BK Precision 1460 User Manual
rr
@
1460
la
SOLID STATE.
TRIGGERED
SWEEP
OSCILLOSCOPE
@BJHAF;9#N
INSTRUCTION MANUAL
FOR
B
TRIGGERED
K/PREC|SION
&
MODEL
SOLID
1460
STATE
SWEEP
oscrLLoscoPE
@3#6F^%N
West
6460
Chicago,
Cortland Street
lllinois
60635
INTRODUCTION
TABLE
OF CONTENTS
Poge
.4
FEATURES
SPECIFICATIONS
CONTROLS
OPERATING
Initiol
Wqvelorm
Cqlibrqted
Cqlibrcted Time
Externql
Z-Axis Input
APPLICATION
Television
Signol
Composite
Sync
VITS
Vectorscope
TELEVISION
Introduction
Tuner
I-F Alignment
Chromq
FM
RECEIVEN
FREQUENCY
PHASE
SQUARE
Introduction
Testing Procedure
Anolyzing
CIRCUIT
Generql
Verticol
Input
Amplifier
Triggering
Phose
Sync
Squore Wqve
Sweep
Gqte Multivibrqtor,
Horizontol
Cqlibrqtion
Power
qnd
INSTRUCTIONS
Storting Procedure
Observqtion
Voltoge Meqsurement ... .
Horizontql
.,
Servicing
Trocing
Video Wqveforms
Pulse Anolysis
(Verticol
ALIGNMENT
Importonce
Swepp Alignment
Alignment
Alignment
ALIGNMENT
MEASUREMENT
MEASUREMENT
WAVE TESTING
the Wovelorms
DESCRIPTION
Amplifier
Circuit
Circuit
Inverter
Seporqtor
Circuit
Amplilier
Voltoge
Supply
INDICATORS
Meosurement
.
Input
.
qnd
Peqk-to-Peck
Anolysis
Intervol.Tesi
Operotion
of Sweep Alignment
Methods
.. .
Signol)
.
....
.
.
OF
AMPLIFIERS .
..
....
Circuit
Attenuqtor
cnd
Limiter
ond
Circuits
Shoping Circuit
Miller
Circuit
Circuit
Circuit
Circuit
Integroting
Voltqge Recdings
Circuit ond Hold
. . ..
OfI
......
Circuit
t7
20
20
20
.. 20
23
24
25
25
26
27
28
28
28
29
33
33
33
33
33
34
34
34
34
34
. .
34
35
35
35
4
5
6
8
8
I
l0
ll
ll
t2
t2
t2
l3
l3
l5
l5
MAINTENANCE
Housing
Grqticule
Scole Illuminotion
CRT Positioning
Cleoning
DC Bolqnce
Astigmctism
Verticql
Removql
ond
Cqlibrotion
AND
Removql
.
Repoiring
Adjustment
Adjustment
CALIBRATION
ond
Replocement
Lomp
Replocement
. . .
. .. i..
..
35
35
36
36
36
36
36
36
37
INTRODUCTION
The B d K Model 1460 Solid Stote, Triggered
Sweep Oscilloscope is o loborotory
sionol instrument
wqveforms in electronic circuits. It perlorms
meosurements mode on conventionql
FULLY
SOLID STATE
TRIGGERED
SWEEP
LARGE
SCREEN
CALIBRATED
VOLTAGE
SCALES
CALIBRATED
SWEEP
HORIZONTAL
TV
VERTICAL
TV
SPEED
lor observing ond meosuring
Only the cqthode
uses <r {ilqment.
stoges
diodes,
trqnsistors). Among
vontoges
struction
No stobilizqtion wqrm-up
time
Low
Dependobility-reliobility.
Ruggedness.
Light Weight.
Compoctness.
The stobility
presentotion
porison
sweep
sweep
triggered
observed to
ore
even when
of vorying period
Fully
threshold
portion
be
The 130
inches)
tube
entqtion.
Accurqte
instqntqneous
different
Accurqte
on l9
Speciol sync
speed
designed
vision
Speciol
speed positions
designed
vision
qnd
required.
power
oscilloscopes.
remqins
olwcys synchronized,
odjustoble
used lor
diqmeter
gives
different ronges.
positions
horizontql
verticol
quolity,
oscilloscopes,
use trqnsisiors,
FET's
oI solid stqte
qre:
droin.
ol wqveform
is beyond
with
non-triggered
qt
by the signol
qssure
the wqvelorm
qllows
oI the
rqnges.
wqvelorm
triggering.
