Setup Guide

Doc. No.
Rev.
Date
1.50
2022-08-17
Damm Cellular Systems A/S, Denmark
BS422 Installation and Setup guideline
BS422 Installation and setup guideline - Specifications subject to change without notice 5
Antennas
The outside antenna connected to this device must be installed on an outdoor permanent
structure.
L'antenne extérieure connectée à cet appareil doit être installée sur une structure
permanente extérieure.
Keep a separation of 6 meters/20 feet from all persons during normal operation or keep at
least the safety distance as shown in the previous table.
The margin of compliance for the antenna gain is 3 dB which then indicate the maximum
allowable antenna gain.
Notice
❖ Do not modify any part of this device for any reason
❖ Do not place any combustible material near the transceiver
❖ Do not spray any liquid over the device
❖ Ensure that the power and antenna connections are securely made, using cables
recommended and with excess capacity for the power being utilized.
Installing more BS422 according to user manual and using DAMM filter and combiner
systems together with tested and verified cabling, connectors and antennas – will avoid any
problems with intermodulation. Installation of the maximum number of transceivers will not
extend the maximum range of calculated output power and intermodulation according to the
DAMM products sheets. Any BS-type determines how many TR modules can be installed
and the whole BS design has taken the Tetra specification on the subject matters into
consideration. This is e.g. reflected in all DAMM EU certificates / grants and test reports of
which you can find on our web page.
Please notice that any BS type / mode shipped to end customer is fully assembled and tested
from factory. No assembly is needed in the field except setting up the BS rack or mount the
outdoor unit putting on power and LAN/WAN connections.
The installation and user manual refer to product sheets for any unit in the rack which can be
accessed on our web page / restricted area for customers and any customer/partner can
request a paper copy hereof.
Installing DAMM BS422 according to this installation manual – will prevent issues with RF
exposure according to our certifications (see web page).
DAMM User Manual describes installation practices and contains section with recommended
BS hardware. Recommended external hardware, cables etc. is tested and verified with
DAMM BS-equipment.