Mallinckrodt NPB-190 Manual del operador descargar pdf (Pagina 105)

Data Port Protocol

ANALOG OUTPUTS

The N-395 data port also provides analog voltage outputs

between pins 6, 13, 14, and ground (pins 5 or 10), which can be

used to calibrate instruments such as a chart recorder. The

voltage represents a specific measured parameter’s current value.

The voltage differential varies proportionally from 0 to 1 volt as

the pin’s parameter varies over its full range of values, as

indicated in Table 13.

Table 13: Analog Pinouts

Pin Parameter Parameter Range

6%SpO2 0 - 100%

13 Pulse rate 0 - 250 bpm

14 Pleth wave 0 - 255

For example, as the current value of %SpO2 varies from 0 to

100%, the voltage from pin 6 to ground (pin 10) would vary from

0 to 1 volt. A voltage of .94 volts indicates a current %SpO

value of 94.

The analog output calibration function can be accessed from the

main menu by pressing SETUP, NEXT, NEXT, ANALOG.

Selecting “0 VOLT” or “1 VOLT” causes that voltage to appear

at pins 6, 3, or 10. Selecting “STEP” causes the voltage to

increase from 0 to 1 volt at 1/10

-volt increments, with each step

lasting at least 1 second.

Qualified service personnel using the procedure described in the

N-395 service manual can perform calibration of the analog

output and the attached device.

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Mallinckrodt NPB-190 Manual del operador Pagina 105