Fairchild 766H SERIES Instruction Manual

Page 1
UP
766H
SERtES
OSCTILOSCOPE
lnstruciion
Monuol
Seriol No.
INSTRUMENTATION
5o soMEiSET PTACE,
CtlFtON, N. J. Or0t5
@
1965 Foirchild
Comero
ond lndrument Corp.
Monuol No.
6704 5893
Page 2
Section
Title
I. TECHNICAT SU'IAIYIARY
l-l Introduction l-2 Features
2. OPENATINGINSTRUCTIONS
Introduction Preliminary
Information
Power
Requiremenm
3.
CIRCUIT DESCRIPIION
Introduction
CRT
Circuit .....
l-3 List of Recommended Accessories ............
l-4 Technical Sur4mary
(Specifications) ...
l-5 Type
765MH
Technical
Data ........................
List
List of
Recommended
Vendors
rrruslRAiloNs
Title
Fairchild
Type
766H Transistorized
Oscilloocope
Type
765H
Portascope
Page
6-l
6-5
6-7
Page
3-l 3-l
3-1
J'J
c-J
2-l
2-2
2-3 2-4
2-5
2-6
3-l
3-l
5-J
3-4
2-t
2-l
2-l
r.3
l-3
r-7
4-t
4-1
4.1
4-l
1-0
r-2
Operating Instructions
-----,-
---
..........
2-l
Beam Brightening
Switch ........ ...... .................
24
Operator's Maintenance
Inlormation
...
2-4
Type
765 Portascope
with Complerc
Carrying
Case
.......................
........-...........
Type
766H Bench Model
t4
l-5
l-6
t-2
1-2
t-2
l-5
Circuit
Description
for Low Voltage
Regulated
Supplies
Type
70854 Rack
Slide
Set to
g0o
with
Type
767H Oscilloscope
Installed
l-7
Typ€
767H Oscilloscope
Showing
Clearance Dimension
for lnsta]lla-
4. PERFONMANCE
ASSURANCE
TEST
4-l Maintenance
Check
to Assure
Pertormance
.............
Introduction
Removal and
Normal Sweep
Unblanking
Fast Single
Sweep Unblanking
and
Type
Moundng
vDe 767H
Type
767H
Oscilloscope Showing
Clearance
Dirr.ension
for
Insta'ila-
tion
of Type
7085A Rack
Slides
(Standard
Insrallarion)
Type
765MH
Type
766H Solid
Front-Panel
FaFacilities
State
Oscilloscope,
Type
766H Over-all
System
Func-
Diagram
vpe 766F
tional
Block
Diagram
Rear View
Showing
Transistors
and cRT
Rear
View Showing
Fuses,
Switch
and Diodes
l-8
t-9
2-1
2-3
3-l
E-2
5-7 Installation
Instructions
5-8 Installation
Insructions
l-6
1-6
t-7
Checking the
Power
Supply ............
.
....
Check Ripple
of Low-Vbltige
Type
766H Calibrator
Display ....
. ...
2-3
SinEle
Sweeo Unblankino Vs
'
Supplies
...............
Calibrator
Check
Single
Sweep
Unblanking
Vs
Sweep Speed
ype
766H Ser
Checking
CRT Geometry
Adjusrment...
4-2
Type
766H Series
*200V
and
*100V
Regulators,
Functional
Block
5. iIAINTENANCE
AND
RECATIBRAIION
Diagram
ype
766F
Type
?66H Series
*50V
and
-50V
Regulators,
Functional
Block
4-3
4-4
4-5
5-l
Introduction
-..................
E-l
5-2 Removal
and
Replacement
of
parts.....5-l
5-3 Cathode-Ray
TuBe
Replacement
............
b-Z
5.4 Servicing
Hints
......
.. ................
... ...... ..
b-2
5-5 Trouble
Shooring
the
Power
Suppty
....
5-3
5-6 Trouble
Shootin"g
rhe CRT
Ciidit ..
5-B
5-7
Test
Equipment
Required
for
Service
Adiustments
.........._
............
b-+
5-8 Adlusting
th6 Low-Voltage
power
Supplies..
......................
b-4
5-9
High-Voltage
Adiusrment
.........
........
b-4
5-10
CRT
Adjustmen6
..... .
b4
5-ll
Serring
Main
Frame
Capaciry
for
LV
and HV
Series
Ohty .....
. .......
f-tO
5.12
Type
7062
CRT
Terminaiion
_
-
.
-
Nerwork
(HF
Series
Only) .
.......
...
S_10
5.13 Supplemenr
ior Type
766EI Mod
I02
Oscilloscope
......"
. ... .
5-13
3-2
8-2
5-l
5-l
5-2 0-c 5-4
Top
View
o[ Chassis
Showing
Test
Points.
Transistors and
Adjustments
..............
5-7
5-5 Right
Oblique
View Showing
X &
y
Peaking
Trimmers
. .
...
-
..
. .........
5-8
5-6 Left
Oblique
View
Showing
5-6 L*
Oblique
View
Showing
Transistors,
Swirch
and Adjustment...
E-9
5.11
5-12
5-9^
Type^7062
I-nterconnecring
Diagram
....
5-13
5-10
Test
Serup
for Peaking
Aljusti.rent
5.14
TABLE
OF
CONTENTS
Page
l-l
l-1
Section
Title
6.
PARTS tI5I5
AND
SCHEiAAIICS
6.4
Electrical
Parts
68 Spare
Parts
List
Figure
1-l
t-2
1-3
Type
767H Rack Modei
tion
of Type
7l
and
Tvoe 7078
70E5A Rack
Slides
Kit for Flush
Page 3
section
1
-technicol
summory
t
r0cus
C}
ASIG
I-O
Figute l -l - Foitchild fype 766H
frcnsistorixed Oscilloscope
Page 4
sEcTtoN r
TECHNICAT SUfiTiAARY
l.t INIRODUCIION
(Figurcr
l-2 io l-51
The Fairchild Types
765,
766,
and 767
Family of
Oscilloscopes are available
in three basic
form factors:
bench, rack, and
portable models. The Portable
Models are identified
by the TyP€ 765
numerical
Series; the
Bench Models by the Type 766
numerical
Series, and the Rack-mounted
Models by the Type 767
numerical
Series.
In addition, there are alphabetical
suffixes appended
to the numerical series to identify special
electronic
circuits.
The suffix H denotes the
high-voltage oscillo-
scope
with an accelerating
potential of
l3 Kv. The low
voltage option is 5 Kv and these series oscilloscopes
are
identified by
the absence of the
H alphabetical suffix.
The
suffix
H/F denotes the high-voltage
high-fre-
quency
model. These
models are provided with
the
Type
7062
CRT Termination Network
to enable them
to accommodate the Type
79-024
DC to
100 Mc
Plug.in
Amplifier.
The
suffix
M
denotes the
militarized
model. Further details Ior all of the
models are
listed
in the Specifications.
Since the electrical circuits are
identical in all
models
except
for minor difierences,
discussion will
be
confined to the Type
766H
Series
Oscilloscope.
All ref-
erences to the
Type
766H
Series
will
be
equally
appli-
cable
to the
other models unless otherwise
indicated.
To simplify discussion, the Type 766H
Series Oscil-
loscope may be categorized
into three
basic Series:
(l)
Low-voltage, (2)
High-voltage, and
(3) High
Frequency.
l. The following models comprise
the low-voltage
Series:
Type
765, 765M,
766, 766M,767,
and 767M
2.
The following
models comprise the high-voltage
Series:
Type
765H, 765MH,
767MH
3. The following
models
quency
Series:'
766H, 766MH,
767H,
comprise
the high-fre-
Type
765H/F, 765MH/F,
766rI/F, 766MH/F,
767H/F, A 767MIJ/F
rNore.'
These
oscilloscopes
are electrically
identical
to the high.voltage series
except for the addition of
the
high-frequency
CRT
Termination Network.
Separate manuals are
provided for each of the plug-
in units. If desired, these
manuals may be inserted into
the
same
binder
supplied
with
your
Indicator unit,
I.2. FEATURES
The Fairchild Type 766H
Family
of Oscilloscopes
consists
of an Indicator
Unit and any two of a number
of
available
plug-in modttles. The Indicator Unit con-
tains the power supplies, a
cathode-ray
tube with asso
ciated circuitry,
and an
internal
amplitude
calibrator.
The plug-in modules take the place of the vertical
and horizontal deflection
systems
of
a conventional
oscilloscope, and their outputs are connected
directly
to the deflection
plates of the cathode-ray tube.
All
plug-ins
in the
Type
74-00 and 76-00
Series may
be used universally in
the
oscilloecope.
The
plug-in
rnodules may be
selected
to give a degree and type of
performance demanded of them
by
the
particular ap-
plication
for which they are to
be
used.
.
l3 Kv accelerating
potential
(low-voltage
option:
5 Kv)
o
Quatity
display area of 6
cm by l0 cm
o
Three basic Main Frames available;
Portable
(Type
765),
Bench
(Type 766)
and Rack-
mounted (Type 767)
o
Silicon
solid
state circuitry
o
Dual Plug-in capability (DC to 100 Mc) with
all
High Frequency or
H/F Models
o
Z-axis input provided on all bench and
rack-
mounted models
o
Illuminated internal graticule optionally
avail-
able
o
Silicon transistors and fully regulated electronic
power supplies, assure
maximum drift stability
and long-term reliability
t -l
Page 5
section
I
-technicol
summory
..-
PHOTOGRAPHS
OT BENCH, RACK AND PORTABTE MODEI.S
Figwe
l
-3-
fype
765 Porros(ope
Wilh Complele
Corrying
Cose
Figure I
-5.
fype 767H Rock
Model
Figure
l -4.
Itpe
766H Bench
Model
Figwe I -2.
fype 765H
Portos(ope
rif-or
-i
c}
fi;
@
-
),-
I
l:"
c,l
,
J
4:J:
/,-A)
t-2
Page 6
\-
t -3. tlST
OF RECOIyI^'IENOED
ACCESSOTIE
Typr
or
Pqrt Numbcr
Dcrcription
AITENUATOR
PROBES
(10:l
tcrminoied in BNC type
conncclorl
12?0 10M.
l0
pf;4-ft
cqblc
1298 l0M.
14
pf;
8-ft coblc
1299 l0M,
12
pf;6-ft
coblc
799$ l0M.
7
pf;
4-ft
coblc
7999r l0M,
9
pf;9-ft
cqblc
t
For
use
wiih lypc
79-O2A Dsol Trocc DC to IOO M€
Amplificr.'
COTOR
FITTERS
,t800
5861 Amber
for
P7
screen
4800 5862 Blue
for Pl I or PZ screen
,1800
5863
Grecn for P2 ond P3l screen
4800
610l
Nsutrql,
Girculqrly
polorized
4501
0,152 Anliporollox
scole
SCOPE
TRAVETERS
&
RACK
STIDE
Top
Troy: 103/a inches x 22th inches;
26
Yr
inches from floor
Top
Troy: 17.1 inches x 22th inchcs;
32th inches from floor
Slidc drowcr
(for
rqck-mounted
uniil
TERMINAI.
ADAPTERS
Mqle BNC
type €onnecfor to Type C
femqle odqpter,
UG.635/U
Scope binding
poit
lo
BNC
qdqptc.
vrEwtNG
AccEssoRrES
Viewing
Hood mode
of moldcd
rubbcr
Round
lighi shield tq rcduce
glorc
ond
reflection;
does not hovc
q
molded ey.-
piece
Portoblc
Models
765-
|Vt'
17!q"
23'
rvP.
276C
128 5A
4290
Terminol Adopters
1287
Risht
ongle; UG-306A/U
UG-636/U C
mqle
io BNC
femqle
UG-1090/U
8NC to
plug
tip
{bononol
1296
orv
'|
2
I
2 2 2
7020
7030 7085
7081
7080
276C
7035
l8
lbs
9lbs
37 lbs
Ecnci
Models
766-
t3le"
eTq"
2oYe"
27 lbs 37 lbs
Rqck.Mounted Modclt
767-
19'
20"*
27 lbs
37 lbs
technicql
summqry-section
1
1285A
150/1sOA,
153/1s3A
L291
PHYS]CAI.
CHANACTERISTICS
Height
widrh
Depth
Weight Corrying
Cosc
Shipping Weight
Note:
A minimum
of 2"
clearoncc murl
be mqinlqined
tor
the rqck-mounted
model
to
qssure
odequqte
cooling,
Do
not
iubiec, ,he unit
lo lhc hot
exhouri
qir
o,
odiqcent cquipment.
r
Sehind
ponel.
With mouniing
brockeh reversed:
t 8
r/a
inches
CRI
IERMINATION
NETWORK
7062
CRT Terminotion Network Kit lo trqnt.
form rhe
H modcls to H/F models. Ihis
neh.rork i5 stqndqrd
equipment
wiih ihc
High-Frequency Moin Frome Oscillo-
scopes
(Typer
765Hlt, 765MHlf,
766t HlF, 766Hlt, 767Hlt
qnd
767 MH/?l
l -4. TECHNICAL
SUMIIIARY
(Spccificolionsl
The
electrical characteristics
of
the
Type 766 Low
Voltage,
High Voltage,
and
High-Frequency
Series
Oscilloscopes
are listed in the Performance Specifica-
tion which follows.
TERMINATING
RESISTOR
50-ohm, 5-wott,
Typc
C connector
CAATERAS
Oscillorcope-Record Cqmcrqs
with
ruit-
oblc
qccessorier
CABIE
ASSEMBI.Y
Extension
cqble
for remgic opcrotion
of
lhe
plug-in
from the oscilloscopc
OPERATIONAT
ACCESSORY
KIT
Complatc lil coniqinr:
D...rlptlon
Viewing
Hood
50.ohm
Terminqtion
Probc
l-3
Page 7
section I
-technicol
summory
Type
For lyp. 766
Low-Voltcae
Series
1765,
765M,
766,
766M, 767
& 767M1
FZ65O-O-P3l
single
beom,
electroslotic focus
qnd
deflection
cothode-roy tubc ir normolly
supplied;
5000 volts occelerqting
poteniiol
For lype755 High-Voltoge
Serie:
1765H,
765MH,
766H, 766MH,
767H & 767MHl
F7660-0-P3l
single
beom,
electro3tqtic focus ond
deflection
coihodc-rqy
tube is normolly
supplied;
13,000
volts occeleroling potentiol
Fot
lype 766 High-Frequcncy
Series
765H/t,
76sl/.Hlt,
766Hlt,
766MH/F,
767H/F,
& 767MHlFl
F767O-O-P3\
sinqle beom,
electrostotic focus
qnd
deflection
cothode-roy tube is
normolly supplied;
13,000
voli5 ocqeleroting
poteniiql
Optionol
Phosphor:
P7 phosphor
for long
persistence
low frequency
or
trqnrient
obseryqtion; Pl I
pho!phor
for
photo-
grophic
use; ond P2
phosphor
for combinotion
yi5uol
ond
photogrophic
use. All
other
phosphors
qvoiloble
on
speciol order
Aluminizolion
All tubca
qre qluminized
for moximum light
outpul
ond to
preycnl
screen
chorge distortigns
Bezel
Lighi-tight
bezel
provides
firm mount for on oscillo-
lcope
cqneaq ond
permits
reqdy interchonge of
filters
qnd
scoles
Grqlicule
Engrqved
edge-lii
groticule
hoving 6 cm by l0
cm
groduotion:
ond oppropriote
color filter over foce
of
tube.
Scole illuminotion
control vories light leycl from
zero to intensity
odequote
for
photogrophic
record-
ing.
CRT
internol
no-porollox groticule
is
optionolly
ovoiloble;
white
scole
moy be edge lit for
photo-
grophic
recording
CRT Direci lnput
l. X Axis,
l0 to
15 volts/cm
(oll
CRT seriesf
2q. Y
Axis:
5.2 to
7.2 volls/cm
(F7650"0-p-
ond
F7660-0-P-
CRT onty)
2b. Y Axis: 2t/t
to
3Yz vohsfcn
IF767O-0-P-
CRI onlyl
l-4
SPECIFICATIONS
CATHODE.RAY
TUBE DAIA
Z Axi:
(Bench
ond
Rqck-mountcd Models
onlyl
Negotivc
pulse
to
grid
of CRT blonks trqce.
25 volts
ore
required
inlo on impedoncc
of opproximqtely
I mcgohm
coupled vio
0.01
pf
cqpociio. to
dim
trqce
CRT Beqm
Controls
lNTENSlry,
FOCUS,
qnd
ASTIG
conirols
qre
pro-
vided
on the Mqin
Frome for
controlling the CRT
beqm
Beom
Brightening
A switch lqbeled
NORMAT/SINGLE
is
provided
on
lhe Type
766 High-Volloge
ond
High.Frequency
Series
chqssir. Beom
brightening
con
be
occom-
plished
by
beom
goling
(normol
operotion) or by
cqthode
gqting
{for
photogrophing
single-shot high-
5peed lronsienti)
VOTTAGE
CATIBRATOR
Amplitude
Col lV,
peqk-to-peok
3quore wove
signol
ovoiloble
ot
pin
iock
on front
ponel
o{ Moin Frome
1t2,5%
moximum,
t
I % nominoll; fqst rise
qnd
fqll
iime
permits
qdiurtment
of
qflenuolor
probe
Accurocy
Nominolly
tl./o, olwoys
within
i2.5%
Frequency
locked io
power-line
frequency. This woveform
moy
be used to
colibrote ihe time oxis wherever
the
power"line
frequency
is o controlled siqndqrd
Acces:
to Plug-lns
The
some l.volt
colibrotor woveform
is
supplied to
eoch
plug.in.
