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I
!r ffironlx COMMITTED TO EXCELLENCE
I
I
I WARNING
T H E F O L L O W I N GS E R V I C I N G N S T R U C T I O N S
I
I A R E F O RU S EB Y Q U A L I I E DP E R S O N N EO N L Y .
F
TO AVOID PERSONAL INJURY, DO NOT
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P E R F O R M N Y S E R V I C I N G T H E RT H A N T H A T
A O
I C O N T A I N E D I N O P E R A T I N GI N S T R U C T I O N S
U N L E S S O U A R E Q U A L IF I E DT O D O S O .
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PLEASECHECKFOR CHANGEINFORMATION
I AT THE REAROF THISMANUAL.
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INSTFTUCTION MANUAL
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Tektronix,Inc.
P.O. Box 500
Beaverton, Oregon 97077 S e r i a lN u m b e r
I 070-1483-00
F i r s tP r i n t i n g U G 1 9 7 3
A
R e v i s eA P R 1 9 8 1
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C o p y r i g h t o 1 9 7 3 l f e k t r o n i x ,I n c . A l l r i g h t s r e s e r v e d .
C o n t e n t so f t h i s p u b l i c a t i o nm a y n o t b e r e p r o d u c e di n
anyf ormw tn1.ltlhewritten permssi,O.n= x,.
olrTgktranl ,n,f-l I
P r o d u c t s o f T e k t r o n i x , l n c . a n d i t s s u b s i d i a r i e sa r e
covered by U.S. and foreign patents and/or pending
patents.
I
T E K T R O N I X T E K , S C O P E - M O B I L E ,n d @
, a
M E N T i s a r e g i s t e r e dt r a d e m a r k o f T e k t r o n i x U . K .
are
r e g i s t e r e dt r a d e m a r k s o f T e k t r o n i x , I n c . T E L E Q U I P - rl
L i mi t e d ,
P r i n t e d i n U . S . A . S p e c iifc a t i o n a n d p r i c e c h a n g e
I
privileges are reserved.
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or
I 214 Service
!o TABLE FCONTENTS
O
I S E CT I O 1
N IN T R OD U C T IO N
GeneralInformation
Page
1-1
I Specifications
Vertical Deflection System
Triggering
1-1
1-1
1-2
I Horizontal Deflection System
Display
lsolation
1-2
1-2
1-2
I AC Operation
Internal Battery Operation
Environmental
1-3
1-3
1-4
I S E CT I O N2
Physical
F U N C T IO N S F C O N TR OLS N D C ON N E C TOR S
O A
14
I Front PanelControls
SidePanelControls
2-1
2-2
lo S E CT IO N3 M AIN T EN AN C E
Introduction 3-1
I Preventive ntenance
General
Mai 3-1
3-1
Cleaning 3-1
I Lubrication
Visual lnspection
3-1
3-1
CRT Care 3-1
I Recalibration nformation
I
I
Disassemblynstructions
3-2
3-2
Troubleshooting 3-3
I Introduction
Troubleshooting
Aids
3-3
3-3
I Troubleshooting
Corrective
Equipment
Maintenance
ObtainingReplacement Parts
3-3
33
3-3
I ComponentReplacement
Recalibration
After Repair
I nstrumentRepackaging
34
3-6
3-6
f. RE VA P R 1981
I
214 Service
T A B L E F C O N T E N T Sc o n t )
O (
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S E CT IO 4
N C AL IB R A T IO N Page
General
Test EquipmentRequired
4-1
4-1
I
SpecialCalibrationFixtures 4-1
PreliminaryProcedure
PreliminaryControl Settings
4-3
4-3
I
PowerSupply and Display 4-4
CheckPowerSupply DC Levels
Adjust CRT Grid Bias
4-4
4-5
I
Adjust FOCUS
I
4-5
Adjust TraceRotation 4-5
Adjust StorageOperatingLevel 4-5
Adjust Wall Band Level
I
4-6
Adjust EnhanceLevel 4-7
Adjust Hum Balance 4-7
Vertical System
Adjust Vertical DC Gentering
Adjust Channel1 Step Attenuator Balance
4-8
4-8
4-8
I
Adjust Channel2 Step Attenuator Balance
Adjust Vertical Gain
Adjust StorageVertical Gain
4-8
4-9
4-9
ll
CheckGhannel VariableVolt/Division Range
2
CheckChannel2 Volts/DivisionAccuracy
Check lnput GouplingSwitches
4-9
4-9
4-10
I
CheckCH 1 Volts/DivisionAccuracyand
VariableVolts/DivisionRange
GheckChannel1 Volts/Div Gompensation
4-10
4-10
I
GheckChannel2 Volts/Div Compensation
CheckVertical Amplifier Bandwidth
TriggerCircuit
4-11
4-12 I
4-13
