Tektronix 7603 Operator's Manual page 14

Operati
n
g Inst
ru
ctio
n
s--7603/
R
7603 Operato r
s
Dis
p
lay
F
ocus
L
ig
h
t
F
ilter
T
h
e FOC
U
S control allows a dj
ustme
n
t fo
r b
est
d
efini- T
h
e ti
n
te
d
filter
p
rovi
d
e
d
wit
h
t
h
e 7603
m
i
n
i
m
izes lig
h
t
tio
n
of t
h
e C
R
T
d
is
p
lay. T
h
e
R
eadout i
n
te
n
sity s
h
o
u
l
d b
e reflectio
n
s f
r
o
m
t
h
e face of t
h
e C
R
T to i mpr
ove co
n
t
r
ast
t
ur
ne
d
on, w
h
e
n adj
usti n g t
h
e F oc
u s co n
trol . Slig
h
t
w h
en viewi
n
g t
h
e
d
is
p
lay
un
der
h
ig
h
ambie
n
t lig
h
t con
d
i-
r
e-a
dju
st
m
e
n
t of t
h
is control
m
ay
b
e
n
ecessary as t
h
e tio
n
s. T
h
is filter s
h
o
u
l
d b
e
r
e
m
oved for wavefo
r
m
ph
oto-
d
is
p
lay co
nd
itio
n
s c
h
a n
ge . If α
pr
o
p
e
r
ly foc
u
sed display g
r
a
ph
s o
r w h
en viewing
h
ig h w r
iti
n
g
r
ate
d
isplays. To
ca
nn
ot
b
e o
b
tai
n
e
d
wit
h
t
h
e F OC
U
S co
n
t
r
ol, t
h
e i
n
te
rn
al remove t
h
e filte
r
, loosen t
h
e two sc
r
ews on t
h e
r
ig
h
t si
d
e of
Astigmatism a
dj
ust
m
e n
t
mu
st
b
e re-set ; see t
h
e Cali
br
atio
n
t
h
e
b
ezel and remove t
h
e
b
ezel .
R
e
m
ove t
h
e tinted filter ;
section of t
h
e se
r
vice manual . leave t
h
e clea
r p
lastic face
p
late
pr
otecto r i n stalle d a nd
Gratic
u
le
re
p
lace t h
e
b
ezel . T
h
e face
p
late
p
rotector s
h
o
u
ld
b
e left i
n
place at all times to
pr
otect t
h
e C
R
T faceplate from
T
h
e gratic
u
le of t
h
e 7603 is m a
rk
ed on t
h
e i
n
side of t
h
e
sc
r
atc
h
es .
I I
face
p
late of t h
e C
R
T, ρrονίdίηg acc
u
rate, .-
meas
ur
eme
n
ts . T h
e g
r
atic
u
le is
d
ivi
d
e
d i n
to eig
h
t ve r tical
and ten
h
o r izontal
d
ivisio
n
s. Eac
h
division is 1 .22
centi
m
ete
r
s s
qu
are. 1 η
ad
ditio
n
, eac
h m
a
j
o
r d
ivisio
n
is
divi
d
e
d i n
to five
m
inor
d
ivisio
n
s. T
h
e ve
r
tical gain an
d
h
o
r
izontal timi n
g of t
h
e
p
l
u
g-i
n u
nits are cali
b
rate
d
to t h
e
g
r
atic
u
le so accurate measu
r
e
m
e
n
ts can
b e made from t
h
e
C
R
T. T h
e ill
um
i
n
ation of t
h
e g
r
atic
u
le li
n
es can
b
e varied
wit
h
t
h
e G
R
ATIC
ULE
I
LLUM
cont
r
ol .
Two ty
p
es of crt g
r
atίc
u
les
h
ave been
u
se
d
in some
Tektronix oscillosco
p
es. O
n
e g
r
atίcule
h
as 0% and
100%
r
ίsetime
r
efe
r
ence
p
oints t
h
at are sepa
r
ate
d
by
6 ve
r
tical grat ίc
u
le divisions . T
h
e ot
h
e
r
g
r
at ίc
u
le
h
as
t h e 0% an
d
100%
r
ίseti
m
e reference
p
oints separate
d
b
y 5 ve
r
tical divisions. In yo
u
r ma
nu
al, illustrations
of t
h
e c
r
t face o
r r
ίsetime measu
r
eme
n
t instructions
may not correspon
d
wit
h th
e g
r
atic
u
le ma
rk
ings on
yo
u
r oscillosco
p
e.
Fig . 1-4 s
h
ows t
h
e gratic
u
le of t
h
e 7603 and defines t
h
e
va
r
io
u
s
m
eas
ur
e
m
ent lines . T
h
e te
r
mi
n
ology
d
efi
n
e
d h
ere
will be used i n all
d
isc
u
ssions involvi
n
g g
r
aticule meas
u
re-
me
n
ts .
