X-25 INSTALLATION AND OPERATION INSTRUCTIONS LOWRANCE ELECTRONICS, INC. LITHO IN U.S.A. 988-0105-33 12000 E. SKELLY DR.
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N 0 T ES TABLE OF CONTENTS INTRODUCTION INSTALLATION POWER CONNECTIONS SPEED/TERMPERATURE SENSOR KEYBOARD BASICS DISPLAY MENUS OPERATION AUTOMATIC RANGE ZOOM Automatic Operation ZOOM- Manual Operation SENSITIVITY GRAYLINE® FISH ID CHARTSPEED DISPLAY MODE ALARMS FISHALARM DEPTH ALARMS LAMP FEET/METER DISPLAY CONTRAST ASP (Advanced Signal Processing) TRANSDUCERS ANDCONE ANGLES SIGNALINTERPRETATION FISH ARCHES WATERTEMPERATURE ANDTHERMOCLINES SURVEYING A LAKE BAITFISH SONAR TROUBLESHOOTING - 1 1 2 3 4 5 5
. The boatmust bemovingataslowtrollingspeed to seefish arches. Ifthe boat Is motionless, fish stay inthecone,showing on the display as straighthorizontal lines. ELECTRICALNOISE A majorcauseofsonarproblemsis electrical noise. Thisusuallyappearson the sonar's display as random patternsof dots or lines. In severe cases, it can completelycoverthe screenwith blackdots, orcause the unit operateerraticly, or not at all. To eliminate or minimize the effectsof electrical noise, firsttry to determinethe cause.
INTRODUCTION Weak bottom echo, digital readings erratic,or no fish signals(cont.): 2. Electrical noisefromtheboat'smotorcaninterfere withthesonar. Thiscauses thesonarto automatically increase its Discrimination or noise rejection feature. Thiscan cause theunittoeliminateweakersignalssuchasfish oreven structure fromthe display, 3. The water may be deeperthan the sonar's ability to findthe bottom. If the sonarcan'tfind the bottomsignal whileit's in the automaticmode, thedigitalwill flash continuously.
a one inch hole. TherefOre, afterdrilling the hole, passthe transducer connectorup through the holefrom underthe dash. Thendrop the powercable down from the front side of the dash. Slide the bracket over the hole,then routethetransducer and power cables out the slots in the bracket. Finally,fastenthe bracket to the dash.
SURVEYING A LAKE SPEED/TEMPERATURE SENSORINSTALLATION The most successful anglers on any body of water are those who fish it day after day and year after year. Eventually, they learn the hot spotsthat produce fish consistently. They discoverthrough experiencewhere, and at what depth,they can expect to find the fish they want at any season. And they realize that these productive areas change throughout the year depending on waterlevel, temperature, food, and other factors.
KEYBOARDBASICS The unit soundsa tone when you pressany key. This tells you the unit has accepted a command. ON/CLEAR Use this key to turn the unit on. It also clears menu selections and the menus from the screen. 830 OFF This key turns theunit off. 750 MENU 770 The X-25 has many menus of features that are accessed with this key. UP and DOWN ARROWS Use thesekeys to adjust virtuallyeveryfeature and function on the unit. Use these keys to adjustthesensitivity, chart speed, range, and 760 more.
Very small fish probablywill not arch at all. Medium sizedfish will show a partial arch, or a shape similarto an arch if they're in deep water. Large fish will arch, but turn the sensitivity up in deeper water to seethearch. Because of water conditions, such as heavy, surface clutter, thermoclines, etc., the sensitivity sometimes cannot be increased enoughto get fish arches. One ofthe bestways to getfish arches is to expand or "zoom" a segment 01 the water. For example, from 45 to 60 feet.
Menus change depending on the mode the unit is in. For example, if theautomatic mode is turned off, the sensitivity menu changes from "AUTO SENS"to "MAN SENS." Other messages mayappearin menu boxes or new menus canappear, again depending on previous selections. OPERATION FISH ARCHES Fish arches are created whenthe coneof sound passes over a fish. The distanceto a fish when thecone first strikes it is shown as "A" below. When the center of the cone strikes the fish, the distanceis shorter as shown "B".
Both 8 degreeand 20 degreetransducers give accurate bottom readings, eventhough the bottom signal is much wideron the 20 degree model. This is because you are seeing more of the bottom. Remember, the shallowedge of the signal showsyou thetrue depth. The rest of the signal tells you whetheryou are over rocks, mud, etc. SIGNAL INTERPRETATION YourX-25 gives an accurate picture of the bottomthat your boat is passing. A bottom of firmsand, gravel, shell, or hard clay returns a fairlywide signal.
Press the up arrow key to decreasethe zoom size, press the down arrow key to increase the zoom size. Whenthe unit is switchedinto thezoom mode,the tellers "ZM" appearat thetop of the screen. The zoom windowsize displaysin thetop right corner of the E 3IAFT ZM——20 ZOOM SIZE Wa '- 2OFT screen. C To turn thezoom featureoff,press the menu key until the RANGE/ZOOM menu apears. Now presstheup arrow key. This switches theunit into the range mode, whichturns thezoom featureoff.
To chanQe from feet to meters or vice-versa, press the menu key until the FEEt/METER menu appears. Press thedown arrow key to switch to metric, the up arrow to switchto feet. Displays show in feet when the unit is firstturned on. The menu will clear automatically after a few seconds or pressthe ON/CLEAR key to clearthe screen. SENSITIVITY DISPLAYCONTRAST The X-25 adjusts thesensitivity level to keep a solid bottom signal on thescreen. It adds a little extra when it's in the automatic mode.
narrow or no gray line. A hard bottom returnsa strong signal that causesa wide gray line. If you havetwo targets of equal size, one with gray and theother without,thetarget with gray is the strongerecho. This helpsdistinguish fish from structure, or the largerfish from a smallerone. turnthe alarm Soundoff until the shallowalarm is triggered again. To turn thealarm off, press the menu key until theshallow alarm menu appears. Thenpress the up arrow key until the word "OFF" appears. The alarm is now off.
ALARMS featureto distinguish from fish. You maysee Fish ID symbols on the screen when, in fact, there are no fish. Practice with the unit when the Fish ID feature is on and offto becomemore familiarwith Fish ID. FISH ALARM The FishAlarm sounds a tone when a fish symbol appearson the screen. To usethe fish alarm, press the menu key until the "FISH ALARM" menu appears on the screen. Now press the up arrow key to turn the alarm on. Repeat the above steps to turn thefish alarm off.
DISPLAY MODE The X-25 hassix differentscreen modes. To changemodes, press the MENU key until the "DISP MODE" (DisplayMode) menu appears. Then pressthe up or downarrow keys until the desired mode number appears. The modes are as follows: CHT 1 (Chart #1) This is the default mode usedwhen the X-25 is firstturned on. It hasthe following features: 1. Automatic On 373FT DIsP MODE •CHT 1 S __ CHT 4 (Chart #4) This is the High Speed Scroll mode.
