Tektronix 576 schematic

CONTENTS
Section Section
n
Sectio Section
Section
Section
Section Section
1 2
3
4
5
6
7
8
Specification Operating Circuit
M
aintenance
P
erformanceCheck Abbreviations P
E
lectricalPartsList
M
echanical MechanicalPartsList Diagrams
M
echanicalPartsList Accessories
Instructions
Description
Ordering
PartsList
and
Symbols
Information
η P
ibratio
Information
Illustrations
rocedure
Abbreviations basedon 260 andot Change this
or
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her
standards
information,ifany,islocatedatthe
manual
.
andsymbols
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ofthe
Units",
electronics
MIL-STD-12B
are
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ustry
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d
d
.
of
Type
576
Fig
1-1
.
576
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aracteristic
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olar
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uces
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Thefollowing
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peratureoffrom
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eriodof5minutes,when previously
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eakCurrent
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ouldbedisregardedwhen
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h
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O
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Change
General
hissectionoftheinstruction
T
tionnecessary for operating to
testvar procedu connectors, first
mation
Type conducto
Cooling
whenoperatedinanambient
F)
.
s
hould be providedto
h
eat
instrument thepowertoth exceeds α restoredwhenthetem shouldbe certain
or
instrument whichis
Specification
ious
semicond
res,
αdescriptionoft
αdiscussionoft
timeop
TheType
h
erationprocedure,and
.
Alsoin
cludedisα
576
for
measu
rdevices
Adequate
away
conditions
ighstepgeneratorcur
.
I
N
ITIALCONSID
576
clearanceonall
f romthe
r
ovidesthermalprotection
p
ein
safe
op
notedthattheinstrument
beingoperatedinanambient
is
inthesp
wit
h
section
information,ifany,
uctor
section
ingthe ch
r
maintainsαsafe
uref reeair
ass
instrument strumentifthein
erating
eraturereturnstoα
p
ofhighcollectorsupp
ecifie
for
further
E
S
A
TI
N
G
affecti
manualprovides
heType576
t
d
evices.Includedare e
Type
h
het
heory
aracteristicsofvarious semi-
ER
temperatureof0°C
.Αthermalcutoutint
level.Powerisau
rent drange.See
information
576
oftheinstr
generaloperating
escribingthe
d
ATIONS
oper
ating
sides
ofthe
flowanddissipationof
by d
ternal
will
ly
Output
eventh
footnotesint
informa-
and
for
using
controlsand
ument,
useoft
tempe r
instrument
isconnecting temperatu
tomatically
safe
level.It
turnoffunder
current outp
ought
tem
p
.
CTIO
I
N
thissection
ng
it
setup
α
infor-
he
ature
(122
°
he
e
r
ut
he
erature
e
h
RU
line
P
ositio
leholes)
dd
holes)
2
ES
ELE
corres
followingpr
voltages,
ecttheinstrument
r
h
bar
N
ST
willbe found
V
OLTAG
tionwhich
U
sethe
between
1.Disconn
R
angeSelecto
Switch
L
O
(switc
leftholes)
Μ
(switchbarin
mi
ΗΙ(switchbarin
right
CTIO
the
rearofthemanual
at
CTORassembly,
pondstotheline
ocedureto
regulating
TA
BLE
R
egulati
115Volts
n
in
N
ominal
90to110 104to126
112to136
N
S
.
mustbeset
frequency
convertthisinstrument
ranges or
fromthepower
2-1
ngRanges
R
egulati
volts
volts volts
line
ngRan
180to220 208to252 224to272
tothe
being
u
sed.
fre
quencies
source
ge
230Volts
N
n
al
omi
posi-
:
.
_
volts volts volts
eratingVoltageandFrequency
O
p
TheType576can be operatedfromeither
line
α
230-volt
LE
version
one changesthe
to Table
Whentheinstrumentisconvertedfrom
operationor topr
60 Hz
gener switch,
R
CTO
ofthe
line
allow
2-1).T
ovidethecorrectprotection
T
heTy
linefr
atorwit
locatedon
voltage
assembly,
instrumentsothatitmay
voltageortheother.Inadd
connectionsofthepower
selectionof
he assembly
vice
pe576
eq hthe
source.T
locatedonthe
oneofthree
versa,th
may
uency
e assembly
be
operatedf romeither
.Inordertosynchronize
collectorsupply,
theType576rea
heLINEVOLTAG
also includes
for
rear
regulating
selectstheproper fuse
theinstrument
r
p
α
115-volt
ESE-
panel,
allows
co
eratedfrom
be o
p
ition,thisassembly
transformerprimary
ranges
(see
thetwo
115-voltto230-volt
the60Hz-50
anel
below
linefu
α 50
the LINE
.
Hz
heste
t
ses
or
or
Hz
n
-
.
α
p
l
tage
F
ig.2-1.LineVo
ontherear
panel(sh
Selector
own
assemblyand60Hz-50Hzswitc
withcover
removed)
.
h
OperatingInstructions-Type
576
2-2
Fig.2-2
.
Front-panel
controls,
connectors
and
readout
.
O
per
atingI
n
h
2
.Loosen
onto
thevoltage
cover
.
3.To
vice
versa,
2-1);turnit180
Changethe
e
t
two
selector
convert
from
outtheVoltage
pull
captive
screws
assembly,
115-volt to
Selector
then
230-volt
° and plugitbackintotheremainingholes
line-cor
d p
ower
plug to
matc
receptacleoruseα115-to-230-voltadap
4
.Toch lector tion
abouttheaverage
be
connected(see
5
.Re-install t hecover
screws
6
.Toconvert tooperation the
60 H
coincides
7.Beforeapplying theindicating throug cover
ange
regulatingranges,
switchbar
(see
F
ig.2-1)
andplugitbackin.
line
voltagetowhic
Table
2-1
.
fromop
with50Hz
z-50Hz
withtheline
switch(see
fre
powertotheinstrument,chec
tabs
on
hthe
for
t h e
correct desire
holesinthevoltage
dlinevoltage
pull
sli
deittot
Selectαrangewhichiscentere
) .
and
tightenth
eration
line
wit
h 60 Hzline
frequency
Fig.2-1)tot
q
uency
being
t h e
switchbars
and
w
hich hol
ter
pull
toremovethe
line
switc
h bar
hthe
power-source
.
d
th
voltage
(seeFig
e
cover
outtheRange
he d
esire
d p
htheinstrumentisto
e
twocap
fre
q
uency
(or
vice
versa),
sli
he p
ositionwhich
used.
kth
areprotruding
selector
regulating
assembly
range
.
or
Se-
osi-
d
tive
de
at
structions-Ty
. .
Fig.
2-3.Rear-panel
Ι
LLUM
controls
.
Control
p
e
576
CAUTIO
TheType576sh
age
Selector
t
he
wrong
Operation
oul
d notbeop
switchortheRan
position
ofthe
for
instrument switchesinthewrongposition op
eration
CONTROLS,CONNE
All tionoftheTyp panels of standard readout
vi
ded
onthefrontpanel
useofeachof necessary
functions
and
may
damage
CTO
controls
of
and
connectorsrequiredfor
e
576
are
the
i
nstrument and onthe
test
fixture
(seeFigs.2-2and
someoft heinstrument functio
.Familiarity
these
controls,
for
effectiveoperationofthe
are
describedinthe
C
RTand Readou
Controls
INTENSITY
Controls
Control
F
OCUS
Control
RE
ADOUT
Providesadjustment play
definition
Co
n
trols
N
erate
d
ge Selector
t
he
line
voltage
with
eitherofthese
will
cause
the
instrument
RSAN
locate
D
d onthe
front
2-3).Inadd
withthefunctionan
connectors
following
andthe
table
t
h
tness
brig
ofdisplay
.
brightnessofrea
wit
htheVolt-
switchin
app
lied
.
incorrect
.
RE
ADO
UT
normal
front
panel
opera-
andrear
ofth
e
ition,
n
shas
been
pro-
d
rea
dout
is
instrument.T
he
.
.
foroptimumdis-
dout
.
SCA
LEILLUM
Control Connector
CA
MER
PO
WER
Connector
R
eadou
ts
PER
VER
DIVRead PER
HOR
DIVR
eado
PER
ST
Readout
β
OR
gm
PER
DI
Readout
VER
TICA
C
URREN
Switch
A
T
out
IZ
u
t
EP
V
DisplaySen
L
T/DI
Controls
Provides
camera
Readoutind
graticule
+15
.
icates
illumination
volts
deflection
verticaldisplayasviewedonCRT
R
ea
dout
indicatesdeflection
h
orizontaldis
R
ea
doutind
of
p Generator
Ste
R
eadout
conductance
p
lay
icatesamp
output
indicates
per
divisionofCRT
play,
sitivityan
Selects p
lay
V
.
dPositioning
verticaldeflection
COLLECTOR-Normal ofinstrument
resents units
todetermine
tion factor
.Verticaldisplayrep
collector
.
for
as
viewe
beta or
current
eration
op
factor of
factor of
d
onCR
e
p
litu
d
.
factor
op
.Use
vertical
.
