Dynascan Corporation B+K Precision 1466A User manual

1466A
1476A
F
Model1466A-Single
Trace
Model
1476A-Dual
Trace
10
MHz
Oscilloscope
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TESTINSTRUMENT
SAFETY
WARNINC
Normcl use of lest equipment exposes
you to o cerloin omounf of dongerfrom elecfricol
shock becousetesling musl oflen be performed where exposedhigh voltoge is present. An
electricol shock cousing l0milliomps of current to poss
throughthe heorf will s+opmost
humonheorlbeots. Voltoge os low os 35volts dc or oc rms shouldbeconsidereddongerousond
hozordorrs
since it con produceo lelhol current undercertoin condiiions. Higher voltoge poses
on even greoter threot becousesuch volloge con more eosily producea lelhol current, Your
normol work hobits shouldinclude oll occeptedprocticesihoi will prevent contoct with
exposedhigh voltoge, ond tho+ will s+eer currenl owoy from your heorf in coseof occidentol
conloci wilh o highvoltoge. You will significontlyreducethe risk foctor if you know
ond
observethe followingsofety
precoulions:
3.
4.
2.
q
7.
Don'l exposehigh volloge needlesslyin the equipment under test. Removehouslngsond
covers only when necessory. Turn off equipmentwhile moking lest connectionsin high-
voltoge circui+s. Dischorgehigh-voltoge copocifors ofter removingpower.
lf possible, fomiliorize yourself wiih ihe equipmenibeingtestedondthe locolionof its
high voltoge poinls. However, remember thot high voltoge moy oppeor ol unexpecled
points in defective equipmeni.
Use on insulotedfloor moieriol or q lorge, insulotedfloor mot to slond on, ond on
insulqled work surfoce on which 1oploce eqrJipmeni;moke cerioin suchsurfoces cre nof
oomp
ol weT.
Usethe time-proven
"onehond
in ihe pockef"lechnique
while hondlingon inslrument
probe, Be porticulorlycoreful io ovoid confoctingo neorbymetol object thot could
provideo goodgroundreturn pqth,
When using o probe, +ouch only the insuloted por+ion. Never louch the exposediip
porlaon.
When
iesfing oc poweredequipmenf, remember fhot oc line voltoge is usuollypresenl on
some power inpuf circuits such os the on-off switch, fuses,power tronsformer, efc. ony
time the equipmenf is connectedlo on oc ouilef, evenif the equipmentis turned off.
Some equipmenl wilh o lwo-wire oc power cord, including some with polorize{ power
plugs,
isthe "hot chossisrriype.Thisincludes
most
recenlfelevisionreceivers
qnd
oudio
equipmenl. A ploslic or woodencqbinef insuloles the chossislo prolecl the customer.
Whenihe cobinet is removedfor servicing, o seriousshock hozord exisfs if the chossis
is
touched. Not only does ihis present o dongerousshock hozord, but domoge fo tesi
instrumenfs or the equipmenf under iest moy result from connecling lhe ground leod of
mosfiesi inslrumenls
(including
this oscilloscope)lo o lhot chossisr!.To mokemecsure-
ments in iihot chossisrequipmenl, olwoys conneci dn isololion lronsformer between the
oc ouile+ond lhe eouiDmentunderfest. TheB&K-PrecisionModel TR-l!0 lsolotion
Tronsformer,or Model 1653 or 1655AC PowerSupply issuifoble
for mos+
opplicotions,
To be on the sofe side, treqf oll fwo-wire oc poweredeqr.ripment
qs"hot chossisr'unless
you ore sure it hoson isololed chossisor on eorth groundchossis.
8. Never work olone. Someone should be neorby to render oid if necessory. Troining in
CPR
(cordio-pulmonory
resuscitoiion)
first oid ishighlyrecommendeo,

lnstruction
forManual
Model1466A-Single
Trace
Model
1476A-DualTrace
10
MHz
OscilloscoPe
ThiE sylnbol oD oscilloscope meaas ntefet to iD8truction
Il1anual fo! furthe! precautionaty iofolbation". This
syEbol appears ir the Danual \there the corre8ponding
inforEatiod is given.
DYNASCAN
COF|PORATION
6460
WestCortlandStreet
Chicago,
Illinois60635

TAsLE OF CONTENTS
page
TESTINSTRUMENTSAFETY . . . . inside front cove!
FEATURES .............1
bPrru.LtluAltuNb. .... ...,......2
CoNTROLSANDINDICATORS. .... ..........5
OPERATINGINSTRUCTIONS. ...... 13
SafetyPrecautions ........,,,..13
EquiphentPlotectionPrecautions.,,......,13
OpelatingTips ..,.,...14
Initial
StattingProcedure... ........,,,,.15
Single
TlaceDisplay,. ,.......,.15
DualTraceDisplay, ........,...15
Tliggeling ,,,,.......16
MagnifiedSweepOperation, ......18
X-YOpelatioD ....... . 19
VideoSigrralObselvation.,,. ,,,,.........19
APPLICATTONS ,,....... 20
SINGLE-TRACEAPPLICATIONS.. ......... 20
DCVoltage
MeasulerDents... .......... Z0
Peak-to-PeakVoltageMeasureErents ......21
TitDeMeasureDents . ......... 21
FlequencyMeasuteEents
.... ,.........22
PulseWidthMeasureDents
., ,.,.,......23
Relative
MeasuleEerts.
. , . . . .. , ....... 24
DUAL-TRACE
APPLICATIONS. ....,......27
TirleDiffelence
Meaaurements. .,,..,...27
Elimination
of an
UndesiledSignalCoEponent .,,,,,,21
PhaseDifference
MeasulemeBts .,,. .. . ,. 28
x-Y MODEAPPLTCATIONS
., .......,,, ,, 30
PhaseMeasurements..
..,.. ........... 30
Flequency
ResponseMeasrferients ....... 31
OPTIONALACCESSORIES
,. , ...... 32
MAINTENANCE .
Fuse ReplaceEent
Case Ren:oval
Pedodic
Adjustmeats......
Calibration Cbeck ..,
InstruEent Repair Selvice. . .
Additional Servichg Informatio
o
33
33
34
34
34
WARRANTY
SERVICE
INSTRUCTIONS
.,,,,, . . . . . . . inside backcover
LIMITED ONE-YEAR \IIARRANTY insideback cover

