User's Manual

EMS Wireless Operator’s Manual
EkoLink II
35
CAUTION
Do Not look directly at the end
of an optical connector which emits laser light!
The system normally operates without operator intervention. If any unit fails,
the line replaceable unit (Remote unit or Hub) should be replaced and the
system restored. A failed Remote unit can be removed and replaced with a
spare while the rest of the system is operating. A Hub replacement will
require temporary loss of signal to its associated Remotes.
One of the most important requirements is to maintain clean, undamaged
optical interfaces. Any optical connector which is not used must be covered
with a protective cap. There are four optical connectors for each Hub and one
optical connector for each Remote unit. These connectors are internal to the
units and not field serviceable. To ensure that the internal connectors are not
inadvertently damaged, just prior to mating an external optical fiber connector
to a Transceiver or Remote unit, the external connector should be cleaned as
described below.
3.1 Optical Connector Cleaning
Before each mating of Fiber Connectors, both connectors should be properly
cleaned. The following guidelines provide the user with some basic
techniques for maintain good fiber connector integrity.
1. It is very important to maintain clean, scratch-free optical connectors.
Whenever an optical cable is removed, place a protective cap over the
optical connector at both the cable end and at the Hub or Remote unit.
2. The less frequently Fiber Connectors are handled, the better their
integrity.
3. To clean an optical connector, gently wipe the tip of the ferrule with a
cotton swab moistened with alcohol, then blow the ferrule dry using dust-free
compressed air.
4. The optical connectors for the Hubs and the Remote units are
internal, and cannot be cleaned in the field.