ADTRAN Tracer 2 x E1 - Manual (Page 11)

INTRODUCTION
The Dual E1 version of TRACER provides two, individual E1 transports via a 2.4 GHz or 5.8 GHz,
direct sequence, spread spectrum microwave link. The transmitter output power is 20 dBm maximum
while the receiver sensitivity is -89 dBm @ 2.4 GHz and -87 dBm @ 5.8 GHz. System performance is
determined, in part, by the engineering of the microwave link. Each TRACER radio is comprised of two
components – the baseband processor and the radio frequency converter (RFC). The E1 interfaces
(G.703, G.704 compliant) are provided on the back of the baseband processor, which is mountable in a
515 mm rack. The radio frequency converter is rackmountable adjacent to the baseband processor or
mastmountable in a weatherproof enclosure, located up to 110 meters apart, using RG-8 style coax. A
single coaxial cable connects the baseband processor (via a Type N connector) to the RFC and another
coaxial cable connects the RFC to the antenna (via a Type N connector).
Applications
Any application that would typically use metallic E1 as a transport can use the TRACER instead. Figure
1-1 illustrates a typical application.
In addition to telephony applications, TRACER can be used in data communications such as inter-
networking, video conferencing, and telemetry.
Spread Spectrum
Spread spectrum is a form of communication in which the bandwidth of a message signal is intentionally
increased or “spread.” There are two methods of spreading -- frequency hopping and direct sequence.
TRACER employs direct sequence spread spectrum.
S
ECTION
1
TRACER D
ESCRIPTION
TRACER 2 x E1 User’s Manual 1
Figure 1-1. Typical Application
Terminal
VT-100
E1 Equipment
RS-232
Antenna Antenna
IF Cable
RF Cable
TRACER Baseband
Processor
E1, Rackmounted RFC
TRACER Baseband
Processor
E1 E1
E1 Equipment
E1, Mastmounted RFC
Rackmount RFC
RF Cable
Rackmount RFC
E1 E1