.
er
ste
trans-
dis-
of
dis-
eration
blac
deflec-
of
T
.
p
-
k
2-3
O
p
erating
DISPLAY
Selector
C
ENTERL
VA
LUE
HOR
IZO
VOLTS/DI Switch
Instructions-Type
OFFSET
Switch
IN
Switch
E
Allows display
(Clea it)Provides play
NTAL
V
Selectsthe h ofdisplay
576
EMITTER-Operation
ment
withMODE LEAKAGE(EMITT RENT).V
emittercu determine
ST
EPGEN Generator vertically.A
ting
d
eflection
N
O
operable
H
ORIZΧ1-Allowshorizontaldis-
play to
C
ENTERLINEVA
VER
erticaldisplay
rrent
.Use
verticaldeflection
-Stepsindicating output are
MPLITUDEswitchset-
per
d ivision
selection
offset
determinesver
factor
.
of
andmagnification
RM(OFF)-Disp
.
be
offsetusing
TΧ
1-Allows;verticaldisplay
tobeoffsetusing
NEVA
T
ERL
I
LUE
ofin
switchset
ER
orange
is
p
d
lay
lay
offsetisnot
calibrate
LUE
switch.
calibrated
switch.
stru-
C
UR-
represents
units
to
factor.
Step
displaye
tical
offset
.
EN-
C
ΗΟRΙΖX10-Horizontaldisplay
magnifiedby10 zon
taldisplaytobe
calibratedCENTERLINE
times.Allowshori-
offset
usi
ng
VA
LUE
switch.
VERTX10-Vertical d fiedby
d
isplaytobe
C
ENTERLI-NEVA
10
rplastic
times.Allows vertical
offset
flange
calibrated
isplay
using
calibrate
LUE
switch.
with n
umbers
offsetofdis-
magni-
on
.
Χ1(VERTorHOR
CENT
ERLINE
a
pp
earing
sents
inbluewindowre
numberofdivisions ofdisplayisoffset orh
orizontally
IZ)-Numberοη
VALUE
centerline
eit
hervertically
from
zero
switc
re-
p
offset
line.
Χ10(VERTorHORIZ)-Number
onCENTERLINE
a
pp
earinginblue
p
lie
d by 10
d
ivisionscen
set
either
verticallyorh
from
zero
offset
VA
LUE
switc
window
multi-
representsnumber of
terline
ofdisplayisoff-
orizontally
line
.
orizontaldeflectionfactor
.
H
CO
LLE
CTOR-
repr
esentscollector
gro
und.
BASE-Horizontaldisplay sentsbase ST
EPGEN
Generatoroutputa
ho
r
izontally.A
settingperdivisiondetermin
orizontaldisplay
voltage
voltagetoground.
-Steps
indicati
redisplaye
MPLITU
DE
re-
re
p
ng Step
switc
eshori-
to
or
to
n
taldeflectio
zo
Z
EROB
utton
Pr
p
lay
ovides
.
N
ORM-Wh
αzer
selector
(OFF),
d
p
ointonCRT
h
orizontal
positioncontrols
DISPLAY PL
AYOFF
in
one
of fourdisplay tions,ZERObuttonpr erencepointonCRTwhich be
positionedtover
(horizontal
d
centerline thatthe
switchsetting
h
oul
(S
d
DISPLAYOFFSE
set
is
toMAGNIFIER.)
CALBu
d
tton
P
rovides
d ivisions
flection vertical
N
O
RM-Wh
selector
signalwhich shou ofver forchecking
and h
(OFF),CAL button p
CRTof10divisio
on an
dhorizontal
DISPLAY
PL
AYOFF
inoneoffourdisplay
h
tions,CAL button p whic
hsh
on
CRTtoappearonvertical
terline(h
h
orizontalcen
set),
assuming
wasprop erlyadju
h
s
h
ouldbeperforme
n
factor
.
o
reference
en
DISPLAYOFFSE
switchis
ZERO
of zero
deflection
for
set
toNO
buttonprovides
vertical
for
.
OFFSET-Wh
SET
Selector
en
switchis
offsetposi-
ovides
ticalcenter
offset)
or tohorizontal
(vertical
CENT
offset)toinsure
ERLINEVA
lies
a
pp
to centerline
always be checked
T
Selector
ld
ca
ticalandhorizontalde-
calib
r
ationof
orizontal
e
switchis
amplifiers
n
DISPLAYOFF
set
r
ovidespoint
toNO
nsof
d
OFFSE
SET
eflection
Selector
.
T-When
switchis
offsetposi-
rovides
cause
oul
d
orizontal
refe
terline
r
encepoint
offset)
(vertical off-
zeroreferencepoint
sted.(Check
d with
the
d
RM
and
adj
usting
DIS-
ref-
must
line
LUE
wit
switc
u
se
.
SET
RM
vertical
DIS-
signal
cen-
or
on
DIS-
is-
T
.
h h
10
PLAYOFFSETSelectorswitchset to
MAGNIFIER.)
DISPLAYINVER B
utton
P
OSITIO
N
(Horizontal)
F
INEP
OSITIO
Control
T
tally
SwitchPr
taldisplay
NP
d
Invertsdisplay
about
centerofCRT
ovides
coarsepositioning
.
rovides isplay
finepositioningofh
.
vertically
andhorizon­.
ofhorizon-
orizontal
(Horizontal)
d
P
h
OSITIONSwitchP
(Vertical)
rovidesfine
d
isplay
.
p ositioni
ng
of vertical
2-
4
O
pe
rati
ngIn
structions-Type
576
FINEPOSITIO
Control(Ver
Controls
PEAK
MAX V
PEAKPO
W
V LE
OLTS
ATTS
ARIA
CTO
Switch
WER
Switch
BLE RSUPPL
Control
N
Pr
ovides
tical)display
Collecto
SelectsrangeofVARIA
RS
TO te
d
b
switc
h andrangeisi arrow.Whenswitchis and
1500, protective
with
StandardTestFixtures
tiononinter
Selectsnominalpea Collecto
n
ce
a
in
output.
indicatedby switchflange MAX SERIESRESISTORS
b
lac
kind icator.
W
ATTS
set
nominalpea
PEAKPO
seriesresistance ch
angedto
p
eakpoweroutputwhen
V
OLTS
COL-
Allows
Y
voltage
PEAK
finepositioningofvertical
.
rSupply
BLECOLLE
UPPLYcont rol.
elow
PEAK
Switchis
P
O
WER
ndicatedbywhite
setto75,
box
must be
(see sec-
locksystem)
rSupply,
series
withCollecto
PEAK
numbe rontra
appeari
PEAK
VOLTS
switchmust
P
.
k p
owerout
by
selectingresist-
rSupply
O
WER
W
ATTS
n
g
abovewh
in
arein
dicate
PEAK
be pu
lledout
nsparent
d icator
P
kpoweroutput.When
WERWATTS
main
taindesi
switchis
is
automatically
rednominal MAX
switchsettingischange
varying with
VOLTS
of
collector
inrangeset
switch.
by
loca-
W
ATTS
use
p
ut of
d by
O
WER
PEAK
d
.
supply
MAX
C-
350
ite
to
set,
d
is
.
L
OOPI
NG
CO
MPE
NSATIO
Cont r
ol
CO
LL E
CTO
S
UPPL
Y
Bu
tton
P
O
WER
ON-OFF
Switc
h
L
ights
P
OWERLight
CO
LLE
CTO
S
UPPL
YVOLT-
AGEDISA
L
ight
RE
R SET
R
BLE
LEAK
AG
REN
T)-
creased fie
lecto
1000
r
measures
rSupplymode
age output.
Allows
N
sation.Allows Does
pacitance Resets
d
Collecto
adj
nalan
dada
not
Collector
isabledby
ustmentoflooping
compensate
.
rSupplyis
evermaximumcurrent
former ceeded
Cont
L
D
dan
primaryof1.2Ampe
.
r
ols
ights
whenpoweris
Indicates
been
disabled.Lig
Supply
gerous
inputpower
Collector
may
suchαcase, requi
r
edtoenable
Also
lig
h
tswhenhig
erate
d
by
Gene
r
ator
causes
h
eat
.
E
Ver
(EM
ITT
tical
sensitivityisin-
times
.Vertical
ER
C
UR-
ampli-
emittercurrent.Col-
set
forDCvolt-
compen-
compensationof
p
terstraycapacitance
fordevice
inte
Supply r
if
nalcircuitbreaker
turned
r
atingoftrans-
toin
on
.
ly
Su
pp
h
tswhen
present
α
inter-
ca-
ithas
been
offwhen
r
esisex-
st rument.
voltagehas
Collecto
potentially
voltageatitsoutput.In
useofprotectivebox
CollectorSupply
Collecto
h current
r
Su
p
plyorSte
gen
instrumenttoover-
.
