Digital Acoustics ESBx-110 Instrukcja Obsługi Pobierz pdf (Strona 6)

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for “grounds”, as follows:

case, touch each terminal, A – D, with RED test lead

probe. Meter should display “OL” at each terminal.

If meter makes a continuous tone at any terminal,

RED TEST LEAD BLACK TEST LEAD BEEP

B A Yes

C B Yes

C D Yes

D A Yes

DC SHUNT

Have you ever wanted one tool in your toolbox that

would make your life so much easier that it would

might well be the ïçíëç DC shunt. The DC shunt

is a device that enables the technician to make

several electrical tests with only one hook-up to the

equipment. By using the DC shunt, we can test for

system draw with the key switch off, system draw

with the key switch on, starter peak amp and steady

amp draw, and alternator charging. All of these tests

can be done in about 30 seconds taking all the guess

work out of the process.

Electricity is one of those mysterious entities that

most of us are at best, very leery of or at worst,

down right frightened of. But once we have a basic

understanding of electrical theory, and acknowledge

that electricity has to follow strict physical properties,

electrical testing becomes one of the easiest

troubleshooting problems we will encounter.

HOW DOES A SHUNT WORK?

Several years ago we introduced the ïçíëç DC Shunt as a complement to the Fluke Digital Multi-meter.

Though a very effective and useful tool, two questions usually come up:

Why is a reading taken in millivolts to read amperage?

Can I use the shunt with another brand of meter?

The shunt works by adding a measured load (resistance) to a DC series circuit. Any load in a circuit will cause

a voltage drop across that particular part of the total load. The two meter connecting posts are across part of

the posts. The meter must be set to the millivolt scale in order to obtain the correct reading. This is actually

a much safer approach than working with higher amperage.

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Digital Acoustics ESBx-110 Instrukcja Obsługi Strona 6