User's Manual

EMS Wireless Operator’s Manual

EkoLink Plus Fiber Optic DAS

1.0 GENERAL INFORMATION

The EkoLink Plus Fiber Optic Distributed Antenna System (DAS), provides excellent

signal coverage of most all large buildings, multiple buildings, airports, convention

centers as well as large outdoor environments such as university campuses, rural

stretches of highway, etc. With the correct selection of equipment, this can include a

combination of outdoor and in-building coverage for multi-building office parks, etc.

The EkoLink Plus System offers these general features:

• Remote alarming through the hub unit. This allows technicians to monitor

system performance remotely via telephone line and computer with modem and

terminal software.

• Truly “plug and play” operation, with a totally automatic software set-up

sequence, in the hub and all remote units, or manual control capability for

specific setups.

• Remote units have true automatic gain control to allow compensation for RF

source variations, optical loss, or other variations in power level.

• The monitoring and control of the system occurs with a direct connection to a

laptop computer, wireless modem, or via a wireline option for remote access.

• The system uses single mode fiber optic cable to connect the hub to the

remote(s). This eliminates the large signal losses inherent in long runs of coax or

CAT 5 (twisted pair) cables used in other systems. For this reason, very long (up

to five kilometers) fiber optic cables can be used to provide coverage very far

away from the hub unit in large complexes of buildings or large outdoor areas.

• The unit operates with +20 dBm RF donor signal level, which is conveniently

obtained via direct coaxial cable launch from a BTS with appropriate attenuators.

The advantage of using a dedicated micro BTS for the DAS is dramatically

increased system capacity within the covered building. The BTS interface is a

pair of coaxial connections to independent receive and transmit ports. Optionally

an interface is available to connect to a duplexed BTS output.

• The Eko Link Plus is a band selective Fiber Optic Distributed Antenna System

(DAS), designed to be fully compliant with GSM-AMPS-TDMA-CDMA standards.

• Standard downlink path output power is 2 watts (+33 dBm), 4 watts (+36 dBm), 8

watt (+39 dBm) or 20 watt (+43 dBm) composite. The uplink path provides an

approximate 3 dB system overall gain.

• The EkoLink Plus can be optionally configured with two independent passbands

for each radio frequency path. This means that two PCS bands can be covered