6.11 ETHERNET BOARD
Figure 23: Ethernet board
This is a communications board that provides a standard 100-Base Ethernet interface. This board supports
one electrical copper connection and one fibre-pair connection.
There are several variants for this product as follows:
● 100 MHz Ethernet board
● 100 MHz Ethernet with on-board modulated IRIG-B input
● 100 MHz Ethernet with on-board demodulated IRIG-B input
● 10 MHz Ethernet board
Two of the variants provide an IRIG-B interface. IRIG-B provides a timing reference for the unit – one board
for modulated IRIG-B and one for demodulated. The IRIG B signal is connected to the board with a BNC
connector.
Chapter 3 - Hardware Design MiCOM P747
52 P747-TM-EN-1
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