The omplifier
plug-ins
will
be
pro-
vided wiih
o suitoble
qrrqngement
for
cqlibrotion of
oll
qctive
circuitry. The
colibrotor wqyeform
will
normolly
be inseried into
the input
stoge by meons
of
the
VOITS/D|V
swirch
POWER REQUIREMENTS
line
Voltoga
From
105 io
125 volts
or from
210 io 250 voltr dt
60-cycle line
Line
Frequency
Operoiion from 48
through 1000
cycles; line voltqge
excursion is reduced
ol
exlremes of frequency
ronge
ond where power
line
disiortion
exceeds 5%
Page 8
Power
From
'150
to 230
wqtts
depending
on the
plug-in
used
DC Power Supplie:
All supplies ore electronicolly
reguloted
ENVIRONMENTAT
SPECIFICATIONS*
O/eroring
Temperqlure
Ronge
From ooC to 50oC.
All
models
incorporqle o ther-
mql cutout swilch lo
prolect
the unit
when
coolinE
is
insufficient. Adequote venliloiion ond cleoronce
qround
unil musi be
provided
in rock-mounted in3tol-
lotion to
ossure intoke oir below ihe specified
qmbieni
iempe.oture
r
Applicoble
for oll models
except militorized
or "M" Models.
Doto for
"iA"
models
is
given
elsewhere
in
thir
Specificotion.
technicol summory-section
1
Storqge
Temperoture Ronge
From
-400c
ro + 850c
Altitude Ronge
Seo level
io
15,000 feei
Humidity
Constont
operoiion at 30oC ond 80/6 relolive
humidity, Inlermittenf operotion
under oll humidity
ond lemperolure specificoiionr
lhol
prevenl
condcn-
sotion
Shoc k
l0G
shock {or durotion of
25 milliseconds
Vibrqtion
l5-minute
cycle from l0 to
33 cycles ot
0.015
inche:
double
omplilude; vibroies in
3
plones
Figvre l-6. Type
7085A Rock Slide
5e, ,o 90" with Type
767H Oscilloscope Instolled
l-5
Page 9
section I
-
technicol summory
:t
a'
Figure l-7.
Type
767H
Oscilloscope
Showing
Cleoron<e
Dimension
lor lnstollotion
ol
lype
7O85A
Rock
Slides
ond fype
7078
Kit lor
Flush
Mounting
22"
Figute
l-8.
lype
767H
Oscilloscope
ShowinE
Cleoroace Dimeasion
for
lnstollorion
ol fype
7OB5A
Rock
Slides
(standotd
lnstdlldtion)
i
-:!
H
t-6
Page 10
technicol
summory
-
section
I
I.5. TYPE 765IAH
TECHNICAT DATA
Figure I
-9. Iype
765MH
Humidi8
-
CoDstant
operation at 40'C and
95Eo relati\e
humidity.
Intermittent
operarioo utrder
all humidity
tem-
perature
specificatioos which
preveos
coodeosatioo.
Meets
MIL standard
2028 method 106A
except freeziog.
No
cotrdeqsatioo permitted
when
operathg.
Shock
-
2O
G
shock
foi duratioo
of 5 ms
15 G shock
for duration
of 1l ms
l0
C shock for
duration of 25 ms
(4
shocks
in each
plane
for a
total of 12
shocks.)
Vibration
-
ls-miDute
cycle from l0
to 3000 cycles at
0.010 ioches
double amplitude
(peak-ro-peak).
Vibrated
in 3
planes,
ls-minutes
itr each
plaoe
(2
G limir)
with a
S-minute scao
cycle, ls-miqute
cycle from
IO to 3000
cycles al
0.025 ioches
double amplitude
(peak-to-peak).
Vibrated
in 3
planes,
l5-minutes
in each
plaue
(5
c-limit)
with
a 3Gsecond
scan cycle.
Four
web guides
are
provided
tor mounting
the
fiberglas case.
Transit-
Uoit
will
meet Natiooal
Safe Transit
Specifica-
tions when
factory
packaged.
Vibration
for
ooe hour at
1.2
G 3o-inch
drops on corners.
edges aorl
flat surfaces.
Height-
widrh
-
20.9
cm
45-0 cm
58.4
cm
81,i"
t'7.%"
Depth
-
(with
cover)
23"
AAILITARIZED
PORTASCOPE@
I
Meetr ruggedized militory specificolions
I
Operqtion
from
line
power
frequencies
of 48-IOOO
cycles
I
Low
power
conrsmplion
I
Operotion
from
-30o
io
t6OoC
I
Semiconductor circuitry
I
Light weighi-
extremely
porioble
I
RFI shielding
I
Federql
Stock Number 6625-O'6-llls
I
Eqch unit is vibrotion
tesled
I
Certificqtion
of complionce
supplied with eoch
system
The 765MH is a militarized,
rugged,
portable
oscilloscope.
The
uoit is housed in a sturdy flberglas
case. A conve ent
carrying handle
permits
easy
transport through narrow
aisles,
hatchways or any confined area. A
fiberglas cover
is
provided
with facilities for
mounting accessories.
This
basic indicator
houses
the
CRT,
power
supplies,
aod
has two cayities iDto which various
X and Y
plug-ius
may
be ioserted. All electrical
specifications are ideotical
to
the 765H Series-
Heater
Strips
-
A 200-watt
thermostatically
cooEolled
staodby heater
is incorporated for
low temperature opera-
tioo.
200
watts
of additiooal standby
power
are required
below 0oC,
Weisha
-The
weight
of this uoit
iDcludiEg
plug-ios
is
less
thao 35
pouods.
Maio frame weight
is under 27
pounds.
Case aDd
covers are
constructed of rugged
6ber-
glas
material. An
RFI metallic
coatitrg
is
sprayed
ioside
the case.
Temperature
Range
(in
all
positions)
-
Storage
-40'C
to
*85"C
Operating
-30"C
to
*50"C
(without
fan)
-30"c
to
+60'c
(with
fan)
(modification
103)
Operational
Attitude
-
Operational
to 15,000 feet
Non-operating
to
5O,OOO feet
Weight
-
Net
-
27
pounds
ShippiDg
-
37
pounds
1-7
Page 11
I
2.I. INTRODUCTION
This
section of the Instruction Nlanual describes the
operadon of the Indicator Unit
with the Plug-in
modules inserted.
Operation oI the Indicator
Unit
with the
plug-in
modules inserted
is the same as that
of a conventional
oscilloscope with corresponding ver-
tical and horizontal
deflection systems. Full
operating
instructions
for each
of
the
plug-in
modules
are con-
tained in
the
manual
which accompanies it.
2.2. PREI.IMINARY
INFORiAATION
.
The Type
766HlF
Oscilloscope is a general
purpose,
wide band laboratory instrument with dc to 100 Mc capabilities.
The
dual
cavities of
the instrument
will
accept
any
of
the present Types
74-00, 76-00,
and
79-00
Series Plug.ins, thus determining the oscilloscope's
ulti-
mate performance.
The Type
766H/F
Oscilloscope
is
in
essence a Type 766H Series unit which has
been
provided
with the Type
7062
CRT Termination Net-
work
to accommodate the Type
79-024
100 NIc Dual
Trace
Ampli6er Plug-in.
For
the militarized or "M"
models,
a
200-watt
thermostatically-controlled standby
heater
is incorporated for low temperature operation.
The low-voltage power
supply
provides regulated
and
unregulated voltages
for application
throughout
the instrument.
The cathode-ray tube
circuitry pro-
vides
the necessary controls
and adjustments for
pre-
senting
a sharp display of the desired
intensity for
displaying
the signals applied to
the
deflection plates
by the plug-in modules.
The voltage calibrator yields a l-volt, peak-to-peak
Iast rise
and fall time square wave signal for use in
normalizing
the gain
of
the plug-in amplifier modules
and
for setting the
timing of
the time base plug-in
module
wherever the power-line frequency is a con-
trolled
standard.
2.3. POWER
REQUIREMENIS
The
line transformer in
this oscilloscope can be set
for
either I
l5-volt
or
230-volt
operation; a plate
on
the
rear
of the
instrument
specifies
the voltage for
which
your
instrument is set. If the instrument is
set for
115-volt
operation,
it will
operate properly at any line
voltage
between
105 and 125 volts. Il ir is
set
for
230-
\?
volt
operation,
it
will operate properly at
any line
voltage
between
210 and 250
volts.
Line voltages be"
yond
the limit specified may cause
the power
supplies
to
go
out of regulation. Powerline
voltage
excursiori
will
be more limited
over
the
permissible
power-line
frequency
range
of 48
to
1000
cycles.
Harmonic distor-
tion
should
not
exceed 5%.
If
desired,
this instrument can be
converted from
I l5-volt
operation
to
230-volt
operation,
or vice versa,
by merely
setting the
I l5Vl230V Selector
switch to the
desired voltage.
Although
primarily
designed
to
operate at a line
frequency
between
50
and
60 cycles,
this instrumenr
cau
be operated
at any line frequency
from
48 cycles
to
1000
cycles.
However,
slightly higher
line voltages
are
required
ar rhe higher frequencies.
2.4.
OPERATING INSTRUCTIONS
(Figures
2-I
qnd
2-2)
Any of the plug-in
modules may be
inserted in
either
of the cavities
in the front
of
the instrument.
The module
on
the
right,
controls
the horizontal
de-
flection
of the beam, and the module
on
the
left, con-
rols
the vertical
deflection of the beam. Thus, it is
possible
to change from a horizontal
time sweep to a
vertical time
sweep merely by changing the position
of
a time-base
module. However,
there
is
no
provision
for
coupling
an unblanking pulse
from the left-hand
module
to the cathode-ray tube,
so when a vertical
sweep is
used,
the
trace is
not blanked between
sweeps.
X-Y
operation is
obtained by using amplifier modules
in both
oscilloscope cavities. (The right.hand
cavity is
often referred
ro in rhe plug-in
manuals
as the
"X-Axis"
cavity;
the left-hand
cavity is referred to
as
the "Y-Axis"
cavity.) The procedure
for making
the
adjustment
on each plug-in
is described in its indi-
vidual
manual.
The following
illusrrations
are designdd
to aid the
operator
in
becoming familiar
with
the oscilloscope.
Figure
2-1.
Type
766H
Solid State
Oscilloscope,
Front-Panel
Facilities
Figure
2-2.
Type
766H
Calibrator
Display
We
know
that you are anxious
to get acquainted
with
your new instrunent.
To aid you in this
en-
deavor,
you may
set up
the
instrument
using
the
built-in
calibrator
signal
to demonstrate the
efiects of
the
various controls
on the display.
Intensity
modulation
of the CRT beam
is possible
through
the Z INPUT
connector at the
rear of the
oscilloscope.
sEciloN
2
OPERATING
INSTRUCTIONS
2-l
Page 12
action
2
-
operoting
instructions
INTENSITY
Co.nol:
vo.ier
no..
SCALE
II.LUM
Control
with
il.h: dimBer
.onkol
voaca icole
illu inq'
tion; tttoch€d
sit.h tuh3
PAITERN ?OSITIONING
.Joyslick <onkol:
permitt
po-
sirioning the dirploy
in both
the
horizonlol o.d vorti.ol
directionr
for r.gLhotion
of
the
potte.n
wiih
tie
grcli.ul.
a
*
a#
rocus
Co.tol.
provid6' o. odilst-
dble voltog.
for .othod.ioy
tub. fo.ui
srid
t6 oPlinit.
ASTIG
Cont.ol:
provide5
on odiurt-
obl. voltos€
Ior cothod.-roy
tub. to optifrit.
tPol rhoPa
OIL,4YIIII
SMEP
r
-a
.t:t. a- / a'
Ita
BEA/I{ ROTATE
Con(.&ic a<r€wddvlr.d'
hol,
vori6 th. field rtrength
whi.h rhe CRT b6om i.ter
.
thur .oFp..totios
for
lha
corlh'3
mqgnelic
off..t or
cepl! cou3ing
it ,o rotot.,
-
-
"2
Figvte 2-1. fype 766H
Solid Stote Oscilloscope,
Front Ponel
Fociliries
Page 13
operoting instructions
-
section
2
T6
obtoin lh. colibror,or
disploy, ,er the
conhots
erodty o! .hown
ond
p€rlorn
ihe numbered
rrcpr i, 3.q!.n<c.
Use
the
ron.
Fro<.dur.
wh.n
diffi<ulty i5
.rp.ri.nced wh.n
obroinins
o di!.
pldy.
Thi. willeliml.ot
'cockpir"
troobl*
due ro ni3otignoenr
of controtr.
Set
ASIIG,
FOCUS,
& lN.
TENSITY
(onrroh
ro
ce.-
5 mSEC
Sei ,wnch6 ,o:
+. AC,
A
TINE
fleodiGt INTENSITY,
TOCUS ond
ASTIG
.onirols for d
shqrp
por.
|eh,
Reqdiu,, 6 ,o
cenrer
th.
Set POSITION
conhol. ro
, EEry 765H
e
*
e
o{t-lYlc
s[EP
-
-. ,tr
.-/
,
A\.
:,ifi[
Rotore inn€l l.ob
tvARt
ABIE)
fllly
clockeke
-
Set
inner
tnob
(TRIGGERI
t6
NORM
S.t to aUTO
Set olter knob
t/vtODEl
ro
CH 1
Figure 2-2.
lype 766H
Colibrotot Disploy
2-3
Page 14
section 2
-
operoting instructions
.-
To
remove a plug-in from
the Main Frame,
siurply
unscrew
the knurled
thumbscrew
at center bottom of
unit
and pull it free
of
the
Main Frame. The
plug-in
unit
is provided
with a power-line interlock
jumper
on
its
cernector, hence
all
power is automatically discon-
nected
whenever
a plug-in is removed.
When you change
a
module
from one cavity
of
the
Indicator
Unit to the
other,
you trust
adjust the gain
oI
the plug-in
unit to allow for the difierence in
ver-
tical
and
horizontal sensitivity of rhe cathode-ray tube.
This is
accomplished by means
of the GAIN ADJ or
SWP
CAL
front-panel
screwdriver controls
on the
plug-in modules
and permits normalization of the
plug-ins
to any NIain
Frame.
The Type
76'00
Series plug-ins have
a GAIN CAL
range
in the order of 3 to I so that in general they
can
be
calibrated
to the scale
urarkings
in either the Y
or
X
cavity.
All
Type
74-00 Series Amplifier plug-ins can be cali-
brated
to
the scale
markings
in
either the Y or X
cavity.
The Type
74-00
Series
Sweep plug,ins have
a cali-
bration
range of approximately
L25%
to adjr.rst for
variations
in X sensitivity
of
individual Main
Frames.
When
inserted
in the Y cavity,
these
plug-ins can
only
be calibrated
to twice their nonnal
sweep rate.
2-5. BEAM BRIGHTENING FACILITY
(Figure
2-3)
A
back-of-panel
slide switch
labeled BEANI
BRIGHTENING
is provided
on all
oI the high-
voltage
and
the
high-frequency
Nlain
Frame models
so that both
NORIVIAL
(beam gate blanking)
and
FAST
SINGLE
SWEEP
ONLY (grid-cathode
blank-
ing)
are
available. See Figure
5-6 for location
of
switch.
Beam
brightening
is normally
accomplished
by ap-
plying
the
unblanking pulse
to the
CRT beam gating
Figwe
2-3. Single
Sweep Unblonking
vs
Sweep Speed
2-4
plares.
To rerord
high-speed
rransienm,
it is
necessary
to unblank
or brighten
the CRT beam
with an AC
coupled
negative
gate applied to
the cathode
of the
CRT.
Cathode
drive
lor beam brightening
is desirable
when
high
writing
rates
are required to
assure
maxi-
trurn
beam current
with
minimum spot
size.
Basically,
the beam brightening
feature
should not
be
used
except on fast
sweeps, because
in the single
shot
rnode,
the brightening
gate is ac coupled
to the
cathode
of the CRT. This means
that if
slow sweep
speeds
are used,
full scan unblanking
may not be
available
since the brightening
gate will
be differen-
tiated
by
the capacitive-resistive coupling
network,
Figure
?-3
shows the efiect
of the AC
coupled beam
brightening
pulse. The
Time Base
unit was
set up for
single
sweep
and for
sweep rates
of 50
,g,sec,
Z0
4,sec,
l0
g.sec, and 5
4,sec
respectively.
Judging
from Figure
2-3,
it
may
be
seen that the beam
brightening
is only
eflective
at very
fast sweep speeds.
This
effect oflers
no
real disadvantage
since the purpose
of the Single
Shot
mode is to
photograph fasr
transients. By
setting
the
BEAM
BRIGHTENING
switch to
NORMAL,
the r.rnit may be
operated
as a standard
oscilloscope.
2.6.
OPERATOR'5 MAINTENANCE INFORMATION
Frequently,
many
oscilloscope ailments may be dis-
covered
through an erroneous display
on the screen or
by the
conspicuous
absence of a display. The
informa-
tion
in
the paragraphs to follow will
pin-point this
information
according
to the syluptoms presented
to
the operator.
o.
A Nqked Screen
If the
operator is not able
to obtain a trace
or spot
on the
screen lor
either beat-n after substituting
other
plug-ins
known to be
operating properly,
the trouble
is
confined to
the Indicator
or
N,lain
Frame Unit.
Refer
to Section
5 of this rnanual for diagnostic
and
remedial
proceclures.
b. lnsufficient Deflection
II the
horizontal
or vertical deflection
signal cannot
be
set
to the proper value
with the front-panel
screw-
driver
controls
GAIN ADJ
or SWP CAL
on
rhe plug.
ins, then
check
the output
of
the
low-voltagrc
regulated
supplies
at Test Points
TPl00l,
TPtl0l, TPt20l,
and
TPl301
located
on
the
N'Iain
Frame.
The high-voltage
Test Point
is
TP200l also
located
on the
Nlain
Franre
chassis.
If these voltages
check
out alright, the
trouble
tnay
reside in
one
oI
the
plug-ins. If there
is insuffi-
cient
vertical
deflection,
it is in
rhe left-hand module;
if there
is insuficient
horizontal
deflection,
it is in rhe
right-haucl
rnodule.
