Tektronix 533 User manual

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INSTRUCTION
MANUAL
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I
Tektronix, Inc.
S.W . Millika n Way P. 0. Box 500 Beaver t on , Or e go n 97 005 Phon e 644 -01 61 Cab l es : Tekt ro ni x
070- 258

Type 533/533A
WARRANTY
All Tektronix instruments are warranted
against defective materials and workman -
ship
for one year. Tektronix transformers,
manufactured in our own plant, are war-
ranted for the life of the instrument.
Any questions with respect to the war-
ranty mentioned above should be taken up
with your Tektronix Field Engineer.
Tektronix
repair and replacement-part
service is geared directly to the field, there-
fore all requests for repairs and replace-
ment parts should be directed to the Tek-
tronix Field
Office or Representative in your
area. This procedure will assure you the
fastest possible service. Please include the
instrument Type and Serial number with all
requests for parts or service.
Specifications
and price change priv-
ileges reserved.
Copyright ©
1961 by Tektronix, Inc.,
Beaverton,
Oregon. Printed in the United
States of America. All rights reserved. Con-
tents of this publication may not be repro-
duced in any form without permission of
the copyright owner.
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CONTENTS
Section Specifications
Section 2
Operating
Instructions
Section 3
Applications
Section 4 Circuit Description
Section 5
Maintenance
Section 6
Calibration
Procedure
Section 7 Parts
List and Diagrams
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Type 533/533A

Type 533/533A
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General
The Tektronix Type 533/533A Oscilloscopes are general
purpose instruments well suited to laboratory use. Plug-in
preamplifiers
are used in the vedical-deflection system,
permitting the instruments to be used
in many specialized
applications, including, among others, wide
band, dual
trace, low level, differential, maximum frequency response
and risetime,
and transistor risetime checking. Specifica-
tions listed below apply to both the Type 533 and Type
533A, except in cases that are otherwise noted.
Vertical Deflection System
All specifications for the Vertical Deflection System of
the Type 533 and 533A Oscilloscopes depend upon the
plug-in unit used with the instrument. The following speci-
fications
are given assuming that a Type K plug-in unit is
used.
Bandpass -
DC to 15 me (down 3 dB ± ½ dB at 15 me).
Risetime -.024 microseconds.
Delay
Line - Balanced network Signal Delay- 0.2 þÿ¼sec.
Horizontal Deflection System
Triggering Modes-Type 533, Automatic, AC Fast, AC
Slow,
DC and High Frequency Sync. Type 533A, Auto-
matic, AC
Low Frequency Reject, AC, DC and High
Frequency Sync.
Triggering Signal Requirements
Internal-a si_gnal producing 2 mm of vertical deflec-
tion except 4 mm in automatic and DC modes.
External-a signal of .2 volts to l O volts, peak to
peak. [The sweep will trigger on larger signals,
but the TRIGGERING LEVEL control operates over
a ± 10 volt range.) Automatic mode requires 0.4 V.
Triggering Frequency Range-triggered operation to
5 me.
Synchronizing Signal Requirements
Internal - a signal producing 2 cm of vertical deflection.
External - a signal of 2 volts.
Synchronizing Frequency
Range -- synchronized opera-
tion 5 me to 30 me.
Sweep Rates
Twenty-four position switch provides calibrated sweep
rates from .1 µsec/cm to 5 sec/cm. Accuracy typically with-
in 1% of full scale; in all cases within 3% of full scale.
SECTION 1
SPECIFICATIONS
Continuously variable sweep rates are available from
.l
µsec/cm to 12 sec/.cm
Magnifier
Six degrees of sweep magnification are provided; 2, 5,
10, 20, 50
and 100 times. Accuracy within 5% when the
magnified sweep does not exceed the maximum calibrated
rate of 0.02 microseconds/cm.
Unblanking
DC Coupling
External Horizontal Signal Input
Deflection Factor- Three calibrated ranges, .1 v/cm, 1
v/cm and 10 v/cm. Continuously variable between ranges.
Frequency range -DC to 500 KC in calibrated position.
Input
impedance - approximately 40 þÿ¼¼F paralleled by
megohm.
OTHER CHARACTERISTICS
Cathode-Ray Tube
Type T533P2-PI, P7 and PII phosphors optional.
Accelerating potential -10,000 volts.
Vertical Deflection
Factor- approx. 10 v /cm.
Horizontal Deflection Factor- approx. 28 v /cm.
Voltage Calibrator
Square-wave output at approximately 1 kc.
Output Voltages -0.2 millivolts to 100 volts peak-to-
peak in l 8 calibrated steps.
Accuracy - peak-to-peak amplitude of square waves
within 3% of indicated voltage.
