Remote PHY DOCSIS node installation
Viewing the laser output with optical instruments, such as a magnifier or microscope, within a
distance of 100 millimeters (four inches) may pose an eye hazard.
1. Attach an ESD-preventive wrist strap to your wrist and to the ESD ground connector or a bare metal
surface on your chassis.
2. Remove the SFP Transceiver Module from its protective packaging.
Do not remove the optical bore dust plugs until directed to do so later in the procedure.
3. Find the send (TX) and receive (RX) markings that identify the top side of the SFP transceiver.
On some SFP transceivers, the TX and RX marking might be replaced by arrowheads that point from
the SFP transceiver connector (transmit direction or TX) towards the connector (receive direction or
RX). BiDi SFP transceivers have a single optical port that accommodates both transmit and receive
functions.
4. Position the SFP transceiver in front of the socket opening and insert the SFP transceiver into the
socket until you feel the SFP Transceiver Module connector snap into place in the socket connector.
Ensure that you are installing the SFP transceiver in the correct orientation for your Harmonic device.
Result: You are now ready to remove the optical bore dust plugs; follow these guidelines when doing
so:
◦ Always keep the protective dust plugs on the unplugged fiber-optic cable connectors and the
transceiver optical bores until you are ready to make a connection.
◦ Always inspect and clean the LC connector end-faces just before you make any connections.
◦ Always grasp the LC connector housing to plug or unplug a fiber-optic cable.
5. Perform the following sequence as quickly as possible:
a. Remove the dust plugs from the network interface cable LC connectors and from the optical bore of
the SFP+ transceiver in port SFP1.
Save the dust plugs for future use. Note again that this procedure describes only the recommended
connection of the fiber cables to the SFP+ transceiver in port SFP1.
b. Immediately attach the network interface cable LC connector to the SFP transceiver (in port SFP1).
c. Connect the fiber cables to the SFP+ transceiver (in port SFP1).
39 Installation Guide
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