Reler
to the appropriare
plug-in
trtotlule
Instmction
Nlanual
lbr
ftrrther
infonuatio[.
Page 15
c. lmproper
Sw..p Timing
A front.panel
screwdriver control, SWP
CAL,
is pro-
vided
on the Time Base Plug-in
to
permit
normaliza-
tion
of this module
to any main
frame. If this control
does
not have
sufficient
range, then check the output
of the regulated
supplies at the Test Points previously
mentioned.
II these
voltages are normal, then
check
out the
Time Base Plug-in.
d,
lmpropar
friggcring
If
external
and line triggering modes are satisfac.
tory,
but
the intemal triggering mode is not,
then the
trouble may
reside in the trigger
take-off circuit of the
opersting
instructions-section
2
Y Plug-in
amplifrer
that
the
operator
is using. How-
ever,
if improper
tiggering cannot
be obtainid
from
any
of the triggering
sources,
the trouble probably
resides in
the Time Base
Plug-in itself.
Refer
to the
Time Base
Plugin
Instruction Manual for
more
in-
format ion-
e.
Woveform
Distortion
If the display under
observation is distorted,
but
there is
no other manifestation
of
rouble such
as
insufficient
deflection, improper
sweep rate
etc., then
the problem
is confined
to the
plug-in
which is ampli
fying
the distorted
signal. Check
that the PATTERN
POSITIONING
conrol is properly
adjusted.
2-5
Page 16
sEcTloN
3
CIRCUIT
DESCRIPTION
3.I. INTRODUCTION
This section
of
the Instruction
Manual contains the
circuit
description of the
Main Frame or Indicator
Unit
alone. The circuit description will
be keyed to
the Functional Block Diagrams,
Figures 3-l and 3-2.
Emphasis
is placed on the interrelation of circuits
rather
than on detail o{
operation.
It
is also recom-
mended
that the schematics at the rear of
this manual
be
referred to in following
the circuit description.
3-2, CIRCUII
DESCRIPIION FOR
tOW
VOTTAGE
REGUTAIED
SUPPIIES
(Figures
3-l
qnd
3-2)
q.
Power
Trqnsformer
Low voltage and
heater
power
for
this
instrument is
provided by power translormer Tl00l. The
primary is
wound with
two equal ll5-volt
windings that can be
switched
either
in parallel for I l5-volt operation, or
in
series for
230-volt
operation
vii
the
I l5V/230V Se-
lector
switch
S100. The
secondaries
contain four sepa-
rate
windings which provide power to the regulated
supplies
and two separate heater windings.
b, Regulored Supplies
Four
regulated and two
unregulated
supplies are
provided
with
output as shown in Figures
3-l
and
3-2,
Functional
Block Diagrams
of the Power Supply. All
of the regulated supplies
are of
the constant-output
voltage series-passing
type.
The basic
reference for
all of the
regulated
supplies
is
established by
the frxed drop across zener diode
CRl304.
This constant drop
or
relerence voltage is
applied
to the base
of
Q1302
which
is
one o{ the
in-
puts
to difierential amplifier
Ql30l
and
Q1302.
The
other input
to the amplifier is connected across a
divider consisting
of
R1302 through
R1305
which
samples
a portion
of the
-50V
regulated output.
A
portion
of this sample voltage
is tapped by the
-50V
AD.l potentiometer
R1303, and is applied
to the
base
of
Ql30l.
Potentibmeter R 1303
is adjusted so that
the
output is precisely
-50
volts.
The minus
50-volt
output is
also the
voltage
relerence
source for the other
low-voltage regulated
supplies. Thus, voltage
adjust-
nlents
are always
made in the sequence
starting
with
the
-50-volt
supply and
ending with the
+200-volt
supply.
Since the
operadon of the low-voltage
regulated
sup-
plies
is
similar, only the
*50-volt supply
is
described.
CRl201
and CRl202 are
connected in
a conventional
full-wave
rectifrer
circuit. The
rectifted output
is ca-
pacitively
filtered
by
Cl20l shunted by resistor
RI202
and
applied
to the voltage
regulator.
Operation
of the regulator is
as follows: assume
the
output
voltage
tends to decrease.
This will lower
the
base
voltage
of the
error
detector
dc amplifier
Ql20l,
and
raise
the base voltage of emitter follower driver
Q1202.
The increase
in voltage at the
emitter of
Q1202
is
applied
to the base
of the series-passing
transistor
Q1203.
The
resultant increase in voltage
at the
emitter
of
the
pass
transistor is
such as to
return the output
voltage
to its proper
value.
c.
Voltoge
Colibrqtor
The
power-line
lrequency
voltage
from Tt00l is
applied to
the base
o{ rhe
voltage
calibrator
Ql05l
through
limiting
resisror R1051. Negative
and positive
voltage
excursions
will drive
the fansistor into
and
out
oI conduction
at the line-frequency
rate.
The re-
sulting
square wave is applied
to
a voltage divider
consisting
of
R1053 and R1054.
The attenuated
cali-
brator
output
of one volt peak.to-peak
is coupled to
the
amplifier plug.in
when the
VOLTS/DIV
switch is
set
to
CAL.
The
plus
100-volt
supply and the satura-
tion voltage
of
the
transistor
will determine
rhe peak-
to-peak
voltage
excursion
of the calibrator
waveform.
3-3. CRT CtRCUrr
q.
CRT Beqm Control Circuils
The INTENSITY
conrol R2016, part of the nega-
tive high-voltage
divider is
used to
vary
the cathode-
ray
tube grid
voltage to adjust the beam current.
The
FOCUS
control R2014
is
provided
to
vary
the voltage
at the focusing
anode to set the
second
cross-over point
right at the
screen
of
the cathode-ray
tube. The
ASTIGmatism
control R2022F is provided
to
vary
the
voltage at the
asti$matism anodes to focus
the spot
in
both
axes
simultaneously. The PATTERN CORRec-
tion
service adjustment
is set to vary the field the
cathode-ray beam
encounters as it
emerges from the
deflection
system to control the linearity
at the ex-
tremes of deflection.
The BEAM
ROTATE
front-panel screwdriver con-
trol R2022 is provided
to
vary
the
current
through coil
L2001
around
the neck
of the CRT. The current
varies
the field
strength which the
CRT
beam
inter,
cepts
causing it to
rotate. This lunction
is used to
compensate
for the
earth's
magnetic
effect
on
trace
alignment.
b. High Vohoge Power
Supply
Accelerating
voltages
lor the cathode-ray
tube are
obtained
by
rectifying a
30-Kc
high
voltage produced
3-l
Page 17
section
3
-
circuit description
Froov
i€ouiii;dl
rlrJrrr-;sr- l
I
uprraer I
Figurc 3-1. lype 766H
j200Y
and
+100y
Regulororu, Functionol
Block
Diogrcm
I;sovEG,Jrrrdl
fstrr.Ei]l!-Eiliid
I
A{PLIFIEi
I
Figwe 3-2. lype 766H
!50V
ond
-50V
Regulolors, Functionol
Elock
Diogrom
3-2
Page 18
by
ransistor
oscillator
Q2002.
This tmnsisfor is
con-
nected
as a
Class C oscillator
with the primary of
ffansformer
T2001 tuned by the strayed capacitance
and
the reflected secondary
impedance.
The
output of the oscillator is stepped up
by T2001
and applied via
a conventional solid state tripler
net.
work consisting
of CR2050 through CR2052
to the
post-deflection accelerator
of the cathode-ray
tube.
The negative
high-voltage
supply
is derived from
a
tap
on
the secondary winding ol transformer T2001
which
is connected to a
half-wave
rectifler CR200l.
The
rectiEed output of
-1440
volts is capacitively
filtered by
C2008, C2009, and C20l t and
provides
the
n€cessary operating potentials fbr the proper intensity
and focusing of the cathode-ray tube.
Regulation
of the
high
voltage
negative
supply
is
accourplished
by
sampling a
porrion
of
the
rectified
output
and
applying
a correction signal back through
the HV regulator
Q2000
to
Q2002
to the base of the
HV
oscillator
Q2003.
This
action changes the ampli-
tude
of oscillation of
Q2003
and T2001
in
such a
manner
as to restore the high voltage output to its
preset
level. Potentiometer R2009R, HV ADJ, is pro-
vided to preset
the output of the
high'voltage
supply
to
its proper level.
3.4. NORMAI. SWEEP UNBTANKING
The cathode-ray
tube used in this
oscilloscope
has
two
additional
beam deflection plates
which cut ofi the
electron beam independently
of the control grid. In
beam gate
blanking, the
electron
beam is
always
turned
on and
passes
through an aperture in the
circuit
description
-
section
3
center
of a blanking
shield. Behind
this
shield is a set
of deflection plates,
one of which is connected
to
a
nxed
+50
volt
source, while the
second deflection
plate
is
connected
to
the
unblanking
gate from
the
X Plug-in.
When the
time
base
is sweeping,
both beam
gate
deflection plates
are
at the
same potential
and the
electron beam
passes
through the aperture in
the
blanking
shield. When the sweep
ends and
the un-
blanking
gate voltage
increases,
the beam is deflected
behind
the blanking
plate and the
screen is dark.
Beam control pulses
(trace brightening
and retrace
blanking pulses)
can easily be
dc coupled since
these
beam
deflection plates are electrically
close to ground.
Hence,
the display is visible
only during
the
forward
sweep
interval
and is
blanked
during
the retrace and
lockout interval.
3.5. FASI SINGLE
SWEEP UNBTANKINS
A back-of-panel
slide
switch is provided
on
the high-
voltage
and high-frequency
Main
Frame
models
so
that both
NORMAL
(beam gate
blanking) and
SINGLE SHOT (grid-cathode blanking) are avail-
able.
Cathode drive for beam brightening is desirable
when high writing
rates are required to assure
maxi-
mum
beam current with minimum
spot size.
When
it is desired to record high"speed,
single-shot
uansients,
the back-of-panel Beam Brightening switch
is
set
to FAST SINGLE SWEEP
ONLY, This tech-
nique
completely turns ofi the electron beam eliminat-
ing the possibility
of
film fogging and loss
of
infor-
mation
when the lens is open for an extended
period.
3-3
Page 19
SECTION
4
PERFORffTANCE ASSURANCE
TEST
4.I.
'I/IAINTENANCE
CHECK
TO ASSURE
PERFORIYIANCE
The tests described
in the paragraphs to
follow
should be
performed by Instrument Test
Departments
and Ma.intenance
Laboratories to certify proper
per-
formance of this insrument. These tests
are divided
into
sections for simplification
and to assist those
test
groups
where
complete checking is not mandatory, or
where all test equipment is not available.
Refer to
Secdon
5,
paragraph 5-7, lor list of test equipment
required.
NOTE
If this oscilloscope
is checked by a
Receiving
Inspectiou
laboratory, the tests outlined
below
are recommended
to certify
performance. This
instrument
has been thoroughly tested
and aged
at the
factory. Nevertheless,
rough shipment,
extreme
environments, or long
idle
periods may
necessitate mi[or adjustments of
the
controls.
Hence, it is suggested that the
certilying engineer
ffy the recommended
adjustments not only
lor
recentering
the controls, but also
to ascertain
their
range and to familiarize
himself with this
precision insftument. If, after
performing all the
tests outlined
in the
paragraphs
to
follow, the
inshument will not
perform
to specification,
the
assistance
of the local Fairchild Field
Engineering
representative should be requested,
4.2. CHECKING
IHE POWER SUPPLY
l. Check the line fuse (s)
Fl0l for
proper value:
3 amperes; an additional
line fuse is
provided in the
"M" models: F150,
2
amperes.
2.
Check
Iuses
of the regulated supplies
for
proper
yalue:
Reguloted
Fuse
Supply Symbol
Roting
3. Examine the
instrument
for charred or mechani-
cally damaged components. Correct all
defects.
4. Apply power to tJre instrument through a variable
\.-, voltage
source (Variag or an equivalent).
Set the line
- voltage
to
ll5 volts. (Double this value for
230-volt
operation.)
5. Set up the
oscilloscope to obtain
six cycles
of the
calibrator
signal.
6. Allow
20
minutes Ior
warmup before making
any
adjustments.
7.
Lower the line
voltage to I05 volts (210 volts for
230-volt operation)
. The
disptay
should
remain stable
and must not
be
erratic.
If instabitity is noted before
the lower limit o{
the line
voltage
is reached, check
operation
of the low-voltage
regulated
power supplies
as
outlined
in
Section 5
of this lnstruction Manual.
Nor€.
Always
check the regulated
voltages
starting
with the
-50-volt
supply and
ending with the
+200-
volt
supply,
8.
Raise the line voltage
to 125 volts (250 volts for
230-volt
operation)
. The display should remain
stable
and must not
be erratic. Il instability is noted
before
this upper
limit of line voltage is reached,
check opera-
tion
of the low.voltage power
supplies.
9. Reset the
line
voltage
to 115 volts (230 volts for
230-volt operation).
4.3. CHECK RIPPTE OF
IOW-VOIIAGE
SUPPTIEs
l. Use
a Type
704
Test Oscilloscope with a Type
4290 Probe.
2.
Ground all chassis to
power-line
ground.
3.
Set
the oscilloscope for ac coupled
input
and set
Y
sensitivity to 5
mv/cm.
4. Use AUTO triggering with line sync and set
SWEEP
RATE switch to 5
mS/CM.
5. Measure the amount of
120-cycle
ripple at
the
output of each power supply as listed below. (For line
frequencies
other thau 60
cycles, the
ripple will
be
twice the line frequency.)
Reguloted
Sspply Ripple Voltqge Test Point
-50
volts
l0 millivolis
p-p
mox TPl3ol
*50 volts
20 millivolts
p-p
mox TPI2oI
+ 100 volrs
30
millivolts
p-p
mox TPI l0l
+
200
volt5 65 millivolts
p-p
mqx TPI 001
4.4.
CATIBRATOR
CHECK
o.
Woveshope
Check
l. Adjust
the Type
704 Oscilloscope for
a sensitivity
of
20
mv/cm
and connect
the Y INPUT
to rhe CAL
pin
jack
on
the front
panel
of
the
Main Frame via the
Type 4290
Attenuator
Probe.
2. Observe a I volt
(5
cm) peak-to-peak,
60-cycle
square wave; rise
time to be
less
than
20 g,sec.
Tilt
and
ringing
should be
less than
5/o (50
mv
or
2.5
mm) .
-50
volts
*50 volts
+
100
Yolts
*200 volts
I ompere
1.5 omperes
I ompere
0.5 ompere
Fl30
tt 20 Flr0
tl02
4-l
Page 20
section 4
-
performonce
ossuronce
test
\--, b. Amplirudc Accurocy
(Optionol
Tcstl
Nole:
This
check is not required on every oscillo
scope.
l. Precisely
calibrate the Type
704
Oscilloscope
with
the Ballantine Model 420 Calibrator. The oscilloscope
is
set
up
with the Type
4290 Probe
at a sensitivity
of
20
mvlcm.
2. Set the
Ballantine
Calibrator
lor a frequency
of
I Kc at
an output of I volt
peak.
3.
Adjust oscilloscope
for
5-centimeter
vertical bar.
4. Transfer
the Probe
from the Ballantine Calibra-
tor to the
I volt
pin
jack.
Note Calibrator
amplitude
to
be 4.9 to
5.1 cm (l volt
-+2%).
Avoid errors by
using
the anti-parallax
scale,
4.5.
€HECXING CRT GEOIAETRY AOJUSTIIAENT
Set Y VOLTS/DIV
switches
to
CAL and SWEEP
RATE
switches to
5
mS/DIV.
Note the steady square
wave patterns
on the screen for
each beam. The dis-
play
should fall within a 6 cm x l0 cm
and a 5.75 cm x
9.75
cm frame.
Refer to the
paragraph
entitled "CRT
Adjustmenb,"
in Section
5 of
this Insruction
Manual
for
further details.
4-2
Page 21
SECTION
5
5-t.
INTRODUCTION
(Figure
5-l)
This section
of the Instruction
Manual contains
service information and
procedures for internal adjust-
ments. Refer to Figure
5-l
for an over-all functional
block diagram of the Type
766H
system.
WARNING
WHEN THE COVERS
ARE REMOVED FROM
THE INSTRUMENT
TOR
SERVICINC, EX.
ERCISE CAUTION WHILE THE POWER
IS ON.
fiTAINTENANCE
AND
RECATIBRATION
To
gain
access to
the
chassis for
service,
remove
the
side
and
rear covers.
This
will expose all of the transis-
tors
and service adjustments for normal mainrcnance.
5-2. REiIOVAI AND TEPI.ACEIIENT Of PARTS
lf it is necessary
to order a
replacement
component
from
the Iactory, always give the
Type
Number
and
Serial Number
of the
instrument.
Before ordering
parts
tbr in-warranty replacement
or
purchasing
them
lbr
out-of-warranty replacement, be sure to consult
the
Parts
List in this manual. The Parts List gives the
values,
tolerances,
ratings, and
the factory part
number
lor
all electical components used in
the
instrument.
This
will
help
to exlxdite service.
X OEFL
I
oJ Fasr
str cLEl
lswEEP
oNLY
I
UNALANXITIG GATE
FROM
X PLUG.IN
FEAM
RorAr"l
Fsrn'l
Fdcl
|.iITENffiN
tzllrPuil
Figure 5-l ,
lype 766H
Over-ol,
Sysrent Fuactionol
Elock Diogrom
5-I
Page 22
section 5 - mointenonce
qnd
recolibrotion
.
Since
your
instrument
left the factory, some of
the
-
p".t,
ma'y have been
superseded by improved compo-
nents.
In such cases,
the
part
numbers
of these new
components
will not
be listed in your
Parts List. How-
ever, if you
order a part from the factory and it
has
been
superseded
by an
improved
component,
the new
part
will be shipped in place of the part ordered.