.
-
r
is
.
-
p
Ste
P
OLARITY
M
ODESwitch
Switch
Selects voltage
polarityofCollector
and
StepGener
-(
ΡΝΡ
)-CollectorSupplyvoltage
atoroutput
andStep Generatoroutput
negative-going
+(
ΝΡΝ
and
Step
p
ositive-going AC-Collector both
positive-
(sine
wave);Step
is
positive-going.Whenswitchis
to
AC
andnor
Selects Supply
modeofoperationof
.
N
ORM-Normal
.
)-Collector
Generatoroutpu
.
Supply and
Generator
position,
mal
use.5Χ
modeofoperation
CollectorSu
Supply
negative-going
outputisobtained.
DC(ANTI
ply peakvalue
LE
CTO
LOOP)
outputisDC
set
byVARIA
RS
UPPLYcontrol
-Collector voltage
Supply
voltage
t a r
voltage
ou
steprate
.
Collecto
Sup-
equalto
BLE
COL-
.
.
a r
tput
set
pply
e
e is
r
Controls NUMBER
O
STEPSSwitch
C
URREN
L
IMIT
T
Switc
STEP/OFFSET
A
MPLITUDE
Switc
h
OFFSET
Bu
ttons
StepGenerato
F
h
Selectsnumberofstepsperfamily
p
Generatoroutput.
P
rovidescu
eratoroutputw
r
rrent
limitoftheStepGen-
hen
voltage
stepsar
of
e
beingproduced. Selects
offset
Amplitudes
cu
age w
Allows
amplit
ude
of
StepGeneratoroutput
within
ent
rr
steps;within
ste
p
.Note
s
hen
usingvoltage steps
offsettingofStep
p
erstepof
blackarc
cautio
yellow
n
on
.
steps
an
represent arc,
volt-
front-panel
Generato
d
.
r
outputusingOFFSETMULTcontrol.
ZERO-No
offset available
AID-Allowszer eratoro
as
level
10
.
u tput to
steps
above
o
stepof
be offsetasmany
.
Step
Gen-
itszerooffset
2-
5
O
p
erating
Instructions-Type
576
M
OFFSET
UL
Control
B
STEPS
utton
PULSEDSTEP B
uttons
STEPFAMI Bu
ttons
RATE B
uttons
LY
PPOSE
O Generator outp
manyas10 set
T
P
rovides eratoroutp TUDE AID pressed
P
rovides (steplasts cycle)
Allows
S
appliedto α portionofnor
Pu
lsedsteps
Supplyou
300μs-Selectspulsedsteps
urationof300μs.CollectorSup-
d
plyisautomatically mode
80μs-Selects
d
u
ί
s automatically
mode 300 arepr steps
ever, matically
Allows tive familiesorone
ON
Generatoroutput.
OFFSINGLE-Pr
of
Once
Generator
pressedagain
tonispressed
Selects ted.
N
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2X-Provides
mal .5X-Provides
malrate
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p
ressedtogether,provides
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-Allows
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.
calibrated
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orOFF
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OPPOS
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eit
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steps
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ration
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StepGenerator
DeviceUnderTest
occuratpeakof
mal
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for
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uration
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essedtogether,
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buttons
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REP-P
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utton
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ITY
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Stand
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ard
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EMITTER of
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to
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ST
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Device
eratingposition
OPEN
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ternal
B
ASEOREMITINPUT
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Und
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B
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Allows
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Connectors
steptransitions
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U
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ly
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ase
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Generator
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will
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device
mitter
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be
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2-6
Oper
ating
Instructions--Type
576
ST
EPGENOUT
Connector ΕΧΤBASEO
EMITINPUT Connector
GROUN Connector
L
Caution
Controls
L
Selector
ight
ine
D
L
ight
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ter
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ighcurrent devices
this
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ed
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ear
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ange
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icates
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groundref-
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op-
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as
Yellow
Black(Buttons)
Dark Grey (Buttons)
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Indicates single most
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pe576
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front-
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FR
ONTPANEL
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control
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eachcolor
Colorsand
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Step Generator p
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sociate
Indicates (EM
t
he
switches
indicates
Table
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ITT
ERCURREN
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sion ofinstr
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icate
relationshipsbetween
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2-2
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olarity
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ows
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60 Hz
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576
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Fig.2-4.Controls could
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Th
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uctorcharacteristics
ting
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A
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measurementofboth
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ATIO
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measure
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rly.
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semi-
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2-
7
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Horizontal
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control
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he StepGenerator produces
or
voltageatα normal
icBlock
diagram
sh
esultisfamiliesofcharacteristics
Supply
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going.Theamp
1500
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volts
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.ThisCollectorSupplyoutputisap
uivalent)
terminaloft
rateofone CollectorSupply.Theamount stepiscontrolledby
numberofste
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either
t hebaseortheemitter(oreq
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hedevice
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pp
Su amplifyth to theseamp
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ly
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p
s
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e StepGeneratoront
and
latesoftheCRT.Thesensitivities
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trolledby
h andth
eHOR
switch.
Fig.2-5isα
thesecir ment
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cuitstothedevice
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iagramsh
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Deflectio
P
owingtyp
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ascending stepsofcurrent
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hedevice
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ertical
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followingprocedure allowsthe
familiar
as well as
or diodecharacteristics.Thisproceduremay
andDisplayAmp
F
IRST
576isreceived,
wit
hth e
howthey
l i
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TIME
O
PER
ATIO
N
it is
calibrate
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operatortobe-
frontpanel controlsandth
maybeusedtodisplay
alsobeusedas
d and
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eirfun
transistor
α generalcheckoftheinstrument'sperformance.For checkoftheinstrument'soperation
specification
giveninSection1,t
CalibrationProcedureinSection5must
1.Apply
2
.
Instrumentsh
minutes
3.SettheType576and
p
anel controls as
powertotheType
theinstrumenttowarm
Allow
oul
d op
after
ithas
beentur
follows
ADOUTΙLLUM
RE
GRATIC
ULEΙLLUM
576
erate
withinspecifiedtolerances
nedon.
StandardTest
:
INTENSITY FOCUS
VER
TICA
L
withrespecttot
he PerformanceCheckan
be used
.
.
forαfew
up
F
ully
counterclockwise
Fully
counterclockwise
Fu
lly
cou
nterclockwise
Cente
r e
d
minutes
Fixture
front-
mA
e r
c-
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5
2-
8
1 Centere
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DISPLAYOFF
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C
ENTERLINE
H
ORIZONTA
V
erticalPOSITIO
V
ertical
F
I
NEPOSITIONCentered
H
orizontalPOSITIO
H
orizontal
F
INEP
OSITIO
ZERO CA
L
DISPLAYINVER
ΜΑΧ
PEAKVOLTS
PEAKPO
V
ARIA
TORS POLARITY
M
OD
L
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CO
NUMBER
C
URREN
A
MPLITUDE OFFSE STEPS
UPPL
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MPEN
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BLE
CO
Y
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TLIMIT
T
S E
VA
L
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tered
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elease
15
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ullyCou
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As
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20
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ER
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Pr
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d
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Operating
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RTandRea
4.TurntheGRATICULEΙLLUM
range
.Notethatthegraticule
thecontrolistur
R
illumination
5.TurntheRE
range
.Notethatthe
titles
become Setthecontrol rea
dout
per
verticaldivision,1V
stepand20
6.Tu
appearsatt
ingthe
CRTphosph
thespotiseasily
7.Turnthe FOCUS
ju
stthe
F
P
ositioning
8.TurntheverticalFINEP
out
its
range
-1-2.5divisions
trolsot hatthespotiscentered cule
.
9.Repeat
control
.
10.Turnthe thatthespot switchis switchrepresent case
causes
P
OSITIONswitchtothe
10.Turnthe thatthe switc
hismoved
t
he
of
switchrepresent
this
case
t
he P
OSITIO
doutControls
ned
clockwise.Setthe
.
