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Ultrasonic Probe (15 kHz - 80 kHz)
The ultrasonic probe detects sound waves operating above the upper limit of human hearing
capabilities. The ultrasonic probe is a powered probe and must be used with one of the powered
connector cables (see page 19).
Audio Transformer (300 Hz - 20 kHz)
The Audio Transformer is a balanced audio coupler to provide
electrical isolation for audio testing. A 3.5 mm stereo to 3.5
mm stereo cable is included with the MESA to connect the
audio transformer to the MESA. Two push buttons provide a
positive and negative bias voltage to the two banana jacks on
the audio transformer. The control knob on the audio
transformer adjusts the level of the applied bias voltage from
0 to 22 volts. An included set of banana jack test leads with
bed-of-nail alligator clips allow the audio transformer to be
used on 66 blocks or other wires.
Acoustic Leakage Detector (ALD) (300 Hz - 20 kHz)
With the Acoustic Leakage Detector, the operator can determine the
vulnerability of acoustic leakage by placing the probe against structural objects
such as walls or windows. The Acoustic Leakage Detector connects to the
Audio Input on the MESA.
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