Figure 3-5: Adjusting High Heart Rate Alarm Limit; Figure 3-6: Adjusting Low Heart Rate Alarm Limit - Nellcor NPB-190 Service Manual

Section 3: Performance Verification
3-4
2. Press the Upper Alarm Limit button. Press and hold the Adjust Down
button. Verify that the %SpO
Note: A decimal point to the right of the value in either display indicates that
the alarm limits are not power-on default values.
3. Press the Lower Alarm Limit button. Verify that the monitor emits a single
beep and that the %SpO
seconds. Verify that three dashes are displayed at the bottom of the pulse
rate display window.
Figure 3-4: Adjusting Low %SpO
4. Press the Lower Alarm Limit button. Press and hold the Adjust Down
button and verify that the %SpO
Press and hold the Adjust Up button and verify that the %SpO
cannot be raised past the upper alarm limit setting of "85".
5. Press the Upper Alarm Limit button two times rapidly (twice within 3
seconds). Verify that the monitor emits two beeps, the pulse rate display
indicates an alarm limit of "170", and that the %SpO
shows three dashes at the top for about 3 seconds.

Figure 3-5: Adjusting High Heart Rate Alarm Limit

6. Press the Upper Alarm Limit button two times rapidly. Press and hold the
Adjust Down button. Verify that the pulse rate display reduces to a
minimum of "40".
7. Press the Lower Alarm Limit button two times rapidly. Verify that the pulse
rate display indicates an alarm limit of "40" and that the %SpO
window shows three dashes at the bottom for 3 seconds.

Figure 3-6: Adjusting Low Heart Rate Alarm Limit

8. Press the Lower Alarm Limit button two times rapidly. Press and hold the
Adjust Down button. Verify that the pulse rate display reduces to a
minimum of "30".
9. Press the Lower Alarm Limit button two times rapidly. Press and hold the
Adjust Up button and verify that the pulse rate display cannot be adjusted
above "40".
display reduces to a minimum of "85".
2
display indicates an alarm limit of "85" for 3
2
display reduces to a minimum of "20".
2
Alarm Limit
2
display
2
display window
2
display
2