Tektronix 454A - Page 121

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Set t h e i nst r u ment cont r ol s t o t he set t i ngs
gi ven u n d er
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r el i mi nar y Cont r ol Set t i ngs .
1 . C h ec k Tr ace Al i gnment
c . A dj ust t he F OC US cont r ol f or
as s h ar p ± d i s p l ay as
p ossi bl e .
d . C HE C K- T h
e
t r ace
s
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be p ar al l el wi t h t h e cent er
l i ne .
e . I f necessar y, ad j ust t he T R AC E
R OTATI O N ad j ust -
ment , ( on si d e p anel ) so t h e t r ace i s p ar al l el t o t he h or i -
zont al
gr at i c u l e l i nes .
2 . C h ec k Ast i gmat i sm
± . Connect t he 2901 Ti me- M ar k Gener at or
t o t he I NPU T
CH 1 connect or wi t h t h e 42- i nc h
BN
C ca b
l e
.
c .
Set
t h
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TS/ DI
V
swi t c h so t he l ar ge mar k er s
ext en d beyon d t he b ot t om an d t o p of t h e gr at i cul e ar ea .
DI S
PL AY and Z- AXI S
C HE CK
Eq ui pment R eq ui r e d
1
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Ty p e 2901 Ti me- M ar k Gener at or
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5 . 50 © I n- Li ne G R Ter mi nat i on
2 . Ty pe
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191
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M e d i u m- F r e q u ency
Const ant - Am p l i t ud e
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6 . BN C ¤ - Connect or
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BN C- To- Al l i gat or Cl i p Ad a p t er
4 . F i ve- N
anosecon d GR Ca b l e
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8 . T h r ee- I nc h Scr ew d r i ver
P er f or mance C
h ec k - 454 ‘ / R 454A
Cont r ol Set t i ngs
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d . Set t he ‘ LEVEL
cont r ol f or ± st a b l e d i s p l ay .
e . C HE
CK - M ar k er s s ho u l d b e wel l d ef i ne d
wi t h o p t i -
mum set t i ng
of t
h
e
F
OC US cont r ol .
± . Ad vance t he I N T EN SI TY cont r ol u nt i l t
h e t r ace i s
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f . I f necessar y, a d j ust t h
e
F
OC US cont r ol an d ASTI G
vi si bl e .
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ad j u st ment ( on si d e panel ) f or best def i ni t i on
of mar k er s .
b . T u r n t he CH 1 P
OSI TI O
N cont r ol
t o move t he t r ace
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3 . C hec k ¥ Axi s Al i gnment
and Geomet r y
t o t he cent er h or i zont al l i ne .
± . Set t h
e
h
or i zont al P OSI TI O N cont r ol t o
move ± l ar ge
mar k er t o t h e cen
t er ver t i cal l i ne .
b . C HE CK - M ar k er p ar al l el
t o t h e cent er ver t i cal l i ne
wi t h i n 0 . 1 d i vi si on .
µ . Set t he h
or i zont al
P
OSI TI ON an d ‘ V A R I A BLE con-
t r ol s so ± l ar ge mar k er
coi nci
d
es wi t h eac h ver t i cal gr at i c u l e
l i ne .
d .
C HE CK - B owi ng and t i l t of mar k er s
over ent i r e di s-
pl ay ar ea wi t h
i n 0 . 1 di vi si on or l ess .
e . Di sconnect al ™ t est e q ui p ment .
f .
CA L I BR ATI O N - See st e p s 10 an d 11
of A d j ust ment
p r oce d ur e .
b . Set t h e t i me- mar k gener at or f or out p ut mar k er s of 1
an d 0 . 1 mi l l i second .

4 . C h ec k E xt er nal –
Axi s O p er at i on
± . C h ange t he f ol l owi ng cont r ol set t i ngs
:
ASO UR C E
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‘
and ’ ¤™œ• / DI V

20 ¼ s
5- 7