Nurse Call Setup - Nellcor OxiMax N-600x Service Manual

Data Port Interface Protocol

Nurse Call Setup

132
The voltage polarity for the Nurse Call, available at pins 11 and 5, can be selected
through the softkeys. NORM + sets the voltage to +5 VDC to +12 VDC and
NORM - sets the voltage to -5 VDC to -12 VDC when there is no audible alarm.
When an audible alarm occurs, these voltages switch polarity. This signal is
available only if the instrument is operating on AC power. For more information,
see Nurse Call on page 145.
To adjust the voltage polarity setting:
1. Turn on the monitor by pressing the ON/STANDBY button.
2. Press the SETUP softkey.
3. Press the NEXT softkey twice.
4. Press the NCALL softkey.
NORM + NORM -
5. Press the NORM+ (+5 to +12 VDC) or NORM- (-5 to -12 VDC) softkey as
required for your nurse call system.
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