Symmetricom TimeHub 5500 System Manual

56 097-55501-01 Issue 6 – June 2003
1
TimeHub 5500 System Guide
1.7.6 Expansion Output Connector Modules
Two types of output connector modules are available for the expansion shelf.
One type provides 20 DS1 outputs; the other provides 20 CC outputs. These
cards are similar in design to the output connector cards used on the master
shelf, although the form factor of the expansion output connector modules is
different.
The cable connection from the output connector module is the same (form
factor and pinout) on the master and expansion shelf output connector
modules, so cabling used to connect master shelf outputs to a wirewrap
panel will also work on an expansion shelf. There are two options available
for cabling from expansion (or master) shelf output modules.
1. The flat ribbon cable (060-55591-01) can be used to connect any
TimeHub output connector module to the 80-output wirewrap panel
(090-41902-01).
2. To reduce cabling congestion that could be associated with wiring for
the 320 outputs available on the expansion shelf, a new cable and
wirewrap panel have been developed. The new cable provides
connection from any output connector module to the new wirewrap
panel. Each output module (990-5559x-02) includes this cable. A
primary benefit of the newer cable is that it is a small, round, flexible
cable which lends itself to taking up less space and being more
routable than the flat ribbon cable. The new wirewrap panel can
accommodate 160 outputs (compared with 80 on the older panel) so it
is also more space efficient. Note that the new cable/wirewrap panel
combination can be used with either a master or expansion shelf.
This wirewrap panel is included as part of the expansion shelf.
The expansion shelf (990-55505-01) includes one wirewrap panel (groups A
through D) and the expansion shelf (990-55505-02) includes two wirewrap
panels (groups A through D and groups E through H). Additional wirewrap
panels can be ordered separately. Wirewrap panel labeled A through D has
part number 093-55595-01, and wirewrap panel labeled E through H has
part number 093-55595-02.
Because of their smaller size (compared with master shelf output connector
modules), some extra care is needed when installing or removing an
expansion output connector module. To insert an expansion output
connector module:
• Align the module-to-shelf connector (side opposite to the two
spring-loaded screws) with the connector on the shelf.
• Once aligned, carefully push the card in by pressing either on the
corners of the board or the screws at top and bottom of the module.
Ensure that the module slides onto the connector.

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English