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7-13
D-620003-0-20 Rev J
CONFIDENTIAL
Unison Component Installation Procedures
7.4.1
Installing a Main Hub
CAUTION:
Install Main Hubs in indoor locations only.
Installing a Main Hub in a Rack
Install the Main Hub (1U high) in a standard 19 in. (483 mm) equipment rack. Allow
clearance of 76 mm (3 in.) front and rear, and 51 mm (2 in.) on both sides for air cir-
culation. No top and bottom clearance is required.
Consideration:
• The Main Hub is shipped with #10-32 mounting screws. Another common rack
thread is #12-24. Confirm that the mounting screws match the rack’s threads.
To install the hub in a rack:
1.
Insert spring nuts into the rack where needed or use existing threaded holes.
2.
Place the Main Hub into the rack from the front.
3.
Align the flange holes with the spring nuts installed in Step 1.
4.
Insert the mounting screws in the appropriate positions in the rack.
5.
Tighten the mounting screws.
Rack-mounting Option
You can flip the rack mounting brackets, as shown in Figure 7-1, so the hub can be
mounted 76 mm (3 in.) forward in the rack.
Figure 7-1
Mounting Bracket Detail
Installing an Optional Cable Manager in the Rack
• Using the screws provided, fasten the cable manager to the rack, immediately
above or below the Main Hub.
