User manual LOWRANCE LMS-150

[. . . ] LMS-1 50 c. INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U. S. A. 988-0119-28 I®LQWRAfjcE ELECTRONICS, INC. SKELLY DR. , TULSA, PDF compression, OCR, web-optimization with CVISION's PdfCompressor OK 74128 NOTES: Copyright© 1991, 1992, Lowrance Electronics, Inc. All rights reserved. All sonar and loran screens in this manual are simulated. Features and specifications subjectto change without notipe. CAUTION This loran receiver (like all loran navigation equipment) will show the shortest, most direct path to a waypoint. It provides navigation data to the waypoint, regardless of obstructions. Therefore, the prudent navigator will not only take advantage of all available navigation tools, . but will also visually check to make dertain a clear, safe path to a waypoint is always available. WARNING! [. . . ] Symptoms of noise or interference problems: 1. Loran won't lock on to stations 2. Accuracy is not repeatable or erratic a. XTE, Bearing, Heading, SOG, or TTG erratic or inaccurate 4. Waypoint mustbe recalled to use cross track error feature. 5. IMPORTANT SERVICE INFORMATION! If your unit is not working, or if you need technical help, please use the followingtroubleshooting sectionbefore contacting a servicecenterorthe. It may save you the trouble of returning your unit. Loses lock while boat is moving: a. Attach the UltraNav's power cable directlyto the battery c. Attach ground wire to ELC-1 loran module. (See page 81. ) SONAR TROUBLESHOOTING Unit wdn't turn On: 1. Checkthe powercable's connection at the unit. Makecertainthe powercable is wiredproperly. The red wire connects to the positive baftery terminal, black to negative or ground. 3. Measurethe batteryvoltage at the unit's powerconnector. It should PDF compression, OCR, web-optimization with CVISION's PdfCompressor 80 41 be at least 11 volts. If it isn't, thewiringto the unit isdefective, thebattery terminals or wiring on the terminals are corroded, or the battery needs charging. LORANTROUBLESHOOTING 1. You must have an 8' antenna. Preferably, the entire length of antenna should be higherthan anything else on the boat. the H Unit freezes, locks up, or operates erratically: 1. Electrical noisefrom the boat'smotor, trollingmotor, or an accessory may be interfering with the sonar unit. Re-routing the power and transducercablesawayfromother electrical wiring ontheboat may help. Route the sonar unit's power cable directly to the battery instead of through a fuS blockor ignitionswitch 2 For best results, wire the power cable directly to the battery preferabIy the main engine's cranking battery. This assures the boat will be grounded, sincethe lower unit is in the water. If you're using an isolated battery, . wire a grounding plate to the ground side of the. [. . . ] The crass track error (XTE) displays right above the CDI. This is the same distance as shown by the C. D. I. POStTIQM display, only in digital numbers. When N 24° 57. 12' the [MS-i50 is first turned on, the cross (4 80° 19. 79' track error displays in statute miles. [. . . ]