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MAC TOOLS EM721 - Understanding the Display; Auto Power Off and Inductive Pickup

MAC TOOLS EM721
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14
Auto Power Off
When the rotary switch is in the position, the meter will turn off automatically if you have not operated the
meter for about 30 minutes (1 hour in the Recording mode) while the input voltage is less than 1V.
When the rotary switch is in other position, the meter will turn off automatically if you have not operated the
meter for about 30 minutes (1 hour in the Recording mode).
About 30 seconds before the meter turns off automatically, the symbol “ ” will start ashing to remind you
that the meter will turn off.
To turn on the meter again, set the rotary switch to OFF position rst and then set it to a desired position.
To disable the automatic power-off feature, turn on the meter while holding down the “HOLD” button.
Using Inductive Pickup
The meter comes with an Inductive Pickup. The Inductive Pickup takes the magnetic eld generated by the
current in the spark plug wire and converts it to a pulse that triggers the meter’s RPM measurement.
4. UNDERSTANDING THE DISPLAY
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