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MSF
5000
Instruction Manual
Chapter
4
Alignment
Alignment Procedures
PO
POWER
SET
POTENTIOMETER
Po
Tx
CAUTION
Power Set
STATIC DISCHARGE TO CABINET OR
OL
SWITCHES
MAY
CAUSE
STATION
Freq
Adj
M
MOTOROLA
FO
RESET
TO
DEFAULT
CONDITIO.
MSF
5000
u
OPEN
OPEN
a
we
15
°
fo
RF TRAY
FRONT PANEL
NOTE:
L1
-
L6,
J1
-
J6
and
Fo Freq Adj
are
not found on
VHF
models.
Access
to
these requires
the removal of
the
front
panel.
MSFi015
021894JNM
Figure
4-11
Po Power Adjustment
Reflected Power Level Adjustment
10.
Use
the
tuning tool
to set the
power output
to the
desired reflected power
level trip point by adjusting
the
Po Power Set potentiometer.
The
reflected
power level trip point
is
typically
set to 20%
of the rated
station power level. Refer
to
Table 4-4 through Table
4-7.
11.
Toggle
the
Select/Set switch
to
Select when
the first character of the
Status
display
shows
"r".
The
second and third
digits indicate
the
reflected power
level trip point.
This value
is represented in hexadecimal.
12.
Set the Select/Set
switch
to
Set
to
exit
the
power trip point
mode.
13.
Deactivate all activated
MUXbus
bits.
RF
Power Output Adjustment
The following procedure
is
divided
into three parts:
OO
Overdrive Control
O
Power
Set
Control
oa
Battery Cutback Control
The Overdrive Control
is
only performed
on
high power
stations (i.e., containing
two Power Amplifiers). This procedure adjusts
the
power cut-back
if
the
output
power level
exceeds
a
predetermined level
set
by
the user.
The Overdrive Control
(R453) adjustment is located on
the
Uniboard, and is
accessed from the top of the
RF
Tray
cover.
68P81092E04
3/19/94
4-17
MSF
5000
Instruction Manual
Chapter
4
Alignment
Alignment Procedures
PO
POWER
SET
POTENTIOMETER
Po
Tx
CAUTION
Power Set
STATIC DISCHARGE TO CABINET OR
OL
SWITCHES
MAY
CAUSE
STATION
Freq
Adj
M
MOTOROLA
FO
RESET
TO
DEFAULT
CONDITIO.
MSF
5000
u
OPEN
OPEN
a
we
15
°
fo
RF TRAY
FRONT PANEL
NOTE:
L1
-
L6,
J1
-
J6
and
Fo Freq Adj
are
not found on
VHF
models.
Access
to
these requires
the removal of
the
front
panel.
MSFi015
021894JNM
Figure
4-11
Po Power Adjustment
Reflected Power Level Adjustment
10.
Use
the
tuning tool
to set the
power output
to the
desired reflected power
level trip point by adjusting
the
Po Power Set potentiometer.
The
reflected
power level trip point
is
typically
set to 20%
of the rated
station power level. Refer
to
Table 4-4 through Table
4-7.
11.
Toggle
the
Select/Set switch
to
Select when
the first character of the
Status
display
shows
"r".
The
second and third
digits indicate
the
reflected power
level trip point.
This value
is represented in hexadecimal.
12.
Set the Select/Set
switch
to
Set
to
exit
the
power trip point
mode.
13.
Deactivate all activated
MUXbus
bits.
RF
Power Output Adjustment
The following procedure
is
divided
into three parts:
OO
Overdrive Control
O
Power
Set
Control
oa
Battery Cutback Control
The Overdrive Control
is
only performed
on
high power
stations (i.e., containing
two Power Amplifiers). This procedure adjusts
the
power cut-back
if
the
output
power level
exceeds
a
predetermined level
set
by
the user.
The Overdrive Control
(R453) adjustment is located on
the
Uniboard, and is
accessed from the top of the
RF
Tray
cover.
68P81092E04
3/19/94
4-17
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