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 .

ι
ι
ι
ι
ι
ι
ι
ι
22 . Pr ess t h e R IG
H T buttonof t he T R IG SO UR CE 28 .
P ress and h ol d t h e BEAM
F I N
D
ER switch . N otice
switch . Se q uentially
pr ess all of t he VER T M OD E b utto n s

t h at t he d is p lay

is r et u r n ed

to
t he viewi n g ar ea in
a nd notice t hat α
sta b le d is p lay ca nn ot be ob taine d i n any

co mpr essed form . I n cr ease t h e
ve r tical and h o r izo n tal
positio n . T
h
is is
b ecau se t he r e is no i nput signal co nn ecte d
deflectio nfactors until t h e
d
is p
lay is r e d u ced to about two
to t h e rig h t
vertical un it . R et urn t he T R IG SO UR C E switc h

d
ivisions ve r tically and h
orizon tally (w hen t he h orizontal
to VER T M OD E .
R emove cali brato r signal from left

u nit is operated in t h e
time- base m o d e, c h an ge only the
ve r tical un it and
connect it to r ig h t ve r tical un it . R epeat

d eflectio n facto
r
of
t he vertical unit) . Ad j ust t h e p osition
ste p s 20 to
22 . T he t r igger signal will come f r o m r ig h t

con tr ols of t he d is playe
d ve r tical u nit and t he time- base
vertical
.
Wh
en t h e LEF T button is pressed of the T RIG

unit to cen te r t he com p resse
d d is p lay about t he center li nes
SO UR CE
switch t h ed is p lay is not stable b ecause t h ere is

of t h e graticule . R elease t
he
BEAM
F I N D ER switc h . N otice
no in pu
t signal co nn ectedto t he left vertical . R etu r n t
he

t hat t he display remai
n s wit h i n t he viewi n g a r ea .
TR IG
SO
UR CE switchto VER T M OD E .
H orizo n tal Deflectio n System
23 . P ositio n t h e start
of
t
he swee p
to
t h e left gratic u le
li n e wit h t he ti m e- base u nit p
ositio n co n t r ol .
24 . Co
nnect α 10 Χ p r obe to t he i np ut of t her ig
h t
vertical
unit . Set t he r ig h t ve r tical unit for αd eflectio n
factor of
10 volts/
d ivisio n and set t he VER T M OD E switch
to R IG
HT
.
Set t he time- b ase unit for α swee p r ate of five
milliseco nd s/
d ivisio n .
25 . Co nnect t he pro be tip to α line-voltage
so
ur
ce . T h e
d is p lay sh o u l dsh ow t h ree com p lete cycles
ove r t he 10
d ivisio n s wit h i n 0 .3 d ivisio n . Α
correct dis p lay in d icates
t h at t he 7603 H o r izo n tal Deflection System
and t h e
time-base u nit are co
rr ectly cali br ate d . If the disp lay
is outsi d e t he given tole
ra n ce, eit h e r t he 7603 o r t he
time-b ase un it n eeds to be
recali b rate d . R efe r to t he
Calibratio n sectio
nof t he Service manual, a nd to t he
time-base unit ma
nu al fo r a dju stment p roced u re .
REV Β , JUL 1978
ΝΟΤΕ
T h is step is base
d
on an
accur ate 60- H ertz line
fr e qu ency . F or ot h
er line frequencies, this procedure
will n eed to be c
h a n ged accordingly .
Z-Axis Input
Operating
1nst ru ctions-7603/
R 7603 Ope r ato rs
29 . If an
exter n al sig n al is availa
b le (five volts p eak -to-
pea k m i n
imum at two m egahe
r
tz
o r less), t h e f unction of
the ΕΧΤ Ζ AXIS
i np ut can be demo n st
r ated . Co nn ect t he
exte rn al
sig n al
to
bot h t he i npu t of t
he rig h t ve r tical u nit
a n d t he
ΕΧΤ Ζ AXIS connecto r wit
h
two BN
C ca b les and α
B NCΤ co
n nector . Set the VER T M OD E
switc hto R IG HT
and set the ve
r tical un it fo rα d eflectio n
facto r of two
volts/ d ivisio
n . Set t he time- b ase un it fo r α swee p
rate w h ic h
d is p lays seve
r
al cycles
of t he signal . Ad j ust t h e a mp
lit ude of
t h e signal ge n erato
r
un
til i n te n sity m o du latio n is visi
b le
on
t he dis p lay . T
he p ositive p ea k s of the wavefo
r
m s
h o
u
l d b e
b la
nk ed out and t he n egative pea
k
s
i nten sified . N otice t h at
t he setti n g of t h e I N T EN SITY co
n tr ol d etermines t h e
amo unt of i n te n sity m od u latio n t
h
at
is visi b le .
30 . Disco nnect
t he sig n al f r o m t he ΕΧΤ Ζ AXIS
co n nector, bu t
leave it co nnected to t he rig h t ve r tical u nit
i npu t . C hec k t h at p
ea k -to- p eaka mp lit ude of t he d is p laye
d
sig n al is four d ivisio n s
maximu m .
31 . T h is completes
t he
O p
erati ng Ch eck o u t procedu r e
for t he 7603 . Inst
rum en t o p e r ations not ex p lai ned he re, or
o p e r atio n s w h ic hn ee
d f ur t h er ex p la nation are d isc u sse d
und er General O p
erating I n fo rm atio n .
26 . Disco n nect t h e pr o b e from t
he li n e-voltage source
and th
e r ig h t vertical u nit a nd co nnect t
he probe to t h e
left
vertical un it . Set t he VER T
M
OD
E switchto LEF T

SI
MPL I F I E D O PER ATI NG
I N ST RU CTIO N S
a
nd
set
t he ti m e- b ase un it
for
α
swee p rate of 0 .5
m
illiseco
nd / d ivision .
T
he followi n g i n formatio n is pr
ovi d edto aid i n qu ic k ly
o
b tai n i n g t he co rr ect setti
ng fo r t he 7603 controls to
B eam F in d er

presen
t α d is p lay . T h e o perator s
h
oul
d b e familiar wit h t he
com p lete fun ctio n an d ope
r atio nof t h is instr u ment as
27 . Set t he d eflectio nfacto
r of the left ve r tical un it to

d esc r i b ed

elsew he
re

i n t h is sectio n befo r e u si n g t
h
is
0 .1 volt/divisio n .
N otice t h at α sq uare-wave d is p lay is not

pr oce dur e . F or
detaile dop er ating i nfo r matio nfo
r t he
visi b le, si nce
t hed eflectio n exceeds t h e scan a
r ea of t h e

p lug-i n un its, see
t h e i n st r uction ma nu als fo r t he a pp lica
b le
C R T .

un its .

