Philips MX400 - Setting Up Tone Modulation; Setting the QRS Volume; Calculating SpO2 Difference

9 Monitoring SpO2
201
Setting Up Tone Modulation
If tone modulation is on, the QRS tone pitch lowers when the SpO
2
level drops. Remember, the QRS
tone is derived from either heart rate or pulse depending on which is currently selected as the active
alarm source.
In the
Setup SpO₂ menu, select Tone Modulation to switch between Yes (for on) and No (for off).
Tone modulation is licensed under US patent US 4.653.498 from Nellcor Puritan Bennett
Incorporated.
Setting the QRS Volume
In the Setup SpO₂ menu, select QRS Volume and set the appropriate QRS tone volume.
Calculating SpO2 Difference
When a second SpO
2
measurement is present (either through the SpO
2
module or through an external
device), the monitor displays both SpO
2
values, and calculates the difference between them. The
second value is subtracted from the first.
1 From the Main Setup menu, select Measurements.
2 From the Setup ΔSpO₂ menu, select First SpO₂.
3 Choose the first measurement source.
4 Select Second SpO₂.
5 Choose the second measurement source.