User's Manual

EMS Wireless Operator’s Manual

EkoLink II

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

interface to the user’s antennas. 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 eight 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.

Frequent referral to the Functional Overview section of this manual with its detailed

photographs will facilitate installation of the system.

1. One optical fiber is required for each Antenna unit; each Hub can connect to

up to four 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.

(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: