User Manual
ADCP-75-150 • Preliminary Issue A • March 2003 • Section 1: Overview
Page 1-3
©
2003,
ADC
Telecommunications,
Inc.
2.2 Base Transceiver Station to Host Unit Interface
The
HU
interfaces
with
the
BTS
which
provides
the
RF
channel
inputs
and
outputs
for
a
designated
sector.
The
BTS/HU
interface
may
require
installation
of
the
Digivance
Interface
Panels
which
are
accessory
products
for
the
Digivance
system.
The
Interface
Panels
are
used
when
multiple
BTS’s
and
multiple
Host
Units
require
connection
or
when
RF
attenuation
is
needed
between
the
BTS
and
Host
Unit.
Two
types
of
Interface
Panels
are
available:
the
Conditioning
Panel
and
the
Duplexing
Panel.
The
Conditioning
Panel
provides
attenuation
of
the
forward
path
signal
to
the
level
required
for
input
to
the
Host
Unit.
The
Conditioning
Panel
also
provides
forward
and
reverse
path
combining
and
splitting
(as
needed)
to
enable
multi-BTS
to
single
Host
Unit,
multi-BTS
to
multi-Host
Unit,
or
single
BTS
to
multi-Host
Unit
configurations.
A
typical
single
BTS
to
multi-Host
Unit
configuration
is
shown
in
Figure 1-2.
Figure 1-2. BTS/HU Interface with Conditioning Panel
The
Duplexing
Panel
is
used
in
conjunction
with
the
Conditioning
Panel
when
the
BTS
provides
a
duplexed
forward
and
reverse
path
RF
connection
as
shown
in
Figure 1-3.
The
Duplexing
Panel
separates
the
duplexed
forward
and
reverse
path
signals.
This
allows
the
BTS
to
be
connected
to
the
Host
Unit
which
has
separate
forward
and
reverse
path
RF
ports.
18514-A
RF
RF
RF
RF
BASE
TRANSCEIVER
STATION
COAXIAL
CABLES
COAXIAL
CABLES
HOST UNIT
HOST UNIT
HOST UNIT
CONDITIONING
PANEL