Tektronix 2235 User manual
2235
OSCILLOSCOPE
SERVICE
INSTRUCTION
MANUAL
W
A
RN
I
N
G
7
e
Ictro
ηά
THE
F
O
LL
O
W
I
NG S
ERV
ICI
N
G
I
N
ST
RU
CTIONS
A
RE
F
O
R US
E
BY
Q
UA
L
I
F
I
ED
PER
SO
NNEL
ONL
Y
.
T
O A
V
OID
PER
SO
N
A
L
I
NJUR
Y,
DO NOT
PER-
F
ORM
ANY
SERV
ICI
N
GOTHERTHAN
THAT
CO
N
-
TAI
NE
D
IN
OPER
ATI
N
G
I
NST
RU
CTIONS
UNLE
SS
YO
U
A
RE
QU
A
L
I
F
I
ED
TO
DO
SO
.
REFER
TO
OP-
ERATORS
SA
FE
TY
S
UMM
A
RY A
N
D S
ERV
IC
E
SA
FE
TY
S
UMM
A
RY PR
IO
R
TO
PERF
O
RM
I
N
G
ANY
SERV
IC
E
.
Te
k
tro
n
ix
N
atio
n
al
M
ar
k
eting
Ce
n
ter
for
P
ro
d
uct
Or
d
er
Information,
call
1-800-426-2200
ext
41
In
O
r
ego
n
call
collect
(503)627-9000
ext
41
Te
k
t
r
on
ix
N
atio
n
al
M
a
rk
eti
ng
Ce
n
te
r
P
.O
.
Box
500 D/S
Υ
6-088,
B
eaverto
n
,
O
R
97077
PLE
AS
E
C
HE
C
K
F
O
R
C
H
A
N
G
E
I
NF
O
RM
ATIO
N
AT
THE
RE
A
R
O
F
T
H
IS
M
A
NU
A
L
.
2235
OSCILLOSCOPE
S
ERV
IC
E
I
N
ST
RU
CTIO
N
M
A
NU
A
L
Te
k
tronix,
Inc
.
Ρ
.
Ο
.
Box
500
B
eaverto
n
,
Oregon
97077
Serial
N
umber
CO
MM
ITT
E
D
TO
E
XC
ELLEN
C
E
070-4206-00
F
irst
P
rinting
D
E
C
1982
Pr
o
d
uct
Gro
up
46
R
evised
MAY
1983
Copy
r
ig
h
t
ύ
1982
Te
k tro n
ix,
I
n
c
.
All rig
h ts
rese
r
ved
.
Co
n
tents
of
t
h
is
publicatio n
may
not
b
e re pr
oduce
d
in
any
form
wit
h
out
t
h
e
w
r
itten
pe
r
missio
n of
Te
k
tronix,
Inc
.
Prod
u
cts
of
Te
k
tronix,
I
nc
.
and
its
sub
sidia
r
ies
are
cove
r
ed
by
U
.S
.
and
foreign
p
atents
and
/or
pen
ding
p
ate
n
ts
.
T
EK
T
R
O
N
IX,
ΤΕΚ
,
SCO
PE-M
O
B
I
LE,
a
n
d
Ta
are
registered
t
r
ad
emar
k s of
Tek
t
r
o
n
ix,
I
n c
.
T
ELE
Q
U
I
PMEN
T
is
α
registered
tra
d
emar
k of
Te
k tro n
ix
U
.
K
.
L
imited
.
Printe
d
i
n
U
.S
.A
.
S
p
ecificatio
n and
p
rice
c h
ange
p
rivileges
are
reserved
.
I
NST
RUMEN
T
S
ER
IA
L
NUMBER
S
Each
i
n
strume
n
t
h
as
α
se
r
ial
n
um
b er
on αpa
n
el
i
n
sert,
tag,
or
stam
ped on
t
h
e ch
assis
.
T
h
e
fi
r
st n u
m
b
er
o
r
letter
desig
n
ates
t
h
e
country
of
ma
n
ufact
ur
e
.