(opprox.
mm
eosy-tereod
meqsurement
voltoges
lime
meqsurements
ond
lor
observing
sync
ond sweep
for
observing
lrqmes.
profes-
roy tube
All other
(Iield
effect
the od-
rest until
being
thot
recurrqnce.
trigger
the
desired
cothode
pres-
on I I
sweep
specilicolly
lines.
specificolly
usuolly with greoter
Additionolly, it
speed,
oll
the electronic
color television
FEATURES
con-
com-
The
they
is
lo
5.1
roy
oI
tele-
iele-
includes greoter
qnd
sensitivity, plus
sophisticotion
qnd
other stqte-ol-the-ort
VECTORSCOPE
WIDE BANDWIDTH
WIDE RANGE
OF
SWEEP SPEED
EXPANDED
SCALE
HIGH
SENSITIVITY
CALIBRATION
SOURCE
Z.AXIS
INPUT
ILLUMINATED
SCALE
stobility
Vectorscope inputs
trols
q
with the
o
exoctly
television
DC
35
tion free,
presentotion
quencies.
Sweep speeds
cm to
every
viewing wqvelorms
to
A live time mognilicqtion
(5X)
qllows
of
Allows the low
high impedqnce, I0:l
uqtion
virtuolly
thus ollering
locding.
A built-in
peok-to-peok
permits
ibrction
pli{iers without
equipment.
Intensity modulqted
ity
guency
Fully vqriqble illumincrtion
for the scole.
horizontol morkers on
sccrle mqke
meosurements eosy
ond better
bqndwidth,
{eqtures
extrq
required
on the lront ponel. plus
vector
color demodulotor
to l0 MHz bqndwidth
nSEC rise
l0
c
included for time
overloy
oscilloscope provide
os specified
mqnufqcturers.
SEC/cm
0.5
speed necesiory lor
MHz.
ol the horizontql
close-up
portion
probe
qll
cqlibrqted 5 volt
checking
oI the verticql
mqrkers.
resolution.
to
for seivicing
devices.
qnd
supplied
by color
give
time
hiqh
of
voltoge ond time
resolution
ql
hiqh Ireq-
ol 0.5
provides
lrom DC
exqminotion
the wqvelorm.
cqpqcitqnce,
to
be used lor
meqsurements,
less circuit
squore wqve
qnd
qdditionol
Verticql
to
sweep
provide
disploy
distor-
pSECr
sweep
copobil-
or
con-
ond
otten-
recql-
om-
lre-
qnd
the
reqd.
SPECIFICATIONS
VERTICAL
Dellection
Frequency
Risetime
Overshoot
Input
resistonce
Input
copocity
Tilt
Mox.
input
SWEEP
CIRCUIT
AMPLIFIER
foctor
response
volroge
0.01 V/cm
5%,
divided
eoch providing
fine
odjustment.
-
DC
-
AC
35
nqnoseconds
3olo
or
I
Megohm
(cpproximote)
3SpF
5oZ
or less
(DC
300
V
to
DC
to l0
2 Hz
to l0
less
(opproximote)
*
AC peok)
Vp-p
20
lor
MHz
v/cm,
qll
-"on"
MHz
rqnqes
io,
(-3dB)
(-3dB)
or 600
-+
TV
synchronizqtion
HORIZONTAL
Dellection
Freguency
Input
Input
fqctor
response
resistonce
copocity
CATIBRATION
HORIZONTAL
MHz
Ilection
VERTICAL
minimum
Any portion
wqveforms
nized
viewing
AMPLIFIER
300
DC
to 800
l00K
40pF
VOLTAGE
I
KHz squore
(+-
5%)
minimum
100 Hz
lOmm
con be
ond
mV/cm
KHz
(Approximotely)
ohm
or
less
100
Hz
l0mm
to
ol de-
3
oI dellection
of complex
synchro-
exponded
(-3
dB)
wqve
of
SVp-p
to I
KHz
TV
Ior
Sweep
Sweep
Sweep
system
time
mognificotionAs
TRIGGERING
Typ"
Troce
Triggering
Slope
rqnge
TRIGGERED
MATIC
0.5
pSEC/cm
(:r5%),
divided
eqch providing
line
odjustment.
(13
TVH
(3.6
obove
center
Internql,
externql
triggering
Positive
20 Hz
lOmm
ured
scope)
p,SEC/cm)
mSEC/cm)
obtqined
sweep
line
(2Vpp
cnd negotive
to
l0 MHz
oI
deflection,
on
ccrthode
by
Irequency
crnd
to 0.5
lor lg
meqns
qnd
enlorging
5 times
or
(minimum
qs
rcy
AUTO-
SEC/cm
ronges
lor
TVV
the
from
ond
higher)
meqs-
tube
INTENSITY
MODULATION
Voltoge
POWER
REQUIREMENTS
SEMICONDUCTOR
Complement
ACCESSORIES
Probe:
Attenuotion
Input
l0:l
BdK-Precision
Impedonce
(Low
(Not
copocity)10
Direct
30Vp-p minimum
ll7
VAC,
line
50/60
cord)
wire
5 FET's
40 Tronsistors
l4
Diodes
Included)
Models
Combinotion
MEGn,
I
MEGQ,
PR-16
l0:l
l8pf
l20pl
Hz,
cnd
ond
20W
PR-20
Direct
(3-
Figure
l.
