Tektronix 7603 User manual

76
Ο 3/
R 7CO3
OSCI
LL OSCO
RE
O PER
ATO R S
Serial Nu m b er
Te k t r o
n ix,
Inc .

t Ρ . Ο . Box 500

f

B eave r ton, Oregon
97005

t

Ph o n e :
644-0161

t Ca b les : Te k
tro n ix
672
070-1310-00

WAR RAN TY
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are wa rr ante d against
d efective mate r ials and
wo rkm ans h ip fo r o n
e year .
Any
qu estions wit h r es p ect to t he wa
r ranty
s h
o
ul d be ta k en up
wit h you r T EK TR ON IX F iel d En gi n ee
r
or representative
.
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h
ou ld be
d irecte d to t h e T EK TR ON IX F iel d Office or re pr ese n tative
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service . P lease inclu d e t h e i n st ru ment Ty pe N um b e r or
Pa rt
Nu m be r an d
Se
r ial N u m be r wit h all r e q u ests for p arts or
service .
S p
ecificatio n s
and
pr ice change privileges reserv
Copyrig h t © 1972 b y Te k tronix, I nc ., B eaverto n , O r egon .
P rinted i nt he Un ited States of A m erica . All r ig h ts r eserve d .
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and foreign p atents an d
/or p
ate
n ts p en d i ng :
T EK T R ONIX is
α registe r ed tr a d ema rk of Te k tro n ix, I nc .

TABLE OF
CONTENTS
OPERATING
INSTRUCTIONS

Page
Operating
Checkout

1-3
Controls and Connectors

1-4,1-5
Simplified Operating
Instructions

1-7
General Operating Information

1-9
SPECIFICATIONS
Electrical

2-1
Environmental
and Physical

2-6
System
Specification

2-7
RACKMOUNTING
INSTRUCTIONS
Dimensional Drawing

3-5
7603/137603 Operators

7603 F eatures
T he T EK T R ON IX 7603 Oscillosco pe is α solid state, lig h t weig h t instrument desig n ed for ge n eral- pu r p ose meas u ri ng
a pp licatio n s . T h is i n st rum en t h as t hr ee p l u g-i n co mp a rt m en ts t h at acce p t T EK T R O N IX 7-series plug-in u nits to form α
com p lete m eas ur e m en t syste m . T he two p l u g-i n co mp a r t m en ts on t he left a r e conn ecte d to t he ve r tical deflectio
n
system
.
T he rig h t p l u g-i n com p artme n t is co nn ecte d to t h e h o r izo n tal d eflectio n syste m . E lectro n ic switc h i ng
between t he vertical
p l
u g-i
n
co
mp
ar tme n ts allows α multi-trace vertical d is p lay . T
he
flexi b ility of t
h
is p
l
u g-i
n feat ur e a nd t h e variety of pl u g-i n
un its availa
b
le
allow t h is system to b
e
used
for many measurement
app lications
.
1
ηa
dd itio
n , t h e i n st ru me n t con tai n s α
rea d o u t system
to pr
ovi de α
CRT
d
is p lay of al
ph
a
n
ume
r
ic informatio n
from
t
he
plug-i
n units . Data s u ch as d eflection facto r ,
sweep
rate, etc .
can
be enco d ed
and
d isplaye d
on
t h e
C
R
T .
T h is i n st r ume n t features α large-sc r ee n , 8 Χ 10 d ivision dis p lay ; eac h d ivisio n e q u als 1 .22 centimete r s . T he CR T provides
small s p ot size an d fast w r iti ng spee d . R eg u late d DC powe rs upp lies ass ur e t h at pe r formance is n ot affecte dby va r iatio n s i n
li ne voltage and f r e qu en cy, o r by chan ges in t he load du e to t h e va r yi ng p owe r r eq ui r e m en ts of t he p l u g-i n un its . M axi mum
p owe r co n s ump tio n is a b out 170 watts (60 h ertz, 115-volt li n e) .
7603/137603

