NELLCOR PURITAN BENNETT Symphony N-3000 Service Manual page 26

Section 3: Performance Verification
3-16
6. Rotate the knob to adjust the IR LED drive level indicated in the PULSE
RATE display to 255.
7. While watching the IR indicator on the SRC-2, confirm the setting by
pressing the UPPER ALARM LIMIT button. The LED intensity should
increase.
8. Rotate the knob to adjust the IR LED drive level indicated in the PULSE
RATE display to 0.
9. Press the UPPER ALARM LIMIT button. The IR LED should turn off.
10. Rotate the knob to adjust the IR LED drive level indicated in the PULSE
RATE display to 170.
11. Press the UPPER ALARM LIMIT button. The IR LED intensity should
increase.
12. Press the LOWER ALARM LIMIT button to return to the service mode
steady state.
13. Select menu item 34 by rotating the knob until "34" appears in the
SpO % display. Press the UPPER ALARM LIMIT button.
2
14. The SpO red LED drive value "170" is displayed in the PULSE RATE
2
display. The IR indicator on the SRC-2 is illuminated.
15. Rotate the knob to adjust the red LED drive level indicated in the
PULSE RATE display to 255.
16. While watching the RED indicator on the SRC-2, confirm the setting by
pressing the UPPER ALARM LIMIT button. The LED intensity should
increase.
17. Rotate the knob to adjust the red LED drive level indicated in the
PULSE RATE display to 0.
18. Press the UPPER ALARM LIMIT button. The RED indicator should turn
off.
19. Rotate the knob to adjust the red LED drive level indicated in the
PULSE RATE display to 170.
20. Press the UPPER ALARM LIMIT button. The RED indicator intensity
should increase.
21. Press the LOWER ALARM LIMIT button to return to the service mode
steady state.
22. Press the ON/STANDBY button to turn the N-3000 off.