Cable Connections
124 7705 SAR-M Chassis Installation Guide
Fiber Cables
Fiber-optic cables are routed in a similar fashion to Ethernet and copper wire cables (see
Figure 29). Cables are routed to the left or the right of the chassis.
Hardware required:
• fiber cable boot (optional)
• cable ties (optional)
To attach fiber cables:
Step 1. Attach the cable to the SFP port connector on the front of the router. If necessary,
attach the fiber cable boot according to the manufacturer’s instructions.
Step 2. Route the cables to the left or the right of the chassis. If desired, loosely bundle the
cables together using a cable tie. Do not over-tighten the cable tie.
Step 3. Attach the other end of the fiber cable to the equipment.
Shield Ground Connections
To maintain EMC compliance, cables that are shielded and grounded at both ends must be
used with all the electrical interfaces on the router.
To meet surge protection requirements, the shield of any open-ended cable (at the far end)
must be grounded to a convenient chassis ground point, such as the equipment rack.
Warning:
• Fiber cables are sensitive to bending, twisting, and general over-exertion. Extreme
caution is recommended when handling fiber cable.
• In order to ensure that the minimum fiber bend radius of 1.2 in. (3.0 cm) is maintained
within the allowable space, an open-angled 90º boot such as TYCO 1374737-x or
equivalent is recommended. The boots must be installed and oriented during fiber
termination.
• Observe proper fiber connector handling with respect to the use of dust covers and
cleaning.
Note: Arrange the cables such that they do not impede the insertion or removal of other
equipment in the rack.
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