HP 8753D Option 011 - Analog Bus and Node Functions

Analog
Bus
To
access the
analog
bus,
press
4
SYSTEM
5
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SERVICE MENU
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ANALOG BUS
ON .
Description
of the
Analog Bus
The
analog
bus
is
a single
multiplexed
line that
netw
orks
31
no
des
within
the
instrumen
t.
It
can
b
e
con
trolled
from
the
fron
t
panel,
or
through
HP-IB,
to
mak
ev
oltage and
frequency
measuremen
ts
just
lik
e
a
v
oltmeter, oscilloscop
e, or
frequency coun
ter. The
next
few
paragraphs pro
vide general
information ab
out
the
structure
and
op
eration
of
the
analog
bus.
See
\Analog
Bus
No
des,"
b
elo
w,
for
a
description
of
eac
h individual
node.
Refer to
the
\Ov
erall
Blo
c
k
Diagram," in
the \Start
Troublesho
oting" c
hapter,
to
see
where
the
no
des
are
lo cated
in the
instrumen
t.
The
analog bus
consists
of
a
source
section
and
a
receiv
er
section.
The
source
can
b
e
the
follo
wing:
an
y
one
of
the
31
nodes
described
in
\Analog
Bus
No
des"
the
A14
fractional-N V
CO
the
A14
fractional-N
V
CO
divided
do
wn
to
100
kHz
The
receiv
er
p
ortion
can
b
e
the
follo
wing:
the
main
ADC
the
frequency
coun
ter
When
analog
bus
traces
are displa
y
ed,
frequency
is
the
x-axis.
F
or
a
linear
x-axis
in
time,
switc
h
to
CW
time
mo
de
(or
sw
eep
a
single band).
The
Main
ADC
The main
ADC is
lo
cated
on
the
A10
digital
IF
assem
bly
and
mak
es
v
oltage
measuremen
ts
in
tw
o
ranges.
See
\
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RESOLUTION ,"
under
\Analog
In
Men
u."
10-16 Service Key Menus and Error Messages DRAFT
3/21/106 15:14
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