506/506B
EN
Caution
• Replace the fuse as soon as the indicator (FUSE) appears.
To measure current, you must break the circuit under test,
thenplace the meter in series with the circuit.
The ranges of measuring current are 40mA, 400mA, 4A and
10A. AC current is displayed as an rms value. Insert the
black lead into the COM terminal. For currents less than 400
mA, insert the red lead into the mA terminal. For currents
above 400 mA, insert the red lead into the A terminal.
You can press the function (yellow) button to select current
measurement function.
Measuring Frequency
The meter measures the frequency of a voltage or current
signal by counting the number of times the signal crosses a
threshold level each second.
This function only can be operated in AC voltage and current
measurements. The ranges of measuring frequency are
400Hz,4kHz, 40kHz and 100kHz.
If a reading shows as 0 Hz or is unstable, the input signal
may be below or near the trigger level. The detail of
frequency trigger level refer to the electrical specifications.
To use the frequency function, press function (yellow) button
to select measurement function.
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