Tektronix 545A Service manual

MAISIDBOOK
TEKTHONIX INC PjO. BOX 831 POHTLflWD 7, OREGON

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Intp Pori Iand, Oro^Od. Prinlod in
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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 *
\
2
3
4
4. TO
12
.. U
.. 16
.1?
.18
20
..22
.* 2^
.26
r, 2B
29
.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/ȣA.< 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.
14
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-
1

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
A
tlKiOlWND Lf¥IL
7

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
9

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,
12
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