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Tektronix 454A User Manual

Tektronix 454A
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O
p
er at i ng
I nst r uct i ons- 454A/
R
454A
7
.
Set
t
he
H
O
RI Z
DI S
PL
AY
swi t ch t o
M
I X E
D
.
T
h
e
t
h
e
I
NPU
T CH
2 or zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
¥
connect or
.
T
he
cal i br at ed
X- axi s
f i r st
par t
of
t h e
d
i spl ay
wi l l
be
at
±
sweep
r at e
set
by
t h
e
d
ef l ect i o
n
i s
i n
d
i cat e
d b y
t
he
CH
1
VO
L
TS/ DI
V
swi t c
h
;
¤™œ
/ DI
V
swi t c
h
,
a nd
t
he
l at t er
par t
of
t
h
e d
i s
p
l ay
wi l l
be
cal i br at ed
Y- axi s
d
ef l ect i on
i s
i n
d
i cat e
d
b
y
t
h
e
CH
2
at
±
sweep
r at e
set
b
y
t h e
¤™œ
/ DI
V
swi t c h
.
V
O
L
TS/ DI
V
swi t c
h
.
F
or
§
-
¥
oper at i on,
t
h
e
CH
1
P
OSI TI O
N
cont r ol p
r ovi
d
es
X- axi s p
osi t i oni ng
and
t
h
e
CH
2
P
OSI TI O
N
con
t r ol
p
r ovi
d
es
Y- axi s
posi t i oni ng
.
Sever al
exampl es
of
uses
of
t
he
del aye
d
swee
p
f eat ur e
ar e
gi ven u
nder
B
asi c
A
pp
l i cat i ons
i n t
h
i s
sect i on
.
Do
not
excee
d
t
h e
h
or i zont al
scan ar ea
of
t
h
e
gr at i cul e
i n
t h
e
§
-
¥
mo
d
e of o
p
er at i on
.
T
h
i s
mode
can b
e
used t o
Swee
p
L
engt
h
.
T
he
S
WEEP
LEN
GT
H
cont r ol
i s
measur e
ph
ase
di f f er ences
up
t o
about
t wo
mega
h
er t z
.
most
usef ul
w
hen
use
d
wi t h
del ayed
swee
p
.
As
t
h
i s
cont r ol
A
b
ove
t
h
i s
f r e
q
uency,
t
he
i n h
er ent phase
s
h
i f t
i n t h
e
i s
r ot at e
d
count er cl oc
k
wi se
f r om
t
he
FULL
p
osi t i on,
t
h
e
syst em
ma
k
es
p hase
measur eme
n
t
d
i f f i c u
l t
.
To
ai
d
i
n
l engt
h of
t
h e
sweep
decr eases
unt i l
i t i s
a
b
out
f our
i nt er pr et i
n
g l i ssa
j
ous
di s
p
l ays,
r ef er
t o
t
he r ef er ence
boo
k
s
d
i vi si ons
l o
ng near
t
he
count er cl oc
k
wi se
p
osi t i on
( not
i n
l i st e
d
u
nder
A
pp
l i cat i o
n
s
.
EN
DS
d
et ent )
.
T
he
EN
DS
p
osi t i on
p
r oduces
±
d
i s
p
l ay
w
h
i c
h en d
s
i mme
d
i at el y
f ol l owi ng
t h
e
swee
p
(
swee
p
m
u
st
end
bef or e
t
he
n
or mal
en d
of
swee
p
) .
T
he
To
c
h
ec
k
and
a
d
j
ust
t h
e
X- axi s
def l ect i on
accur acy,
use
S
WEEP
LEN
GT
H
cont r ol
ef f ect i vel y
i ncr eases
t
he
r e
p
et i -
t
he
f ol l owi ng
p
r ocedur e
( Y- axi s
def l ect i on
accur acy
i s
t i on r at e
of d
el ayed
sweep
d
i s
p
l ays
.
c
hec ked
as
gi ven
f or
ver t i cal
d
ef l ect i on
under
V
er t i cal
Gai n
A
d
j
ust me
nt )
.
To
use
t h e
S
WEEP
LEN
GT
H
cont r ol ,
set
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c h t o
¤•
D
UR
I
N
G
an
d
set
t
he
del ay
t i me
a
nd d el ayed
sweep
r at e
i
n
t
he
nor mal
manner
.
T
u
r n
t
he
S
WEEP
LEN
GT
H
cont r ol
count er cl oc
k
wi se
unt i l
t
h
e
swee
p en
d
s
i mmedi at el y
f ol l owi ng
t
h
e
i nt ensi f i e
d
p
or t i on
of
t h
e d
i s
p
l ay
.
T
h
en,
set
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c
h
t o
( D
EL
AY
E
D
S
WEEP)
.
T
h
i s
met ho
d p
r ovi
d
es
t
h
e
maxi mum
r e
p
et i t i on
r at e
f or
±
gi ven
del aye
d
swee
p d
i s
p