O p e r ating Instr u ctions-7603/117603 O p er ato rs
Si
n gle-Tr aceDis p lay

D u al-Trace Dis p lay
T he followi ng pr oce du re will p rovide α
display of α

T
he followi ng pr oced ur e will p
r
ovide α
d is p lay of two
si n gle-trace vertical
unit agai n st o ne time- b ase u nit . For

si n gle-trace vertical un its agai
n
st o
n
e time-base
unit .
si mp licity of exp la n ation, t he vertical un it is
i n stalle d i n t he
left vertical co mp a r tment . T h e rig h t vertical com p artme
n t
can be used if t he pr oce du re is changed accordi n
gly .
5 . Co nn ect t h e sig n al to t h e i npu t co nn ecto r of t he
vertical un it .
6
.
Set t he ve r tical un it fo r AC i npu t coup li ng and
cali b rate dd eflectio n facto r s .
7 . Set t he time- b ase unit
for
auto
mo d e, i n ter n
al
t r igge r i n g at α cali b rate
d sweep
rate
of one millisecond/
d ivisio n .
8 .
A d vance t he I N T EN SITY co n t r ol un til αd is p lay is
visi b le . (If no dis p lay is visible wit h I N T EN SITY at abo u t
midran ge, pr ess and h ol d t he BEAM F I N D ER switc h an d
a
dj ust the vertical deflectio n facto r un til t he d isplay is
reduced i n size vertically ; t he n ce n te r t he co mpr esse d
d is p lay with vertical and h orizo n tal p ositio n con t r ols ;
r elease t h e BEAM F I ND ER .) A dj ust t he F OC US control for
α well- d efi ned d is p lay . A dju st R ea d o u t I N T EN SITY
for
t h e
desi r ed viewi ng level .
9 . Set t he vertical d eflectio n factor and vertical positio n
control for α dis p lay w h ic h r e m ai n s with i n t h e g r atic u le
area ve r tically .
10 . If necessary, set t h e time- b ase triggeri ng co n t r ols fo r
α sta b le d is p lay .
11 . A dju st t he ti m e-base p osition control so t h e d is p lay
b egi n s at t he left edge of t he gratic u le . Set t he time- b ase
sweep rate to d is p lay t he d esi r e d n u m be r of cycles .
1 . I n stall 7A-series ve
r tical un its in b ot h vertical plug-i n
com p artme n ts .
1 . I n stall α 7A-series ve r tical un it i n t
he left vertical
compartme n t .

2 . Pr ess t he LEF T
button of t he VER T M OD E switc h .
2 . P ress t he LEF T butto n of t h e VER T M OD E switc h .

3 . I n stall α 713-series
time- b ase un it i n t he h orizo n tal
com p artme n t .
3 . I n stall α 713-series time- b ase un it i n t he h orizontal
com p artment .

4 . Pr ess t h e VER T
M
OD
E bu tto n of t he T R IG
SO UR CE switc h .
4 . P
ress
t h e VER T M OD E bu tto n of t h e TR IG
SO
UR CE switc h .

5 . Co nn ect t he sig
n
al to t
h e i np
ut conn
ecto rs of t h e
vertical u n its .
6 . Set t he ve r tical u nits for AC i np ut co up
li n g
and
calibrate d deflectio n facto r s .
7 . Set t he time- b ase un it fo
r
au to
mode, i n ter n al
t r igge r i n g at α sweep rate of o ne milliseco nd / d ivisio
n .
ι
ι
ι
ι
ι
8 . A d vance t he I N T EN SITY control un
til α dis p lay is
visi b le . (If no d isplay is visi b le
wit h I N T EN SITY at
midr a n ge, pr ess a nd h ol d BEAM F
I N
D
ER switc h a nd a dju st
ve r tical d eflectio n facto r un til d isplay is
r
educe
d in size
ve r tically ; t hen center com p resse d d is p lay with vertical
an
d
ho r izo n tal p ositio n con trols ; release t he BEAM
F I ND ER
switc h .) Set t h e F OC US con trol fo r α well-
d
efi n ed display .
9 . Set t h e left ve r tical unit deflection
factor for α
dis p lay a bout fo u r d ivisio n s i n am p lit ude . A d ju st t he left
vertical p ositio n con trol to move t h is d is p lay to t he to p of
t he g r aticule area .
10 . Pr
ess
t he R IG
H
T
b utto n of t he VER TM OD E
switc
h .
11 . Set t he R IG H T vertical u n it d eflectio n facto
r
fo
r
α
d is p lay a b ou t fo ur divisio n s in amplitu de (if d is p lay cannot
b e locate d , u se BEAM F I N D ER switc h ) . P osition t h is
dis p lay to t h eb otto m of t he g r atic u le a r ea wit h t h e rig h t
vertical un it positio n con trol .
12 . Pr ess t h e A L T o r C HO P bu tton of t he VER T M OD E
switc h . Α d ual-t r ace d is p lay of t he sig n al f r o m t he left
ι

ι
vertical a nd r ig h t
vertical p l u g-in un its s h o u ld be p
rese n te d

NOTE
-i nform atio n on ch
oice of d ual-
on t he CR T . ( F or
-trace
mode, see V e r tical M
ode i n t h is section .)
Some 78-se r ies
time- b ase units
h ave provisions for
am p
lifier ope r ation in t h e Χ -
Υ mo d e ; see Χ - Υ
o p
eration
in
t h is section fo r
details of op er ation in
13 . If n
ecessary, adju st t h e
time- b ase t r iggeri ng controls

t h is ma
n ner .
for α sta b
le d isplay .
1 .I
n stall 7A-series am p
lifier u nits in b ot h t he
left
14 . A dju st
t he time- b ase p ositio
ncont r ol so t he dis p lay

ve
r
tical
an d t he h o r izontal com
pa rt m e n ts .
b egi ns at t
he left edge of t he gratic
u le . Set t h e ti m e- b ase
sweep rate
for t he d esire d h orizo
n tal d is p lay .
2 .
P ress t h e LEF T b utto
n of t he VER T M OD E switc h
.
Delaye d Swee
p - Single Trace
T
he followi n gp roce du re will
p rovi de α delaye
d swee p
d
is p lay of α single-trace ve
r tical un it .
1 .
Follow t h e co mp lete
proced ure give n un d er Si
n gle-
Trace
Dis p lays .
5 .
Set b ot h amplifie
r
un
its for AC i npu t co up ling a nd
cali
b rate d d eflectio n factors
.
2 .
B
e s u re t he time- b ase
u nit installe d in t h e h orizo
n tal
com
p artme n t is αd ual
time- b ase with d elayi n g/ d elaye
d
.

6 . Adva n ce
t he I N T EN SITY co n t r ol un
til α d is p lay is
ca p a b ilities
visi b le . (If no
d is p lay is visi b le, p
ress and h old BEAM
F I N D ER switc
h and a dju st t he
deflectio n facto r s of b ot h
3 . Follow t h e p roce
dure given i n t h e i n st ru ctio
n m
an
ual

amplifie
r

un
its

until

d is p lay

is

reduced

i n size

both
for t h e d ual ti m e- b
ase u n it to obtai n α d elaye
d -sweep

ve r tically and h
o r izontally ; t hen cente r com p
resse d d is p lay
d isplay .

wit h t he positio
n con t r ols ; release t
he
BEAM
F I ND ER
switc h .) A dju st
t he F OC U S con trol
for α well- d efi ned
dis p lay .
Delaye d Swee
p - Dual T r ace
G ENER A L O PER ATI
NG I NF O RM ATIO N
T h e
following p roce dur e will p rovi
de α d elayed-sweep
dis p lay of two
si n gle-trace ve r tical u nits .

