Tektronix 5440 User manual

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1
T
EK T R O N IX
1
saao
OSCILLOSCOPE
1
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I N STRU CTIO N M A NU A L
Te k tronix, Inc .
Ρ . Ο . Box500
Beaverton, Oregon 97077

Serial Nu m b er
070-2139-01

F irst P ri n ti ng A PR 1976

W ARRANTY
All TEKT R O N IX instrume nts are warra n ted agai n st
d efective materials andwor k ma n s h ip fo
r
one year
.
Any questions
wit h
res p
ect
to
t h e w arranty sh oul d
be ta k
en
up wit h yourTE K TRON IX F ield E ngineeror
represe n tative .
All re q uests for repairs and
re p lacement parts
s
h
ould be d
irecte
d to
t h e T EK T R O N IX F iel d Office
or re pr esen tative in you r area . T h is will assure you
t h e fastest p ossible service . P lease i n clu d e t h e
instrument Type N umber or P art N um b er and Serial
N
umbe
r wit
h all
req uests for parts or service .
Sp ecificatio n s a nd price c h ange privileges
reserved .
Copyrig h t c 1976 by Te k tro n ix, Inc ., B eaverto n ,
O r egon .
P
rinted
in t h
e U
nite
d States of America . All
rig h ts reserved . Contents of t h is pu blication may n ot
be reproduced in any form wit hout permission of
Te k tronix, Inc .
U .S .A
.
an
d foreig n
Te
k tronix productscovered by
U
.S .
and foreign patents and/or p atents pend ing .
T
EK
TRON IX
is α
registered tra d emar k of Te k tronix,
I nc .

TABLE O F CO N T EN TS
SE CTIO N 1

O
PER ATI NG I NF O RM ATIO N
OPER ATI N G I N ST RU CTIO NS TA BLE OF CO N
T
EN TS
P age
F I R ST TIME O PER ATIO N 1-1
Calibratio n Ch eck

1-3
R ead out

1-3
B eam F i n der

1-3
E xter n al Inte n sity Input

1-3
G ENER AL OPER ATI N G I NF O RM ATIO N
1-3
Display F ocus

1-3
Trace Alig n me n
t Ad j ustme
n t

1-4
B eam F i n der

1-4
R eadout ( W or ks Only W it h 5400-Series Plug-In U nits)

1-4
O p tion 3, E xter n ally P rogrammed Sevent h an d E ig h t h
R
ead out
W
ords