T
h
e
last five
d
igits
of
t
h
e se
r ial
n
um
be
r
are
assigne
d se
qu
entially
a
nd a
r
e
u
n
i
que
to
eac
h
i
n
str
u
me
n
t
.
T
hose
ma
nu
fact
ur
ed
i
n
t
h e
United
States
have
six
un
i
que d
igits
.
The coun
try
of
ma
nu
facture
is
i
den
tifie
d as
follows
:
ΒΟΟΟΟΟΟ
Te
k
t
r
o
n
ix,
I
n c
.,
B
eaverto
n
,
O
r
ego
n
,
USA
100000
Te
k
tronix
G
u
e
rn
sey,
L
t
d
.,
C
han
nel
islands
200000
Te
k
t
r
onix
Un
ite
d K
i
n
gdom,
L
td
.,
Lo
n
don
300000
Sony/Te
k
t r
o
n
ix,
J
apa
n
700000
Te
k
t
r
o
n
ix
Holla
nd
,
NV,
Hee
r
envee
n
,
T
h
e Neth
erla
nd
s
TA
BLE
OF
CO
N
T
EN
TS
2235
Service
LIST
OF
ILLUSTRATIONS
.
...................
iii
SECTION
3
THEORYOF
OPERATION
LIST
OF
TABLES
. .
.
....
.
...................
iii
INTRODUCTION
........
.....
...
3-1
OPERATORS
SAFETY
SUMMARY
.............
ί
ν
GENERAL
DESCRIPTION
........
3-2
SERVICING
SAFETY
SUMMARY
............
...
ν
DETAILEDCIRCUIT
DESCRIPTION
3-3
VERTICAL
ATTENUATORS
.....
3-3
SECTION
1
SPECIFICATION
In
p
ut
Coupling
....
.........
3-3
INTRODUCTION
................
1-1
B
uffer
Amplifier
and
Gain
ACCESSORIES
..............
...
1-1
Switching
Network
..........
3-4
PERFORMANCE
CONDITIONS
....
1-1
Paraphase
Amplifier
........
.
3-4
VERTICAL
PREAMPLIFIERS
. . .
3-5
SECTION2
OPERATING
INSTRUCTIONS
CHANNEL
SWITCH
A
ND
PREPARATION
FOR
USE
....
....
2-1
VERTICAL
OUTPUT
........
.
.
3-5
SAFETY
...............
.
....
2-1
Delay
L
ine
Driver
.........
.
.
3-6
L
INE
VOLTAGE
.........
.
....
2-1
V
ertical
Output
Amplifier
...
. .
3-6
POWER
CORD
........
.
. .....
2-1
Α
/
Β
Sweep
Separation
Circuit
.
3-7
L
INE
FUSE
.........
....
.....
2-1
TRIGGER
AMPLIFIERS
AND
INSTRUMENT
COOLING
.......
2-2
SWITCHING
.........
.
.......
3-7
CONTROLS,
CONNECTORS,
AND
Internal
Trigger
.....
.
.......
3-7
INDICATORS
...
.....
...........
2-2
Internal
Trigger
Amplifier
.....
3-8
POWER,
DISPLAY,
AND
PROBE
Α
External
Trigger
Am
p
lifier
...
3-8
ADJUST
...
.
................
2-2
L
ine
Trigger
Amplifier
........
3-8
VERTICAL
.
.
....
.
...........
2-3
Α
TRIGGER
GENERATOR
......
3-9
HORIZONTAL
................
2-4
Α
Trigger Level
Circuit
.......
3-9
TRIGGER
...................
2-6
Α
Trigger
L
evel
Comparator
. .
3-9
REAR
PANEL
................
2-7
Α
Schmitt
Trigger
and
TV
OPERATING
CONSIDERATIONS
...
2-8
Trigger
Circuit
.............
3-9
GRATICULE
..............
...
2-8
Α
SWEEP
GENERATOR
AND
GROUNDING
.............
