Tektronix 453A User manual

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
1 Ν ST
RU CT
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
ΜΑΝ
UAL
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Se
r ial Num ber
Te k tro n ix, Inc . 0

Ρ .
Ο
.
Box500

0

B eaverto n , Oregon 97005

"

Phone : [phone]

"

Cables : Te
k tronix
070-1089-00
171

.WARRANTY -
ΑΙΙ Tektronix J nstru
m e
n ts
are : warrante d agai n st .
d efective
m
aterials
and wo r k manship f
or one y ea r .
Any ' . q uestions

w
it
h
respect, to

t h e -
wa
r rant
y ,
m entio n e
d abo
v e,
sh o u l d - pe 'taken up wit h
yo u
r
Te k tronix Field'
Engineer or re p resentati v e .
All req u ests f or
repairq and
.
replacement parts
sh o u l d be directed to t he
Tektronix
F
ie
l
d Office or
r e p
resentati v
e
in Your area_ T h is
procedu r e will ass u re
you' the fastest possible
'service . Please include
the
i n str u ment Type ( π r
Par t Num b ery
and
Serial or
Model Num ber with all
requests for p a r ts or Se r
vice :
Specifications and
p rice cha n ge privileges reserved .
Copyright
© 1971 by Tek tronix,
Inc ., B ea ve r to n ,
Oregon .
P rinte d
in t h e U nite d
States of Am erica .
All
ri ghts reserved
. Contents of this
publication may not
be r e p r od
uced i n any form wit hout
permission of t h e
copyrig
h t owner
.
U .S .A .
:and foreig n
Tekt r on ix prod
ucts covere d
y U .S .
and fo r e i gn p atents,
and/or p atents p
ending .

ι
1

TA BLE
O F CO N T EN TS
S E CTIO N 1

453 Α / R 453A S PE CI F ICATIO N S

P age

S E CTIO N 2

O PER ATI N G I N ST RU CTIO N S (cont)
Introd uction

1-1

I n p ut
Co
u pli n g

2-17
Table 1-1 E lectrical

1-1

Deflectio n F
actor

2-17
V ertical Deflection Syste m 1-1

D u al-Trace
O p
eratio n
2-17
Triggeri n g ( Α a nd Β Sweep)

1-3

Channel
1 O u tpu t an d Cascade d
H orizontal Deflectio n System

1-4

O p eratio n 2-18
Calibrator

1-6

Algebraic A d ditio n 2-19
Ζ Axis Input

1-7

Trigger Source

2-19
O u t pu t Signals

1-7

Trigger
Co up li ng

2-20
Dis play

1-8

Trigger Slope

2-21
P ower S upp ly

1-8

Trigger L evel

2-21
Table 1-2 E nviro n mental C h aracteristics

1-9
H ig h - F re qu ency Sta b ility

2-21
Table 1-3 Ph ysical

1-9

Α Swee p Triggere d L ig h t

2-21
Sta nd ar d Accessories

1-10
Α Swee p M ode

2-21
Horizontal Sweep R ate

2-23
Swee p M ag n ificatio n
2-23
M ixed an d Delaye d Sweep

2-24
Χ - Υ Operation

2-27
S E CTIO N 2

O PER ATI N
G I
N
ST RU CTIO NS

Α an dΒ Gate

2-27
Intensity M
od ulatio n 2-27
Calibrator

2-27
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Ge n eral

2_1
F ront Cover

2_7

A pp
lications
Operati n g V oltage

2_1

Ge
n
eral

2-20
O p erating Temperat u re

2-2

P ea k to P ea k V oltage
O p er ati ng P ositio n
2-2

M eas u reme n ts-AC

2-28
R ac
k mo un ti ng

2-2

I n stantaneo u s V oltage
Co n trols
an d Conn ectors

2-3

M easu rements-DC

2-29
First-Time
O p eration

2-7

Comparison M eas u reme n ts

2-30
Test
Set-up C
h
art

2-11

Time-D u ratio n M eas u reme n ts

2-31
General O p erati ng
Informatio n
Determining F re quen cy

2-32
Si mp lifie d
O p
erati
ng I n formation

2-11

R isetime M easu reme n ts

2-32
I ntensity Control

2-14

Time-Differe n ce M eas u rements

2-33
Astigmatism A d ju stme nt

2-14

Delaye d Swee p Time M easurements

2-34
Graticule

2-14

Delaye d Swee p M agnificatio n 2-35
Trace Alignme nt A dju
stment

2-15
L ig ht F ilter

2_15 Displaye
d Com
p
lex Sig
n
als
B eam F i n d er

2-15

U si
n g
Delaye d Swee p 2-36
V ertical
C
ha nn
el Selectio n
2-15

Pulse
J
itter M eas u rements

2-37
V ertical
Gai
n
A d ju stme n t

2-15

Delaye d Trigger Generator

2-38
Ste p Atte nu
ator B alance

2-16
N ormal Trigger Generator

2-39
Signal Co n
nections

2-16

Mu
lti-Trace
Ph ase Differe n ce
L oa d i n gEffect of t
h e

M easureme n
ts

2-39
Type 453 Α / R
453A

2-16

H ig h R esol u tio n
Ph ase M eas u rements

2-40
Coaxial Ca b le Consi
d erations

2-16

Χ - Υ Ph ase M easu reme n
ts

2-40
Ground Consideratio
ns

2-17

Co m mo n - M odeRe j ectio n
2-42

CO N T EN
TS (co n t)
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S E CTIO N 3 CI RC U IT D E SC R I P TIO N