It is the aim
of
the Fairchild
organization
to
make
available
the
most reliable commercial oscilloscopes
within
the
state
of the art and to
provide services
which
will help the
user
to rapidly
restore any of our
equipment
to
its
specified
performance. Your
local
Field
representative maintains a limited
number of
spare par$.
AIso, the factory
may be asked to airship
replacement parts on a rush basis.
The procedure for replacing most parts in this
in-
strument
is
obvious,
therefore specific
instructions for
their
removal are not required.
Nord.' Be
sure and
replace the beryllium oxide
insu-
lating
washers
(they
serve as heat sinks) on
the tran-
sistors that require them. Always
grease these heat
sinks with Dow Corning silicone grease for optimum
heat
ransfer.
5.3. CATHODE.RAY TUBE
REPTACE'{ENT
CAUTION
THE CATHODE-RAY TUBE SHOULD BE
HANDLED WITH GREAT CARE TO
PRE.
VENT BREAKAGE AND/OR SERIOUS
PER.
soNAL
TNJURY
FROM
TLYTNG
GLASS.
To remove the cathode-ray
tube,
first
remove
the
covers,
disconnect the tube
socket,
HV anode cap, and
the
4 leads connected at
the
neck
of
the tube. Remove
the
bezel and loosen the tube clamp at the
base
of
the
CRT. Pull
the
cathode-ray
tube straight out
through
the front panel.
Be careful not
to
break the neck
pins
on the CRT
as the tube is removed. Install
the new
cathode-ray
tube by
the reverse of
the foregoing
prG
cedure.
Be sure to align the scale to the CRT trace
and scan
aperture.
After
the cathode-ray tube
has been replaced, it may
be necessary to recalibrate. Special attention should
be
given
to recalibration
of the time
base
sweep
rates and
to
the amplifier sensitivities.
5-4. SERV|C|NG
HTNTS
Although this is
a complex electronic instrument,
trouble
rnay be localized
to the follo$'ing basic cir-
cuits:
l. Low-voltage Power Supply
2.
High-voltage Power Supply
_
3. Cathode-ray Tube Circuit
4. X Plug-in
5. Y Plug-in
5-2
Whenever trouble
occurs
in this insrument,
6rst
ry
to
localize it to
one
of these
basic circuits,
There
is
no
simple way of
locating
troubles. An
understanding
of the lunctions
of the
circuits
is
the
best
help. With an understanding of the circuit opera-
tion,
it will be
possible
to make
a good guess at the
general
source of
troubles
Irom
the
symptoms.
As an
aid in
trouble
shooting
this
unit, refer to the
system
block
diagram
in
this
Section and also
to the sche-
matics.
To
keep electronic
units operating
at top
perform-
ance, it
is desirable to check the equipment
at
regular
intervals. The
period between
checks will depend
on
the
installation
and the conditions
of operation.
For
these regular
checks, clean all
dust and dirt
from the
unit using a light
air blast or
soft
brush. However,
to
insure
the
reliabitity of
measurements,
we suggest that
you
recalibrate
this
instrument after
each
500
hours of
operation or every six
months
if used intermittently.
Also, the calibration of
a unit should
atways
be
fully
checked and
adjusted after
the rePair or
replacement
of any
component in the
unit.
The complete
adjust-
-ent
procedure
for this unit
is given
in this
Section
of
the Manual.
In the event of
improper equipment
perlormance,
the following suggestions
are
recommended:
l. Remove the
side and
rear
covers and
inspect
for
broken wires and
faulty comPonents,
Check
the
fuses
in each
power
supply
buss.
Measure the
voltages
at the
test points in the
Main Frame.
If all
the above
are
within specifications,
the
problem
will
most likely
.be
in
the
plug-ins. It
is suggested
that
other
Plug'ins
known to bi operating
properly
be inserted on
a sub-
stitution basis.
2.
Whenever
an aPParent
trouble
is pin-pointed,
make sure that
it is not
caused
by
improper setting
of
the
panel conrols.
For instance,
iI the TRIGGER
COUPLING,
SLOPE,
or
SOURCE
controls
are
im'
properly
set on the
Time
Base
Plug-in,
then aPParent
triggering problems
are
manifested.
3. When
using accessory
probes or adapters,
be sure
the
trouble
is zol originating
in the
accessory
before
suspecting
the oscilloscope
itself.
4.
When
it has been
determined
that a
speciftc
trouble
exists
and has
been localized
to a given
circuit
within
a
given
unit, then
make a visual inspection
of
that
circuit.
Many
troubles,
such as loose
wires,
scorched parts, may be
exposed
by this method. Obvi-
ously you should find and eliminate
the cause of
charred
resistors or
over-stressed capacitors
before re-
placing damaged component.
5. Localizing the trouble
is made easier by use of an
oscilloscope
to check waveforms. Use
a high-impedance
probe
while rouble shooting.
6, Sometimes it may be necessary to
move
the
plug-in
unit
from one cavity to the
other
in order to gain
access
to that particular part
of the
circuit that re-
quires
checking. A Type 4294
Extension Cable Acces-
Page 23
2. A thermal cutout
switch is incorporated in
this
unit. If the
instrument has been
working but has
just
stopped, it may
have overheated and
tripped the ther-
mal
cutout switch.
The thermal
cutout
switch will
reset
itself when the interior temperature
of the instru-
ment
drops
to a safe value. Possible causes
of over-
heating
are: resffiction
oI
air circulation and
high
ambient
temperature.
3. If the
line voltage is within specifred limits, and
one
of the regulated power
supply output
voltages
is
not
correct, check that particular regulator circuit.
Each
of the regulated supplies is fused separately.
These
fuses should be checked and replaced if neces-
sary with
a
new
fuse of the
proper
value.
Note.'
Always
check the regulated voltages starting
with
the
-50-volt
supply and ending
with the
+200-
volt supply.
When
the circuit
ailment has been confined to a
Particular
regulator, then one may
kouble.shoot
within this circuit
to locate the
defective
compo-
nent
(s). The description
of the circuit involved
may
prove
useful when diagnosing circuit ailments.
4, If none
of
the regulated voltages
are
correct, then
the
trouble probably resides in the
-5O-volt
regulated
supply
since this
voltage
serves as a reference level for
the
other
three
regulated circuits.
One cause
of insufficient output
voltage is low un-
regulated dc voltage
which
might be caused by an
open
or shorted rectifier
diode.
5. If there is excessive ripple on any of the
unregu-
lated supplies,
replace the
frlter capacitor (s).
5.5. TROUBTE SHOOTING
THE CRT CIRCUIT
The
intensity, focus, geometry, and calibration o[
the cathode-ray
tube
display depend
on
proper opera-
tion
of the
high-vottage supply. To isolate
this
trouble,
remove
the rear cover from the
Main Frame. Measure
the voltage
at Test Point TPZDOI
using caution. This
voltage reading should be between
-1350
volts and
-
1440 volts with
respect
to
ground.
If
necessary, ad-
just
the HV ADJ potentiometer
R2009R for proper
voltage.
Remove power and
measur€ the resistance of
the primary
and secondary
windings
of
high-voltage
transformer T2001. The resistance across
the primary
winding
should measure around 5 ohms.
Nleasure the
resistance
of the secondary winding
from the anode of
CR2052 to ground; it should measure
around 175
ohms.
Also, measure the voltages at other
points in the
circuit
for
which
typical values are
given on the high-
voltage
power supply schematic.
If all
of
these voltages
check
out correctly, then the
trouble may reside with
the cathode-ray tube itself which should be checked.
If the low-voltage power supply
is
operating
nor-
mally, but no spot
or
trace is visible on
the
screen,
then
the trouble
might be
a
defective cathode-ray tube,
a
defect in the CRT circuitry including the high-
mointenonce
qnd
recolibrotion-section
5
sory
is available
and
permits
the
plug-in unit to
be
operated
while
extended through
the front of
the
oscil
loscope.
7.
If
rouble is isolated
to one of
the plug-in
units,
refer
to the appropriate module manuals for
further
information. If
the trouble has been definitely
isolated
to the Main Frame
or
Indicator, then
proceed as
follows:
The first
step in rouble shooting the
Indicator Unit
is to measure
the
power supply voltages at
Test
Points TPl50l, TPl2Ol, TPll0l and TPlOOl
lo-
cated
on
the
Main Frame, If all of
the voltages are
not
as i4dicated, the rouble
is
in
the low-voltage
power
supply or the power source. To
check
these,
refer
to the subsequent
paragraph entitled "Trouble
Shooting
the
Power Supply." If all thqse
voltages are
proper,
the trouble resides in the
cathode-ray tube
circuit. In this instance,
refer to
the
paragraph
en-
titled "Trouble
Shooting
the Cathode-Ray
Tube
Circuit" in this Section of the manual,
5.5. TROUBTE SHOOTING
THE POWEN
SUPPIY
.
WARNING
WHEN THE COVERS ARE REMOVED
FROM
THE INSTRUMENT
FOR SERVICING, EX-
ERCISE
CAUTION WHILE
THE POWER IS
ON.
The lower-voltage busses are
potentially
more
dangerous than the cathode-ray
tube poten-
tial
because o[ the high-current capabilities
and
large filter
capacitors employed
in
these supplies.
When you
reach
into
the
instrirment with one
hand
while
it is
turned on,
do not grasp the
metal frame
with
the
other
hand. If
possible,
stand
on
an insulated floor and
use insulated
tools. It is advisable to ground the
third lead
in
rhe
power cord whenever the instrument
is
in use.
As an aid in uouble shooting
the
power supply,
refer
to the
{unctional block diagrams
Figures 3-l and
3-2, and to the
low-voltage power supply schematic.
L If
the
insrument fails to operate,
includinB the
pilot
light,
checl
the source of
power and
determine
that the power cord is firmly in place. Then
check
fuses located
at the
rear
of
the instrument.
(See
Figure
5-2.)
Nor€.'
Disconnect the power cord when working
on
the
uanslormer Tl00l and associated
circuits.
If the fuse is blown, replace it with one ol
the
proper
value
and
reconnect the line cord. If the new
fuse
blows,
immediately
check
the power transformer
for
shorted primary
or
secondary
windings. Shorted
rectifiers
i! the secondary
circuit will also blow the
line
fuse Fl0l. Check for an operr
primary winding
of Tl00l if the line-fuse
is good.
5-3
Page 24
section 5 - mointenonce ond
recqlibrotion
\---rr'oltage
supply, an unbalanced
condition
in
either of
the
plug-in
modules, or a defective
unblanking
circuit.
Note:
To obtain
a spot or trace on the
screen, the
cathode-ray
tube must be unblanked.
Refer to the appropriate
plug-in
module
Instruction
Manual
for further
information.
5.7.
IEST EOUIPMENI REQUIRED
FOR SERVICE
ADJUSIIAENT5
o.
lntrodu.iion
The adjustmen6 outlined
in the following para-
graphs
are based on the test procedure
followed at the
factory. All
adjustments
should be made at mid-line
voltage,
I l5Vl230V,
-+2%.
To set up
the
Indicator
Unit
for
calibration, insert an amplifier
plug-in and a
time base plug-in
into the
Main Frame. These plugin
modules
are signal sources
for
the
Main
Frame
and
must be
fully tested
and certified units. No testing
will
be performed
on
the
plug-ins tbr calibration of the
Indicator.
b.
Test Equipm.nt
Required
(Equiyolent
msy be
substitutedl
Equipment
Volt-ohmmeter
Der(ription
-
Simpson Modcl 260 or
Trip-
plet
Model 630
20,000 ohms/volt
sen3itiYiiy
Squore Wove Generolor
-
Foirchild Type
791
High-Yoltoge Meler
-
Sensitive
Reseorch Model
DCH-I
-
Foirchild Type
7O4
with
qnii-
porollox
scole
(scole
#4501
200r
I
-
l0:l Porrive Aitenuqlor
Probe
-
Powerstot, Vorioc;
copoble
of vorying
line
voltoge of
ihe
inslrument
bcing colibroted
-
.lohn Fluke Model 8018;
-
Tektronix Type
130
-
Hewlett-Pockord
Type 4288
-
Hewleii"Pockqrd Type
650A
230-volt operation) .
Allow
the
insrument
to warm up
Ior about
l0 minutes.
Nore.'
Do not
adjust the
-50-volt
supply unless
one
or more
of the supplies
is actually out
of tolerance
or
unless
a complete calibration
of the instrument is
desired.
Use
a
John
Fluke Voltmeter
and adjust
or
check the
supplies
in the sequence and at the Test Points listed.
5.ry1.r
dlu.rm.nr
-50V
tl0
mv TPl30I RI303
-50V
ADJ
+50V
t20
mv TPl20l R'|213
+50VADi
+100V
t20mv
TPll0l Rlll2
+l00VADJ
+200V
t30
mv TPl00l
Rl0l2 +200VAD,
Vary
the autotransformer output voltage between
105
volts and 125 volts
and check to see
that
all regu-
lated
supplies stay within
!.1%
except the
+200
vott
supply which is
tl.5/o.
F?rr
230-volt operadon,
vary
the
autotransformer output between
210
volts and
250
volts
and check to see that all
voltages
stay
within the
above tolerance.
5.9. HIGH-VOITAGE ADJUsTMENT
Use
Sensitive Research High Voltage Meter
and
Probe
with caution.
Appty Probe
to the
-1350V
Test Point TP200l,
and adjust
R2009R (HV
ADJ) for
-
1350V
115
volts.
5.IO.
CRI
ADJUSTMENTS
o. Grqlicule Externql to CRf
To align the trace to the graticule,
proceed as
follows:
l.
Use recurrent
sweep
with no
signal
applied to
vertical
channel.
2.
Set BEAM ROTATE control R2022 to mid-
range.
3. Center
trace and rotate CRT to
match
scale.
4. Tighten
CRT clamp.
To align
the graticule to the
scan,
proceed
as
Iollows:
l.
Apply
60-cycle signal
to
the Y INPUT
and adjust
oscilloscope
for full-screen deflection,
one beam at a
time.
2.
Slow sweep rate to
50
ms/div. Note full raster
display
on screen.
3. Adjust
eccentic cam to assure full
o-division cov-
erage of
scale and
vertical
CRT
scan.
Nole;
This adjustment
should
only
be
necessary
when
the CRT has
been removed
or replaced. The
IIEAN,I
ROTATE
control
should be used for
any
alignment
discrepancies
thereafter.
Oscilloscope
4290
Aulotronlformer
Digitql
Voltmeter
I mv to
500
yolts
AC
Voltmeter
-
Weston
Model
433
Stqndord Amplitude
-
Eollontine Type 42O
Cqlibrqtor
LC Meter DC
Current
Probe
Oscillotor
5.8. ADJUSTING THE IOW.VOI.TAGE
POWER
5UPPtIES
Connect the autotransformer
to a suitable power
ource and
connect the
oscilloscope to the output o[
'-this
transformer.
Turn on the instrument
and set the
output
Ior the nominal
operating voltage
of the
oscilloscope
(ll5V for tl5-volt
operation
or 230V
for
5-4
Page 25
mointenonce
snd
recolibrqtion
-section
5
QI
OO2
.'
i'
a't;a
C
r:, ,:
02
tl
I
rI
+ 50v
Regulotor Supply
Regvlotor
Supply
r.,O"6
oiosr
[;li;l;",
Figwe
5-2.
Reor
View
Showing
fronsistors
ond
CRf
5-5
Page 26
section
5
-
mqintenonce
qnd
recolibrotion
.
5Ov
CRI202
Reciifie15
CRt 20t
cRr 302
cR200t
-
HV
Recti{iers
cRt 301
50v
Recti{iers
*204v
:
I
i
'1
il
TP200l
I350V
'1
t
f
ll
cRt002
Ir
t
cR
t 00l
ln
t-;ffi;,
-
..:r:.i{i
15v/230V
_ _-_,-.
--
-
setecior
5-5
Figure 5-3. Reor View
Showing Fuses,
Switch
ond Diodes
Page 27
mointenonce
ond recolibrstion-section
5
TPt 001
-i-
200v
I
TP] IOI
+toov
TPt 20t
+ 50v
Oj',.
.
Rt0t2
.'S'io'oou
I
c.;
," t
11.)
'*r:"i'lkv
a:"f
"
"e
i3Ji
-
adi
"i^
t''#
-.^^:'"
;-
, )
.b;,iii
Yy'
TP]
30I
.
50v
Figvre
5-4.
fop View
of Chossis
Showing fest Points,
fronsistors
ond Adiustmenls
5-7
Page 28
section 5
-
mqintenonce ond
recolibrotion
H
{A
tJl
$
5-8
Figure 5-5. Right
Oblique View Showing X E Y Peoking frimmers
Page 29
R2009
O
uv
tai
O
Pot. Corr.
il
s2r0
Beom
Brightcnins
cR2o5o cR2051
Inside
Cover
Reclifiert
Q2003
Inside Cover
Oscillotor
Figvre
5-6. Lelr
Oblique View
Showing
fronsistors,
Switch
ond Adiustment
mqintenonce
snd recolibrstion
-
section
5
-!rr
.
'$;r2
l
5-9
Page 30
section
5
-
mqintenonce
ond
recolibrotion
\-, b.
Groticule lnternol
to CRT
l.
Where the graticule
is internal to the CRT, align
the tube
so that
the
horizontal
center line is
perpen-
dicular
to the
le{t side
of
the frame, using
a suitable
6xture.
Clamp CRT.
2.
Use
recurrent
sweep with no signal applied to the
vertical
channel.
3. Center trace and adjust BEAM
ROTATE control
R2022
until trace is parallel
to
horizontal lines
of
scale.
c.
Potlern
Correction ADJ
l.
Set
Y VOLTS/DIV
switch
to CAL and. SWEEP
RATE
switch to
5
mSEC/DIV.
Note
steady square
wave
Pattern
on screen.
2.
Set PATTERN
CORRECTION control
R2009F,
until
the verdcal and horizontal
lines at the
6 x l0 cm
edges
are
optimally straight.
