Modulation Compensation Adjustment - Motorola MSF 5000 Instruction Manual

MSF
5000
Instruction Manual
Chapter4 Alignment
Alignment Procedures
Station deviation settings
are
listed in Table
4-8.
Table
4-8
Deviation
Settings
Frequency Range
Deviation VHF,UHF, and 866-869 MHz 900 MHz
Analog
Adjustment
800 MHz
(kHz) (kHz)
Plus
(kHz)
100%
Full
Station
2.5
Deviation
Maximum Station
4.6 3.7 2.3
Deviation
60%
Full
Station
24 15
Deviation
40%
Full
Station
1.6 1.0
Deviation
Simulcast Data
0.85 0.7
0.5
Deviation
Trunked Data Deviation
0.85 0.7
0.5
Failsoft Data Deviation
0.8 0.7
3.9
Coded Deviation
(+/-) 2.3
N/A
200
Hz,
using
a
1
kHz
Square
wave
Note:
All
deviation measurements and settings must
be
within +/-
100
Hz
except where noted
5
4
3
2
1
4.
Using
a
digital
voltmeter, adjust R191 for
0.60
Vdc
between
NORM
ENV
(TP13 or HY804-13 on the
SSCB)
and
AGC REF
(TP12
or
HY804-10
on the
SSCB).
Refer
to
Figure
4-15 for the
location of R191 on
the
Uniboard and Figure
4-16
for the location of
NORM
ENV
and
AGC REF
on the
SSCB.
5.
Remove
the injected signal from the receiver connector on the
Junction
Box.
6.
Set the
Acc Dis/Reset switch
to the center
(normal) position.
Modulation Compensation Adjustment
68P81092E04
3/19/94
The following
procedure adjusts the modulation compensation circuit on the
Uniboard. This adjustment is performed by using
the tuning channel frequency
(channel 0/mode
0).
This allows
the station to be
tuned for all programmed
frequencies.
While in
the
tuning channel,
a 10
Hz
waveform should appear whenever the
station is keyed via
a
local push-to-talk
(LOC PTT).
This gives
the technician
a
4-25
MSF
5000
Instruction Manual
Chapter4 Alignment
Alignment Procedures
Station deviation settings
are
listed in Table
4-8.
Table
4-8
Deviation
Settings
Frequency Range
Deviation VHF,UHF, and 866-869 MHz 900 MHz
Analog
Adjustment
800 MHz
(kHz) (kHz)
Plus
(kHz)
100%
Full
Station
2.5
Deviation
Maximum Station
4.6 3.7 2.3
Deviation
60%
Full
Station
24 15
Deviation
40%
Full
Station
1.6 1.0
Deviation
Simulcast Data
0.85 0.7
0.5
Deviation
Trunked Data Deviation
0.85 0.7
0.5
Failsoft Data Deviation
0.8 0.7
3.9
Coded Deviation
(+/-) 2.3
N/A
200
Hz,
using
a
1
kHz
Square
wave
Note:
All
deviation measurements and settings must
be
within +/-
100
Hz
except where noted
5
4
3
2
1
4.
Using
a
digital
voltmeter, adjust R191 for
0.60
Vdc
between
NORM
ENV
(TP13 or HY804-13 on the
SSCB)
and
AGC REF
(TP12
or
HY804-10
on the
SSCB).
Refer
to
Figure
4-15 for the
location of R191 on
the
Uniboard and Figure
4-16
for the location of
NORM
ENV
and
AGC REF
on the
SSCB.
5.
Remove
the injected signal from the receiver connector on the
Junction
Box.
6.
Set the
Acc Dis/Reset switch
to the center
(normal) position.
Modulation Compensation Adjustment
68P81092E04
3/19/94
The following
procedure adjusts the modulation compensation circuit on the
Uniboard. This adjustment is performed by using
the tuning channel frequency
(channel 0/mode
0).
This allows
the station to be
tuned for all programmed
frequencies.
While in
the
tuning channel,
a 10
Hz
waveform should appear whenever the
station is keyed via
a
local push-to-talk
(LOC PTT).
This gives
the technician
a
4-25