FEATURES
c
FEATURES OF SINGLE-TRACE
AND DUAI-TRACE MODELS
CRT FEATURES
Rectangula! CRT with large 8 x 10 centi-
mete! viewing alea. High blighttess, Z kV
accelelation voltage. Internal 8 x 10 divi-
sion glaticule elihinates pa-lallax euor.
Trace lotation electrically adjustable flol!
front panel.
10 MHz BANDWIDTH/3s ns RISE TIME
Conselvatieely rated -3 dB bandwidth is dc
to 10 MHz. Tliggeling beyond 10 MHz.
HIGH SENSITIVTIY
width. Selectable I ov/die sensitivity to
7 MHz, Pellrlits the low capacitance, high
iEpedance 10:1 probe to be used fo! neally
all DeasuleDents, thus assuring minimuD
ci!cuit loading.
CALIBRATED TlME MEASUREMENTS
Acculate tiroe (pe!iod) measuleroents (j3%)
on 19 caliblated ranges from 0.5 s/div to
0.5 tb/div, plovides evely sweep rate needed
fo! viewing wavefolms from dc to 10 M}Iz.
Sweep ti[|e fully adjustable between cali-
b!ated !anges.
X1OSWEEPMAGNII"ICATION
AUows closel examination of waveforms,
increases baximurr sweep rate to 50 ns/div.
CALIBRATED VOLTAGE MEASUREMENTS
Acculate voltage measueDents {J370)
otr
12 calibrated langes Irot! 1 rnv/div to 5 V/
div. Vertical gain fully adjustable betpeen
calibrated !anges.
AUTO SWEEP
Selectable AUTO sweep plovides sweep
witlout tligger input, automatically levetts
to tliggered sweep operation when adequate
trigger is applied.
1TRSATILE TRIGGERING
Selectable INTernaI, LINE (50/60 Hz), or
ExTernal tliggelirg. Fully variable trigger
LE\EL control.
VIDEO SYNC
Selectable FRAME o! LINE tliggering for
observing composite video wavefolms.
X-Y OPERATION
Extelnal trigge! input (channel 2 on dual-
trace Inodel) can be applied as holizontal
(X-axis) deflectior while the vertical input
(charnel 1on dual-tlace model) plovides
vertical deflection (Y-axis).
Z AXIS INPUT
Intensity modulation capability. Tlace
blightens with positive sigrali TTL com-
patible.
BUILT-IN PROBE ADJUST SQUARE WAVE
A 0,5 V p-p, 1 kHz square wave generator
pelrDits probe compersation ailjustment.
ADDITIONAL FEATURES OF
DUAL.TRACE MODEL
DUAL TRACE
Two identical veltical input cha]nlels pe!-
rnit sihultaneous viewing of two wave-
forms. Alternate or chop sweep selectable
at all sweep rates,
SUM AND DIFFERENCE CAPABILITY
Permits algebraic addition or subtraction of
chanDel 1 alld channel 2 waveforms, dis-
played as a single trace. Useful fo! diffeF
ential voltage and distoltion measurements.
EXPANDED INTERNAL TRIGGERING
Selectable CH 1. CH Z. or V. MODE source.
Ir V. MODE, each wavefolm displayed
becomes its own trigger (alteltrate triggeF
ing in ALT dual-sweep mode).

)
PECIFICAIIONS
MODEL 14?6A
DUAI-TRACE MODEL 14664
SINGLE-TRACE
CRT CRT
Type TYpe
150GTM31.
Rectan8ular
with internal 150GTM31,Rectangularwith irrternal
graticule, graticule.
Accel€ratioa Voltage Acceletation Voltage
2kv. 2kv.
Dtsplay Area Display Atea
8 x 10divisions;
I div = 10mm. 8! 10divisionsil div= l0 ncm.
VERTICAL AXIS (CII I and CI{ 2} VERTICAL AXIS
Sensitivity SeDsitivity
1 rDv/div to 5 !/?\a, t3%. t hv/div to 5 V/dia' t3%.
Attesuato! Atteluatoa
12steps, 1 mv/div to 5 V/div in 1-z-5 12steps, I mv/div to 5 V/div in 1-2-5
sequence. Vemier contlol fo! fully adjust- sequence.verIrier control fo! fully adjust_
ablesensitivity between steps, ablesensitivity between stePs.
LnputIbp€dance Lq'lrt ImPedance
1 Mn i2% shunted by applox, 35pF. 1 MO Jz% shunted
by aPprox.
35PF. ,
Frequency Re6porBe Ftequency Re4onse
2 Dvlti? to 5 v/dtv z hv/div to 5 v/diY
Dc: DC to 10
Mltz, -3 dB. DCr DC to 10MHz' -3 dB.
AC: 5 Hz to 10MHz,
-3 dB. AC: 5 Hz to 10MHz' -3 dB.
I mV/div l mv/div
DC: DC to ? MHz,
-3 dB. DC: DC to ? MHz'-3 dB.
AC! 5 Hz to 7 MI{z, -3 dB. AC: 5 Hz to ? MHz, -3 dB.
Rise fiEe Rise TiEe
2 bV/diy to 5 V/div 2 EV/div to 5 V/diY
35nsor less. 35nsor less.
I DV/diY l mv/div
50rs o! less. 50ns or less.
OyetBhoot Ovelshoot
57oor less, 100kH? squale wave. 57oot less,100kHz squarewave.
MariErb Lqrut Voltage Mati|bub IrFrt Voltage
500V p-p or 250v (dc+ ac peak). 500V Fp or 250V {dc + ac peak).
0
fr