ADO
UTΙLLUM
fiber-optic
illuminatedasthecontrolisturnedclockwise
forth
edesiredreadout
shouldreadfo
k βorgmperdivision
rntheINT
he centeroftheCRTg
OC
U
S
Controls
.Notethatthecontrol
about thecenterhorizontal
step8using
moves
movedoneposition.(The
t hespottobe
spot
moves
causes
N
switc
r these
perhorizontaldivision,50ηΑper
EN
SITY
or,
adju st
visible,
control
one
the
butnot overly
con
forαs
t h
vertical
10divisions ofdeflection,whichinthis
vertical
coarse
5 d
ivisio
offthe
cente
coarsePOSITIO
5divisions
p
osition.(Themost
10 d
s
p
ot to be
htot hecenter
Instructions-Type576
controlth
lines
become
control
con
trolth
readouts
initial
.
control
r
t heINT
trolth
roughout
h
arp,
OSITIONcontrolth
vertically
e h
orizontalFINEP
P
OSITIONswitch.Note
n
s
vertically
extremepositionsoft
CRT
rposition.
vertically
ivisions
off
t heCRTgraticule.)Set
p
andthereadout
illumination.T
control
clockwise
aticule.To
EN
SITY
bright
well-defined
h
asαrange of at
line
ontheCRT
graticule.)Setthe
N
extremepositions
ofdeflection,which osition
.
roug
hout
houtits
α sp
until
.
rough-
g r
OSITIO
Note
its
he
mA
least
ati-
he
ill
u
minated
fordesire
roug
settings;1
until
avoidburn-
control
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its
range.Ad-
spot
.
Setthe con
each timethe
switch.
eac
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as
d
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ot
-
N
in
REP
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ST
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AT
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Terminal
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AM
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FF-RIGH
L
I
S
Y
Χ
T
T
R
eleased
ON
NOR
M
R
elease
d
d
R
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B
ASET
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FF
ER
11.Repeat ste
switch.
TION
12.SetthePOLARITY
thespot cule
t
hespot
cule
M
V
movestotheupper
.
13.Set
movestot
.
ertical
an
14.Installthedio
p 10
t h
ePOLARITY
he lower
d
H
orizontal
usingthe h
switchto
right
switchto+(ΝΡΝ
leftcor
Sensitivity
dead
ap
orizontal
corneroftheCR
neroftheCRTgrati-
ter(Tektronix
-(
coarse
ΡΝΡ).
) .Note
N
oteth
T
P
art
POSI-
at
grati-
t h
at
Νο
2-
9
.
Operating
Instructions-Type576
EMENES EMENNE
EMMMENNONN NOMMEEMENE NERNERNMON
NOWNSENNEW MMMOMMEOMM
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1/1
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.Display
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heVERTICAL
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andHO
into
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15.Installα1kΩ,1/2
ter
.
V
f
orαΙkΩ
RIZONTAL
theright-
dard
mA/D
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ENE
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switches
h
andset
TestFixture
watt
resistor
iv
Hor
of
Ver
izontal
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tical
DIV
PER
οιν
PER
ρΕ
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sing
varioussettings
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.
accessory
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inthedio
R
τ
mA
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50
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Ρ
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R
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connec-
de adap-
Α
ii
Fi
g.2-7
.Type576
stalledforsafeoperation
StandardTestFixture
.
wit
h
pr
otective
box
in-
16.Setthe
turnthe VARIABLE
α
trace
appearsdiagonally
17.Turnthe thatasthe the
linedecreases switchcounterclockwise thattheslopeincreases.Also
readout ch VER
TICALswitch.Resetthe
18
.Rep withintheCO slopeofthetrace VER
TICALswitch.Resetthe HOR
VCOLLE
19.P
ress
trace
reducestoα
LEF
T-O
FF-R
IG
CO
LLE
CTO
across
VER
TICALswitchcloc
verticaldeflection
factor
(seeFig.2-6).Turn
from
t he1
notethatt
angesinaccordance withth
VER
eat
ste
p 17
u
singth
LLE
CTORrangeoftheswitch.The change
willbetheinverseofwhatitwasforth
CTOR.
theZERObutton
s
p
otint
he lower graticule.Thisspotdenotesthe p the
vertical
.
bu
tton
P
ress
20
.
reducestoα
ule.Thepositionofthisspot
gratic d
eflection
button
CA
L
21
.Pressthe
V
ARIA
BLE
wise
.
Note
originating cule
.Releasethe
h
an
d
orizontal
theCAL button
s
p
otinthe
bothvertically
am
.
Note
upper
andhorizontally
.
DISPLAY
COLLECTO
thatth
edisplayhas
INVERT
RS
UPPLYcontrol
fromthe upperright
DISPLAY
NVERTbutton
I
HTswitchto
S
UPPLYcontroluntil
R
heCRT.
t
R
IGHT
kwise and
decreasestheslope
t heVER
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he
e p
and
PER
VER
ositionofthe
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e
IZONTALswitc
H
O
R
IZONTALswitc
.Note
t hatt
left
cornerofthe
he d
oint of zerodeflection
p
lifiers
.ReleasetheZERO
thatthediagonal
right
corneroftheCRT
indicates10divisions
.Releasethe
button
andturnt
counterclock-
been
inverted
corner
ofthe
andis
CRT
.
d
an
note
of
TICA
L
note
TDIV
h
in
e
h to
1
iagonal
CRT
of
trace
of
e
h
now
grati-
Collector
22.Turn
range
.
Note
1500
p ositions,
23.Wh
CO
LLE
CTO
t
hediagonal
theyellow
.
24.Setthefollowing
ΜΑΧ
V
ARIA
S
UPPL
LEF
T-O
25.Installthe p
ture asshown
26.Close
LEF
T-O
FF-R
light
turns
Thered
appearatt
F
ixture
27.Turn cloc
k
trol
tingthattheCollector
Supply
he
MAX
t
atwhentheswitchis inthe 75,
t
h
iletheyellow
RS
line
lightison,the
PEAKVOLTS
t
he yellow
lightcoιrιeson
lightison,
UPPLYcontrol
obtainedin
ste
CollectorSupply
fully
p 16 does not a
Type576
PEAKVOLTS
BLE
CO
LLE
CTO
R
Y
FF-RIGH
IG
off
light
T O
rotective
2-7
inFig
.
.
h e
lidof
t
HT
d
t
an
the protective
switchtoRIGHT
heredlighttu
W
ARNING
indicatesthatdan
e
collector
h
terminalsoft
box
on
rnson.
.
t
wise
heVARIA .
Note
BLE
thatthe
Supplyhas
CO
LLE
diagonal
been
switc
hth
roug
hout
350
.
.
Note
ear.Wh
BLE
turntheVARIA
clockwise
pp
isdisabled.
controls
:
75 F
ully
counterclockwise
FF
theStandardTestFix-
an
d
setth
box
.Notethatthe yellow
gerous
he Standard
CTO
trace
voltages
RS
may Test
UPPLYcon-
appears
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enabled.
its
and
that
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2-10
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Setthe
28
.
MAX VARIA
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e
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following
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Y
p
r
otective
VOLTS
29.TurntheVARIA trol untilthe d graticule.Pull and
set
theswitchis
it
iagonal outonthePEAKPO
to
220
turne SERIESRESISTO is
increased.
30.AllowtheMAX PEAKPO switchto75.
r
emainsat220
change
WERWATTS
.
31.Setthe
ΜΑΧ
Notethatt
an
following
PEAK
PEAKPO
LEF
T-O
FF-RIGH
32
.Removethe
p
laceitwith α
cathodeisconnecte
33.Setthe
turn
t
h
e V
ARIA
.Notethedisplayoft
wise
hedio d
of
t
34.Set
to
-(ΡΝ
teristic
e.(seeFig.2-8)
th
e
CO
Ρ
) .
Note
ofthediode
ιΟιιΝ
MENEEMENNE
NEENEMENNE
MENNEENMEN
NNENEEMMON
No
MENNEENFAME NNEMEMEMNE
Ty
p
CTO
R
box
may
be
BLE
trace
.Notethatt h
d
t
hrough
RSdecreaseast
PEAK
switchto
e
h
d
t
hatt
heS
Ty
p
VOLTS
WERWATTS
T
dio
the
to
FF-R
LLE
CO
h
.
CTO
Fig
C;---
-----
E
=--ANN
fromthediodea
d
emitter
eforward
RS
.
resistor
silicon
d
LEF
T-O
BLE
LLE
thedisplay
(see
11
---
e
576
controls to
:
15 F
ully
Counterclock
emovedifdesired.)
r
CO
LLE
CTO
R S
UPPLYco
reachesthecenteroft
WERWATTS
e d
iagonal
its
r
he
maximumpea
trace lengthens
ange.Also
notethatthe
maximumpeakpower
VOLTS
become
switc
h an
interloc
kpower
ERIESRESISTORS
e
576
controls to
:
15 0
.1
O
FF
da
p
ter
e.Alignth
IGHT
CTO
UPPL
ofthe
2-8)
ediodesothatits
terminal
switchtoRIG
RSUPPL
.
~ι
voltage
Y
reverse
.
Y
POLAR
control
aracteristic
ch
ITY
voltagecharac-
ν Ε
DIV
PER
Η Ο
R
DIV
PER
Ρ
DIV
he
switc
kedan
values
and
H
switc
ΤπΑ
4
Ρ
Ε
ER
,0
wise
n
CRT
as
d
t
he
value
re-
T
an
clock-
100
In
v
»
Ά
-
h
d
d
h
35.Setthe
P
OLARITY
MOD
Note
acteristichas conductedby
following
E
thatthedisplayoftheforwar
become
t
hediod
36.TurntheVARIA
trol
counterclockwise
d
io
de c
h
aracteristic
Set
t h e
37
.