1-4
Disp lay Switch
i
ng
L
ogic

1-4
V ertical Dis p lay M o d e

1-5
Χ - Υ O p eratio n 1-5
R aster Display

1-6
Inte n sity M odulation

1-6
Calibrator

1-6
Display Ph
otograp
h y

1-6
O PER ATI N G V O L TAG E 1-6
5400 P anel (Dust Cover) R emoval

1-6
P ower Transformer

1-7
I N ST RUMEN T CO NVER SIO N

1-8
R ACKM O UN TI NG

1-8
M ou n ti n g M et h o d 1-8
R ack Dimensions

1-8
Installing Th e Slide-Out Trac ks

1-8
I
n stallation An d Ad j ustme n t

1-11
Sli d e-Out Trac k M aintenance

1-11
O PER ATI NG T EMPER AT URE

1-11
PLUG-IN UN ITS

1-11
Installation

1-11
Selectio n
1-12
B
ASICOSCI
LL
OSCO
PE APPL ICATIO N S

1-12
P ea k -to- Pea k V oltage M easurements-AC

1-12
I n stantaneous V oltage M easurement-DC

1-13
Com
p
arison M easureme
n
ts

1-14
Time P eriod M easurement

1-15
Deter m ini n g F
re q
uency

1-15
R isetime M easu reme n t

1-16
Time Differe n ce M easurements

1-16
M ulti-trace Ph ase Differe n ce M eas u reme n t

1-17
H ig h R esolution Ph ase M easureme n t

1-18

5440
TA BLE
O
F
CO
N T EN
TS (cont .)

.
S PE CI F ICATIO N
2-1
P O WER TO E XT ERN A L E Q U I PMEN T

2-5
PERF O
RM
A N C E C HE C K

2-6
Intro d uction

2-6
Test Eq ui p me n t R e q uired

2-6
P relimi nary P rocedure

2-7
P erformance C hec k P rocedure

2-8
S ERV ICI N G I N ST RU CTIO N S TA BLE O F CO NT ENTS
S E CTIO N 3

CI R CU IT D E SC R I P TIO N
Introduction

3-1
I N T ERF
AC
E
CI
R
C U
IT

3-1
C h o p Oscillator

3-1
Divi d er Circuit

3-1
V ertical Amplifier and V ertical Integrate d Switc h i n g Circuit

3-1
H orizontal Amplifier

3-2
Trigger Am p lifiers

3-2
Ζ -Axis Sign al

3-2
VER TICA L A MPL I F I ER

3-2
Delay L i
n
e

3-2
Am p lifier

3-2
H
O
R IZO N TA LA MPL I
F
I ER
CI
R
CU
IT

3-3
Input Amplifier

3-3
Out p ut Am p lifier

3-3
Z-AXIS A MPL I F I ER AN D C RT CI R C U IT

3-3
Ζ -Axis Am p lifier

3-3
H ig h - V oltage R egulator

3-4
H
ig h - V oltage Out p uts

3-4
C R T Control Circuits

3-4
L O W - V O L TAG E P O WER S UPPL Y A N D
CA L I BR ATO R CI RCU IT

3-4
P
ower Input

3-4
L ow- V oltage R ectifiers and U nregulate d Out p ut

3-5
L ow- V oltage R egulators

3-5
L ine Trigger

3-5
C R T Heater W inding

3-5
Calibrator

3-5
RE ADO U T SYST EM 3-6
Disp lay F ormat

3-6
Develo p i n g t h e Disp lay

3-6
Circuit Analysis of R ead out System

3-7
S E CTIO N 2 S PE CI F ICATIO N AN D PERF O RM A N C EC HE C K
P age Ι
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TA BLE O F CO
N T EN
TS
(cont .)
SE CTIO N 4

M AI N
TENAN
C E

Page
PREVEN TI VE M AI N TENA N C E

4-1
CA B I NE T REM O VA L

4-1
C LE AN I N G

4-1
V IS UA L I N S PECTIO N 4-1
LUBR ICATIO N
4-2
S EM ICO NDU CTO R C
HE
C
KS

4-2
AD JU ST
MEN T A F T ERREP AI R

4-2
T RO UBLE
S
H
OOTI
N
G

4-3
T R O UBLE S H OOTI N G AIDS

4-3
TR O UBLE S H OOTI N G E Q U I PMEN T

4-4
TR
O
UBLE
S
H
OOTI
N G T E CHN
IQ
UE S

4 .-4
CO RRE CTI VE M AI N T EN ANC E

4-7
OB TAI N I N G REPL AC EMEN T PA RTS

4-7
SO L DER I N GT E CHN
IQ
UE S

4-7
COMP O
NEN T REM
O
V A L A N D REP L AC EMEN T

4-8
AD JU ST MEN T A F T ERREP AI R

4-12
REP AC K AGI N G F OR S H I PMEN
T

4-12
SE CTIO N 5

AD JUST MEN T
I NTR OD U CTIO N
5-1
Te k tro n ix F iel d Service

5-1
PREL I M I NA
RY PR
OC
E DURE

5-1
P
O
WER S UPPL YAND CA L I BR ATO R
5-1
C R T DISPL AY

5-4
VER TICA L SYST EM ( U si n g Calibration
F ixture)

5-5
VER TICA L SYST EM ( U sing 5
Α
48)

5-7
H O
RIZO NTA L
SYST
EM ( U sing Calibratio n F ixture)

5-8
H
O
RIZO NTA L SYST EM ( U si n g 5 Α 48)

5-10
RE ADO U T SYST EM
5-12
SE CTIO N 6

OPTION
I NF
O
RM ATIO N
SE CTIO N 7

REPL AC E A BLEELE CT RICA L P ARTS
SE CTIO N 8

DIAG
R AM
SAN
D
CI
R
CU
IT B OA RD I LLU ST R ATIO N S
SE CTIO N 9

REPL AC E A BLE ME C H AN ICA L P A R TS
Ι

CHA N G E I NFO RM ATIO N&T E ST E Q U I PMEN T
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5440

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5440 Oscillosco p e

Section 1-5440
O
PER ATI N
G
I
NF O R M ATIO N
T h e Te k tro n ix 5440 Oscilloscope
is
α
solid-state instrument designe d for ge n eral- p ur p ose applications . T h is
i n strument h as t h ree p lug-in compartme n ts t h at acce p t 5000-series plug-in units
to forma com p lete meas u rement system .
To effectively use t h is instrume n t, t h e o p eration a nd capabilities of t h e i n strument must be kn
ow
n . T h
is section describes
fro n t- p
a n el control fu n ctions, giving first-time and general operating informatio n . I n formatio n or( operating voltage,
'

instrume n t co n version, rac k
mou n
ti
n g, operating tem p erature, and p lug-i n i n stallation is also include d .
ι
'

Steps 1 t hroug h 19 of t he followi ng procedure p rovi de
an op eratio n al check to verify satisfactory operation of t he
oscilloscope
and associate dp lug-ins . R efer to F ig . 1-1 for
'

fro n t-panel con trol a nd connector
locatio ns .
'

1 . F or t he following proce d ure, α
5A-series amplifier
plug-i n sh oul d be i n one of t he vertical (left
o
r center)

Time- B ase Plug-in
pl u g-i n com p artments and α 513-series time- b ase p lug-in
should be i n t he h orizo n tal (rig h t) com p artment .

