Chapter 10
10-4 BiPAP Focus Ventilator Service Manual © Respironics, Inc. REF 1029568 Rev B
Specifications
WARNING: Use only Respironics-supplied cables with the nurse call station/serial
communications connector.
Options
Display Units Range: cmH
2
O, hPa, or mbar
Alarm Volume Range: OFF, or minimum
volume, to maximum volume, in
5 discrete settings.
Contrast Range: 20% to 100%
Brightness Range: 10% to 100%
Reverse Video Range: ON or OFF
Screen Lock Timer Range: ON or OFF
Nurse Call Station/Serial Communications Connector Pinout
Pin Signal
Nurse Call Station
1
6
9
Nurse call station common
Normally open (NO) during normal (non-alarm) operation
Normally closed (NC) during normal (non-alarm) operation
Serial Communications
2
3
4
5
7
8
Respironics advanced serial protocol (RASP) RS-232 Transmit (Tx)
RASP RS-232 Receive (Rx)
Not used
RS-232 signal ground
RS-232 Tx (reserved for Respironics Technical Support)
RS-232 Rx (reserved for Respironics Technical Support)
NOTE:
• When pins 1 and 6 are used, the relay is open during normal operation,
and closed during an alarm condition including loss of power.
• When pins 1 and 9 are used, the relay is closed during normal
operation, and open during an alarm condition including
loss of power.
• Female DB9 connector pin configuration:
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