Controls
qnd
Indicqtors
OFF/scole
clockwise
turns
on
minqtion.
2
Pilot
lomp.
3
POSIUON
I
ment.
VOLTAGE,TCM
Coqrse
ticol s-ensitivity
.01
to 20 volts
to
the CAL position.
VARIABLE
ment. Fine
illuminqtion
turns
oscilloscope
Lights
control.
switch.
odjustment
is cqlibrqted
per
control.
control
control.
off
oscilloscope.
ond
increqses
when
oscilloscope
Verticol position
Verticql
oI verticol
cm when
Verticql
of verticql
VARIABLE
CONTROLS
Fully
counter-
Clockwise
scqle
illu-
is
on.
odjust-
qttenuqtor.
sensitivity.
in I
I steps
ottenuotor
sensitivitv.
Ver-
from
is
5
odjust-
In
set
the
AND
INDICATIONS
extreme
qttenuqtor
<>
6
tol
mcAnilicotion
pushed
7
DC BAL
justment.
8 SWEEP
sweep
times
when
CAL.
composite
clockwise
is
cqlibroted.
POSITIOIN
position
of trqce.
in.
odjustment.
TIME/CM
time
selector.
oI
pSEC/cm
0.5
VARIABLE/HOR
Selects proper
video
control.
when
(CAL)
wqveforms
position,
Rotqtion
Push-pull
pulled
Verticol
switch.
Selects cqlibrqted
to
0.5 SEC/cm
GAIN
sweep
the verticql
odjusts
switch
out;
normql
dc
bqlqnce
Horizontql
in
control
time
for
in
TVH
horizon-
selects
9
television
(television
when
qd-
coqrse
sweep
lg
stepi
is set to
SX
horizontql)
tions.
disploys
tion.
VARIABLE'HOR
odjustment
SWffp
In
sweep
AC-GND-DC
ro
switch.
V INPUT
tl
GND
t2
TRIG
t3
termines
stqrts.
tion,
overdge
STABILITY
l4
EXT SYNC'HOR
t5
nol
TRIGGERING
l6
ity
Disobles
the extreme
time
posjtion-blocks
AC.
srgnoL
GND
grounds
provides
'ot
performing
position-direct
DC
ponenl.
terminql.
LEVEL
sweep
sync or externql
(+)
TVV
ond
internol
externql
TIME
position-opens
*tti.n cqn
Jock.
point
fully
In
level of
(-).
or
horizontol
GAIN
(horizontql
switch 8
CM
clockwise
is cqlibrqied.
switch.
input
zero-signol
o
be
meqsurements'
dc
Verticol
Chqssis
control.
wovelorm
on
counterclockwise
is outomoticolly
the wqvelorm.
control.
jock.
SLOPE
(television
sweep
control.
goin odj{-s-tment
Verticql
dc
signol
verticql
to
bose
used
input oI
inPut.
ground.
Sync level
Sync
Input
horizontol
switch. Selects
generotor
input
Fine sweep
is in
position
input
component
input
omplifrer'
line,
relerence
cr
cts
qc qnd
odjustment
slope
synchronized
stobility
terminal
input.
verticol)
EXT
in
position).
EXT
(CAL)
selector
ol
poth ond
position
the
dc com-
whele_
(AUTO)
odjustment.
{or exter-
sync
posi'
ond
posi'
time
when
the
input
This
when
de'
sweep
posi-
to the
polcr-
TRIGGERING
l7
INT-wqvelorm
sync trigger.
EXT-signol
used
LINE-power
SYNC
t8
NOR-normql.
TVH-syncs
composite
TVV-syncs
composite
FOCUS control.
t9
INTENSITY
20
CALJLjqck.
2l
squqre
ASTIG
22
vides
Scole.
23
24
25
26
27
28
29
30
time
ond
reploced
ond
Observqtion
Bezel retqining
Vector overloy.
vectorscope
Probe
probe
direct
MOD
INT
input.
Fuse.
Power cqble
SOURCE
ot
qs
sync
Iine
switch.
on
video.
on
video.
control.
Provides
wove output
odjustment.
roundness
Provides
meosurements.
(Not
cqlibrqtion
wth vector
bezel.
nuts
Used in
opplicotions.
illustrqted).
qvcdlqble
jock.
storqge
switch'
being observed
SYNC'HOR
EXT
trigger.
lrequency
horizontol
verticol
Adjusts brightness
opproximotely
ot
Astigmotism
spot on cqthode
to
(4).
for
Intensity
comPortment.
sync
components
component
colibrqted
odjustment
mqrks
cqn
Scqle
overloy.
ploce oI scole
(Not
illustroted)
Combinotion
verticql input.
modulotion
used os
is
jock
15
(50
50
oI
ol troce.