Display

Alternate (button out)
P osition

Ce n tere d
M ain Sec/Div

5 ms
2 . See Operating V oltage in t h is sectio n
before

V ariable Seco
nds/Div

Cal
(f
u
lly
cloc
k wise)
procee d
i
ng . Set t h eP O WER switch to off ( p ushed in) a nd

M ag

Off (button out)
'

co nnect t he 5440
to
α
power source t h at meets t hevoltage

M ain Trig L evel

Cou n tercloc k wise
an d fre q ue ncy re q
uirements of t h is i n str u me n t
.
Source

L eft (or R ig h t if t h e
am p lifier p lug-in is in
t he
'

3 . Turn t h e I N T EN SITY an d RE ADO U T I N T EN S co n -

cen ter com partment)
t r ols countercloc k
wise a nd pull t he P O WER switc h o u t to

Cou p ling

Auto T r ig, AC
tur
n
t
h
e i n str u me n t on . Set t h e fro n t- p a n el co n trols as

Cou p l, +Slo p e
follows :

M o de

M ai n Sweep
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F I R
ST TIME O PER ATIO N
Amplifie r
Plug-in
Dis p lay

On
P ositio n Centere d
C H 1 V olts/Div

.1
C H 1 V ariable V olts/Div

Cal
(fully
cloc
kwise)
C H 1 I np ut Cou p
li ng

DC
Trigger

C H 1
M ode

C H 1

O p
erating Information-5440
F
OC U S Control

I N T ENSITYCo n trol
Provides a
dju st m en t to
Co n trols d isplay brig h t-
obtai n α well- d efine d d is-

ness .
play .
ΕΧΤ I
N T EN SITY I NPUT
Con nector
P er m its app lication of Z-
axis
signals to the C R T
(DC cou p le d ) . Positive-
going signal
increases i n ten-
sity .
BEAM
F
I N D ER
Pu
s
h
button
Br ings beam on-screen ;
limits intensifie dd isplay to
area insi d e graticule .
F ig . 1-1 . Fr ont- an d rea r -panel cont r ols an d connecto r s .
RE ADO U T I
N T EN S
Co
nt r ol
Co n trols
b rig h t n ess of the
rea d out
portionof the
C R T d isplay . In
t h e f u lly
co unterclock
wise p ositio n ,
t h e
readout system is in-
operative .
G R AT I LLUM Co n trol
Controls Graticule illumi-
nation .
P O WER Switc h
Tu rns i n str u ment p ower on
or off .
CA L I BR ATO R L oop
Pr ovides positive-going
acc u rate 400-millivolt and
4- m illia mp ere s quarewave
at αfrequ ency of twice t h e
li ne fre quen cy for cali b ra-
tio n and probe compensa-
tio n .
2139-02

Operating
I n formatio n -5440
4 . Advance t he
I N T EN SITY control un til t
h
etrace
is at

14 .

Set t h e time-
b ase unit for magnifie
d o p eration .
t he d esired
viewing level . T he trace s houl
d app ear near t he

N otice t h at
t he read out d is p lay cha
n ges to indicate t he
graticule center
.

correct magnified sweep
rate . If α readout-co
d ed 10 Χ
probe is available for
use with t he vertical un it,
install it on
t he i np
ut
co n
nector of t he vertical p lug-in .
N otice th at t he
5 .

Connect a 1 Χp robe, or α
test lea d from t h e amplifier

d eflection factor i n dicate d by t
he readout is increase d by
p lug-i n i n put co nn
ector to t he CA L I BR ATO
R loop .

10 times w h en t he
probe is a dd ed . R eturn t he
time-base
unitto
normal sweep op eration an d disco
nn ectthe p robe .
6 . Tu r n t he M ain Trig Level
control cloc k wise un
til α
stable d isplay is obtaine d .
Ad j ust t h e vertical an
d horizon -

15 .

