Tektronix 545A Service manual

MAISIDBOOK

TEKTHONIX INC PjO. BOX 831 POHTLflWD 7, OREGON

Copyijght ©by Tcktidfibc^

Intp Pori Iand, Oro^Od. Prinlod in

Ihe United ofAnt^rlco, Afl

rightjrescrvad. Consents of ihii

puhlicnfiOn muy not be fopwoduced

any form without pemiision of

Ihe copyrighi Owfier.

INTRODUCTION

The follow ifig pa^^3^ provide a

rapid ruMns of seMfng Ihe conlrolt

of your Tebronrx Type 535Apa-

Type 5^5A OicMIoscope, Thii in for-

molion hdesigned to give you

not only control leM frigs for $pecffk

opplicdtion^ -hat oiso various func-

lions of these controlj daring differ-

enl QpenpPionof procedures;

An imporronl port of this hook

ccveri "triggered operation of the

oscilloscope. Heoj, some "Irigger-

lignai starts ihe horf^oniol

trace- ocross the icreen, beginning

ot the Jeh bond side of the grqt-

icule. For pfoscnl purposes, then,

"triggering" ton bo rofeen os Synon-

Jfrnow with Itarlifig tlie borfionid

sweep of the irpce.

CONTENTS

Proba AdjLn^mEnr ^,* +4... .,.

Characterrilics of Plug-In and

T)fpe 535A-545A Comhiroilions ,,^^

Saicciing Iha Tf iggcfing Signal ,,h._

Triggered Operafian; AUTOMATIC MOO£

Triggered Operolion- AC MODE

Triggtijcd Opcratioa: DC MODE

Triggered Operahiort: AC, LF REJECT MODE .

Triggered Dpertattort

Uiing iJio Type CA Piugin UnJl

SyncJimnized Operafbri: HF SYNC MODE 4^

Free Running Sw<?^p Operorion .,^+

Dcrayad Trigger Operarbn

Defflyed Sweep Opera fipn

Deicyed Sweep Exponded

Single Sweeps; Maneaf Operoiion

Single Sweeps; Triggered OpGratraji

Eiil&jngf Sweep Operafien

Using rba Voripbfo STABJLnV Control

Possible Couses for lack of Troco ^^

OpOfdbng Ddscriplion of Conlfds

nef Conneclors *

4. TO

.. U

.. 16

.1?

.18

..22

.* 2^

.26

r, 2B

.30

Cl?

BEFORE USING PROBE

ALWAYS CHECK fTS ADJUSTMENT

PROBE adjustment

An fid|ij3l<ih1c copoci^of mflig probtr body compcjiiolcj

fo[ vorialions in, jjipyt capocitam^ from one msttumenT to

qjioilhE^^ ^rliQi your pulip and irom^nt m^piurcmenls-

be cmcurdle. Taych the probe lip to the oscilloscope coli-

bi olqr agtput connecfor ond odju^l Ihe osei Ifoicop^ cQnlroJ$

lo display leverdi tycki of ibe waveform.. Ad|usr iho probe

capdcl(nr for oih\ top on \he colibrolor square wove.

SJSm/EiiU- I1

CHARACTERISTICS OF PLUG-tN

AND TYPE 53SA/TYPE S4SA COMBINATIONS

For ihe complele ll«l of spedlicatFons, ]nc:lt)drFig rfsclimc

Odd jnpijt cgpflcilancc, lee (he initrucrion marufol !or l}ie

In?h-Lfmen! Involved.

PLUG IN 1DEFLECTION FACTOR

ICalibroFcdl 1BANDPASS

535A/545A

fvPE A.05 vfLHi lo 20 v/cm dc tci 14 mc/20 me

TYPE B.OS v/cfn io 20v/tm dc to 14 me/ 12 me

TYPE B

type CA’ 5mv/cm Id .OSv^Cffl

.05 v/c^n ki 20v/cm

2_c tq 10mc/dc to 20 me

dc tq 15mc/24TTic

TYPE 01 1inv/cm lo 50v/cm dc lo 2me

TYPE Et 50fiv/cm to lOmv/cm .06 e60 Isc

TYPE G^ .,0Sv/cm lo 20v/tm 1dc lo 14 mc/20 me

TYPE hr Smv/dm to 2D v/cm dc to \1mil 15me

TYPE K-OS v/cm So 20 v/cm ^de td T5mc/30 me;

lYPB 1Smv^on Id 2v/c:m: 3eId T5 mc/24 mt

_TYPE 1.DSv/cm lo 20v/tjn do lo 15rnc/B0itic

Qf .Single -troce Difftrphl'lal,.

