Alarm Volume Control - Nellcor OxiMax N-550 Service Manual

Performance Verification

Alarm Volume Control

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3. Connect a Nellcor Durasensor oxygen transducer (sensor), model
DS-100A, to the sensor cable.
4. Clip the DS-100A to the subject as recommended in the sensor's
directions for use.
5. Press the Power On/Off button to turn the N-550 on and verify that the
N-550 is operating.
6. The N-550 should stabilize on the subject's physiological signal in about
15 to 30 seconds. Verify that the oxygen saturation and pulse rate values
are reasonable for the subject.
1. Press and hold the Alarm Silence button for more than three seconds.
Verify the following:
• "Alarm Silence Duration Time" is displayed for approximately three
seconds.
• After three seconds:
• a steady tone is heard at the default volume setting
• the %SpO2 display indicates "VOL"
• the pulse rate display indicates the default setting of "4"
2. Press the Adjust Down button, while holding the Alarm Silence button,
until an alarm volume setting of "1" is displayed. Verify that the alarm
volume has decreased but is still audible.