N otice t h at
t he rea d out from αp articular
p lug-in
tal

P osition

co n trols

so

t h at t he display

is
centere d occupies α s p ecific
locatio n on t he d is p lay area
. If eit her of
vertically and starts at t he left edge
of t he graticule .

t hevertical p
lug-in units is α dual-trace u
n it, notice t h at t he
read out for C han nel 2 a pp ears
with i n t he lower division of
t he crt below t he read out
for
C
hann el 1 .
7
. A dj ust t he F OC US control for
αsh ar p , well-define d
disp lay over t he e n tire
trace le ngth .
8 . Discon n ect
t
he
input sig n al and position t he
trace
vertically so
t h at it coin cides with t he ce n
ter h orizo n tal line
of
t he graticule .
9 .

If t he trace is not parallel
with t he center h orizo n tal
line, see Trace Alignment
A d j ustme n t i n t h is section
.
10 . R otate t he G
R AT I LLUM control t h roug h out
its
range and
notice t h at t h e graticule lines are
illuminate d as
t he control is turn ed cloc k wise .
Set t he control so
graticule lines are
illumi n ated as desire d .
Calibration C h ec k
11 .

M ove t h e trace two d
ivisions
below
graticulecenter
a n d
reconnect t he calibrator sig n al to t h e am
p lifier p lug-in
in put connector .
12 . T he disp lay s h ould be
four d ivisio ns in am p litu de
wit h six complete cycles (five complete cyclesfor50- h ertz
li ne fre q ue ncy) sh ow n h orizontally
.
An
i n correct d isplay
in d icates t h at t h e
oscillosoc pe mai n frame or p lug-ins
nee d to be recalibrated .
B eam
F inder
16
. M ove t he display off-screen
with t he vertical
p osition co n trol .
17 . P us h t he BEAM F I ND
ER button and observe t hat
t h e d is p lay compresses
i nto t he scree n area . R epositio
n
t h
e d
is p lay to screen ce n ter an d release
t he BEAM
F I ND ER button .
E xternal
Inte n sity In p ut
18 . Co nnect α 5 volt,
1 kH z si n e-wave or s q uare-wave
signal
to t he ΕΧΤ I N T EN SITY I NPU T connector on
t h e
rear p anel . Also, u se t he sig n al to externally
trigger t he
time-base p lug-i n .
19 .
Slowly rotate t he I N T EN SITY co n trol counter-
cloc k wise
until t h e trace appears to be αseries of dimme d
and brighten ed segme n ts . T he brig h te n e d segments
correspo nd with t he to p s of t he calibrator
squarewaves .
G ENER A L O PER ATI N G I NF O RM ATIO N
Display F ocus
R eadout

If α well-defined disp lay cannot be obtai n ed with t h e
13 . Turn t he RE ADO UT
I
N
T
EN S
control cloc k wise

F
OC U S co n
trol, even
at low
inte n sity setti n gs, ad j ustme n t
un til
an
al ph anumeric dis p lay is visible wit h i n t he to por

of
t he internal astigmatism
co
n trol may be require d .
bottom divisio nof t h e crt (reset t he F OC U S a dj ustme n t if
n ecessary for best d efi n itio nof th e readout) . C han ge t h e
V olts/Div switc hof t h e am p lifier p lug-in
t h
at is
selecte d for

To c
h
ec kfor proper setting of t he
Astig control, slowly
dis p lay . N otice t h at t he readout p ortio n of t h e d isplay

tur n t h e F OC US control t h roug h t he optim u m setting with
ch anges as t h e deflection factor is c h anged . L i k ewise,

αsignal d isplayed on t he crt scree n . If t h e Astig co n trol is
ch ange t he Sec/Div switc hof t he time-base un it
t hat
is

correctly set, t he vertical and h orizontal p ortions of t h e
selecte d for d is play . N otice t hat t he read out display forthe

trace will come into sharpest focus at t h e same position of
time-base u nit ch anges also as th e sweep
rate is ch ange d .

t he F OC U S co n trol .

