-- papertransport assemblydown to see the decal for the first time. Push the transport closed and turn on the unit. (Caution -- Keep hands away from the stylus belt and stylus. High voltage is present.) Insert a 6"-S" long screwdriver with a 1/s" blade into the zero adjust hole and rotate the control on the circuit board until the zero line is at the desired position. (Note: This may also be adjusted with the unit turned OFF. Adjust the control, then remove the screwdriver and turn power back ON. Repeat until the zero line is in the desired position.) 10 -- 20 -- 30 -- 40 -- 50 -- 60 -- 'UI Figure 20 END-OF-PAPER MARKER The graph paper in the Z-15 has a red line printed at the bottom of the paper to signify when there is only 2 to 3 feet before the end of the paper. ZERO ADJUST Occasionally, when changing the stylus or stylus belt, the zero line does not print at the same place nearthe top of the chart paper. IV HOW TO READ GRAPHS "Arched Signatures" Z-15 is that it can record individual fish with a characteristic arched mark that separatesthem from their stationary surroundings. The reason for this is shown below. The distance to a fish when it moves into the sonar's cone of sound is shown as 'A". When the fish has moved to the center of the cone, the distance to it will be shorter, (line "B"), and as it moves out of the cone, the distance will increase again as shown in line "C". A remarkable advantage of the Figure 22 If a partial arch occurs most of the time on your unit, (the mark curves up, but not back down, or vice-versa) it is because the transducer is not pointed straight down. If your transducer is mounted on the transom, adjust the transducer until the fish show the distinctive arched signature. This may take some trial and error until the correct mounting is achieved. Sharp, well defined signatures will occur most often when the Sensitivity knob is set at the ¾ point, or higher. Remember, that there must be some movement between the boat and the fish to develop the arched mark. Usually this means trolling at very slow speeds with the main engine in gear at minimum throttle setting. THERMOCLINES The temperature of water in the lake is seldom constant from top to bottom. Layers of different temperatures form, and the junctionof a warm and cool layer of water is called a thermocline. The depth and thickness of the thermocline can vary with the season or time of day. In deep lakes there may be two or more, at different depths. Thermoclines are important to the fisherman because they are areas where fish are active. Many times bait fish will be above the thermocline while larger game fish suspend just below it. Your Eagle Z-15 can detect this invisible layer in the water, but the Sensitivity knob wifl probably have to be set at the 1/a point, or higher. PAPER LOADING CAUTION -- High voltage is present in the electronic section when the unit is turned on. Figure 21 A zero adjust control has been placed on the back inside wall of the Z-15 nearthe upper left PDF compression, OCR, web-optimization with CVISION's PdfCompressor 10 11 hand corner so that the zero line's position may be adjusted on the paper. Open the case front and look for the decal marked "ZERO ADJUST". You may have to pull the 1. TURN THE UNIT OFF. 2. Release both catcheson the top of the case. Pull out and down on the top of the case front to expose the platen assembly. (See Figure 23.) 3. Move the stylus belt DOWN, to position the marking stylus on the back side of the platen. NEVER move the belt up -- the stylus may be damaged. (See Figure24.) SPECIAL NOTE: The stylus may be damaged if the platen assemblyis pulled down unless the stylus has been moved to the back side of the platen. LIO.._.____.._...__..____ ..__._____LjQ._ 9LJ MARKER -- 'ID --- ----_.. 9L ---- --------------'IE - 52 -- -- ------52-- s------U bO--D--I---------D An event marker function is included in the Z-15 so that events may be marked when desired. To use the marker, simply press the MARK key and a vertical line will be displayedacross the entire page. Hold the MARK key down and a vertical line will be printed for as long as the key is held down. Example: Press: MARK Result: ----- ---- Figure 23 Figure 24 4. Pull out and down on the tab at the top center of the platen assemblyto expose the paper spools. (See Figure 25.) 