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1 - 2 ONline 10BASE-T Security Module Installation and Operation Guide
❑ Features 'hot swap' capability so that you can install or remove the
module without having to power down the concentrator
In addition, the Security Module allows you to disable Link Integrity, which
allows the module to be connected to equipment that does not conform to
the 10BASE-T standard.
Before installing the Security Module into the ONline System Concentrator,
read the ONline System Concentrator Installation and Operation Guide.
Theory of Operation
The Security Module incorporates repeaters and twisted pair transceivers in
its hardware:
– Repeaters restore phase and frequency. Repeated signals
synchronize to the system clock and enter on the ONline
concentrator's TriChannel™ backplane. Outgoing signals
from the TriChannel backplane are sent directly to
transceivers to be transmitted to twisted pair link
segments.
– Transceivers receive and restore amplitude to incoming
signals.
Application
Attach the Security Module to a patch or punchdown block using bundled
25-pair or 12-leg hydra cables. This provides connections for the 12 twisted
pair ports, as shown in Figure 1-1.