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Measuring Instruments
435B
HP 435B Service Manual
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M
o
d
e
l
435
Β
Se
rvi
ce
8-1
.
I
N
T
R
OD
U
CTIO
N
F
o
r
co
n
t
inu
e
d
pr
otect
i
o
n
aga
in
st
f
ir
e
Se
rvi
ce
inf
o
rm
at
i
o
n
i
s
pro
vid
e
d
in
t
hi
s
sect
i
o
n
.
h
aza
rd
,
r
ep
l
ace
t
h
e
lin
e
f
u
se
o
nly
w
i
t
h
α
Ge
n
e
r
a
l
se
rvi
ce
inf
o
rm
at
i
o
n
r
e
l
ates
to
t
r
o
ubl
es
h
oot-
250V
fu
se
of
t
h
e
sa
m
e
c
urr
e
n
t
r
at
in
g
a
nd
in
g
.
R
e
p
a
ir
inf
o
rm
at
i
o
n
r
e
l
ates
to
pe
rf
o
rm
a
n
ce
t
y
pe
(fo
r
ex
a
m
p
l
e,
s
l
ow
blow,
t
im
e
d
e
l
a
y
,
test
in
g
a
nd
a
d
j
u
st
m
e
n
ts
a
f
te
r
r
e
p
a
ir
s
a
r
e
ma
d
e
.
etc
.)
.
D
o
n
ot
use
r
epa
ir
e
d
f
u
ses
o
r
s
h
o
r
t
Eac
h
se
rvi
ce
s
h
eet
in
c
lud
es
prin
c
ipl
es
of
o
p
e
rat
i
o
n
,
c
ir
c
ui
te
d
f
u
se
h
o
ld
e
r
s
.
a
nd
t
r
oubl
es
h
oot
in
g
inf
o
rm
at
i
o
n,
α
co
mp
o
n
e
n
t
W
h
e
n
e
v
e
r
i
t
i
s
lik
e
ly
t
h
at
t
hi
s
pr
otect
i
o
n
l
ocat
i
o
n
di
ag
r
a
m
a
nd
α
sc
h
e
m
at
i
c
di
ag
r
a
m
.
h
as
bee
n
im
pa
ir
e
d,
t
h
e
in
st
rum
e
n
t
mu
st
be
m
a
d
e
in
ope
r
at
iv
e
a
nd
be
sec
ur
e
d
Th
e
l
ast
f
o
ld
o
u
t
in
t
h
e
ma
nu
a
l
s
h
ows
t
h
e
l
ocat
i
o
n
aga
in
st
a
ny
unin
te
nd
e
d
ope
r
at
i
o
n
.
o
f
eac
h
asse
mbly
,
c
h
ass
i
s
mo
un
te
d
co
mp
o
n
e
n
t
d
a
d
j
u
sta
bl
e
co
mp
o
n
e
n
t
.
T
h
e
se
r
v
i
ce
in
fo
rm
at
i
o
n
i
s
ofte
n
u
se
d
a
n
w
i
t
h
powe
r
s
u
pp
li
e
d
a
nd
p
r
otect
iv
e
co
v
e
r
s
r
e
m
o
v
e
d
f
r
o
m
t
h
e
in
st
rum
e
n
t
.
8-2
.
SA
FE
TY
CO
N
SID
ER
ATIO
N
S
En
e
r
g
y
ava
il
ab
l
e
at
m
a
ny
po
in
tsmay,
i
f
co
n
tacte
d
,
r
es
ul
t
in
p
e
r
so
n
a
l
in
j
ury
.
Al
t
h
o
u
g
h
t
hi
s
in
st
rum
e
n
t
has
bee
n
d
es
i
g
n
e
d
in
acco
rd
a
n
ce
wi
t
h
in
te
rn
at
i
o
n
a
l
sa
f
et
y
sta
nd
a
rd
s,
t
hi
s
ma
nu
a
l
co
n
tain
s
inf
o
rm
at
i
o
n,
ca
u
t
i
o
n
s
a
nd
8-3
.
S
ERV
IC
E
S
HEE
TS
w
a
rnin
gs
whi
c
h
mu
st
be
f
o
ll
o
w
e
d
to
a
v
o
id
p
e
r-
E
ac
h
se
rvi
ce
s
h
eet
no
rm
a
lly
in
c
lud
es
prin
c
ipl
es
o
f
so
n
al
in
j
ury
a
nd
d
a
m
age
to
t
h
e
in
st
rum
e
n
t
(see
o
p
e
r
at
i
o
n
a
nd
t
r
o
ubl
es
h
oot
in
g
inf
o
rm
at
i
o
n,
α
co
m
-
Sect
i
o
n
s
II,
III,
a
nd
V)
.
Se
rvi
ce
a
nd
a
d
j
u
st
m
e
n
ts
po
n
e
n
t
l
ocat
i
o
n
di
ag
r
a
m
a
nd
α
sc
h
e
m
at
i
c,
all
of
s
h
o
uld
b
e
pe
rf
o
rm
e
d
o
nly
by
qu
a
li
fie
d
se
rvi
ce
whi
c
h
a
pply
to
α
s
p
ec
i
fic
po
r
t
i
o
n
o
f
c
ir
c
ui
t
ry
p
erso
nn
e
l
.
w
i
t
hin
t
h
e
in
st
rum
e
n
t
.