General
To effectively use t h e 7603, t he o p eratio n and capa-
bilities of t h e i n st ru me n t must be kn own . T h is section
d esc r i b es t he op eration of t he
f
r o n t- and rea
r - p
an el co
n t r ols
and con n ecto r s and gives si mp lifie d
an
d
general o p
er ati
ng
i n fo r matio n .
O p erating V oltage
T h is instrument is
desig ne d for ope r ation f r om α
p owe r so urce with its
neutral at or near eart h
(ground) potential with
α se p ar ate safety-eart h
conductor
. It i s not intended for
operation
f r om two
ph
ases of α
mult ί- ph ase system, or across t h e legs of α
single-phase, t hr ee-wi r e system .
T
h e
7603
can be op erate d from eit h er α 110-volt o r α
220-volt n omi n al line-voltage source, In a dd ition, t h ree
o p erati n g ranges can be selected with in eac h nominal line
voltage source . T he voltage-selecto r ju m pe r on t he R ectifie r
b oar d (see Fig . 1-1)
allows selectio n of t h e ope r ating
voltage . To con ve r t t he instru m ent f r o m one r egulati ng
ra n ge to a n ot he r , fi r st d isconnect t he i n str u me n t f r om t he
p ower source . T hen , sli d e out t h e p owe r un it as d esc r i bed
in t he Mai n tenance sectio n . R emove t h e voltage-selecto r
ju m p e r a n d r e-i n stall it on t h e set of pins w h ic h re p rese n t
t he desire d r eg u lating ra n ge . Select α ra n ge w h ic h is
ce n tered about t he average
li
ne voltage to
w h
ic
h t he
i n st rum en t is to b e connected (see
Table 1-1) .
TA BLE 1-1
R eg u lating R ange and Fu se Data

Un g r o u nded ( L i n e)

Br own

Blac k
G
r
o und ed (
N
eu t
r al)

Bl
ue

Wh ite
Pi n s

R eg u lating R a n ge

G r o und i ng ( Ea r t h i n g)

G
r ee n-Yellow

G
r een-Yellow
Selecte d 110-volts n omi n al

220-volts n o m i n al
L O W
ME D
Hl
L i n e Fu se
REV . D, OCT . 197 6
O
PER ATI N G I N ST RU CTIO N S
PREL I M I NA R
Y
I NF O RM ATIO
N
W A RN I N G
90 to 110 volts
99 to 121 volts
108 to 132 volts
3 .2 Α slow- blow
180 to 220 volts
198 to 242 volts
218 to 262 v olts
1 .6 Α slow- blow
Sectio n 1-7603/ R 7603
O p erato r s
Powe r Co rd Co nd uctor
Identificatio n
Cond u cto r

Ι
Colo r
F ig . 1-1 . Locations
of voltage-selector ju m p er, s p are jum pe r, a nd
A L T FU SE in powe r u nit (7603
shown) .
To co
nve r t f r om 110-volts to 220-volts n ominal li n e
voltage, or vice ve r sa, r e m ove t he voltage-selector ju mper
an d replace it
with t he s p are ju m pe r (sto r e d on pi n s
a dj acen t to voltage
selector area) . T h e ju m pe r s a r e colo r -
co ded to i nd icate t he n omi n al voltage for w h ic h t h ey are
i n te nde d ; brow n fo r 110-volt nomi n al o p eratio n a nd re d
for
220-volt nomi n al o p eratio n . C hange t he li ne f u se to p rovi de
p r otection fo r t he selecte d n omi n al li ne voltage . Use t he
f u se locate d in t he A L T FU S E h ol de r on t h e R ectifier
b oar d (see Fig . 1-1) or see Table 1-1
for val
ue . Also, ch
a n ge
t he li n e-co rd p l u g to
matc h t he power-sou rce r ece p tacle or
use α suita b
le
a
dap te r .
Alte rn ate Colo r
The 7603 is d esigne d to b e use d with α t hr ee-wi r e AC
p ower system . If α t h ree- to two-wire a d apte r is u sed to
co nn ect t h is instrume n t to α two-wire AC p owe r system, be

O p er ating I n st ru ctio n s-7603/ R 7603 Ope r ato r s
s ure to co
nn
ect
t he g r o
u
n d lea d of t he a dap ter to ea rt h wit h r eal-time am p lifiers, time- b ase u n its, or com b i n atio n s
(gro und ) . F ail ure to co mp lete t h e g r o undsystem m ay allow

of t h ese . U se of s p ecial purpose p l u g-i n u nits may result i n
t he c h assis of t h is i n st rum en t to b e elevate d a b ove ground

d iffe r ent types of displays, w h ic h are d efi n ed
i
n t
h e
p otential and p ose α s hock h aza r d .