Adjust AUTO PRESETLevel
GheckTriggerCircuit Operation
CheckSingleSweepOperation
4-13
4-13 I
4-13
Horizontal System
Adjust HorizontalCentering
4-15
4-15
I
Adjust HorizontalGain 4-15
Adjust SweepCalibration
CheckVariableHorizontalMagnifierRange
4-15
4-16
I
CheckSEC/DlV Accuracy 4-16
o:
REV.APR 1974 @i
214 Service
fr T A B L EO F C O N T E N T ( c o n t )
SE C T ION5
S
T R O U BL E SH O OTIN A ID S
G Page
I DiagramInformation
GomponentColor Coding
5-1
5-1
Troubleshooting ipment
Equ 5-1
I SECTION
6 CIRCUT DESCRIPTION
I
I Block DiagramDescription
Circuit Operation
Vertical I nput Amplifiers
6-1
6-1
6-3
I Vertical and HorizontalOutput Amplifiers
Trigger Generator
SweepGenerator
6-3
6-3
6-3
I SingleSweep
Storage
PowerSupply
6-3
6-4
6-7
I CRT Circuit 6-9
lo SE C T ION 7 D E L ET E D
(IN F O R M AT IONN OW IN C OR P OR A TE D S E C TION 3I
IN
I SE C T ION8 E L EC T R IC AL R TSLIS T
PA
I OP T IO N IN F OR M AT ION
S EC T IO N9 D IA G R AMSAN D C IR C U ITB OA R D ILLU S TR A TION S
I SE C T ION 0 ME C H AN IC A L R TSLIS T
1 PA
C H A N G EI N F O R M A T I O N
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Tektronix 21 4 Storage Oscilloscope.
o:
I Section 1-214 Service
fo INTRODUCTION
t G E N E R A LN F O R M A T I O N
I This instrument will meetthe followingelectrical charac-
I The Tektronix 214 Storage Oscilloscope a solid-state
is
portable instrument that combinessmall size and light
teristics after complete instrumentcalibration.Thesechar-
acteristicsapply over an ambient temperature range of
-15oC to + 55oC (+ 5" F to + 131" F) w hen oper at ingr om
f
the internalbatteries, OoC +40"C (+32"F to +104"F)
and to
I weight with the ability to make precision waveform
measurements. is designed
lt for general-purpose
tions where display storageis desired,alongwith conven-
applica-
when operatingfrom an AC line source,
indicated.
exceptasotherwise
Warmuptime for givenaccuracies five minutes.
is
ti o nal ( NO NS T OR E) o p e ra ti o n . T h e i n s trument i s
I mechanically constructed withstandthe shock,vibration,
and other extremes
to
associated with portability. SPECIFICATIONS
Vertical DeflectionSystem
I The dual-channel DC-to-500kilohertz vertical system
I providesverticaldeflection factors from one millivolt (at a
DEFLECTION ACTOR:
F
reducedbandwidth) to 50 volts/division the tip of either
at
I of the integralhigh-impedance probes.The 214 will either Calibrated Range:One millivolt to 50 volts/division.
15
f automaticallychop or alternate, depending upon the srueep stepsin a 1-2-5sequence.
-
rate. Single-traceoperationis achieved turning off either
by
channel with its positioncontrol.SingleSweep operationis Accuracy:Within 5% with VAR VOLTS/DlV control in
'j;'#,^'J?lf CAL position and gain correctly set at five millivolts/
I O iffi ,, ?l:ffJ ffi
:xl,,.ff
i::lil"J ?1,H",. ,Ji:
of verticalfrequencyresponse.
di vi si on.
Uncalibrated(variable) Range: Continuouslyvariable
between calibratedsettings.Extends maximum deflection
I The horizontal deflection system provides calibrated factor to at least125 volts/division.
s1,\reeprates from 500 milliseconds five microseconds/
to
I division. Uncalibrated$,\reep rates, via a variable$/eep
I magnifier, are available at leastfive times the indicated
to BANDWIDTH(usingsixdivisionreference):
I sliveep rate for a maximum of at least one microsecond/
. 10 mV/DlV to 50 V/DlV: DC to at least500 kilohertz.
division.Stored Automatic Enhance occurs (in the Single
I Sweepmode) at sl,eeprates 0.1 millisecond/division
of and
faster. 5 mV/DlV: DC to at least400 kilohertz.
t
2 mV/DlV: DC to at least
200 kilohertz.
I X-Y operationis providedwith Channel supplying
1 the
horizontaldeflectionof the applied(X) signal, 1 mV/DlV: DC to at least100 kilohertz.
