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MAC TOOLS EM721 Manual Del Usuario página 25

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Meter setup to measure capacitance:
Set the rotary switch to the Capacitance
(
) setting.
Insert the black lead in the "COM" jack.
Insert the red lead in the "
Connect:
Test probes to the capacitor. When measuring polarized capacitors, connect the red probe to the anode of
the capacitor and the black probe to the cathode of the capacitor.
Wait until the reading is stable, then review the reading on the display.
Hi-Sen Frequency (Hz) Measurements
This meter has two frequency measurement modes: the High-Sen (high sensitivity – trigger level of
about 250mV) mode for the general frequency counter mode and the Hz or RPM IG mode for automotive
measurement.
In the High-Sen Frequency counter mode, the meter autoranges to one of the four ranges: 200Hz, 2000Hz,
20kHz, and 200kHz.
If the input signal is below the trigger level, frequency measurements will not be taken. If your readings are
unstable, the input signal may be near the trigger level for that range. You can usually correct this by selecting
a lower range using the "RANGE" button. If your readings seem to be a multiple of what you expect, your input
signal may have distortion or ringing, which is common to signals from electronic motor controls. In this case,
use the Hz or RPM IG mode to get the correct readings.
800.MACTOOLS
All manuals and user guides at all-guides.com
" jack.
Black
Ground
Signal Output
Reference Voltage Side
Red
25

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