38.Adj
minimum
tt
VER
H
V
VARIA
MOD
LEF
MONEEMIENNE
following
TICA
NTAL
ORIZO
erticalPOSITIO
BLE
TORS
UPPL
E
T-O
FF-RIGHT
ustth
trace
width
00000000
MMENEINNEME
NEEMENNEE
EMM OWN
F
2-9.Ad
ig
.
39.Set
justment
thefollowi
VER
TIC
A
V
erticalPOSITIO
V
ARIA
BLE
TO
RSUPPL
MOD
E
L
Type576
α
s
e
andt
.Notethatt
.
L
N
CO
LLE
Y
e L
OOPING
(see
ofLOO
ngTyp
N
CO
LLE
Y
Operating
+
hesp
p
ot.T
h
evoltage
BLE
CO
Type576
C-Fully
NO
MPEN
CO
2-9)
Fig
.
PIN
G
CO
e
576
5
C-
Fu
AC
Instructions-Type
controlsto:
(
ΝΡΝ
)
voltagediodechar-
d
d
icates
ot
in
acrossit.
LLE
CTO
RSUPPL
he
spot
traces
to
controls
:
μ,A
VCOLLE
p
R
LEF
lay
Clock
M
T
CTO
Centere
wise
SATIONcontrol
.
MPENSATI
controlsto
mA
lly
h
centere
Countercloc
ON
:
d
the
current
Y
outthe
R
d
ν
Ε
R
i
πΑ
DIV
PER
ό
R
2
DIV
PER
Τ
5ο
Ε
11
Ε
β
9πι~Ε,
PER
L0
DIV
control
k
wise
576
con-
for
V
Α
η
.
F
ig
.
signa
2S
.Display
ldi
ode
o
f forwar
d
andreverse
bias
characteristicsofa
FF-RIGH
T
O
FF
LEF
T-O
.
2-
11
O
per
ating
Instructions-Type
40
.Removethe diodefromt
p
laceitwit
its
cathodeisconnectedtothe
41.Setthe turntheVARIA wise
r
eversech
h α8volt
LEF
T-O
BLECOLLE
.Note
t hatt
he d
aracteristicsoftheZener
Ζ
one,Breakdown
V
_oltag_e
loom
Zener
diode.
FF-RIGHT
is
p
lay
JIM
576
hediode adapter
Alignthediodesoth
emitter
terminal
switchto
CTORS
shows
UPPLYcontrol
bot
hthe forwa
diode
(seeFig.2-10)
0
.
RIGHT
Ε
Τ
D
IV
PER
Η Ο
R
DIV PER
Τ
ΕΡ
and
and
clock-
r
d and
.
WI
Α
2
»
Α
re-
at
H
ORIZΧ10
changedtoindicatethe10
ingthe
thecharacteristicwhich
.NotethatPERHORIZ DIVreadou
times multiplication.By
scale,αmeas
rement
u
was
not
can
quite vertical lineoftheCRTgraticule valuewhen addedtot hea
:(Α)
NONE
ENNEE
__
ι
1
ι
1
Ι
1
Ι
ιιιιι
ι
~~
pproximate
ιιιι
tvaluehas
be
madeofthat
offsettothecenter
(seeFig.2-11C).T
value
(or
subratcte
Ε
D
Ιν
ΡΕΛ
Η
Ο
R
ο
IV
PER
Τ
ΡΑΕ
9m
PER DIV
expand-
partof
h
5
m
A
10
»
Ιιτι0Κ
is
d
OMENS
F
ig.2-10
.Display
LARITY
Display
42.Set
H
switch
Offset
R
O
POLARITY
Note
t
hedisplayofthereverse
t
heZen
erdio
43.Positionthe
c
ule
wit
h t
.
Setthe
44
H
RIZΧ10.PresstheZERObutton and,
O
F
I
zontal
onth
osition
p
Z
ER
NE
e
centerver
represents
button
O
switchto
45.Turn
position
th
li
n
LINE
clockwise,
e
d
isplayiswithin±0.5
e
(see
VA belowthe HORIZDIVr
t
he
kdown
brea
the
examplesh breakdown volts
.
46.Setthe DISPLAY
o
f
Z
eneτdiodeΙvs.V
set
to
AC
.
an
d
M
agnifier
e
th
following
IZONTA
Type
576
L
2VCO
-(
e
.
d
displaytothecenter oftheCRTgrati-
h
everticalPOSITIO
DISPLAYOFF
P
OSITIO
tical
the
andsetthe
H
ORIZΧ1
.
t heCENT
until
N
N
switch(see
SET
control,
a
d
lineoftheCRTgraticule.This
zero
offsetposition.Release
DISPLAY
ERLINEVA
t h e
Zener
divisionsofthe
F
ig.2-11Β)
LUE
.Note
switchwhic
t h
e nu
h appearsintheblue
wordDIV.ThisnumbermultipliedbythePER
eadout
voltageis4
value
givesthe
voltageoft h
own
inFig.2-11,theappr
is
Zener
d ivisions
OFFSETSelectorswitchto
PE
R
DIV
c
h
aracteristic
controlsto:
LLE
ΡΝΡ
)
voltage
characteristic
Selector
ju
st
the sp
OFFSET
LUE
switchfromthe
R
CTO
Fig
.
2-11Α).
switchto
using
otsothat
wit
thehori-
Selector
breakdownportion of
centerver
mberontheCENT
window
roximate
app
e
.
F
d
io
d
or
he
t
valueof
d
io
oximateZener
times
2V/division
Ι0Ο
h PO-
spot
tical
d
Κ
of
it is
the
ER-
e = 8
in
0
1(Β)
1
ι ι
Ι
ι
Ι
Ι
Ι
(C)
ι Ι
ι
1
Ι
Ι
F--
Ι ι
Ι
ιι
F
ig.2-11
.Displays
u
sing
the DIS
switches,(Α
and
V
ALUEswitch
)
C
ENTERLINE
toΗΟRΙΖΧ10.
if
t h
e approximate
p
roduces
α
more
age.Inthe
r
ι
~~
o
f
m
PLA
D
IS
set
easurement
Y
OFFSETSelector
PLA
Y
FFSET
O
E
V
A
LU
to4;
(C)DIS
value
exact
measurementofthebreakdown
exampleshown
rvVR
Ε
Τ
DIV
Η
PER
ο
R
ι
ΡΕ
.
Τ
β
oR
PER
PER DIV
Ε
Ρ
b
reak
Τ
DIV
Ρ
ΕΛ Η
RΟ[~
Ζ
DIV
ΡΕ
Ε
β
PE DIV
down
R
Ρ
R
ι
.
ιιιι
o
f
Z
a
n
d
Selector
ene
τ
C
ENTERLINE
switchsettoΗΟ
switchsetto0;(Β)CENTER
Y
PLA
OFFSETSelector
t
was
greater
inFig.2-11,
hant heactual
400mVsh
»
Α
2
ν
50
»
Α
Itlt0k
ε
MA
2π0
Ιη
ν
5ο »
Α
Ιι00ιε
voltage
VALUE
RΙΖΧ
LINE
switchset
value)
volt-
ould
be
1
2-12
Switc
t
a
dded
for
alsobecarrie
cation
StepGenerator
47.Set
he approximate
to
e
Zener
th
.
d
e
t
h
DISPLAYOFF
Selector
CENT
ERLINE
V
erticalPOSITIO
P
OLARITY
V
ARIA
BLECOLLE
TO
RSUPPL
LEF
T-O
48
.Remove universal 013-0098-00)
49
sistor test
transistor
.
.PlaceanΝΡΝ
socketoft
50.Setthe turntheVARIA tilthe peak
51
theCRT.
on greaterthe
collector-emitter
Tur
ntheAMPLITUDE
.
Note
collector
TUDEforthe
noticeable
stepinthedisplay
M
voltage
out
using
following
SET
FF-RIGH
t
h
e d
heuniversal
LEF
T-O
BLE
thatthe
current
minimum
estimate, hed
of
t
yieldingαvalueof8
iode.
The
verticaldisplay offset
e
controls
p
576
NORM
+(
F
(OFF)
h
centere
ΝΡΝ
)
ully
Counterclockwise
VA
N
Ty
LUE0
C-
Y
T O
iodeadapteran
a d
silicon
FF
d re
apter
(Tektronix
transistorintothe
transistoradap
FF-RIGHT
CO
LLE
switchto
CTO
RSUPPLYclockwise
voltageisabout10volts
switchuntilαste
g r
eate
rthe
stepamplitude,the
(seeFig.2-12).SettheAMPL
stepamplitudewhich prod
.
:
same
and
to
:
d
p
laceitwit
process
magnifi-
P
art
right
ter
.