Power Supplies
Electronically regulated for stable operation with widely
varying line voltages and loads.
Line voltage requirements -108, 1l 5, 122, 216, 230 or
244 v, (±9% on each range) 50 to 60 cycles.
Power- 500 watts with Type CA Plug-In Unit.
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Specifications -Type 533/533A
Sweep Time
I
I I -
20 - 30 Volts
I I
Output
/I
/
\ I
I
l7 ' /
0 Valts
7 V V
Swee
p
Time
Sawtooth Output
(Waveforms Displayed on Screen) Vertical Signal Output
Fig . 1- 1. Output waveforms available at the oscilloscope front panel.
Output Waveforms Available
+ Gate Output - approximately 20 volts pea k-to- peak
with same duration as sweep.
Sawtooth Output- Sweep sawtooth waveform, approxi-
mately 130 volts peak to peak.
Vertical Sign al Output - outp ut from ver tical deflection
system, approximately 1.5 volts peak to peak per centi-
me te r of vertical deflection.
Mechanical Specifications
Ventilation -filtered, forced air. Thermal re l ay inter-
rupts instrument
power in the event of ov e rheating.
Finish - photoetched, anodized panels . Blue finish, per -
forated cabinets.
Construction - aluminum allo y chassis and three-piece
cabinet .
Dimensions-
24" long, 13" wide, 16¾" high.
Weigh t - 61 ½ pounds.
Accessories
2 - Type P6006 Probes, 010-127
l - BNC to BNC Patch Cord, 012-0087-00
l - BNC
to Banana Jack, 012-0091-00
l - BNC
to Post Jack, 012 -0092-00
1-
Smoke Gray Filter, 378-0567-00
l - 3
to 2-Wire Adapter, 103-013
l -
3-conductor power cord, 161-010
2 - Instruction
Manuals
Fig. 1-2 . Type 533/533A Oscilloscope dimensions .
1-2 FREE
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Specifications-Type 533 / 533A
TABLE 1
PLUG-IN PREAMPLIFIER CHARACTERISTICS FOR TYPE 5 33/533A OSCILLOSCOPES
CALIBRATED INPUT
PLUG-IN TYPE DEFLECTION FACTOR PASSBAND RISETIME CAPACITANCE
TYPE A
Wide-Band 0.02 v/cm to 20 v/cm de to 14 me 25 nsec 47 pf
DC Coupled .
TYPE B 5 mv/cm to 0.05
v/cm
2 c to 10 me 35 nsec 47 pf
Wide-Band
High-Gain
0.05v/cm to 20v/cm de to 14 me 25 ns ec
DC Coupled
TYPE CA
Dual-Trace 0.05 v/cm to 20 v/cm de to 13 me 27 nsec 20 pf
DC Coupled
TYPED
High-Gain 1 mv/cm to 50 v/cm t de
to 2 me 0.18 µsec
47 pf
DC Coupled
DifferentiaI
TYPE E
Low-Level
50 µV/cm to 10 mv/cm 0.06 cycles to 60
kc 6 µsec 50 pf
AC Coupled
Differential
TYPE G DC
Wide -Band 0.05
v/cm to 20 v/cm de
to 14 me 25 nsec 47 pf
Coupled
DifferentiaI
TYPE H
DC Coupled
5mv/cm to 20v/cm
de to 11 me
31 nsec 47 pf
High-Gain
Wide-Band
TYPE -K
Fast-Rise 0.05 v/cm to 20 v/cm de to 15
me 24 nsec 20 pf
DC Coupled
T YPE L 5 mv/cm to 2 v/cm 3 c to 14
me 25 nsec 20 pf
Fast-Rise
High-Gain 0.05 v/cm
to 20 v/cm
de to 15 me 24 nsec
DC Coupled
TYPE N*
lO mv/cm 600
me
0.6 nsec Input Impedance,
Pulse Sampling 50 ohms
TYPE P* is a fast-rise
step -function test signal
un it .
TYPE Q* 10 µ. stra in/ d iv
de to 6 kc
60 µsec
Adjustable
Strain Gage
to 10,000 µstrain/div
TYPE R*
0.5 ma/cm to 100 ma/cm
23 nsec
Transistor Risetim e
TYPE S*
Semiconductor 0.05 v/cm
and 0.5 v/cm
Diode Recovery
TYPE T*
Tim e-Base
Generator
TYPE Z*
DC Coupled 0.05
v/cm
to 25 v/cm
Differential
de to 10 me
35 nsec 24 pf
Comparator
*More
data available on th e special-purpose plug-in units in the following paragraphs.
t At sensitivities gr e at er than .05 v/cm, maximum bandpass is less than 2 me. At l mv/cm, it is approximately 350 kc.