Operati n g I n formation-5440
Trace Alignment Ad j ustment

dis p laye d
wit h i n
t he to p d ivisio
n
of
t he
gratic u le
and t he
If α free-run n i n g trace is not parallel wit h t h e h orizontal

rea d out from C ha nn el 2 is dis p layed directly below wit h i n
gratic u le lines, set t he Trace R otation ad j ustme n t (internal

the bottom division of t he graticule . Only t herea d out from
p lug-i n ch annels t h at are selecte d by d is p lay switc h es, or
ad j ustme n t) as follows : P ositio n th e trace
to
t he cen ter

by
t
h e mode switc h es of dual-c hannel p lug-i n s, ap pear i n
h orizo n tal li ne an d ad j ust t he Trace R otation a dj ustment

t he
readout display
.
s o t h at t he
trace is parallel wit h t h e h orizontal graticule
lines .
B eam F i n der
Th e BEAM F I N D ER switc h provides α mea ns of
locating
αd is p lay t h at overscans t he viewi ng area eit h er
vertically
or
h orizontally .
Wh en t h e BEAM F I ND ER switc h
is p resse d , t h e display is com p resse d wit h in t he graticule
area and t he display intensity
is
i n
creased
.
To locate
and
re p osition an oversca nn e dd is p lay, use t h e following
proce d ure :
1 . P ress t he BEAM F I ND ER switc h , h ol d it in, t hen
i ncrease t he vertical a nd h orizo n tal d eflectio n factors un til
t he d isplay
is
wit h i n t h e graticule
area .
2 . Ad j ust t h e vertical and h orizo n tal p osition controls
to ce n ter t he d is p lay about t he vertical and h orizontal
centerlines .
3 . R elease t he BEAM F I N D ER switc h ; t h e d isplay
should remain wit h
in
t he viewing area
.
R eadout ( W orks Only W it h 5400-Series Plug-in
U nits)
Th e rea dout system of t h e p ower su pp
ly/amplifier
and
d isplay mo d ules allows alp h anumeric d is p lay of i n forma-
tio n on t h e crt, alo n g wit h t he a n alog waveform displays .
T he information dis p laye d by t he rea d out system is
obtained
from
t he plug-in
units t h at are installe d in t he
p lug-in compartments . T he ch aracters of t h e readout
display are written by t he crt beam on α time-s
h
ared basis
wit h t h e signal waveforms .
T he R eadout System o p erates
i n
α free-r
u nn ing mo de
to
i n terru p t t he waveform d is p lay to p resent c h aracters .
T he waveform d is p lay is interru p ted for only about 20
microseconds for eac h c h aracter
t h
at is
d
is p
laye d .
T he rea d out information fro
m
eac
h p lug-in is called α
word . U p to
six (eig h t wit h Op tion 3) words of rea dout
information can be
d is p layed . T he locatio n at w h ic h eac h
readout word is p resente d is fixed and is directly
relate d to
t he p lug-i n u n it an d ch
annel from w h ic h it originated . F ig .
1-2 s h ows t he area of t h e g raticu le w here t herea d out from
each p lug-i n unit ch a nn el is dis p laye d
(external readout
programmi n g is available only
wit h Op tion 3) . N otice t h at
t he readout
from C han nel 1 of eac h p lug-in un it is
T h e RE ADO UT I NT EN S control determines t he i n ten-
sity of only t h e r eadout p ortio n of t he display i nd ependent
of t he ot h er traces . T he readout system is i nop erative in
t h e fully countercloc kwise O FF p ositio n Th is may be
desirable w h en t he to p and b ottom divisions of t he
graticule are
to
be use d for waveform d is p lay, or w hen t he
trace interruptions necessary to d is p lay ch aracters do not
allow α satisfactory waveform display to be obtained .
O p tion 3, Exter n ally P rogrammed
Sevent h and
E ig
h t h R eadout W or d s
Th is op tio n adds α25-p
in connectorto t he rear- p anel of
t
he 5440
t
hrough
wh
ic
h
two
ten-ch aracter readout words
ca n be dis p laye d on t he crt, see F ig . 1-2 .
DisplaySwitc h i ng L ogic
Th e electro
n
ic switc
h i n g
for
time-s h are d d isplays is
p roduced at t he plug-i n i n terface wit h i n th e mai n frame ;
however, t h e switc h ing logic is selecte d
i n t he p lug-in
units
.
T h e system allows any combi n ation of p lug-i n s a n d
Dis p lay switc h setti n gs . R efer to t h e indivi d ual plug-in
ma n uals for specific capabilities and operati
n g
procedures .
L eft
R ig h t
V ertical
V ertical
C h an
nel 1

C h a nn el 1
Horizontal H orizo n tal
Α
or
M
ai
n

Β or Delayed
L eft R ig h t
E xter n al E xter n al
V e r tical
V ertical W or d W ord
Channel 2

C hann
el 2

(C
h a nn el) 1

(C h a nn
el) 2
E xter n al rea dou t
i n formatio n w h e n
optio n is i n stalle d . 2139-03
F ig . 1-2 . L ocatio n of r eadout on th e crt identifyi ng t he origi-
n ati ng pl u g-i n un it and chann el (and exte
r
nal,
if
Optio
n3
is
i n -
stalle d ) .