VP-p
5
KHz.
I
tube.
roy
voltoge
for
be removed
26.
23
l0:l ond
(Z
is
Hz).
oI
pro-
{or
oxis)
29
28
Figure
Beqr Pqnel
OPERATING
INSTRUCTIONS
CAUTION:
lionce
thon
o few
nently
in
motion
INITIAT
l. Set the OFF
OFF position
2. Connect
outlet.
3.
Set the i POSITION
TION control
4.
Set the
position
5.
Set the AC-GND-DC
tion.
6.
Turn on the
scqle
"click"
the
minqtion,
7.
Woit
(CRT)
the fqce
8. II no
INTENSITY
eosily
STABILITY
ploces
Never
to
remoin
seconds.
burned.
by
cousing
STARTING
the power
TRIG LEVEL
(fully
illuminqtion
on
control
o few
to
worm
ol the
troce
observed.
the
Reduce
ond
clockwise
oppeqrs,
control
control
sweep
ollow
stotionory
'scole
(fully
6
counterclockwise).
oscilloscope
seconds
CRT.
q
smqll
on the
The
spot
moy
intensity
it to
sweep.
PROCEDURE
illuminotion
counterclockwise).
cord to cl ll7 volt,60
to
the pilot
up.
control 3 ond
the
cenler
control
switch
control
to
for
A trqce
increqse
2O setting
II
troce
14 fully
generotor
tO
by rotcrting
I clockwise.
lomp
the desired
the
is still
spot
of hiqh
screen
become
or keep
control I to
o{ their rcrnges.
t3 to the AUTO
to
2 will
cothode
should
(clockwise)
until the
not visible,
clockwise,
q
in
fo-r more
permq-
the
Hz
<>
POSI-
the
GND
the
OFF/
It will
light.
scole
rqv
opp"or
trqce
which
free-running
bril-
spot
the
AC
posi-
Turn
illu-
lube
ort
the
is
turn
mode
sweep/.
L Adjust
control
10.
Reodjust
necessory,
11.
Check
ond
DC BAL
instructed
BRATION"
justments
The
.
Iorm
WAVEFORM
oscilloscope
meqsurements.
l.
Perlorm
dure, then
INPUT
z.
For
oll except
probe
omplitude
peok),
for
chonging
or vice
impedoace
in the
shu-nt
h_iVhgr
should
cuit looding.
3.
Set the
ing
only
l0:l position
copocitqnce
(no
sync
the FOCUS
2O lor the
the
POSITION
to
center
lor proper
7 controls
in the
portion
reguire
is now
OBSERVATION
the
steps of
connect
receptocle
27 is
set
versq. The
input
be used
AC-GND-DC
the
low
sel for
woveforms
the probe
the probe
with
only lSpF
impedonce
when possible
qc
component
trigger
thinnest,
odjustment
MAINTENANiE
checking
l l.
probe
in the
switch
required
control
controls
the troce.
ond
oI
this
reody
the initiol
probe
the
omplitude
l0:l
ottenuotion.
(below
Ior
DIRECT.
from l0:l
hos q l0
ond I
megohm
DIRECT
(low
lO to
(This
t9
shorpest
CRT
mqnuql.
only periodicolly.
for
shunt
copoiity
to produce
qnd
INTENSITY
troce.
3 ond
of
the ASTIG
positioninq
moking
storting
coble
wqveforms,
0.5 volt peok-toSee Figure
to DIRECT,
megohm
clpocitonce
wlth l20pF
position.
to
deireqse
AC lor
is the
qnd
These
proce-
to itre
For
position)
meqsur-
normql
6,
22
qs
CALI-
od-
wove-
the
low
input
The
cir-
if
V
3
I. PULL APART
PUSH
3.
Figure
BACK ToGETHER
3. Chonging
Probe
PROEE COMPENSATiON
A
DJUSTMENT
Irom
l0:l
to DIRECT
position
used
lorge
meosuring
reference,
wqveform
GND
ground
voltoge
4.
Connect
chqssis
Connect
circuit
l.
If
less
rormer
2.
The
meqsurement
5.
Set
thot gives
on
the
The
unsyn_chronized.
cerned
speed,
ing
the
nql
thqt
tion
chronize
6.
Set
the
for
observing
forms
to
the
composite
horizontql
qll
other
7.
Set
the
(internol).position
INT
observed
Most
switch
sync
source
When
or
other
60
Hz,
chronizes
for
if
the
dc
position
reference
reodings.
the
ground
lhe
where
the
equipmenl
crc.powered
to
peok_to_peak
the
VOLTAGE/CM
2
scqle)
disploy
wirh
which
desired
p-roduces..or
develops
the
SYNC
syn_chionized
TVH
video
sync.
wqveforms.
TRIGGERING
qlso
is
wq
vef
orm.s-
in
the
observing.,woveforms
circuits-
use
the
rhe
frequency.
8.
