Covidien Nellcor GR101704, Service Manual

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Calculating the Analog Voltage Output
Service Manual 7-17
7.5
Calculating the Analog Voltage Output
The data port provides analog voltage outputs between pins 6, 13, 14, and
ground (pin 10), which can be used to calibrate devices such as a chart record-
er. The voltage represents a specific measured parameter's current value. The
voltage differential varies proportionally from 0.0 to +1.0 VDC as the pin's
parameter varies over its full range of values. For example, as the current value
of SpO
2
varies from 0 to 100%, the voltage from pin 6 to ground (pin 10)
varies from 0.0 to +1.0 VDC. A voltage of 0.94 volts indicates a current SpO
2
value of 94.
Table 7-8. Analog Pinouts
Pin Parameter Parameter Range
6 Saturation 0 - 100%
13 Pulse Rate 0 - 250 bpm
14 Waveform 0 - 254 PAU