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MAC TOOLS EM721 Manual Del Usuario página 7

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2.
INTRODUCTION
The meter is a handheld, battery-operated automotive multimeter. It is a very useful test tool.
This users manual tells you how to use the meter. You may also need a manual that provides technical
information for the vehicle you plan to test. The most important information resources are the vehicle's service
repair manuals generally available for purchase through automotive dealers. They are also available through a
number of publishers that specialize in providing technical information manuals to independent repair garages.
This users manual servers as a guide to get you started with troubleshooting. You real learning can best be
accomplished through experience. As you become more proficient in using this automotive multimeter for
troubleshooting, you will quickly learn how certain electrical symptoms relate to various driveability problems.
Meter Features
Accurate frequency and pulse measurements with 20,000 count on the high resolution 4000 count display.
High-speed 41-segment analog bargraph updates 20 times/sec - For nearly seamless real-time accuracy.
Accurate automotive electronics test and advanced measurements with DC/AC Volts, DC/AC Amps,
Resistance, etc
Direct reading of dwell without using duty cycle-to-dwell conversion chart when testing electronic fuel
injection, feedback carburetors, and ignition systems
RPM measurement for automotive engines with 1 to 12 cylinders using the test leads or the inductive
pickup
mS-pulse width function to test on-time of fuel injectors of both PFI (Port Fuel Injector) and TBI (Throttle
Body Injector) types
For accurate measurements of RPM, dwell, duty cycle, and mS-pulse width of injectors, the meter provides
seven-step adjustable +/-triggers on 1 to 12 cylinders, either 2- or 4-cycle for outboards, motorcycles, and
conventional engines
Temperature measurement up to 2,498°F (1,370°C) for catalytic converters, fan switch, etc.
Capacitance and non-automotive frequency measurement
Back-lighted display
USB communication
800.MACTOOLS
All manuals and user guides at all-guides.com
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