EasyManuals Logo

Tektronix 454A User Manual

Tektronix 454A
365 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #87 background imageLoading...
Page #87 background image
T
h
i s
p
ul se
t
u
r ns
Q969
on
an d
0963
of f
t o
enabl e
t
h
ezyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
’
M
OD
E
swi t c
h
i s
set
t o
t
h
e ’
STA
R
TS
A
F
T
ER
D
EL
AY
swee
p
,
and
al so
t ur ns
Q987
on
and
Q974
of f
t o
pr ovi
d e
TI ME
p
osi t i on,
t
h
e
set t i ng
of
t
h
e
H
O
R
I Z
DI S
PL
AY
swi t c
h
,
a
dd
i t i onal
u
nbl an
k
i ng
d
u
r i ng
t
h
e
’
swee
p p
or t i on
of
±
S1001A,
d
et er mi nes oper at i on
of
t
h
e
Swee
p
Gat e
t unnel
M
I X
E
D
d
i s
p
l ay
.
Si nce
t
h
e
’
swee
p
p
or t i on
of
t
h
e d
i s
p
l ay
d
i o
d
e
.
I n
t
h
e
‘
p
osi t i on,
t
h
e
’
t r i gger
p
ul ses
ar e
b
l oc
k
e
d
i n
wi l l
nor mal l y
be
at
±
f ast er
swee
p
r at e
t
h
an
t
h
e
‘
swee
p
t
h
e
’
Tr i gger
Gener at or
ci r c
u
i t
so
t
h
e
’ Swee
p
Gener at or
p
or t i on,
t
h
e ’
swee
p p
or t i o
n
woul d
a
pp
ear
di mmer
wi t
h
o
u
t
cannot be
t r i gger e
d an d d
oes not
p
r o
d
uce
±
swee
p ( not e
t
h
e ad
di t i onal
un
b
l an
k
i ng
.
t
h
at
t
h
e
’ Sweep
O
u
t
p
u
t
B
uf f er ,
Q929,
i s
al so
h
el
d
r ever se
bi ase
d
i n
t
h
i s
posi t i on)
.
I n
t
h
e
‘
™• ¤• •
D
UR
I
N
G ’
an
d
’
( D
EL
AY
E
D
S
WEEP)
p
osi t i ons,
- 12
vol t s
i s
connect ed
t o
T
h
e
d el ayed
sweep
l oc
k
out
gat e
f r om
t
h
e
L
oc
k
o u
t
Gat e
t
h
e cat
h
od
e
of
C
R
902
t
h
r oug
h
R
901,
R
961
an d
R
962
.
T
h
i s
Am
p
l i f i er
st age
i n t
h
e
‘
Swee
p
Gener at or
ci r c
u
i t i s
con-
vol t age
p
u
l l s
t
h
e
cat
h
o
d e of
C
R
902
negat i ve
enoug
h so
t
h
at
nect e d t o
t
h
e
base
of
Q984
t
h
r ou
g
h
R
993,
C
R
991
an d
i t
a
u
t omat i cal l y swi t c
h
es
t o
i t s
h
i g
h
- vol t age
st at e af t er
i t i s
C
R
992
.
T
h
i s
gat e
goes negat i ve
w
h
en
t
h
e
‘
swee
p
ends,
a
nd
ena
b
l ed
by
t
h
e ’
Swee
p
R
eset
Mu
l t i vi br at or
.
T
h
i s
p
r o
d
u
ces
posi t i ve
af t er
t
h
e
‘
swee
p
h
ol
d
of f
t i me
.
T
h
er ef or e,
Q984
i s
±
f r ee- r unni ng ’
swee
p
si mi l ar
t o
t
h
e
no- t r i gger
A
U
TO
t ur ne
d
on
at
t
h
e
en
d
of
t
h
e
‘
swee
p
,
an d
i s
h
el
d
on
unt i l
T
R
I G
mode
i n t
h
e
‘
Swee
p
Gener at or
.
H
owever ,
si nce
t
h
e
af t er
t
h
e
‘
swee
p
h
ol
d
of f
t i me
.
H
owever ,
t
h
e base of
Q984
’
swee
p
i s
r eset
( an
d
aut omat i cal l y
r et r i gger ed)
at
±
f i xe
d
r emai ns
negat i ve d ue
t o
t
h
e
c
u
r r ent
t
h
r oug
h
Q996A,
an d
p
oi nt
on
t
h
e
‘
swee
p
sawt oot
h
,
t
h
e
d
i s
p
l ay
i s
r el at i vel y
t
h
e
’
sweep
i s
h
el
d
l oc
k
e
d ou
t
u
nt i l t
h
e
Del ay-
P
i c
kof f
Com-
st abl e
.
T
h
e best
d
el ayed
swee
p
st abi l i t y
i s
p
r ovi
d e
d
i n t
h
e
p
ar at or st age
i s
swi t c
h
ed
by
t
h
e
