Covidien Nellcor OxiMax N-600x, Руководство оператора

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Using the Nurse Call Interface
Operator’s Manual
85
When enabled, audible alarms signal the remote location. If the audible alarm has
been turned off or silenced, the nurse call function is also disabled.
Pin 11 on the data port is the RS-232 level nurse call signal and pin 5 or 10 is ground
(See Figure 71 on page 78). With no alarm condition, the voltage between pins 10
and 11 are -5 VDC to -12 VDC, or +5V DC to +12 VDC, depending on the option
chosen via the softkeys (either NORM+ or NORM-). With an audible alarm, the output
between pins 5 and 11 will reverse polarity.
Pins 7 and 15 provide a relay that closes when an alarm is sounding on the oximeter.
Pins 8 and 15 provide a relay that opens when an alarm is sounding. Pin 15 is
common, pin 7 is normally open, and pin 8 is normally closed. See
Rating of Nurse Call
Relay , page 122 for ratings.
Test the nurse call function prior to using it in your facility and whenever setting up
the OxiMax N-600x pulse oximeter in a location that uses nurse call. If an attached
OxiMax pulse oximetry sensor is not connected to a patient, the oximeter display
reads zeros and the oximeter remains in the Pulse Search Mode for five seconds, then
the oximeter displays three dashes [ - - - ] in the %SpO
2
and pulse rate area of the
screen. One way to test the nurse call function is to create an alarm condition (for
example, sensor disconnect) and verify activation of your facility's nurse call system.
Setting Nurse Call RS-232 Polarity
The nurse call polarity can be set to a positive signal (NORM +) on a oximeter alarm
condition or a negative signal (NORM -) on a oximeter alarm condition.
To set nurse call polarity
1. With the oximeter in the normal monitoring mode, press the SETUP softkey.
2. Press the NEXT softkey twice and then press the NCALL softkey.
Figure 84. Nurse Call Polarity Screen
3. Press the NORM + softkey OR press the NORM - softkey.
4. Press the EXIT softkey.
Table 12. Nurse Call Relay Pin States
Pin No Alarm or Alarm Silenced Audible Alarm Oximeter Off
7 NO Open Closed Closed
8 NC Closed Open Open