S E CTIO N 5 CA L I BR ATIO N
I n trod u ction

3-1

Intro du ction

5-1
Block Diag r a m 3-1

Te k tro n ix Fiel d Service

5-1
Circ u it O p eration

3-3

U si n g T h is Proce du re

5-1
C h a nn el 1 V ertical P reamp

3-4

Test Eq u ipme n t R e qu ire d 5-1
C h an n el 2 Vertical P reamp 3-6

P relimi n ary Control Settings

5-3
V ertical Switc h ing

3-7

P
art 1-P e r forma n ce C
h
ec
k
V ertical O u t p ut Am p
lifier

3-9

Intro d
u ctio n 5-4
Trigger P rea mp 3-10

In d
ex to Part Ι - P erforma n ce C h ec k 5-4
Α
Trigger
Generator

3-12
Α Swee p Generato r 3-16

P relimi n ary Proce du re for
P erformance C h ec k 5-5
Β Trigge r Ge n erator

3-19
Β Sweep
Generator

3-21

Part I[-Adjustment
Horizo n tal Am p lifier

3-23

Intro d u ction

5-26

'
2 Axis Amplifier

3-2 ς

Ind ex to P art II-Adjustment

5-26
C R T Circ u it

3-27

P
reliminary
P roced
ure for
L ow- V oltage P ower S u pp ly

3-28

Ad ju stme n t

5-26
Voltage Distrib u tio n 3-31
Calibrator

3-31
S E CTIO N 6 RAC
KM
O
UN TI NG
S E CTIO N 4 M AI NT EN A N C E
I n tro du ction

6-1
I n str u me n t Di m ensio n s

6-1
I n tro du ctio n
4-1

R ac k Di m en sio n s

6-1
Cover R emoval

4-1

Sli d e-O u t Track s

6-1
M o u nti ng P roce d u re

6-1
Preventive M aintenance

Alter n ative R ear M oun ti ng M et hods

6-2
General

4-1

R emovi n g or I n stalling t h e I n str um en t

6-3
Sli d e-O u t Trac k Lub ricatio n 6-3
Cleaning

4-1
Lu brication

4-2
Visual Ins p ection

4-2
Tra n sistor C h ec k s

4-2

S E CTIO N 7

ELE CT R ICA L P A R TS L IST
R ecali b ration

4-2

-
A b breviatio
ns a n
d Sy
m
bols
Tro
u
bles
h ooting

P
arts Or d
eri ng
I
n for m atio n
Intro
du ction

4-2

I n dex of Electrical P arts
L ist
Trou bles h ooti n g Ai d s

4-2

Electrical Parts L ist
Tro ub les
h
ooting Equ i p ment

4-4
Trou b les
h
ooting Tec hn iq u es

4-4
Corrective M ai n te n a n ce

S E CTIO N 8

DIAG RA M S A N D CI RC U IT B OA
RD
Ge n eral

4-7

ILLUSTRATIONS
O b tai n ing R eplacement Parts

4-7
Sol d ering Tec h ni q u es

4-7

Sym b ols a nd R eference Desig
n ators

8-1
Com p o n e n t R ep lacement

4-10

Voltage a n d W avefor m Test Con d
itio n s

8-2
R ecalibratio n After R epair

4-13

Diagrams
I n str um ent R epack agi n g

4-13

Circ u it Board
Ill u strations
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S
E CTIO N
9

ME CH A NICA L P A R TS L IST

CH A N G E
INF O RM ATIO N
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CO N T EN TS (co n t)
453 Α / R 453A
M ec
ha n
ical P arts L ist I n formation

A bb reviations
an d symbols u se d in t h is man u al are b ase d on or
Index of M ec h anical P arts L ist
ta ken d irectly from IEEE
Sta nd ar d 260 "Sta n d ar d Sym b ols for
an d Ill u stratio n s

Un its",
MIL-STD-12B a n d ot h er sta nd ar d s of t h e electronics
i ndu stry .
C
h
ange i n for m atio n , if any, is locate d at t h e rear of
M ec h a n ical P arts L
ist

t h is ma n ual .

453 Α / R 453A
F ig . 1-1 . Top ; t he 453 Α
Oscillosco p e .
B
ottom ; t h e R 453A Oscillosco p e .

S
E
CTIO
N l
453AIR4S3A SPECIFICATION
C hange information, if any, affecting this
section will
be
found
at the
rear of
this manual
.
453 Α / R 453A
Intro
d
uct
i
on

switc h set to Χ -Y) . T h e regulate d DC p ower su pp lies main-
T h e Te k tronix 453 Α Oscillosco pe is α transistorized

tain constant out put over α wi de variation of line voltages
p ortable oscillosco p edesignedto o p erate in α wide range of

and
fre quencies . Total p ower consum p tion of t h e instru-
environmental con d itions . T he
lig h
t weig h
t
of
t he 453 Α

ment
is app roximately
90 watts .
allows it to be easily trans
p
orte
d , w h ile p rovi d ing t h e per-
formance necessary for accurate h
ig h -fre q uency meas u re
ments . T he du al-c hannel DC-to-60 MH z vertical system pro-

Informatio n give n i n t h is instruction manual ap p lies to
vides cali b rate d d eflection factors from 5 millivolts to 10

the
R453A also
unless ot
herwise
noted . T he R453A is
volts/ d ivision . C hannels 1 and 2 can be cascadedusing an

electrically identical to t h e 453 Α , but is mec h anically
external cable to provide α one millivolt minimum deflec-

ada p ted for mounting in α stan d ar d 19-inc h rac k . Rac k -
tion factor (
both VO L
TS/DI
V switc h es set to 5 mV ) .

Mounting i n structions and α d imensional d rawing for t he
R453A are p rovi ded in Section 6 of t h is man u al .
T he trigger circuits p rovi
de stable triggering over t h e full
range of vertical fre q uency res p onse . Se parate trigger con-
trols are provi de d to select t h e desired triggeri ng for t h e Α
and Β sweeps . One of t h ree sweep modes can be selecte d

T
h is instrument will meet
t
he
electrical c h aracteristics
for t h e Α swee p ; automatic, normal, or si n gle swee p . T h e

liste d in Table 1-1 following com p lete calibration as given
horizon tal swee p p rovides α maximum swee p rate of 0 .1

in Section 5 . T he p erformance c heck procedure i n Section
microseco
n
d/division (10 nan oseconds/ d ivisio
n
usi n g 10 Χ

5p rovides α convenient met hodof check ing instrument
magnifier) along with α d elaye d sweep feat u re for accurate

p erforma nce with out ma k i n g inter n al c heck s or ad j ust-
relative-time measurements . Accurate
Χ -
Υ
measurements

ments . T he following electrical c h aracteristics apply over α
can be ma d e with C hannel 2 p rovi d ing t he vertical deflec-

calibration interval of 1000 hou rs andan am b ient temper-
tion, and C hannel 1 provi d ing t h e horizon tal d eflection

ature range of 0° C to +50 °C, exce p t as oth erwise in d icated .
( ΙΝΤT R IG switc h set to CH 1 O R Χ -Y, H O R IZ DIS PL AY

Warm up time for given
accuracy is 20
minutes
.
Deflection Factor
Deflection Accuracy
Variab le Deflection Factor

Ι Continuo u sly varia b le b etwee n cali- Ι E
xten
d s
maximum d eflection factor to
b rate d settings .

at least 25 volts/ d ivision .
TA BLE
1-1
ELE CT RICA L
C h aracteristic

P erformance Req uirement

Su p
plemental Information
VER TICA L D EFLE CTIO N
SYST EM
5 millivolts/ d ivision to
10 volts/ d ivi-

Selected by V O L TS/DI V switch .
sion in 11 cali b rate d ste p s for each Ste p s in 1-2-5 se
quence .
c h annel . L ess t h an one millivolt/ d ivi-
sion
w
h en C hannel 1 and2 are cas-
cad e d .
Wit h in 3% of in d icate d d eflection . Wit
h GAIN correctly ad j usted at 20
Casca ded
deflectio n factor u ncali- m V and VA R VO L
TS/DI
V
control set
b rate d .

to cali b rate d .

Specification-453
Α / R453A
10 mV/DIV
5 mV/DIV
Without probe
Ca pacitance
Cha r acteristic
B a n d wi d t hat -3 dB p oints (with
or
without Ρ 6061 Probe)
20 mV to 10 VOLTS/DIV
Channels 1 an d2 cascaded
AC L ow-Fre q uency Response (lower
-3 dB point)
With Ρ 6061 P robe
In p ut RC Characteristics
Resistance
M aximum Safe In put Voltage
In put Cou p ling
M
o d es
Vertical Disp lay M od es
Cho pp e d Re p etition Rate
Am p
lifier Crosstalk
CommonM ode Rejection
Ratio
(all deflection factors)
Polarity Inversion
Signal
Delay L ine
DC to at least 60 megahertz
DC to at least 50 megahertz
DC to at least 40 megahertz
DC to at least 25 megahertz
1
.6
h ertz or less at
all
d
eflection
factors .
0 .16 h ertz or less at all d eflection
factors .
AC
or
DC
.
TA BLE 1-1 (cont)
P erformance R equirement
Channel 1 only .
Channel 2 only .
Dual-trace, alternate between channels .
Dual-trace, cho pp e d b etween channels .
A dded algebraically .
A pp roximately 500 kilohertz .
100 :1 or greater, DC to 20 megahertz .
At least 20 :1 DC to one kilohertz for
signals less than eight times the
VOLTS/DIV switch setting .
Dis p laye
d signal from Channel 2 can
b
e
inverted .
Permits viewing of lea d ing e dge of
triggering signal (internal triggering
only) .
Su pp lemental
Information
Driven from 25-o
h m source . V A R
V OLTS/DIV control
set to calibrated
p osition .
In p ut Cou p ling switch set to AC .
One megohm ±2%
A pp roximately 20 p
icofara d
s
600 volts DC
+p
eak AC (one kilohertz
or less) .
Selected
by In
p ut
Coupling switch .

Sou rce
Co u p ling
P olarity
Internal Trigger
Sensitivity
AC
LF REJ
H FREJ
DC
E xternal Trigger Sensitivity
AC
LF REJ
HF REJ
DC
C h aracteristic
TA BLE 1-1 (cont)
P erformance R e q uirement

Sup p lemental Information
T R IGG ER I N G ( Α A N D Β S
WEEP)
Internal from d is p laye d channel or

Selecte d by SO UR C
E
switc h .
from C h annel 1 only .
Internal from AC p ower source .
E xternal .
E xternal d ivi
d
eby
10 .
AC
AC low-frequency re j ect
AC h ig h -fre q u ency re j ect
DC
Swee p ca n be triggered from p ositive-

Selecte d by SLO PE switc h
going or negative-going portion of
trigger signal .
0 .3
d ivision of d eflection, minimum,
30 h ertz to 10 mega h ertz ; increasing
to 1 .5 d ivision at 60mega
h ertz .
0 .3
d ivision of d eflection, minim u m,
30 kilo h ertz to 10 mega h ertz ; in-
creasing to 1 .5 division at 60 mega-
h ertz .
0 .3 d ivision of d eflection, minimum,
30 h ertz to 50 kilo h ertz .
0 .3 d ivision of d eflection, minimum,
DC to 10 mega h ertz ; increasing to
1 .5
d ivision at 60mega
h
ertz .
50 millivolts, minimum, 30 h ertz to 10

SO UR C E switc h set to EXT . Triggering
mega h ertz ; increasing to 200 millivolts

signal

re qu irements increase d 10 times
at 60 mega h ertz .

for ΕΧΤ
-
10 p osition .
50 millivolts, minimum,30 kilo h ertz
to 10 mega h ertz ; increasing to 200
millivolts
at 60 mega
h
ertz
.
50 millivolts, minimum,30 hertz to
50 kilo h ertz .
50 millivolts, minimum, DC to 10
mega h ertz ; increasing to 200
millivolts
at 60mega
h
ertz
.
Specification-453 Α / R 453A
Selecte d by
CO
UPL I NG switch .

S
p
ecification-453 Α / R 453A
Auto
Triggering ( Α swee ponly)
Single Swee p ( Α Swee ponly)
Display Jitter
E xtern al Trigger In put
RC C h aracteristics
Ch
aracteristic
LEVEL co n trol range
ΕΧΤ
ΕΧΤ = 10
M aximum safe in pu t voltage
Swee
p R ates
Α sweep ( delaying
swee p )
Β swee p ( d elayed swee p )
Swee
p Acc uracy
Over center eig h t d ivisions
5 s/DI V to 0 .1 s/DI V
50 ms/DI V to 0 .1 μ s/DI V
Swee p
L inearity
Over any two d ivision p ortion with -
in cente r eig h t d ivisions (all
sweep
rates)
TA
BLE
1-1 (cont)
P
erformance R e q uirement
Stab le d is p lay
presente
dwith
signal
am p lit ud es given un d er Internal and
E xternal Trigger Sensitivity above 20
h ertz . P resents α free-r u nning swee p
for lower fre
quencies or in abse nce of
trigger signal .
Α Swee p Generator p ro duces only one
swee p w h en triggere d . Fu rt h er swee p s
are loc ked out until RE SE T button
is p resse d . Trigger sensitivity same as
give nfor internal and external sen-
sitivity .
One nanosecon d or less
at 10 nano-
second s/ d iv ision swee p rate ( M AG
switc h
set to
Χ
10) .
H O R IZO N TA L D EFLE CTIO N SYST EM
Α
an d ΒSweepGe nerator
P erformance R equi r
eme
n t
0 ° C to
+40 ° C

Ι

-15 0 C to +55 ° C
U
nmagnifie
d Ι M agnifie d I U nmag nifie d I
M
agnifie d
W
it
h i n
3%

Ι
W it h in 4 ° / ο

1 W it h in 5 ° / ο

Ι W it h
in
6%
W it h in 3%

Ι W
it h in 4%

1 W
it h in 4%
W it h in 5°/ ο

Ι
W it h in
5°/
ο Ι
W it h in 5%
Su pp lemental Information
One mego h m parallele d by 20 p icofara d s
(a pp
roximate) .
At least + and - 2 volts .
At
least + an
d -
20 volts .
600 volts DC
+ peak
AC (one k ilo h ertz
o r less)
0 .1 microsecon
d / d
ivision to 5 secon
d
s/ Ι Selecte dby
Α ΤΙΜΕ /DI V switch
. Step s in
d ivision in 24 calibrate d ste p s .

1-2-5 se qu ence .
0 .1 microsecon d / d ivision to 0 .5
sec-
Ι Selecte d by Β ΤΙΜΕ /DI V switch . Step s in
an d / d ivision

in

21

cali b rate d ste p s

1-2-5 se q uence .
W it h in 5%
W it h in 10%
Ο

V
aria
b
le Swee p
R
ate
Α Swee pL engt h
M ixe d
SweepAcc u racy
Cali b rate d Delay R ange
Delay Acc u racy Over Center
E ig h t Divisions
5sto0 .1 s/DI V
50 ms to 1 μ s/DI V
Incremental Mu lti p lier L inearity
Delay Time J itter
Accuracy
R
esistance
Ca pacitance
C h aracteristic
In p u t to CH 1 or Χ connector
Deflection
F actor
Χ B and widt h at Up per -3 d B
P
oint
In p u t RCC h
aracteristics
Ph ase d ifference between Χ
and Υ
am
p lifiers
TA BLE 1-1 (cont)
Specificatio n -453 Α / R 453A
P erformance R equirement