Intens i ty Co n
trol
The setti ng of t h e I
NT EN SITY con trol m ay
affect t he
correct focu s of t he
dis p lay . Slig h t r e-a djustmen
t of t he
1 . Follow
t he co mp lete proced
ure given und er Dual-

F
OC
U S co n trol may b
e n ecessa r y, w hen t he i n te
n sity level
Trace Dis p
lay .

is c han ge d . To p rotect
t he CR T phospho
r ; d o not t u rn t he
I N T EN SITY con
trol h ig he rt han
n ecessa r y to p rovi d e α
satisfacto
r y
d
isplay . T he lig h t filte
rs re du ce t h e o b serve d
2 .
B
e s ur e t h e time- b ase unit
installe d in t h e h orizo n tal

lig h
t
ou
t pu t f r om t he CRT . Wh en
usi ng t h ese filters, avoi
d
com p
artment is α dual time- b ase un
it with d elayi n g/delaye
d

ad va n ci n g t he I N T EN SITY
con trol to α setti ng t
h
at
may
capabilities .

b ur n t he ph osp h or
.
Wh
en t h e h ig h est i n te n
sity d is p lay is
desired, remove t h e
filters and u se on ly t he clea
r faceplate
p rotector ( p
er
ma n
e n tly i n stalle d be h i nd b
ezel) . A p parent
3 .
F ollow t he proced ure
give n in t he i n str u ction ma
n
ual

trace i n tensity
can also b e

i mpr oved

i n

such

cases b y
fo r t he d
ual time- b ase un it to
ob tain α delaye d -swee p

r e du ci n g t he am
b ient lig h t level o
r
u si
n gα viewi ng h oo d .
d is p lay .

Also, b e ca
r
eful
t h at t he I NT EN SITY con
t r ol is n ot set too
h ig h w
h e n ch angi ng t he ti m e-base un
it sweep r ate f r om α
fast to
α slow sweep rate, o r
w
hen ch a
n gi ng to t he Χ - Υ
mode of op
e r atio n . T h e instru
m en t i n
co
r porates p rotectio n
Χ - Υ Dis p lay

ci r c u it
r y w h ic hau to m atically re
d
uces
t h e d is p lay i n te n sity
to α
lowe r level w h e n t he ti m e-
b ase
un
it is set to α slow
Th e
followi n g procedure will p rovi
de an Χ - Υ d is p lay

swee p r ate . T h is reduces
t he d anger of d amaging t h e CRT
(one signal
ve r s u s an ot h er rat he
r t h
a
n against time) .

phosph
or at t h ese slower
sweep r ates .
Ope r ati ng
I n st ru ctions-7603/137603
O pe r ato r s
3 .
Conn ect t h e Χ -sig
n al to t he am p lifie r un it
i n t he
h orizo n tal com p artme
n t .
4
.
Co
nn ect t he Υ -sig n al to t h e a mp
lifie r un it i n t he left
ve r tical com
p a r t m en t .

Operati ng Inst ru ctio n s--7603/ R 7603 Operato
rs
Dis
p lay F
ocus

L ig h tF ilter
T he F OC U S control allows a
dj ustme n t fo r b est d efini-

T he ti n te d filter p rovi dedwith
t he
7603
m i n i m izes lig h t
tio n of t h e C R T d is p lay . Th e R
eadout i n te n sity s hou l d b e

reflectio n s f r o m t h e face of t h e CRT to i
mpr ove con tr ast
t urne d on, w hen a dj usti
n
g t he
F
ocu s con
trol . Slig ht

w
h
en
viewi n g the 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 he

tio n s . T h is filter s hou l d b e r e m oved
for
wavefo
r m ph oto-
d is p lay co nd itio n s ch a
n ge . If α pr o p er ly focu se d display

g r a ph s o r w hen viewing h ig h w
r iti ng r ate d isplays . To
ca nn ot b e ob tai ne d with t
h e F
OC
US
co
n tr ol, t he i n te rn al

remove
t he filte r , loosen the two sc r ews on
the r ig h t si de of
Astigmatism a dj ust m en
t mu st b e re-set ; see t he Cali br atio n

t h eb ezel and remove t h e b ezel . R e m ove t he tinted
filter ;
section of t he 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
heb ezel . T he face p late p rotector s h o u ld b e left i n
place at all
times to pr otect t he CRT faceplate from
T h e gratic u le of
t h e 7603 is m a rked on t h e i n side of
t he

sc r atc h es .
I I
face p late of t
h e
CR
T, ρ r ονί d ίη g acc u rate,

.-
meas ur eme n ts . T
he g r atic u le is d ivi de d i n to eig h t ve
r
tical
and ten h o
r
izontal
d ivisio n s . Each division is 1 .22
centi m ete rs s qu are .1
ηad ditio n , eac h m a j o r d ivisio n is
divi de d i n to five
m inor d ivisio n s . T he ve r tical gain an d
h o r izontal timi
n g of thep l u g-i n u nits are cali b rate d to t
he
g r atic u le so accurate
measu r e m en ts can be made from
t he
C R T . T
he ill
um
i n ation of t h e g r atic u le li n es can b e varied
with t he G R ATIC ULE
I LLUM cont r ol .
Two
ty pes of crt g rat ί c u les have been u se d in some
Tektronix
oscillosco p es . O n e g r at ί cule h as 0% and
100% r ί setime r efe rence p oints t h at are sepa r ate d by
6 ve r tical
grat
ί cu le
divisions
. Th eot he r g r
at
ί cu le h
as
t
h
e 0% an d 100% r ί seti m e reference p oints separate d
by 5 ve r tical divisions . In yo u r ma nu al, illustrations
of
t he
c r t face o r r ί setime measu r eme n t instructions
may not correspon d wit h t h e g r atic u le ma rk ings on
yo u r oscillosco p e .
F ig . 1-4 sh ows
t he gratic u le of the 7603 an dd efines t he
va r io u s m eas ur e m ent
lines
.
T he te r mi n ology d efi n e d h ere
will be used i
n
all
d isc u ssions involvi ng gr 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 he
left si de of
t he g r atic u le . T h ese mar k i n gs a r epr ovi
de d to
facilitate
r ί setime m easu r e m en ts .
F irst Cen te r N i n t h
vertical ve r tical vertical
li n e

line

li
ne
ΝΟΤΕ
ιοο i

1

:
9α .. .

. .