l ay
.
I n
t
h
e
E
N
DS
posi t i on,
t
he
maxi mum
r epet i t i on
r at e
i s
mai nt ai ne
d
aut omat i cal l y
.
J
i t t er
can
be
i nt r oduce
d
i nt o
t
h
e
di spl ay
and
g
.
C
h
ec
k
t
h
at
t
he
dot s
ar e
exact l y
f i ve
d
i vi si ons
a p
ar t
.
I f
i ncor r ect
di spl ays
pr odu
ced
t
h
r oug
h
t
h
e
wr ong
u
sage
not ,
a
d
j
ust
t
he
§
- GAI
N
( X- Y)
ad
j
ust ment
( si
d
e
p
a
n
el )
f or
of
t
he
SWEEP
LEN
GT
H
cont r ol
.
Wh
en
usi ng
t
h
i s
exact l y
f i ve
di vi si ons
of
d
ef l ect i on
.
cont r ol ,
f i r st
obt ai n
t
h
e
best possi bl e
di spl ay
i n
t
he
FULL
posi t i on
.
T
h
en, set
t
he
cont r ol
f or
t
he
desi r e
d
sweep
l engt
h
.
I f
j
i t t er
i s
evi dent
i n
t
he
di spl ay,
Sweep
Gener at or
Out
put
Si gnal s
r eadj ust
t
he
Tr i gger i ng
cont r ol s
or c
h
ange
t
h
e
SWEEP
LEN
GT
H
cont r ol
t o
± posi t i on
t
h
at does
not
an
d
+
GAT
E
.
T
h
e
an
d
+
GAT
E
out put
cause
j i t t er
.
connect or s
( on
si de
panel )
p
r ovi
d
ed
± r ect ang u
l ar
out
p
ut
pu
l se
w
h
i c
h
i s
coi nci
d ent
wi t h
t
h
e
swee
p
t i me
of
t
h
e
r espect i ve
swee
p
gener at or
.
T
h
i s
r ect angul ar p
ul se
i s
a b
o
u
t
§
-
¥
O
p
er at
i
on
+12
vol t s
i n
am
p
l i t u
d
e
( i nt o
h
i g h
- i m
pe
d
ance
l oads)
wi t
h
I n
some
a
pp
l i cat i ons,
i t i s
desi r ea
b
l e
t o d
i s
p
l ay
one
si g
n
al
pul se
dur at i on
t
he
same
as
t
he
r espect i ve
swee
p
.
ver sus
anot
h
er
( X- Y)
r at
h
er
t
h
an
agai nst
t i me
( i nt er nal
sweep)
.
T
he
§
-
¥
posi t i on
of
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c
h
Sweep
.
T
h
e
S
WEEP
connect or
( on
si
d e p
anel )
p
r ovi
d
es
±
means
f or
appl yi n
g
an
ext er nal
si gnal t o
t
he
pr ovi
d
es
±
sampl e
of
t
h
e
sawt oot
h
sweep
si gnal
f r om
t
he
h
or i zont al
am
p
l i f i er
f or
t
h
i s
t ype
of di spl ay
.
Swee
p
Gener at or
ci r cui t
.
Am
p
l i t u
d
e
of
t
h
e
sweep
out
p ut
si gnal
i s
about
+10
vol t s
i nt o
±
h
i g
h- i m
p
ed
ance
l oad
.
Wh
en
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c h
i s
set
t o
§
-
¥
an
d
t
he
T RI GG
ER
swi t c h
i s
set
t o
C
H
1
O
NL
Y O
R
§
- Y,
t
he
I nt ensi t y
M
odul at i on
h
or i zont al
( X- axi s)
d
ef l ect i on
i s
pr ovi de
d
by
t
he
si gnal
connect e
d
t o
t
h
e
I
NPU
T
CH
1
or
§
co
n nect or an d
t
he
I nt ensi t y
( Z- axi s)
mo
d
ul at i on
can be use
d t o
r el at e
±
ver t i cal
def l ect i on
i s
pr ovi de
d
by
t
he
si gnal
connect ed
t o
t
h
i r
d i t em of
el ect r i cal
ph
enomena
t o t he
ver t i cal
( Y- axi s)
2-
2
8
Ÿ¤
1
.
Set
t
he
H
O
R
I Z
DI S
PL
AY
swi t c
h
t o
§
- Y
.
2
.
Set
t
he
T
R
I GG
ER
swi t c h t o
CH
1
O
NL
Y
O
R
§
- Y
.
3
.
Connect
t
he
1
V
CA
L
1
kH
z
connect or
t o
t h e
I
NPU
T
CH
1
or
§
connect or
wi t
h
±
BN
C
cab
l e
.
4
.
Set
t
h
e
C
H
1
V
O
L
TS/ DI
V
swi t c
h t o
. 2
.
5
.
A
d
vance
t
h
e
I
N
T
EN
SI TY
cont r ol u n
t i l
t wo
d ot s
ar e
vi si
b
l e
on
t
h
e
CRT
.

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Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

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