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Tektronix 454A User Manual

Tektronix 454A
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3
.
Sel ect
t
h
e
amou
n
t
of del ay
f r om
t
h
e
st ar t
of zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
Swee
p
wi t h
t
h
e
DELAY- TI ME
MUL
TI
PL
I
ER
d
i al
.
Del ay
t i me
can
b e
cal cul at e
d
i n
t
he
nor mal
ma
nner
.
4
.
Set
t
h
e
S
WEEP
M
OD
E
swi t c h
t o
STA
RTS
A
F
T
ER
DEL
AY
TI ME
.
5
.
Connect
t
he
+
GAT
E
si gnal
t o
t h
e ext er nal
equi p
me
n
t
.
¹
¹ ¹
¹ ¹
6
.
T
h
e
d
ur at i o
n of
t
h
e
+
GAT
E
si g
n
al
i s
d et er mi n
e
d
¯ ¯
b y
t
h
e
set t i ng
of
t
h e
¤™œ
/ DI
V
swi t c h
.
F
i g
.
2- 26
.
M
eas
u
r i ng
pu
l se
j
i t t er
.
¹
J
i t t er
- 4i
[
-
E
xam
p
l e
.
Assume
t
h
at
t
he
h
or i zo n
t al
movement
i s
0
. 5
d
i vi si on
( see
F
i g
.
2- 26) ,
a n
d
t
he
¤™œ
/ DI
V
swi t c
h
set t i
n
g
Sweep
Tr i gge
r
ed
E
xt er nal l y
.
T
h
i s
mo
d e of o
p
er at i o
n
i s
0
. 5
¼
s
.
can
be
u
se
d t o
p
r o
d
uce
±
del aye
d
t r i gger
wi t
h
or
wi t
h
out
±
cor r es
po nd
i
n
g
di s
p
l ay
.
Connect
t
h
e
ext er nal
t r i gger
si g nal
t o
t
h
e
§¤ T
R
I G
I
NPU
T
connect or
an
d
set
t
h
e
U
si ng
t
he
f or m
u
l a
:
SO
UR
C
E swi t ch t o
EXT
.
F
ol l ow
t
he o
p
er at i o
n gi ven
above
t o
obt ai n
t h e
d
el ayed
t r i gger
.
h
or i zont al
¤™œ
/ DI
V
P
ul se
J
i t t er
=
j
i t t er
§
set t i ng
(
d
i vi si ons)
7
.
T
h
e
ext er nal e
q
u
i
pment
wi l l
b
e
t r i gger e
d
at
t
h e
st ar t
of
t
h e
i nt ensi f i e
d p or t i on
i f
i t
r es
p
onds
t o
p
osi t i ve- goi ng
t r i gger s,
or at
t h e
en
d
of
t
h e
i nt ensi f i e
d
por t i on
i f i t
r e-
s
p
on
d
s
t o
negat i ve- goi ng
t r i gger s
.
N
or mal
Tr i gger
Gener at or
Op
er at i ng
I nst r uct i ons- 454
/
R
454A
Or
d
i
n
ar i l y,
t
he
si gnal t o
b
e
di s
p
l ayed
al so
p
r ovi
d
es
t
h
e
Su
b
st i t ut i ng
t
h
e gi ven val ues
:
t r i gger
si gnal
f or
t
h
e
osci l l osco
p
e
.
I n
some
i nst ances,
i t
may
be
desi r a
b
l e
t o
r ever se
t
h
i s
si t uat i o
n and have
t
he
osci l l osco
p
e
t r i gger
t
h
e
si gnal
sour ce
.
T
h
i s
can
be
done
by
P
ul se
J
i t t er
=
0
. 5
§
0
. 5
¼
s
co
n
nect i ng
t
h
e
+
GAT
E
si g
n
al
t o
t
he
i
n
put
of
t
h
e
si gnal
sour ce
.
Set
t
he
LEVEL
cont r ol
f ul l y
cl oc
k
wi se,
T
h
e
p
ul se
j
i t t er
i s
0 . 25
mi cr osecon
d
.
S
WEEP
M
OD
E swi t c h
t o
A
U
TO
T
R
I G
and
ad
j
ust
t
he
¤™œ
/ DI
V
swi t ch f or
t
he
desi r e
d
d
i s
p
l ay
.
Si nce
t
he
si gnal
sour ce
i s
t r i gger ed
by
±
si gnal
t
h
at
h
as
±
f i xe
d
t i me
r el at i ons
h
i
p
t o
t
he
swee
p
,
t
he
out
p
ut
of
t
he
si gnal
sour ce
Del aye
d
Tr i gger
Gener at or
can
be
d
i spl ayed
on
t h
e
C
R
T
as
t
h
oug
h
t
he
454
wer e
t r i gger e
d
i n
t
h
e
nor mal
ma
nn
er
.
T
h
e
+
GAT
E
out
p
ut si gnal
can
be
used
t o
t r i gger
an
ext er n
al
devi ce
at
±
sel ect ed
del ay
t i me
af t er
t h
e
st ar t
of
Sweep
.
T
he
d
el ay
t i me
of
t
he
+
GAT
E
o
u
t pu
t
si gnal
can
M
ul t i - Tr ace
Ph
ase
Di f f er ence
M
easur ement s
be
sel ect e
d by
t
he
set t i
ng of
t
he
DELAY- TI ME
MUL
TI
PL
I
ER
d
i al
an
d
¤™œ
/ DI
V
swi t c h
.
Ph
ase
compar i son
b
et ween
t wo
si gnal s
of
t
he
same
f r e
q
uency
can
b
e
ma
de usi ng
t h
e d
ual - t r ace
f eat ur e
of
t
he
454
.
Th
i s
met
ho d of
p
h
ase
d
i f f er ence
measur eme
n
t
can
Swee
p
Tr i gger e
d
I nt er nal l y
.
Wh
e
n
swee
p
i s
be
u
se
d
up
t o
t
h
e
f r eque
n
cy
l i mi t
of
t
he
ver t i cal
syst em
.
To
t r i gger e
d
i nt er nal l y
t o
pr o d
uce
±
nor mal
di s
p
l ay,
t
h
e
ma
ke
t
he
compar i so
n
,
use
t
he
f ol l owi ng
pr oce
d
ur e
:
del aye
d
t r i gger
may
b e o
b
t ai
ned
as
f ol l ows
:
1
.
Set
t he
I n
p ut
Co
u
pl i
ng
swi t c h
es
t o
t
h
e
same
p
osi t i on,
1
.
Ob
t ai
n ±
t r i gger
d
i s
p
l ay
i
n
t
he
n
or mal
manner
.
d
epe
nd
i ng
on
t h
e
t ype
of
cou
p
l i ng
d
esi r ed
.
2
.
Set
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c
h
t o
¤•
2
.
Set
t
h
e
M
OD
E
swi t c
h
t o
ei t
h
er
C
H
O
P or
A
L
T
.
I n
D
UR
I
N
G
.
gener al ,
C
H
O
P
i s
mor e
sui t abl e
f or
l ow- f r equency
si gnal s

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Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

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