SPECIFICATIONS
MODEL 1,{?6A
DUAI.-TRACE
MariDuD Nc-Distolted AElrfitude
Mole tha! 6 divisions, dc to 10 MHz.
OpeatiDg Modes
CH 1: Single trace.
CH 2r Single tlace.
ADDI CH 1 + CH 2 single trace.
ALT: Dual tlace, alternate sweep.
CHOPI Dual tracel choppeil sweep.
Chop Frcquercy
Applox. 250 kllz.
CIl 2 Potaity
Nolrnal o! invelted.
Crosstall
-40 dB minif|um.
HORZONTAL AXIS (IDput thu cE z'
xlo MAG Dot includeo
Op€latirg Mode
X-Y mode selectable with TRIG MODE
switch, CH 1=Y axiE,CH2 =X axis.
SeDsitivity
Sa!!e as vertical axis.
InFrt IEIr€daDce
Same as veltical axis.
Frequelcy R€slroDse
DC:
AC: DC to 500
kgz, -3 dB.
5Hz to 500kHz,
-3 dB.
MODEL 1466A
SIIIGLE-TRACE
Majrimurn Nd-Dbtolted ADplitude
Mole than 6 divisions. dc to l0 MHz.
EOR.ZONTAI AXIS
(Xlo MAG Dot iaduited)
Op€tr.ting Mode
switch. VERTINPUT =Y axis,
INPUT = X axis.
ScDsitivity
100
Dv/div.
hput IDpeilarcc
1MA ,ZVo,
applox. 35pF.
Freq|rescy R€6Pdse
MODE
EXT TRIG
DCI DC to 500kHz,
-3 dB.
X-Y PhaaeDiffer€dce
30 o! lessat 50kHz.
Mariorrln l4rtt Voltege
Sameasvertical a:is,
SWEEP
Tt?e
NORM: Triggeled sweep.
AUTO: Sweep
free runs in absence
ot
trigge!.
X-Y Phare Differeoce
30 o! lessat 50kHz.
Maxirrnb l4nrt Voltege
50V dc + ac peak.
SYEEP
TyPe
NORM: Tliggeled sweep,
AUTO: Sweep free lrlns in absence
tligge!. of

SPECIFICATIONS
0
MODEL 1476A
DUA-L-TRACE
Sveep TiEe
0.5 lb/div to 0.5 s/div, 13% in 19 ranges' in
1-2-5 sequence. Vemie! control plovides
fully adjustable s\oeePtime between steps.
SPeep MagnificatioE
X10 (ten tihes)' *5%.
Linearity
f3% all rances.
TRIGGERING
htefltal SFc
V. MODE: Tligger selecteil by Yeltical
MODE switch.
Tliggeled by CH 1 signal.
Triggered by CH Z signal.
Triggered by line voltage.
ExteEnel SFc
ExT: Triggered by signal aPPlied to
EXT TRIG jack.
E:terdal SFc lq'|tt IEPedance
1 MQ tzvo, approx. 35 pF.
Ma:iDnb E:ternal 1ligger Voltage
50 v (dc + ac peak).
Coupling
AC, VIDEO FRAME, VIDEO LINE,
Ttigget Seltsitivity
AUTO! 20Hz to 10MHz: 1 div internal
o! 0.1 V P-Pextelnal.
NORM: 5 Hz to 10MHz: 1 div internal
o! 0,1V P-P
external.
VIDEO: FRAME ot LINE: 1 div intemal
or 0.1 V p-p extetnal.
PROBE ADJI'ST VOLTAGE
0.5v p? J6% square
wave,Positive
polality. Applox. I kHz.
TRACE ROTATION
Electrical, adjustablefrorn front Panel
MODEL 1466A
SINGLE-'TRACE
Sideep TiEe
0.5 l-b/div to 0.5 s/div, t3va in 19 langes, in
1-2-5 sequence. vernie! contlol plotides
Jully adjustable swee? time bet\aeen stePs.
Seeelr Magdfication
Xl0 (ten times), 15%.
Lin€aiity
t3% all langes.
TRIGGERING
htetlal SFc
INT: Tliggered by veltical input
signal.
LINE: Triggered by line voltage.
Eternal SFc
EXT! Triggeled by signal aPPlied
to
EXT TRIG jack.
Erteraal SFc hlirt lDpedance
1 Mn !2%, approx.35pF.
Maxinu.E E(tetnal TrigS€t Voltage
50v (dc + acpeak).
coqrliDg
AC, \,TDEO
FRAME, VIDEOLINE.
Ttigg€t SeDsitivity
AUTO: Z0Hz to 10MHz: 1 div internal
o! 0,1v p-p external.
NORM: 5 Hz to 10MHz: 1 div internal
or 0.1v p-p etternal.
VIDEO! FRAME or LINE: I div intemal
or 0.1V p-p extetnal.
PROBE ADJUST VOLTAGE
0.5v p-p !6% squate\taver positive
polarity. Approx. 1kHz.
TRACE ROTATION
Electlical, adjustablefroDl flont panel.
CH 1l
cH
z:
LINE:

