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Performance Verification
12
1. Turn the N-550B on by pressing the Power On/Off button.
2. Wait for POST to be completed.
3. Press and release the SpO
4. Verify that the N-550B emits a single beep and the %SpO
indicates an upper alarm limit of "100" for about three seconds.
5. Verify that "HI" is displayed in the Pulse Rate display.
Note: "HI" in the display window indicates an upper alarm limit that is
being adjusted, and a "LO" in the window indicates that a low alarm
limit is being adjusted.
Figure 4: Adjusting High %SpO
6. Press the SpO
Alarm Limit button. Within 3 seconds, press and hold
2
the Adjust Down button. Verify that the %SpO
minimum of one point above the %SpO
Note: A decimal point to the right of the value in either window display
indicates that the alarm limits are not power-on default values.
7. Press the SpO
Alarm Limit button two times rapidly (twice within three
2
seconds). Verify that the N-550B emits two beeps and that the %SpO
display indicates "85" for three seconds. Verify that "LO" is displayed in
the pulse rate window.
Alarm Limit button.
2
Alarm Limit
2
display reduces to a
2
low alarm limits setting.
2
display
2
2
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