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Measuring Instruments
435B
HP 435B Service Manual
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S
ERV
IC
E
S
HEE
T
2
(Cont'
d
)
s
y
ste
m
will
n
ot
b
e
d
eg
r
ade
d
.
M
eas
urin
g
a
nd
r
eco
rdin
g
d
o
vol-
tages
a
nd
com
p
a
rin
g
t
h
e
m
wi
t
h
t
h
e
n
o
rm
a
l
l
e
v
e
l
s
s
h
o
wn
on
t
h
e
sc
h
e
m
at
i
cs
m
a
y
h
e
lp
to
i
so
l
ate
d
e
f
ect
iv
e
co
mp
o
n
e
n
ts
.
R
e
f
e
r
to
Ge
n
e
r
a
l
Se
rvi
ce
Inf
o
rm
at
i
o
n
(in
Sect
i
o
n
VIII)
wi
t
h
r
ega
rd
to
o
p
e
r
atio
n
a
l
a
mplifi
e
r
c
ir
c
ui
ts
.
Th
e
w
a
v
e
f
o
rm
s
a
nd
v
o
l
tages
s
h
o
wn
on
t
h
e
sc
h
e
m
at
i
c
a
r
e
n
o
rm
a
l
w
h
e
n
o
p
e
r
at
in
g
und
e
r
t
h
e
f
o
ll
o
win
g
co
ndi
t
i
o
n
s
.
ΝΟΤΕ
To
ex
hi
b
i
t
t
h
e
co
rr
ect
wa
v
efo
rm
s
in
t
h
e
R
A
N
G
E
sw
i
tc
h
p
os
i
t
i
o
n
s
indi
cate
d,
t
h
e
p
owe
r
se
n
sor
(as
pa
r
t
of
t
h
e
m
eas
ur
e
m
e
n
t
s
y
ste
m
)
mu
st
m
eas
ure
powe
r
f
r
o
m
-35
to
+20
dBm
in
to
α
50
Ω
l
oa
d
.
α
.
P
O
WER
M
ET
ER
A
N
D
S
EN
SO
R
.
Set
the
P
owe
r
Meter's
RAN
G
E
s
wi
tc
h
to
t
h
e
1
mW
p
os
i
t
i
o
n,
C
AL
FA
C
T
O
R
sw
i
tc
h
to
100%
a
nd
t
h
e
r
ea
r
p
a
n
e
l
P
O
WER
REF
s
wi
tc
h
to
(ON)
.
Co
nn
ect
t
h
e
p
o
w
e
r
se
n
so
r
to
t
h
e
P
o
w
e
r
Meter's
P
O
WER
REF
O
UTPUT
j
ac
k
.
b
.
P
O
WER
ME
T
ER
A
N
D
HP
M
OD
EL
11683
Α
R
A
N
G
E
CA
L
I-
BR
ATO
R
.
Set
t
h
e
P
o
w
e
r
M
ete
r
's
RAN
G
E
sw
i
tc
h
to
t
h
e
1
mW
p
os
i
t
i
o
n
a
nd
C
AL
FA
C
T
O
R
s
wi
tc
h
to
100%
ο
.
Set
t
h
e
R
a
n
ge
Ca
li-
br
ato
r
's
RAN
G
E
s
wi
tc
h
to
1
mW,
P
O
LARITY
s
wi
tc
h
to
N
O
R
-
MAL
a
nd
FUN
C
TI
O
N
s
wi
tc
h
to
S
TANDBY
.
Co
nn
ect
t
h
e
R
a
n
ge
Ca
libr
ato
r
to
t
h
e
P
owe
r
M
ete
r
wi
t
h
t
h
e
p
o
w
e
r
se
n
so
r
ca
bl
e
.
Set
t
h
e
R
a
n
ge
Ca
libr
ato
r
FUN
C
TI
O
N
sw
i
tc
h
to
C
AL
I
BRATE
.
F
irst
Amplifier
To
t
r
o
ubl
es
h
oot
t
h
e
hybrid
o
p
e
r
at
i
o
n
a
l
a
mpli
fie
r
e
ff
ect
iv
e
ly,
co
n
-
s
id
e
r
t
h
e
co
mpl
ete
a
mpli
fie
r
as
s
h
o
wn
on
t
h
e
sc
h
e
m
at
i
c
on
t
h
e
o
pp
os
i
te
f
o
ld
o
u
t
an
d
t
h
e
p
owe
r
se
n
so
r
's
sc
h
e
m
at
i
c
.
Th
e
bi
as
l
e
v
e
l
s
m
a
yb
e
u
sed
m
ost
e
ff
ecti
v
e
ly
to
iso
l
ate
t
h
e
pr
o
bl
e
m
to
t
h
e
P
o
w
e
r
M
ete
r
.