5. To removethe full take-up roll and the empty supplyspool, press the two metal tabs together on the top of the platen assembly, and pull out and down on the paper retainer. (See Figure 26.) The full takeup roll can now be easilly removed from the paper core shafts. (See Figure 27.) 6. Pull the empty supply core from the right side in the same manner Install the empty core onto the take-up shaft. (See Figure 28.) Align the two notches in the core with the tabs on the lower take-up spool. 7. Slide a fresh roll of paper in position on the supply side shaft on the right side of the platen assembly. The paper must spool off the bottom of the roll. (See Figure 29.) NOTE: Use Eagle EGP-2 chart paper Figure 17 tions to show segments from the surface to the bottom and anywhere inbetween. Representative samplesof chart paper are shown in the back of this manual. If you wish to display your depth settings at any time, simply press either the UPPER LIMIT or LOWER LIMIT keys. The current range will be printed on the paper immediately. This will not change 12 -- ------ 12---21 21 --- - Sb---- ---'ID--------- -- __________ -- the depth setting. 1U - D--I--- - L'--- -- hO -. - LINES When the Z-15 is first turned on, depth lines will be printed on the paper If you desire to turn the Lines off, press the LINES key. To turn the lines back on, press the LINES key again. Example: Turn lines off: Press: LINES key Result: Figure 19 SCALE depth or scale may be deleted if desired. Pressing the SCALE key once will stop the printing of the scale numbers. The scale may be displayed again by pressing the SCALE key. Remember, the scale may be· displayedat any time by pressing either the UPPER LIMITor the LOWER LIMIT key. Example: Press: SCALE Result: The numbersthat indicatethe 21 'ID Figure 26 0-I 0 bU i-I 0 (See Figure2O) 12 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Figure 18 --- ----- ------ ------ -- -JO hi] --- -------- -- ---- - 90-120-- MR ------------u--i U inn - '50 - fl--I -- I: 'SI]-- Figure 13 Example: Change range to 0-80 feet. Press: 8 - 0 - LOWER LIMIT Figure 15 pand a section of the area that is displayed on the graph recorder to show more detail. This is made possible by the Z-15 to show segments of the underwater world by using the UPPER LIMITfunction. Using the UPPER LIMIT key allows you to display any depth range in multiples of 10 at the top of the chart paper. Example: Turn on unit and set range to 20-60 feet. Press: 2- 0- UPPER LIMIT The depth will then be displayed. ado - 20--------- 22 The depth will then be displayed. -- lb lb 22 --22 '10 - - 90 --- --------------------------- EM 00 U--I U - -Un - Figure 14 Any depth in a multipleof ten (10, 20, 30, 500, etc.) may be used as a lower limit displayed at the bottom of the chart paper. Example: Change range to 0-150 feet. Press: 1 LOWER LIMIT The depth will then be displayed: (See Figure 15.) -- -- -- 20-------- Rb - Rb 99--- -- -- 'I'! --- 8. Draw the end of the paper across the face of the platen, around the friction roller, over the take-up core, and tape it sciuarely to the take-up core. (See Figure 30.) Small pieces of tape may be stored inside the housing for this purpose. Close the top of the platen assembly by pressing the two tabs together on the paper retainer and returning the retainer back to the operating position. (See Figure 31.) 9. Turn the small knob at the upper left hand side of the platen assembly to put a small amount of tension on the paper. It should be snug against the platen. (Figure 32.) 10. Push the platen assembly back to its operating position. Be sure it engages the catch inside the top of the case. 11. Close the front of the case. Latch both catches on the top of the case. 12. Turn the unit on. Move the Chart Speed knob fully clockwise. Watch the paper long enough to be sure it is moving smoothly and evenly across the platen. If the paper flutters or begins to run "uphill", repeat step 8. 