Tektronix 454A - Page 132

P er f o r mance C h ec k - 454zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA ‘ / R 454A
µ . Ad j u st t h e
l ow- f r equency si gnal gener at or f or ± 4 d i vi -

24 . C h ec k ‘ an
d ’ T R I GG ER I N G LEVEL Con-
si on d i spl ay of 1 kH z si gnal .

t r ol R ange
d . C HE C K - C R T d
i s p l ay st ar t s on t h e posi t i ve sl ope of
t h e wavef or m .
e .
Set t h e ‘ T R I GG ER I N G S L O PE swi t c h t o - .
f . C HE C K - C R T di s p l ay st ar t s
on t h e negat i ve sl ope of
t h e wavef or m .
g . 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) .
h . C HE C K - C R T d i s p l ay st ar t s
on
t h e p osi t i ve sl o p e of
t h e wavef or m .
i . Set t h e ’ T R I GG ER I
N
G S
L
O
PE
swi t c h t o- .
j . C HE C K - C R T d i s p l ay st ar t s on t h e negat i ve sl o p e of
t h e wavef or m .
23 . C h
ec
k
Si ngl e Swee p O p er at i on
5- 1 8
± .
Connect t h e out p u t of t h e l ow- f r equency
si gnal gener -
at or t o t h e C H 1
i n p u t connect or an d t h e ‘ • §¤ T R I G
I NPU T connect or t h r o u g h
± BN C ¤ - connect or an d t wo
42- i nc h 50 © BN C cabl es .
b . Set t h e H O R I Z DI S PL AY
swi t c h t o ‘ , t h e ‘ an d ’
T R I GG ER I N G SO UR C E swi t c h es t o • §¤
an
d
t h e C H 1
VO L TS/ DI V swi t c h t o 1 .
c . Set t h e ‘ S WEEP M
OD
E swi t c h t o A U
TO T R I G .
d . A d j
ust t
h
e l ow- f r equency si gnal gener at or o u t p u t
am p l i t u d e f or ± 4 d i vi si o n d i s p l ay of ± 1 kH z si gnal .
e . C HE C K - R ot at e t h e ‘ T RI GG ER I N G LEVEL cont r ol
t h r oug
h
out i t s r ange an
d
ch ec
k
t h at
d
i s p l ay can be t r i gger e d
at
any
poi nt al ong
t h e p osi t i ve sl o p e of t h e wavef or m
( i ndi cat es
‘ T R I GG ER I N G LEVEL cont r ol
r ange of at
l east +
an
d -
2 vol t s) . Di s p l ay i s not
t r i gger e d at ei t h er
ext r eme
of r ot at i on .
f . Set t h e ‘ T R I GG ER I N
G S
L
O
PE
swi t c h t o - .
±
. Set t
h e H
O R I Z DI S PL AY swi t c h t o ‘ an d t h e ‘

g . C HE C K - R ot at e t h e ‘ T R I GG ER I N G LEVEL cont r ol
T R I GG ER I N
G S
L
O
PE
swi t c h t o
+ .

t h r o u g h
out i t s r ange an d c h ec k t h at d i s p l ay can be t r i gger ed
at any p oi nt al ong t h
e negat i ve sl o p e of t h e wavef or m
( i n d i cat es ‘ T R I GG ER I N G LEVEL cont r ol
r ange of at
b .

I f necessar y, a d j u st t h e ‘ T RI GG ER I N
G
LEVEL

l east + an d - 2 vol t s) .
cont r ol f or ± st a b l e d i s p l ay .
h . Set t h e C H 1 VO L TS/ DI V swi t c h t o 10 and t h e ‘
µ . Set t h e ‘ S WEEP M OD E swi t c h t o SI N G LE S WEEP .

T R
I GG
ER I N
G SO UR C E swi t c h t o • §¤ =10 .
d . Di sconnect t h e si gnal f r om t h e C H 1 i n p ut connect or .

i .

Ad j u st

t h e

l ow- f r equency si gnal gener at or o u t p u t
am p l i t u d e f or ± 4 d i vi si on d i s p l ay of ± 1 kH z si gnal .
e . P r ess t h e RE S E T b ut t on .
j . C HE C K - R ot at e t h e ‘ T R I GG ER I N G LEVEL cont r ol
t h r ou g h out i t s r ange an d ch ec k t h at di s p l ay can be t r i gger e d
f . C HE C K- RE S E T l i g h t m u st come on w h en but t on i s

at any poi nt al ong t h e negat i ve sl o p e of t h e wavef or m
p r esse d an d r emai n on u nt i l si gnal i s r e- a pp l i e d an d swee p i s

( i ndi cat es ‘ T R I GG ER I N G LEVEL cont r ol r ange of at
com p l et e d .

l east
+
an d - 20 vol t s) . Di sp l ay i s not t r i gger e d at ei t h er
ext r eme of r ot at i on .
g . R econnect t h e si gnal t o t h e C
H 1 i n p ut connect or .
k . Set t h e ‘ T R I GG ER I N G S L O PE swi t c h t o
+ .
h .
C HE C K - ‘ si ngl e- swee p d i s p l ay ( one swee p
onl y) i s
p r esent ed . RE S E T l i g h t must go of f at t h e en d of t h
e swee p

™
.
C HE C K -
R ot at e t h e ‘ T R I GG ER I N G LEVEL cont r ol
an
d
r emai n of f unt i l t h e RE S E T but t on i s p r esse
d agai n .

t h r oug h o u t i t s r ange an d c h ec k t h at d i s p l ay can b e t r i gger e d