User's Manual

EMS Wireless Operator’s Manual
EkoLite II
22
2.3 Pre-installation
Prior to installation, a carefully planned system layout should be documented. At a
minimum, this document should include the location of the Hub, the location of the
Remotes, the Antenna locations, the fiber locations and lengths, and the location of
the power supplies for both Hubs and Remotes.
The Hub is located at the Building Base Station or BTS. The Hub interfaces with
the user's PCS System. The Remote units are distributed in the building and
provide signal coverage. Optical fiber cables connect the Hub to the Remote units.
The Hub is typically powered by an AC power supply. The AC power supply will
power up to 16 Remotes.
In this section, instructions are provided for organizing the system layout before
installation. The installer or operator must make sure that certain requirements
have been met before beginning installation. In addition, all cables and fibers must
be labeled, and the entire system configuration must be documented. Steps for
this pre-installation set-up are given below.
1. Two optical fibers are required for each Antenna unit; each Hub can connect
to up to eight Remote units. Angle-polished SC/APC connectorized optical fiber
cable must be installed in the building. Any optical connector used between the
Hub and the Remote units should be an angle-polished connector specified for
return loss >55 dB. Fusion splices to connect fibers are also suitable. Flat
polished connectors anywhere along the optical fiber path will degrade the system
performance.
2. The customer must provide the following equipment for installation:
(a) Optical connector cleaning kit: cotton swabs, alcohol, dust-free
compressed air
(b) Crimping tool, mating connectors, and pin crimps for the DC
electrical connectors and alarm outputs at the Hub.
(c) Philips screwdriver
(d) Personal computer or laptop with terminal program such as
HyperTerminal.
(e) Volt Meter
3. Not essential, but useful for diagnostics are the following equipment:
(a) RF power meter
(b) Optical power meter