Jitter Attenuator Card (6200D-Ja); Where To Go From Here - 3Com CoreBuilder 5000 User Manual

1-14 I
NTRODUCTION
Jitter Attenuator
Card (6200D-JA)
Where to Go From
Here
The optional Jitter Attenuator Card filters excessive jitter that may
accumulate in non-CoreBuilder 5000 equipment, protecting the
CoreBuilder 5000 networks from unwanted jitter build-up. It is
supported by all CoreBuilder 5000 modules that have Ring-In/Ring-Out
connection capability (Refer to the section titled
and Jitter Reduction on page 1-2 for more information).
The card has the following features:
Ensures the integrity of CoreBuilder 5000 Token Ring networks by
eliminating jitter from non-CoreBuilder 5000 device signals.
Allows the connection to other non-CoreBuilder 5000 rings where
jitter, or Phase Slope, may have built up to unacceptable levels. This
ensures error-free operation when interfacing with the CoreBuilder
5000 hub.
Connects to any CoreBuilder 5000 module supporting RI/RO trunk
ports
Configures automatically using media module-resident software to
the appropriate Ring-In or Ring-Out receive trunk, dependent on
Trunk "wrap" or "unwrap" mode
Use the Jitter Attenuator Card only with modules that make direct
RI/RO connections to non-CoreBuilder 5000 equipment. This saves you
the expense of the jitter attenuation circuitry when connecting to
other CoreBuilder 5000 rings.
Now that you are familiar with the features and architecture of
CoreBuilder 5000 Token Ring Media Modules, evaluate the environment
in which you plan to use this module. Chapter 2,
Expanding the Network, lists cabling considerations and configuration
examples specific to the CoreBuilder 5000 Token Ring Media Modules
in a CoreBuilder 5000 Integrated System Hub.
Active Port Retiming
Designing and