User Manual
Table Of Contents
- SECTION 1: Overview
- SECTION 2: Description
- SECTION 3: Host Unit Installation
- SECTION 4: Operation
- SECTION 5: Maintenance
- SECTION 6: General Information
- ABOUT THIS MANUAL
- RELATED PUBLICATIONS
- ADMONISHMENTS
- GENERAL SAFETY PRECAUTIONS
- STANDARDS CERTIFICATION
- LIST OF ACRONYMS AND ABBREVIATIONS
- SECTION 1: Overview
- SECTION 2: Description
- SECTION 3: Host Unit Installation
- 1 before starting installation
- 2 OSP Fiber Cable Installation Guidelines
- 3 WDM mounting procedure (optional accessory)
- 4 HU mounting procedure
- 5 Chassis ground connection
- 6 coaxial cable connections
- 7 optical connections
- 8 controller area network connections
- 9 service interface connection
- 10 external alarm system connections
- 11 dc power connections
- SECTION 4: Operation
- 1 before starting operation
- 2 turn-up system and verify operation
- 2.1 Turn-Up Procedure
- 2.2 Download HU and RU System Software
- 2.3 Determine Forward Path Input Signal Level
- 2.4 Enter Site Name and Site Number
- 2.5 Enter Host Forward Attenuation
- 2.6 Determine Output Signal Level at STM Antenna Port
- 2.7 Enter Remote Forward Attenuation
- 2.8 Enter Host Reverse Attenuation
- 2.9 Enter Host Forward and Reverse Delay
- SECTION 5: Maintenance
- SECTION 6: General Information
ADCP-75-126 • Issue B • April 2002 • Section 4: Operation
Page 4-15
©
2002,
ADC
Telecommunications,
Inc.
Figure 4-11. Remote Fwd Att Pop-Up Screen
6. Verify
that
the
appropriate
RF
output
signal
level
appears
in
the
RF
Pwr-VSWR
Low
section
(see
Figure 4-10).
This
is
primarily
a
reference
value
and
should
not
take
the
place
of
external
test
equipment
when
determining
the
power
level
of
the
composite
RF
output
signal.
Depending
on
the
modulation
type
and
number
of
channels,
the
EMS
software
may
report
a
power
level
that
is
higher
or
lower
than
the
actual
RF
output
signal.
2.8 Enter Host Reverse Attenuation
The
level
of
the
RF
signal
that
should
be
input
to
the
BTS
will
vary
depending
on
the
type
of
BTS,
the
receive
distribution,
and
the
number
of
channels
present.
To
interface
with
the
BTS,
the
reverse
path
signal
level
must
be
adjusted
to
provide
the
signal
level
required
by
the
BTS.
The
HU
provides
from
0
dB
to
+30
dB
of
gain
in
the
reverse
path.
Use
the
following
procedure
to
set
the
reverse
path
gain:
1. Check
the
BTS
manufacturer’s
specifications
to
determine
the
composite
signal
level
required
at
the
BTS
reverse
path
input
port.
2. Determine
the
overall
gain
and
loss
imposed
on
the
signal
by
the
antenna,
antenna
cable,
and
by
the
cables
that
connect
the
HU
to
the
BTS.
3. Determine
the
amount
of
gain
required
to
raise
the
reverse
path
signal
to
the
level
required
at
the
BTS.
4. Click
on
the
HOST
RF
tab.
The
HOST
RF
display
will
open
within
the
EMS
main
window
as
shown
in
Figure 4-12.
Note:
To
comply
with
Maximum
Permissible
Exposure
(MPE)
requirements,
the
maximum
composite
output
from
the
antenna
cannot
exceed
1000
Watts
EIRP
and
the
antenna
must
be
permanently
installed
in
a
fixed
location
that
provides
at
least
6
meters
(20
feet)
of
separation
from
all
persons.