Advanced Marine Electrics and Electronics Troubleshooting A Manual for Boatowners and Marine Technicians
CHAPTER 8 Using a Laptop for Intermittent Problems O ne of the first troubleshooting steps is confirming or denying the existenc ...
Multimeters and other instruments with the capability to record measurements to internal memory or upload them to a com- puter a ...
Additional Advantages While our primary focus is identifying inter- mittent problems, having a PC or laptop link- up has other a ...
the instrument cluster. Then take the boat for a sea trial in rough seas until the dash lights begin to blink. You can then conf ...
CHAPTER 9 Testing for Electromagnetic and Radio Frequency Interference A s boats become more complex, and we continue to install ...
In the field of electronics, EMI and RFI are synonymous—they both arise from elec- tromagnetic radiation, which is energy made u ...
battery chargers blower fans DC-to-AC inverters depth sounders electric fuel pumps engine alternators engine ignition systems e ...
microprocessors SSB radios TV and satellite tracking antenna direc- tion sensors VHF radios So when equipment misbehaves, how ...
As we saw above, frequency matters, and on your transistor radio, the AM band you are listening to is in the 540 kHz to 1,700 kH ...
increase if interference is present, and decrease as you move away. As with the radio, move the meter around, trying different a ...
CHAPTER 10 Testing for Residual Current and Isolating Its Sources I n a perfect world, alternating current does just that: it al ...
94 electrical systems troubleshooting Direct Alternating Current (mA) Current (mA) Effect Male Female Male Female Slight sensati ...
level it takes to trip a conventional circuit breaker, nominally rated at 15 or 30 amps, but more than enough to be lethal. How ...
current going, or, for that matter, where is it coming from? That’s the tricky part, because the answer to the question is, it d ...
To locate the source, do the following: 1 Shut off the main AC breaker to the boat. If the residual current reading goes to zero ...
operator and all the boatowners in the area—a potentially deadly situation exists. (Note: Your previous residual current reading ...
after they have begun losing their effective- ness. This is not surprising, since ohmmeters are typically used to look for failu ...
or reject that suspicion. Alternatively, many people will use the clamp-on leak tester dis- cussed earlier. If excessive leakage ...
other specified criteria, such as temperature. For example, if you are testing cable insulation, make sure the cable is complete ...
102 electrical systems troubleshooting To test a piece of coaxial cable for leakage, insert the lead between the core conductor ...
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