...
2-8
L
OGIC
... .................. .
3-9
SIGNAL
CONNECTIONS
...
.
...
2-8
Α
M
iller
Sweep
Generator
...
.
3-10
INPUT
COUPLINGCAPACITOR
Α
Sweep
L
ogic
.........
. .
.
3-11
PRECHARGING
..........
.
...
2-8
ALTERNATE
Β
SWEEP
......
.
.
3-11
OPERATOR'S
ADJUSTMENTS
.
...
2-9
Β
M
iller
Sweep
Generator
...
.
3-12
INTRODUCTION
......
...
....
2-9
Β
Trigger
L
evel
Comparator
.
.
3-12
TRACE
ROTATION
...
....
.....
2-9
Runs
After
Delay
.....
.....
.
3-12
PROBE
COMPENSATION
. .
....
2-9
Β
Delay
Time
Position
OSCILLOSCOPE
DISPLAYS
......
2-10
Comparator
........
.
......
3-12
INTRODUCTION
.... .........
2-10
Β
Swee
p
L
ogic
. .
...
.......
3-12
B
ASELINE
TRACE
.. ..........
2-10
Alternate
Dis
p
lay
Switching
SIGNAL
DISPLAY
. .
..........
2-11
L
ogic
........
.
...........
3-13
M
AGNIFIED-SWEEP
DISPLAY
. .
2-11
ΒΖ
-Axis
L
ogic
.
.....
.......
3-13
DELAYED-SWEEP
DISPLAY
....
2-11
HORIZONTAL
...
.
............
3-13
DELAYED-SWEEP
Horizontal
Pream
p
lifier
.......
3-14
MEASUREMENTS
............
2-11
Χ
-
Υ
Amplifier
.
.
.
.
.
.
........
3-14
SINGLE-SWEEP
DISPLAY
......
2-12
Horizontal
Output
Amplifier
...
3-15
Χ
-
Υ
DISPLAY
............... .
2-12
Z-AXIS
AMPLIFIER
...........
3-15
TV
SIGNAL
DISPLAYS
....... .
2-12
Dc
Restorer
...............
3-16
2235
Service
Page
Page
SECTION
3
THEORYOF
OPERATION
(cont)
SECTION
6
M
AINTENANCE
(cont)
POWER
SUPPLY
AND
PROBE
I
NTRODUCTION
...........
. .
6-2
ADJUST
.............
.....
. .
3-17
GENERAL
CARE
...........
.
.
6-2
Power
Input
........
.....
. .
3-17
INSPECTION
AND
CLEANING
.
.
6-2
Preregulator
........
.....
. .
3-17
LUBRICATION
............
.
. .
6-4
Inverter
............
.....
. .
3-18
SEMICONDUCTOR
CHECKS
. .
.
6-4
Crt
Supply
.........
.....
. .
3-18
PERIODIC
READJUSTMENT
.
. .
6-4
Focus
Circuit
.......
.....
. .
3-18
TROUBLESHOOTING
.........
. .
.
6-5
L
ow-Voltage
Supplies
.....
. .
3-19
INTRODUCTION
...........
. .
6-5
Probe
Adjust
......
.
.
.
.
. .
. .
3-19
TROUBLESHOOTING
AIDS
.
. .
.
6-5
TROUBLESHOOTING
EQUIPMENT
.............
...
6-6
SECTION
4
PERFORMANCE
CHECK
TROUBLESHOOTING
PROCEDURE
TECHNIQUES
............
.
. .
6-6
INTRODUCTION
..........
.....
.
4-1
CORRECTIVE
MAINTENANCE
.
. .
.
6-10
PURPOSE
.............
...
. .
4-1
INTRODUCTION
..........
...
6-10
STRUCTURE
..........
.....
.
4-1
M
AINTENANCE
PRECAUTIONS
.
6-10
TEST
EQUIPMENT
.....
.....
.
4-1
OBTAINING
REPLACEMENT
L
IMITS
AND
TOLERANCES
...
