GE Dash 3000 Service Manual page 269

GE Pulse Oximetry (SpO
PIN SIGNAL NAME
1 NELLCOR_RCAL
2 IR/RED*
3 RED/IR*
4 NC
5 POX+
6 SHIELD
7 NELLCOR_RCAL_RETURN
8 MARQUETTE_PROBE*
9 POX–
10 NELLCOR_PROBE*
11 GND
Revision A
Assembly Drawings: Port Connections
) Cable Connector
2
The pulse oximetry function uses an 11-pin, female connector. The
pinout is as follows:
I/O DESCRIPTION
O Nellcor probe characteristics ID resistor
O Anti-parallel LED drive
(low=RED, high=IR)
O Anti-parallel LED drive
(low=IR, high=RED)
– Not connected
I Photo detector anode
– Cable shield
I Return for probe characteristics ID resistor
I Marquette probe select
I Photo detector cathode
I Nellcor probe select
– Ground reference for pins 8 and 10
Dash 3000/4000 Patient Monitor
2000966-339
DIAGRAM
587A
9-45