Set
the
TRIGGERING
I^jl: :y""p
gorng
triggered
ing
sired
sync
::|::
nqls
observed,
q.
b.
position
9.
Set
wove,
by
o
relevisibn
to.
sync
pulses
vqries
rhe
polority.
or
occording
use
II
the
observed
ore
positive
produced.by-"_plog!fq
position
If
the
observed
the
ooing
oI
the
of
the
SWEEp
most
meqsurements qnd
point
component).
bolh
ond
(be.low
rip
prevent
cm
verticql
odjusting
sweep.
television
posilion
being
the
ony
5
is
required
1s
ground-
of
oI
the
ihe
woveform
WARNING
item.
should
to
6
cm
the
-on
The
presentJ
number
sufficient
switch
wiir,
wqvelorms
putses,
SOURCE
*h;
to
be
used
shou
posirio".
INT
is
required,
thot
LINE
sweep
con
posiiio;.
*tiil-ii;"
SLOPE
i"
b9
J9
qnd
to-
(-)
negoti""
coriposite-"i;U
the
sweep
the
ve-rticol
of
rhe
to
rhe
t"tior"i"q
sync
pulses
(upwora
TRIGGERINC
p}Ejg_"-_lrq_otive,
inlccnnlr,lE"SJtjiL*"_lcrr.
TIME/CM
meosured
tise
the
qc
component
time
Hz)
is
o"ty
required,
clip
the
Lquipment
pr;i;
under
use
dongerous
.voitoge
not
conhol
(tw;i;"i*
deflection.
screen
remoining
synchroniioiiori
c
stcble
of
leost
triggei
lg
to
"o-po"it"'rrideo
*]iti"""i
for
.t;;;;9
;;
ih.
-th.
to
r
J
b;
bc
q
wcrretoims.
I
-low
very
to
bL
*t
"r,
"r,"h
oI
the
-the
i.
is
to
is
qn
isolotion
electriccl
ot
exceed
4
will
steps
displcy;i;;I
q
torg.
test
il;;.rti;"j'iirijl-
signol
the
TW
sync
synchionized
iii;'R
switch
i*ro.r.tor*
triqqei
_;iJi,"i
Wil;-;n
use
the
EXT
i"-pl_",
be
"yrrJt"rorri""d
Tfi;;"ition
;;
lnp.rt
switch
r.,i;-s;,"j'ir'"
if-tne
qoi";';;Llio,
to
the
""ft"q.l,
"-6"p
;;;"is
the
horizontql
b[;ki;;"hes.
";;;;;ii"'"ideo
point
"i
ir;"d;;J,
or
blonking
tcc.
a.nd"ii""
ile
Siijpn
conrrol
8
ond
use
obseivl=J-fili
q
probe
point
be
tronsformer-
the
600
to
probobly
posnion
ih;;;;;:
"irirl
t6
_iri"i
"wlch.
must
incluJes
p;.;ii;io;
ond
the
freguencv
zero-sisnql
;;-f.;'d"
27
under
in
*"o"ur"J
trcns_
shock.
point
volts.
q
posilion
se[uqres
qre
con_
orra
"*LLp
Any
siq_
t;
"y"-
posifion
wqve-
pulses,
retevision
with
for
t7
to
rhe
l"i.rq
I[iJ
externql
;;;ii";:
circuits
with
syn-
po*.,
(*)
to
poslive
is
to
be
ob"rr*,-
il
is
de_
line
Be_
siq-
ili"
pulses
i"
(_)
rhe
(+)
rhe
VARI_
be
dc
to
test.
rhe
of
be
J
12.
ABLE/HOR
number
set
for
but
the
o proportionolely
This
is
the
sweep
NOTE:
low
repetition.,rqtesl
operote
imum.
mqy
qoes
erqtion
serving
tions
lwo.complete
verticql
10.
To
I:Ey_EL
Under
qppeqr
not
ond
The
TVH
lelevision
select
frqmes
synchronize
control
AUTO_position.
trol
14
qppeqrs.
ju:t
wise
pecrrs.
free.
too
(non-synchronized)
Il.
Step
mctic
the
sync
is
cose
TRIG
the
the
desired
gdjusJ
hos
one
wise
threshold
is
wise-
llfli"s.
tree-running,
rqnge
chronizqrion
presentotion.
l"_p:"d
inpur
However,
is
entire
eosy
For
Iorm,-pull
6.
