Mallinckrodt NPB-190 Manuale dell'Operatore Scaricare il pdf (Pagina 86)

Appendix C: Data Port Protocol

Table 7: Voltage between pins 10 and 11

Alarm State

Nurse Call

Polarity Setting

Voltage from pins

10 to 11

No current alarms Normally high +5 to +12 VDC

Alarm condition Normally high -5 to -12 VDC

No current alarms Normally low -5 to -12 VDC

Alarm condition Normally low +5 to +12 VDC

Pins 7 and 15 provide a relay that closes when an alarm is

sounding on the monitor

. Pins 8 and 15 provide a relay that opens

when an alarm is sounding

. Pin 15 is a common lead for both

relays

. The relay operates whether the monitor is operating on AC

power or battery.

ANALOG OUTPUTS

The NPB-295 data port also provides analog voltage outputs

between pins 6, 13, 14, and ground (pin 10), which can be used to

calibrate the NPB-295 data port voltages with 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 8.

Table 8: 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 %SpO2

value of 94.

1 2 ... 81 82 83 84 85 86 87

Nessun commento

Mallinckrodt NPB-190 Manuale dell'Operatore Pagina 86