Micronta 22-214A - Making Measurements; Decibel Measurements

Making Measurements
Decibel Measurements
1. Plug the black lead into © COM and red lead into ©
V-0-A.
2. Set the range switch to one of the ACV positions; it is
best to start at the highest range and work down.
3. Connect the test probe tips to the circuit under test.
4. Set the range and range doubler switches as required to
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bases obtain a meter reading in the upper 1/2 or 1/3rd of the dB
scale.
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Making Measurements
———_—
must be 600 ohms.
5. Read dB on the dB scale, adding the appropriate number
of dB to the dB scale reading as noted on the chart at the
lower right on the meter face.
Note: For absolute dB measurements, circuit impedance
0 dB = 1 milliwatt dissipated in a 600 ohm impedance
(equivalent to 0.775 volts across 600 ohms).
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