SPECIFICATIONS
cMODEL 14?6A
DUAI-TRACE UODEL 1466A
SINGLE.TRACE
INTENSIIY MODUI.ATION INTENSITY MODULATION
SeDsitivity S€lritivity
TTL compatible. Positive voltage incleases TTL comPatible. Positive voltage increases
brightness, n€gative voltage decleases brightness, negative voltage decreases
blightness. brightness.
IrFt IEp€dance lrFrt ImPedance
Approx. 10 kO. Applox. 10 kQ.
Usable FlequeDcy RaDge Usable Frequency Range
DC to 1MHz. DC to lMHz.
MaritDuo lq'lt Voltage Marimuh lrFtt Voltage
50 V (dc + ac peak). 50 V (dc + ac peak).
POWER REQI]IREMENTS POWER REQI'IREMENTS
1oo/1Zo/ZZ0/240
v
AC tro%, 50/60llz, 100/720/220/240VAC !10%' 50/60Hz'
applox.41w. apprcx.36w.
DTENSIoNS (wJIxD) DIMENSIoNS (wrl{tD)
10-1/4 x 6-3/8 x 15-3/4" (260 x 160x 10-1/4 x 6-3/8 x 15-314" (260
x 160x
4oomm). 4oomm).
10-1/477-1/8x 18-1/8"
(260
x 180
x 10-1/4 z?'7/8 r 18-1/8'(260x 180x
460mlr|)including all projections. 460 mm) including all plojections.
WEIGFT
Approx. 18-1/2 lb (8.4kg). WEIGET
Applox. 18lb (8,1kg).
ENVIRONMENTA'- EIOVIRONMENTAL
Within SpecilicatioD.s Yithin Specilicationa
0o to +40o
C, 85%Elax.lelative huhidity. O" to ++oo
C, 85%max. relativ€ humidity.
Full ODetatioa Fnll OpetatioD
ooio +5Oo
C,90% max.relativebumidity. Ooto +5Oo
c, 9O7ohax. lelative huEidity.
ACCBSSORIES SUPPIJED ACCESSORIES SUPPLIED
Two lo:1/direct plobes. One lo:1/direct probe.
Sparefusesi one0.8 A, one0.5 A. spare fuses: one0.8 Ar one0.5 A.
Instruction roanual. Instruction flanual.
ScheEatic diag?am
& parts list. SchematicdiaS"arD& patts lisi.

COIITROLS AND INDICATORS
MODEL 14?6A
DUAI-TRACE
Charrel 1 i POSIIION C@trol. Rota-
tion adjusts vertical position of clannel 1
tiace. IJIX-Y operation, lotation adjusts
veltical position of display.
Chalrel l.LTS/DMcrDttoL Vertical
attenuator Io! channel 1. Plovides step
adjustEent of veltical sensitivity, Igle,l
chajlnel MRIABLE cortrol is set to
CAL, vertical sensitivity is calibrated in
12 steps tfolt| 1 nv/div to 5 V/div, For
X-Y operation, provides step adjustoent
of vertical (Y axis) sensitivity,
MODEL 1,176A'
DUAL-TRACE
Fip. 1. Front Panel Contlols and Iirdicators.
MODEL I,166A
SINGLE-TRACE
MODEL li166A
SINGLE-TRACE
V€ctical i POSIrION Coltrot- RotatioD
adjusts vertical position of tface. In X-Y
operation, lotation adj$ts ve.tical
position of display.
VOLTS/DW C.dbol. Veltical atten-
uator. Ploviiles step adjustbent of
vertical sensitivity. V/hen VARIABLE
contlol is set to CAL, vertical sensitivity
is calibrated in 12 steps from 1 rhv/div
to 5 V/div. t-or X-Y operation, plovides
step adjustoert of vertical (Y axis)
sensitivity.
l.

CONTROLS AND INDICATORS
(
3.
3.
MODEL 1,176A
DUAL-TRACE
CharDel I.RIABLE C@t oL Rotation
plovides fine control of chadrel 1velti-
cal sensitivity. In fuUy clockwise (CAL)
position, vertical attenuator is cali-
brated. For X-Y operation, this contlol
selves as fine vertical {Y axis) gain
adjustment.
Charre! 1 AC-GNIFDC S*itcb- Three
position leve! s\ditch selects channel 1
AC;
MODEL 1466A
SINGLE-TRACE
VARIABI.E Control. Rotation provides
fine contlol of vertica-l sensitivity. In
fully clockwise (CAL) position, veltical
attenuato! is calibrated. For X-Y opeF
ation, this control serves as fine veltical
(Y axis) gain adjustment.
AC-GND-DC Svitcb- Tbree-position
Ieve! switch selects veltical input coup-
Iing:
AC: Input capacitively coupled! dc
component blocked.
GND: Opens signal path and grounds
input to vertica.I amFlifie!.
This plovides a zero-sigtral,
zelo-volt dc base line for ref-
DC: Iflput direct coupled; both ac
and dc component oI wavefou
displayed.
4.4.
Channel 1 input capacitively
coupledi dc componentblocked.
6.
GND: Opens channel 1 signal path and
glounds input to vertical amp-
lifie!. This provides a zero-
signal, zero-volt dc base line
for refelence.
DC: Channel 1 input ditect coupled;
both ac arld dc component of
waveform displayed.
ChaDDel I INPUT Jach- Channel 1 ve!-
tical input conn€ctol; Y axis input con-
nector for X-Y opelation. Maximum
input voltage is 500 volts peak-to-peak;
250 volts dc + ac peak.
ChaDlel Z VOLTS/DM@IIoL vertical
attenuato! fo! chan[el 2. Plovides step
adjustment of veltical sensitivity. V/hen
chanrel 2 VARIABLE cortrol is set to
CAL, veltical sensitivity is caliblated in
12 steps from 1 mv/div to 5 V/div. Fo!
X-Y opelatio& this contlol plovides step
adjustment of horizontal (X axis) sensi-
tivity.
CbaDnel Z VARIABLE Coltrol. Rotation
ptovides fine contlol of channel 2 verti-
cal sensitivity. In fuUy clockwise (CAL)
position, channel 2 attenuato! is cali-
brated. Fo! X-Y opelation, this control
serves as fine horizontal (X axis) eain
adiustment.
VERT INPITT JacL Vertical input con-
necto!; Y axis input connecto! for X-Y
opelation. Maxirnum input voltage is 500
volts peak-to-peab 250 volts dc + ac
peak.