RIGHT
papp
Ρ
Εν
R
7
DIV PER
Η Ο
R
Ι
οιν
PER
7
Ρ
β
9m
PER
DIV
.
uces
ΜΑ
?
μ
100
ca
h
Νο
tran-
and
ears
ο
Α
.4
h
t
un-
n
;IC
ι
~(Α)
ί
Ι
Ι Ι
ι
Ι
e
.
;(Β)
i
Ι
F
ig.2-13.(Α)ICvs
;(Β
step
I-
α
53
he disp
t
forten
54.Setthe
H
ORIZONTALswitchto
p
lay
t
hecollecto
55.Set
th
e
.
base-emitter
vs
56.Set
ZONTALswitchto
tor
(seeFig.2-15)
V
ςε
vs
.
1=ii~~~-
"
r
m
710.a
~~iy
J
im
_
.
IC
νVάε
.
VICE
)ICvs.VBE
.
Set
for10stepsoflease
t heHOR
layofthecollector
different
values of
VER
ofthe basecurrent,
-emitter
r
theHORIZONTA
disp
layofbase
voltage
the
VER
currentvs.
base-current,
.
OperatingInstructions-Type576
ΙΒ@50
γ
~YY~YWWY
r
ι
f
or10stepsofbase
( . .
ιΒ@50μΑ/sμΑ
ΙΑ /S
"
Ι
~
/s,
ep
;
currentat50μΑper
currentat50μΑper
IZONTALswitc
currentvs.
h to.1VBASE.Note
base-emitter
basecurrent(seeFig.2-13Β)
TICALswitchto
1VCO
one
ste
voltage
(see
L
current,
one
(seeFig.2-14Β)
TICALswitchto
EPGEN
ST
one
STEPGEN
LLE
CTOR.Note
p
p
er
vertical
F
2-14
ig
.
Α).
switchto
ste
.1
p p
er
verticaldivision,
V
.
5
mA
an
.Notethedisplayofcollec-
stepperhorizontal division
5
R
Τ
IRA
DIV
MR
Ο
R
Ι
DIV
PER
s
Τ
50
Ε Ρ
j&
A
β
PER
DIV
Ρ
ε
R
τ
WA
DIV
ΡΕΛ
Η
ηη
R
ι
00
Ιιπν
i
DIV
PER
s
τ
50
υΑ
β
ο
R
9
.
ιΓhη
PER DIV
step
voltage
.
andthe
the d
division,vs.
B
ase
.Note
d th
eHORI-
.
is-
1
F
ig.2-12.Collector currentvs.
settingsof
su
ret hePEAKPO
p
owerdissipation
he
t forten
Β
heA
MPLITUDE
t
52.Turn
heNUM
t
BEROF
WERWATTS
rating
displayofcollectorcur
differentvalues ofbase
Collector-Emittervoltage
switch.
STEPSswitchclockwise.B
switchis
thetransistor
of
rentvs.
current
being
collector-emitter
(seeFig.2-13Α) .
set
withinth
used
for
various
.
voltage
Note
e
576
57.SetthefollowingTyp
H
RATE
Note
ORIZONTA
that
e e
L
he
step
t
rateisslower
controlsto:
VCOLLE
.5
Χ
t hanthenormal
CTO
R
rate
2-1
.
3
O
perating
Instructions-Type
ι ι
1
ι
Ι
F--
Fig.
2-14.(Α)ΙΒvs
ΙΒ@50μΑper
Ιςν$
""""""""""
EMOMMENNOM
Fi
g.2-15
. 1
ς
58
.PresstheNO
R
Ebu
AT
normal
tton
rate
576
Έ
Ρ
DIV
PER
Η
ο
Ζ
DIV
PER
Ε
Ρ
F
-~
PER
DIV
ΙΒ vs
(Α)
.
V
ςΕ
Ε
DIV
PER
Μ
ο
R
DIV
ΡΕ R
s
ό
(
Β
)
Vs-
1
13
.VςΕ,Ιη@50μΑp
division
.
. Ι
Β
MEMEMEM
1g,ΙΒ@50μΑ
vs
.
RM
ι
V
gE
perdivision
RATE
er
button
division;(
.
andt
β
9ER
PER
DI
Β
)ΙΒvs
DIV
PER
Μ Ο
R
ΡΕ
Ρ
β
Ελ
ο
h
en
.Notethatthesteprateisfasterthant
.
IV
sweep,asw
curves
off
.
NORM 300μs
supplyisin
tton
.Note
( ιsan
peakof
N
ormalMo
sweep,ratherthanatthe
hen
t h
eNO
RM
FAMIL
Y
button
.Press
NGLE
button
isdis
p
olsto:
cont
REP
ON
the
control
that
d
t
he80μsbuttons
henormal
t
he
collector
t
(seeFig.2-1
ι
ON
Λ
is
p
layedan
DCmode
may
be
h
eduration
t
de and
mo
sweep,
6B)
.
έ
DIV
PFR
Ο
R
2
ν
ΡΕ
R
Ε
Ρ
~m
DIV PER
resse
d t
neces-
.Note
C~
ΤηΑ
51
ΡΑ
100
wit
d
,
h
en
an
of
t h
de
ΤηΑ
DIV PER
Η Ο
R
1
Ζ
DIV
Ρς
R
50
Ε
Ρ
υΑ
β
PER
100
DIV
it
α
d
e h
atthe peakofeachcollector
beginning RATE
buttonisp
60
.
n
.Note
agai single
family
th
e
StepGenerator
50
ρΑ
61.Set ST
R
PULSEDSTEP
N
ote
t
hateachstepisint
of
P
ressthe
the
EP
AT
E
that
that
FAMIL
ofcharacteristic
the
eachcollector
us
hed.
SING
LESTEP
eachtime
turns
following
Type576
Y
S
collector
he formofαpulse.(SeeFig.2-16Α.)
(ReadjustmentoftheINTENSITY
sary
1π00
so
ρΑ
V
V
gE,
.
5 mA
R
ρΑ
100
h
e
2Χ
t
.)
62
.Pressthe 80 μs bu
each p
ulsedstepis
63
.Press
that
t heCollector
stepsare
α dur
ationasobserve
;(Α)
Ι
1 F__
ι
__
Β
i (
I-ΙEMMMEEMENE
-
'
boththe
occurringatt
MENEM
MEN
MMMMMMMMMM
MENNEN
"
"""""""
)
MENEM
MEMMEMNEEM
reduced.
300
Supplyisin
he
in
step61
d
he
59
.Press
N
otethatthestep
4
2-
1
bot
hthe 2
ΧRATEand.5
rateisnormal,
bu
t thatthe
ΧRAT
Ebu
steps
ttons
occur
.
Fig.
2-16.300μs .
mode
PULSEDSTEPS,(Α)
DCmode;(Β)Norma
l
5
1
64.Setthe
an
d
r
emovethe
StandardTest
Installthe
universalFET
013-0099-00)
Ν-ch
anneljunctionFET
adapter
.
65.Setthe INTENSITY
VER
TICA
VARIA
PPL
SU
MPL
A
IT
STEPS
66.Setthe
tur
nth
e
VARIA
slowly
d
clockwise
rain-source
.
SMONNO
Type
576
LEF
universal
Fixture.(Leavethe onthe
StandardTest
into
following
Type576
L
BLE
CO
LLE
CTO
Y
E
UD
LEF
T-O
FF-RIGHT
BLE
CO
.
Note
thedisplay
voltage
W=Ζ
with
voltage
~
T-O
FF-RIGHTswitchtoOFF
transistor
adap
ter
transistorintheadap
adap
ter
(TektronixPartΝο.
t h e
Fixture
rig
h t
an
test
socketofthe
controlsto:
Visible
Display
mA
RF
ully
Counterclockwise
.05
V
P
resse
d
switchtoRIGHT
LLE
CTO
R S
UPPL
ofdraincurrentvs.
stepsof0
Μ
fromth
ter)
d
p
lace
an
an
Y
control
.05V/ste
ρ
PER
Ή
!
ν
il
PER
Ρ~V
Operating
VER
TICA
L
e
.
CO
A
MPLITUD
NUMBER
P
OLARITYINVER
Set
t heAMPLITUDE
LLE
CTO
R S
E
OFSTEP
S T
switc
UPPLYcontrol
Instructions-Type576
mA
Current 5
R
elease
h andtheVA
for
similartoFig.2-18Α.
ivision
70
.Notethe β
thevertical
exam
e
p
h a
family,th
For
thefourt
or
perd
gn
u
divisions
β
of
le,th
between
he
device
t
ereisappr
inthatregion
oximately0.9
ndfifthsteps showninFig.2-18Α.Theβofthe
rea
twocu
devicewhenoperatedinthisregion
imately0.9 measurementofβ
d
current
p
71
MULTcontrolto4
.PresstheOFFSETΑΙD
between
(200)
or
180.To makeαmore
,thedifferenceinboth
t h e
fourthandfifthsteps shoul
button
.Notethattheoffsetcurr addedtotheStepGeneratorou tput sothatthezero nowatt helevelofthefourthste
72
.Press theST
current TUDE
amplitu
per
ste
switch.Chec
e
per
d
73.Setthe
VER
T
Χ1and
clockwise
untilthefirststepis
center horizontal
EP
MUL
p
is
now
1/10oft
kthePER
p
.
