Description Of Equipment; Type Of Equipment; Purpose Of The Equipment; Table 1-1 - Dla Part Numbers - Andrew 2400 Operation And Maintenance Manual

385700-4006-006

1.3 DESCRIPTION OF EQUIPMENT

The Radio Communications Network consists of Base and Mobile Radio Communication
Systems (RCS) and a Wayside Antenna System. The Distribution Line Amplifier (DLA) is part
of the distributed Wayside Antenna System based on leaky-feeder cable RADIAX
used to compensate for attenuation losses in the cable by providing bi-directional amplification
of signals. The DLA also includes a direction control signal and status signals to monitor
amplifier operation.

1.3.1 Type of Equipment

The DLA is a FCC approved bi-directional amplifier that is used with spread spectrum
transceivers that operate in the ISM 2400-2483.5 MHz frequency band. The 4 versions of the
DLA are shown in Table 1-1. The models differ in the number of RF ports and the type of
control interface.
Part Number
385700-4000-001
385700-4000-002
385700-4000-003
385700-4000-004

1.3.2 Purpose of the Equipment

The Distribution Line Amplifier provides selective frequency range amplification of both a
forward (downlink) and reverse (uplink) direction signals in RADIAX
defined as the direction of RF energy from the BDR at the wayside to the MDR. Reverse
direction is defined as the direction of RF energy from the MDR to the BDR. The signals that
appear on the line amplifier RF ports are determined by the USER controlled direction signal.
Document use is restricted to that described on cover
Description
4 port amplifier with LONWorks™ Interface
4 port amplifier with dry contact Interface
2 port amplifier with LONWorks™ Interface
2 port amplifier with dry contact Interface
Table 1-1 – DLA Part Numbers
INTRODUCTION
®
. DLA's are
®
cable. Forward is
1-5