1-3

Specifications-Type 533/ 533A
Type N
The Type N Sampling Un it is desig ned fo r use with
Tektronix plug-in
type oscilloscopes. The sampling system
thus
fo rm ed permits the display of repetitive signals with
fractional nanosecond (10 9 second or nsec) risetime. By
taking successive samples
at a slightly l ater time at each
recurrence
of the pulse under observation, the T ype N
reconstructs the pulse
on a rela tively l ong time-base. Speci-
fi
catio ns of the. T ype N include a risetime of 0.6 ns ec, co r-
responding
to a maximum bandpas s of appr ox imately
600 me; a sensitivity of 10 mv/ cm with 2 mv or less noise;
and a dynamic rang e of ±120 mv minimum linear range
befor e overloading resul ts .
Accidental
overload of ±4 volts de is permiss ib le.
Type P
The Type P Plu g-In Unit generates a fast-rise step-
function test sig
na l of k nown waveform, simulating the
o
utput of an ideally compensated Ty pe K Unit driv en
wit h a Tektronix Type 107 Squa re-Wave Gene rat or. The
Typ e P permits the st an d ardizati on of the main-unit vertical
amplifier tran sie nt respon se of a Tekt ron ix conv ert ib le
oscilloscope. Risetime
of the T ype P is appr ox imat ely 4
nanosecon
ds when it is used to standardize a Ty pe 53 0-
Seri
es Osc il loscope. Puls e repetition rate is 240 step func-
tions p
er second, wi th either posi ti ve or negative polarity.
St ep function am plitude is continuously adjus tabl e betw een
0
an d 3 major graticul e divi sions.
Type Q
The Ty pe Q Plug-In Un it permi ts any Tektronix co nvert-
ible oscilloscope suc h as the T ype 533/533A to be ope rat ed
with strain gages and other transducers. Excitation volt -
ag es for the strain gages and tr ansducers ar e pro vid ed
by the plu g- in unit. The unit provides high g ain, l ow noise,
and extr emely low drift . Frequency response of the T ype Q
Plug-In Unit is DC to 6 kc; ri se time is approximately 60
microseconds. Strain
se nsi tivity is calib rat ed in 10 st eps
from 10 microstrain per majo r graticu le division to 10,000
microstrcin per division,
and is continuously var iable be-
tween steps.
Type R
T he Type R Pl ug -In Unit is a combined power s upply
and pulse generat or which is used to measure the high-
fr equency characteristi cs of junction transistors by the pulse-
response
method . Wh en the Typ e R is used in an osc illo -
s
co pe h aving a de lay line; de l ay time, risetime, stora ge
time, and falltime may be di sp lay ed simultaneously. A
pus
hbutton switch connec ts a front - pa nel terminal dir ec tly
to the input of the o sci ll oscope for observing exte rnally
derived waveforms .
Pul se ri se time of the Type R Unit is l ess t han 5 nano -
seconds,
so measurements depend on the r is etime of the
oscilloscope used.
Puls e amplitudes are 8 fix e d, ca librat ed
st e ps from .05 to 10 volts, adjustabl e between steps. Pulse
recurrence
freque n cy is 120 pul ses per seco nd .
Type S
The Type S Plug-In Unit is designed for use wi th Tek-
tronix Wid e-Band convertible oscilloscopes. The sl ower
risetime of the Tektron ix 530-Series Osc ill oscopes will af -
fect the
abi li ty of the S Unit to anal yze fast semiconductor
diodes. U
si ng the Type S, voltage across a test diode is
displayed as a function of time.
Ce
rt ain diode parameters, such as junction resistance,
junction c
apacitance , and the st ored c harg e at the ju nc-
tion, can
be measured re ad i ly and rel iab ly from the dis-
pl
ay. Performance of a d io de in a particular circuit can
be predicted by analyzing the recovery and "turn-on"
characteris ti cs. Si nce it is essentially a means for plott ing
voltage across an eleme nt while passing consta nt curre nt
through it, the unit can be used for other app lications as
we ll. For examp le: observi ng the junction characteristics
of transistors, or measuring the res is tance, capacitance or
inductan ce of c ir cu it components.
The
Type S offers calibra ted forward currents in f ive
fix ed ste ps from l to 20 milliamps , and r ev er se currents
calibrated in six steps from O to 2 mi ll iamp s. Di ode shu nt
capacitance is 9 picofarads, and deflection fact ors are
0.05 v/cm and 0.5 v /c m, calibrated .
Type T
The Type T Time-Base Gen erat or provides sawtooth
sweep
vo ltages from 0.2 þÿ¼sec/div. T he trigg er source
may be line frequency, extern al, ac or de coupled, auto -
matic or high-freque n cy syn c. Th e tri gge ring point can
be on either rising
or fa lli ng slope of the wavefor m, and
triggering le vel is adjust ab le . A signal of 0.2 to 50 vo lt s
is requ ir ed for triggering.
