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Chapter4
Alignment
MSF
5000
Instruction Manual
General Guidelines
General Guidelines
The following
procedures require the service technician or installer to have
a
basic
knowledge of
the
MSF
5000 operation.
Refer
to
Chapter
2
-
Operation for
additional information.
NOE
Most of
the
following
procedures
apply
to stations
containing
the Simulcast Option (C777), however,
specific Simulcast procedures
are
included in
Appendix
H
-
Simulcast. Refer to
the
trunked station
dual path and digital path simulcast manual
(68P81081E60) for system setup information
using this
option.
MSF
5000 Alignment Requirements
o
4-2
Check all deviation levels by measuring
the
highest positive or negative
peak deviation.
Terminate
all
600
Q/900Q wireline inputs
and outputs
with
a 600
Q/900Q
terminating load before taking measurements.
For trunking
stations,
if
the
MSF
5000
is connected to an operational Trunked
Radio Central Controller,
disable the station from the system only through
the central controller.
To activate/deactivate Muxbus bits, either use the
DMP
and
RSS
or the
equivalent jumper settings provided throughout
the procedure.
Most
adjustments
in
the
alignment procedure
are
made from the
tuning
channel (channel
0/mode
0).
a
Channel
0
is the
tuning
channel.
This is
the average
of
the highest and
lowest programmed
frequencies.
The channel is displayed in
the
Chan digit
(i.e., last
digit
on the left-hand side) of the Status display.
Mode
0
disables
PL/DPL
and opens squelch. The mode is displayed
in
the
Mode digit
(center)
of
the
Status display.
If available,
use
RSS
to determine the programmed receive and transmit
frequencies for each channel.
While tuning
filters for
aa
maximum or minimum reading, adjust
the
tuning
screw an additional
1\2
turn
to ensure a true
maximum or minimum level.
0
When using
a
frequency measuring device, ensure the accuracy rating is
equal to
at least
10
times that of the station stability.
The typical maximum
phone line
input level is
from
0
dBm
to -10 dBm.
The
MSF
5000
EEPOTs provide
the
functions listed in Table
42,
Refer to
Chapter
2
-
Operation for additional information on adjusting EEPOTs.
68P81092E04
3/19/94
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