COIfIROLS AND INDICATORS
MODEL 1476A
DI'AL-TRACE
8. Chanel Z AC-GNI>DC Swit(i- Three'
position lever switch selects channel Z
Channel 2 input capacitively
coupledidc component
blocked.
GND: Opens channel 2 signal path and
grounds input to vertical amP-
lifie!. This plovides a zelo-
signal, zelo_volt dc base Iine
fo! !efe!ence.
DC: Channel 2 input direct coupled;
both ac and dc component of
wavefolrrr displayed.
Chrnlel 2INPltT Jact- Channel 2 ver-
tical input conrecto?; X axis input con-
necto! fo! X-Y operatioD. Maxilr|um
input voltage is 500 volts peak-to-peak;
250 volts dc + ac peak.
Cg Z IN'g Purhbutton SwitcL Channel 2
signal invelted with butto! engaged; Eon-
inverted with button leleased. Provides
subtraction of CH I - CH 2 when used
with ADD mode.
CleDnd 2 i POSIION/ <> X-Y Cortol.
Rotation adjusts veltical position of
channel Z trace. In X-Y opelationt
lotation adjusts horizonta.I position of
dbplay.
MODE S*itch Arsebbly. Interlocking
pushbutton switch assembly selectsbasic
operating mode of oscilloscope; pressing
a button leleases the previous selection:
cH l: Only the input to channel I is
displayedasa single tface.
CII Zt Only the input to channel 2 is
displayed as a single tlace.
ADD: Enabled by simultaneously
plessing CH 1 and CH z but-
tors; the inputs flotr| chat']tel I
anil c}lannel Z are a.lgeblaically
added and the sum is displayed
as a single tlace.
MODEL 1466A
SINGLE-:IRACE
/f\
l!\
10.
11.
1?,.

CONTROLS AND INDICATORS
c
13.
I3.
MODEL 1476A
DI'AL-TRACE
ALT: Dual trace disPlay of cha$el 1
and channel 2 inputs. Alte!-
nate sweep is selected legard-
less of 6weep tiDce (channel 1 is
displayed during one sweeP,
channel Z duling the [ext
sweep).
CHOP: Dual tlace display of channel 1
and channel Z inputs, ChoP
sweep is selecteal regatdless of
svreep time (swee? is chopped
itrto segments and svtitched be-
tween challflel 1 alld channel 2
to display both traces).
POIgER Switch. Counterclockwise ro-
tation (OFF position) tuns off oscillo-
scope. Clockwise lotatior turns on oscil-
Ioscope.
Pilot Light. Lights when oscilloscope is
tuhed or1.
GND TerEinavBiDiting Post. Earth 6nd
chassis ground.
PROBE AI)J Tcleinal. Provides 0.5 volt
p-p squate wave signalr approxihately
l kHz; useful for probe comPensation
adjustm ent.
TRACE ROTAIION Cont ol.
FOCITS C@lrol.
INTENSITY C@boL Clockwise rotation
increases brightness of tlace.
As'flc (AstigmatbE) Conbol.
EXT TRIG JacL Irrput teldlinal fo! ex-
telnal tligger signal. MaximuE inPut
voltage is 50 volts dc + ac peak.
MODEL 1466A
SINGLE-'TRACE
POWER Ssitch. Countelclockltise !o-
tation (OFF position) turns off oscillo-
scope, Clockwise rotatiofl tu!I$ on oscil-
loscope.
Pilot Light. Lights when oscilloscoPe is
turned on.
GND T€rtfinat/BiDdiDg PoBt. Earth and
chassis ground,
PROBE ADJ Terminet. Protides 0.5 volt
p-p square wave signalr approximately
I kHz; useful for probe compensation
adjustment.
TRACE ROTATION CodhoL
FOCUS Ccmbol.
INTENSIrY Coltro|. Clockwise rotation
incleases blightness of tlace.
ASIIG (AstigratisE) Coot'ol.
EXT TRIG JacL Input terDinal tor
external trigger signal. Input terminal
for external hoiizotrtal input in X-Y
operation. Maximum input voltage is 50
volts dc + ac peak.
14.
15.
16.
14.
16.
18.
r9.
18.
19.
20.
zt.
zo.
zt.
/l\

COrfIROLS AND INDICATORS
MODEL 14?6A
DUAL-'TRACE
2e. I^gtrEL/pIJLL sLOpE (-) C@boL Rota-
tion perfolus trigge! LE1EL adjustEeDt
furctioq pusb?ull actiot perfotEts
SLOPE
s$ritchf
unction:
LEIEL! Rotation adjusts
point otrwave-
forE where tliggering occuts,
The (-) direction equalsa Eore
rEgative tdggering poirt and
the (+)direction equals a Eore
positive tdggedtrg point, The
LEVEL contlol has no effect
\phenllDEO FRAME or \aIDEO
LINE trigge! couplingis rjed.
SLOPE: Sweepis triggered on positive-
going slope of sy:rc waveford
when pushed in, on negative_
going Elope \rhen pulled out
(PULL SLOPE
-).
Zf. COUPIING Seitch. Tbree.positioD lever L3.
s\aitchselects coupliDg
fo! sync t!igge!!
tdoDEL 1466A
SINGLE-TRACE
IJYEL/PUII sLoPE (-) conbol. Rota-
tion perfolms tligger LEVEL adtiustbent
ftmction; push-pull action perforos
rL\JrE awltcn tunctron:
LEVEL: Rotatio! adjusts point on wave-
foru whele triggeling occurs,
The (-) dilection equals a Eole
negatiee triggeriDg point and
the (+) dilection equals a lDore
positive triggeling poirt. Tbe
LEI|EL control has Do effect
when VIDEO FRAME oi VIDEO
IjNE tligger coupliDg is u.sed.
SLOPE: Sweep is tliggered ol1positive.
going slope of sync wavefo D
when pushed ini on negative-
goidg slope vrhen puued out
(PULL SLOPE -).
COUPIING Sritc.b- Three?orition lever
switch selects coupling for sFc trigge.:
AC! Tligge! i6 capacitively coupled;
this is the most coDrDonly used
position for all sigaals except
composite video,
FRAME! Vertical sFc pulses of a coE-
posite yideo signal are selected
fo! tliggelidg. LEVEL control
ha.s
Doeffect.
LINE! Holizontal slDc pulses of a
composite video signal aie
selected for triggeting. May
also be used for non-video sre-
nals, LEVEL control has ao
effect.
SOITRCB SsttcL Three-position leve!
switch selects sweep triggering soulce:
INT| The wavetorm being observed
is uaed as sFc tligger.
LINE| Sweep is tliggeted by line
voltage (50/50 Ez).
FRAMEI
AC: Trigge! is capacitively conpledi
this is the host cornDonly u.sed
position for all signals except
coEposite ?ideo.
Veltical sFc pulses of a corn-
posite eideo signal are selected
fo! triggeting. LELEL control
ha.s
Doeffect.
LINET HolizoDtal sync pulses of a
coEposite video signa.l ate
selected fo! triggering. May
also be used fo! noE-video siF
nals. LEVEL control has no
affa^+
SOURCE S*itch. Five-position leve!
switch selects sweep triggeling soulcel
V, MODE: The trigge! source is deteF-
mined by veltical MODE
selection. SFclEonization is
Eot possible in CHOP rlrode,
sitrce tte chopping signal
becoEes the triggei,
zz-
A.
71.
10