I

Su pp lemental Information
Contin u ously varia b le b etween cali- Exte nd s maxim u mΑ swee p rate to at
b rate d swee p rates .

least 12 .5 secon d s/ d ivision an dΒ swee p
~
rate to at least 1
.25 seconds/
d ivision .
V aria b le from fo u r d ivisions or less Ι
M
easured at 1 ms/ DI V .
to 10 d ivisions or greater .
M ixed and Delayed Swee p
W it h in 2°/ ο ± meas u re d Α swee p error

E xcl ud
e
first 0 .5 d ivisio nof d is played
w hen
viewing the Α p ortion only . Β

sweep an d 0 .2 d ivision or 0 .1 mic ro-
portion accuracy
is same as state d second, w h ic hever is greater, after tra n -
un d er Swee p Accuracy .

isition from Α to Β swee p .
Continuous from 50 secon d s to 0 .2

Selected by DELAY-TIME MUL TI PL I E R
microsecon d s .

( d ial and Α ΤΙΜΕ /DI V switc h .
0 ° C to +40 ° C

Ι -15 0 C to +55 ° C
W it h in 1 .5% of in-

W it h in 3 .5% of in-
d icate d d elay

Ι d icate d d elay
W it
h
in
1 .5%
ο
of
in-

W
it h in 2°/ ο of in-
d icate d d elay

d icated d elay
W
it
h in 0 .2%

Ι W it h in 0 .3%
L ess th an 1 part in 20,000 of t he
maxim u m availa b le d elay time (10
times Α
ΤΙΜΕ
/DI V switch setting) .
E
xternal H orizontal Am p lifier
5
millivolts/division to 10 volts/ ΙΙΝΤ T R IG switch
set to C H 1 O R Χ -Y .
d ivisio n in 11 cali b rate d ste p s .

Step s in 1-2-5 se qu ence
.
0 ° C to +40
° C

-15 ° C to +55 ° C

E xternal
h orizontal gain correctly a d -
W it h in 5°/
ο
of
in- W ithin 8°/ ο of in-
D
uste d at
20 mV .
d icate d d eflection

d
icate d deflection
F
ive mega
h
ertz or greater
3° or
less at 50 k ilo h ertz
1 mego h m ±2°/ ο
A pp roximately
20p icofara d s

S p ecification-453
Α
/
R 453A
In p u t to ΕΧΤ TR IG O R Χ I NPU T
Connector
Deflection Factor
Χ Ban d wi d t h at U pp er -3 dB
point
In put RC C h aracteristics
Ph ase d ifference between
Χ and Υ am p lifiers
M axim u m Safe In pu t Voltage
Waves hap e
P olarity
O u t p u t Voltage
O
u t p u t C u rrent
Re p etition Rate

Ι One kilo h ertz
.
Acc u racy
V oltage
C u rrent
Re p etition
Rate
Risetime
O u t pu t Resistance
Ch aracteristic
TA BLE 1-1 (cont)
P erformance R e qu irement
Β SO UR
C Eswitch
in
ΕΧΤ
; 270 milli-
volts/ d ivision ±15% .
Β SOUR C
Eswitch
in ΕΧΤ
-
10 ;
2 .7 volts/ d ivision ±20%
.
F ive mega h ertz or greater
3°or less at 50 kilo h ertz
Squ are wave
P ositive going .
CA L I BR ATO R
0 .1
volt or 1 volt, peak to peak
F ive milliam p eres t hro u g h PR O BE
L OO P on si dep anel
0 ° C to +40 ° C

-15 0 C to +55 ° C
±1%

±1 .5%
±0 .5%

Ι ±1°/ α
One microsecon
dor less
Su pp lemental Information
Onemego h m parallele d by 20 p icofara d s
(a pp roximate)
600 volts DC
+ peak
AC (one kilo h ertz
or less) .
Baseline at
zero volts .
Selecte d by CA L I BR ATO R switc h .
A pp roximately 200 oh ms in 1 V
p osition
A pp roximately 20 oh ms in 0 .1 V
position

Sensitivity
Polarity of O p
eration
U sable F re q uency Range
I nput Resistance at DC
In put Co u p ling
M
aximum
Inpu t Voltage
Α and Β Gate
Waves hap e
Am p lit
u d
e
P olarity
Duration
O
u t p u t Resistance
C h aracteristic
Vertical Signal Out (C H 1 only)
O
u t p u t V oltage
Ban d widt h
O u t pu t co u p ling
Out pu t resistance
TA BLE 1-1 (cont)
P erformance
Re q uirem en t

Su pp lemental
Information
Ζ AXIS
I NPU T
Five volt peak -to- p ea k signal p ro d uces
noticeable mo d ulation at normal
intensity .
Positive-going in pu t signal
d ecreases
trace intensity ; negative-going
in pu t
signal
increases trace intensity .
DC to 50 mega h ertz or greater .
DC
co up le d
Rectangular pulse
Positive-going
O UTPUT SIG N A L S
Ap p roximately 12 volts pea k
Same duration as res p ective swee p .
25 millivolts or greater, for each d ivi-

Into one mego h m loa d . ΙΝΤTR IG switch
sio n of CR T d is p lay .

