Installing A Token Ring Jitter Attenuator Card - 3Com CoreBuilder 5000 User Manual

3-12 I M
NSTALLING THE ODULE
Installing a Token
Ring Jitter
Attenuator Card
Only use the Jitter Attenuator Card with modules that make direct
RI/RO connections to non-CoreBuilder 5000 equipment. Each media
module is capable of carrying a Jitter Attenuator card for each set of
Ring In/Ring Out ports:
Dual Fiber Repeater Module – Supports two jitter attenuator
cards
Active Per-Port Media and Active Per-Module Media Module –
Support one card
Designed with a 30-pin connector, the Jitter Attenuator Card is easily
user-installable, and cannot inadvertently be placed on the Token Ring
Network Monitor Card connectors.
To install a Jitter Attenuator Card on a CoreBuilder 5000 Token Ring
Media Module:
1 Match the card's connector pins to the corresponding pins on the host
CoreBuilder 5000 Token Ring Media Module. Make sure that the
standoffs align with the holes on the card.
2 Seat the card's connector onto the module's connector.
3 Secure the card to the media module by tightening the two screws on
each end of the board (see
CAUTION: The Passive Media Module is shipped with a
factory-installed Jitter Attenuator Card. Do not remove this card. The
module does not function without it.
Figure 3-4 shows the typical orientation of a Jitter Attenuator Card in
relation to the socket and standoffs on CoreBuilder 5000 Token Ring
Modules.
Figure 3-4 illustrates the location of a second Jitter Attenuator Card on
the Dual Fiber Repeater Module.
Figure 3-4). Be careful not to over-tighten.