Dlflcjicnpiet IrilpHi- AvniJobl#^

SELECTING THE Tl^tGGEIMNG SIGNAL

1* To trigger iHe sweep from \h^ waveform being tih served^

ser block TRIGGER SLOPE swMch io +INT. or -INT,

2+ To trigger ihe ?weep fi’Cri the po^er-IIne ^ove (lo ob-

serve owavcForm tKiving otime refotronship fco Ihe power-

line Wave}, .>:ei blade TRIGGER SLOPE SWITCH to -J-

LlhlE or ^IFHE

3. To trfgger ihe sweep rr&m on ejtrernol wavoForm which

hot atime rebiion^hip fo iN obsci’vcd waveform^ cofin&ct

the irrggenng wave to Iht appropfiota TRIGGER INPUT

cocini^clor^ dn-d soJ flic block TRIGGER SLOPE ^wildl lo

+EXT or -E)fT.

4. JF you want the stdrr oi tho deploy lo occinir ot otime

when ihe Iriggering jigrioi is rising {has aposilivc slope!,

use Mic -h podtiom of Mie black TRIGGER SLORE rwiich.

To slort \he display at atim^ when ihe J^iggering signal ^

foiling ihds dfi<igoiiv<? slopcJn use the -posllrons of Ihe

block trigger slope swFkh.

UU/»£A.< k3

TRIGGERED OPERATiON

AUTOMATIC MODE

for periodic

dO cythi lo 2m^gacyctni

This mode hportFculcirly useful thongfng llie inpul

connetlion from one point mthe dfcuil Jo qriolbcr, Upro-

vider DIrocc wilfi or wilhoul aIri^^erin^ ii^nof.

CONTROL PbriTtOH FACE*

HOJMZOhTTAL OlSf»LAlT A4r 330

TRtGGEHlNO MOa£ AUTO. 31

TtIGGES &LOP1 t-HNT or —INI 31

STMIUTr NOT USED 31

TRIGGERING L£VEL NOT USED 3^

lo 4j«-Kriptrofi oF tliH CDfilnol luncJian; iri thil -b4i&ki

7page

Set ifie appraprio^o TiME/CM iwilch lor hisc derired lirn^

boiB ond the red VARIABLE knob lo CALIBRATED, li Ihc

wpvelorni doe$ mol appear, refer to poge 29.

In thii dnod&, the red STABILITY knob

TRIGGERING LEVEL oonlrol r^ecd no ndjualrtienl

iweep is triggared at the averqge-vallpge poinl ori ihe

woveform

Erj^nt

TwinniAMn iniFi

usA/a-vaA-

TftiGGEHED OPERATiON

AC MODE

For IfansiejTf or perjodt Frgnp^r

IS c/ctes f& 5megpc/des

Thii mode \% pofltcubrly useful kkr low-frecfyency signali.

Il pFovidei alroc.e orify wfiEn oJriggerSng signal occurs.

CDKTRDl POSlflON PAGE*

MORIZONIAL DlSfLAY A«r Hr30

TmcaEiirNS MODt AC *11

WbaER SLOPE t+INT dr —IWf 31

5TAIILITY ^TatSET 31

TmCG-ERING LEVa Fuil^ li^fT D-r rTghP 31

lo daxcripljon pf 111# (fluffol fwflsrmfl in lli[^ bo«iq.

t5e^ pofl* 3-l

ttikk I4ii rfd ^TAeiUTY hj>ab luN kit 4o

In £cl Hie bJock TIME/CM switch for Hie desfied TIME BASE

Qfld ihe TEd VARIABLE knob io CALIBRATED.

2, Turn (lie black TRIGGERING LEVEL CONTROL slowly

lowofd Ihe cenlcf of iH range fp-r aifoblo display,

If Iho WQveldfiTi- does not oppeor, refer lo Page 2?,

In Hijj mode, the biocli TRIGGefilNG ,fVEL c&ntrof deter

niHioi The fwighf on ihe wovsfoftn ot A-hich the trace *jll

start Trtggefing is unaHeaed by tKr? dr comjMrHjntr of the

l-IgatJina tignol or by Ihe VERTICAL POSITION conirol.

mfiiY

TIME BASE

tlKiOlWND Lf¥IL

TRIGGERED OPERATION

DC MODE

for IronsTe/rf or perj'odk sj&rtofi

DC fQ irn^gQcydm

Thii mode is (SQ/ficukafly uii^Fyl For vgnali ^hfl^ cluifigc

slowly, signals below Ibe frcqiieicy limiF of the AC

MODE.