I
set to N ORM .
DC
to 25 mega h ertz or greater w hen
cascade dwith
C
hannel
2, or into 50-
oh m load .
DC cou p led
A pp roximately 47 kilo h ms
200 volts DC +peak AC
S p ecification-453
Α / R 453A
Baseline at ab out -0 .7 volt
A pp roximately 1 .5 kilo h ms .
A pp roximately 50 oh ms .

S p ecification-453 Α / R 453A
Graticule
Ty pe
Area
Ill u mination
Phosph or
Beam F in der
L i ne V oltage
L
ine
F
re qu ency
230-volts
nominal
C h
aracteristic
V oltage R anges (AC, RM
S)
115-volts nomi n al
M axim u m P ower Consum p tion
Internal
TA BLE 1-1
(cont)
P
erformance R e qu irement

Supp leme n tal
Informatio n
DIS PL AY
E ig h t divisions vertical by 10 divisions
horizon tal . E ac hd ivision e q uals 0 .8
centimeter
.
V
aria b le edge lig h ti ng .
Ρ31 sta nd ar d .
Ot
h
ers available on
s p ecial order .
L
imits d isplay with in gratic u le area
w h en p resse d .
115
volts n ominal or 230 volts nominal .I N
ominal

line voltage an dvoltage range
selecte d by
L i ne
V
oltage Selector . Given
voltages apply w hen
line voltage co n tains
2°/ ο or less h armonic d istortion
.
90 to 110 volts
104
to 126 volts
112 to
136 volts
180 to 220 volts
208 to 252 volts
224 to 272 volts
P
O WER SUPPL Y
48 to 62 h ertz
92 watts, one am
p
ere
at 60h ertz, 115-
volt line

TA BLE 1-2

C h aracteristic
ENV I R
O
NMEN
TA L C HA R ACT ER ISTICS
C h aracteristic
I

P erformance
NO ΤΕ
Cond u cte d in
This instrument
will meet the electrical characteristics

terference
given in Table 1-1 over
the following environmental
limits . Complete details
on environmental test pro-
cedures, including failure criteria,
etc ., can be ob-
tained
from Tektronix, Inc . Contact your
local
Tektronix F ield
Office or representative .

T r ansportation
Tem p erature
Op erating
Storage
Altit ud e
O p erating
Storage
Humi d ity
O p erating an d
storage
V ibration
O p erating a nd
non-operating
Sh oc k
O p
erating an d
non-operating
Electro-magnetic
Interference (EMI)
as teste d
in Μ Ι L- Ι -
6181D (w h e n
e qu ipped wit h
MOD 163D only)
Ra d iate d i n ter-
fere
nce
-15 0 C
to +55 0 C
-55 0 C to +75
° C
15,000 feet maximum . M aximum
op erati n g
tem peratu re d ecreases by
1 ° C p er 1000
feet increase i n
am p litu d e a b ove 5000
feet .
Teste d to
50,000 feet
F ive
cycles (120 ho u rs) to 95% rela-
tive h
umidity referenced to MIL-
E-16400F .
15 min
u tes along each of t he t h
ree
ma j or axes
at α total displacement
of 0 .025-i nch
p eak to p ea k (4 g at
55 Hz) with fre q uency
varie d from
10-55-10 Hz in one-min u te
cycles .
H ol d
at 55H z for t h ree minutes on
each axis .
Two s h oc k s
at 30 g, one- h alf sine,
11 millisecon d du ration
eac hd irec-
tion along eac h ma j
or axis .
G u illoti n
e-ty p e s h oc k s . Total of 12
s h ock s .
Interfere nce ra d iate d from
t he i n -
strument un der
test with i n t h e
Cooling
F i n is h
C h aracteristic
Overall Dime n sions,
453 Α
(meas u re d
at maxim u m p
oints)
H
eig h t
Wi d
t h
L en gt h
Overall Dimensions,
R453A (meas u re d
at
maximum p oints)
H
eig h t
Wi dth
L
engt h
Specification-453 Α / R 453A
P erforma n ce
given limits from 150 k ilo h ertz to
1000 mega h ertz (mes h filter instal-
le d ) .
Interference con d
ucted out of t h e
instr u ment u nd er test t h
roug h th e
p ower cor d with in t h e given
limits
from 150 kilo h ertz to 25 mega-
h ertz .
M
eets N ational Safe Transit type of
test
w
h en p ackaged as s h ipped from
Tek tronix,
Inc .
TA BLE 1-3
PH YSICA L
Information
Safe o p erating
tem p erat u re main-
taine d b y
forced-air cooling .
A
u tomatic resetting
t
h
ermal c utou t
p
rotects instrument from
over-
h eating .
Ano d ize d aluminum
p anel and
ch assis . Blue vi n yl-coate
d ca b inet .
7 .2
inc h es (18 .3 centimeters)
12 .6 inc h
es (32 .0 cen timeters)
20 .7 i nches (52
.6 centimeters) in-
cluding front cover ;
22 .4 i nches
(56 .9 centimeters)
wit h h and le
p
ositione d for carrying .
7 .0 inc hes (17
.8 centimeters)
19 inc h es (48 .3
centimeters)
17 .4
inc h es (44 .2 centimeters) b
e-
h in d front panel
; 19 .2 inc h es (48 .8
cen
timeters) overall .