This
(5X
portion
left
ctockwise,
center.
inwqrd
the
This
jitte-r.
of
lqr
clockwise,_qs
qssumes
l0
sync,
wqveform
trigger.
desired
in
viewing
TEVEL
AUTO
wcvel6rm qnd
time.
the
three
extreme
end,
level
sufficienr
extreme,
will
provides
upon
ond
the
.crilicol;
"center,,
to
attoin.
o
close-up
expqnds
of
center.
turn
on
the
outword
the
qnd
the
nor
mcaniiicotion)
-of
normql,
GAIN
of
wqveforms.
viewing
lrqce
becomes
becquse
repetition
When
with
the
qt
rn
ony
moy
ond
the
horizontql
t3_fully
counterclockwise
Now
turn
th-e-
-post
should
Do
wherein
is
If.
onother
qs
the
conrrol
only
o portion
_progress,"ely
smqller
ihe
writing
,or.
using
very
tt
e
intensity
these
conditions,
the
extreme
qf{ect
woy
be
disregorded.
TVV
pcsitions
video
correct
when
the-
Nexr
not
thot
qutomotilolly
sync
wqvelorms.
sweep
9
is
woveform,
""r"-[-f"lkwise
i"r"
the
STABILITy
point
provide
turn
ttre
it
will
mode.-
you
th'e
point
tiigger
where
predominont
These
'operotor'
lines
set
.,"iit-lt"
go
'-
sinusoidli
coitrol
posirion._Set
fe
cl,o"t*i"e''owcy
it
"
"""ii"iiy
"Lr.-rr,"i'ii'Jor,"
It_mqy_-qlso
STABr].tfy
genercl
no
ro
to
the
trqce.
is
rrigger
,,--oJ"";;
other.
i"
set
so_none
the-jync-
trissdr
unsynchroni
ond.resulti
The
the.
setins
sertin-g
sweep.
turn
ro
the
control.
non-mognifi.a
pl9p9,
,rhe
boundories
strength
ot
.t i;"
it
oierotes
qreq
q"d
view
oI
on
s-w9ep
lhe
ond
ihe
view
control
be
co"tiot
iolr.i'
On
prod"".a,
rh"
;;;;p:'"ei
threshtli'is
rh.
;;;p;
zed
threshold
i"
thtl;;ired
of
ond
irre
rnlC
-dil4,girirv
pr;;;;ly
th;-p;;;;,,,
o portion
ir-p-OSliiON
the
by;?;;j.,
dilif"i"i"ri"rn"
To
;ie;-o;o,rtion
pO'Sfil6"rrf
.;
porlio;;-;ii.
iounterclockwise.
to
i"1"i"-
"""a-ijio"l
9
f.or
co.rtrol"
ot
portion
"il;J
io6"
lost
control
lelt
the
ifr.-
o
SfeBiLITy
intoo
--"Y
desire
bn
rs
increqses
"ot
sweep
*oy
toword
o retrqce
ol
the
oscilloscope
qre
ideql
time
or
two
to
CAi.
set
S-iennny-"o*
control
the
stobie
fre"-;;;i;
Y
to
seiectea
the
(os-is
wqves),
neclssory
ill-ir,i"
,otot.a
the
counterclockio,
oiit.irrp,rt
*,.
so
i"."rri"j
niod
e.-
ftre'ce.r
this
center
type
of
isvei'"J;,irij.
over
setting
of
the
control
tli
sweep
the
desired
;"r';;
o
wqve{orm,
di;;e;-;;
disployJ
.fr""g..
speed
wish
mox_
,,pip,,
troce.
TIii"
for
Th;J;;-
to
the
lrqce
troce
wqveform
use
wqveform
often
iil
ob_
aisiky
complete
--"'.'-'"
TRIG
ro
the
dis-
clock-
recp
control
cuto_
point
of
os
the
the
iil;
trom
observing
or
rhe
to
re_
control
to_
-"fi"
tfr"
signol
ctock-
low
thot
ii'l
tel
Li
il;:
srable
rqnge
siqnol
conrrol
this
is
wcrve_
control
of
five
center
to
the
6
righr
of
push
ro
but
--'
op-
ot
to
CALIBRATED
Peok voltoges,
voltoges
ond
Iorm
ore eosily
oscilloscope.
l.
Adjust
ploy the
2. Be sure
Iully
3.
Set the VOLTAGE/CM
verticql
the limits
4. Reod
Irom the
be
reodjusted to
eqsier scqle
ing
trol 3 to
GND-DC
note
switch
dellec-ts
qnd
NOTE:
wqveforms
probe
looding
thqt
For
be
qnd
the
VOLTAGE
of o specilic portion
controls
wqveform
the verticql
clockwise
dellection
of the
qmounl
the
scole. The
voltoge,
o dc
o convenienl
switch
qmount
the
ploced
is
upword
downword
qccurote
on
qbove
used in
thqt
height
ol
MEASUREMENT
peok-to-peok
qnd
occurqtely
previously
os
to be meqsured.
