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HP 8753D Option 011

HP 8753D Option 011
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Contents
7.
Source T
roubleshooting
Assem
bly
Replacemen
t
Sequence
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7-2
Before
Y
ou
Start
T
roublesho
oting .
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7-2
P
ow
er .
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7-3
1.
Source
Default
Correction
Constan
ts
(T
est
44)
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7-3
2.
RF
Output
P
o
w
er Correction
Constants
(Test
47)
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7-3
3.
Sampler Magnitude
and
Phase
Correction
Constan
ts
(T
est
53)
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7-3
Phase
Lo
c
k
Error
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7-4
Phase
Lo
c
k
Lo
op
Error
Message
Chec
k
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7-4
A4
Sampler/Mixer
Chec
k .
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7-6
A3
Source
and
A11
Phase
Lo
c
k
Chec
k
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7-7
YO
Coil Driv
e Chec
k
with
Analog
Bus
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7-10
YO Coil
Driv
e
Chec
k
with
Oscilloscop
e
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. 7-11
A12
Reference
Chec
k
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7-11
Analog
Bus
Metho
d
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7-12
Oscilloscop
e
Metho
d
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7-13
100
kHz
Pulses
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7-14
PLREF
W
a
v
eforms
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7-15
REF
Signal
A
t
A11TP1
Pin
9
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7-15
High
Band REF
Signal .
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7-15
Lo
w
Band
REF
Signal
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7-16
FN
LO
at
A12
Chec
k
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7-17
4
MHz Reference
Signal
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7-18
2ND
LO
W
a
veforms
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. 7-19
90
Degree
Phase
Oset
of
2nd
LO
Signals
in
High
Band
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7-19
In-Phase
2nd
LO
Signals
in
Lo
w
Band
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. 7-20
A12 Digital
Control
Signals Chec
k .
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7-21
L
ENREF
Line
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7-21
L
HB
and
L
LB
Lines
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7-22
A13/A14 F
ractional-N Chec
k.
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Fractional-N
Check with Analog Bus
. . . . . . . . . . . . . . . . 7-22
A14 V
CO Range Chec
k with Oscilloscop e
. . . . . . . .
. . . . . . 7-23
A14 V
CO Exercise
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A14 Divide-b
y-N Circuit Chec
k.
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. . . . 7-26
A14-to-A13 Digital Con
trol Signals Chec
k. .
. . .
. . . . . . . . . . 7-26
H
MB Line .
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. . . . 7-27
A7 Pulse Generator Check . . . . . . . . . . . . . . . . . . . . . . 7-28
A7 Pulse Generator Check with Sp ectrum Analyzer . . . . . . . . . . 7-28
Rechecking the A13/A14 Fractional-N . . . . . . . . . . . . . . . . 7-29
A7 Pulse Generator Check with Oscilloscop e . . . . . . . . . . . . . 7-30
A11 Phase Lo ck Check . . . . . . . . . . . . . . . . . . . . . . . 7-31
Phase Lo ckCheck with PLL DIAG . . . . . . . . . . . . . . . . . 7-32
DRAFT
3/21/106 15:13
Contents-1
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