If
t
h
e
d
o
v
o
l
tage
at
ΤΡ
1
i
s
co
rr
ect
bu
t
t
h
e
ac
v
o
l
tage
i
s
in
co
rr
ect,
α
d
e
f
ect
iv
e
co
mp
o
n
e
n
t
pr
o
b
a
bly
e
xi
sts
in
t
h
e
p
o
w
e
r
se
n
so
r
b
e
f
o
r
e
t
h
e
signal
i
s
inpu
t
to
t
h
e
hyb
r
id
a
mpli
fie
r
.
An
ac
v
o
l
tage
co
upl
e
d
w
i
t
h
α
p
osit
iv
e
v
o
l
tage
(=+3
Vd
c)
at
A
4
U
1
pin
2
w
o
uld
in
d
i
cate
α
d
e
f
ect
i
n
t
h
e
p
o
w
e
r
se
n
so
r
's
hybrid
a
mpli-
fi
e
r
inpu
t
o
r
t
h
e
in
te
r
co
nn
ect
ca
bl
e
.
If
t
h
e
v
o
l
tage
at
pin
2
i
s
a
b
o
u
t
0
.0
Vd
c,
t
h
e
d
e
f
ect
iv
e
co
mp
o
n
e
n
t
i
s
pr
o
b
a
bly
in
t
h
e
P
o
w
e
r
Meter's
Fir
st
Amplifi
e
r
.
Α
p
os
i
t
iv
e
v
o
l
tage
at
ΤΡ
1
indi
cates
t
h
e
m
a
lfun
ct
i
o
n
i
s
pr
oba
bly
in
t
h
e
P
o
w
e
r
Meter's
Fir
st
Ampli
fie
r
.
ΝΟΤΕ
D
o
n
ot
o
ve
rl
oo
k
t
h
eposs
i
b
ili
t
y
t
h
at
a
problem
can
ex
i
st
in
t
h
e
A
u
to
Ze
r
o
c
ir
c
ui
ts
s
h
ow
n
on
Se
rvi
ce
Sh
eet
3
.
78
80
Table of Contents
Table of Contents
4
General Information
9
Introduction
9
In Struments Covered by Manual
9
De Sc R Iptio N
9
O P B Tio N S
10
Atte Ry
11
Sa F et y Co N S ID E R at I O N
11
HP M Odel 435 Β a
11
R Ecommend Ed Test Equipment
11
I Nstall Atio N
13
Introduction
13
Preparation for Use
13
T I a L in S P Ect I O N
13
Mete R
14
Ower Cable
14
Oltage Selection
14
L Ect I O N
14
Interconnections
14
L I N E V Oltage Selection
14
Operat Ing Environment
15
B Ench O Peration
15
F R Ac K Moun Ting
15
M Ains Plu Gs Available
15
B Atte Ry Installation
16
Ow er Mete R
16
3-12 . Battery
20
Rea R Pa N E L Co N Trol S, Connectors and Ind Icato R S
22
Oper Ator's C He Cks
23
O Per Ating Instru Ct I O N S
25
Per Atio N
26
Specified Uncertainties
27
Calculating M
29
Eas Ureme Nt un Certa Inties
29
Mismatch un Certai Nties
30
Calculating M Eas Ureme Nt un Certai Nty
31
Introduction
32
In Eas
32
R St Case
32
CC Ur
32
Ac Ur
32
Perf O Rm an Ce te Sts
34
Eco Rd
34
Rf Rm Ce Tests
34
Power Reference
34
Est
35
Z Ero Carryover Test Set up
35
Erform Ance Est
37
Est
38
Ad Ju St Men Ts
40
Introduction
40
N S
40
Ad J
40
Locations
40
Specifications
40
Actory Selected Co Mponents
40
Ower Reference Oscillator Level Adjustment
42
P Ower Reference Osc Ill Ator Level
43
Multivibrator Adjust Ment
45
Ower Meter Adjustments with 50Ω P
47
P Ower Meter Ad
47
Owe R Sensor
48
O W E R M Ete R Ad J U St M E N Ts Wi T H Ca Libr Ato R
50
With Calibrator
50
Repl Ac
52
Section E ABLE P V I a RTS
52
Introduction
52
Abbreviations
52
E Pl Acea Bl E P
52
Actory Se Lecte D Parts (*)
52
Orderin G in St Ructions
52
Arts Provi Sioning
52
Epl Acea Ble Parts
52
Ma Nu al Chan G es
63
Introduction
63
Manual Change in Structions
63
Servic E
65
Introduction
65
Sa F et y Co N S ID E R at I O N
65
H Eets
65
Fr O N T
69
Ower Sensor
77
Sc Hem at IC
78
Ge Neral Se Rvi Ce Inf Orm at Ion
79
Ca Libr Ato R
79
Oa Rd S
81
Ρ/Ο Α4 Ass Embly
82
Ρ/0 Α
86
P Ower S Upply
89
Operational Amplifiers
90
Ρ/Ο Α4 Assem Bl y
92
Ρ/Ο Α4 Ass Embly
99
Ower Refere Eference Assembly
107
Sc Hematic Diagram
107
Ocatio Ns
108
Ero
110
5
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HP 435B Specifications
General
Brand
HP
Model
435B
Category
Measuring Instruments
Language
English
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