Measure fiber link attenuation and transmit power, Power-up, hardware functions and leds, Power-up, hardware functions and leds -2 – CANOGA PERKINS 9151 Network Interface Device User Manual
Page 10

4. Install the interface modules in the single port slots:
a. Insert a module into a slot and push firmly on the center of the front panel. If it does not seat
properly, pull the module out, inspect for bent connector pins, and reinsert it.
b. When the module is firmly seated, hand-tighten the screws on the front panel.
Cabling for the 9151 includes the serial cable to the Terminal port, the Ethernet cable for a UTP port,
and the fiber optic cable to the Tx and Rx ports.
5. Plug the serial cable into the Terminal port on the front panel and your PC. For the pinout, see
Chapter 5, Specifications.
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.
6. 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.
7. Use canned air to blow any dust out of the female fiber coupler.
Caution:
To avoid damaging the fiber end-surface or connector, use extreme care when
installing or removing cables.
8. Plug in the optical cables with Tx to Rx, Rx to Tx orientation.
Caution:
To protect the Ethernet port from an intrabuilding lightning surge, use a properly
grounded shielded cable.
9. If the 9151 includes a UTP copper interface, plug the Ethernet cable into it.
10. Label each cable and connector with the signal name and direction.
Measure Fiber Link Attenuation and Transmit Power
Canoga Perkins recommends that you determine and record link attenuation and transmission power
before starting normal link traffic. The attenuation factor and transmission power identify potential
problems with links near the lower limit of receiver limitations.
For details on link attenuation and transmission power, see Chapter 4.
Power-Up, Hardware Functions and LEDs
9151 Network Interface Device
2-2