CONTROLS AND INDICATORS
0MODEL 1t176A
DI'AI..TRACE
CH 1r Sweep is triggeled by channel I
sigDal rega-rdless oI veltical
MODE.
CH Z: Sweepis triggered by cbannelZ
signd legardless o{ veltical
MODE,
LINE: Sweep is triggered \ line
voltage (50/50
Hz).
EXT| Sweep is triggeled by signal
applied to EXT TRIG jack.
TRIG MODE Switcb- Tbree-positior
leve! switch selects tliggedng model
'AUTOT Tliggered sweep opelation
when tdgger signai is present,
automatically generates sweep
(free runs) in absence of tligger
signal.
NORM: Nolha-I triggeled sweep opei-
ation. No trace uless propet
trigger signal is applied.
X-Y! X-Y operation. Channel 1
input signal produces veltical
(Y axis) deflection, channel 2
input signal produces horizontal
{X axis) deflection. Dudng
X-Y opelation, the vertical
MODE selection switch has no
effect.
Sweep TiEe VARIABLE Codttol. Fine
sweep time adjustment. In extreme
clockwise (CAL) position, sseep time is
calib!ated.
SWEEP TIME/Dry CoDtroL Coarse
holizontal sweep tiEe selecto!. Selects
calibrated sweep tioes of 0.5 ls/div to
0,5 s/div ir 19 steps when sweep time
VARIABLE contlol is set to CAL.
Horiz@td <> POSITION/PULL X10 MAG
CoDtroL Rotation adjusts lorizontal
position of tlace. Rotation has no effect
in X-Y operation. Push-pull switch
selects X10 sweep magnification (PULL
X10 MAG) when pulled out. Do not use
X10 MAG during X-Y opelation.
MODEL 1466A
SINGLE-TRACE
EXT: Sweep is tliggeled by signal
appliedto EXT TRIG jack.
25. TRIG MODE Svitch- Three-position
leve! switch selects triggering rrlode,
AUTO: Triggeled sweep opelation
when trigger signal is present,
automatically generates sweep
(Iree !uns) in absence of trigger
signal.
NORM: Nolmal triggered sweep ope!-
ation. No trace unless ploper
trigger signal is applied,
X-Yt X-Y opelation. Vertical input
signal produces verticat (Y
axis) deflection, EXT TRIG
input signal ploduces horizonta.l
(X axis) deflection.
I
2'6.
26.
27.
S?eep fiEe VARIABLE C@trol. Fine
sweep tilne adjusttlent. In extreme
clockwise (CAL) position, sweep tirlle is
calib!ated.
SWEEP TndE/DMonttoL Coarse
holizontal s\reep time selector. Selects
calibrated sweep times of 0.5 lb/div to
0.5 s/div in 19 steps when sweep tiltle
VARIABLE control is set to CAL.
Eoriz@tal <' POSIIION/PUII X10 MAG
C([trol. Rotation adjusts holizontat
position of trace in both sweep and X-Y
operation. Push?ull switch selects X10
sweep bagnification (PULL X10 MAG)
when pulled out. Do not use X10 MAG
during X-Y opelation.
I
?,4.
11
za.

CONTROLS AND INDICATORS
Fis. 2. Rear Panel Contlols and Indicatols.
MODEL 14764
DUAT.TRACE MODEL 1466A
SINGLE-TRACE
29. Z Alrls INPITT Jack External iDtensity 29. Z Ajr's INPUT JecX- External intensity
modulatior inputi TTL co@patible. A bodulation input; TTL compatible.
Positive voltage increases blightn€s", A Positive voltage increases brightness,
negative voltage decreases blightness. [egative voltage decleases bdghtness.
Maximum input voltage is 50 volts dc + Ma,<imuEr input voltage is 50 volts dc +
ac peak, ac peak,
30. Fuse Eoliler. Use 0.8 A fuse for 100 o! 30. Fr$e Holilec. Use 0,8 A fuse for 100 or
120 VAC opelation, 0.5 A fuse for 220 or 120 VAC opelation, 0.5 A fuse tot ZZ0or
240VAC operation. 240VAC operation.
tz