Type Z
The Type Z Plug-In ext ends the acc uracy of oscillos cop e
voltag e measurements. It can be used in three modes of
ope rat ion: (1) as a conve nt i onal pr eampl ifier, (2) as a
diff ere ntial input pre amplifier, or (3) as a cal ibrat ed dif -
feren
tial comparator. With sensit iv i ty of 50 mv/cm and
insertion voltage range of ±100 volts, th e effective sc ale
r an ge is +2000 cm . Maximum resolution of the T ype Z
Unit is .005%.
As a
co nvention al preamplifier, the Type Z U nit offers
a passba
nd of de to 10 me for the 533/533A for signals
that
do not oversc an the screen. The de flection factors
ar e 0.05 v olts/cm to 25 v/ cm in 9 fixed, calibra ted steps.
As a
differ ential input pr e ampl ifier, the Typ e Z ac ce pts
a
co mmon-mode si gnal level ±100 volts with i nput at-
te
nuation Xl , and offe rs a common-mode rejection ratio
of 40,000 to l. Maxi mum in put signal is l volt/7 nsec, or
- 1 volt/5 nsec.
As a
calibrat ed diff e rential co mparator , the Type Z
mak es av ailabl e three compar ison volt age rang es; from
zero to ± l volt, z ero to ± l O volts, and zero to ±100
vo l ts.
1-4
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General
The T ype 533/533A Osc illoscopes are ext remely ve r sa tile
instruments which a
re adaptable to a great number of
applicat io ns. H oweve r, to make fu ll use of the instru-
ments, it's
important that you unde r stand the operat i on
and function of the various controls . This section of the
Manual is designa ted to give you this information.
PRELIMINARY INSTRUCTIONS
Cooling
A fan maintains safe ope ra ting temperat ure in the T ype
533/533A by circulating fi ltered air over the rectifiers and
other components. When in ope ration , the ins tr u ment must
be placed so that the a ir intake at the back is clear of
any obstruction that might im pede the flow of air. Side
panels
should also be in pl ace for proper air c ir cu lation.
Th e air fil te r sh ou ld be kept clean, in accordance with
cleaning instructi ons found in the Maintenance Section
of the manua l.
U nder no circu mstances shou ld your Ty pe 533/533A
oscill oscope be operated wit hout the fan run ning . With-
out t he fan, in side te mp er ature of the oscilloscope will
rise
to a dangerous level in five to ten minutes. In this
event, the thermal cutout sw itch wil: disconnect the pow er
and keep it discon nected until t he temperatur e drops to
a safe level.
Power Requirements
Unless tagged otherwise, this in strument is con nected
at the factory for operation at l 05 to 125 volts, 50 to 60
cycles ac ( 11 7 volts nominal.) Ho weve r, p ro visions are
made for e asy conversion to operation at 210 to 250
volts, 50 to 60 cycles (234 volts nominal).
The
power transformer (T700 in Ty pe 533, T601 in Type
533A) is provid ed with split i nput windings, normally con-
nected in paral lel for 117-volt operat i on, but which can
be connected in se ri es for 234 - vo lt operation . Each of these
split windings termina tes in a nest of four terminal lugs
(arranged in a square) on the unders id e of the trans -
former. The l
ugs are numbered l, 2, 3 and 4 in a cloc k-
wise rotation.
SECTION 2
OPERATING
INSTRUCTIONS
Te rminals l a nd 3 are connecte d to one winding and
ter minals 2 and 4 are connected to the second windin g.
T he ac i nput l eads are connected to terminals l and 4
for both 117-volt and 234-volt operation , so t hese con-
n
ection s do not have to be changed when converting
from
one line vol ta ge to the othe r.
When wired for 117-volt ope ration, ter minals l and 2
are jo in ed by a bar e bus wire, and terminals 3 and 4 are
similarly j oi n ed, as shown in Fig. 2-1 a. To convert
th
ese terminals, substitute a s in gle c onnecting wire be-
tween t erminals 2 and 3, as shown in Fig. 2-1 b.
• • • • • • • • • •
• • • • • • • • • •
(a) (b)
• • • • • • • • • •
• 2 3 • • •
2 -- 3
• •
• 4 • • • 4 • •
117V
234V
AC
AC
Fig. 2-1. Converting the pow er transform er from 105 -1 25
volt
operation to 210-250 vo lt operation.
FOR 234-V OPERATION
Fig. 2-2. Converting the T ype 533 fan motor from l 05-125 to
21 0-250 vo lt operation.
2-1