. . . . .
Ce
n
te
r
i . .~ .
horizontal
ι

i Ι

li ne
An
o p
tio n al mes h filter is availa b le fo r u se with t he
7603 . T h is filte
r pr ovi d es s h iel d ing against ra d iated EMI
(elect r o- m agnetic interfe
r
e n
ce) fr o m t he face of t he CR T . It
also se r ves as α 1 ί g h t
filter
to
ma k e t he trace m o 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 he p lastic C R
T m as kand t he tinte d filter .
B eam F in d er
ι
Th e BEAM F I N D ER switc
h pr
ovi
d
es
α m ean s of locati ng
α display w h ic h ove r scans t h e
viewing area eit he r ve r tically
or h orizo n tally . Wh en t
he
BEAM
F I NDER switc h is pr esse d
a nd h el d , t hed 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 he
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 nan oversca
nn e d
d isplay, u se t h e followi n gpr oce dur e :
3 . Ad ju st
t he vertical and h o r izontal positio nco n trols
to ce
n te r t h e display a b out t he 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 the BEAM F I ND
ER switc h ; t hed is p lay
s h o u ld r e m ai nwith i n t he viewing area .
R ea d
out M od es
ί

ί

The c h a r acte rs of t he rea dout d is p lay ar
e w r itten b y t he
ιπ
. . . .
Ι. . . .
. . . . . . . .~ . . . . . . . .~ . . . .~ . . . . :- . . . .~ . . .
C R T b ea m on α ti m e-s h ar eb asis with sig
n al wavefo rm s . T he
ο . - λ

_

_

R eadout syste m op e r ates in α free ru nn
i ng m od e to
ra nd omly i n te rrup t t he waveform d is p
lay to p rese n t t h e
ε 131 ο - ο5

r
ea
d ou t cha r acte r s . T
he rea d out system can αι s οop e r ate i n
α GAT E T R IG'D
mo de .
No
r ea d o u t sig n al is pr od u ce d until
after the
swee p h as occ urr ed . In t h is m ode t he swee p m u st
F ig . 1-4 .
Definitio n of m eas ur e m en t lines on 7603 gratic u le .

run to
h ave t h e rea dou t d is p laye d .
REV C, JUL 1978
1 . P ress and h ol d t he BEAM F IND ER switc h .
2
. I nc r ease t h e vertical and h o r izo n tal d eflectio n facto
rs
u n
til t he ve r tical d eflectio n is re d uced to a b out
two
d ivisio n s and
t heh o r izo n tal d eflection is re du ce d to ab o ut
fo
ur d
ivisio n s (t heh orizo n tal d eflectio n n ee ds to be
r e d
uce
d
only
w hen in t h e Χ - Υ mode of op e
r
atio n ) .
ι

ι
Dis p lay Ph otograp h y
Α p er m a n ent
r eco rd of t he C R T d is p
lay
can
be ob tai ne d
w it han oscillosco pe
ca m e r a system . T
he i n structio n
manuals fo r t he
T EK T RO N IX Oscilloscope
Cameras
incl u de com p
lete i n structio n s fo r o b
taini ng waveform
ph otogra ph s . T
he following sp ecific
i nfo rm ation app lies to
t he 7603 .
ι
ι
ι
ι
ι
ι
ι
ι
T he C R T
bezel of the 7603 pr
ovides i n teg ral
m o
un
ting
fo r α T
EK T R O N IX Oscilloscope
Ca m e r a . Th e t hree pins
located on
t he left si d e of t h e C
R T b ezel co nnect p
owe r to
com p ati
b le ca m era syste m s .
It also receives
control sig n als
fr
om T
EK TR ON IX
automatic cameras to allow
came ra-
co
n t r olled si n gle-s hot p
h otog r aph y (see came
r a m anu al for
f
ur
t h er i n formatio
n ) .
V ertical M o de
L eft
and R ig h t M ode . W
he n t he LEF T or R IG
H T
bu ttonof t
he VER T M OD E
switch is p resse d ,
only
the
sig n al fr
o m t he p lug-i n un it i n t he
selecte d compart m e
n t is
d is played .
Alte rn ate
M od e . T he A LT
positio nof the VER T MOD
E
switch pro
d uces α dis p lay
w h ic h alter n ates b etwee
n
t he
p l u g-i n un
its i n t he left vertical and
rig h t vertical co m part-
me n ts wit h each
swee p of t he CRT
. Alt h o ugh t he A LT
mode can
be u sed at all
sweep rates, t h e C HO
P mo d e
p r ovides
α m o re satisfacto
r y d isplay at swee p r ates
b elow
abou t 20
milliseco nd s/divisio
n . At t hese slower
swee p r ates,
alte
rn ate-mo d e switch i ng
becomes vis u ally perceptib le
.
T he
TR IG SO UR C E
switc h allows selectio nof
t he
triggeri ng fo r an alte
r nate d is p lay . Wh en th is switc h is
set to
t h e VER T M OD E positio
n , eac h sweep is t
r
igge
r e d b y t he
signal
being dis p layed on
t he C R T . T h is provi
d es α stable
d
is p lay of two unr
elate d signals, b ut d oes not
in d icate t he
time relatio nsh ip b
etween t h e sig n als . In
eit he r t he LEF T o r
R IG H T p ositio n s of
t h e TR IG SO UR CE
switch , t he two
sig n als are d is played
s h owi ng t ru e time
r elations h ip .
H oweve r , if t he sig
n als are n ot ti m e- r elated,
t h e d is p lay
from
t he p l u g-in u nit
w h ic h is not provi d i
ng α trigger sig n al
will ap pear un sta b le
on t he CRT .
ΝΟΤΕ
Th is instrument will
not ope r ate in t h e A L T
mo d e if
t he ho r izontal plug-in
unit is not o p e
r
ate d in
t he
time-base mode .
Operating
I n st ru ctions-7603/
R7603Ope r ators
rates lower
t han about
20 m illisecon d s/ d ivisio
n , or
w h en eve
r du al-t r ace single-s
hot phen ome na
ar e to b e
dis p laye
d . At faste r
sweep rates, t he ch o pp
edswitc h i n g
becomes
apparent a nd
m ay i n terfe r e wit h t h e dis play
.
Correct i n ter n al t r igge
r ing for the C H O P mode can
b e
ob tai ne d
in any of t he
t hr ee p ositio n s of t
he T R IG
SO UR C Eswitch
. Wh en t he T
R IG SO UR CE switch
is set to
VER TMOD
E , t he i n te rn al t
r igge r sig n als from the ve
r tical
p l u g-in un its
a r e algebraically
adde d a nd t h e
time- base u nit
is t r igge r ed
from t he resulta
n t sig n al . U se of
t he LEF T o r
R IG H T t
r igger-source p ositions
t r iggge r s t h e time-
b ase un it
on t he
i n te rn al trigge r sig
n
al
from t he selecte d
vertical u nit
only . T h is
allows two ti
m e- r elate d sig n als to be
d is p laye d
sh owi ngtrue
ti m er elatio
n s h i p . H owever, if
t h e sig n als ar e
n ot
ti m e-relate d , t he display
fr o m t he c h a
nn el w h ic h is n ot
pr ovi d i n g t h e
trigge r sig n al will a pp ea
r
u
n sta b le . T he C HO P
mo de can be
use dto com p a r e two si n
gle-s h ot, tr ansient,
or
ra ndo m sig n als
w h ic h occ ur
wit h i n t he ti m e
interval
d ete rm i nedb
y t h e ti m e- b ase
un it (ten times
selected swee p
r ate) . To pr
ovid e co rr ect
t r iggeri n g, t he d is p
lay w h ic h
pr ovides
t he tr igger sig n al
mu st preced e the seco
n d d is p lay
in time . Since
t he
sig n als s h ow true ti
m
e
r elatio n s h i p ,
time-
d iffere nce m easu re m en
ts can be ma de
fr om t he
d isplay .
Alge b raic Ad d
ition . T he ADD p ositio
nof t he VER T
M
OD
Eswitch can
b e u sedto d is p lay
t he s u m or d iffe r ence
of two sig n als,
for commo n -mod e
re j ectio nto r emove an
und esi re d sig n
al, o r for DC offset (a p
plyi n gα DC voltage to
o n e cha nnn el to
offset t he DC com po n en
t of α sig n al on t
he
oth
er channel) . T he co
mm on-mode re j
ection ratio b etwee n
t he vertical p l u g-i n
com p a r tments of
t h e 7603 is greate
r
t h an 20 :1 at 50
m egah ertz . T here j ection
ratio i n creases
to
100 :1 at DC .
T he overall d
eflection facto r on t he C
R T i n t h e ADD
mo d e is t he resulta
n t of t he algeb r aic a
dd itio n of t he sig n als
from the two
vertical p l u g-i n un its .
It is diffic u lt
to
d etermi ne t
he voltage a mp lit ude of
t he r esu lta n t dis p
lay
un less t he am
p lit ude of t he signal a p
plie d to o ne of the
p l u g-i n un its
is kn ow n . T h is is p
a r tic u larly tr ue w hen
t he
ve r tical un its
are set to differe
n t d eflectio n facto
r s, since it
is n ot
ob viou s w h ic h p ortio
nof t he d is p lay is α
result of t h e
sig n al appliedto eit
he rpl u g-i n un it . Also, the
p olarity an d
r e p etitio n
r
ate
of t he app lie d signals
en ters i n to t he
calcu lation .
T he followin g ge n
er al pr eca u tio n s s houl
d be observedto
C ho pp ed

