Novametrix Medical Systems MARS PO2 TECH 2001 Service Manual page 38

Section 7
Electronic Tests
14. Press Quit followed by Yes. Verify a "Monitor performing self test" message is displayed then
is immediately followed by the main monitoring screen.
15. Press and hold the Contrast key. Verify the display contrast changes from light to dark. Set the
contrast to a normal level.
16. Press the Event key. Verify an "Event Marked" message is momentarily displayed then a
"Waveform Frozen" message is displayed. Press the Run softkey.
17. Set the averaging time to 2 seconds. Press the Menu softkey followed by the Avg and 2s
softkey.
18. Set the pulse beep to 5. Press the Audio softkey followed by the Pulse softkey. Use the Up /
Down arrow softkeys to set the pulse beep to 5. Press the Run softkey.
19. Set the TB500B to the settings in the chart. Verify the saturation values are within the specified
tolerance and an audible pulse beep is heard:
Note: Verify a visual (alert bar flashing) and audible alert condition after the saturation is set to
82. Press and hold the audio alert key. Verify the 2 minute silence LED momentarily turns on
then the audio off LED turns on (Blinking) and the audible alert is silenced.
20. Change the TB500B power switch to OFF. Verify an "Check Sensor Site" error message is
displayed.
21. Change the TB500B power switch to ON. Verify the error message clears and a saturation and
pulse value are displayed.
22. Set the TB500B Signal Attenuation to "1". Verify a "Sensor Off Patient" message is displayed.
23. Set the TB500B Signal Attenuation to "3". Verify the error message clears and a saturation and
pulse value are displayed.
24. Set the TB500B Saturation to "0". Verify a "Low Signal Strength" message is displayed.
25. Set the TB500B Saturation to "100". Verify the error message clears and a saturation and pulse
value are displayed.
26. Press the TB500B Red Open button. Verify a "Faulty Sensor" message is displayed.
27. Release the Red Open button. Verify the error message clears and a saturation and pulse value
are displayed.
28. Press the TB500B Infrared Open button. Verify a "Faulty Sensor" message is displayed.
32
Model 2001 Service Manual
RED ADC
IR ADC
TB500B Settings
Saturation Attenuation
100 3
82 3
62 7
72 7
92 7
5B32-88CB hex
3324-4CB7 hex
Board Parameters
Saturation
98 - 100
80 - 84
58 - 66
68 - 76
88 - 96
Procedure
Pulse Rate
60 ± 1
60 ± 1
60 ± 1
60 ± 1
60 ± 1
Rev. 01