i n st ru ction m a nu als for t h ese s p ecial un its . T he followi n g
termi nology will b e use d t hr o u g h o u t t h is m a nu al .
O p erating Tem p erature
T h e 7603 can b e ope r ate d w h ere t h e a mb ie n t ai r
tem pe
r
atu
r
e is b
etwee
n 0 ° C a nd +50 ° C . T h is i nstrument
ca nbe stored i
n
ambie
n
t tem p eratures b etween -55 ° C a nd
+75 ° C . Afte r storage at tempe r at u res b eyon d t he o p er ati ng
li m its, allow t he ch assis te mp er atu r e to co m e with i n t he
op e r ati ng limits b efore p ower is a pp lied .
Th e 7603 is cooled b y con vectio n air flow t h rough t he
i n str u me n t . Com po n e n ts w h ic h r e qu i r e t he most cooli ng
are mo un te d exte r nally on α h eat r ad iato r at t h e r ear .
A dequ ate cleara n ce mu st bepr ovi d edon all si d es to allow
h eat
to
b ed
issi
p ate d fr
o m t
h
e i n st
r
u m en t . Do n ot b loc kor
r est r ict t h e
air
flow
t
h
ro ugh t
h
eh oles in t h e cabi n et or t he
h eat
r
ad iator on t h e rear
.
M aintain t he clea r a n ce pr ovi d e d
by t he feet on t heb otto m a nd allow about two i nch es
clea ra n
ce on t he to p , si d es, a nd
r
ear (more if
p
ossible) .
T he R 7603 is cooled b
y
ai
r
dr aw
n
i
n
t hr o ugh t h e ai r
filter on t he rea r p an el and b
low n
out t hr oug h t he h oles on
t he
r
ig h t side . A deq uate clea
r
an ce must bep rovi d e d at
t h ese locations . Allow at least o ne and one- h alf inc h es
clea r an
ce
beh i nd t he air filte r a nd
at
least one i nchon t h e
r ig h t si de .
Operating
P
osition
Α b ale-ty pe stan d is m o un te don t heb otto m of t h is
i n st rum en t . T h is sta nd pe r mits t h e 7603 to b e tilte d
up
a bou t 10 ° fo r m o r e conve n ie n t viewing .
Ge n eral
DIS PL AY D EF I N ITIO N S
Alternate M o de
Α time-s h ari ng met h o d of d is p layi ng two o r m o r e sig n als
wit h α si n gle cat h o d e-ray tube b eam . C ha nn el switc h i ng is
se que n tial a nd occ u rs at t he en d of each sweep .
C h opp e d
M
ode
Α time-s h
ari n g met h od of d is p layi ng two o r m o r e sig n als
wit
h
α si n
gle cat ho d e-ray tu b e b eam . C h a nn el switc h i n g is
se qu en tial an d occurs at α rate d eter m i n e d by an i n te rn al
cloc k generator (c h op p i ng rate) .
Single T r ace
Χ - Υ
ΝΟΤΕ
See
Simplified O p
e r ati n g I n st ru ctio n s in this section
fo r set-up information to obtain
eac h
of
t he followi n g
displays .
7
1
ι
ι
ι
a nd o
ne swee p .
Α d is p lay of α
single p lot p r od u ce dbyo ne vertical sig n al
Α t he rm al c u to ut i n t h is i n st ru me n t p r ovi d es the rm al

Α d
is p
lay of
two
p lots pro du ce d b y two vertical sig n als
pr otectio nand i n te rrup ts t he p owe r to the i n st rum en t if

and
o n
e sweep .
t he i n te rn al tem p eratu r e exceed s α safe o p erati n g level .
P ower is au tomatically restore d w hen t h e te mp erat u re
r
et
urn s
to
α safe level .
O p
e r atio n i n confi n ed
ar eas o
r i n

Delaye d Swee p - Si n gle Trace
close p roximity to heat-producing
i n
st ru
me
n ts may cause
t he t he r mal
c u
tout to o pen mo re fre
qu
en tly .
Α d is p lay of α single p lot pr odu ce d b yo ne vertical sig n al
a n dα d elaye d swee p . Two swee p s a r e u se d to p r o d uce t h is
d is p lay ; t he swee p s a
r
e ope
r
ati ng -
ί
t h αd
e1
α y
ίπΗ / d elaye d
relatio n s h i p w h ere one sweep (i den tified as t
hed elayi ng
sweep) d elays t h e sta rt of t h e seco nd sweep (i d e n tifie d as
t h ed elaye d swee p ) .
Delaye d Swee p - Dual Trace
R
ac
k
mo
u
nt
ί ng

