Bay Networks 5391 Guía de instalación Pagina 121

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B-3Remote Annex 2000 Hardware Installation Guide
Appendix B Cables and Connectors
Loopback Connectors
10Base2 Ethernet
Loopback
Connector
The 10Base2 loopback connector is a 22-Ohm BNC terminator plug.
The connector comprises a 22-Ohm resistor connected between the
BNC plug’s center coaxial line and shield.
10Base5 Ethernet
Loopback
Connector
The 15-pin male Ethernet 10Base5 loopback connector is equipped
with an LED that confirms the presence of the +12-volt transceiver
drive voltage.
Table B-1 shows this connector’s pins/signal
allocations.
Table B-1. 10Base5 Ethernet Loopback Connector Wiring
10BaseT Ethernet
Loopback
Connector
The 10BaseT loopback connector is an RJ45 plug with two pairs of
signals looped back.
Table B-2 shows this connector’s pins and
signals.
Table B-2. 10BaseT Ethernet Loopback Connector Wiring
Pin Number Signal Connects to Pin Number Signal
3 Transmit + 5 Receive +
10 Transmit – 12 Receive –
Pin Number Signal Connects to Pin Number Signal
1 Transmit + 3 Receive +
2 Transmit – 6 Receive –
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