S p ecif ication-453 Α /R453A
N et Weight
453 Α (inclu des
front cover
with-
out accessories)
R453A (without
accessories)
Characteristic
Information

STANDARD ACCESSORIES
A p proximately

30

p ounds

(13 .6

Stan d ar d accessories su p plie d with the 453 Α an d
R453A
kilograms) .
are listed in t he M echanical P arts L ist illustrations . F or
A pp roximately 33 .5 poun d s (15 .2
optional accessories available for u se with t his instrument,
kilograms) .

see the current Tektronix, Inc . catalog .

O PER ATI N G I
N
ST RU CTIO N S
Change information, if any, affecting this section will be found at the rear of this manual .
ι
ι
t
ι
ι
ι
General
To effectively u se the 453 Α , t he operation
an
d
ca p abil-
ities of the instrument must be k nown
. This section d e-
scribes the op eration of the front-, si d e-, an d
rear- p anel
controls and connectors, gives first time an dgeneral op er-
ating information, and lists some basic a pp lications for
this
instrument .
F
ront Co ver
The front cover furnished with t he 453 Α p rovi d es α
d ust-tight seal aroun d t he front p anel . U se the cover
to
p rotect the front p anel when stori ng or trans p orting the
instrument . The cover also p rovi d es storage s pace for
p robes and other accessories (see F ig . 2-1) .
O p erating V oltage
CAUTION
This instrument is designed for
operation from α
power source
with
its neutral
at or near earth
(ground) potential with α
separate safety-earth con-
ductor . It is not intended fo r operation
from two
phases of α multi-phase system, or across the legs
of α
single-phase, three-wire system .
T he 453 Α can be op erate d from either α 115-volt or α
230-volt nominal line-voltage source . The L ine V oltage
Selector assembly on the rear p anel converts the instrument
from one op
erating range to the other . In ad d ition, this
assembly changes
the p rimary connections of the p ower
transformer to
allow selection of one of three regulating
ranges . The assembly also inclu d
es the two line fuses . When
the instrument is converte d from 115-volt to
230-volt
nominal op eration, or vice versa, the assembly
connects or
disconnects one of the fuses to p rovi de the correct p
rotec-
tion for the instrument
. Use the following procedure to
convert
this instrument between no m inal line voltages or
regulating ranges
.
ι
F ig . 2-1 . Accessory storage provi d ed in front cover .
NO
ΤΕ
Line

B lack
Neutral

White
Safety earth (ground)

Green
453 Α
/R453A
3 . To co n vert from 115-volts nominal to 230-volts
nominal line voltage, pull out the V oltage Selector switch
bar (see F ig . 2-2) ; turn it aroun d 180 ° an dp lug it back into
the remaining h oles . Change the line-cor d power p lug to
match t he p ower-source recep tacle or use α115- to 230-volt
ada p ter .
Color-coding of the cord conductors is as follows (in
accordance with
National
Electrical Code) :
1 . Disconnect the instrument from the p ower source .

4 . To change regulating ranges, pull out the Range Selec-
tor switch bar (see F ig . 2-2) ; sli de it to the d esire d p osition
2 . L oosen the two cap tive screws which hold t he cover

and p lug it back in . Select α range which is centered about
onto the voltage selector assembly
;
then pull to remove the

the average line voltage to which t he instrument is to be
cover
.

connecte d (see Table
2-1)
.

Op
erating Instructions-453 Α / R 453A
F ig . 2-2 . L ine Voltage Selector assembly on th e rear panel (s h own
wit h cover remove d ) .
TA BLE 2-1
Regulating Ranges
R eg u lating Range
Range Selector

115- V olts

230- V olts
Switc h
Position

N ominal

N ominal
T he feet on t he rear p anel p rovi d eα convenient cor d
wra pto store t h e p ower cord w hen not in use .
O p erating Tem p erature
T h e
453 Α
is
coole d by air d rawn in at t h e rear an d
blown out t h roug h h oles in t h e to pand bottom covers .
A dequ ate clearance on t he to p , b ottom, and rear m u st be
p rovi ded to allow h eat to be d issipate daway from t h e
instr u ment . T he clearance p rovi ded by t he feet at t h e
b ottom and rear s h ould be maintaine d . If p ossible, allow
about one inc h of clearance on the to p . Do not b loc
k
or
restrict th e air flow from th e air-esca peh oles in th e cabinet .
Α th ermal cutout
in t h is instrument provid es t h ermal
protection and d isconnects
t h e p ower to t h e instrument if
t he internal tem perature
excee d sα safe op erating level .
P ower is
automatically restored w hen t h e temp erature
returns to α safe
level . Operation of t h e instrument for
exten d e d p erio d s
with out t h e covers may cause it to over-
heat and t
he t h ermal cutout to op en . T h e air
filter s h oul d
be clea n
e doccasionally to allow t h
e maximum amount of
cooling air to enter t he instrument .
Cleaning instructions
are given in Section 4 .
R ac k mounting
ι
connect
t h is instr u ment to α two-wire AC p ower system, be

,
sure to
connect t he groun d lea dof t h e ad a p ter to eart h
(ground)
. F ailure
to
com p lete t he ground system may
allow
t he c h assis of t h is instrument to be elevate d above groun d
p otential and pose αs h ock hazard .
ι
ι
ι
ι
ι
ι
ι
L O (switc h bar in

