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2.3.5 Equipment Interface System
USB_Hub board
The USB_Hub board is connected with the mother board. It is compatible with USB1.1
connectors and supports equipment hot plug. The UART signal output by the main board is
converted into RS422 signal by the USB_HUB board. It receives 5 VDC and 12 VDC inputs
from the power module, of which the 5 VDC is supplied to the USB interface board and the
12 VDC is outputted to the SMR connector through a fuse.
BNC It is a BNC connector used to output nurse call signals.
RJ 45 connector
It is a standard RJ45 connector, providing 10/100 BASE-TX Ethernet
communications channels. It connects an Ethernet network or a PC.
USB connector Connects devices with USB connector.
USB&POWER
connector
Provides RS232 and RS422 interfaces for the communication between main
board and SMR. It receives 5 VDC and 12 VDC inputs from the power
module, of which the 5 VDC is supplied to the USB interface board and the
12 VDC is outputted to the SMR connector through a fuse.
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