CONTROL POSITIQM PA^E^

HOmiONTAL Di^pur AOt b10

TRI^^^IINC MO[lE~ OC 31

~SIOPE t+INT vw —thlT ^31 1

STAfttLlTT~ 1piiESEr 31

TRIOGEIING UV|L Full t*rp «r rl>Bhr 32

Ip ol Iha certirol fvnclJpn In i^<i bti^k.

t5cfl pagn 3,

l-cikh tli« Tti4 STAIUITY Lnub IhII I«PI Pp PRESET,

KSet fhfi oppri'opriaFc TIME/CM swif^h fat fho dedrcfl fime

base^ and ^he red VARJABLE knob \o CAH6RATED-

2.Turn !be block TRIGGERING LEVEL control slowly iqward

iho center of ils ran 343 for aliable dispio/- Final Mtlinpg

oF this conirql ^itl depend “U|^n the VERTICAL POSITION

cqnirdf. UPh* display hposhipned lo the iop of boHom

of the grotrcule, the TRIGGERING LEVEL control Mfill be sef

lo eplhflr side of the mid-ronge posilion, If the woveform

does not Dppecirr f-oFer la poge 2?.

HCiRIZDHfM OlSPlAr

In ibrs mode, fho block TSfCGERING LEVEL control deter-

niiiies the point on the Iriggermg waveform where iriggerfng

of the sweep ocean. The trace oiJwayi stopts ot agiven

pqinl g-rr the grphcule for ct given TRIGGERING LEVEL

control soiting

TRIGGERED OPERATION

AC, LF, REJECT MODE

For fronxitirf or poriodk sJgno/s,

?0 lti^ocye/05 Fo 5megocycfei

THii mode is pnorlicylprly usefiJl fof ftliminoling ijrtdc^Er-

oble bw-frequcficy comporenrs in Ilie tdggersng signaL

CONTROL POSITION "PACe*

HOilZONTJM DUflAt Aor B3d

rRia^CERINCi MODE ACr Lf reject 31

“

TtrCGEi SLOPE f-jllNT dr —INT

stAiiinrr $PK1ET 3t

tkiooEfeiriG level Full l*ff Of right ii

'Aef-e^r:! 1o idd-KTipi'iQii dI the canli'cl IvrtcliiQhn In Ihiii back,

tlite piErg-Q 3.

ttiick |li« <#d STAmm kMb Iu3l Fiilt Id MlESfT.

$0 \htt block TiME^CM switdr for fh^ desitcd time base

and the red VARIABLE knob to CALIBRATED.

7Turn ihff block THJGGERING LEVEL cofittd sbwFy

wgrd the ceoler of its range lor aslobb di^ploy.

If the wgveform dofifi not appear^ refer to Page 29,

ia/mM-I 10

This mode hprlndipplly for uto with qduaf-hoco plug-m

ynit. However, \\ may be useM for redyeing jilter due to

Kym in ihc "Irsggafmg "lignal.

Uf-AyEl II

TRIGGERED OPERATION

USING THE TYPE CA PLUG-IN UNIT

Fcr or pirffod^i: f

JO JcjTocytJei Jo 5mcgocytJes

Oual-irace operp+ion is p*siibJt! with !bfe Typa CA PLUG-

IN UNIT. 1r> the ALTERNATE pcsiMorr, Jwq trotes may be

displciyed olfemal&Jy. la ^!ie CHOPPED posilksrij hvcf Iroges

may be diiploycd iimultanDQUily.

cohUoi POSITION

PAGE*

HOftIZOHTM DISt>LAr A«r B1rao

Tii c(S"irlHO“«6Wf“ "AC LF ftEJICT 21

ntlGdfl SLOPE t+JPJI «hr —INT 31

STASlUfY ^PRESET i

TRtCQEirNQ IEVH~ Full luft or ffght 33

^V'ePuTi Ip d«isrri|irrH^r dl thr cahlrdl fvi^dion ill IIU bfrQilc.

T3.

TCMch Thtl i«<l $TARF|(TV knah fait Id ^SESET.

1. Canne-tl Ih* source of the waveformi to the CHANNEL

Aaad Ihe CHANNEL Bconnectors on the plug-in, and place

thd MODE switch in fhe desired position.

2. Sel Fhe block TIMEj/CM switch tor the desired h'fne bow

Orel Ihe red VARfA&LE knob lo CALISRATID.

3. Turn the black TRIGGERING LEVEL conhcil slowly to-

ward the center of its ronge for asl'cible display.

Pf the wovefar^n docs rtoi oppeor^ reter to page 79,

Two- waveforms dis-

pfoyi>d wiih ?ho Type

CA Plu-a-in Uhltr The

MODE swikh iii wi of

Ibe ALTERNATE pasi-

tipn.

bH£A/i;«EA-l 15

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