M od
e . T h e C H O P

p osition
of t he VER T

p r o vide t h e b est d is p lay
w hen u si ng t he ADD
m ode :
M OD E switc h pr
o
duces αd
is p lay w h ic
h is elect r onically
switc h e d b etwee
nc h a n nels at α one-mega
h er tz rate . In

1 . Do n ot excee
d t he i n put voltage
r ating of t he p lug-i n
ge ne ral, t he C H O
P m od ep rovi d es t
h e b est d isplay at swee p

un its .

Operating Instr u ctions-7603/117603 Operators
2 . Do not apply large
sig n als to t he p l u g-i n i np uts . Α

d isplay . Some of t he 713-series
time- b ase un its can be
good ru le to follow is
not to
apply
α signal w h ic h exceeds

ope r ated as amplifiers
i na d dition to t h eir n ormal u se as
an e qu ivalent of
abo u t eig h t times t h e vertical deflectio n time- b ase generators .
T h is feat ur e allows an exter n al sig n al
factors . F o r example, with α vertical deflectio n factor of

to p rovi d e t h e h o r izontal
deflectio n on t h e C RT . F o r most
0
.5
volt/ d ivisio n , t he voltage ap p lie d to t h at p l u g-i n u nit

of t h e time- b ase un its
wit h t h e am p lifier f un ctio n , t h e Χ
s h oul d n ot exceed 4 volts . L arger voltages
m
ay
r es u lt i n α

( h orizontal) sig n al ca
n b e
connected
eit h er to an exte rn al
d istorte d d is p lay .

i npu t con nector on t
he time- b ase un it o r it ca n be route d to
t h e time- b ase un it t hr oug
h t h e inter n al triggeri n g system
(see time- b ase instr u
ction m anu al for details) . If t he latte r
3 . To e n sure t he
greatest d ynamic range in t h e ADD

met hod is u sed, t he T R IG SOUR CE
switc h es must be set so
m od e, set t he p osition co
n trols of t he p l u g-i n un its to α

t h at t he Χ ( h o r izo n tal) signal
is ob tai n e d f r o m one of t he
setti ng w h ic h wo u l d r es u lt i nα
mid-scree n display if viewed
ve r tical un its and t he Υ (ve
r
tical)
signal is ob tai n e d f r om
i n t h e LEF T or R IG HT p
ositio n s of t h e VER T M OD E

t h e othe r ve r tical unit . T he a d
vantages of u sing t he i n ter n al
switc h .

trigger system to pr ovi
d e
t
he Χ sig n al a r e t h at t he
atten u ator switc h of t
he amplifier un it pr ovi d ing t he
h orizontal sig n al d ete
rm
i n es
t he h orizo n tal d eflection
4 . For

similar

res po n se

fr
o
m eac h channel,

set t he

factor to allow
full- ra n ge operatio n and t he plug-i n u n its d o
p l u g-i n un its fo r t h e same i nput coupli
ng .

not h ave to be
move d b etwee n co m partments w
hen
Χ -
Υ
operation
is desire d .
ί
ι
ι
ι
ι
Trigger Sou r ce
Anot h er m et h od of ob tai n i ng an
Χ - Υ d isplay is to i n stall
TR IG SOUR CE sw itc h
allows selection of t h e
T he
i n ter n al trigger sig n al
for
t
h
e
ti m e- b ase un it . F or most

an a mp lifie r p l u g-in u nit in o
ne of t he h orizo n tal plug-in
t h is switc h can
b
e
set to t he VER TM OD E
compartments (c h ec k a m p
lifier unit gai n as give n i n t he
cations, applications,
p ositio n . T h is p ositio n is t he most
convenien t, si n ce t h e

Pl
u g-in i n structio n ma nu al
to obtain calibrated h orizo n tal
internal trigger sig n al is a u
to m atically switc hed as t h e

d
eflectio n factors) . T
h
is
met ho d pr ovi d es t he best Χ - Υ
VER T M OD E switc
h
is changed
, or as t he d is p lay is

display, p a r tic u la r ly if two
i d en tical am p lifier u nits are
elect r o n ically switc h ed b etween th e
left vertical and r ig h t

used, si n ce b ot h t he Χ and
Υ i np
ut
systems will h ave t h e
ve r tical p l u g-i n un its i n t
he
A LT
position of t he VER T

same d elay time, gai
nc h a r acteristics, i npu t co up li n g, etc .
M OD E switc
h .
It
also p rovi d es αu sable trigger signal in t he

