W
WWWWWWWWWWWWWWWWWWWWWWWWWWWWW
IF
GAIN
Displays
the
control
menu
that
allows
you
to
control
the
4th
IF
Gain
Amplier
of
A6.
Y
ou
can
select
one
of
three
gains
(0
dB
,
10
dB
,
20
dB).
W
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
INPUT
SELECT
Displays
the
control
menu
that
allows
you
to
select
one
of
two
signal
paths
(FM
deviation
signal
path
from
A3/A13
(
NNNNNNNNNNNNNNNNNNNNNNN
FM
(A3)
)
and
Carrier/Noise
signal
path
from
A5
(
NNNNNNNNNNN
C/N
)
for
A6
input
(
NNNNNNNNNNNNNNNNNNNNNNNNNN
A6
INPUT
),
and
it
also
allows
you
to
select
one
of
three
paths
(SA
path
(
NNNNNNNN
SA
),
Monitor
path
(
NNNNNNNNNNNNNNNNNNNNNNN
MONITOR
),
and
DC
BUS
path
(
NNNNNNNNNNNNNNNNNNNN
DC
BUS
)
for
the
A-D
Converter
input
(
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
A/D
INPUT
).
W
WWWWWWWWWWWWW
PLL
Displays
the
control
menu
that
allows
you
to
control
the
PLL
circuit
on
the
A6.
Each
softkey
of
the
control
menus
is
described
below
.
However
,
NNNNNNNNNNNNNNNNN
SWEEP
,
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
STEP
TRIG
,
NNNNNNNNNNNNNNNNN
RESET
,
and
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
INITIALIZE
are
for
factory
use
only
.
These
menus
are
not
described.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
SPOT
FREQ
determines
the
3rd
Local
frequency
generated
by
FRA
C
N
OSC
(3rd
LO
=
SPORT
FREQ
+
21.42
MHz).
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
AUTO
CTRL
ON
off
toggles
the
internal
frequency
sweep
on
and
o,
even
if
the
DC
BUS
node
is
tested.
NNNNNNNNNNNNNNNNN
TIMER
Sets
the
timer
value
for
the
A-D
Converter
.
W
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
FV
CALOUT
on
OFF
T
oggles
the
FV
CAL
signal
output
on
and
o.
W
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
FM
OUT
on
OFF
T
oggles
the
FM
signal
output
(40
kHz)
on
and
o.
W
WWWWWWWWWWWWWWWWWWWWWWWWW
STATUS
Displays
the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
OP
STATUS
and
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
UNLK
STATUS
keys
.
When
you
press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
OP
STATUS
,
the
phase
lock
status
of
the
FRA
C
N
OSC
or
the
input
overload
status
is
displayed.
The
displayed
address
is
normally
\FFFF".
If
a
dierent
value
is
displayed,
troubleshoot
the
receiver
group
by
referring
to
the
R
eceiver
Group
Troubleshooting
Chapter
.
When
you
press
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
UNLK
STATUS
,
the
phase
lock
status
of
the
REF
OSC
and
4th
LO
OSC
on
the
A6
is
displayed.
The
displayed
address
is
normally
\FFFF".
If
the
dierent
value
is
displayed,
troubleshoot
the
receiver
group
by
referring
to
the
R
eceiver
Group
Troubleshooting
Chapter
.
9-28
Service
K
ey
Menus
Summary of Contents for 4352B
Page 11: ......
Page 31: ......
Page 73: ......
Page 80: ...Figure 3 4 List Box Menu Adjustments and Correction Constants 3 7 ...
Page 82: ...Figure 3 6 Reference Frequency Adjustment Location Adjustments and Correction Constants 3 9 ...
Page 85: ...Figure 3 9 Third IF AMP GAIN Adjustment Location 3 12 Adjustments and Correction Constants ...
Page 103: ...Figure 4 1 Troubleshooting Organization 4 2 Overall T roubleshooting ...
Page 113: ......
Page 130: ...Figure 5 11 Power Supply Block Diagram 1 Power Supply T roubleshooting 5 17 ...
Page 131: ...Figure 5 12 Power Supply Block Diagram 2 5 18 Power Supply T roubleshooting ...
Page 132: ...Figure 5 13 Power Supply Block Diagram 3 Power Supply T roubleshooting 5 19 ...
Page 133: ......
Page 135: ...Figure 6 1 Digital Control Group Simpli ed Block Diagram 6 2 Digital Control T roubleshooting ...
Page 146: ...Figure 7 2 Source Group Troubleshooting Flow Source Group T roubleshooting 7 3 ...
Page 154: ...Figure 8 2 Receiver Group Troubleshooting Flow Receiver Group T roubleshooting 8 3 ...
Page 198: ...Figure 10 1 Power Supply Functional Group Simpli ed Block Diagram Theory of Operation 10 3 ...
Page 203: ...Figure 10 3 Digital Control Group Simpli ed Block Diagram 10 8 Theory of Operation ...
Page 269: ......
Page 272: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Page 273: ......