Braebon Ultima 0580A, User Manual, Page: 11 / 28

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On the right side of the Ultima Dual Airflow Pressure Sensor™, there are four, 20-turn screws that
allow you to adjust both the gain and baseline settings for both the nasal and oral outputs. The
baseline is set to zero volts in our factory. Under most circumstances, however, you will
NOT need
to make adjustments.
Gain adjustment screws
There are two gain adjustments screws: a nasal gain screw and an oral gain screw. The nasal
gain screw allows you to adjust the gain for all the nasal outputs. Similarly, you can adjust the
gain for all the oral outputs with the oral gain screw.
By adjusting the gain or sensitivity, you enlarge or reduce the size of the waveform on the
display of your recording system. You do not change the actual recorded signal.
By turning the gain screw clockwise, you increase the sensitivity to make the signal larger. By
turning the gain screw counterclockwise, you decrease the sensitivity to make the signal
smaller.
Baseline adjustment screws
The baseline is set to zero volts in our factory. Under most circumstances, however, you
will
NOT need to make adjustments.
If you do want to make adjustments, there are two baseline adjustments screws: a nasal
baseline screw and an oral baseline screw. The nasal baseline screw allows you to adjust
the baseline for all the nasal outputs. Similarly, you can adjust the baseline for all the oral
outputs with the oral baseline screw.
When you turn the baseline adjustment screw, you change the position of the waveform
on the display of your recording system. 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.
By turning the baseline screw clockwise, you move the baseline higher; that is, increase
the baseline voltage. By turning the baseline screw counterclockwise, you move the
baseline lower; that is, decrease the baseline voltage.
Caution:
Do NOT adjust the baseline without a voltmeter.