Ventilation Considerations; Rack Mounting The Ssu-2000; Ssu-2000 Shelf - Symmetricom SSU-2000 User Manual

Chapter 2 Installing the SSU-2000

Rack Mounting the SSU-2000

All cables connected to the SSU-2000 should be shielded with metal connector
shells. The connectors on the rear panel of the shelf are shielded, with the shields
connected to frame ground. Follow local procedures for shield grounding. The
screws on all cables must be securely fastened to their corresponding connectors
on the rear of the unit. While the unit is in operation, there must be a module or
blank panel installed in every slot. Also, the captive screws, located at the top and
bottom of the module panel, must be properly secured.
Caution: To maintain EMC compliance, use only properly shielded
cabling on all telecom signal wiring, including I/O, clocks, and
Ethernet connections. Ensure that connections are appropriately
grounded.

Ventilation Considerations

For proper ventilation, there should be at least 2 RU (3 inches, 7.6 cm) of free space
above and below the shelf.
Caution: To avoid excessive heat build-up resulting in equipment
damage, provide proper ventilation and cooling of the equipment.
Rack Mounting the SSU-2000
The SSU-2000 shelf, when installed, occupies 10.5 in (26.7 cm) of vertical rack
space, has a depth of 12 in (30.5 cm), and a width of 19 in (48.3 cm). When
installing more than one SSU-2000, each unit must have at least one inch (2.5 cm)
of clearance above and below to ensure proper cooling. There should be at least
three inches (7.6 cm) of free space below the bottom shelf. It is recommended that
at least one I/O adapter panel be inserted between each unit.
Caution: Failure to provide proper ventilation can result in excessive
heat build-up resulting in equipment damage. Symmetricom suggests
that you insert an I/O adapter panel between shelves. See
2-1

SSU-2000 Shelf

The shelves mount flush to the rack or at distances of either 2 inches (5.1 cm) or
5 inches (12.7 cm) from the front of the rack. An SSU-2000 rack mounting diagram
is shown in Figure
1. Attach a mounting bracket to each side of the shelf by aligning two columns
(three holes per column) of the bracket with the holes on the side of the shelf.
62 SSU-2000 User's Guide
.
2-1.
Figure
12713020-002-2 Revision F.01 – January 2007