CANOGA PERKINS 9145 Network Interface Device - Manual (Page 15)

Figure 10 – DC Power Connector Location
Caution: To avoid damaging the fiber end-surface or connector, use extreme
care when installing or removing cables.
6. Dirty optical connectors are a common cause of link loss or attenuation problems,
especially for single mode fiber (SMF). Clean the connectors before plugging in a cable
and whenever there is a significant or unexplained light loss. To prevent contamination,
always install protective dust covers on unused fiber optic connectors.
a. Wipe the ferrule and the end-face surface of the male fiber coupler with a lint-
free, isopropyl alcohol pad from a fiber cleaning kit.
b. Use canned air to blow dust out of the female fiber coupler.
7. Connecting Optical Fiber to Optical Interface Modules:
a. Plug in the optical cables with Tx (optical output) to Rx (optical input), Rx to Tx
orientation.
8. Connecting Ethernet Cables to UTP Interface Modules:
a. Plug the shielded Ethernet Cable into the UTP Connector on the Interface
Module.
b. Be sure the locking tab properly seats.
c. If the locking tab is broken or missing, replace the cable.
Caution: To maintain Lighting and Power Shorting protection, always use
Ethernet Cables with a proper Ground Shield cable and connector.
9. Canoga Perkins recommends you label the cables with the circuit number or other
identifier and the signal direction on optical cables (TX or RX).
10. Canoga Perkins recommends that you determine and record optical link attenuation
and transmission power before starting normal link traffic. The fiber optic cable optical
attenuation and Laser output power determine receive optical power level at the
receiving device. Reductions in Laser power or increases in optical loss on the fiber
optic cable can cause degraded performance and link outages. For details on link
attenuation and Laser output power, see Chapter 4.