I with a range
from less than one millivolt to 50 volts/division(at a
reduced bandwidthof 50 kilohertz). Lower Bandwidth Limit, AC (capacitively)Coupled:
I 2
Channel supplies the
deflection the applied(Y) signal.
vertical of About two hertz at all deflectionfactors.
I
IN P U TR E S IS TA N C E :
One megohm, i thi n 5% .
w
I The cathode-ray
Storagetube having a 6 X 10 division graticule (each
d i v is ion
equals 2 0 3i n c h ).
0.
tube (CRT) is a direct-viewbistable
I N P U TC A P A C I T A N C E :
1 mV /D l V to 50 mV /D l V : A pproxi mately160 pico-
f.
The 214 is operated eitherfrom AC line voltage from
or farads.
internal rechargeable batteries.The internal batteriesare
recharged from the AC power line by the integralbattery 100 mV /D l V to 50 V/DlV: Approximately 140 pico-
charger(with the instrument OFF). farads.
1-1
I
@
Introducti on-21 4 Service
M A X I M U MU S A B L EI N P U TV O L T A G E : Horizontal Deflection System
50 V / DlV t o 0.1 V /D l V: 6 0 0 v o l ts(D C+ p e a kA C ). 600
volts peak-to-peak (five megahertz less).
AC or
50 m V / DlV t o 1 m V/D l V : 6 0 0 v o l ts (D C + peakA C ).
R
SWEEP ATE:
Calibrated Range: 500 millisecondsto five micro-
o:
seconds/division. stepsin 1-2-5sequence.
16
AC not over nruokiloherlz or risetimenot lessthan 100
nanoseconds. Accuracy (over center eight divisions): Within 5% with
V A R H OR IZ MA G control i n C A L posi ti o nand t im ing
correctly set at 1 mVDIV (disregard
of wveep length).
first 0.5 microsecond I
C H O P P E D O D E : F r o m5 0 0 m V D I V t o 2 m s / D l Vo f t i m e
M
rateat approximately kilohertz.
40
Linearity (any trruodivisionportion within centereight
divisions):Within 5% (disregard of
first lOo/o total srueep
I
l ength).
A L T E R N A T EM O D E :F r o m 1 m V D I V t o 5 p s l D l V o f t i m e
rate, VariableMagnifier;Continuously variable
brated settings.Extends maximum svveep
betweencali-
rate to at least
I
ivision.
one m icrosecond/d
I N P U T I M P E D A N C EM A T C H I N G : M a t c h e dt o w i t h i n
1Oo/o.
C H 1 H O R I Z O N T A LN P U T :
I
I
G A I N A C C U R A C YB E T W E E N H A N N E L S :W i t h i n 5 %
C
with both VAR VOLTS/DIV controlsin CAL positionand
Calibrated
division.
DeflectionFactor:One millivolt to 50 volts/
t
gaincorrectlysetat 5 mV/DlV. (usingVAR
Variable:At leastfive times magnification
H O R I ZM A G }
A ccuracy: W i thi n 1O% o i th V A R H ORI Z M AG in
(w
I
Triggering
TRIGGER ENSITIVITY:
S
CAL).
Less
X-Y Phasing: than 3o to five kilohertz.
ol
I nt er nal:
CO M P :0. 2 d i v i s i o n m D C to 5 0 0 k i l o h e rtz.
fro
Maxi mumInput V ol tage: ameasfor C H 1 (ver t ical) .
Display
S
t
CH 2: 0.2 divisionfrom 2 hertzto 500 kilohertz.
External:At leastone volt from DC to 500 kilohertz.
GRATICUE:
L
Type: Internal l ackl i ne,non-i l l umi nated .
B
I
PR E S E TT RI G G E R L EV EL : T ri g g e re d t p re s etl evelon
a
Area: Six divisionsverticalby 10 divisionshorizontal.
0.203i nch.
equal s
E achdi vi si on I
positiveslopeof triggering
above.
signal. Sensitivity same stated
as Stored Writing Speed
At
At least80 divisions/millisecond. least500 divisions/
I
mi l l i second A utomati cE nhance nternal
in (i adjust m ent ) .
DI S P LA Y J I T T E R : 0 .5 m i c ro s e c o no r l e s sa t 500 ki l o-
hertz.
d
lsolation t
f N P U T C OMMON TO 214 C A S E E X TE R R: ( When
IO
EXTERNAL RIGGER:
T
Approximately
lnput Resistance: one megohm.
battery operated with AC power plug secured in the
insulated cover.) Maximum f loating potential between
input common and 214 caseexterior is not to exceed500
I
Approximately30 picofarads.
I nput Capacitance:
volts RMSsinusoidal 700 volts (DC + peakAC).
or
I
Maximum UsableInput Voltage: Eightvolts (DC + peak
AC). 16 volts peak-to-peak (onemegahertz less).
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