Motorola MSF 5000 Instruction Manual page 197

MSF
5000
Instruction Manual
Chapter
4
Alignment
Alignment Procedures
NOTE
If the adjustments cannot
be made
within +/-
100
Hz,
refer to
Chapter 5
-
Troubleshooting.
Transmitter Maximum Deviation Adjustment
The following procedure adjusts
the
maximum deviation for
the transmitter.
This
adjustment is required to keep the
station
within
local regulatory agency
standards
by
preventing interference
with
adjacent channels.
To accurately perform this procedure, make sure all transmitted data is present
(e.g.,
PL, DPL,
Connect Tone,
TDATA,
etc.).
Do
not use the
Xmit
switch
because
it
strips
the
PL
and other transmitted data from the transmitted signal.
NOTE
Each channel must have
the
Maximum Deviation
measured and set
individually,
since this
level
is
channel slaved. It is not necessary to check the
tuning
channel deviation levels.
1.
Inject
a
1
kHz
tone, at
1
Vrms closed circuit level, into the
MIC AUDIO
connector on the front panel or into
TP8
on the
SSCB. This is
a 600
Q input.
Refer
to
Figure
4-19 for the location of TP8.
2.
Set the
Acc Dis/Xmit switch in Acc Dis
to
prevent
the station from
keying
during
this procedure.
3.
Set the station to channel
1
if
the station has
multiple
channels.
4.
Key
the station
by
setting the
LOC PTT
MUxXbus
bit
(A1/D1).
NOTE
If this is
a
trunked station or
if
the station is
equipped
with
PL
or
DPL
coded squelch, the transmit signal
consists of
Mic Audio
summed in
with
TDATA
or the
coded squelch signal.
DO NOT
use the
PL Dis/Xmit
switch
to
key
the station;
doing
so strips the
TDATA
and coded squelch signals from the transmitted
signal
and
gives
a
false deviation reading.
5.
Measure
the
Maximum Station Deviation level and
compare
it
to the
requirements in Table 4-8.
68P81092E04
3/19/94
4-31
MSF
5000
Instruction Manual
Chapter
4
Alignment
Alignment Procedures
NOTE
If the adjustments cannot
be made
within +/-
100
Hz,
refer to
Chapter 5
-
Troubleshooting.
Transmitter Maximum Deviation Adjustment
The following procedure adjusts
the
maximum deviation for
the transmitter.
This
adjustment is required to keep the
station
within
local regulatory agency
standards
by
preventing interference
with
adjacent channels.
To accurately perform this procedure, make sure all transmitted data is present
(e.g.,
PL, DPL,
Connect Tone,
TDATA,
etc.).
Do
not use the
Xmit
switch
because
it
strips
the
PL
and other transmitted data from the transmitted signal.
NOTE
Each channel must have
the
Maximum Deviation
measured and set
individually,
since this
level
is
channel slaved. It is not necessary to check the
tuning
channel deviation levels.
1.
Inject
a
1
kHz
tone, at
1
Vrms closed circuit level, into the
MIC AUDIO
connector on the front panel or into
TP8
on the
SSCB. This is
a 600
Q input.
Refer
to
Figure
4-19 for the location of TP8.
2.
Set the
Acc Dis/Xmit switch in Acc Dis
to
prevent
the station from
keying
during
this procedure.
3.
Set the station to channel
1
if
the station has
multiple
channels.
4.
Key
the station
by
setting the
LOC PTT
MUxXbus
bit
(A1/D1).
NOTE
If this is
a
trunked station or
if
the station is
equipped
with
PL
or
DPL
coded squelch, the transmit signal
consists of
Mic Audio
summed in
with
TDATA
or the
coded squelch signal.
DO NOT
use the
PL Dis/Xmit
switch
to
key
the station;
doing
so strips the
TDATA
and coded squelch signals from the transmitted
signal
and
gives
a
false deviation reading.
5.
Measure
the
Maximum Station Deviation level and
compare
it
to the
requirements in Table 4-8.
68P81092E04
3/19/94
4-31