IOPERATING INSTRUCTIONS
0
SAFETYPRECAUIIONS
wlRMl{G
The follo\uing preccutions muat be ob-
sereedto prerentelectricshock
1. Wh€n the oscilloscope is used to Dake
lneasurements in equiprlent that con-
tains ligh voltage, thele is always a
certain amount of daJ}gel from electdcal
shock, The person using the oscillo6cope
in such corlditions should be a qualified
electronics tecbnician o! othelwise
tlained and qualified to wolk in such
circumstances. Obselve the TEST IN-
STRUMENT SAFETY recommendations
listed on the inside irodt cove! of this
manual.
2. Do 'lot operate this oscilloscope with the
case reooved uless yotl are a qualified
service teclhiciat. I{igh voltage up to
2,000 volts is present wlen the unit is
operating with the case removed.
3. The glound wile of the 3-wire ac powe!
plug places the chassis and housing of the
oscilloscope at earth grormd. Use only a
3-wi!e outlet, alld do not attempt to
defeat the ground wire connection or
Iloat the osciuoscope; to do so may pose
a great safety hazard.
4. Special plecautions are lequired to
measure or ob6erve litre voltage \tave-
folEs witl any oscilloscope. Use the
followiflg procedurer
a. Do rxot connect the groutrd clip of
the !!obe to eithe! side of the line.
The clip is aheady at eartl gtound
and toucling it to the }lot side of
the line may nweldn or "disinte-
graten the plobe tip arld cause pos-
sible injuly, plus possible damage to
the scope or probe.
b. Inselt the probe tip into one side of
the line voltage receptacle, then
the othe!. One side of the lecep-
tacle should be nhot" aid produce
the wavefolm. The othe! side of
the receptacle is the ac leturn and
no waveforln should lesult.
EQI'IPMENT PROTECTIONPRECAUTIONS
C,AUIION
The
followingprecoutiom
uill helpavoid
domageto the oscilloscope,
1. The powe! tlansfolme! of this instlu-
ment may be wiled to operate frorn
nominal line voltage of 100, lZ0, ZZ0, or
240 VAc, 50/60 Hz. Be sule the line
voltage selection is collect before
applying power. Also, make sule the
colrect fuse value is used, corresponding
to line voltage as follows:
100VAC operation - 0.8 A.
120 VAC operation - 0.8 A.
ZZ0VAC opelation - 0.5 A.
240 VAC opelation - 0.5 A.
2. Neve} allow a small spot of ligh b I-
liance to remain stationary on t}le scleefl
fo! more than a few seconds. The screen
r:ray become pelmalently bumed. A spot
wiII occrD only when the scope is set up
fo! x-Y operation ard lro signal is ap-
plied, Either reduce the intensity so the
spot is balely visible, apply signal, or
switch back to normal sweep operation.
0
13

OPERA'IING INSTRI'CTIONS
3. Do rot rest objects o!1top of the oscillo-
scope or otherwise obstruct the ventilat-
ing holes ia the case, as this will inclease
the intemal tehperatue.
Excessive voltage applied to the input
jacks rbay damage the oscilloscope. The
rDaxihum latings of the inputs are as
follolps:
l€RT INPUT (single-tlace @odel):
500 V p-p; 250 V dc + ac peak.
CE 1 and CH 2 (dual-tlace lDodel):
500 V p-p; 250 V dc + ac peak.
EXT TRIG INPUT (both models)l
50 V dc + ac peak.
Z AXIS INPUT {both bodels)l
50 V dc + ac peak.
Never qpply extemdl roltage to oscillo-
scope dttqt laclc.
Alrpays couect a cable froI! the glound
telmidal of the oscilloscope to the chas-
sis of the equipDrent unde! test. Without
this plecaution, the entire current for
the equipment under test Day be ibawn
through the prcbe clip lead under celtain
cilcumstances. Such conditions could
also pose a salety lazard, which the
ground cable will plevent.
Tbe probe glound clips a.re at oscillo-
6cope glound and should be connected
only to the coEdron oi the equipmeEt
Erder test.
point near the point of Eeasureoent. Do
not lely solely on ar external ground
wire in lieu of the probe gtotmd clips as
undesiled sigtrals rtlay be induced.
Avoid the following operating corditionst
a. Dilect sunlight,
b. High teEperature and burnidity,
c. Mechalicalvibration.
d, Electlical noise and stlong llagnet-
ic fields, such as near large motols,
power supplies, transforDers, etc.
Occasionally check trace rotation, probe
compensation, astigrnatism, and cali-
bration acculacy of the oscilloscope
uaing the procedu.es found in t}le MAIN-
TENANCE section of this manual,
The cilcuit loadilg effect of the PR-40
Probe (which is tnical of Drost 10!1/dit-
ect probes) is 10 MO and 18 pF in the X10
mode, compared to 1 MQ and 100 pF iD
the DIRECT Drode. Use X10 attenuation
wheneve! possible fot lr|inirruE cilcuit
loading and improved high frequency
response, The DIRECT position is re-
quiled only when the waveforms to be
observed are below 20 mV !F'p.
Terminate the output of a signal gene!-
ator in its chaiactelistic impedance to
EiniEize ringing, e+ecially it the signal
has fast edges such as square waves o!
pulses. For exabple, tbe typical 50 O
output of a square wave gerelator should
be teuiDated into a.nextemal 50 O rer
minatidg resisto! anil connected to the
oscilloscope l'ith 50 Qcoaxial cable.
Probe compensation adjustrnert Datches
the plobe to the input ot the scope. Fo!
best lesults, corapensation should be
adjusted initially, ther readjusted srhen a
plobe from a different oscilloscope is
used. On dual-trace oscilloscopes, tbe
salDe probe should always used lrith
chamel 1 arrdchannel 2 iesDectivelv,
z.
OPERATINGTIPS 6.
me f oltowing rccommendattotl,swill help
obtain tte best peiomtonce fipm thg osclllo-
scope.
1. Always use the ploie groundclips for
besttesults,attachedto a circuit ground
14

