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T
able
5-4.
Analog
Bus
Nodes
(continued)
Number
Name
Description
A2
CPU
Assembly
Nodes
16
+5V
on
CPU
+5V
power
supply
on
the
CPU
board.
Normal
values
are
4.5
to
5.5
volts
.
17
+12V
Flash
V
oltage
+12V
Vpp
supply
for
writing
to
the
ash
EPROM
on
the
CPU
board.
This
voltage
is
normally
OFF
,
so
the
value
should
be
less
than
2.5V
.
The
\on"
voltage
level
is
checked
during
the
power-up
tests
,
and
an
error
message
is
displayed
if
the
level
is
incorrect.
18
CPU
T
emp
T
emperature
sensor
on
CPU
board
(CPU
TEMP
on
the
schematic).
Typical
values
are
30
to
60
Celsius;
this
will
depend
partly
on
the
ambient
temperature
.
More
SV
C
Utilities
Menu
NNNNNNNNNNNNNNNNNNNNNNN
ALC
DAC
:
Allows
manual
adjustment
of
the
A
utomatic
Level
Control
(ALC)
D
A
C,
which
controls
the
source
output
(\RF
OUT"
connector)
power
level.
Disables
the
ALC
power
calibration
until
a
power
level
is
entered
using
the
P
ower
menu.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Attenuator
:
Allows
manual
control
of
the
step
attenuator
,
if
one
is
installed.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
LO
Power
Adjust
:
Allows
manual
adjustment
of
the
D
A
C
which
controls
the
LO
output
power
.
The
LO
D
A
C
is
used
by
the
HP
8711B/12B
receiver
board
only
.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Detector
Zero
DACs
:
FOR
F
A
CTORY
USE
ONL
Y
.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Ext
Det
Info
:
FOR
F
A
CTORY
USE
ONL
Y
.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Bandcross
ON
off
:
FOR
F
A
CTORY
USE
ONL
Y
View
Array
Master
Menu/View
Array
Interpol
Menu
These
keys
allow
you
to
view
the
actual
calibration
data
arrays
that
are
currently
in
use
.
The
arrays
are
copied
into
a
memory
trace
for
easy
analysis
.
This
allows
you
to
scale
them,
and
use
markers
to
read
out
actual
values
.
Note
All
calibrations
are
801
points
.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Directivity
:Displays
the
directivity
cal
array
as
a
memory
trace
.
This
is
related
to
the
raw
directivity
of
the
analyzer
but
it
does
not
equal
it.
The
raw
directivity
is
determined
by
dividing
the
tracking
array
below
by
this
directivity
array
.
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Source
Match
:
Displays
the
source
match
cal
array
as
a
memory
trace
.
This
is
the
raw
source
match
of
PORT
1.
NNNNNNNNNNNNNNNNNNNNNNNNNN
Tracking
:
Displays
the
tracking
(narrowband
frequency
response
of
coupler
with
100%
reection)
cal
array
as
a
memory
trace
.
5-12
Service
Related
Menus
Содержание 87114B
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Страница 118: ...Figure 5 1 The Service Key Menus 5 2 Service Related Menus ...
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