Α d
is p
lay of two p lots pro
du ced by co mb i n i ng two
ve r tical sig n als and α d elaye d
swee p . Two sweep s a r e use d
I n st ru ctio n s and d ime n sional drawin gs fo r r ac k mo u nti n g

to
produce
t
h
is dis p lay ; t he sweep s a r e ope r ati ng withα
t
h
e R 7603 a r e locate d in Sectio n3 of t h e o pe
r
ato
rs
ma nu
al .

d elayi n g/ d elaye d

r elatio n s h i p .

E ac
h
vertical

sig n al

is
d is p laye
d
agai n
st t
he d elaye
d
swee p .
Α p lot of two va
r
ia b les,
n
eit h er of w h ic h re p rese n ts
T he followi n g d efi n itio n s d escri be t h e types of d isplays

ti m e . Χ r efe r s to t he h o r izo n tal
axis a
nd Υ r
efe
rs
to t h e
w h ic hcan b e o b tai ned wit h α 7603 Oscilloscope syste m ve r tical axis .
Ο
ι
ι
ι

General
PLUG-IN UN ITS

CO N T R O
L S A N DCO NNE CTO R S
T h e 7603 is designed to acce p t up to
t hr ee
T EK T R O N IX 7-se r ies p lug-in units . T h is p l
u
g-in feat
u re
allows
α variety of display com b inations an d also allows
selectio n of b andwi d t h , se n sitivity, d isplay mo d e, etc . t o
meet t h e measurement re qu
ireme n
ts
.
In a
dd ition, it allows
t h e oscillosco p e syste
m
to
b e ex pa nd edto m eet fut ur e
measu r ement re q
uirements . T he overall capa b ilities of t h e
r es
u
lta
n
t system a
r
e in large
p art determine d b y t h e
c h aracteristics of t
h e pl u g-i n selected . F or com p lete infor-
mation on p
l u g-ins availa b le for use wit h t h is instru m en t,
see t
h
ecurre
n
t
Te k tronix, Inc . catalog .
Plug-in
I n stallation
To install
αp l u g-i n unit
i nto o n e of t h e plug-in
com p a
r tme n ts, align t h e slots i n t
h eto p a nd b ottom of t
h e
plug-in wit
h
t
he associated g
u i d e rails in t h e pl u g-in
co m p artment .
Pu s h t h e plug-i nu
nit fi rm ly into t h e p l u g-i n
co mp a
r tme n t until it loc k s i n to place . To
remove α pl u g-in,
pull t h e release latc
h
on
t h e p l u g-i nto d isengage it
a n d
pull t h e u nit out of t
h e
plug-in
compartment .
P
l
u g-i n units
can be remove d or installe
d wit h o u t t urn ing
off
t
h e
i n st rum ent po w er .
It is not n ecessary t
h
at all
of t h e p l u g-i n compartments
be fille d to o p e r ate t h
e
i
n
st ru
ment
;
t h e only plug-in units
n ee de d are t h ose re q uire d fo
r
t
h e measurement to b e m ade .
Howeve r , at e n vi r onme n tal
ext r e m es, excess ra d iatio n may
b e ra d iated i n to o r out of t
h
is
instr um e n t t hr o u g h t h e ope
n
pl u g-in compa r t m e n ts .
B lan k p l u g-in p anels a r e availa b le
fro m Te k t r onix, Inc . t o
cove r t h e un u sed com p art
m e n
t ;
or der T EK T R O N IX P art No .
016-0155-00 .
W h e n t
h e
7603
is calibrate d in accorda nce wit h t
h e
cali b ratio
n pr oce dur e given in t h e service ma
nu al, t h e
v ertical and h o r izo n tal gain are stan d
ardize d . T h is allows
cali brated p l u g-i n un its to be c
h
anged
fro m one pl u g-i n
compartment to a n ot
h
e r wit
h out recalibratio n . Howeve r ,
t h e basic cali br atio
n of t h e in d ivid u al p l u g-in un its s h o u l d
b e c h eck e d w
h en
t
h ey a r e i n stalle d in t h is system to ve r
ify
t h ei r meas
u rement acc u racy . See t h e operating i
n
str
u ctio n s
sectio
n of t h e pl u g-in unit i n str u ctio n manual for verifica-
tion pr oce
dur e .
S p ecial pu r pose
p l u g-i n un its mayh ave specific rest
r ic-
tio n s r ega rd
ing
t
h e pl u g-in com pa r tments i n w h ic h t
h ey
can
b e installe d . T
h
is
i n form atio n will be given in t
h
e i
n
st ru c-
tio n m a nu al fo r t
h
ese
pl u g-in un its .
Operating
I n st ru ctio n s-7603/137603 O perators
T h e ma j
or co n t r ols fo r operation of t
he 7603 a r e located
on
t h e front p a n el of t he instrument
. F igs . 1-2 a n d 1-3
pr ovi d eαb rief
d esc r i p tio n of each co n t r ol a nd conn ecto
r .
M o r e d etaile doperating
i n form atio n is give n u n d e
r
Ge n e
r
al
O p erati n g Information .
General
O
PER ATI N G C HE C K O U T
T h e followi n g O p e
r ati ng
C
h ec k o u t p r ovides α means of
ve r ifying i n str u ment operatio
n a nd b asic cali br ation with-
out r emoving t h e covers or ma
k ing i n ter n al ad ju stments .
Si n ce it d emo n st r ates
t h euse of
all
controls andcon n ec-
to r s, it can also b e used to
pr ovi de b asic t r ai n i n g on t h e
o p e r atio n of t h is i n st ru me n t . If
r e-cali br atio n of t h e 7603
a pp ea r s to b e necessa r y, see t h e Cali
br atio n pr oce dur e i n
Sectio n 3 of t
h e Service manual . If re-calibratio n of α
p l u g-in
u nit
is
indicate d , see t he instruction
man u
al
fo r t h e
app
r op r iate pl u g-i n unit .
Set- Up
I n fo r mation
1 . Set t he fro n t- p a n el co n t r ols as follows :
I N T EN SITY Co un
te r
cloc
k wise
F OC U S

