Lantronix
SM4T4DPA Install Guide
33867 Rev. A
Page
19
of
29
Network Wiring Connections
The punch-down block is an integral part of many of the newer equipment racks. It is actually part of the patch
panel. Instructions for making connections in the wiring closet with this type of equipment follows.
Step 1. Attach one end of a patch cable to an available port on the switch, and the other end to the patch panel.
Step 2. If not already in place, attach one end of a cable segment to the back of the patch panel where the punch-
down block is located, and the other end to a modular wall outlet.
Step 3. Label cables to simplify future troubleshooting. See “
Cable Labeling and Connection Records
” on page
24
.
Network Wiring Connections
Fiber Optic SFP Devices
An optional Gigabit SFP transceiver can be used for a backbone connection between switches, or for connecting to
a high-speed server.
Each single-mode fiber port requires 9/125 micron single-mode fiber optic cable with an LC connector at both ends.
Each multimode fiber optic port requires 50/125 or 62.5/125 micron multimode fiber optic cabling with an LC
connector at both ends.
Warning
: This switch uses lasers to transmit signals over fiber optic cable. The lasers are inherently eye safe in
normal operation. However, user should never look directly at a transmit port when it is powered on.
Warning
: When selecting a fiber SFP device, considering safety, make sure that it can function at a temperature
that is not less than the recommended maximum operational temperature of the product. You must also use an
approved Laser SFP transceiver.
Step 1. Remove and keep the LC port’s rubber plug. When not connected to a fiber cable, the rubber plug should
be replaced to protect the optics.
Step 2. Check that the fiber terminators are clean. You can clean the cable plugs by wiping them gently with a
clean tissue or cotton ball moistened with a little ethanol. Dirty fiber terminators on fiber optic cables will impair the
quality of the light transmitted through the cable and lead to degraded performance on the port.
Step 3. Connect one end of the cable to the LC port on the switch and the other end to the LC port on the other
device. Since LC connectors are keyed, the cable can be attached in only one orientation.