By Edwin Sherman

SAVE money and time WITH THIS cutting-edge advisor TO the newest, so much complex DIAGNOSTIC gear and methods

“Ed Sherman is considered one of America’s nice academics and communicators of marine technology.”--Tim Murphy, government Editor, Cruising international

Whether you're a marine electronics expert or a boatowner, complex Marine Electrics and Electronics Troubleshooting is helping you realize the hot, extra robust equipment of troubleshooting marine electric and digital structures. a latest boat’s refined installations and networked electronics can stretch the normal diagnostic tools in accordance with difficulty lighting and multimeters previous their invaluable limits. This e-book will help you:

  • Use microprocessor-based diagnostic instruments and methods from the automobile and communications sectors, tailored for boats for the 1st time
  • Diagnose the main tough AC and DC difficulties
  • Protect communications and navigation electronics from interference and lightning
  • Seek out and get rid of stray-current resources and galvanic corrosion

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Extra resources for Advanced Marine Electrics and Electronics Troubleshooting: A Manual for Boatowners and Marine Technicians

Example text

Interpreting the Results Voltage and amperage readings can tell you many things beyond whether the starter circuit is in order. Particularly on modern boats, which are increasingly powered by electronically controlled engines, excessive system voltage drop during engine cranking is a concern. , not enough capacity) for the task at hand, or that the wiring is too small for the job and an upgrade is required. Cranking amperage is also of concern, as mentioned above, but historically, engine manufacturers have been more than a little shy about sharing relevant cranking amp specifications with technicians or end users of their products.

At the time, I was concerned about the misconceptions and tales of woe I was hearing regarding these instruments, yet I was also intrigued by the possibility that they could be more accurate than traditional battery testing methods. I had only superficial experience with them and had never looked at how they worked. The research was eye opening. Since then I’ve learned a lot about these devices and have come to believe in their capabilities. A conductance battery tester is easy and safe to use.

After a few seconds the EXP will prompt you to rev the engine for 5 seconds with the loads on. The correct rpm level will be shown in a graphic display similar to that shown for the no-load test in photo 2 on page 29. 4 Next, turn off the loads and the engine. 6 The arrow keys allow you to scroll through a series of results in bar graph format. 5 The test results. 01 V between the loaded and unloaded test, indicating that the alternator charging system had no problem keeping up with the loads. , with the engine not running).

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