M i dr a n ge
BEAM F I N D ER

R elease
d
G R ATIC
ULE ILLUM

As d esi r ed
VER
T
M
OD
E

LEF T
T R IG SO UR
C E

VER T M OD E
P
O WER

Pu s he d in
2 .
Co
nn ect t h e 7603 to α powe r so u rce w h ic h meets
t h e
voltage a n d fre que n cy requ i r e m e n ts of t h is instr u ment . T h e
ap plied voltage s h o u l d b e n ea r t h e cente r of t h e voltage
ra n ge m ar k e d on t h e rea r pa n el (see O pe r ati n g V oltage
i n
t h is sectio n fo r i n fo rm atio n on co n verti n g t h is i n strume
n
t
from o n e o p erati n g voltage to a n ot h e r ) .
3
.I
n stall T EK T R O N IX 7A-series a m plifier un its i nto
b ot h t h e left and rig h t vertical p lug-i n co mp a r t m e n ts .
I n stall α 713-series time-base u nit i n to the h o r izo n tal
com p a r tment .
NOTE

4 .
Pull
t h e P O WER switc h
to
t ur n t h e instr u me n t on .
L
ate
r pr o d u ction of
r
ac km oun
t
oscilloscopes
a r e p r o-

Allow
several min
u
tes wa rm u p b efo r e pr ocee d i n g .
νί d e d
with
su
pp o r t p osts between t
he individual p l u g-
i n com p a
r
t
m ent& Α p ost or posts
m u
st
be remove d if
α
muldw ί d t h plug-in is to be
installe d .
To
r emove α

5 . Set b at h vertical un its fo r α d eflectio nfactor of two
p ost,
un faste n the screws that
sec ur e it at t he top a
nd

volts/ d ivisio n and cen te r t h e ve r tical p ositio n co n trols . Set
bottom
of t he plug-in housing .

bot hve r tical u n its fo r AC i nput cou p li n g .
REV C, JUL 1978

Operating I n st ru ctio n
s-7603/ R 7603 Operators

I
FUN CTIO N S O F CO
N T R O L S A N D CO NNE CTO R S
F
ro
n t P an el

L
ig h t : I nd icates t hat the p ower switc h is on a nd t
h
at
t he
i n st rum ent is conn ecte d to α li n e voltage so
u rce .
1 . I N T EN SITY-Co n t rols br ig h t n ess of t
h ed is p lay . Co n trol is
i n op erative w h en ho r izo n tal co mp a
rt m ent is vaca n t .

