GE Marquette 418793-001, Руководство по обслуживанию

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OXIMETER ASSEMBLY: Theory of Operations
8-4 APEX Telemetry Transmitter Revision D
401566-166
The following table gives examples of the oximeter readings:
The mathematics are fixed in the pulse oximeter hardware and software.
Thus, no field calibrations are needed or are possible. There are no
adjustable parts within the pulse oximeter that affect the calibration.
The function, f, depends on the wavelengths of the sensor LEDs. These
wavelengths are fixed by specified manufacturing processes and
materials. The sensors are checked for correct operation before shipping,
so no adjustment or calibration is needed or possible.
Because the pulse oximeter does all critical computations in software and
there are no critical parts to drift; no re-calibration is needed.
Example 1 Example 2
O
2
Hb = 96 O
2
Hb = 88
COHb = 0.5 COHb = 8
MetHb = 0.6 MetHb = 2
SpO
2
= 97 SpO
2
= 98
SaO
2
= 97.07 SaO
2
= 97.78