90 to 110 volts

180 to 220
volts
left h oles)
Μ (switc h bar in

104 to 126 volts 208 to 252 volts

T h e 453 Α can

b e operated w h ere t he ambient air
mi dd le h oles)

tem p erat u re is between -15 ° C an d+55 ° C . Derate t he max-
ΗΙ (switc h b ar in

112 to 136 volts
224 to 272 volts

im u m operating tem p erature 1'C for eac hadd itional 1000
rig h t h oles)

feet of altit u d e above 5000 feet . Th is instrument can be
store d in am b ient tem p eratu res between -55 ° C an d
+75
° C . After storage at tem p erat u res beyon d t he op erating
5 . Re-install t h e
cover and tig hten t he two cap tive

limits, allow t he c h assis tem perature to come wit h in t h e
screws
.

o p erating limits b efore p ower is app lied .
6 .
Before ap p lying p ower to t he instrument, c heck t hat
t he in d icating tabs on t he switch bars are p rotru
d
ing

O p
erating P osit i on
t h roug h t he correct h oles for t he d esire d nominal line
volt-

The h an d le of t he 453 Α can be p
ositione
d
for carrying
age and reg u lating range .

or as α tilt-stan d for t he instr u ment . To p osition t
heh an d le,
p ress in at bot hp ivot p oints (see rig
. 2-3) and turn t he
h andle to t he d esired p osition .
Several p ositions are p ro-
vi ded for convenient carrying
or viewing . T h e instrument
may also be set on t
h
e
rear- p anel feet for operation or
This instrument may be
damaged if operated with t he

storage .
L ine V oltage
Selector assembly set to incorrect
positions
for the line
voltage applied,
T he 453 Α is d esigned to be used wit h αt hree-wire - AC

Co
mp lete i n formation for mounting t h e R453A in α
p ower system . If αt h ree- to two-wire ada p ter is used to

cabinet rack is given in Section 6 of t h is manual .
2-2

ι
ι
ι
ι
both si d es ! π ;
Lio n h αηλ 1e .
Fig .
2-3 . Hand le positioned to provi de α stan d for t h e i n str u me nt .
CO NTR O LS AN D CO NNE CTO RS

CH 1 O R Χ an d In put
connector for vertical signal .
General

CH 2 O R Υ
Α brief d escri p tion of the function or operation of t he
front-, si
d
e-, an d rear- p anel controls an d connectors follows
(see F
ig . 2-4)
. M
ore d etailed information is given in th is
section
un
d
er General O perating Information .
Dis p lay
I N
T EN SITY

Controls b rig h tness of d is p lay .
A L T : Dual trace d is p lay of signal
on b ot h ch annels . Dis p lay
switc h e d betweenc h annels at
en d of eac h swee p .
SCA LE I LLUM

Controls gratic u le illumination .
CH
O
P :
D u al trace d is p lay of signal
BEAM
F I ND ER

Com p resses d is p lay with in gratic u le

on

bot h

ch annels .

Disp lay
area in dep endent of dis p lay p osi-

switched between
c h annels at α
tion or a pp lie d signals .

re p etition

rate

of

about 500
kilo h ertz .
V ertical
(bot h c h annels exce p t as note d )
Provides a dj ustment for α well-
d efine d d is play .
O p erating Instructions-453
Α / R 453A
P
OSITIO N Controls vertical p osition of trace .
GAI N Screwdriver a dj ustment to set gain
of t h e V ertical P ream p .
Inp ut Cou pling

Selects met h o d of co up ling in p ut
(AC G N D DC)

signal

to

Vertical

Deflection
System .
AC : DC com p onent of in pu t signal
is bloc k e d . L ow fre q uency limit
(-3 dBp oint) is abo u t 1 .6 h ertz .
G N D : Inp ut circu it is grounde d
( d oes not grou nd app lie d signal) .
DC : All com p onents of t he in pu t
signal are p asse dto th e V ertical
Deflection System .
ST EP ΑΤΤΕΝBA L Screw d river a d ju stment to b alance
V ertical Deflection
System in the5,
10,
and
20 m
V p
ositions of t he
V
OL
TS/DI V switch .
M OD E Selects
vertical mo d e of operation .
CH 1 : T he C hannel 1
signal is d is-
played .
C H 2 : T he C hannel 2 signal is d is-
p laye d .
ADD : C h annel 1 and2
signals are
V O L TS/DI V
Selects vertical

d eflection

factor

algebraically a dd e dand t h e
alge-
(V A R cont rol m u st be in calibrate d braic sum

is dis p laye d
on t he
p osition for in d icate d d eflection

CR T .
factor) .
ΙΝΤ Τ R Ι
G

Selects source of
internal trigger sig-
VA R

P rovi d
es contin u o u sly variable d e-

ηαΙ from vertical system
. Also re-
flection factor between
t he cali-

lects so u rce of Χ signal for Χ -
Υ
brate d settings of the V
O L TS/DI V mode op eration .
switch .
N O RM : Swee p circuits triggere
d
UN CA L

L
ig h t in d icates t hat t he VA Rcon-

from d is p laye d ch annel(s) . C h
an-
trol
in not in t he calibrated

nel 1 signal available at CH 1
p osition
.

O UT
connector .
ι
2-3