width tracking / time tracking analysis and recording with the rotational data. You can use the recorded data (ORF file) to perform off-line analysis.
Notes for performing constant-ratio and constant-width order tracking analysis Constant-ratio order tracking
Tracking analysis is performed by using the rotation pulses obtained from the rotator as an external sampling clock. It plots the changes in the spectrum level of order component of interests corresponding to the rotational speed.
The order-analysis resolution is fixed regardless of rotational speed. In case of the signals resembling random noise without any clear peak as order component, the frequencys bandwidth (resolution) becomes high at the higher rotational speed. Therefore, there is a tendency of the spectrum numerical value becoming large.
Constant-width order tracking
Frequency analysis is performed via an internal sampling clock. Each time the rotational speed changes, the frequency of the order of interest is measured from the frequency range and the rotational speed at that time. A plot is then created for the changes in the spectrum level of this frequency component corresponding to the changes in rotational speed.
The frequency resolution is fixed regardless of rotational speed. With the low frequency range, it will be impossible to increase the rotational speed ratio so higher comparing with the fixed ratio order tracking. It is necessary to determine the maximum frequency before setting the number of analysis order (because the upper-limit frequency is limited by setting the frequency range.)
Soft Carrying Case CC-0025
Hard Carrying Case CC-0071A
*The CF-0722 is required for data recording with rotational data.
Carrying handle(can be stored)

230 300

Main Unit

PEN BATTERY

LCDCOVER

BATTERY CONNECTOR

*Outer appearance and specifications are subject to change without prior notice.
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