EMS
Wireless
EMS
Wireless
EkoMini Manual
12
divider to distribute signal throughout a building. The server antennas are frequently
very small, particularly at PCS. Many of them mount directly to acoustic ceiling panels,
or are embedded directly into the panel so they are totally invisible to the building
occupants.
The EkoMini
TM
optional remote alarming feature allows a simple means of remotely
alarms from the unit, as well as monitoring basic performance parameters of the
repeater. This is done using any standard computer with a terminal program, and a
modem. The alarms generally indicate performance situations that require correction,
such as no downlink signal present at the repeater output (if, perhaps, the donor BTS
goes off the air).
Up to three digital pager numbers and paging PIN numbers can be programmed for
use in case an alarm is issued. The unit will send an alarm to the first number when an
alarm occurs. Each additional number and alarm, which has a programmed sequence,
will be sent after the programmed delay. The delay, which is set, is a time
measurement from initially sending the first telephone call and alarm.
A small external power supply is supplied, which plugs into any 100 – 240 VAC, 47 –
63 Hz outlet. Both the repeater and the power supply are totally convection cooled,
with no cooling fans. No user maintenance is required.
EkoMini
Repeater, 70 dB
Gain
Yagi Donor
Antenna, 15
dBi gain
-50 dBm
-48
dBm
-63 dBm Received Signal Level from
BTS
+20 dBm
Indoor
Server
Antenna, 0
dBi gain
+16 dBm
50 feet of 1/2" Coax
Cable (2 dB loss)
Building Interior
100 feet of 1/2"
Cable, 4 dB
Cable Loss
Figure 1: Simple EkoMini
TM
System Design