.
4-1
PARTS
. .
.
.
..............
. .
.
6-10
PREPARATION
FOR
CHECKS
.
.
4-2
M
AINTENANCE
AIDS
......
...
6-10
INTRODUCTION
Τ
0
I
NTERCONNECTIONS
......
. .
.
6-10
PERFORMANCE
CHECK
STEPS
4-3
TRANSISTORS
AND
VERTICAL
............
.
.....
4-4
INTEGRATED
CIRCUITS
... ....
6-11
HORIZONTAL
..........
....
.
.
4-8
SOLDERING
TECHNIQUES
....
6-12
TRIGGER
.............
.....
.
4-12
REMOVAL
A
ND
REPLACEMENT
EXTERNAL
Z-AXIS
AND
PROBE
I
NSTRUCTIONS
.........
.
....
6-13
ADJUST
..............
....
.
.
4-15
Cabinet
..............
.
....
6-13
Cathode-Ray
Tube
...... ....
6-13
SECTION5
ADJUSTMENT
PROCEDURE
Power-Supply
Shield
...
.
....
6-14
INTRODUCTION
................
5-1
F
ilter
Circuit
B
oard
. .
....
....
6-14
PURPOSE
..................
5-1
Alt
Sweep
Circuit
B
oard
.
....
6-15
STRUCTURE
................
5-1
Attenuator
Circuit
B
oard
.
....
6-15
TEST
EQUIPMENT
...........
5-1
Timing
Circuit
B
oard
...
.
....
6-16
L
IMITS
AND
TOLERANCES
....
5-1
B
ottom
Shield,
Attenuator
a
nd
ADJUSTMENT
INTERACTION
. .
5-1
Timing
Circuit-Board
M
odule
. .
6-17
PREPARATION
FOR
Front-Panel
Circuit
B
oard
....
6-17
ADJUSTMENT
...............
5-1
M
ain
Circuit
B
oard
.
. .
.......
6-18
INDEX
TOADJUSTMENT
REPACKAGING
F
OR
SHIPMENT
6-20
PROCEDURE
STEPS
.........
5-3
SELECTABLE
COMPONENTS
. .
6-20
POWER
SUPPLY
AND
CRT
DISPLAY
5-4
VERTICAL
.
....................
5-6
SECTION
7
OPTIONS
H
ORIZONTAL
..................
5-14
TRIGGER
.
....................
5-20
SECTION8
REPLACEABLE
ELECTRICAL
PARTS
EXTERNAL
Z-AXIS
AND
PROBE
SECTION
9
DIAGRAMS
ADJUST
. .
.
...................
5-24
SECTION
10
REPLACEABLE
MECHANICALPARTS
SECTION
6
M
AINTENANCE
Accessories
STATIC-SENSITIVE
COMPONENTS
6-1
PREVENTIVE
MAINTENANCE
.....
6-2
CHANGE
INFORMATION
ιι
TA
BLE
O
F
CO
N
T
EN
TS
(cont)
L
IST
O
F
I
LLU
ST
R
ATIO
N
S
F
ig
ur
e
P
age
F
igu
r
e
P
age
T
he
2235
Oscillosco
p
e
.........
.....
. .
vi
2-7
R
ear-
p
anel
con
n
ector
.
.............
.
. .
2-7
1-1
M
aximum
inp
u
t
voltage
vs
.
fre
q
ue
n
cy
2-8
Gratic
u
le
meas
u
reme
n
t
mar
k
i
ngs
...... ..
2-8
de
r
ating
curve
for
C
H
1
OR
Χ
,
C
H2
O
RΥ
,
2-9
P
ro
be
com
p
en
satio
n
.
............. .
.
. .
2-10
and
ΕΧ
7
I
NPU
T
conn
ecto
r
s
..... ..
...
. .
1-7
3-1
B
loc
k
d
iagram
of
t
he
Ve
r
tical
Atte
n
uators
.
