HP 8753D Option 011 User Manual

Table
12-3. High
Band Subsw
eep Frequencies
F
ractional-N (MHz)
Harmonic RF
Output (MHz)
30
to 60
1/2 16
to 31
30
to
60
1 31
to
61
30
to
60
2 61
to
121
40 to
59
3 121 to
178
35.4
to
59.2
5 178
to
296
32.8
to
59.4
9 296
to
536
35.7
to 59.5
15 536
to 893
33.0
to
59.5
27 893
to
1607
31.5
to
58.8
51 1607
to
3000
Option
006
37.0 to
59.6
83 3000 to
4950
49.0
to
59.4
101 4950
to
6000
Source
Operation
in
other
Modes/Features
Besides
the
normal
net
w
ork
analyzer mo
de,
the
HP
8753D
Option
011
has
extra
mo
des
and
features
to
mak
e
additional
t
yp
es
of
measuremen
ts.
The
follo
wing
describes
the
k
ey
dierences
in
ho
w
the
analyzer
op
erates
to
ac
hiev
e
these
new
measuremen
ts.
Frequency
Offset
The
analyzer can
measure frequency-translating
devices with
the
frequency
oset
feature.
The
receiver
operates
normally
.
Ho
w
ev
er,
the
source
is
pretuned
to
a
dieren
t
frequency
b
y
an
oset
en
tered
b
y
the user.
The device
under test
will translate
this
frequency
bac
k
to
the
frequency
the
receiv
er
exp
ects.
Otherwise,
phase
lo
c
king
and
source
operation
o ccur
as usual.
Harmonic Analysis (Option 002)
The analyzer can measure the 2nd
or 3rd harmonic of the fundamen
tal source frequency
,ona
swept or CW basis, with the harmonic analysis feature (optional).
To mak
e this measuremen
t, the reference frequency (normally 1 MHz) from the A12 reference
assembly to the A11 phase lo c
k assem
bly is divided b
y 1, 2, or 3. See Figure 12-6
.
The fractional-N assem
blies are
also tuned so that the correct harmonic (com
b to oth) of the
1st LO is 0.500 or 0.333 MHz b elow the source frequency instead of the usual 1.000 MHz. The
analyzer pretunes the A3 source normally, then phase lo cks the 1st IF to the new reference
frequency to sweep the fundamental source frequency in the usual way. The key dierence
is that the 1st IF (output from the R sampler) due to the fundamental and used for phase
lo cking is now 0.500 or 0.333 MHz instead of 1.000 MHz.
DRAFT
3/21/106 15:14
Theory of Operation 12-15
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HP 8753D Option 011 Specifications

General

Brand	HP
Model	8753D Option 011
Category	Measuring Instruments
Language	English