IEC07000247 V1 EN-US
Figure 70: Fibre-optic ports with ST type connectors
IEC07000248 V1 EN-US
Figure 71: G.703 codirectional port (RJ–45)
RJ–45 pin
Name
Direction
1
Tx+ (TIP-out)
From 21-216 transceiver to multiplexer
2
Tx- (RING-out)
From 21-216 transceiver to multiplexer
4
Rx+ (TIP-in)
From multiplexer to 21-216 transceiver
5
Rx- (RING-in)
From multiplexer to 21-216 transceiver
Metal house
Shield
Cable shield must be connected
Use a cable with twisted pairs and a high quality shield. Foil shielding alone is not enough. Rx+
and Rx- should form one twisted pair, and Tx+ and Tx- should form another. A Cat5 S/FTP
cable (shielded/foil-twisted pair) used, for example, in ethernet communication is a good
Section 5
1MRK 505 382-UEN E
Communication set-up
72
Communication set-up, 670/650 series
Application Guide
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Summary of Contents for Relion 670 series
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