Note:
'fhe
display
should
fall
within
a 6 x l0 cm
and
a 5.75 x
9.75 cm
rectangular
frame.
5.II.
SETTING IAAIN FNA'
E CAPACITY FOR tV
AND HV
SERIES ONLY
(Cl03l
qnd
C1032)
o. lntroduction
The
Low
and High
Voltage Main
Frames
are pro-
vided
with a
small rimmer
capacitor mounted
be-
tween pin
I and pin
17 on the
rear
of
both
X and Y
axis blue
ribbon connectors.
The purpose
ol
these
capacitors
is to
standardize
the CRT deflection
plate
capacity
between
Type
766H Series
of
Main
Frimes.
The
standardization
of these
capacitors
(Cl03l
and
C1032)
will
allow interchangeability
of
plug-ins
from
one Main
frame
to another,
with
a minimum
of the
high-Irequency
adjustments
on both
the X and
y
Plug-ins.
b, Adiustment Procedure
l.
Obtain
a capacity
meter
with a
.,Guard
Voltage',
(which
eliminates
the
effects
of orher
capacitanies
!r^om- $9
measurements)
similar
to Tekronix
Type
130 LC Nleter,
or equivalent.
2.
Remove
the Y Plug-in
module.
3. Connect
the
"Guard
Voltage"
of the LC Meter
ro
J900t-l
and measure
the
capacity
to
ground
of
J9001-17.
Note
this measurement
a.
t'A,'.
-
4.
Connect
the "Guard
Voltage"
of the LC Meter
to
J9001-17
and
measure
the
cipacity
to ground
of
.J9001-1.
Note
this measuremeni
as
,iB,'.
-
5.
Remoye
the
"Guard
Voltage,,
from
J9001-17
and
ground
J9001-17.
-6.
Measure
the capacity
from
J9001-l
to ground.
lote
thrs measurement
as
"C".
\-
A+B
7.
Then;-
+
2 (C
-
B)
=
6.3 pf
tor the Y
side.
5-t
o
I1 not,
adjust Cl03l
until
this
condition
is
obtained.
8.
Reinstall
the Y Plug-in module
and remove
the
X Plug-in
module.
9. Repeat
steps
3 through 6 using
J8001-l
and
.J800r.17.
10.
The relationship
of the parameters
in step
7
should
equal
7.8
pI for
the X side; if they do not,
adjust
C1032 until rhis conclition
is obtained.
5.I2.
TYPE 7062
CEI TERITINAIION NETWORK
(H/F
Series Onlyl
o. l]|troduction
The Type
7062
CRT Termination
Network is
"standard
equipment" with the High-Frequency
Maiu
Frame
Oscilloscopes (Types
765H/F,
765},{II/F,
766H/F,
766NIH/F,
767H/F and
767MHIF) . It has
been
provided
to accommodate
the Type
79-02,4'
100 Mc
Dual Trace Amplifier.
b, lnstqllstionlnslruclions
The
Type
7062 is avaitable as a kit
ro transform
the
H models
to H/F models.
If a Fairchild
Type 79-02A'
is
acquired
at
a later date
and the Type
766H
Series
Oscilloscope
has
not been modified,
then the installa-
tion
of the Type
7062
CRT Termination
Network is
mandatory.
lfowever,
this installation
will not affect
the operation
of any
other Fairchild
amplifier plug-ins.
See
Figures
5-7 and 5-8 for Installation
Instructions
and
Figure
5-9 lor the Interconnecting
Diagram.
c. Peoking
Adiu:tments
(C2053
ond R20651
Figure 5- 10
l.
Hook
up Test
Equipment
as indicated in
Figure
5-10.
2.
Tack
the free
end
of rhe twin lead
to the input
of
the
Type
7062
Termination.
Note.'
Do not use
alligator clips or
other bulky
type
connectors
that
will introduce
a large
capacitive
or
inductive
lump.
A small
jack
such as
a tube socket
terminal
or amphenol
connector
would
be suitable.
3.
Display
the
top half
of
a I NIc
signal
frorn the
Type
791lA Fast
Rise Step Generator.
4.
Set R2065
LF PEAKING
ADJ
to mid-range.
A
termination
bump
should appear approximate[y
25
nanoseconds
from
the
start of the pulse.
5. Adjust
HF peaking
trimmer
C2053 to
produce
a
positive
bump 0.2
division
in amptitude.
_6.
Remoye
Type
79-02.{ Dual
Trace Plug-in,
the
Type
4294
Extension
Cable, and disconnect
ihe long
twin
lead.
-7.
Install
the Type
7062 with its normal
$/4,,
length
of
twin lead.
8._Install
a Type
76-08 or
other lower frequency
amplifier
plug,in
in
the Y
cavity.
9.
Set Type
79lA Square
Wave
Generator
for
I0
Kc.
10.
Adjust
LF PEAKING
ADJ
R2065 for
flat
top.
Page 31
Disconnect X &
Y Deflection Plote
le6ds from
CRT
mointenonce
qnd
recolibrqtion-section
5
Unsolder ond remove Y De-
Ileclion Plote leodr
ond
trim-
mer .opocilor from
pins
i
lnsioll
ihe Type 7062 Nei-
work
to Y
Deflection P,ote
:
ond l7
of J9001
Solder 300-ohm
twin leods
to
pins
I ond 17
ol J90Q1
Figure
5-7.
lnstslldtion
lnsrructions
5-I
t
Page 32
section
5
-
mointenonce
qnd
recolibrotion
lnstoll
clomp ond foslen ihe Type
7062 Neh,ork in
poriiion
Reconnect
X DeJlection
Plote
leods
through slot
os :hown
r':'ii{1
,t.
:1.
I
,i
'1
I
1
5-12
Figure
5-8.
lnstqllqlion
lnsrructions
Page 33
To
J9001-28
To J90Ol-t7
5.I3. SUPPTEMENI
FOR
IYPE 766H
iAOD IO2
oSclttoScoPE
o. lntroduclion
The
Type
766H
Mod 102
Main Frame is identical
to the regular
Type
766H
except
for the addition of
the A
i
B DC OFFSET
potentiometer Rl07l and
minor Parts List and Schematic revisions as
indicated
elsewhere
in
this
paragraph.
mointenonce
qnd
recolibrotion
-section
5
Toj900l-23
l+ 50Vl
Figwe 5-9.
Type 7062 ,nrerconnecring Diogrqm
b.
Adiustment
of A s B
DC
Offser
POT
Rl07l
When the A
r-
B DC OFFSET
potentiometer is
properly
adjusted,
there will be no depositioning of
the
trace when the
MODE
switch is set to the
ADDED
position.
To properly adjust, proceed as follows:
l. Set up Time
Base
Plug-in
for
automatic rrigger-
ing to
obtain a reference trace on
the screen.
2.
Set
IVIODE
srvitch to CH I and position trace to
screen center with CH
I POSITION control.
3.
Set
MODE
switch to CH 2
and position trace to
screen center with CH 2 POSITION control.
s-t 3
Page 34
section
5
-
mointenonce
qnd
recolibrqtion
4.
Set MODE
switch
to
ADDED. Nleasure
the
'umber
oI
graticule
divisions
the trace has
shifted or
Ys
offset
from
screen center.
5.
Set MODE
switch to ALT.
Using Channels I
and
2
POSITION
conrols,
position
the trace to rhe
opposite
side of screen
cenrer by
the exact displace-
ment
that
was
noted in
step 4. For
example, if
the
trace
was
ofiset from
screen center
by
I
r/2
divisions,
c.
Electritql Pork
list Revision
for
I|IOD
t02
Symbol
Port
Number
J1005 from
0904
438t
to
0905
76t
0
W'1001
from
5030
l39O
to
5030
1890
Rl07l
0109
l4t
o
R1055
&
0to7 2631
Rt
056
then
position
the trace
lr2 divisions
below
screen
center.
6. Set
the
A
+
B DC
OFFSET potentiometer
Rl0Z1
to
bring
the
trace to
screen center.
7.
Rotate
the
MODE
switch throughout
its range.
There
should be
no depositioning
of the
trace. Repeat
preceding
steps
i{
necessary
to achieve
this condition.
Description
Jock
tip,
block
BNC
connecto.
Coble
Assembly
Coble Assembly
Resistor,
voriqble.
composition.
50K
ohms,
120
%
Resistor,
vorioble,
composition.
30K ohms,
-r2O%,
yzW
Chonge
d. Schemotic
Chonges for MOD
102
Revise schematic as indicated in sketch below.
Chonge
Add
Delete
TYPE 79IA
SQUARE WAVE
GENERATOR
@
JAOOr
'rH'':"o.1',o,
Typ.
791lA
Forr-Ris. Stcp c.n
!
I
TYPE
74.03A
TIME BASE
lypc
4291
Exi€n.ion Coble
l,toditied with
l5 lecr
of
300()
twin leod
(*5004
12801
ond
con-
neded
,o pinr
I
ond 17
ol
iocr
5-I4
To Type
7062
Terminolion
15 {.et
300()
Twin
Leod
Output
tnt
,/
Page 35
SERIES
TYPES
tow
HIGH HIGH
VOTTAGE
VOI.IAGE
FREQUENCY
765, 765M, 766,
766M, 767, 767M
765H, 76sMH,
766H, 766MH,
767H, 767MH
7 6sH
lF,
76sMH
/t,
7 66H
/F,
7
66MH/r, 7 67H/t,
767MHlt
Synbol Pori Nuhb.r
R.comm.nd.d V.ndor
Codo Typ.
30D2084r
DDM
c296A8
DDM
83r
TCW
8,{I
SPG "titll-tyl;."
CDE
RMC 2KV
D.s..ipilon
CAPACITOR9
t..omm€nded Vandor
Cod. Iyp.
Noter: l,
All .opocitor.6re fir.d,.eromic,
ond 500V unles3
oth.nvi3e
spe(itied,
pf (ppl)
d.nore.
pi.6forods.
2. GMV d.noier
Guoronreed Minimun Volu..
Synbol Port Numb.r
OG..iption
C1208 0322 l89O elect.olyric,25
p|,
+1OO
_to./.,
15ov
cr30r
cr302 cr303
c I 30.t
0319 3890
electroly'ic,
.100
pf,
*150
-10%,
l50v
0326
9550
eleclrolyiic, lO
pf,
llOO
-r0%,
r00Y
0319
1060
0.Ol
pr,
+60
-4OY.,
150Y
0325 7840
plo.lic.
0.047
pt,
!1o'/.,
2mv
cl00r &
croo2
0326
1620
cr003 0319 3880 cr00,{ 0326 1520
cr006
0326 7810
cr007 0325 7860 cr008
0319
1050
c1009 0327 1890
Cl03l
{HV
ond LV
only) 0319 125r
cr032
o3r9
r25t
crrol 0319 3890
cl ro2
0326 7s10
cl103 0326 4520
cl
lo4
0326 7860
c o6 0319 t050
cr
r07
0327 1890
ct20t 0327 6930
.r
_ct203
0326 1520
ct701 0325
7840
c1206 0326 7860 c1207 0319 1050
5000
pf,
GMv
glactrolytic.
+100
-10%.
l50v
1000
pf,
GMv
plorti.,
A.U7
pt,
tlolo,
200v
plo3ti.,
0.1 .r!f,
!1Ol",2OOY
O.O2
pt,
+60,
-4O%,
l50V
el.ctrolyti<,
25
pl,
+lOO
-I0%,
tsov
voriobl.,
0.4-2.5
pI,
350V
vorioble,
0.4-2.5
pf,
35OV
elecrrolyric, 40o
pf"
+l5o
-r0%,
r50Y
plo.tic,
O.O17
pt,
:!
lO%, 200V
l00O
pf,
cMY
plortic,
0.1
pf.
,!lO%,
200V
0.O2
p|,
+60
-40%,
150V
eleclrolylic, 25
pf.
+l0O
_looh,
15Oy
ele<trolytic,
800
pf,
+lOO
-r0%,
t50v
l0OO pf.
Gl,tv
plo.ti<.,
0.U7
pl,
!
10.L,
2O0Y
plosti(,
O.l
ipf,
!
lOY.,2OOY
O-O2
y|,
+60
-4OY.,
15OY
ERC
80t
SPG
cRr.
CRL ERC
Etc
CDE
Rlc
ERC
Rrrtc RMC
RC
Enc
cRr.
FP
83t
c1305 0319 1050
ct307 0326 1520 cr308 0327 1890
c2003
0326
1660
c200,{ 0327 6910
0.02
pf,
*60
-10o/o,
ISOY
l00O
pf.
GMV
elecrrolyri., 25
pf.
+lo0
-ro%,
r50v
0.O2
pr.
GMY
ele.lrolylit, 25
pl,
+l0O
-r0%,
r00Y
c296AB
c296A8
DDM
A8D A8D
ERC
cRt
Enc
CRL
TP
c296AB
831
c296AB
DDM
TP
83r
c296A8
c295AB
DDM
C20O5 0326
7660 .l.ctroly'ic,
1
pt,
+l5O
-10%.
50v
C2007
(Hv
o.d HF
oily)
0327 6890
elec,rolyti(,
500
pt,-150
_2O"h,]2KY
c2008
&
c2oo9 0316 4930
0.01
pf,
+too
-0%,
2ooov
C2010 0327 5890
electrolyl;c,
500
pf,
+50
_2O.h,12Ky
c20ll 0316 4930
0.01
pf,
+too
-o%,
2ooov
C2Ot2
0326 4660
O.O2
pf,
GMy
C2013
0316 9190
|OOO
pt,
-,2O.L,3tn,y
C2014 0316 4930
0.01
pf,
+tOO
-O%,
2OOOV
C2Ol5
0327
75OO pl$ti.,
O.1S
pt,
L10"/o,
4o0v
c20r6
0316
,{930
0.0t
pf.
+too
--o%.
2ooov
C2017
{HV
ond HF
only)
0326
,1620
5000
Ff,
cMv
2Kv
811 3KV
2Kv
c296AC
2KY
SECTION 6A
ELECTRICAL
PARTS
LIST
AND
SCHEftTATIC
INTRODUCTION
The Fairchild Types
765, 766,
and
767
Family
of
Oscilloscopes
are ayailable in three
basic form factors:
bench,
rack, and portable models. The Portable
models
are identified
by
the
Type
765
numerical
Series;
the
Bench
models
by
the Type 766
numerical
Series,
and the
Rack-mounted
models
by
the Type
767
numerical
Series.
In
addition, there are alphabetical sufrxes appended
to the numerical
series to
iclentify
special electronic
circuits.
The
suffix
H denotes the high-voltage
oscillo-
scope
with
an accelerating potential o[ l3 Kv. The
low
voltage
option is
5 Kv
and these
series oscilloscopes are
identified
by the
absence of the H alphabetical
suffix.
The
suffix
F denotes
the high-vottage,
high-frequency
model;
the
sufrx
M
denotes the militarized model.
The
Type
766H
Series Oscilloscope
may be categor.
ized
into three basic
Series as indicated
in Table given
below.
ERC 801
6-l
Page 36
section
6o-ports
lists ond schemotic
c20r8
a
c20!t
0326
1620
czo20 0327
69to
c2071 0325 7a20
Hot
r r0o
5210
Fr02
I r00 02,()
fl t0 r r00
0760
FI20
ttoD 0770
Fr30
r r00
0760
Fl50
only) t too
5280
HRI501 lo HRI506
only) 6900 251l
HYlO03 ro HYl0Og
765 & 767
only) 2110 1590
!
,,Yl30l
(Type5
only) 2t r0 r560
6-2
Symbol Pad Nu6b.r
O.i..lptlon
5000
pl.
G
v
0.0033
/rf,
120%,500ov
plortic,
0.022
$1,
!10.h,
200Y
C2O22
0326.1640 0.01
p,,
GMY
c2023 0313 4580
0.02
r!f,
+ro0
--o%
SEMICONDUCTORS
Clt0Ol lo
CRl003 2600 9220 diod., rili<6n, 1N4384
Cnloo,t 2600 6910
diod., tD8,{l
CX]0O6 2600
9240
diod., ]N98OA
ctl rol & CRllo2 2600 9220
dioaa,3ili.on, 1N4384
Cnll0r 2600 6910
diod., FD8al
cRl20t &
Crl202 2600
9220
diod.,
rilicon, lN438,a
Cll2oa
2600 6910
diod., rD8,lt
cRl30t &
CRl302 26@
9220
dtode, 3ili.o,',
1N438{
CRI3O,a 2600
9230
diod., 1N823
Cl200O
26@ 9220
doidc.
rili.on, 1N4384
CR2O0! 2600 27ll
roctifi..,
n.rolli.
c[2@2 a
Cr20O3 2600 9220 dioda, sili.on, lN.l38.l
cR2o50 a cR205l
only)
2600 3031 re<tifier,
'nelollic
CR2O52 2600
3031 rc.rifi.r,
m.tolli(
tAriPS
Dsl,lol
l2Ol 1280
incondc'r.nt,
6.3V
El40r &
E11OZ
l2O0
l3l0 incoid€r..nt.
boyoncr,
#47
R..oflm.nd.d V.ndo?
Codr Typ.
Etc
801
cPc
DAorsct
A.tx
c296A8
ERC
8l I
RMC Plug-in B
Synrbol Port
Numb.l
ETECTRICAT
CONNECTONS
J l0ol
(Portoble
only)
0905 9320 receptocle,
rolnd,
3 conrocts cE BRt,4
J l00l
{Bench
dnd
only) 0905 8440
recepro.le, rou.d,
3 .ontocrs cE
Jlool O9O,l
,a3El
io.r,
tip, bt6ck
ltv
p-p)
ABo
.12001
{B3nch
ond
6nly)
0905 7510 re.epiocle, 8NC, rr,
,emole,
l.6nld.l
L.oirn.nd.d V.ndol
D..(dplion
Codr Typ.
