HP 8753D Option 011 - Page 328

Figure TSBLK12
here.
Figure
12-9.
Simplified
Block
Diagrams
of
the
T
est
Sets
Receiv
er
Theory
The
receiv
er
functional group
consists
of
the
follo
wing
assem
blies:
A4
sampler/mixer
A5
sampler/mixer
A6 sampler/mixer
A10
digital
IF
These
assem
blies
com
bine
with the
A9 CPU
(describ ed
in
Digital
Con
trol
Theory)
to
measure
and
pro
cess
input
signals
in
to
digital
information
for
displa
y
on the
analyzer. Figure
12-10 is
a simplied
blo
c
k
diagram
of
the
receiv
er
functional
group.
The
A12
reference
assem
bly
is
also
included
in the
illustration to
show
how
the 2nd
LO signal
is
deriv
ed.
DRAFT
3/21/106 15:14
Theory of Operation 12-19
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