i ncomi ng
‘
sweep
si gnal
T
R
I GG
ER
A
BLE
A
F
T
ER
D
EL
AY
TI ME
p
osi t i on,
h
owever ,
( see
Del ay-
P
i c
k
of f
Com
p
ar at or
d
i scussi on)
.
T
h
i s
conf i g
u
r a-
si nce
t
h
e ’
swee
p
i s
i ni t i at e
d
by
t
h
e
t r i gger
si gnal
i n t
h
i s
t i on
al l ows
accur at e
d
el ayed
swee
p
measur ement s
w
h
en
t
h
e
mo
d
e
.
DELAY- TI ME
MUL
TI
PL
I
ER
cont r ol
i s
set
near
0
b y
l oc
k
i ng
o
u
t
any
c
h
anges
i n t
h
e
qu
i escent
l evel
of
t
h
e
‘
N
ot e
t
h
at
t
h
er e
i s
no
h
ol
d
of f
ci r c
u
i t
i n t
h
e ’
Swee
p
sawt oot
h
w
h
i c
h
occur
d
u
r i ng
t
h
e
‘
swee
p
r eset
an d
h
ol
d of f
Reset
M
ul t i vi
b
r at or st age
.
T
he ’
Swee
p
Gener at or
ci r c
u
i t i s
t i me
.
I f
t
h
e
’
swee
p
i s
st i l l
r
u
nni ng
w
h
en
t
h
e
‘
swee
p
not
r eset
at
t
h
e
end
of
t
h
e
’
swee
p
r ecover y,
b
u
t
i s
r eset
r eset s,
t
h e negat i ve- goi ng por t i on of
t
h
e del ayed
swee
p
af t er
t
h
e
end
of
t
h
e
‘
swee
p
by
t
h
e
Del ay
Mu
l t i vi br at or
l oc
k
out
gat e
connect e
d
t o
Q984
r eset s
t
he ’
sweep
al so
.
( see
p
r evi o
u
s
d
i sc
u
ssi on)
.
Swee
p
R
eset
M
ul t i vi br at or
M
i xe
d
Swee
p
B
l an
k
i ng
M
ul t i vi br at or
Ci r cui t
Descr i pt i on- 454
‘
/
R
454A
T
h
e
b
asi c
’ Sweep
R
eset
Mu
l t i vi br at or
conf i g
u
r at i on
Tr ansi st or s
Q974
an d
Q978
com
p
r i se
±
bi st abl e
m
u
l t i vi -
an d
o
p
er at i on
i s
t
h
e
same
as
f or
‘
swee
p
.
H
owever ,
sever al
b
r at or
ver y
si mi l ar
i n
conf i g
u
r at i on
t o
t
h
e
Swee
p
R
eset
di f f er ences
d
o
exi st
.
’
swee
p
d oes
not
h
ave ±
swee
p
l engt
h
Mu
l t i vi br at or
.
T
h
e pur
p
ose of
t
h
e
M
i xed
Swee
p
B
l an
k
i ng
net wor
k
f or
var i a
b
l e
swee
p
l engt
h
,
or ±
H
ol
d of f
Ca
p
aci t or
M
ul t i vi br at or
i s
t o
p
r ovi
d
e
a
dd
i t i onal
un
b
l an
k
i ng
dur i ng
t
h
e
a
n
d
associ at e
d
ci r c
u
i t
t o
r eset
t
h
e
’
Swee
p
R
eset
M
ul t i vi -
’
swee
p
p
or t i on
of
±
mi xe
d
swee
p
d
i s
p
l ay
.
B
ecause
t
h
e
’
br at or
af t er
t
h
e
r et r ace
.
I nst ead,
t
h
e
negat i ve- goi ng
swee
p
Swee
p
Gener at or
i s
nor mal l y
r unni ng
at
±
f ast er
swee
p
r at e
f r om
t
h
e
’ Swee
p
R
eset
E
mi t t er
F
ol l ower ,
Q938
B
,
i s
con-
t
h
an
t
h
e
‘
Swee
p
Gener at or
i n ±
mi xe
d
swee
p d
i s
p
l ay,
t
h
i s
nect e d
t o
t
h
e
base of
Q963
t
h
r o
u
g
h
C
R
967
.
Di o
d
e
C
R
967
a
d
di t i onal
unbl an
k
i ng
r educes
t
h
e
i nt ensi t y
d
i f f er ences
b
e-
i s
f or war
d
bi ase
d
w
h
en
t
h
e
swee
p vol t age at
t
h
e
emi t t er of
t ween
t
h
e
t wo
p
ar t s
of
t
h
e
di s
p
l ay
.
Q938
B
dr op
s
abo
u
t
0
. 5
vol t
mor e
negat i ve
t
h
an
t
h
e
l evel
at
t
h
e
base of
Q963
est a
b
l i s
h
ed
by
vol t age d
i vi
d
er
R
966- 13967
b
et ween +12
vol t s
and
t
h
e
col l ect or
of
Q969
.
T
h
en
