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Specifications A - 3
Cable propagation velocity: >.585c
Host Interface: 3Com ONline System Concentrator bus interface standard
Installation Attachment: Two thumbscrews on the mounting bracket
Twisted Pair Connectors and Cables
There are many types of cables and connectors that you can use to link
your 10BASE-T Module to your network. These cables and connectors are
explained in the following sections. Use this information to ensure that the
cables and connecting hardware meet requirements. For proper operation,
use only approved cables when you install all equipment. This section is
divided into the following parts:
❑ Twisted Pair Connectors
❑ Twisted Pair Cables
Twisted Pair Connectors
The IEEE 802.3 10BASE-T standard for pin-outs must be used. The following
cable standard must be used. 10BASE-T uses 2 pairs of wire: pins 1 & 2 and
pins 3 & 6. If the pairs are not configured this way, the connection will not
work properly. Datagrade cable should have the following pin pairings:
❑ pins 4 and 5 are pair 1
❑ pins 3 and 6 are pair 2
❑ pins 1 and 2 are pair 3
❑ pins 7 and 8 are pair 4