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Tektronix 454A User Manual

Tektronix 454A
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d
ual - t r ace di s
p
l ays,
s
p
eci al
co
n
si
d
er at i ons
m
u st
be
ma
d e t o
zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
§¤
: 10
.
O
per at i on
i n t
h e
§¤
-
10
p
osi t i on
i s t
h e
pr ovi
d e
t h
e cor r ect di spl ay
.
See
Dual - Tr ace
Oper at i on
i n
sa
m
e
as
descr i be
d
f or
§¤
except
t h
at
t
h
e
ext er nal
t
h
i s
sect i o
n f or d
u
al - t r ace
t r i gge
r
i ng
i n f
or mat i on,
t r i gger i ng
si gnal
i s
at t en u
at e
d
10
t i mes
.
At t enuat i on
o
f
h
i g
h
- ampl i t u
d e ext e
r
nal
t r i gger
si gnal s
i s
d
esi
r
abl e
t o
br oa d
en
t
h e
r ange
of
t
h
e
Tr i gger i ng
LEV
E
L
co
n
t r ol
.
Whe
n
L
I
N
E
.
T
h e
L
I
N
E posi t i on of
t
h e
SO
UR
C
E s
w
i t ch
con-
t
h
e
COU
PL
I
NG
swi t c h
i s
set
t o
LF
REJ,
at t en u
at i on
i s
nect s
±
sam
p
l e
o
f
t
h
e
power - l i
n
e
vol t age
t o
t
h e Tr i gger
Gen-
about
20
: 1
.
er at or
.
L
i ne
t r i gger i
n
g
i s
usef ul
when
t
h e
¯ · ÁÅ
t
si gnal
i s
t i me- r el at e
d
( mul t i pl e
or
s
u b
- m
u
l t i pl e)
t o
t
h
e
l i
ne
f r e-
q u
ency
.
I t
i s
al so
usef
u
l
f or
pr ovi di
n g ±
st abl e
di s
p
l ay
of ±
l i ne- f r e
q
uency
com
p
onent
i n
±
compl ex
wavef or
m
.
Tr i gger
Co
up
l i ng
F
our
met
h o d
s
of
cou
p
l i ng
t
he
t r i gger
si gnal
t o
t h
e
t r i gger
EXT
.
An
ext er nal
si gnal
conn
ect ed t o
t
h e
§¤
T R
I G
ci r cui t s
can
be
sel ect e
d wi t h
t
h e Tr i gger i ng
CO
UPL
I
NG
I N
PU
T
co
n
nect or
can be used t o
t r i gger
t he
sweep
i n
t
h e
swi t c
h es
.
E
ach
posi t i o
n p
er mi t s
sel ect i on
or
r ej ect i on
of
t he
§¤
p
osi t i on
of t he
SO
UR
C
E swi t c h
.
T
h
e ext er nal
si gnal
f
r e
q
uency
component s
of
t
h
e
t r i gger
si gnal
wh
i c
h
wi l l
m
u st
be
t i me- r el at e
d t o
t
h e
d
i s
p l ayed
si gnal
f or
±
st abl e
t r i gger
t
h
e
swee
p
.
Fi g
.
2- 10
gr aphi cal l y
i l l ust r at es
t
h e
ban
d
d
i spl ay
.
An
ext er nal
t r i gger
si gnal
can
b
e
used
t o
pr ovi de
±
of
f r
e
q
uenci es
w
h
i c
h
eac
h p
osi t i on
of
t
h e
cou
p
l i
n g swi t c h
t r i gge
r
ed
d
i spl ay
w
h en
t
h e
i nt er nal
si gnal
i s
t oo l ow
i n
cover s
.
ampl i t u d e f or cor r ect
t r i gger i ng,
or
cont ai ns
s
i
g
n
al
component s
on
w
h
i c
h
i t i s
not
d
esi r ed
t o
t r i gge
r
.
I t
i s
al so
usef ul
w
h en
si g
n
al
t r aci
n
g
i n
ampl i f i er s,
ph
ase- s
h
i f t
AC,
T
he
AC
posi t i on
bl oc
k
s t
h e
D
C
compone
n
t
of
t
h e
net wor
k
s,
wave- shapi ng
ci r c
u
i t s,
et c
.
T
h e
si gnal
f r om
±
t r i gge
r
si gnal
.
Si gnal s
wi t
h
l ow- f r equency
co
m
ponent s
si ng
l
e
poi nt
i n t h e
ci r c
u
i t
un d er
t est
ca
n
be connect e
d t o
bel ow about
30
h
er t
z
ar e
at t en u
at e
d
.
I n
ge n e
r al ,
AC
t
h
e
§¤
TRI G
I
NPU
T
connect o
r t
h r ou gh
±
si gnal
pr obe
or
coupl i ng
can
be use
d
f or
most
appl i cat i ons
.
H
owever ,
i f
t
h e
cabl e
.
T
h
e
swee
p
i s
t h
en
t r i gger e
d b
y
t h
e
same
si gnal
at
al l
t r i gger
si gnal
cont ai ns
unwant e
d
f r e
q ue n
cy
compone
n
t s
or
t i mes
an d
al l ows
am
p
l i t u
d
e,
t i me
r el at i ons
h
i p
or
waves
h
a
p
e
i f
t
h e
swee
p
i s
t o be t
r
i gger e
d
at
±
l ow
r e
p
et i t i o
n
r at e
or
±
c h anges of
si gnal s
at
var i ous
poi nt s
i n
t
h e
ci r
cui t
t o
be
DC
l evel ,
one
of
t
h e
r emai ni
n
g
CO
UPL
I
NG
swi t c
h
posi t i ons
exa
m
i ne
d wi t h
out
r eset t i ng
t
h
e
t r i gger
cont
r
ol s
.
wi l l
pr ovi
d e ± bet t er
di s
p
l ay
.
Oper at i
n
g
I nst r
u
ct i ons- 454
/
R
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.
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ency
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osi t i on
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e
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2- 21

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Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

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