User manual EAGLE Z-15 INSTALL GUIDE

[. . . ] -- papertransport assemblydown to see the decal for the first time. 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. 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. [. . . ] However, the 20 degree transducer won't penetrate to greater depths as well as the 8 degree transducer, nor will it show a sharp drop-offas well. In a deepwater environment (100 feet or deeper) the narrow cone angle is more desirable because it can more accurately detect the location of the fish or drop-off in deeper water. Since the sound energy is concentrated in a smaller area, it can reach to deeper depths. Both the 8 degree and the 20 degree Lowrance transducers give accurate bottom readings, even though the bottom signal is much wider on the 20 degree model because you are seeing more of the bottom. whetheryou are over a soft or hard bottom, etc. into the unit and the transducer is in contactwith the water. What To Do Clean viewing door; replace the stylus; check battery connections. Symptom Recorded marks are very heavy; paper is torn by stylus. What To Do Bend the stylus slightly to reduce pressure on paper. VI ADVANCED OPERATION Surface Clarity Control (SCC) The surface markings at the top of the chart paper can, at times, extend many feet below the surface. This is called Surface Clutter and is caused by algae and plankton, air bubbles caused by wave action or boat wakes, bait fish, or tempera- Two levels, S-2, etc. Use only the amount of SCC required to reduce the clutter, as fish signals can be eliminated by using this method, also. If you wish to turn the SCC function OFF, simply press 0-MARKISCC and the SCC function will be disabled. The surface clutter markings can be reduced or eliminated by using the MARK/SCC control key on the front panel keyboard. 1 has a minimum effect on surface clutter, 4 has the maximum effect on reducing surface clutter. The amount of SCC that is used is printed at the bottom of the chart paper. If one level of SCC is used, then S-i is printed. Cone Angle ClameIer line bin 2' 2' 1220 04 , 22 51 . 50' I I I I II loo, 200 ·8°at3db clockwise to turn the unit on. The Sensitivityknob works much like the volume control on a radio, that is, weaker signals will be detected with higher settings of the knob. When cruising, or at other times when just simple bottom contour information is desired, the Sensitivity setting can be low. In deep water or over soft, muddy bottoms, (which produce weak echos), the setting will have to be higher. On-Off and Sensitivity Control -- Rotate the Sensitivity knob Ill BASIC OPERATION - 12---- ------------. ---. ----. - --. . -. __--, ----. . 29---------- 'lB --2 L! . Th- SCC "2" - Figure 37 PDF compression, 4 OCR, web-optimization with CVISION's PdfCompressor 17 Feet. Fathoms, Meters The Z-15 will display the depth in feet, fathoms, or meters. Although the unit will revert back to the feet mode whenever power is turned off, it is simple to change to any mode you wish by pressing the 2nd key and then 1 for feet, 2nd - 2 for fathoms, and 2nd - long pulses, then the short pulses will be cancelledout, and only the desired information (fish, bottom, structure, çtc. ) will be displayed. Of course, the transmitter's pulse length would have to be increased the sectionentitled Advanced Operation". This chapter will describe several other features that will enable the serious operatorto get the maximum benefit from this equipment. [. . . ] PDF compression, OCR, web-optimization with CVISION's PdfCompressor 1 II. In Ifl LI A 1 Specifications Service Information Introduction 1 How It Works Installation Transducer Selection Basic Operation Suppressor Paper Speed GRAYLINE® 2 2 3 4 4 5 6 7 Range Lower Limit Upper Limit Lines Marker Scale End Of Paper Zero Adjust . . . 7 7 B level whereas the highest value (4) is the strongestlevel and should be used only when severe noise is present. To use the Discrimination function, simply press the level of noise rejection desired, from 1 to 4, then press the DISC (Discrimination) Key. There should be an immediate change in the amount of noise present on the paper. [. . . ]