Tektronix 454A User Manual

D . I N
D
U
CTO R S .
C
hec
k
f or o p en i n d u ct or s by c h ec k i ng

NOTE
cont i nui t y wi t h
an o
h
mmet er
.
S
h
or t ed or p ar t i al l y s h or t e d
i n d uct or s can usual l y be f ound by chec k i ng t h
e wavef or m

Wh
en sel ect i ng r epl acement par t s, i t i s i mpor t ant t o
r es p onse w hen h i g h - f r e q uency si gnal s ar e p asse d t hr ou g h

r emember t h at t
h e p
h
ysi cal si ze an d s h ape of zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA ± com-
t he ci r c u i t . P ar t i al s h or t i ng of t en r e d u ces h i g h - f r e q uency

ponent may af f ect
i t s per f or mance i n t h e i nst r ument ,
r es p onse ( r ol l - of f ) .

par t i cul ar l y
at h i g h f r e
q uenci es . ‘ / / r epl acement par t s
s h oul d be d i r ect r epl acement s
unl ess i t i s k nown t h at
± di f f er ent co m ponent wi l l not adver sel y
af f ect
e . CA P ACI TO RS . ‘ l ea ky or s hor t ed cap aci t or can best

i nst r ument per f or mance .
b e d et ect e d b y chec k i ng r esi st ance wi t h an o h mmet er on
t h e h i g h
est scal e . Do not excee d t he vol t age r at i ng of t he
cap aci t or . T he r esi st ance r ea d
i ng s houl d be h i g h af t er i ni t i al

S p eci al P ar t s .
I n a
dd
i t i on t o t h e st andar d el ect r oni c com-
char ge of t he ca p aci t or . An o p en cap aci t or
can best b e

p onent s, some s p eci al p ar t s ar e
use
d
i n t he 454 ‘ . T h ese
d et ect e d wi t h ± ca p aci t ance met er or by c hec k i ng i f t h
e

p ar t s ar e manuf act ur e d or sel ect e d by
Te
k
t r oni x, I nc . t o
cap aci t or p asses AC si gnal s .

meet s p eci f i c

p er f or mance r e q ui r ement s, or ar e
manu-
f act ur ed f or Te k t r oni x, I nc . i n accor d ance wi t h our s p
eci f i -
cat i ons . T h
ese
s p
eci al p ar t s ar e i ndi cat e d i n t h e p ar t s l i st b y
F .

REE D- DR I VE

COI L . T he

r eed- d r i ve coi l
can be

an ast er i s k p r ece d i ng t h e p ar t
number .
M
ost of t h e mec h a n -
c hec k e d f or cor r ect o p er at i on as f ol l ows ( t he coi l h as
f our

i cal p ar t s use d i n t h i s i nst r ument h ave been
manuf act ur e d
mo u nt i ng l eads f or r i gi d i t y ; ma k e measur ement s b et ween

b y
Te
k
t r o n i x, I nc . Or d er al l s p eci al p ar t s d i r ect l y f r om your
t h
e t wo l ea d s on ei t h er en d of t he coi l ) : 1) C hec k t he DC

l ocal Te k t r oni x F
i el d Of f i ce or r e p r esent at i ve .
r esi st ance of t h
e coi l wi t h an o h mmet er ; t y p i cal r esi st ance
val ues ar e gi ven i n t h e el ect r i cal
p ar t s l i st . 2) C hec k t he DC
vol t age d r op acr oss t he coi l w h en t he act uat i ng
l evel i s

Or der i ng P ar t s . Wh en or d er i ng
r epl acement p ar t s f r om
a pp l i e d . 3) I f bot h t he r esi st ance an d vol t age ar e
cor r ect ,

Te k t r oni x, I nc . , i ncl u d e t he f ol l owi ng i nf or mat i on
:
t he coi l can be ass u me d t o b e cor r ect ;
c hec k t he r eed r el ay
p osi t i on
an d cont i n u i t y . 4)

I f t he r esi st ance
i s i ncor r ect

1 .
I nst r ument Ty p e .
( t a k e i nt o
account s u r r oun d i ng ci r c u i t r y) , d i sconnect
t he
coi l an d c hec k t he
r esi st ance agai n . 5) I f t h e vol t age acr oss

2 . I nst r u ment Ser i al N umber
.
t he coi l i s i ncor r ect b u t t h e
coi l r esi st ance i s cor r ect , c h ec k
t h
e ci r cui t or i gi nat i ng t he act u
at i ng l evel .

3 . ‘ d escr i p t i on of t h
e p ar t ( i f el ect r i cal , i ncl u d e ci r c u i t
n u m b e r ) .
9 . R e p ai r an d R ead j ust t h
e Ci r cui t . I f any def ect i ve p ar t s
ar e
l ocat e d , f ol l ow t he r e p l aceme
n t pr oce d ur es gi ven i n t h i s
sect i on .
B e sur e t o c h ec k t he p er f or mance
of any ci r cui t
t h at h as bee n
r e p ai r e d or t h at h as h ad any el ect r i cal
com p o-
nent s r e p l ace d .
Gener al
C . RE SI STO R S . R esi st or s can be c hec ke
d wi t h
an o
h m-

many of t he st a n d ar d el ect r oni c com p onent s can be ob-
met er . C hec k t h e E l ect r i cal P ar t s L i st f or t h
e
t ol er ance
of

t ai ne d l ocal l y i n l ess t i me t han i s r e q ui r e d t o or d er t h em
t he r esi st or s use d i n t h i s i nst r ument . R esi st or s nor mal l y d
o

f r om Te k t r oni x, I nc . B ef or e pu r c hasi ng or or d er i ng r e p l ace-
not nee d t o be r e p l ace d unl ess t he measur e d val ue var i es

m ent p
ar t s, c hec
k
t h e p ar t s l i st f or val u e, t ol er ance, r at i ng
wi d el y f r om t h e s p eci f i e d val ue .

an d d escr i p t i on .
CO RRE CTI VE M AI N T EN A N
C
E
Cor r ect i ve mai nt enance consi st s
of com p onent r e p l ace-
ment
an d i nst r u ment r e p ai r . Sp eci al
t ec h ni q u es r e q u i r e d t o
r epl ace com
p onent s i n t h i s i nst r u ment ar e
gi ven h er e .
4 . Te kt r oni x P ar t Nu mber .
Sol d er i ng Tec h ni q
ues
W A RN I N G
M ai nt ena n ce- 454 ‘ / R 454A
Di sconnect t h e i nst r ument f r om
t h e power sour ce
bef or e sol der i ng .
Ci r cui t B oar d s .
U se or d i nar y 60/ 40 sol d er an d
± 35- t o
Obt ai ni ng R ep l acement P ar t s

40- wat t p enci l t y p
e sol der i ng i r on on t he ci r cui t
boar d s .
T
h
e t i p of t he i r on s h oul d b
e cl ean an d pr op er l y t i nne
d f or
St an d ar d P ar t s . Al l el ect r i cal an d
mec h ani cal par t r e-

best
h
eat
t r ansf er t o t h e sol d er j
oi nt . ‘ h i g h er wat t age
p l acement s f or
t h e 454 ‘ can b e o b t ai ne d t h r oug h
your

sol d er i ng i r on may
se p ar at e t he wi r i ng f r om t h
e base mat er -
l ocal Te k t r oni x F i el d Of f i ce or
r e p r esent at i ve . H owever ,

i al .
4- 7

Tektronix 454A Specifications

General

Brand	Tektronix
Model	454A
Category	Test Equipment
Language	English