Figure 8: Adjusting Satseconds Alarm Limit - Nellcor OxiMax N-550 Service Manual

N-550
18. Wait for POST to be completed. The %SpO
will be reset to the default values.
19. Press the Pulse Rate Alarm Limit button two times rapidly. Within three
seconds press and hold the Adjust Up button. Verify that the pulse rate
display cannot be adjusted above the upper alarm limit setting minus one
point.
20. Press the SatSeconds Alarm Limit button. Verify that the N-550 emits a
single beep and that the pulse rate display indicates an alarm limit of
"OFF" for three seconds. Verify that "SAS" is displayed in the %SpO
display.

Figure 8: Adjusting SatSeconds Alarm Limit

21. Press the SatSeconds Alarm Limit button. Within three seconds press the
Adjust Up button or the Adjust Down button. Verify that the pulse rate
display changes between 10, 25, 50, 100, and OFF.
22. Press the Power On/Off button to turn the N-550 off.
23. Press the Power On/Off button to turn the N-550 on.
24. Press and release the %SpO
display indicates an alarm limit of "100."
25. Press the %SpO Alarm Limit button two times rapidly. Verify that the
2
%SpO2 display indicates an alarm limit of "85."
26. Press and release the Pulse Rate Alarm limit button. Verify that the pulse
rate display indicates an alarm limit of "170."
Performance Verification
and pulse rate alarm limits
2
Alarm Limit button. Verify that the %SpO
2
2
2
15