Unison Component Installation Procedures
7-14
InterReach Unison Installation, Operation, and Reference Manual
CONFIDENTIAL
D-620003-0-20 Rev J
Connecting the Fiber Cables to the Main Hub
Considerations:
• Before connecting the fiber cables, confirm that their optical loss does not exceed
the 3 dB optical budget.
• If you are using fiber distribution panels, confirm that the total optical loss of fiber
cable, from the Main Hub through distribution panels and patch cords to the
Expansion Hub, does not exceed the optical budget.
• Make sure the fiber cable’s connectors are SC/APC (angle-polished). Using any
other connector type will result in degraded system performance and may damage
the equipment. (You can use an SC/APC pigtail if the fiber cable’s connectors are
not SC/APC. Refer to“Fusion Splicing of Fiber and Pigtail” on page 7-33. Or, you
can change the fiber’s connector to SC/APC.)
NOTE:
Observe all Fiber Port Safety Precautions listed in Section 7.2.3 on page 7-5.
To clean the fiber ports:
You can clean the Hub’s fiber ports using canned compressed air or isopropyl alcohol
and foam tipped swabs.
Considerations:
• If using compressed air:
• The air must be free of dust, water, and oil.
• Hold the can level during use.
• If using isopropyl alcohol and foam tipped swabs:
• Use only 98% pure or more alcohol
Procedure using compressed air:
1.
Remove the port’s dust cap.
2.
Spray the compressed air away from the unit for a few seconds to clean out the
nozzle and then blow dust particles out of each fiber port.
Procedure using isopropyl alcohol:
1.
Remove the connector’s dust cap.
2.
Dip a 2.5mm lint-free, foam-tipped swab in isopropyl alcohol and slowly insert
the tip into the connector.
3.
Gently twist the swab to clean the port.
4.
Insert a dry swab into the port to dry it.
Additionally, you can use compressed air after the alcohol has completely evapo-
rated.