(See
ste
Fig.2-18Β.)
DISPLAYOFFSE turn
theCENT
line
.
p
disp
T.1Χ
b hevalue STEPreadout
T
E
R
LINEVA
with
in
Steps
d
R IA
α
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dout
rvesoft
of
.Bymeasuring
he
d
isplayed
canbedetermined
is,th
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erefore,
between
accurate
collector
andset
andbase
d be
t heOFFSE ent has
layed.
u
tton
.Note
thatthe
setbyt heA
forthe
Selector
switc
LUE
±0
.5divisionoft
BLE
curves
approx-
less
.
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stepis
MPL
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.
T
I-
h e
1
F
ig.2-17.DisplayofFETcommon-so
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vs
.
V
S
for10steps
a
pp
liedtothe tothegate enhan
cement
SING
LE
ST
obtainedwithzero
67
.Pressth
d
isplayoft h
of gate
voltageat0
gate
(see
Fig.2-17).Sincetheste
are
positive-going,thecurvesdisplaye mode op
EP
erationoftheFET.(P
F
AMILY voltsonthegate
e
P
OLARITYINVERTbu
edep
letion
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button
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of
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.05
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.
to locatethecurve
.)
tton
and
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o
p
of
t
h
Fig.2-17).(Press SINGLE STEPFAMILYbutton
biascu
rve
.)
68.Set
FF
O
h
wit transistor
69.Setthefollowing
.Remove
e
t
h
stillinit
t heType576
the
universal
universal
t r
ansistor
.)
Type576
LEF FE
T
T-O
FF-RIGHT
test
adap
test
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controls to
ter
andrep
ter
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ap
:
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ves
ps a
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e
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r
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e
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forzer
switchto
lace
(wit
hthe
:
ID
lie
d
(see
o
it
74.Set
theDISPLAY VΕRΤΧ10.Notethatthoug asitwasinstep70, (ΔΙς
and
This level
atthe
A[ B)
allows ofthefourt
fourthste
75.Setthe VER
TICA
thec
is
less
forαmore
h
step(see
p
now
following
L
DISPLAYOFF
Selector
FFSET
UDE
IT
OFSTEPS
MUL
AMPL
e
NUMBER
O STEPΜULT
76.Turn
begins to
t heOFFSETMULTcontroluntilαste
appearont heCRT.Notethemultiplier theOFFSETMULTcontrol.This PLITUDE ageofthetransistor
switchsettingisthebase-to-emitter
.
OFFSET
h
h
angeincollector
betweenthe
accurate
Fig
measures
e
Ty
p
SET
T
e
!3per
t
h
fourthan
measurement
2-18C)
.
at
abo
controls to
576
mA
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.05
V
1
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elease
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switchto
ivisionisstill
andbase
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t
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ofβatthe
.Theβofthe
ut0
.8
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)
d
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p
value
AM-
200
j
ust
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on
2-1
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e
Operating
Instructions-Ty
576
p
M
ONES
MEN MOM
ME
M
ME
MEMIMEM
601A
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ONEEMENOME EMENESEEME
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Commo
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EN
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79.Set
ST
EP
banana
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)Terminal
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Α
(
NORM
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TEPGEN
S
FAMIL
plugsoneachen
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connector
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the
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h
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r
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amily
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.Tak
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t
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e
e
576
ON
'
amily
r
r
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r
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it
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PE
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DIV
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EMITTER
the
mA
20
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100
~
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wit
ST EMIT
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h
e
h
EP
1
Fig (Β) (C)ί0Χmagnificationofvertical
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t
base
2-
.
2-18
ff
O
77.Set A
O
78.Note
h
e
emitter
(see
1
6
.
Measurementofβ
setting
o
f
displ
e
following
t
h
MPLITUDE
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E
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thedisplayofthe characteristic
groundedan
Fig.2-19Α)
o
f
ay
transistor,(Α)Coarse
and1Χmultiplicatio
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p
d
t
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.
display
576
20μ.A ZERO
e
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.
controls to
o
steps
measurement
f
step
amplitude
:
curves
lie
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pp
LEF
T-O
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; ;
Terminal
Noteαdisplay
81.Set
VER
the
TICA
Selector
following
MODE VARIA
wit
h
the
d
to
R
emove
ST
BLE
TO
R S
EP
FAMIL
epatchcord.
t
h
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similartothat
Ty
L
LLE
CO
C-
Y
Y
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seeninstep78
e
576
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p
ηΑ
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lly
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O
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Counterclockwise
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ITT
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r
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82.Tu
trol
clockwiseand
rentwiththebase terminal
83.Set
note
t h
e disp
terminalshortedto
84.Setthe VER
A
MPLITUDE
Terminal
STEPFAMILY
TurntheVARIA clockwise collector-emitter emitterofthetransistor
85.SetthefollowingType STEPFAMILY
Terminal
R
econnectthe p PUTconnectorandthe nector
.
86.Set
d
isplay
similarto
This
G
ENER
C
R
T
TheCRTintheType576has
internalgr
sions,
each d
culeiscontrolle tectivesh
p
lay are
t
he
fiber-optic
curing
screwand
Α
blue
ofth
edisplaywhenthe
may
be
slidingthefilter
andthe
R
ofthe
d
bezel
eadout
The
readout
fiber-opticdisplays
isplays
e
t
h
V
ARIA
BLE
notethedisplayofemitter
open
t heTerminal
layofemitter
followingType
TICA
L
Selector
andnoteth
voltage
Selector
theST
that
completesthefirst-time
LOPER
A
aticule.T
ivision
d bytheGR
ields
for
t heCRTandthe
fittedtothe
rea
dout disp
pulloutont
filterhasbeen
installed(or
from
frame
locatedtothe
show
numbers
Selector
g r
ound.
BLE
CO
edisplayofcollectorcurrentvs
with
(seeFig.2-1
atchcordbetween
ΕΧΤBASEOREMIT
EP
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see
nin
ATI
he graticuleis10 d
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ATIC
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providedtoimp
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removed)
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.
andth
and un
CO
LLE
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RS
.
switchtoSHORTa
lea
kage
current
576
controlsto:
mA
5
mA
EM
ITTERT
G
EN
ON
LLE
CTORS
current
9B)
576
controls to
O
FF
EM
ITTERT
(ORΕΧΤ
Y
Ι
L
buttonto
.
step84
operation
NGINFORM
α
ULE1LLUM
fiber-optic readoutdis-
lay.Toremove,
he b
ottomoft
lightisintense.This
byremovingthe
rightoft heCRTismad
eir
titles_Thefi
its(5mA,
wit
ERM
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stepsapp
.
:
ERM )
theSTEPGEN
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ATIO
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p
r
manently
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rovethe
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2V,etc.)t h
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liedtot
INPUT
and
by 12divi-
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OPEN
OU
note
N
etc
e grati-
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.
contrast
filter
bezel
e up
er-optic
b
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con-
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se-
and
T-
o-
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values ofwhich tings.Thetitlesarewordsprintedonthe shieldattachedtothe acteristicsoftheCRT
d
isplayisrelated(PER
minationofthe trolle
notedthatastheillumination ofthe
fiber-opticdisplayofβorg
theother
Intensity
he
T
h
e
t
I
NTENSITY
t hatthedisplayiseasily probablyrequire
ularcaresh p
layed.Αhighintensity
causi
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α
d
e
ng p
F
ocus
T
he focusoft heCR
CUS
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isplay
Positioning
Thepositionoft
vertically controls:thevertical
t
he P
andthe
T
heposition
ofthe disp P
OSITIONswitc
p
ositioning
uous
rangeofgreaterthan5
sh
oul
d notbeused topositionthe
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izontallyusingthe
r
angesoftheposition
T
he POLAR
αdisplay
tion
convenient
vice,
α
TheDISPLAYOFFSET set (orpositioning)oft h zontally.These
measurement
whichh
PLAYOFFSETSelector
play TERLINE
magnified
WhentheDISPLAYOFFSET of
itsMAGNIFIERpositions,
available
he
d by
t
fiber-opticdisplays
intensityoft
ouldbe
e rmanen
control.This
efi
d
n
ition
andhorizontally,iscontrolled
OLARITY
DISPLAYINVER
lay
.Eac
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(located
ΡΝΡdeviceorw
been
as
willbeoffset
V
A
con
.
