User manual EAGLE Z-15 INSTALL GUIDE

[. . . ] -- 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. [. . . ] 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. Remember, the shallow edge of the signal shows you the true depth. The rest of the signal tells you the composition of the bottom, i. e. whetheryou are over a soft or hard bottom, etc. into the unit and the transducer is in contactwith the water. Symptom The unit is "ON", but paper does not move. What To Do Tape paper to cardboard spool on take-uppost. Symptom Recorder marks are faint or dim. 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 often interferes with fish signals or other targets. 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. The effect on surface clutter should immediately be seen. 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. Press: 2 - SCC Result: (See Figure 37. ture inversions. The surface clutter markings can be reduced or eliminated by using the MARK/SCC control key on the front panel keyboard. To use the 5CC, press key 1 thru 4 and then the MARK/SCC key. 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. [. . . ] Example: Enter a Discrimination level of 2. Press: 2- DISC Result: when activated, causesthe stylus to print every other revolution instead of every revolution. Since the stylus only prints every other revolution, the recorded information doesn't have the "over print" problem, therefore good records are attainable at slower paper speeds. Also, the scale numbers are spread out more, making them more legible. [. . . ]