UG 625 A/U
aPH
26 190
32
GEN
FCt
EIA
GEN
FCr
GEN
fct
G€N
EIA
GEN
ABD
GEN
J8001
&
J90Ol 0905 7360
r.c.ptocl.,
g.ncrol
purpot.,
fehol.,
32 contoci!
P2001
(Bench
ond
only) 0905 9150 .6yer, electli@|, BNC
DAG
tv
tERtES
P2002
(8en.h
only) 0904 42ll
HY
connecto. o!3enbly ABD
P2002 Porioble
o.d
only) O9O4 4212
HY connedor o3renbly
ABD
ABO
ABD
3
r
3003
3r2.5@
3t2001
3 t 20!.5
3r 20ot
HV AND
tV sERIEs
P2002lBench
only) 0904 43ll HV .onnector olsembly
ABD
P20O2
{Porroble
dnd
only)
0904 4312 Hv conne.lor osrenbly
ABD
GE
GE
rFl tFt
Lfl
Lft
tft
colt
12001
2l0l 84,11 Beom
iotolc A8D
FUSES
3
onp.r...
,lo-blo
0.5
o'r'p.r.
HEATER
ELE'\AENTS
HYBRID
COIIS
tfr
313002
ot00t &
Qlm2 2600 72AO
26co
72sO
01003 2600 9170
2600
9150
Qlosl
2600
7210
2600 7200
Qt
tot
&
Ql102
2600
7280
2600 7250
ol103 2600
9r7t
2600
9t5o
Ql20r a
01202 2ffi 7280
2doo 7250
Q1203 2600 9170
2600
9t50
Ol30l
ro
Qr303 2600 7280
2500 7250
OI30,( 2600 9170
2600
9150
42000 &
o2@r 26@
92@
Q2002 2600 7280
2600 7250
02003 2600
9170
2600 9t50
TRANSISTORS
DU
#68
olrerno!.,
2N1893
DU
#5rA
olr.rnoi.,
2N34,12
DU
#5
olicrnot..
2N697
DU
#68
olternol.,2Nl893
Du
#5rA
ollernote,2N3,a42
DU
#68
olternore,
2N I S93
DU
#5rA
olternot!,2N3442 DU
#68
oll€rnot€,2N1893
ou
#5lA
ollernore,2N3442
2N3390
DU
#68
oltcrnole. 2N 1893
Du
#sr
A
olternqre,2N3442
FCr
stt
FCr
FCt
stt
FCr
stt
tct
stL
GE
FCt
FCt
FER
FER
Page 37
Symbol
D.s(ription
RE5ISTORs
Rlool
0234 9120
Rl002
0234 8490
Rloo3
0231 8010
Rto04
0234 8l
to
R1005
0237 9530
t1006
023,t
80t0
R1007
0234 8690
Rt008
0231 8040
Rr009
0237 0160
nror I
0237 9470
Rl0l2
0to9 t760
Rlol3 0237 9170 Rl0t4
0203
1180
fio5t
0234
8490
nr052
0236 7380
R1053 0235 58rO R1054
0236 5550
Rlo55 & RlO55
{Iypei
766H ond
7664H
Ser;ej
o.ly) ot07
7631
Rt l0l
0234 8530
Rl102
0234 8590
Rl to3
0234 8040
Rt
lo4
0231
8t
t0
Rr ro5
0237
9170
nl106
0231 Eolo
Rl r0z
0234
8690
Rl r08
0234 8040
Rl109
0234 1340
Rllll
0237 91lO
Rl
2 0109 1760
Rt t l3
0237
9l
t0
Rr2or
0231 8490
Rf202
0231 9290
R1203
0234 8510
n1204
023,t 8040
R1205
0237
9170
Rr206
0234 8l t0
n1207
0234
7990
R1208 0231
8690
Rt209
0234 8040
R l2l
I 0233
5400
Rt 2l2
0237 9110
Rl2l3
0109
1750
Rt 2l4
0237
9110
Rr30t
0234 8530
R1302 0237 A190 R1303 0109 1760
Rt 304
0237
9110
xr305
0234 82IO
R I 306
&
R1307 0234 8040
Rr
308 0237
9r0
Rr309
0234 8040
Rl3t I 0237
9110
Rl3l2
0237
9630
Rl3t 3
0234 8t l0
nl31.1 0234 8040
nl3 f6
0234 7990
Rr 3l7 0234
8590
3t8 0222 4550
\ {Izl0l &
R]402
0234 80t0
Rr403 0107 2313
36K, lW
t5K
2N
390
17.aK,
!
tlo, lw
200
t@K
2N
30, 2W
l2.tK,
tl%.
tw
voriohl.,
wire wound,
l(,
t
r0%
(+200v
ADJ)
12,1K.
).1%,
tW
(omPosilion,82OK
l5K
59K,
1l
%
t5(,
ir%
750,
i1.//
Yorioble,
compolilion,
30K,
:l:20%
(Po3ition,
22K
39K
200 390
r
2.lK,
tr%.
rw
200
t 00K
2N
5, 3w
5.1tK,:lt%,
tw
voridble,
wir. wound.
tK,
1r0%
{+100v
ADJ)
5,r r K,
tr%,
tw
l5K
t0K, tw
r8(
2@
12.1K,
tl%,
lw
390 120
r
00K
2@
wire eound,
5, 7w
5.1I K.
tl%,
lw
vorioble.
wir€ eo'ind.
lK,
aro%
{+50v
AD'
5.r I K,
il%,
lw
22K
s52,
!1,L,
1w
Yqriobl.,
wir. wound.
lK.
i
t0%
(-5oy
ADJ)
5.1|
x,
il%,
lw
]K
2@
5. K.
t
r
o/.,
lw
200
5.t lK,
t
I
%,
tw
17.0K,
!1%,
1K
390
200
120
t00K
wire wound.
5, 5W
150
vorioble, wire wound,
50,
tr0%
(scAtE
.tuM)
n2000
0203 2070
R200r
0234 8530
R2002
0234
8610
R2003
023,{ 8540
R20o{
023,t
8580
e2005 0203 1860 n2005
0234
8360
R2007
0203 2700
R2008
0231 A520
R20O9 F/R
0109
rfl0
R20r0
0234
8620
R20I
0203 60
R2ol2
&
R2013
0203 7210
R2014
0108 0250
R20t5
0203 t040
[2016
0t09 2300
R2017
0203
0850
t20t8
0231 8690
n2019
0203 2150
R2020
0203 1380
R2021
0203
2170
R2022
0107 2731
R2023
(Be.ch
o.d
only)
0203 2130
R2024
0234 8300
R202s
0237 5970
.
R2026
0203
6120
R2027
&
R202a
0231 8690
n2029
0234 8490
e203l
0234 8580
12032
0231 A520
R2O34
(HV
ond HF
only)
0236 3l7O
R2035
(Hv
ond HF
oily)
0203 2130
R2036 0203 3610
sror 0503 2480
Sl02
(por,
of
Rl4O3)
0107 2313
st03 2800 3050
only) O5O3 2.100
s2l0
0503 2460
MUT 4633
KXM MCt0-5
Not.! All re3i3lo.s
ore lired, rilm,
!5%,
ond
thw
onless
orherwii.
3pccified,
K
=
lhootond,
l,{
=
nillio..
crs
2-.15
ccw c2o
AL8 EB
AL8
EB
AtB
Tr00t
T200t
2001
4851
2001 1821
TPtoot
0905 8450
TPt
r0l
0905 8450
TPt2ol 0905 8450
TPt3or
0905 8450
TRANSFORMENS
high'voltoge
TEST POINTS
io.k,
rip, red
(+200v)
iock.
tip, red
(+100Y)
io.k,
riP, red
(+50v)
io<k,
rip. red
{-50V}
EtJ Sericr 105
EF.l
Series t05
EfJ Series 105
EFJ
Series
r05
A8D
ABD
ports
lists
ond
schemqtics
-
section
60
R€comm.nd€d
V.ndol
Cod. Typ.
ccw c32 ccw
c20
ccw
c20
ccw
c20
ccw
c5
ccw
c20
ccw
c20
ccw c20
ccw
c42S
ccw
c5
CGW
C6
At8 EB
ccw
c20
ccw Ns20 ccw
Ns20
ccw Ns20
a80
ccw c20 ccw
c20
ccw c20 ccw
c20
ccw
c6
ccw
c20
ccw
c20
ccw
c20
wot
3x
ccw
c6
CTS
AW
ccw
c5
CGW
C20
ccw
c32
ccw
c20
ccw
€20
co\M
c6
ccw
c20
ccw
c20
ccw
c20
CGw
C20
DAt
RSz
ccw
c6
CTS
AW
ccw
c6
ccw
c20
ccv/
c6
ccw c6 ccw
c20
ccw c20 ccw c6 ccw c20
cG\{ c6
ccw
c6
ccw c20 ccw c20 ccw c20
cow
c20
wol
sx
ccw
c20
A8D
Synbol Pdrr
Nvmb!? D.s.riprion
conposilion,
330K,
:!lo%
AtB
72K
CGW
17K
ccw
21K
€GW
36K
CGW
comp6ition.
5.6K,
!10%
AtB
4.3K
ccw
compoiition,
3r,^.
]:lo%
ALB
2OK
ccw
EB
c20
c20
c20
c20
EB
c20
EB
c20
voricble,
.ohp03iiion,
500X/
IOOK,
A2O%
(PAITERN
CONR/HV ADJ)
5tK
.omposition,680K compo3ition, l.5l{, 2W
vorioble.
.omp6lition,
2.5M,
t20%
(FOCUS)
.ompoiilion,220(
voricble,
Gonpo3ition,
50OK,
L2Ot
,
lW
(TNTENSITYI
.onpoiition,36K
100(
conporilion, 1.5|1.
=
l0%
compo3ition,
5.6fi
.ompo3itiotr, 2.2t,
tl),l"
vo.iobl.,
2Ol(/2OKl50OK
lBEAlv{
ROTATE)
<ohpo.ition, :M,
t
l0%
2,4K
<ompolition,5.l
co,nposilion, 33, 2W
l00K
I5K
36K
20K
compo'ilion,430X
.ompo3ilion, 1M.
t
1O%
compo3ition,3.6K, l\ry
swtTcHES
3lid€, DPDT
{l
l5v/230V)
(POWER)
thermoitollc
(THERMAL
CUTOUT)
therhoiloti.
ELM 2200-!
slide, 3PDT
(NORrnAt/SINGLE)
COW
r..omm!nd.d
V.ndor
Cod.
Typ.
crs
37
AtB
EB
cr.s
53C
ATB
EB
ccw
c20
ALB
EB
AI.C
EB
ALB
E8
ABD
AL8
EB
CGw
C2O
At8
EB
AtB
HB
ccw
c20
ccw
c2o
CGw
C20
ccw c20
ccw
c20
6-3
Page 38
section
6o-ports
lists ond schemstics
Syrnbol
Porr Numb.r
O...riptlon
CATHODE-RAY TUBES
Low-Voltoge Series
Y2o1
2501 0551'r
F2650-o.pt
{MET)
AgD
2501 0552*
F7650-O-P2IG
(MET)
A8D
2501
0553'r
r7550-o-p2lB
(MET)
ABo
25ot 0554'r' f7650-o,Pz
(MEr)
ABD
25ot 0555* F7550-o,Pt r
(r,,rEr)
aBD
2501
0556'h
F7650-o.P3r
(MET)
ABo
High-Voltoge
Series
25or o56t*
rz66o-o.Pt
(MET)
A8D
250t
0562*
F766O-O.P2/G
IMEI)
A8D
2501
0553+
f766O,O-P2l8
(t\ET)
ABO
25ol os64* F766o-o-?t
(
Er)
aBo
2s0r
0565*
F7660-O-P11
(MET)
A8D
25ot 0566j t766o-o-P3t
(MET)
a8o
High-Frequency 5eries
25ot 068l* F7670-o-Pr
IMET)
ABD
25oI 0682*
F767o.o.?2/G
$Er)
AB0
2501 0693* t767o-o-pz/a
lt
Er)
ABD
25Ol
0681*
\767O-O.P7
(MEr)
ABO
25ot 0685* F75zo"o-Pr r
IMETI
ABD
25ot
0696*
Fz6z0-o-P3l
0nETl
ABD
Y
Dependi.g
on soler order
.
CABTE & WIRES
W2051
5028
9061
3oo-ohm
cobl. lcrminotion
5028 6900 6"
#2,a
3rronded wnc
tbh(u
5028 6930
7'
#24
5trdnd.d wire
lor.ngcl
5028 6160 8"
#24
skcnded wi..
lblucl
CTAMP ASSEIVIBTY
37Ol
32,11 clohp
6O09 6180 screw, MSBH.
6-32 x l/2
6200 3670
wo3h.r,
floi,
#6
6210 0030
wo!h.r,
lo.k,
#6
l.Godm.nd.d
V.ndot
Cod. typ. Sy
bol Pod
Numb.r
R.<omi.nd.d
V.ndor
D.*rlpllon
Cod. Typ.
CABTE
Wloot
5030 l39O o.rcmbly
Mtt
IYPE 7062
CRT TERiAINAIION
NETWORK
(High-Frequency
Series
Only)
Symbol Porr
Numbor
D.3.rlprion
c2051 a
C2O52
0319 7450 Capocilo., fired,
..romic, 15
pf,
1l%,50OV
C2053 O3lt 1253
Copo.ilor, vorioble,
0,65-3.2
pf,
350V
c205,(
&
C2056
0319 2,(20 Copociror,
lir.d,
.ompotition,
1.5
pf.
t5%,
5O0V
C2O57
0319 1050 Ccpocitor, tixed,
(.romic,
O,O2 pt,
+60
-1O%,
l50v
Diod., 1N3062
Coil,
icrminotion,
9 twnr.
#27
*irc
Coil, indu.lonc., I twn
,
#27
r/it.
Trontiltor, DU
#
28A
olt.rnot. lron3irtor, 2N30t3
RESISIORS
Nof.. All
r.siitorc ore fixed, til
,
!5.h.
or,d
thw
unl.3s olh.rwiio
ip.citi.d, K
=
lhou3.nd,
M
=
million.
R2o5l
o23z 5600 20.5K.
Lt%,
tlow
R2052
&
t2053 0234 8310 3.5K
R20s,r
0237 5680 20,5X,
!1"h,
1/eW
R2055 0235 6210
.onpo';lion,
lr,
tl0%.
t/4W
R2056 0237 57c,J 38.3K,
!1.A,
tt'\t
R2057 to
12059
0237 6120 3@,2W
R206r
0237
6120 3@,2w
R2062 &
12063
0234 79oO 5r
?2051
0231 86t0
47K
R2065 0109 3580 v.ri.blo,.onporiti6n,
Iox, o.lw
(PEAX
ADJI
R2066
0235 6210
(ompo.ilior,
lM,
alO%,
I/4w
Ct205l lo
c?20s6 2ffi
8670
1205t
&
12052
2l0l 9,141
12053
A
1205,a
2l0l 945t
02050 &
Q205t 2600 8.fi0
26@
8390
6-4
Page 39
SECTION
68
SPARE
PARTS
LIST
sPARE
PARTS REOUIREiAENTS
o.
Generql
The Type
766H
Transistorized Oscilloscope
is
an
extremely
reliable and dependable instrument. Only
components
thoroughly tested and approved by the
engineers
of the
Quality
Assurance
Department are
used in this instrument, Continued perlormance tesB,
environmental and life testing of production units
make
certain your instrument will give many years
of
satisfactory service,
These new Fairchild instruments
are precision-engineered
and require no selected
parts.
Two
lists of
"running
spares"
are included to aid
you
in periodic maintenance.
The running-spare
parrs
lists
include recommended quantities
and reference
symbol
numbers.
Section 6A ol this Instruction
Nlanual
gives a complete listing of all components and
their
recommended vendors
so
that you may readily
Procure
them {rom
a local supply
house
or your own
stores,
Note:
The local Fairchild Scientiftc Insfument
Field
Engineering representative and
his
service or-
ganization
can assist you
in obtaining any additional
components
in the shortest possible time. To help
expedite
service, always give the Type
Number
and
Serial
Number of the instrument; always
specify
the
part
number and give a description of the component
(see Section
6,4 of this
manual) .
b. 500-Hour Spores
(6
monthsl
The recommended list lor
one through three units
is
given
below.
DIODES
cRr00l
lrN{384)
..............
cRr004
(F08,fi)
..................
cRr006
(lN980a)
..............
cRr3o4
{rN823'
................
cr200t
(
,tEr)
cR2052
(r,rET)
1
I I I I I
I I
cr302 ..................
c1303
.............-.-
c2003 ..................
c200,r ..................
LZUU5 .....,.......,....
c2008 ..................
c20lo ..................
c20t3 ..................
c2015
......._..........
c2020
..................
c2022 ....._._..._.._...
tArvlPS
DS l,{0t
E'I40I
c. 2Od)-Hour Spores
(2
yeqrsl
The recommended
list for
one
through
ten units
is
given below. Maintain
spares
indicated
plus one for
each
oscilloscope
in
use;
2 oI
each set
of
the 500-hour
spare
list given in paragraph (b) plus the quantities
listed
as lollows:
Symbol
CAPACITORS
Qudntily
Symbol
Osonti?y
cr00r ..................
cr003 ..................
croo{ ..................
cr005 ....,.............
c1007 ..................
cr008 ..................
cr009 ..................
cr03r ..................
cr0t ..................
sr20r
..................
EIECTRICAI. CONNECTORS
FUSES
SyInbol
H0l
.....,.....,.....,,.
Fl02 ....................
Fll0
.................-.
Fl20 ....................
Fl50
("r{"
,{odelr
onlyl ...... ...
Symbol
,r00r
J
t00l
J 1005
J200t
J800r
P2001
P2002
?2002
Quo,rrlry
Quonllty
I
I
I I
I
(Portdbl.