Operating
areαfunction of
bezel.These
displaytowhicheachfiber-optic
VERTDI
titles
andthefiber-opticdiplaysiscon-
RE
ADOUTILLUMcontrol.Itsh
mperdivision turns
he
d
isplay
control.T
readj
tdamagetotheCRT.
controlshould
.
switc
controlsprovide coarse
h
bot
h p
h FINE
h
is
visible
ustment
exercisedw
spot
Tdisplayiscontrolle
he disp
layont h
andhorizontalPOSITIONcontrols,
h
,
t
heDISPLAYOFF
T,ZEROandCAL
vertically
r
ovides 5-division
P
OSITIO
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SET
d
isplayismagnifiedeither
DISPLAY
controls
ITY
switc
h p
ositionsthezero
bypressingtheZERObutton)toαposi-
formaking
henmak
controlspr
edisplay
controls
or topositionparticularportionsofαdisplay,
magnified,ont
LUE
d
itions,
may
switc
vertically
switc
h p
10
divisionsofoffset
Instructions--
front-panel
fiber-opticdisplay
wordsind
V,PERSTEP
rea
doutisreduced,
.
t
heCRT
on
control
but
n
for
d ifferent
hen αspotis
may
burn
be adjustedforoptimu
andhorizo
N
controls
OFFSET
are increased10
measurements
inganAC
eitherver
be
usedeithertomake α
heCRTgr
hdetermi
or h
orizontally
rovidestheoffset
Selector
100divisionsof
is
shouldbeadju
overly
ot
d
is
he
t
C
eCRTg
by
buttons
fine
and
tally
n
incremen
control
.The
position
zeroreference
be usedfoFth
may
vertically
Selector
signalpoint of
measurement
ovide
calibratedoff-
ticallyorhori-
aticule.TheDIS-
neswhether
an
switchis
Type
576
control
icatethech
,
cont
brig
p
lays
T
R
d bytheFO-
r
aticule,
four
SET
p
.
E
ts
h
as
switch,the
times
d
.
are
set-
etc.).
Illu-
ouldbe
t h
off before
olle
r
d by
stedso
h t.It
will
.Partic-
being
d
ph
osphor
bot
sets
con
trols
.
ning
ositio
achcoarse
dis
p
of
lay
α
contin-
controls
offthe
h
or-
or .
ΝΡΝ
de-
.
thedis-
t
h
e
CEN-
Und
er
un-
available
set
to
o
offset
are
ar-
e
is-
m
h
of
is
.
ne
2-17
Op
erating
Instructions-Type576
Wh
en
making
SET
controls,
theCENT cente
(vertical
of turnedcounterclockwise,
tically of switch of d linehas
h
as
be
multi p
TheZERO
tioning
d
er
tor switch
zero
α
spot
being
amplifiers.Wit
trols
CRT theDISPLAY
HOR
vertical
LINE
racy of reference
controls)tot used. of
DISPLAY
FIER
The
bration conditions
N
O
erence signal
p
lay on t
he p
t
he spot
accuracy termined.When
set spotshoul
offset)ort
suming calibration SET
Any centerline,
1°/
ο
ERLINE
r
(horizontal
line
offset)oft
t
hedisp
or h
orizontally
the
CENT
appear
ivisions
been
been
magnified,
liedby10.
t
he zero reference point
normaloperating
set
reference
indicates
measuredby
may
be used to p
graticule
IZ,
t
he zero reference p
graticule
VA
LUE
theCENT
s
p
For
maximum
this
zero referencepoint
OFFSETSelector switchinoneofitsMAGNI-
p
ositions
CALbuttonprovi
of
t
hentheCAL
RM)
w
s
potapp
applie
amplifiers
theCRTgraticule
ositionofthis
obtaine of
either
to
d ap
the
c
Selector switchineit
epartureofthecalibration
d
when
erdivisioninthedisplay
p
measurement
α
he
CRT
t
VA
LUE
offset)ort
e
h
windowisat
lay.As
the
ot
he disp
(DISPLAY
d to
calibrationofthedisplay
he h
zero
hec
theCENT
along
ERLINE
ing
offset
buttonprovi
toNO
t
hthe b
w
OFFSET
switch
he app
.
VER
pear
VA
in theblue
vertical
from
the
conditions
RM)when
spot
appears
he point
thevertical
u
hichmakes
line,
respectively,towhic
setting
ERL
I
NE
s
hould bead
ropriate
accuracyofmeasurement,
lay
amplifiers
ears
on
bot
hthe
whichshouldcause
bothvertically
s
pot
hentheZER
d
w
the
DISPLAY
T
or
on
orizontal reference point
k s
hould bemade
t
h
checkis
is
using
theDISPLAY
graticule
becomesαwindow
switchisset
he h
orizontal centerline
t
he ze
ERLINE
the
window
t
he disp
lay
LUE
switch,
window
centerlineort
t
he zero
number
des
on
t heCRTwhere
tton p
osition
Selector switchis
oint
VALUE
j
cen
des α
OFFS ETSelector
button
theCRT.This
vertical
is
com
HOR
thevertical
centerline
her
offset
represents
he h
offset
in theblue
α
convenient
on
theCRT
(DISPLAY
Z
t h
e
ER
O
on
theCRT
and
ressed,
t
measurements
applies.To
usted(using
s
hould
means
ispressed,αcalibration
OFFS ETSelector
IZ,
HOR
made,
he p
t
e
h
s
pot toαpoin
indicates
switchsettings,
terline
for
be
of checking
.Undernormal
an
dth
10 d
an
p
aredwit
O
buttonispressed,
amplifiers
thecalibration
cen
(vertical
isproperly
wit
hth
IZ
X10
reference
representsanerror
.
O
.When
to 0,
thevertical
r
o
signal
portion
VA
LUE
switchis
moves
either
ver­.For each p thenumber
orizontal
line.If t
OFFSET
button
horizontaldisplay
ositioning
set
t
heh
hth
assure
t
theoffset
a
d
ju
switchset
s
potrep
e h
ivisions
h
d
hth
terline
e
DISPLAY
or
osition
on
t
he nu
mber
center-
he disp
window
means
graticule
graticule.This
zero
convenient.If
h
e p
stedwit
orizontal
orizontally.If
e
a
d
s
pot
of
Selec-
ispressed,
signal
tont
VER
to
orizontal
e
ENTER-
C
h
e
accu-
t
t
he zero
ositioning
being
t
he p
osition
hth
he
t
operating
resents
eflection
d
position
can
bede-
switchis
reference
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offset),
j
usted.
O
VERT
from
must
p
.Un-
con-
T
cali-
This
X10
FF-
t h
lay
osi-
h
or o
to
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dis-
of
the
as-
FF-
t h e
of
T
h
e
DISPLAY verting VERT are bothvertically gratic
calibrationreferences spots
e
p
t Selector spot
d
p
vertically
V
ures t
t
is
ments
e
is
O
VER
r
verticaldeflection these
switch switch
vertically
e
cal
switch p from1μΑ
factorisindicatedeitherbyt by
p
switch p
α
C tically.In increasedby TICA
eit t to d AG that
L
.
modeαslight taldisplay.The flectionFactor of
thedisplayontheCRT
button
reversed,
u le
.
If t
he p
osition
ositionsonthegraticule
he POLAR
switch
for
t
he various
etermine ressed,
erticalMeasurement
In
e
h heVER
T controlledby
FFSE
U
sensitivityofthe
Wh
t
rintedin
Wh
URREN
thes
assume
and h
theverticaldimension,
either
collector
output
he
of
TICA
are
made
he
V
erticaldeflection
T
Selector switch and
T
DIVreadout
three
controls
ndernormal
set
toNO
set
toNO
and
en measuring
rovi
d
/divisionto2Α/division.The
p
ositionofthe
blac
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en
t
he
T)
theCR
this
L switc
her
by
t
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he
VER
TICA
etermine
Eth
e
out
put ofthe CollectorSupply
obtaine
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rather
h
is
error
t
.
I
NVER
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button
ispus
he
d
,
thein
causing
thedisplayontheCRTtobe
an
d h
orizontally
controls are centered,t
depend
ITY
switchan
.Fig.2-20
settings
pot positionswh
e
t
h
graticule
orizontally
the
switc
L
.
t
RM RM
t
he
VER
esdeflection
k to d
s
hould
M
OD
E switch
case
1000
h
.
Thevertical
PER
VER
L switch
units
.When
t hanα
error
followingHorizontal
sectio
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and
current
StepGenerator.T
h d
etermine
factor of
he
VER
TICA
therightoftheCRT
to
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op
erating
and
theDISPLAY
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FF),
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display
.
collector
VER
TICA
etermine
coincide.
is
Tdisplay
he
vertical sensitivityofthedisplay
t
times
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2-3
tical
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Deflection
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P
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50ηΑ,5ηΑ
20ηΑ,2ηΑ
100ηΑ,10ηΑ,1
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