VARIABLE
to the
reqding
lor
5 MHz,
the
the
the
CAL
control 4
possible
verticql
ol verticql
POSITION
+
shilt
the reference
if desired.
odjust
reference
lO in
the trqce
oscilloscope
the GND
in
the
lor o positive
l0:l position
pottern
DC
o negotive
disploy
ii is-
voltoges,
o{ o complex
meosured
instructed
control
position.
for the
without
scqle.
dellection
control
When
pOSITION
rhe
I
with
position,
is
dellected
position.
voltoge
voltoge
oI high-Irequency
import-ont
tb
reduce
controls
does
not exceed
dc voltoges
wove-
this
on
to dis-
is set
5
lorgest
exceeding
(in
cm)
moy
3
point
for
meosur-
con-
the
AC-
then
when
input-.
thot
circuit
be
trqce
input
set
4
cen-
the
thl
so
The
timeters
CALIBRATED
Pulse width,
oll other
occurotely
time
microsecond
the
ever, the
to
ning
to
qnd
Cqlculqte
Multiply
VOLTAGE/CM
in Figure
disployed
qctuql-
is set lor l0:l
disployed
meqsurement.
Colibrqtion
be occqsionolly
peok-to-peg\
the
should
need
"MAINTENANCE
of the
entire
right
spot.
voltoge
CALI
for recolibrqtion
mqnuql
wqveform
meqsured
meqsurements
wqvelorm
bright
qcross
ond
ending
thct the
the voltoge
the
verticdl
4).
Don't
on the
qttenuqtion.
when
occurocy
squqre
l_jock
reqd
exqctly
Ior
TIME
wovelorm
(7,S)
ore
spot
the
points
trqce
be centered
reoding
dellecti5n
control
oscilloscope
being
the probe
cheiked
MEASUREMENT
time
on'this
from
possible.
is not
cqn
screen
4
lorget
21.
ond CALIBRATION"
complete
settinq
thot the
meosured
of
wove signol
volts
5
periods,
durqtions
5
visible
be
which
of the
is onlylTtOtn
The
is set
the
oscilloscope
by
observing
This
cqlibroted
peok-to-peok.
is
indicoted,
procedures.
circuit
oscilloscope.
secondi
At low
qt
seen
movinq
mqkes
meosurement
verticqlly.
os lollows:
(in
cm)
(see
ioltoge
when
qctual
qre
one
exq;nple
the probe
voltqqe
{or
the
ovoiloble
deloys
eqsilv
Cqli6roted
down
sweep
time.
from
the
by the
reoding
tfre
DIRECT
moy
S vol't
ot
source
II
see
the
section
ond
qnd
to
speeds,
How-
lelt
beqin-
eisy
is
o
.l
.}POSITION
TOP OF
VERTICAL
ANO
EASE
eosrrroN
I
SO
THAT
FORM
A
ALIGNS
HORIZONTAL
CONTROL
WAVEFORI'I
SCALE
OF READING
ADJUSTEO
CROSSES
MARKER
FOR
p
@
@
@
coNTROL ADJUSTEo
EOTTOM
EXACTLY WITH
WAVE-
OF
REFERENCE
SO
THAT
CENTER OF
ACCURACY
VOLTAGE/CM
set
VARIAELE
TO
LINE
to .02U
CAL
SET
EXAMPLE
VERTICAL
DEFLECTION
VOLTAGE,/CM
PROBE
PEAK.TO.PEAK
PROBE
ATTENUATION
WAVEFORM
ATTENUATION
=
4.2cm
-
.vz
. oStN
0.84v
l0
t0
Figure
4.
Typicol
Voltoge
Meqsurement
l.
Adjust
stqble
Be
fully
Set
lorgest
ment to be
If necessqry, reodjust
STABILITY
stqble disploy.
Reod the
5.
between
POSITION control 6
one
scqle mqrker lor
b.
Colculqte the time durction
Multiply the horizontol dellecton
SWEEP
in
ficqtion
to obtqin the
Time
7.
This
The
circuit
controls crs
disploy
sure the VARIABLE/HOR
clockwise
SWEEP TIME/CM
the
possible
meqsured,
controls 13 ond
qmount
the
meqsurement
the
of
TIME/CM control S setting
Figure
5).
is used, the result must be divided
meqsurements
is especiolly
sweep is stqrted
ond the wqveform
previously
oI the desired
CAL
to the
display oI
usuclly
the TRIG
horizontql dellection
of
points
eqsier
Remember, when the 5X mcgni-
qctuql
meqsurement.
of
moy
reading.
time durqtion.
often
true when
by a sync
described
wqveform.
GAIN control
position.
conlrol 8
wqveform seg'
the
one cycle.
LEVEL
14 for the
reodjusted
be
points
with c
qs
follows:
(in
cm) by
(see
require
meqsured in c
externcl sync.
meosuring
signol
for cr
9 is
the
for
qnd
most
(in
cm)
<>
The
to
clign
verticql
the
exqmple
by
deloys.
from one
subse'
5
EXTERNAT
For some
dellection signcl
guent
deloy
quent
circuit. This
between
woveform.
qllows
the sync
To
ments using externol
meqsurement
pulse
perlorm
sync, use
the
of
cnd the subse-
meqsure-
such
the lollowing
steps:
c. Set the
the EXT
Connect o leod from
b.
jock
short
c. Set
the
TRIGGERING SOURCE
position.
| 5 to the
shielded
the TRIGGERING SLOPE switch 16
proper polcrity
source
cable.