Q963
Dur i ng
t
h
e
‘
Swee
p p or t i on
of ±
mi xe
d
swee
p
di s
p
l ay,
t ur ns
on
an
d
i t s
col l ect or
goes p
osi t i ve
t o
swi t c
h
t
h
e
’
t r ansi st or
Q978
i s
of f
a
n
d
Q974
i s
on
.
At
t
h
e
en
d
of
t
h
e
Swee
p
Gat e
t unnel
d
i o
d
e,
C
R
902,
t o
i t s
l ow- vol t age
st at e
del ay
t i me,
± negat i ve p
u
l se
i s
co
u
p
l e
d
t o
t
h
e
base
of
Q978
w
h
i c
h
r eset s
t
h
e
’
swee
p
.
Q963
r emai ns
on
an
d
h
ol ds
t
h
e
’
f r om
t
h
e
col l ect or
of
Q984
by
cap
aci t or
C983
.
Q978
i s
Swee
p
Gat e
t u
nn
el
d
i o
d
e
l oc
k
e
d
ou
t
unt i l
t
h
e
’ Swee
p
t ur ned
on
an
d
i t s
col l ect or
goes
p
osi t i ve
.
T
h
i s
p
osi t i ve
R
eset
Mu
l t i vi br at or
i s
r eset
b y
t
h
e
Del ay
M
ul t i vi br at or
( see
movement
i s
cou
p
l e
d
t o
t
h
e
base of
Q974
t
h
r oug
h
Del ay
M
ul t i vi br at or
d
i scussi on)
.
C977-
R
977
an d
t
u
r ns
Q974
of f
.
At
t
h
e
same
t i me
t
h
at
Q978
i s
t ur ne
d on,
t
he
p
ul se
f r om
C983
al so
t
u
r ns
Q969
on,
a
n
d
i t s
col l ect or
goes p
osi t i ve
.
T
h
e
n
egat i ve
movement
Wh
en
t
h
e
’
Swee
p
R
eset
M
ul t i vi br at or
i s
r eset
by
t
h
e
of
t
h
e
col l ect or
of
Q974
an
d
t
h
e p
osi t i ve
movement
of
t
h
e
Del ay
Mu
l t i vi
b
r at or ,
0969
comes
on an
d
0963
t ur ns
of f
.
col l ect or
of
Q969
ar e
ad d e
d
t oget
h
er ,
so
t
h
at
t
h
e net
T
h
e
col l ect or
of
Q963
goes
negat i ve
and
t
h
e
’
Swee
p
Gat e
c h
ange
at
t
h
e base of
Q948
i s
an a
pp
r oxi mat el y
0
. 6
vol t
t
u
nnel d
i o
d
e,
C
R
902,
i s
ena
b
l ed
.
T
h
e
st at e
i
n
w
h
i c
h
C
R
902
mor e
p
osi t i ve
l evel
.
T
h
e
i ncr ease
d
con
d
uct i o
n
of
Q948
r emai ns
de
p
en
d
s
upon
t
h
e
’
S
WEEP
M
OD
E
swi t c
h
an
d
t
h
e
causes
i t s
col l ect or
t o
st e
p
sl i g
h
t l y
mor e
negat i ve
t o
f
u
r t
h
er
H
O
R
I Z
DI S
PL
AY
swi t c
h
.
Wh
en
t
h
e
’
S
WEEP
M
OD
E
unbl an
k
t
h
e
C
R
T
d
i s
p
l ay
.
T
h
en,
at
t
h
e
en
d
of
t
h
e
’ Sweep
swi t c
h
,
S835,
i s
set
t o
t
h
e
T
RI GG
ER
A
BLE
A
F
T
ER
t i me,
Q963
t
u
r ns
on
an d
Q969
t
u
r ns
of f
.
T
h
e
negat i ve
D
EL
AY
TI ME
p
osi t i on,
C
R
902
i s
b
i ase
d
so
i t
can be
movement
at
t
h
e base of
Q948
i s
s
u
f f i ci ent
t o
ca
u
se
t ot al
swi t c
h
ed
t o
i t s
h
i g
h
- vol t age
st at e
by
t
h
e
next
t r i gger
pul se
bl an
k
i ng
of
t
h
e
C
R
T
an d
t
h
e
r emai ni ng
p
ar t
of
‘
Swee
p
i s
f r om
t
h
e
’ Tr i gger
Gener at or
.
H
owever ,
i f
t
h
e
’
S
WEEP
n
ot seen
.

Table of Contents

Other manuals for Tektronix 454A

Preview: Operator's Handbook
Operator's Handbook20 pages

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Tektronix 454A and is the answer not in the manual?

Tektronix 454A Specifications

General IconGeneral
BrandTektronix
Model454A
CategoryTest Equipment
LanguageEnglish

Related product manuals