8 . CA L I BR ATO R -Cali br ator
output p i n j ac k s (4 V, 0 .4 V, 40
m V, gro u n d ) . P ositive-goi n g pulse o
r
DC
voltage selecte d by
2 .
RE ADO U T-T urn s on t h e r ea do u t
d is p lay an d co n t r ols the

ch an gi ng i n tern al ju m p er . R
e p etitio n rate is app r oximately one
r ea do u ti n te
n sity .

k ilo he r tz .
3 .
F
OC
U S- Provi d es a dju stme n t for op
ti mum d is p lay d efi n itio n .
4 . GR ATIC
ULE I LLUM -Co ntrols gratic u
le illumination .

LEF T : Sign als fr o m p l u g-i n un
it i n left ve r tical co mp a r tme n t
a r e d is p laye d .
5 . BEAM
F I ND ER-Wh e n pr esse d , t h e scan is
limite d to wit h i n
t heg
r atic u le a rea .

A L T : Sig n als
fr
om
plug-in un its i n b ot h t h e left a nd
r ig h t
ve r tical co mp ar t m e n ts a
r e displaye d (du al t r ace) . Dis p lay
switc h e db etwee
n vertical p l u g-i n un its afte r eac h swee p .
6 . T R IG SO UR CE
-Selects so ur ce of i n te rn al trigge
r sig n
al
fo r
t h e time base p
l
u g-i
n
in
t h e ho rizo n tal co mp a r t m e n t .

ADD : Signals fro
m plug-in un its i n bot h t h e left a
nd r ig h t
vertical co mp a rt m e
n
ts a
r e alge br aically a dd e d a nd t h e s um is
LEF T : T
he t r igge r sig n al is o b tai n e d f r om t he pl u g-i
n un it in

displayed on t
h e
C
R T .
t h e left ve r tical com
p a r t m ent o n ly .
CH O P : Sig
n
als
fro m p l u g-i n units i n b oth t h e left a
nd r ig h t
VER T M OD
E : Trigge r signal a u tomatically follows
t h e ver tical

vertical co mp a r t m en ts a
r e d is p laye d (du al t r ace) . Th ed isplay is
d is p lay exce
p t
in
C HO P a nd ADD ; t h e n t he t r igge
r sig n al is t h e

switc he d b
etween ve r tical p l u g-i n un its at appr
oximately on e
alge br aic s u
m
of
t h e sig n als f r om t he left a nd
r ig h t ver tical

m ega he r tz rate .
com pa rt m e
n
ts .
R IG H T : Sign als
f r
om
pl u g-i n un it i n r ig h t ve r tical com p a
r
t-
R IG HT : The
t r igge r sig n al is ob tai ne d f r o m t h e p
l
u g-i
nu nit in

m en t is d is p laye d .
t he r ig h t ver
tical co mp art m e n t only .
10 . Ca
m e r
a
P owe r (Not L a b ele d
) -T
h ree- p i n conn ector on C
R T
7 .
P
O
WER-

b ezel provi d es p owe
r o ut pu t (+15
V) .
R eceives r e m ote si n gle swee
p
r eset
signal fro m co mp ati b le came r a systems, a nd α g
r
o
und
pin
Switc h : Co n trols power to t h e i
n
st
rum e n t .

con n ection .
9 . VER T M OD E -Selects ver tical
mo d e of op er atio n .
F ig . 1-2 .
Front-panel co n trols a nd connectors .
ι
ι
ι

ιιιαι s ιιιιιιιι
s ιιιιιιιιιιι
ιι . ., . ss
ιιιιιιιιιιι s ιιι
ιι . . , ιιαι s ιιι s
ιιιιιιιι
ιι ~ ιιΡ ~ ι . ιι s ιιιι ss ι sιs ιιιιι
sι
IN WATTS FORT)
ι λ f
AMPS
ΙΕΕΑΧΙ