Fo
r further informatio
n on ob tai n i ng Χ - Υ d isplays, see t h
e
ADD
or
C
H
O
P p ositio n s of t h e VER T M OD E switc h , si n ce

plug-in un it m a nu als .
Also, t he refere n ce b oo k s listed und er
t he i n ter n al trigge r sig n al i n t h ese m o d es is t he algeb r aic

Applicatio n s pr
ovi d e i nformation on Χ - Υm eas u rements
s u m of t he sig n als a pp lie d to t he ve r tical p l u g-i n un its .

an d interpreti
ng
t he
r es u ltant lissa j ousdis p lays .
T h erefore, t he VER TM OD E p ositio ne n s ur es t h at t he
ti m e- b ase un it receives α trigger
sig n
al
rega rd less of t he
VER T M OD E switc
h setting, withou t t he n ee d to change

I n
te
n sity Modulation
t h e t
r
igger so u rce
selectio n .
Inte
n sity (Z-axis) m odulatio n ca
n b e u sed to relate α
t h i
r
d item
of elect r ical ph enomena to t
he ve r tical (Y-axis)
If correct triggeri
ng fo rt h e d esire d d is p lay is n ot

a
nd t he h orizo n tal (X-axis) coo rd inates
with out affecti ng
ob tai
ned
in
t he VER T M OD E p ositio n , t he LEF T or

t h e waves h a p e of t he dis p laye
d sig n al . T h e Z-axis mo du -
RIG HT positions can b e u se d to o b tai n t h e trigger sig n al

lati n g sig n al a p plied to t
he C R T ci r cu it changes t h e
f r o m eit he r t he left vertical or rig h t vertical p lug-i n u n it .

i n te n sity of t h e d is p layed
waveform to pr ovi de t h is type of
Th e i n ter n al trigger sig n al is ob tai n ed f r om t he selected

d is p lay . "Gray scale" i n te n sity
modulatio n can b e ob taine d
vertical com p artment, w h et h er t he p l u g-i n un it i n t h at

b y applyi ng sig n als
w h
ic
h d o not com p letely b la nk t he
com p art m en t is selected for d is p lay on t he CRT or n ot . If

d is p lay . L arge am p litu
de sig n als of t he correct p olarity
will
t he i n tern al t r igger signal is ob tai n ed from one of t h e

com p letely b la nk
t he display ; t he s h ar p est d isplay is
vertical
un
its, b ut t he ot he r ve r tical un it is selecte d
for

provi d ed b y sig
n
als
with α fast rise and fall . T he voltage
d is p lay, t he inter n al trigger sig n al must b e ti m e- r elate d to

a mp lit ude re qu ired
for
visi
b le trace m od u latio n d e pend s
t he d is p laye d signal i n or d er to ob tain α triggere d (sta b le)

upon t h e setti ng of t h e I
N
T
EN SITY con tr ol . A two-volt
dis
p lay .

peak -to- p ea k sig n al will com p
letely bla nk t he d is p lay even
at m axi mu m i n te n sity
levels . L owe r a m plitude sig n als can
be use d to only change
t he t r ace br ig h t n ess r at h er than
Χ - ΥO p eration

com p letely b la nk t he d
is p lay . N egative-goi ng m o du lating
sig n als increase t hed is
p
lay
i n te n sity and p ositive-goi ng
1 η some a pp
licatio n s, it is d esi r a b le to d is p lay o ne sig n al

m o du lating signals d ec
r
ease
t h e d is p lay i n te n sity . U seful
ve
r
s u s anot
h
er (X-Y)
rat h er t h a n agai n st time (i n te rn al

i npu t f r equ ency range is DC to
10 mega he r tz (i npu t voltage
sweep ) . T he flexi b ility of t he plug-in un its available for use

d erati ng necessa r y a b ove two
mega h ertz) . Th e m axim um
wit h t he 7603 p rovi d es α m eans for app lyi n g an external

i npu t voltage s h o u
l d be li m ited to 10 volts (DC p lus p ea k
sig n al to t h e h o r izo n tal deflectio n syste m fo r t h is ty p e of

AC) .
ι

Ti m e

ma rk ers

a pp lie d to

t
he

ΕΧΤ

Ζ

AXIS

i npu t

V oltage . T he cali
b rato r p rovides accurate o u t pu t voltage
conn ector p r ovide α d
i r ect ti m e r efere n ce on t he d is p lay .

of 40 millivolts,
0 .4 volt, a nd 4 volts
at t he t hree
W it h un cali br ated h
orizo n tal sweep or exter n al h o r izo n tal

fro n t- p a n el
p in- j ac k con n ecto r s into h
ig h -im p e d a n ce loads .
mo d e ope r ation, t
he ti m e ma rk ers provi d e α
mea n s of

Out pu
t resistance is approximately 50 oh
ms at t he 40 mV
r ea d ing ti m
e di r ectly f r o m t he dis p lay .
H oweve r , if t he

and
0 .4 V p i n j ac k s a nd appr
oxi m ately 450 o h ms at t h e
4 V
m a rk e r s a r e not time-relate d to t
he d is p laye d wavefo rm , α

pin jac k .
si n gle-swee p d is p lay s h o u
l d b e used (for i n ter n al swee p
only) to pr ovi de α sta b le dis
p lay .
C ur re n t . Α
40-millia m pere, o n e- k ilo he r tz ou tput c ur
re n t
is pr ovide d
w h e n t he optio n al current-loop
accessory
(T EK TR O N IX P
art No . 012-0259-00)
is conn ecte d
R aster D i s p lay

b etwee n t he
4 V p in- j ack a nd g r ou nd . T h is output can
b e
u se d to ch ec k
and cali b rate curre n t- m eas u ri ng p
robe
Α raster-ty pe d is p lay can be
use d to effectively
increase

syste m s .
t he a p parent sweep
le n gt h . For t h is ty p e of display, t
h e
t r ace is deflecte d b
ot h ve r tically an d h orizontally
b y
sawtooth signals . T h is is
acco mp lis h e d i n t he 7603
b y

W aves h ape . T
h e s qu a r e-wave o u t p ut
sig n al of t he cali-
i n stalli ng α 713-series
time- b ase unit i n one of
t h e ve r tical

b rato r can b
e
u
sed as α refe r en ce waves h a pe
w
hen
c h ec k i ng
p l u g-i n com p a r tme n ts . N ormally, t he ti m
e-base unit i n t he

or ad j usti n g theco
m pen satio n of p assive, h ig h
-resista n ce
ve r tical co m partment s h ou
l db e set to α slower sweep r ate

p r obes . Si n ce th e
sq ua r e-wave out pu t f r o m t
h
e
calibrato r
t h a n t he time- b ase unit i
n
t he
h o r izo n tal compartme nt ; t he

h as α flat to p , any
d isto r tio n i n t he dis p laye
d wavefo rm is
nu m b er of h o r izo n tal traces
in t he raster d epend s upon t he

due to t he pr o be
compensatio n . DC voltage outp ut
is also
ratio b etwee n t he
two sweep rates . I n fo rm ation can
b e

availa b le by c h anging
α ju m p er on t he cali br ator
b oar d ; see
d isplaye d on t he
r aster u sing several d iffere n t met hods .
In