Models
only) ........................
tBench
ond Rock
Models
onlr) ..........
for Typ. 766 tV
S.ri6
For Typo
766 HY
Series
For Iype
766 HF Series
ot 00I or003
Q
I05I
o20d)
o2002
TRANSISTORS
Synbol
Quonlity
{Bench
ond Rock ,{odelt
only) ..........
(Bench
ond Ro.k I'todeli only)
..........
(Bench
Model 06ly) .................. ...
.......
(Porioble
ond Ro(k Mod.l3
only) ... ...
HEATER EI.EMENIS
l"rrl"
S.ries Onlyl
Symbol
Quonlity
HRI50l
................ 2
HYBRID
COILS
(Typei
765 & 767 serie5
Only)
HYr003
................ 2
HYt30l
................ 2
CATHODE.RAY TUBES
t7650-O-P7 / a
t7660-O-?2
/ C
t7670-O-P2
/ G
(DU
#68)
.............. 3
tDU
#sra)
.......... 2
IDU
#5)
................ r
l2N33m)
................ r
{DU
#
rq .............. I
6-5
Page 40
cooE
LIST
OF RECOMMENDED
VENDORS
co0E NAIAE
A8D Du /vtonr Loborolori.3
AEn
AarovorCo.porolio.
AHI{
Arrow-Hcrt & H.sGnon
EI..Li. Compony
ALB All.n-Srodl.yColnpony AtC
Alli.d Cont.ol
AICO
Al.o El.(rronit
Prodocrt
ALD
Ald.n
Producls ComFony
AllA Anolon
El..lro,lic
Hordworc
A.tP
Ahp ln..
AriAt
AmP.rit! CorPonY,
ln..
Ar,lI
Aopct.r
Elcctroni.3 Productt,
lnc.
APC
Am.ri.on Phcnoli( Co'pordlion
APH
Anph.nolEl.<tronic.CorPorotion
AIC Ar.o
El.ckoni.t lnc.
(Elm!n.o)
AST
Attron Corporolion
AUT Automolic
l ct.l Produd3 Corporotion
BEI
8.lfG.
INS 8ou.nr
In<.
BUR Burndy Engrg. Conpony 8US Eui3monn
rnlg. Conpony
CAN Connoa
El.clric Cohpony
CiS CBS-Hytron
Divirion of
CIS
CDE Corn.ll-Dubili.rEl.clri(Corpo.olion CCW Co.ning
Glotr Wortr
CH Cvll.'-Homm.r,
ln..
CHC Ch..l.. Cobl. Corpotolion CHr CholhcmEl..l.onic. CIN Cinch
r orufoduring Compony
CLs Clo.orbr Mtg. Co.,
Inc.
COC
Contiacntol
Corbon
COM
Como.
El.d.ic
COW
Coniin.nlol-WirlEl..lronicrCorporolior
CPC
C.
?. Clor. & CoDpony
CRL
C.nrr.lob,
Divitlon ol Glob.-Union,
lnc
CSt
Chicogo Stcodo.d
Tro.tformlr CorPo.Elion
CTC
Combridg.Th.rnioni.Corporotion
CTS
Chicoso
Tclcphon.
Supply
Co.porolion
DAG
DoE. El.clric Compony,
lnc.
DAt
Dol.
Prsducl!, lnc.
DtC
DidlighlCorporolion
DtK
D?ot. ,ifg. Compony
EBY
Hugh H. Eby. lnc.
EDL
Edol lndu3tric3
EIA
Any nonuloctur.r m..ling
EIA rlondordt
ELC
Elc.rro Monufocluring Compony
EtD
Eld.na Corporotion
EMC
El.clro Motiv. r,1lg. Compony
EMW Elnwood S..3or!,
ln..
EtC Eri.
Xe3irtor
Corporotion
ESX
Eis.r El.cironi€3
FAS' John
E. Fort
Conpony
FCI
foirchild Com.ro
ond lnltru'n.nl Corporotion
fER F.r.oxcub. Corporolion
of Am.rico
cDE Good-AIl
Elcctric Mfg. Compony
GE
G.n.rol El.crri. Cohpony
GEN Gane'ol
ln3lru ent
Corpordtion
cEP
G.n.rol Produ(b Corporotion
Gl.8
Glob.
lndl,llri.t
GRC
Generol
Rodio Co'npony
GXY
Groyhill, lnc.
cUD
Th. Gudc'no. Compony
HAM
Th. Sohnorlund l,tdnltodurinE Co., lnc.
HON
Honeyw.ll
HOP Hopkinr Ergi6..ring Conpony
HP H.wl.lt-Po<ko.d Compody
IEC lnlernotionolEl..lronicrCorporotio. IRC lnt.rnolionolR.!i.ron(.Compory lI? lnt.rnoliotroll.clifi.rCorporolion
ITT
ITT Compon.nl.
Oivision
JEF J.ffcrr
tlcclroni<3, lhc.
JHN E. F.
Johnion
Cohpqny
,m
.,.
w. fiill.r Co'npony
XUI
Kulkd El.<l.ic
^{f9.
Co.
lnc.
KXi.t
(liron
ll.tol. ond Control
Corporolion
tED Led.r lnc.
tEE L.c..ofl Mfg. Compony tFl
Liltl.futc,
ln..
tlN
tin. El..tri.
MAt P. t. }lollor, & Compony.
lic.
r
CR ,,ticro Swirch
(Divi3ion
ot
Li6n.opoli.-Honcyw.ll
Mtc
IAOT
MUC
NYT
OAK
PHC PHI
?LS
POT
Ptc
PYR
tca
tMc
TOY
ITN stG
slL
stf
sot
SPG
src
srw
5UM
sYt
SYN TEC
TEX
THC
IOR
TRS
rnu
TUG
ucN
UTC
Ytc
wDt
WDL
wE5
Icsuloror Co.)
,{icomold Elc.rroni.i
r,lfg. Corporolio'l
^lillcr
Elc.rri(
Compo[y
Motorolo S.nicondu<to.
Produ.lt, ln<.
M.O VolYe Compahy
Lrd.
Mucon
Corpo16lion
Th.
Mur.r Conpony
N.w York TrontrormGr
Co'npo.y, ln..
Ook Mrg. Compony
Philco Corporotion Philip3 E..tro6ic
Tub. DiYisior
Plortoid Co.porolion
Pottlr & BruBfi.ld, lrr.
Pr..iiion X.rirlor Co.,
ln..
Pyromid El..tri. Co,npony
iodio Corpororion
of Am.ri.o
Rodio
r{ot.riol! Corporolion
Xoyol El..lric Corporoiion,
1ll..
Rotroi
l'tfr.
Cornpony
Signolil.
In..
Silicon Tronsirtor Co'porolion
S.olo.tro Corporolior
Solilron D.Yic.., lnc.
sprog0. El.clri. Corpony
Slockpol. Corbon Compory
Slondord
Winding Compony
Surnit
Coil Co,npon,
Slon
y.t
Winding
Compony
Sylvo.io
El!.lrir Producir,
ln(.
Synlrooic lnsiruh.ntt,
lnc.
Tronsitlor
Elecironi(3 Corporotion
Teror l6'tr', cnl3,
lnc.
Therlhol Control,
ln<.
Torringlon
r lg., Conpdny
Iru-Ohm
Produ.t3
TunE-Sol El..lric
ln<.
Ucitrit! Conpony
Uniled Tronlformer Codpony
Thc Viclor..n
l.rl'umcnl
Compory Wood Elcctri. Corporotion Word L.onord Ele.lric Conpony
Weslon Eledri.ol
lnslr!m.nl
Co.porclior
W.lwyn lnl.rnolionol
ln(.
Page 41
INSIRUMENI WARRANTY AND
SERVICE NOIICE
CHANGES IN
SPECIFICAIIONS
The
right
is reserved
to change
the
published
WARRANTY
The
Instrumentation Division warrants that
each new
Cathode-ray
Oscilloscope,
Automotiye
Test
Equipment, and
other
Electronic or Electrical
Test
or Measudng Equipment
(hereinafter
referred
to as
"Instrument")
manufactured or sold
by it, i8
free from defects in material
or workmanship under
normal use and
service for a
period
of one
year
from the date o{ its sale
to the first
use. If, upon
examination
by F
ment is detei:dned to be dELt
or material, F
airchild's
option, be.
registration
thereof
is
promptly
provided
below.
This warranty is in
lieu
all other
warranties,
expressed or implieil,
and
specifications
of equipment at any time
and
1o
fur.
nish
merchandise in
accordance
fications
without
equipment ment
Clifton,
New Jerrey
Instrument Service Departuent
will then
send
to the customer
the written
procedure for
dis.
position and shipping instructions.
All equipment
should be packed and
shipped in accordance
with
this
procedure;
and identification
tags
should be
attached
to each
tube or
irrstrument.
REPTACEIAENT PARTS
If it
is necessary
to order a replacement compo-
nent
from tfie Iactory, always give
the
Type number
and Serial number
of the Instrument. Belore
order.
ing
parts
for
in-warranty
replacement or
purchasing
them for out-of.warranty replacement, be
sure to
consult
the
Parts List
in the
Instruction
Manual.
The Parts List
gives
the values, tolerances, ratings,
and Fairchild part number {or all electrical com-
ponents
used in the Inetrument. This will help to
expedite service. PATENT NOTICE
Manufactured
under one or
more U. S. Patents
owned
or
controlled by Fairchild Camera
and In.
strumeut Coiporation.
50 Somerset Place,
CliI-
ton, New
Jersey,
U.S.A. Patent
Numbers supplied
upon request.
no
one is
autfiorized
to assume
any
liability on
behal{
of Fairchild
or impose
any obligation upon
it in
connection
with
the sale
of
any Instrument,
other than
as stated
above.
REGISTERING
THE WARRANTY
To
register
this warranty,
the
enclosed
warranty
registration
card
must be properly
filled
out and
ruailed
to the Instruneut
Service
Department
imme-
diately
upon
receipt of
the
equipment.
Complete
inlormation
is necessary.
BOTH THE
TYPE
NfuM-
BER
AND THE
SERIAL
NUMBER
OF THE IN.
STRUMENT
MUST
BE
GIYEN
ON THIS
CARD.
Instruments
must
be
examined immediately
upon
receipt,
since
claims Jor damage
in transit
will not
be honored
by the
carrier
unless prompt
action
is
taken.
nirt-g the nature
gftle-
manner itl wtich the
5-occurred.
!!E-
NUI{BER-? the
6-8
Page 42
;'f
i
-ti
*,1
tl
'l
['
t
.,
a
f!tl
l:i r- l
liiiil
LIiJ
i!i
i,i
! i!t
ll
i
il
-=]
si
i
i! !
ii : !3 !;
i: i i!
iiiiii
1i
i;li
i!iiir
.l I oe!:
I
Page 43
f+"ij-ri-;;;a]
itil-
i I l
-..'
l I
,l
L t^ t
t"-t
r"*
tl Ll
t|ll
I <-*
L__,_l
J
I
-,".t:'"i
l
;;-l
,r.
I
't-
J"'
f:50iaauL}Ml
E@
@l
"t
,
1.-..
nl
F.^^
.1*'-
t---=;;;--_-T
| '*'b_ I
Page 44
TYPE 766H
(Reference
ADDENDUM
roR
SERIES
OSCILLOSCOPA
Manual
1t6704
5893)
The
followlng
changee
were
made
to Lmprove
the efficlency
of the
voltage
osci l1oscope.
EI,ECTRICAI,,
PARTS LIST
.
Elmbol
Change
CR200 3
Delete R2024
P art
N umber
ln order
htgh-
Des
crlptlon
Dlode, sLllcon, 1N4384 Dloder FDc3091
Reslstor, fLxed, fllm,
2400
ohms,
+51
,
L/2W
cR2003
FDG
309I
R2025
fron to
2600
2600
0234
9220
8020
8300
SCHEMArIC
REVI9TON
Change Sheet
2
of
schematLc as
ehown
ln sketch
below.
AFTER
qzo
o2
R 2006
R20lo
T200r
I
tl
lr
F^F\.IREHIT-E
INSTRUMENTA.TIcfN
*6704 706L
Sheet l
of I
ECN
#32,24I
qzoo3
R2023
c
R 2003
I
N4384
(-
)
^
orvlSto,r
ot fltFcHtto
cAMtRa ltao
tNSIiUrEiT
COipOlATtOn
Page 45
ADDENDUM
FOR
OSCILLOSCOPE
TYPES
SPECIFIED
IN
INTRODUCTION
1R.f..urr."
Manual
Pa.rt
No.
6704
5893
and
Supplenent
Part
Number
6704
4633)
A.
INTRODUCTION
This
addendum
PertaLns
to
the
foLlowing
type
oscllloscoPest'
765H/8,
7
65M/H,
7 65t{[t/E
766H/8,
766M/H,
766MH/E
767fi/F,
767M/H,
767NH/F
were
made
to
elimlnate
400
cycle
bearn
REVISIONS
aE
speclfled,
the
following
compoients,
des
cri
ptions
Part
Number
Descrlptlon
Type
757
Type
765,
765M,
Type
756,
765M,
Type 767,
767M,
PURPOSE
765H,
7
66H,
7
67tt
,
B.
c.
The followlng
changes
modulatlon.
EI,ECTRICAL
PARTS
I.,IST
Change,
add
or
delete
their
part
nunlrer
and
Symbol
lczoza rczoz4rl
I
Addl---lnzoot
l_1zore
s
R2024
0316
9190
1200
3960
0235
s400
0234
8690
caP.
3KV
Lamp
Res.
L/4
Res
.
Flxed
Ceramic,
0.00L
uf,
Glow
NE2
Flxed
ComPositLon,
2 meg,
!{,
5t
Fixed
Fllm,
L00K,
1/2w,
5t
6704
762L
Sheet
l of
2
ECN 32,341A
Delete
R20I8
r
IMPORTANT
REFERENCE
DESIGNATION
C2026
PERTAINS
ONLY
TO
EHE
TYPE
757
iriiiiioiCopr.
oN
orHER
uNrrs
usE
DEsrcNArroN
c2024'
INSTRUMENTATION
{
t)rvrsrLrrl
ot
lalRcrllto
cAMt(A
ANU
rNSrlOMtNl
CollPoRAlrox
Page 46
ADDENDUM
FOR
OSCILLOSCOPE
TYPES
SPECIFIED
IN
INTRODUCITON
(Reference
Manual
Part No. 6704
5893
andl
Supptement
Part
No. 6704
4633)
*
A.
INTRODTJCTION
Thls
,addendum
Pertains
to
the
followlng
type
oscllloscopes'
Type
7 57*
Tvoes 765,765M,765H,
tiies
766,
?66t!rt
766H.
r|!ee
76?,
767t4,767H,
?65HF,
765MH,
165$H/P
766Hr.,
7661,tH,
766MH,/r
767H8,
767vrlt,
7671,E/F
B.
PURPOSE
The followlng
change
was mada
to
enable
use
of
the
tyP€.?{-14
i'i;"-;;;;
;rir:1;
in
ttre
standard
frame
when
oPeratlns
ln
the
fast
aLngle
sweeP
mode.
d.
scHE!.{Arxc
REvrsroNs
Supplyn
Sheet
2
of 2
deleta
and tie
the
contaot
on
s210
Serorr
PF
7€,f
nTSre*i4o4--
rl
laool
PEoot
on
Schematlc
"cRT
Clrcult
and
Hv
+sov reference
from
swltch
S210
to
connector
irSOOI,
Pln
20.
+.lov
t
o ,L1- +
{oV
I
Pr6aI
6704 7701
sheet I of
1
ECN 32,
358
FAIRGHIl-EI
IN
STRU
M
ENT,ATI
N
Ilol{
e orvrstoi
of
fAlRcxlto
cAxEnA
ato
lnsriuxlllT
coiPoir
Page 47
ADDENDUM
FOR
OSCIIJLOSCOPE
TYPES SPECIFIED
(Reference
Manual
Part
No.
supplenent
Part
No. 670t1
IN
INTRODUCTION
6704
5893
andl
4633r)
A.
INTRODUCTION
Thl,s
addendum
Pertalns
to
the
following
Type
OscllloEcoPes.:
Type 757'
riies
765,
765vr,
765H,
765Hr, 7651trt,
765tqfl/E'
Tlies
766, 766t.
766H.
766HF,
769MH,
766vtH/P'
rlrles
?57,
767M,
767H,
767H8,
76?NIII. 767NH/8.
PURPOSE
Th6 follovrlng
change
wds made
to retrove
osclllatlon
frotn the
nf
suppty
ocEuring-at
-30'c
(r22'F).
PARSS
I,IST
REVISIONS
fn
Sectlon
6A
change
c2005
s
c2012 to
th6
Srnnbol
Part Nunber
DescrlPtion
C2OO5
0326
7880
Plastl'c
r
0.22
rtf
,
tl0t, 2O0V
A!'11(
C2OL2
0326 7840
PlastLcr
0.047 uf,tlot,
200V
AllX
D. SCHEMAIIC
NEVISIONS
on schematls
'cRT
CIRCUIT
s
Hv
stPPLyr,
sheet
2 of
2 change
t
B.
c.
followlng.
Code
Type c296A8
c296A8
C2005
from I
uf
to 0.22
uf
c20L2 from
0.02
uf, to 0.047
uf
FAIFiAGHII-EI
INSTRUMENTATIO
N
Irot{
16704
80?1
ECN 32,{21
Sheet
1 of
A OrVrSrOn
Ot
allicxrLo cAlEfiA
Allo
lNsrSuollll
conPoSl
Page 48
ADDENDUM
FOR
OSCILIOSCOPE
TYPES
SPECIFIED
(Reference
Manual
Part
No.
Supplement
Part
No. 6704
IN
INTRODUCTION
6704
5893
and
4633r)
A. INTRODUCTION
Thla
addendr.un
PertaLna
to
the
followlng
type
oecllloacopea
t
Rf
supply
regulatLon.