F USE

ι
AT THEY . Ν
Κτ

0
3 2Α SLOW 100- Ι Μ
RANGE SS
READY
OUT (7503P

=16ASLOW
200-24 ΟΥ RANGE
REMOTE ERASE IN 11613 7623

ALTERNATE FUSE INSIDE
131
ΥΕΡΤ S1G 0UT
ΜΑΙΝ
' Α UXILIARY 1 Υ
ΕΜΤ Ζ
AXIS IN

1

Ι L ΑΥ

+6
ΑΤΕ
O UT
ΥΙΟΥΜΑΧ ν 500 Ω
POSITIVE
SIGNA .
DECREASES INTENSITY

}SA W 7007N
THIS INST61MEN7 Ι $ CONNECTED

ΟμΤ
ι

FOR 0 υ Τ10% JUMPERS

ι
INSIDE

FREDUENCY 50 ΤΟ 400 Χε

11,ο ω
R ear P anel
1 . FU SE
-
L ine voltage
f u se for instr u me n t .
2 . S S RE ADY O U T-
Provi d es an exte r nal si
n gle swee p rea dy
i nd icato r sig n al
after th e si n gle sweep h as bee
n r eset .
3 . ΕΧΤ SS RE S
E T IN-Remote single
swee p r eset .
4 . ΕΧΤ Ζ
AXIS
IN-input
co n necto
r
for
i n te n sity mo du latio n of
t h e C R T d is play .
5 . VER T
SIG OU T- V e r tical sig
n
al
selecte dbyT R IG SO UR C
E
switc
h (LEF T, R IG H T, A LT a nd ADD) .
6 . GAT E OU T-Gate
sig n al selecte d b y gate selecto
r switc h
(MAIN, AUXILIARY,
and D EL AY) .
7 . +
SA W TOOT
HOU T- P ositive-goi ng
sawtoot h f r om time- b ase
u n it .
F ig . 1- 3 . R ea
r -pan el cont rols a nd co
nn ecto r s .
O p
erating Instr u
ctions-7603/137603 O per
ators
" ~
ω
qN
W- 1 91111111110

"INOWIRM
!
οΛΙΝ "
2 - 100
NNIF
Γ7
111111
11114 11 %

!- 1 Ε

ir"
V e
Υ ^
OW
No

O pe
r ating I n st
ru
ctio n s-7603/ R 7603 O p e r ato r s
6
.
Set t he ti m e- b ase un it fo r αswee p r ate of one

14 . Pr ess
t h e R IG H T bu tton of t h e VER T M OD
E
milliseco nd / d ivisio n i n t h e auto, i n te rn al t r igge r mo de .

switc h . R emove t he cali b rator sig n al from t he left vertical
a n d co n nect it to t h e rig h t vertical . T h e dis p lay am p lit ud e
s h o u l d be fo u r d ivisio n s wit h i n 0 .12 d ivisio n . N ote t h e
exact dis p lay amplitu
d e for t h e next ste p .
7 .
A d va n ce
t
h e I N T EN SITY co n trol un
til t
h e trace is at
t h
e
desi
r
e d
viewi n g level ( n ea r m i dr ange)
. A
dva
n ce t h e
RE ADO U T u n
til t he r
ea
d
out dis p lay is at t h e desire d
viewing level .
8 . Co nn ect t h e4 V cali br ator pin- j ac k to t h e inp ut of
t h e left vertical u nit wit h α BN C to pi n - j ac kca b le (supplie d
accesso r y) .
Graticule Illuminatio n
11 . R otate t
he
G R AT
I
LLUM control t
hr
o u ghout
its
ra nge an d n otice t h at t he illumi n atio n of t h e g r atic u le li n es
i n c r eases as t h e co n trol is tu rn ed cloc k wise ( m ost obvio u s
with tinte d filter i n stalle d ) . Set t he control so t h e graticule
li n es a r e ill um i n ate d as desired .
15 . Α co rr ect dis p lay i n b ot h ste p s 12 a nd 14 in d icates
t h at t h e 7603 Ve
r
tical Deflectio n System a n d t he ve r tical
plug-i n un its are cali
b rate d . If
t
h e
dis p lays n ote d p revio u sly
a
r
e bot h ou tside t h e given tolera n ce in t h e same di r ectio n
(i .e ., h ig h or low), t h e Ve r tical Gain o r 4 Volts cali br ato r
a dju st m
e n t pr
o
b
ab
ly n ee d
s
r e-a dj
ust m e n t . Ot h erwise, c h ec k
t h e cali b ratio n of t h e vertical plug-in u nits .
Trigge r i ng
ίι
ι
16 .
N otice t h at t he positio nco n t r ol of only t h e r ig h t
vertical u nit h as an effect on t h e positio n of t h e dis p lay .
P ositio n t h e dis p lay to t h e lower h alf of t he gratic u le . Set
Display F ocus