N
otice t
h
e 0°%o, 10%, 90% and 100%
m
a
rk
i n gs on t
h
e
left si
d
e of t
h
e g
r
atic
u
le . T
h
ese mar
k
i
n
gs a
r
e
pr
ovi d
e
d
to
facilitate rίsetime
m
easu
r
e
m
e
n
ts .
F
irst Ce
n
te
r N
i
n
t
h
vertical ve
r
tical vertical
li
n
e line
li
n
e
ΝΟΤΕ
ιοο
i
1 :
9α . . .
. . . . . . .
Ce n te r
i . .~.
h
orizontal
ι i Ι li
n
e
An o
p
tio
n
al mes
h
filter is availa
b
le fo
r u
se wit
h
t
h
e
7603 . T
h
is filte r pr
ovi
d
es s
h
ield ing against ra
d
iated EMI
(elect
r
o-
m
agnetic interfe r e
n
ce) f
r
o
m
t
h
e face of t
h
e C
R
T. It
also se
r
ves as α 1ίg
h
t filter to ma
k
e t
h
e trace mo
r
e visi
b
le
under
h
ig
h
am
b
ie
n
t lig
h
t co
n
ditions. T
h
e mes
h
filter fits i
n
place of t
h
e
p
lastic C
R
T
m
as
k
and t
h
e tinte
d
filter .
B
eam
F
inder
ι
T
h
e BEAM F I
N
D
ER
switc h pr ovi d
es α mea
n
s of locati
n
g
α display w
h
ic
h
ove
r
scans t
h
e viewing area eit
h
e
r
ve
r
tically
or
h
orizo
n
tally.
Wh
en t h
e BEAM FI
N
D
ER
switc
h
is
pr
esse
d
and h
el d , t
h
e
d
is
p
lay is co
m
p
r
esse d wit
h
i
n
t
h
e g
r
atic
u
le
a
r
ea .
R
elease t
h
e BEAM F I
N
D
ER
switc
h
to ret
u
r
n
to α
nor
m
al d
is
p
lay . To locate a
nd r
e
p
ositio
n
an oversca nn
e
d
d
isplay,
u
se t
h
e followi
n
g
pr
oce
dur
e:
3. Ad
ju
st t
h
e vertical and
h
o
r
izontal positio
n
co
n
trols
to ce n
te
r
t
h
e display a
b
out t
h
e ve
r
tical and
h
o
r
izontal
ce n te r
li
n
es of t
h
e gratic
u
le .
4.
R
elease t
h
e BEAM F I
N
D ER
switc
h
; t
h
e
d
is
p
lay
s
h
o
u
ld
r
e
m
ai
n
wit
h
i
n
t
h
e viewing area .
R
ea d out
M
o
d
es
ί
ί
T
h
e c
h
a
r
acte
r
s of t
h
e rea
d
out
d
is
p
lay a r
e w
r
itten
b
y t
h
e
ιπ . . . . Ι . . . . . . . . . . . .~ . . . . . . . .~ . . . .~ . . . . :-. . . .~ . . .
C
R
T
b
ea
m
on α ti
m
e-s
h
a
r
e
b
asis wit
h
sig n
al wavefo
rm
s. T
h
e
ο.-λ _ _
R
eadout syste
m
o
p
e
r
ates in α free ru
nn
i
n
g
m
o
d
e to
ra
nd
omly i
n
te
rrup
t t
h
e waveform
d
is
p
lay to
p
rese
n
t t
h
e
ε 131 ο-ο5
r
ea d
o
u
t c
h
a
r
acte
r
s. T h
e rea
d
out system can αι sο o
p
e
r
ate i
n
α GAT
E
T
R
IG'D mo
d
e. No
r
ea
d
o
u
t sig
n
al is
pr
od
u
ce
d
until
after t h
e swee
p h
as occ
urr
e
d .
In t
h
is
m
o
d
e t
h
e swee
p
m
u
st
F
ig. 1-4. Definitio
n
of meas
ur
e
m
e
n
t lines on 7603 gratic
u
le. run to
h
ave t
h
e rea
d
o
u
t
d
is
p
laye
d
.
REV
C,
JUL
1978
1 .
P
ress and
h
ol
d
t
h
e BEAM F IND
ER
switc
h
.
2 . I
n c r
ease t
h
e vertical a
n
d
h
o
r
izo
n
tal
d
eflectio
n
facto r s
u
n
til t
h
e ve
r
tical
d
eflectio
n
is re
d
uced to a
b
out two
d
ivisio
n
s a n
d t
h
e
h
o
r
izo
n
tal
d
eflection is re
du
ce
d
to a
b
o
u
t
fo
ur d
ivisio
n
s (t
h
e
h
orizo
n
tal
d
eflectio
n n
eeds to
b
e
r
e
d uce d
only w
h
en in t
h
e Χ-Υ mode of o
p
e r atio
n
).
ι