OPERAIING INSTRUCTIONS
I
Fig. 3. lnitial Control Settings.
IINTTIAL STARTING PROCEDURE
Until you familiadze you$elf with the use
of all codtrols, the 6ettings shown in Fig. 3
Eay be used as a reference point to obtain a
tlace on the CRT in prepa.lation for wavefolE
1. Turtl the POWER contlol clockwise; the
unit will be tulned on arld the pilot light
will be illuhinated.
Z. Set the TRIGGER MODE switch to
AUTO, and on the dual-trace nodel, set
the veltical MODE switch to CH 1.
3. A trace should appear on the CRT.
Adjrlst the tlace blightness witl the
INTENSITY control, and the tlace sha.rp-
SINGI;B TRACE DISPLAY
The following plocedule lnay be used fo!
the single-tlace model, or fo! single-tlace
operatioE of the dual-trace Drodel. Eithe!
cha.nnel 1 or chamel 2 may be used fo! single-
trace opelation on the dual-trace Dodeli the
advantage of using channel Z is that the waee-
folm or tbe display can be iDvelted if desired
with the CH 2 INV switch. (hocedures within
parentheses are for the dual-tlace model.)
1. PelforE the steps of the 'Initial Statting
ProcedrEe'. (Set the MODE switch to
cHz).
2. Connect the plobe to the I'ERT INPUT
jack (CIt 2 INPUT jack).
3. Connect the plobe ground clip to the
chassis o! common of the equipDent
urder test, Connect the probe tip to the
point of measurement.
4. If no waveforEs appear, iDcrease the
sensitivity by turning the VOLTS/ DIV
cofltrol (CH 2 VOLTS/DIV contlol)
clockwise to a position that gives Z to 6
divfuions vertical deflection.
5, The display olr the CRT Eay be un-
syncblodred. Refe! to the "Triggering'
paragraphs in this section for procedures
on setting tliggering and sweep time
controls to obtain a stable display show-
ins the desiled nuDber of waveforms.
V.
MODE
INT
CENTEB CENTER
l5

OPEX..-IINGINSTRITCUONS
DUAL 1RACB DISPLAY
(Dual-Trace Model OnD
In obselqing srmulteneous waveforms on
channel 1 arld 2, the wavefo ns ale usually
lelated in frequeDcy, or one o! tbe waveforms
is sFchroaized to the othe!, a.Ithough the
basic frequencies ale different. If the tFo
waveforEs have tro phase or frequedcy rela-
tionship, there is seldom leason to obsetve
both wavefolrns siEultareously. However,
with V, MODE triggeling, eveD two waveforEs
not related in frequeflcy o! period can be
sibultaneously viewed.
1. Connect plobes to both CH I and CH Z
INPST j acks.
2. Connect the Found clips of the plobes to
the chaseis o! corlmon of the equipBent
rmder test. ConDect the tips of the
plobes to the two poiats ir the citcuit
whele waveforiDs are to be Eeasureil.
3. In the ADD uode (both cH I and CH Z
buttons engaged), the algebraic suE of
CE 1 + CH Z is displayed as a single
trace. Whe! tbe CH 2 INV button is
engaged, the algebraic difference oI
u- l - ufl zls olsDlaveo,
4. Ilx the .a.f,f *oa., orr. s$reep displays the
channel 1 sigDal anil the next sweep dis-
plays the channel 2 signal ilr an altemat-
ing sequence. Altemate sweep is no!m-
ally used fo! viewing high-ftequency or
high-speed \ravefoiEs at sweep tiEes of
1 ds/div and faster, but may be selected
at a.Ily sweep tiEe.
5. In the CHOP mode, the s\peep is chopped
at an approxieate 250 kl{z late and
ewitched between channel I and chan-
Del 2. chop sweep is nolEally used for
low-flequency o! low-speed $ravefolms
at sweep times of 1 ms/div arld slower.
a, If chop sweep is used at sweep
tiDes ol 0.2 Ers/div and faster, the
chop late tecoEea a significant
pottion of the sweep and rnay be.-
coDe visible itl the displayedwave-
forr!. Eorreve!, you eay select
chop sweep at any sweeptihe fo!
+ecial applications. For exaEple,
the only way to obselve sidultan-
eous eveats on a dual-trace scope
at any sweep rate is with chop
sweeP.
b. Note tbat s]'nchlonization of the
display is not possible in the CHOP
hode of opelation with the tligget
SOURCE switch set to V. MODE.
because the trigge! source becomes
the chopping signal itself. Use ALT
mode instead, ot select a ttigger
SOURCEof CH 1 or CH 2-
6, Adjust the CII 1 and CH 2 POSITION
coDtrols to place the channel 1 trace
above the channel 2 trace.
?. Set the CH I and CH 2 VOLTS/DIV con-
tlols to a position that gives 2 to 3
divisions of vertical deflection for each
trace. If the display on the scre€n is
unsyncbronized, refer to tbe 'Tliggedng'
paragraphs in this section of the lnanual
Jo! procedures fo! setting triggedng and
sweep tioe coutrols to obtain a stable
display sho\ring the desiled nuhber of
rraveforrrs.
TRIGGERING
Venatility in sFc triggeling provides the
ability to obtain a stable, jitteFfree display
for most wavetotEs. The proper settings
depend upoD the t'?e of \ravefolEs being
observed and the type of Eea$r.lerDent de-
sired. Arr ex?lanation of the various contlols
whicb affect sFchronizatio! is given to help
you select the ploper settiog ove! a wide
lalrge of conditions.
TRIG MODE Sritci
1. The NORM position plovides normal
tliggereil s$reep opelation. The sweep
lernai'ts at lest until the selected trigge!
source signa.l closses the threshold level
set by the LEVEL control. The trigge!
causes o$e sweep to be generated, after
whicb the sweep again lernains at rest
until tliggered. In the NORM position,
there will be no trace rEless an adequate
ttigger signal is plesent, (Ir the ALT