(*)
the EXT SYNC/HOR
sync signol. Use
oI
or
switch
(-)
for the sync
17
signcl.
Reodjust the TRIG LEVEL ond STABILITY
d.
controls
ond 14, iI necesscny,
13
for
c stcble
wqveform.
Ior
qs
to
it
exlernql
sync.
for
the
e. Set the SWEEP
TIME/CM
control 8
other time meqsurements. Do not set
position.
EXf
horizontql
dellection,
This
position
not
exlernql
is
f. If meosuring a deloy, meqsure the time from
the stcrt
oI the sweep
to
the stqrt ol the wqve-
form.
HORIZONTAT
meqsurements,
is required. This
INPUT
qn
exlernql
moy be cr
horizontql
sinu'
to
q
to
DISPLAYS
AT
GRID
.}POSITiON
THAT
FORM
SHOW
OF
HORIZONTAL
CONTROL
EEGiNNING
ALIGNS
REFERENCE LINE.
NOT BE VISIBLE
MY
FAST
ALIGN
PULSES;
b/HEREVER WAVEFORM
GINS.
TYPICAL
ADJUSTED
EOGE OF
WITH A
NOTE:
IN THIS
WAVEF
ORM
PUT
O['T
TUBE
SO
WAVE-
VERTICAL
EOGE
ON VERY
CASE
BE.
HORIZONTAL
OEFLECTION
.3
cm
SL0PE
(to
negative-going
set to
start
sweep on
edge)
feosrrloN
THAT
TRAILING
CROSSES HORIZONTAL
ACCURACY ANO
FOR
P
E
SI.JE
set
T rt41/cA
to
VARIABLE/HOR
set
to
EXAHPLE:
HORIZONTAL
swEE P
TIHE
(or
PERI0D)
coNTRoL
AoJUSTED
EDGE OF
|
Opsec
GAIN
CAL
OEFLECTION
IME,/Ct't
T
OURATION
wAVEF0RH
0F
so
WAVEFORI'I
I
0uSE
5pse
|'tARKER
C
c
SCALE
EASE OF REAOING
:
6,35cn
53 .
i
Figure
Typiccl Time Meqsurement
5.
FREQUENCY
=
JT
IHE
=
;6'oobffi
15,7
I
50
ll
Hz
soidol
or on exlernol
must be obout 250 millivolts
(usuolly
sotisloctory
input,
Z.AXIS INPUT
sity moduloted
time-scole morkers
peok
wove, such os used lor
sweep voltoge. This input
volts
2
results).
use the
l. Set the
position.
2. Connect the
through o coble to
3. Adj"; the omount
the VARIABLE'HOR
odjusts the
4.
All sync
effect.
The trqce
or
SWEEP
conlrols
disployed
greqter
more peok-to-peok
or
Iollowing procedure:
To use on externql horizontol
TIME,/CM
externql
goin
ol
qre
(Z-oxis
ore required.
signol
the
oI horizontol
the
on the screen moy
input) where
phose
per
control 8
horizontol
EXT
GAIN control 9, which
horizontql omplilier.
disconnected
opplied
meqsurement,
cm of
siqnol
/HOR
SYNC
dellection with
frequency
A 30-volt
ot the
voltoge
dellection
provide
will
to
the
source
jock
ond hqve
be inten-
peok-to-
INi'
APPLICATIONS
TELEVISION SENVICING
A triggered sweep oscilloscope is odvontogeous
in servicing ond
oscilloscope
incorporoied to moke television servicing
oligning television receivers. This
olso includes severql leqtures thot were
eqsier
EXT
15.
no
or
MOD
qnd
,
\
l
t
\-/
Figure
{intensitv
oscilloscbpe
blonkinq oI the troce.
more comprehensive.
r Sync. seporotor
or
observing
video.
6. Oscilloscope Troce with Z-oxis Input
modulqtion)
will proviie
qnd
(horizontol)
TVH
verticolly
-\
,
t
,
(See
These Ieqtures
sync to trigger the sweep Ior
\
2?
iock
olternrrte brightness ond
Fiqure f .)
selection ol TVV
or horizontqlly synchronized
I
on
a
\
I
.'he
reor oI lhe
include:
(verticcl)
T
V
IOEO
DETECTOR
COL
BURST
HOR
IZONTAL
SYNC
HOR
BLANK
PULS E
OR
PULSE
IZONTAL
ING
VIDEO
__J
TVH
INT
a
CAL
TVH
AC
AUT0
TELEV
IS
ION
SET
Figure
7.
Horizontql r
Composite Video
Sig
as ol
ol
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