Fig . 1-5 .
t h e ADD p osition
of t he VER T MOD E switc
h , t he signal
f r o m an
amplifier
un
it can b e alge br aically a dded to t
he
vertical d eflectio
n .
W
it h t h is met h od , t h e vertical
sig n al

Sig n als Out
am p litu
de
on
t he C RT s h oul d not exceed t he d
istance

Vertical Sig n al . T
h e VER T SIG OU T co
nn ector
b
etween t h eh o r izo n tal lines of the raster
. A n ot h er met h od
of dis p
laying i n fo rm atio n on t he raster is to
use t he ΕΧΤ Ζ

P
rovides α sam
p le of t he vertical d eflection
sig n al . T he
AXIS i npu t to provi d e inte n sity m odulatio
n of t he d is p lay .

so ur ce of t
he outpu t sig n al is determi n
e
d b
y
t he T
R
IG
T h is ty pe of raster d is p lay cou l d be u se d
to provi de α

SO
UR C E
switc h . T he so u rce will follow t
he setti ng of t he
televisio n -ty p e d isplay . Com p lete
i n for m atio n on operatio n
TRIG SO
UR C E switc h . Wh en
t he TR IG SOUR CE is i n t he
V
ER T MOD E t he o u t pu
t will follow t h e VER TICA L
u si
ng t h e Z-axis feature is give
nunde r I n te n sity
Modulation
.

MOD E switc h excep
t
CH O
P , t hen t he sig n als a r e ADD E D .
Modulation
.

The ou t pu t sig
n als are LEF T, A L T, ADD and R IG H T
.
T
h e
To provide α sta b le raster display, b ot
h time- b ase un its
must
b e cor r ectly triggere d . I n te rn al triggering
is not
p r ovi d ed
for t h e ti m e-base un its w hen t
hey a r e i n t he
vertical
compartme n ts ; exte rn al t r iggeri ng
must b e use d .
Also, b la nk i ng is n ot p rovi ded fro m t he
ti m e-base un its
w
hen t hey a r e installe d in α vertical
com p a r tment . To b lan k
out
t he retrace p o r tio n f r om t he time-
b ase unit i n t he
ve
r tical compa r tme n t, s p ecial conn
ectio n s m u st b e ma de
fro m t h is time- b ase un it to t h e
b la nk ing netwo rk of t he
7603 . If t h is mo d e of o p
e r atio n is desirable, con tact yo ur
local T EK T R O N IX
Fiel d Office or r e pr esentative
for
s p ecific i n fo rm ation on ob
tai n i ng b la nk i n g with t h e s p ecific
time- b ase un it
being use d i n t he ve r tical compartment
.
Calibrator
Op erating Inst ru ctio n s-7603/137603Operato
r s
Ge n eral . The i n te rn al
calibrator of t he 7603 p rovi d es α
con ve n ient signal source
fo r ch ec k i n gb asic vertical gai n a nd
fo r adju sti n g prob e com
pe n satio n as d esc r ibe d in t he p ro be

- -=~

-
i n str u ction manual
. In a dd itio n , t he cali br ato r can be used
as α con ve
n ie n t sig n al so u rce for a pp licatio n to exter
n al

Fig,
1-5 . Jump
e r
locations fo
r DC a nd one-kilohertz Cali
br ato r
eq u i p
ment .

op e r atio n (Cali br ato
r b oa rd) .

O p erating Instructions-7603/ R 7603 O p e r ato r s
outp u t sig n al i n to 50 o hm s is a
b
o u t 25 millivolts/divisio
n
of
t h e ve r tical sig n al d isplayed on systems C R T . T h e o u t pu t
sig n al i n to 1 mego hm is ab o u t 0 .5 volts/division of t h e
ve r tical sig n al d is p laye d on t h e syste m s C R T .
+ Gate . The + gate connector p rovi d es α sweep gate
sig n al t h at is ge n e r ate d by t h e ti m e b ase p l u g-i n un it . T h e
gate selecto r switc h pr ovi d es t hr ee gates MAIN,
A U XI L IA R Y and D EL AY . T h e d uratio n of t h e gate pulse
is d ete rm i n e d by t h e res p ective sweep . A uxiliary a nd Delay
gates can only be p ro duce d by d ual swee p ti m e b ase p lug-i n
un its . T h e am p lit ud e of t he gate signal is a b out 50 millivolts
into 50 o h ms o r 10 volts into 1 mego h m .
+ Sawtoot h . Th e + sawtoot hco nn ecto r pr ovi d es α p osi-
tive goi n g sa mp le of t h e sawtoot hf r o m t h e ti m e b ase
u
n it
in t h e h orizontal compartment . T h e rate of rise of t h e saw-
toot h signal is abo u t 50 millivolts/ u nit of time into 50 o h ms
o r 1
volt/u n it of ti m e i
n
to
1
mego
hm .
Un it of time is d ete
r -
mi n
e
d
by t
h
e time/ d ivision switc h of t h e h orizontal p lug-i n
unit .
T h e followi n g b oo k s d esc r i b e oscillosco p e meas u reme n t
tec hn i ques w h ic h can b e a d a p ted for use wit h t h is
instrume n t .
1-14
J . F . Gol d ing, " M easu r i n
g
Oscilloscopes", Tra
n satlantic
A r ts, I nc ., 1971 .
C h arles Η . R ot
h
Jr
., " U se of t he Oscilloscope", Α
Pr og r a mm e d text,
P re n
tice-Hall Inc
., En glewoo d Cliffs,
New J ersey, 1970 .
REP AC K AGI N G F O R S H
I
PMEN
T
ι
ι
ι
If t h e Te k t r o n ix i n st rum ent is to b e sh i pp e d to αTe k tro
n
ix
Se
r
vice Ce
n te r fo r se r vice o r r e p ai r , attac h α tag sh owi n g :
ow n e r ( ωί t ha ddr ess) a nd t h e n a m e of απ in d ivi du al at you
r
fi r m t h at can be co n tacte d , co
mp lete i n st rum ent se r ial
numb er an d α d esc r i p tio n of t
h
e se
r vice r e qu i r ed .
Save and r e- use t
h
e p
ac k age in w h ic h your i n st r ume n t was
s h i pp ed .
If
t
h
e o
r igi n al p ac k agi n g is u nfit for u se o r n ot
availa b le, r e p ac k age t h e i n st rum ent as follows :
1 . O b tai n αca r ton of co rr ugated ca rdb oa rd h
avi ng insi d e

11
A pp l i cat i ons

d i m e n sions of no less t h an six i
n
c h es
m o r
e t
h
a
n t h e
T h e 7603 Oscillosco p e a nd its associate d p l u g-i n un its

inst rum en t d i m ensio n s ; t h is will allow fo
r c u s h io n ing .
p rovi d e α very flexi b le measu r eme n t system . T h e εαρα -

