Tektronix 576 - Page 119

Pe r formance C h ec k /Cali b ration-Ty pe 576
MMM081 .
Mom
MEMMIMMOMM
110 W ~
"" _
5
V
Τ 6 ρ
100
Fi g . 5-7 . T ype
576 d i splay o f wave f orm f or ma k ing ad j u stment o f
ho r i z ontal com p ensation .
c . P osition
t
he d is p lay onto
t h
e CR
T (see F
ig . 5-7)
.
d . C HE C K F O R -Tail
on
t he upp er p ortion of t h e dis-
play p arallel wit h t he vertical graticule
lines
(see
F ig .
5-7)
.
e .
AD JU
ST-C433, H
O
R IZ CO M P a d j ustment ; on t he
H O R IZ VO L TS/DI V circuit board (see
F
ig . 5-9)
if
t he
display is not vertical .
5- 1 2
f . (If
d oing A d j ust steps only, go to
ste p 21 .)
g . Set t
he following
Ty p
e
576 cont
r ols
to :
VER TICA L
DIS PL AY O FF S
E
T Selector
H O R IZO N TA L
POLARITY
P OSITIO
N ( V ertical
and
H orizo n tal)
h . Set t h e followi ng Calibration
F unction
Dis p lay Offset Mu lti p lier
Calibration R ange
.5A
N O RM (O
FF )
2 V CO LLE CTO R
AC
Centere d
F ixture controls to :
Step Gen
0
200 m V
15 . C
h
ec
k H orizontal
an d
V ertical P ositioning
α . Turn t h e h orizontal F I NE P OSITIO N control
t hr oug h out its r ange .
b .
C
HE
CK F
O
R
-S p ot
moving
at
least +2 .5 d ivisions
h orizontally about t he center vertical graticule line (see F ig .
5-5) .
c . Turn t he vertical F I NE P OSITIO N control t h roug h -
out its range
d . C HE CK F O R -S p ot moving at least +2 .5 d ivisions
ve r tically about t he center h orizontal graticule li n
e .
e . P ress Ty p e 576 Z ER O button and center t h
e
s p ot on
t h e graticule using t he F I NE P OSITIO N controls .
f . Set t he Type 576 P O L A R ITY switc h to
+(
ΝΡΝ ) .
g . If t he spot is not locate d at t he intersection of t he
zero h orizontal an d vertical graticule lines (see F ig . 5-5),
p r ess t h e Ty pe 576 Z ER O button and re-position t h e s p ot
using t h e F I NE P OSITIO N cont r ols .
h . Switch h orizontal P OSITIO N switc h to both cloc k -
wise p ositions .
i . C HE CK F O R -S p ot moving 5 divisions to t h e rig h t
+0 .1 d ivision eac h ti m e t he switc h is switc hed o ne p osition .
j . Switch vertical P OSITIO N switc h to both cloc k wise
p ositions .
k . C HE C K F O R -S p ot moving up 5 divisions ±0 .1 d ivi-
sions eac h time t he switc h is switc hed one p osition .
Ι . Set t h e following Type 576 controls to :
P OSITIO N ( V ertical

Centere d
and H orizontal)
POLARITY

-(PNP)
m . If t he s p ot
is not locate d at t h e intersection of t h e
tent h h orizontal
an d vertical graticule lines (see F ig . 5-5),
p ress t h
e
Ty p
e 576 Z ER O bu tton and re- p ositio n t he s p ot
u sing t h
e
F I NE
P
OSITIO N co
n trols .
η . Switc h h orizo n tal
P OSITIO N switc h to both coun ter-
cloc k wise
p
ositions
.
ο . C HE C K F O R -S p ot moving 5 d ivisions to t h e left
+0
.1
d
ivision each time t he switc h is switc h ed one position .
ρ . Switch ve r tical
P
OSITIO N switc
h
to bot
h
co
u nter-
cloc k wise p ositions
.
q . C HE CK F OR -S p ot moving 5 d ivisions d own +0 .1
d ivision eac h time t he switc h is switc he d one positio n .
16 . C h ec k Z ER O, CA L an d DIS
PL
AY
I
NVER
T
B uttons
α . R eset t he Type 576 P OSITIO N switc h es to t h eir cen-
ter positions .
b . Pr ess t he Ty p
e
576
Z
ER O b
u
tton an d
ch ec
k t
h
at t
he
s p ot is still locate d at t
h e
intersection of t
he
tent
h h
orizon-
tal and vertical graticule lines .
c . R elease t he Ty p e 576 Z ER O button and p ress t h e
CA L button .
d . C HE C K F O R -S p ot locate d at t
h e
intersection of t
h e
zero h orizontal an d vertical
graticule lines
±0 .15 d
ivision
h orizontally and
vertically .