Tektronix 454A - Page 162

Ad j ust ment - 454zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA ‘ /
R 454A
f . C HE C K - One mar k er each
d
i vi si on
bet ween t he f i r st -

g .
R e p eat p ar t s b t h r oug h e unt i l no s h i f t occur s w h en
an d ni nt h - d i vi si on ver t i cal
l i nes ; mar k er at ni nt h - d i vi si on

t h e M AG swi t c h i s set t o O FF .
ver t i cal l i ne m u st
b
e
wi t h i n 0 . 32 d i vi si on ( wi t h i n 4° / ¿ )
of t h e
l i ne
w h
en
t he mar k er at t h e f i r st - di vi si on
ver t i cal l i ne i s
p osi t i one d exact l y .

30 . A d j ust ’ Swee p
Cal i br at i on
g . R e p eat
t h i s c h ec k f or eac h ei g h t di vi si on
p or t i on of
t
h
e
t ot al magni f i e d swee p l engt h .
h . Set t h e h
or i zont al P OSI TI ON and F I NE cont r ol s
t o
mi d r ange .
5-
48
i . P osi t i on ± mar
k er t o t he f i r st - d i vi si on ver t i cal l i ne .
j . C HE CK - N l ar k er wi t h i n 0 . 1
di vi si on ( wi t h i n 5° / ¿ ) of t h e
t h i r d- d i vi si on ver t i cal l i ne .
k . P osi t i on t h e mar ke r near est t he
second- d i vi si on
ver t i cal l i ne t o t h at l i ne .
™ . C HE CK - Mar
k
er
wi t h i n 0 . 1 d i vi si on ( wi t h i n 5%) of
t h
e
f ou r t h -
d i vi si on ver t i cal l i ne .
m . Cont i nue t h i s c hec k
f or eac h t wo- d i vi si on p or t i on of
t h e d i s p l aye d swee p
wi t h i n t he cent er ei g h t d i vi si ons of t h e
gr at i cul e .
· . I N T ER ACTI O
N - C hec k st e p 33 .
29 . A d j ust M
l agni f i er R egi st er
b .
P osi t i on - t h e mi dd l e mar k er ( t h r ee mar k e r s on
t ot al
magni f i e d swee p ) t o t he cent er ver t i cal l i ne .
c . Set t he œ‘ G swi t c h t o O FF .
± . Set
t he
DELAY- TI ME
MUL TI PL I ER d i al t o 0 . 10, t h e
’ ¤™œ• / DI V swi t c h t o 1 ms, t he ’ S WEEP M OD E swi t c h
t o T R I GG ER A BLE A F T ER D EL AY TI ME, t he HORI Z
DI S PL AY swi t c h t o ’ ( D EL AY E D S WEEP) , an d t h e M AG
swi t c h t o O FF .
b . Set t
h
e t i me- mar
k gener at or f or one- mi l l i secon d
mar k er s .
c . Set t he ’ T RI GG ER I NG
LEVEL
cont r ol
f or
±
st a b
l e
di s p l ay .
d . C HE CK - C R T d i s p l ay f or one mar k er eac h d i vi si on
b et ween t h e f i r st an d ni nt h d i vi si on ver t i cal l i nes .
e . ADJUST- 13 Sweep Cal a d j u st ment , R 932 ( see F i g .
5- 16 ‘ ) , f or one mar k er eac h d i vi si on .
f . P osi t i on t h e secon d mar k er t o t h e f i r st - d i vi si on ver t i cal
l i ne .
g . C HE C K- F o u r t h mar
k
er wi t h i n 0 . 1 d i vi si on ( wi t h i n
5%) of t h e t h i r d - d i vi si on ver t i cal l i ne .
h . P osi t i on t he t h i r d mar k er t o t h e second- di vi si on
ver t i cal l i ne .
± . Set t he t i me- mar k gener at or f or
f i ve- mi l l i secon d
mar k er s .

i . C HE C K- F i f t h mar k er wi t h i n 0 . 1 d i vi si on
( wi t h i n 5%)
of t h e f o u r t h - d i vi si on ver t i cal l i ne .
j .
Cont i nue t
h
i s c
h
ec
k
f or eac h t wo- d i vi si on p or t i on of
t he sweep
wi t h i n t h e cent er ei g h t d i vi si ons of t h e gr at i c u l e .
31 . A d j ust ‘ and ’ One
M i cr osecon d Ti mi ng
d . C HE C K- M i dd l e mar k er s h o u l d r emai n at t he cent er

± . Set
t h e ‘ an d ’ ¤™œ• / DI V swi t c h t o 1 ¼ s an d t he
ver t i cal l i ne .

H O R I Z DI S PL AY swi t c h t o ‘ .
e . AD JU ST= M ag R egi st er ad j ust ment R 1031 ( see F i g .

b . Set t he t i me- mar
k
gener at or f or one- mi cr osecond
5- 17) , t o p osi t i on t h e mi d d l e mar k er t o t h e cent er ver t i cal

mar
k
er s .
l i ne .
c . A d j ust t he ‘ T RI GG ER I NG LEVEL cont r ol f or ±
f . Set t h e M AG swi t c h t o § 10 .

st abl e di s p l ay .