3-4
2-1
V
oltage,
p
ower
cord,
an
d
fuse
data
....
. .
2-1
3-2
B
loc
k
diagram
of
t
he
C
h
annel
Switch
ing
2-2
F
use
h
ol
d
er
and
p
ower
co
r
d connector
.
. .
2-2
circ
u
itry
.......
.
............
.....
...
3-6
2-3
P
ower,
dis
p
lay,
and
probe
a
dju
st
con
trols
3-3
B
loc
k diagram
of
t
he
Α
Sweep
Generator
conn
ector
and
in
d
icator
...
. .
.
.
.
.
.......
2-3
and
L
ogic
Circuitry
...........
.
.......
3-10
2-4
V
ertical
controls
an
d
co
nn
ecto
r s
.
........
2-4
3-4
B
loc
k
diagram
of
t
he
H
orizontal
Am
p
lifier
.
3-14
2-5
H
orizontal
controls
......
.....
........
2-5
3-5
Sim
p
lified
diagram
of
t
he
Dc
R
estorer
2-6
Trigger
controls,
connector,
and
indicator
.
2-6
circuitry
......
.
............. ........
3-16
6-1
M
ulti-co
nn
ector
h
older
o
r
ientatio
n
.......
6-6
L
IST
O
FTA
BLE
S
2235
Service
Ta
b
le
P
age
Ta
b
le
P
age
1-1
E
lectrical
C
h
aracte
r
istics
. .
.....
........
1-2
5-4
Attenuator
Compensatio
n
Ad
ju
stme
n
ts
...
5-9
1-2
E
nvironmental
C
h
aracteristics
...
.
.......
1-8
5-5
Settings
for
Bandwid
t
h
C
heck
s
.........
5-12
1-3
Ph
ysical
C
h
aracte
r
istics
. .
.....
........
1-9
5-6
Settings
fo
r
Timing
Accuracy
C
hecks
.....
5-17
4-1
Test
E
q
ui
p
ment
R
e
q
uired
......
.
.......
4-2
5-7
Setti
ngs
for
Delay
Time
Acc
u
racy
C
hec
k
s
.
5-18
4-2
Deflectio
n
Acc
u
racy
L
imits
.....
.
.......
4-4
5-8
Switch
Combinations
for
Α
Triggering
4-3
Setti
ngs
for
B
a
nd
wi
d
t
h
C
heck
s
.
........
4-6
C
h
ec
ks
.
.
.............
.
.
.
.
.
.........
5-21
4-4
Setti
ngs
for
Timi
ng
Acc
u
racy
C
hecks
.....
4-9
6-1
R
elative
S
u
sce
p
tibility
to
Static-Disc
ha
r
ge
4-5
Setti
ngs
for
Delay
Time
Acc
ur
acy
C
hec
k
s
.
4-10
Damage
.
.................. .........
6-1
4-6
Switch
Com
b
i
n
atio
ns
fo
r
Α
T
r
igge
r
i
n
g
6-2
E
xternal
Ins
p
ection
C
heck
list
. .
.........
6-3
C
heck
s
................
.....
........
4-12
6-3
Inte
r
nal
Inspection
C
heck
list
...
.........
6-3
5-1
Ad
j
ustme
n
t
I
n
teractio
n
s
. .
.....
........
5-2
6-4
P
ower
Supply L
imits
and
R
ip
p
le
.........
6-8
5-2
P
ower
Supp
ly
L
imits
.....
.....
........
5-4
6-5
M
ai
n
te
n
ance
Aids
......
.....
.........
6-11
5-3
Deflection
Accuracy
L
imits
.....
........
5-8
6-6
Trigge
r
B
an
d
wi
d
t
h
Alteration
. .
.
........
6-20
2235
Service
Te
r
ms
as
M
ar
k
ed
on
E
q
u
i
p
me
n
t
Symbols
in
T
h
is
Manual
O
PER
ATO
R
S
SA
FE
TY
S
UMM
A
R
Y
Th
e gener
al
safety
information
in
t
h
is
p
art
of t
h
e s
u
mmary
is
for
bot
h
operating
an
d
se
r
vicing
perso
n
nel
.