Code
!r4
c20
c20
fype
757r
riires Ze
S,
?65!t,
765H,
?65Hr',
76!MH,
791v1,,/t
r-viee 266,
7661'r,
766H,
766ttP,
766YIH'
766N11/P
ri'iea
267, 767M,
767H,
757Hv,
767vfti,
767YIH/t'
B.
c.
PURPOSE
The follot
lng
change
waa mada
to lmprove
PARTS
LIST
REVISIONS
CEANGET
svfibol
Part
Number
DescrLptlon
R2005
0234
8360
Flxed
flln
{.3x
fOr
0234
8310
Ftxecl
flln
2.7x
SCHEMATIC
REVISIONS
cGll
cGI{
D.
On Schematlc
{CttT
CIRCUIT
t
HV SUPPLy',
Sheet
2
of 2,
change
r
R2006 from
4.3r
to
2.7K.
FAlFIGHll-E'
Y%%%m
INSTRUMENTATIO
A Orvrstoll ot
tAlncHrLo clrtiA
AN0
lNsllutltxr cotPolA
16704
s181
PCN
32,454
Sheet I of
I
N
ttot{
MI
clrtiA
Page 49
ADDENDUIt.
roR
oscllloecoPe
TYP€E
SPeclfled
(Referente uanual
Part
No.
SupPlement
Part
No.
570{
ln
Introductlon
670{
5893
and
4633r)
A.
ITTRODUCIIOIT
ahie
addendurn
Pertalna
Type
757'
fYpee
765,
765ltt,
TyPes
766r
766Mr
Typaa
76?1
767M,
to
the
followlng
oecllloscopo
tyPe'
t
765II,
765Hr,
76sMH,
765vlH/E
766H;
766HF,
766MIl,
?66tt[J./t
767H,
767trF
,
767ytr
'
767lCtl/l
.
B.
c.
PURPOSE
Thc
tollowlng
change
wae
made
to
correct
voltagG
adJuetnant
tolerance.
TEXT
REVISIONS
In
Sectlon
5,
paragraph
5-8,
change
voltage
tol€ranc'
for
each
regulated
auPPlY
aa
followe
t
SuppIv
-50v
+50v +100v +200v
from
$0
nv
+20
nv
+20 nv
+30 mv
To
iI00
nv
+100
mv
+150 nv +250
nv
FAlFIGHll-EI
INSTRUMENT,ATIO
N
trolr
6704
8201
Sh€et
l ol
ECN
32
,,055
l orvrsrolt of,Arncxrto
c^ alA
lllo lxslnur.trli
colFolA
Page 50
TI{STRUCTION
SHEET
FOR
TYPE
7062 CP.T
TER!,II}IATION
NETi\IORK
,IYPE
7062 OUTLTIIE
A.
Introduction
B. Peaking
AdJustments
C. Type 7062
InstaLlatlon
D. Ground Sprlng
Installation
E. Parts List
I l Ius
trations
Els.
Title
l.
fnstallation Instructlons
2. fnstallation fnstructions
3.
Type
7062 Termlnation
Network
4. Test Setup
for
Peakj.ng
AdJustment
5.
Front
Viev, of CRT Termination
Board
Showing Replaceable
Parts
6. Rear View of CRT Termination
Board
Showing Replaceable
Parts
7,
Type
7062 Schematic
8.
Ground
Sprlng
fnstallatlon
Dwg
A. INSTALL,ATION INSTRUCTIONS
(I'lgures
L,
2,
anal
3)
The
Fairchl).d Type 7062
CRT TermlnatLon
Network
ls
provlded
to
update
the Type
766H
Series
MaLn
Frame Oscilloscope
ln order
to
accommodate the Type
79-02A 100
Mc Dual Amplifier.
This
network is
"standard
equipment"
rrLth
the Hlgh-Frequency
Main
firame Oscilloscopes
(Types
765H/8,
765MH/F, 766H/8,
766t!fr1/8,
767H/F, anit
767MII,/F). If the Type
79-02A ls acqulred
at a later
date and
the Type
7651I
Series
Oscilloscope
has not been
modified,
then
the lnstallation
of the Type
7062
CRT Termination
Network
is
mandalory.
However, this
installatlon
$1111
not affect
the
operation
of any
other Pairchild
amplifler
plug-ins.
fn
some
caEes,
lhe HF
peaklng
tri"mmer
C0253,
may
requlre s1lght
readjust-
ment.
See lrigures
I and
2 for lnstallatlon
InstructLons
and Flgure
3
for
the Interconnect,ing
Diagram.
INSTRUMENT,ATION
6704 5584
Sheet
1of 13
ECN
32
,330
A
OIVISION
Of
FAIRCI]ILD
CAUTNA ANO
INSTqUMENT CORPOR IION
Page 51
16701
5884
Sheet 2
of
13
B. PEAKING
ADiTUSTI',IENTS
(c2053
and R2065) Flgures
4
thru 6.
1.
Hook up
Test
Equipment
aa lndicated In
Figure l.
.2.
Tack the free
end of,
the twin lead to the lnput of the
Type
7062
lermlnatlon.
Notet
If a
guick
dlsconnect
connectlon Ls made,
do
not
use
alllgator clLps. or oth€r bulky
devlces
that
lriIl lntroduco
a Large capa-
cltlve or
lnductlve lump. A small
Jack
auch
as a tube
socket termlnal
or arnphenol
connector
would be
guitable.
3.
Dleplay
the top
half of a I Mc
algnal from the
Type
7911A.
4. Set R2065
Lf PEAKING
ADiI to mid-range. A
termlnatlon
burnp
should appear
approxlmately 25
nanoseconda
fron
the
start of,
the
pul8e.
5.
AdJuEt HF
peaklng
trlmmor
C2053 to
produce
a
posltlve
burnp
2 rnm ln amplltude.
6.
Rernove
Type
?9-02A
Dual Trac6 Plug-ln,
the
Type
{29{
Extenslon Cab1e,
and diEconnect
th€ long twln lead.
7,
Install the
Typa
?062
wlth
lta noruul
3-3/1r
length
ol
twl,n Lead.
8. Install a Type 76-08 or
other
lower freguency ampllfler
plug-ln
ln
the Y cavlty.
9.
Set fyp€
79IA
Square
wave
Generator
for 10 Kc.
10.
AdJust
LF PEAI(INC ADJ R2065
f,or flat'top.
Page 52
6704
5884
Sheet
3
of
13
C.
T'!PE
7062 TERMINATION
INSTALLATTON
AsEemb1e
the Iype 7062 Terminatlon
Network
following
the steps
outllned
Ln Figures
I
thru 3. The
schematic for the Type
7062
Ls shown
ln Flguro
7.
D.
GROITND
SpRING
fNSTAIJLATION
(Flgure
8)
Bhe fol,lowlng
lnstallation
pertalns
to older unlts.
New
pro-
ductlon
wlll
lncorporate
the
groundlng
aprlngs.
l.
To
lnEtall
the
grounding
sprlngs
follow the steps
as
out-
Ilneil.
.The
parts
requlred are
llsted
in
paragrlph
E
of the
PartE
lJlst.
2. Remove
the osci,lloscopeE
lef,t
slde
cover and
the
plug-ln
f,rom the
left
"Yt
cavlty.
(Noter
on
Rack
Mountei
u6de1g
renove
th6 top and bottom
covers.,
3. Locate
and
dlrlll
four 0.096
lnch dlameter
holee Ln
th6 chassl,s
interface
surface to whloh
the
plug-ln
rnatcr6.
See
Flgure 8
to datermlna
hols locatlong.
4. 6€t.
groundlng
sprlngs
ln
place,
per
drawlng,
and
secutro
each
aprlag
l!
ptace
using
two
l{
lock iraEherc
indt
two 4-40
X L/4
Ln.
long
eelf
tapplng screlra.
Page 53
6704
5884
Sheet
4
of
Unsold€r
and
retEve
t D€fl€ctlon
Plate
lelald
anal
trLotler
Disconnect
X t Y
Plate
leads
fro6l
CRT
Install
the lyp€
70
52
Netrork
to Y Defl€ctlon
Plate
neck
plnr
-
capacitor
froa
plng
b
I
"r.a
17 of
Jgobl
leads
to
plnc
I and
17 of
J9001
FIGUF'
1.
INSTA.LL.\?
ION
INSTRUCTIO:iS
Page 54
6704
s884
Sheet 5
of
13
trnrt ll clanp
tt.
Itt.
7062
la
poal
Iref,lectlon
.
and fagten
N€trcrk
ReconheAt x
PlatG
le.dt through
a6 shorrtt
PIGURE
A.
INSTAILATION INSTRUCTIONS
Page 55
13
1670{
5884
Sheet
? oi
,(
''to
I
t,
E A )r
E{
!{
.n
d
to
H
l.{
H
E
.o
4J
d
e
tt tr
o
F.
N
lo
o
o
o
F
E
H H
v,
D
B
a
l,
2
H
u
fi
A
il
I
B
H
E
o
t
tn
H
gr
&t
l,
o
H
!.
all
o d.6
o orl
o
etooa
d6
!
ur
ot,{
i,
Fa F{
C
u a
!,t,
E a da
C +t.d
ai
O
O
.,{
loQ
.ra
t4r6
ra
0t
Nou
A ft)F.ata
O O\
'rt
at.'{O{t,
x
ll-oo
o
ta{
H
.,{.n
o a'
o
tt
rno
A$.-OF
tr ov rl
'{
( o
ot 'tdo
f, rl
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oc
T.a
.r{
t
lnk
t
o
VI
a,
-r
tl
\c
Cl
.rl
!ni
l{ o
8r
4
FtO
Fao
dt
.r'l
Fd
d&,
oo
'rd
E{ F{
o
A
(t
o
E
a
?
c,
u!
fr
o
H
*
9l
4A
Atd
aru
!a
!{>
Ad
>lB
C.l
!I
B
4
D
o
ul
Page 56
1670{
5881
Sheet
I
of
13
.E.
PARTS
LIS!
(Flgurea
5 andl 6)
Symbol
Part
Nunber
De6crlptlon
C2O5l
& C2052
0319 5010
Capacltorl
fl'xedl
cgratnLc,
13
Pf,
+1S,
5o0V
0319
1253
Capacitor,
varlable,
0.65-3.2
Pf,
350v
0319
1050 CapacLtor,
flxed,
cerarnlc,
0.02
uf,
+60
-{0lr
150V
c2053
czos{
r c2os6
o31e
2420
""il!.i?l,tftT.3;ofl.roertlonr
c2057
c2058
& C2059
0319
2480 CaPacltor,
flxedr
cornpoel'tlon;
2.7
Pft
+5t,
500V
CR2O5I
to CR2056
2600 8670
Dioder
1N3062
L2O5I r
L2052
210L 9411
Collr
tetmlnationr
9 turna,
127
wlre
L2053 &
r.2o5l
21Ol
9451
Co1lr
lnductancep
rl
turnc,
I
'
f27
wlre
02050
e
02051
2600 8410
rranaj.stor,
DU
t28A
2600 8390
alternate
tranal,ator,
2N3013
SESIEEoRs.
Note! ALl rEBlstors
are
flxed, fllm,
+5t,
and
L/zw,
Values
ara ln ohme
unlesE other-
wlee
speclfledl
K - thougandr
M
-
mllllon.
R2051
0237 5680
20.5K,
+lt,
1,/8W
R20s2 s R2053
0234 8340 3.6K
R2054 R2055
0237
5680 20.5K,
+It,
1,/8W
0235 6330 compoalElon,
lM,
+lot,
L/4w
R2056 0237
4420
33.2K,
+Lt,
L/4W
R2057 to R2059 0237 6420
3OO, 2!{-
R20 51 0237
6420 300, 2w
R2062
r R2063 0234 7900 5I
R206
{
R2065
R2055
0234 86L0
{7K
0109
3580
varlable,
composltlon, 10X,
O.lW
(PEAI(
AA')
0235 6330 composltlon,
lM,
+I01,
I/4W
Page 57
PARTS
Syrnbol
rf2051
:
16704
s88l
theet
9
of
5
and
6)
concluded..
300-ohrn
cable
tetmlnatl,on
6"
124
gtranded
wlrc
(blackl
7' t24
atranded
wlre
(orange)
A'
121
etranded
wlre
(bluc)
13
E.
LIST
(Flgures
Part
Nunber
CABI/E
e
5028
906r.
5028
6900
5028
6930
5028
6960
WIREg
CI,AMP
ASSEMBI,Y
conslatlng
of,r
oty
2
Qty
I
Qty
{
310L
3242
6009
6180
5200
3670
6210
0030
clamp
Ecrer,
l{SBIlr 6-32
x 1,/2
waaherr llat,
16
wagherr
lock,
16
GROUND
SPRING9I ASSEMBDY
3005
88sl
6042
0800
6220 0010
Sprlng,
gsound
Screw, selt
tapptnE, l-4O x L/4
waaher,
lock
lnternal tooth
14
\-,
Page 58
6704 5884
Sheet
10 of
13-.
o
Er
4
q.
E]
tf
o
4
r.l
(J
d
rt t{
(,
2
B
o
qt
(:
d
4
o
o
4
z
t-t
E
t{
€.
E{
&
(,
h
o
=
r,1
H
E{
z
o
& &
EI
i>
o
;a
ol
6al
ol
.ct,o
c,o
B!,
8'E
i
c
,.
o
a,
a
t
c
o
a,
o o
,..
o
o
I
Page 59
6704
s884
sheet U
of 13
R2057
R2059
, cR2055
c2053
EF PEA.E
ADJ
iR2os8
iR2o61
t
CRilos6t lR2053r
i\.
R2052
R2055
lnzoez
lnzoer
R2064
c2037
FIGURE
6.
RE.AR
VIET{ OF
CRll
IERIqII{AgIO}I BOARD SHOWING REPI,ACEABI..E
PARTS
Page 60
*6704
s884
Sheet
12
of
13
:)
J
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r,l
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H8
oo
rt
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3
to
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or
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Page 61
6704
5884
Sheet
13 of
13
o
t
o
z
o
t{
H
( lt
6
E{
Ul
z
H
u
a
l.{
& A
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U'
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x
D
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o
HC'
oo oo
6N
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ro
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oo
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Page 62
SUPPLEI,TENT
.TO
THE TYPE 756H
SERIES
OSCILLOSCOPE
MANUAI'
INSTRUCTIONS
ON
767,
MOD.
115
6,
FOR
usrNc
THE
TYPE
757,765
e
116
SERIES
OSCIIJLOSCOPE
A.
INTRODUCTION
The followlng
Instructlon
Manual
and
supplement
is^app11::!1:
ior
ttre
Type
757,
765
&
?67,
MoD I15
e
116
Serles
osclrroscopeg
;;;";l-"h;;o
ocherwlse
noted.
I"loD 115
incorporates
a
50-60
cPs
iin
ina
MoD
116
incorporateE
a
50-400
cps
fan'
Manual
RequLred
?66H
Serles
oscllloscoPe
766II
Supplement
ThIs
supplement
cbters
informatlon
not
llsted
in
the.
above
*u"tf"nl-a
manuaL
and
should
be used
J.n
conJunctlon
with
the
parent
manual.
Eyp6
?66H
Serles
Manual
Revlslons
I.
Electrlcal
PartE
LIst
Add
the
follow1ng
comPonents,
thelr
descrlptlonr
code
and
typo
aE
speclfied
hereln.
Recorunelqeq_Ieggsr
Part Number
For Use
Wlth
6704
5893
765
e
757,
MOD
115
e
116
5704 4633
?57,
MOD 1r5
E 116
B.
Symbol
uou
1ar
rrr
\sr
(Bt
MoD
J
g1sg2
115
I s1
\cr
Part Number
8100
5810
0503
2560
8100
5830
0326
8110
0s03
2560
0316
4930
Des
crlption
fan,
50-60 cps
thermos
tati c
fanl
50-400
cps
plastic,
0.47
uf,
+10t,400v
thermostatic t
capacitor,
ceramLc,
0.0I
uf,
2KV
-----Eode
EIPe
RTN
EMW
147
2400-s5-2
BC2206rr-2
c2 9
6AC
2400-56-2
2KV
IMC
AMX
EMW
FAEr
ffit*tr!E-ffi3
INSTRUMENT,ATION
6704 7L92
sheet
1of
2
ECN 32,469
a otvrslofi
of
lArRcslLo cAMERI
Al,lo lllsiFuMtxl
coAPoRAlloN
Page 63
Part
1670{
7192
6heet 2
of 2
ECN
32,469
2.
Schematlc
RevLsiong
On LV
Regulat€d
PoYr€r
supply'
SchetnatLc
foUorlng
coruPonents
for ttre
epeclflc
Ehown
on attached
schematlc
sketch.
add
the
MOD ag
cr
O.47pf
c2
O.a7p
roor
T
B LK.
RED
3.
MOD il5
T.xt
Revl8lons
In the Tcchnl,cal
add the
followlng
GRN
SI
THERMAL
CU
TOUT
MOD I
16
under
Envl.romental
Speclflcati'ona
and Lnformatlon.
gumary
headlng
VEI{TII.,AlION
A cooling fari
actuatcd
by a thermostat
le
lncorporatcd
to mal.ntaln
prop€r
equlprent operatlnq
temPeraturc.
Thc
thenpstat oloaea
to actuatc the f,an
when
the
ten-
perature
exceedE
80'f
+5'P
and
opens to turn
the fan
OFI
when the temporatur.
diope below 51tP
+5'f
a. Schematlc
Revlslon
([OD
116
only)
On Bchematlc
'CRf
Circult and
HV Supply'
eheet 2 of 2r
add
capacitor C3, 0.01 uf, from
v204
pln
1
(CRT)
to
ground.
WHT
FAN
B1
50-60
^/
s1
THERMAL
CUTOUT
BLK.
WHT
FAN
BI
50.400,\'
IVH T
ELX- WHT
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