b ot h ve r tical u n its fo r α deflectio n facto r of two volts/
9
.
A dju st t h e FOC US co n t r ol fo r α s h arp, well- d efi n ed
divisio n . Co nn ect cali br ato r sig n al to bot h ve r tical u n its by
dis p lay ove r t h e e n ti r e t r ace le n gt h . If α pr o p e r ly foc u se d

u sing αdu al in pu t co u pler .
display cannot be ob taine d wit h t h e FOC U S cont r ol, t h e
i n te r nal Astigmatism ad ju stme n t must be re-set ; see t h e

17 . P ress t h
e
A L
T bu tton of t h e VER T M OD E switc h .
Cali br atio n sectio n of t h e Service man u al .

N otice t h at two
traces a r ed is p laye d on t h e C R T . T h e to p
trace is pr o du ce
d b y t h e left vertical u n it a nd t he b otto m
trace is prod u ce d b
y
t h e
r ig h t ve r tical un it . Set t h e swee p
r ate to 50 milliseco nd s/ d
ivisio n . N otice t h at t hed is p lay
Trace Alignment

alte rn ates betwee n t
h e left and r ig h t vertical un its after
eac h
swee p .
T
urn t h e swee p rate switc h t hr o ug h o u t its
10 . Disconnect
t he in put sig n al an d position t h e trace

r
a
n ge . N otice t h at t h e dis p lay alter n ates betwee
n
ve
r tical
wit h t h e left ve r tical un it p ositio n co n t r ol so it coi n ci d es

un its at all sweep r ates .
wit
h t h e ce n ter h o r izo n tal li n e of t h e g r aticule . If t h e trace
is not pa r allel to t h e center h orizo n tal line of t h e graticule,
see
T
r ace R otatio n a dju stme n t
procedure
i n Cali b ratio n
section of
t h e se r vice m an u al .
18 . Pr ess t he CHOP bu tto n of t h e VER T M OD E switc h .
Tur n t h e swee p r ate t hr oug h out its r a n ge . N otice t h at α
du al-trace dis p lay is prese n te d at all swee p rates, b ut u nli k e
A L Tb ot h vertical un its a r e displaye d on eachsweep i n α
time-s h a r ing m anner . R et u r n t h e sweep rate to 0 .5
m illiseco nd / d ivision .
19 . P
ress
t h e ADD
bu tto n of t h e VER T M OD E switc h .
T h e dis p lay s h o u
l d b B fou r d ivisio n s i n amplit u de . N otice
t h at t h e positio
n
co
n trol of eit h e r ve r tical un it m oves t h e
dis p lay .
R et urn t h e VER T M OD E switc h to LEF T .
ι
Vertical Deflection System

20 . Center t h ed is p lay οη t h e C R T W ί t
h
t
h e left vert ί cα 1
un it positio nco n trol . Disconnect t
h
e
i
npu t
sig n al f r o m t h e
12 . Con n ect

t he

4 V

cali br ato r sig n al to t h e i npu t

r ig h
t ve
r tical
un
it i n pu t conn ector . Seq u en tially pr ess
all
of
co
nn
ecto
r
of t h e left ve
r
tical u n it wit h t h e BN C to pi n - j ac k

t h e VER T M OD E switc h bu tto n s
.
N otice
t h
at α
sta b le
ca b le
.
Set bot hvertical un its fo
r
α deflection factor
of o ne

dis p lay is o b tai n e d in all
positio n
s of t
h e VER T M
OD
E
volt/ d
ivisio
n .

T h e dis p lay

am p lit u d e

s h o u l d

b e fou r switc h (st
r
aig h t
line i n
RIG
H T positio n ) .
divisio n s . N ote t h e exact display a mp lit
ud e fo
r
ste p 15 .
21 .
Pr ess t h e LEF T buttonof t h e T RIG SO UR C E
13 . N otice t h at t h e positio n cont r
ol of only t h e left

switc h . Again, se
que n tially press all of t h e VER T M OD E
ve r tical un it h as an effect on t h e positio n of t hed is p lay .

bu
tto ns . N otice t h at t h e dis p lay is again sta b le i n all
P ositio n t h e display to t h e u pper h alf of t he g r atic u le .

positio n s, as i n t h e previo us step .