Specific
warnings
and
cautio
n
s
will
be
fo
u
nd
t
h
roug
h
o
u
t t
h
e
man
u
al
w
here
t
hey apply an
d
d
o
not
appea
r
i
n
t
h
is
su
mmary
.
Terms
i
n
T
h
is
Manual
Groun
d
ing
t
h
eP
ro
d
uct
CA
U
TIO
N
stateme
n
ts
i
d
en
tify
con
d
itio
n
s
or p
ractices
T
h
is
produ
ct
is
gro
un
d
e
d
t
hr
ough
t
he g
r
oun
d
ing
co
nd
uctor
t
h
at
coul
d
res
u
lt
in
d
amage
to
t
he
e
qu
i
p
me
n
t
or
othe
r
of
t
he
p
ower
cor
d
.
To
avoid
elect
r
ical
s
hock
,
pl
u
g t
h
e
pr
op
erty
.
p
owe
r
cor
d
into
α
pr
operly
wi
r
e
d
rece
p
ta
b
le
b
efore
con-
necting
to
t
he
p
r
oduct
i
npu
t
o
r
outpu
t
termi
n
als
.
Α
W
A
RN
I
NG
state
m
en
ts
i
d
entify
cond
itio
n
s
or pr
actices
p
rotective
grou
nd
co
nn
ection
b
y
way
of
t
he
gro
und
ing
t
h
at
coul
d
r
es
u
lt
i
n
personal
injury
o
r
loss
of
life
.
co
ndu
ctor
i
n
t
he
power
cord
is
esse
n
tial
fo
r
safe
o
p
eratio
n
.
CA
U
TIO
N
i
nd
icates
α
p
erso
n
al
injury
h
aza
rd
n
ot
imme-
d
iately
accessi
b
le
as
o
ne
r
ea
d
st
he
ma
rk
i
n
gs,
o
r
α
h
azar
d
to
pr
o
p
erty,
incl
ud
i
ng
t h
e equ
i
pm
en
t
itself
.
DA
N
G
ER
in
d
icates
α
p
ersonal
i
nju
ry
h
aza
rd
imme
d
iately
accessi
b
le
as
o
n
e
rea
d
s t
he
ma
rk
i
ng
.
T
h
is
symbol
in
d
icates
w
h
e r
eapp
lica
b
le
cautio
n
ary
o
r
ot
h
er
info
r
mation
is
to be
fo
u
nd
.
F
o
r
maxim
u
m
inp
u
t
voltage
see
Ta
b
le
1-1
.
Symbols
as
M
ar
k
e
d
on
Equ
i
p
me
n
t
114
DA
N
G
ER
-
H
ig
h
voltage
.
Ο
P
rotective
g r
oun
d
(eart
h
)
termi
n
al
.
Danger
A
r
isi
ng
Fr
om
L
oss
of
Groun
d
Up
on
loss
of
t
he
protective-g
r
oundconn
ectio
n
,
all
acces-
si
b
le
co
ndu
ctive
parts
(incl
ud
i
ng knob
s a
nd
con
t r
ols
t h
at
m
ay
a
pp
ea
r
to be
i
n
s
u
lati
n
g)
can
r
end
er
an
electric
s
hock
.
Use t
he
Pr
o
p
er
P
ower
Co
r
d
U
se
only
t
he
power
cor
d
and
co
nn
ector
s
p
ecifie
d
fo
r
your
p
ro
du
ct
.
U
se
only
α
power
cor
d
t
h
at
is
i
n
goo
d co
nd
itio
n
.
F
o
r
detaile
d
i
nformation on
power
cor
d
s
an
d
conn
ectors
see
F
ig
ur
e
2-1
.