W
A
RN
I
N
GS
A
ny
in
te
rruptio
n
of
t
h
e
pr
otect
iv
e
(g
r
o
undin
g)
co
ndu
cto
r
(in
s
id
e
o
r
o
u
ts
id
e
t
h
e
in
st
rum
e
n
t)
o
r
di
sco
nn
ect
i
o
n
of
t
h
e
p
r
otect
i
ve
ea
r
t
h
te
rmin
a
l
i
s
lik
e
ly
to
m
a
k
e
t
h
e
in
st
rum
e
n
t
d
a
n
ge
r
o
u
s
.
In
te
n-
t
i
o
n
a
l
in
te
rru
pt
i
o
n
i
s
p
r
o
hi
b
i
te
d
.
S
E
CTIO
N
V
III
S
ERV
IC
E
Se
rvi
ce
Sh
eet
1
in
clud
es
an
o
v
e
rvi
e
w
o
f
t
h
e
in
st
ru-
m
e
n
t
o
p
e
r
at
i
o
n
,
t
ro
ubl
es
h
oot
in
g
on
an
asse
mbly
o
r
stage
l
e
v
e
l
a
nd
α
t
r
o
ubl
es
h
oot
in
g
bl
oc
k
di
a-
g
r
a
m
.
Th
e
bl
oc
k
di
ag
r
a
m
a
l
so
serves
as
an
"
ind
ex"
f
o
r
t
h
e
ot
h
e
r
se
rvi
ce
s
h
eets
.
Th
e
Sc
h
e
m
at
i
c
Diag
r
a
m
N
otes,
Fi
g
ur
e
8-5,
a
id
in
in
te
rpr
et
in
g
t
h
e
sc
h
e
m
at
i
cs
.
M
a
in
te
n
a
n
ce
d
esc
ri
be
d
h
e
r
e
in
i
s
pe
r
-
8-4
.
P
rinciples
of
Operation
fo
rm
e
d
w
i
t
h
powe
r
s
u
pp
li
e
d
to
t
h
e
in
st
ru-
Th
e
o
p
e
r
at
i
o
n
o
f
t
h
e
c
ir
c
ui
t
ry
s
h
o
wn
by
t
h
e
sc
h
e-
m
e
n
t
a
nd
w
i
t
h
t
h
e
pr
otect
iv
e
co
v
e
r
s
mat
i
c
di
ag
r
a
m
i
s
e
xpl
a
in
e
d
in
t
h
e
Prin
c
ipl
es
o
f
r
e
m
o
v
e
d
.
S
u
c
h
m
a
in
te
n
a
n
ce
s
h
o
uld
be
O
p
e
r
at
i
o
n
.
Thi
s
inf
o
rm
at
i
o
n
i
s
o
u
t
lin
e
d
by
u
s
in
g
pe
r
fo
rm
e
d
o
nly
b
y
se
rvi
ce-t
r
a
ine
d
pe
r
-
asse
mbly
a
nd
stage
na
m
es
.
Th
ese
na
m
es
a
l
so
so
nn
e
l
w
h
o
a
r
e
awa
r
e
of
t
h
e
h
aza
rd
s
se
p
ar
ate
c
ir
c
ui
t
ar
eas
on
t
h
e
sc
h
e
m
at
i
c
di
ag
r
a
m
s
.
involved
(fo
r
exa
m
p
l
e,
f
ir
e
and
e
l
ect
ri
ca
l
s
h
oc
k
)
.
W
h
e
r
e
m
a
in
te
n
a
n
ce
ca
n
be
pe
r
-
fo
rm
e
d
w
i
t
h
o
u
t
powe
r
s
up
p
li
e
d,
t
h
e
8-5
.
Troubleshooting
powe
r
s
h
o
uld
be
r
e
m
ove
d
.
Thi
s
inf
o
rm
at
i
o
n
i
s
in
t
h
e
f
o
rm
o
f
hin
ts
a
nd
s
u
g-
gest
i
o
n
s
pe
r
ta
inin
g
to
pr
o
bl
e
m
s
o
n
e
ma
y
e
n
co
un
Capac
i
to
r
s
in
s
id
e
t
h
e
in
st
rum
e
n
t
m
a
y
te
r
w
hil
e
t
r
oubl
es
h
ootin
g
t
h
e
P
o
w
e
r
M
ete
r
.
Th
e
st
ill
be
c
h
a
r
ge
d
e
v
e
n
i
f
t
h
e
in
st
rum
e
n
t
t
r
oubl
es
h
oot
in
g
inf
o
rm
at
i
o
n
i
s
l
ocate
d
on
t
h
e
l
eft-
h
as
bee
n
di
sco
nn
ecte
d
f
r
o
m
i
ts
so
urce
of
ha
nd
f
o
ld
o
u
t
o
f
t
h
e
se
rvi
ce
s
h
eet
f
o
ll
o
win
g
t
h
e
s
up
p
ly
.
P
r
inc
ipl
es
o
f
O
p
e
r
at
i
o
n
.
64
66
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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