52 --- U -------- 52 5-0- hO- P--I Figure 16 - Notethat the paper speed slows automatically at this range setting. UPPER LIMIT Many times it is desirable to ex- Example: Set range to 40-60 feet. Press: 4 - 0 - UPPER LIMIT The range will then be displayed: (See Figure 17.) The Upper and Lower Limits can be used in various combina13 PDF compression, 8 OCR, web-optimization with CVISION's PdfCompressor STYLUSREPLACEMENT er fish arches at low speeds and -- High voltage is present in the electronic section when the unit is turned on. 1. TURN THE UNIT OFF. CAUTION 2. Release both catches on the top of the case. Pull out and down on the top of the case front to expose the stylus belt. (See Figure25.) 3. The stylus belt rides over two wheels located at the right edge of the platen assembly. Move the front of the belt DOWN to position the stylus at the center of the platen. 4. Hold the stylus belt stationary with one finger, and remove the old stylus by starting at its left edge and moving it out from under the tabs on the stylus holder. , 5. Before installing the new stylus, be sure it is bent properly by comparing it to Figure 33. 6. Referto Figure 34to be sure the new stylus is positioned correctly underthe tabs on the holder. Be sure it moves freely in the two slots. If not, bend the stylus away from the edge it is rubbing on until it does move freely. keeps high speed information from being compressed. The paper speed should be turned down when using the unit in deep water. This will prevent gaps from appearing in the record. In fact, the microcomputer will automatically slow the maximum speed of the chart paper when operating in deep water. The chart below gives the points where the maximum speed of the paper is slowed. RANGE PAPER SPEED 10,-hO' Fastest Paper Speed 120'-490' Medium Fast Paper Speed 500'-790' Medium Slow Paper Speed 800' & Below Slowest Paper Speed The chart paper may be slowed even further by adjusting the paper speed control. Remember, if gaps in the record appear, turn the paper speed down until a solid record is achieved. The paper speed may also be slowed when not looking for fish or to simply conserve paper. For more information about saving paper, read the AlternateTransmit and Print function in the Advanced Operation section. GRAYLINE CONTROL The GRAYLINE function can be usedto outline the bottom contour which might otherwise be hidden beneath trees and brush; it can also give clues to the composition of the bottom.A hard bottom returns a very strong signal causing a wide gray line. A soft, muddy or weedy bottom returns a weaker signal which is emphasized with a narrow gray line. Do not advance the control too far or it will gray line on the target completely, showing no black, which makes the target difficult to see. 12 At /, p r I' -- I Figure 11 GRAYLINE "OFF" ...t '1 bD i ,,,. Figure 12 RANGE GRAYLINE "ON" 7. After installing, if the stylus won't print all the way down the paper as shown in Figure 35,bend the right leg down so that more pressure is exerted against the stainless steel plate. If it still does not print all the way, bend the left leg down more (but not so far that it digs into the paper). 8. Close the front of the case. Latch both catches on the top of the case. 14 ' The range function utilizes the keyboard to select any range between 0-10' and 2540'-2550'. Please read this section carefully to get the most out of your Z-15's range capabilities. Lower Limit When ybu first turn on the Z-15, the range will be 0-60 feet. (See Figurela.) simply press the desired depth on the keyboard, and then press the LOWER LIMIT key.. To change to a deeper range, 7 PDF compression, OCR, web-optimization with CVISION's PdfCompressor ratic, unwanted noise marks. Most of the time at low or trolling speeds, no suppression will be necessary. Figure 33 Figure 34 Figure 7 ILl 29 Figure 9 SUPPRESSION: TOO HIGH l pr 10 U Figure 8 sensitivity in any way. This patented design is exclusive with Eagle. However,with high suppression settings, the graph record becomes coarse and the ability to separate fish from the bottom or from other fish will be decreased. (See Figure 9 &1O.) Therefore, the lower the suppression setting, the better. Advancethe knob setting only as far as necessary to remove the er- Figure 35 STYLUS BELT REPLACEMENT Figure 10 PROPER SETTiNG CAUTION -- High voltage is pre- Paper Speed Control This knob adjusts to speed of the chart paper. For good detailed sent in the electronic section when the unit is turned on. graphs, i ...