Braebon Ultima 0580A, User Manual, Page: 20 / 28

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The Ultima Dual Airflow Pressure Sensor™ contains four 20-turn potentiometers (pots) which
allow for precise adjustment of both gain and baseline settings for the nasal and oral outputs.
Under most circumstances, you will
NOT need to make any adjustments.
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You can enlarge or reduce the size of the waveform on the display by turning the gain screw
clockwise or counterclockwise respectively. You do not change the actual recorded signal when
you increase or decrease the gain.
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1. To increase the gain (enlarge the waveform), turn the appropriate gain screw clockwise.
2. To decrease the gain (shrink the waveform), turn the appropriate gain screw counterclockwise.
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When you turn the baseline adjustment screw, you change the position of the waveform on the
display of your recording system. By turning the screw clockwise or counterclockwise, you
move the waveform further up or further down on the display so you can view the signal
peak-to-peak. The baseline is set to zero volts in the factory.
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1. Using the interface cable appropriate to your recording system, connect a 1 mm keyhole
connector to either the Nasal Airflow and Snoring output or the Oral Airflow and Snoring
output.
2. Connect the voltmeter to the interface cable.
3. Do the following:
• To move the baseline higher, that is increase the baseline voltage, turn the appropriate
baseline screw clockwise.
• To move the baseline lower, that is decrease the baseline voltage, turn the appropriate
baseline screw counterclockwise.
Caution:
Do NOT adjust the baseline without a voltmeter.