R efe r to t he followi n g table fo
r ca r to n test st r e n gt h
b ilities of t h e ove r all system d epen d mai n ly upon t h e

r e
qu
i r e m ents
.
plug-in un its t h at are c h ose n fo r u se wit h t h is i n st ru me n t .
S p ecific app licatio n s fo r t h e i nd ivi du al plug-in un its are

2 .
S u r r o u n d t h e i n st
r
ument
wit h p olyet h yle n e s h eeting to
d escribed i n t h e plug-in ma n uals . T h e ove r all system ca n

p
rotect t h e finis h of t
he
inst ru
me n t .
also be u se d fo r ma n y a pp licatio n s w h ic h are not descri b e d
in d etail eit h e r in t h is m anu al or i n t h e m a nu als fo r t he
i nd ivi du al p lug-i n un its . Co n tact your local T EK T R O N IX

3 .
Cushion t h e i n st rum e n t on all si d es by tig h tly
pac
k
i n g
F ield

Office or representative for assistance in ma k i n g

d unn age o r ur et ha n e foa m b etwee n ca r to n and i
n
st
r
u-
s
p
ecific m eas ur eme n ts wit h t h is i n st ru me n t .

ment, allowing t hr ee i n c h es on all si des .
4 . Seal ca
r
ton wit
h
sh
i pp ing ta p eo r i ndu st r ial sta p le r .
SH I PP I N G CA R TO N TE STST REN GT H
J o h n D . Le nk, "Hand boo k of Oscillosco p es, T h eory, and

G
r oss W eig h t (l b )

Carto n Test
Strengt h (l b )
A pp licatio n ", Pr entice-Hall Inc ., En glewoo d Cliffs, New
J
ersey, 1968 .

0-10

200
10-30

275
30-120

375
J .
Czec h , "Oscilloscope M easuring Tec hn i q ues",

120-140

500
S p
ringer- V erl α g, New Yo rk , 1965 .

140-160

600
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REV . Β , OCT
. 1976

Many of t he m eas ur ement capabilities
of t h is
T h is i n str u me n t will meet
t he followi n g electrical s p ecifi-

instr um ent are d ete r mine
d by t he choice of plug-in
cations after com p lete
cali br ation as given i n Sectio n 5 . T he

un its . T h e following ch ar
acte r istics a pp ly to t he 7603
O pe
r ati
ng C h ec kout p
roce du re w h ic h is given i n Sectio
n 1

Oscilloscope on
ly . See t h e System Specification at
p rovi d es αcon venie nt
m et ho d of check ing i n str um en t

th e en d of this
section for specifications of t he
p erforma
n
ce with
o u t m a k i ng inter n al ch ec k s o r a dju st-

complete syste m .
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Information give n in t h is ma nu al a pp lies to t he R 7603
Oscillosco p e also, unless ot h erwise i nd icate d . T he R 7603 is
electrically i d entical to t he 7603, but it is ada p te d fo r
m o u nti ng i nα sta nd a rd 19-inc h rac k . R ack mou n ting
instructio n
s a
nd α d ime n sio n al dr awing fo r t he R 7603 are
given in Section 3 .
Deflectio n F actor
B etween Com p artme n ts
L ow Fre qu ency L i n earity
B an
d wid t h
Ste p R es p o n se R iseti m e
Isolatio
n betwee n V e r tical
Com p artments
Delay L i
ne
C ho pp e d M od e
Rep etitio
n
R ate
Ο
i
C h aracte r istic
S PE CI F ICATIO N
VER TICA L D EFLE CTIO N SYST
EM
W it h i n 1% .
P erformance R e quiremen ts

Ι

Su pp le m ental I n formatio n
Compati b le wit h all 7000-series p
l u
g-i
n
u nits .
0 .1 division o r less co
m
p
r
essio
n
or
ex p an sio n of α ce n ter-screen 2d ivisio n
sig n al w hen positioned a n yw h ere
vertically with i n t he g r atic u le a r ea .
See system s p ecificatio
n
s fo
r
7000-se
r
ies
i n st r u m en ts .
See
system
s p ecificatio n s fo r 7000-se r ies
i n
st
r
u
m e n ts .
At least 100 :1 f r omDC to 10O MHz .
1 MHz wit h i n 20% .
Sectio n
2-7603/ R 7603 Ope rator s
me n ts . Th
e followi n g electrical c h aracte r istics
a p
ply over an
am
b ie n t temperatu re r a n ge of 0 ° C to +50 ° C, exce p
t as
oth
erwise i nd icate d . W a r m up time for give
n acc ur acy is 20
mi
n utes .
ΝΟΤΕ
P ermits viewi ng leading
edge of trigger
sig n al .

Specificatio n -7603/ R 7603 Operato
rs
Ti m e
Segment Fro m E ach
Com pa
r t m en t
Difference In
Delay Betwee n
Vertical
Compartme n ts
V ertical Dis p
lay M od es
T r igge r So urce
Deflectio
n F actor
2-2
C h ar acte r istic
C ha r acte r istic
C ha r acte r istic
Fastest Cali b rated Swee p
R ate
Low Fr e qu e n cy Li
n earity
Ph ase Sh ift Betwee
n T he Vertical
and H o r izo n tal A
mp lifiers
Fre qu ency R es po
n se Ba nd widt h
(8 d iv R efere n
ce)
VER TICA L D EFLE CTIO N SYST EM
(con t)
0 .4 to 0 .6 μ
s .
H O R IZO N TA L D EFLE CTIO N SYST
EM
5n s/ d iv .
P
erformance
R e q ui r eme n ts
T R IGG ER I NG
Perfo rm
an
ce
Req u i r ements
P erformance Re qu i r eme n ts
Co m pati b le with all 7000-series
pl u g-i n
un its .
0 .1 div o r less com p ressio nor ex p an
sio n
of α ce n ter-scree n2 div
sig n
al
w hen
positio ned anyw he r eho r izontally
with i n
t he gratic u le a r ea .
Less t han2° f r om DC to 35
kH z .
At least 2 MH
z .
0 .5 n s or less .
Su pp
le m e n tal
Information
LEF
T : Left ve r tical u nit only .

Selected by VER T
M
OD
E switc h .
A L T : D u al trace, alternate betwee
n ve r-
tical units .
ADD :
Ad de d alge br aically .
C HO
P : D u al t r ace, c h o p ped betwee
n ve r -
tical
un its .
R IG
H T : R ig h t ve r tical un it only .
Sup plemental Information
S u pp lemental I nfo r matio n
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LEF T VER T :
Fr om left vertical o n ly .

Selecte d b y T R IGG ER SO URC E switc
h .
VER T M OD E :
Dete rm i n e d b y vertical
mo de .
R
IG
HT VER T : Fr o m r ig h t vertical only .
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