GE Dash 3000 Service Manual page 270

Masimo SET Pulse Oximetry (SpO
PIN SIGNAL NAME
1 DETECTOR_ANODE
2 DETECTOR_CATHODE
3 NC
4 NC
5 IR_LED_CATHODE
6 OUTER_SHIELD
7 INNER_SHIELD
8 NC
9 NC
10 RED_LED_CATHODE
11
9-46
Assembly Drawings: Port Connections
) Cable Connector
2
The pulse oximetry function uses an 11-pin, female, "Nicolay-style"
pulse oximetry connector. Special keying only allows the use of Masimo
LNOP (low noise) probes. The pinout is as follows:
I/O DESCRIPTION
I Photodetector
I Photodetector cathode
– Not connected
– Not connected
O Anti-parallel LED drive
– Inner cable shield - surrounds Detector_Anode and
Detector_Cathode signal pair. Terminated directly
to GND_ISO_MAIN via both wide copper traces
and the silver epoxy shield layer of the flex circuit.
– Inner cable shield - surrounds Detector_Anode and
Detector_Cathode signal pair. Terminated directly
to GND_ISO_MAIN via both wide copper traces
and the silver epoxy shield layer of the 2006782-
001 flex circuit.
– Not connected
– Not connected
O Anti-parallel LED drive
– Outer cable shield - surrounds entire SpO2 cable.
Terminated directly to GND_ISO_MAIN via silver
epoxy shield layer of 2006782-001 flex circuit.
Dash 3000/4000 Patient Monitor
2000966-339
DIAGRAM
541A
Revision A