GE Datex-Ohmeda S/5 Series - Ethernet Interface

Display Unit for F-CM(C)1 (Rev. 05), F-CM(C)REC1 (Rev. 01)
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Document no. M1144956-003
Figure 7 Central Processing Board, block diagram
2.6.1 Ethernet interface
The data transformer is designed by Datex-Ohmeda and it is hospital grade approved.
Adapter’s 10BASE-T is an interface with low-pass filters on the unisolated side of the
transformer. On the isolated side there is a common mode choke for both transmitting and
receiving lines.
The three LEDs on the board, which are not seen from the outside, indicate the following things:
activity on the network, collision detection and a good link in 10BASE-T interface.
The activity LED flashes when communication packets are detected in the Datex-Ohmeda
Network. The collision detection LED indicates a packet collision on the network. The collision
detection LED should flash only occasionally, otherwise there may be a physical layer
problem. The good link LED indicates whether or not the communication link to the HUB is
functional. The good link LED should always be lit.
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display_cntrl_proc_brd_digrm.vsd