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MAC TOOLS EM721 Manual Del Usuario página 12

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Idiomas disponibles

Idiomas disponibles

9.
"COM" Terminal
Common (return) terminal for all measurements.
10. "mA μA" Terminal
Input terminal for current measurements < 400mA.
11. "A" Terminal
Input terminal for current measurements between 400mA and 10A.
12. "RANGE" Button
This "RANGE" button can be used to:
Toggle between autorange mode and manual range mode as well as to select desired manual range.
Select number of cylinders (1, 2, 3, 4, 5, 6, 8, 10, or 12) to match the engine when the meter is in
RPM IG or dwell function.
Toggle between 2-Cycle engine (or distributorless ignition system 4-Cycle engine) and 4-Cycle engine
when the meter is in RPM IP function.
In a function which has both autorange mode and manual range mode, the meter defaults autorange mode
and "
" appears on the display as an indication. You can press the "RANGE" button to enter manual
range mode, "
In manual range mode, you can press the "RANGE" button to select the next higher range. After the highest
range, the meter wraps to the lowest range. To exit manual range mode and return to autorange mode,
press and hold down the "RANGE" button for 1 second; "
Always select a range higher than you expect the current or voltage to be. Then select a lower range if
better accuracy is needed. If the range is too high, the readings are less accurate. If the range is too low,
the meter shows "OFL" as an overload indication.
When the meter is in the RPM IG or dwell function, press the "RANGE" button to toggle between 1, 2, 3, 4,
5, 6, 8, 10, 12 cylinder engines. The selected number of cylinders is indicated by the number preceding
CYL on the display.
When the meter is in the RPM IP function, press the "RANGE" button to toggle between 2-cycle engine
(or distributorless ignition system 4-cycle engine) and 4-cycle engine; the selected number of cycles (or
strokes) is indicated by the corresponding symbol ("
13. "% DUTY" Button
When the meter is in RPM IG function, press this "% DUTY" button to measure duty cycle (or duty factor)
in percent; % readout is displayed. Duty cycle is the percentage of time a signal is above or below a trigger
level during one cycle.
12
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" will disappear and the meter will stay in the present range.
" will appear on the display as an indication.
" or "
").
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