Use t
he
P
ro
p
er
F
use
To
avoi
d
fire
h
aza
rd
,
use
only
α
f
u
se
of
t
he
correct
ty
p
e,
voltage
rating
a
nd cu
r
rent
rating
as
specifie
d
in
the
parts
list
for
yo
ur
p
r
odu
ct
.
ΑΤΤΕΝΤΙΟΝ
-
R
efe
r
to
ma
n
ual
.
To
avoi
d exp
losion,
d
o
n
ot
o
p
erate
t
h
is
produ
ct
i
n
an
exp
losive
atmosp
h
ere
un
less
it
h
as
b
een
s
p
ecifically
cer-
P
ower
Source
tifie
d
for
s
uch
o
p
e
r
atio
n
.
Do
N
ot
O
p
erate
in
E
xp
losive
Atmos
ph
eres
T
h
is
pro
d
u
ct
is
inten
d
e
d
to
operate
from
α
power
so urce
t
h
at
does
n
ot
apply
more
t
han
250
volts
rms
betwee
n
t
h
e
s
u
pply
con
d
uctors
o
r
b
etween
eit
h
er
s
up
ply
cond
u
ctor
and
Do
N
ot
R
emove
Covers
Or
P
anels
gro
un
d
.
Α
protective
groundcon
nectio
n
by
way
of
t
he
To
avoi
d p
erso
n
al
i
nj
ury,
d
o
n
ot
remove
t
he
pr
odu
ct
gro
u
n
d
i
ng co
n
d
u
ctor
i
n
t
he
powe
r
cord
is
essential
for
safe
covers
or
p
a
n
els
.
Do
not
o
p
e
r
ate
t
he
p
ro
du
ct
withou
t t h
e
operation
.
covers
and
pan
els
properly
i
n
stalle
d
.
S
ERV
ICI
N
G
SA
FE
TY
S
UMM
A
R
Y
F
ORQU
A
L
I
F
I
E
D
S
ERV
IC
E
PER
SO
NNEL
O
NL
Y
R
efer
also
to
t
he
prece
d
ing
Operato
r
s
Safety
S
u
mmary
.
Do
N
ot
Service
Alo
n
e
Disco
n
nect
power
b
efore
removing
protective
pa
n
els,
sol-
Do
not
p
erform
internal
se
r
vice
or
ad
j
ustme
n
t
of
t
h
is
p
r
od-
deri
n
g,
or
re
p
lacing
com
p
o
n
ents
.
uct unless
a
n
ot
h
e
r
personcapable
of
r
ende
r
i
n
g
first
aid
a
nd
resuscitatio
n
is
prese
n
t
.
P
owe
r
So
ur
ce
2235
Service
Th
is
product
is
inte
n
de
d
to
ope
r
ate
from
α
power
source
U
se
Ca
r
eWh
e
nServicin
g
W
it
h
P
owe
r
On
t
h
at
does
not
apply
mo
r
e
t
h
a
n
250
volts
r
ms
between
t
h
e
supp
ly
co
nd
ucto
r
s
or
between
eit
h
e
r
supply
co
n
ductor
a
n
d
Dangerous
voltages
exist
at
seve
r
al
points
i
n
t
h
is
p
roduct
.
grou
n
d
.
Α
p
rotective
groun
d
co
nnectio
n b
y
way
of
t
he
To
avoi
dpe
r
so
n
al
i
nj
ury,
d
o
not
touc
h
exposed
conn
ectio
n
s
gro
u
n
d
i
n
g
con
n
ecto
r
in
t
h
e
power
cor
d
is
essential
fo
r
safe
or
com
p
o
n
ents
w
h
ile
power
is
on
.
ope
r
ation
.
2235
Service
Th
e
2235
Oscillosco
p
e
ατο
6-
ο
1
The
instr
u
me
n
t
is
sh
i
pp
e
d
wit
h
t
h
e
following
sta
nd
a
rd
accessories
:
S
PE
CI
F
ICATIO
N
Sectio
n1-2235
Service
I
NTR
OD
U
CTIO
N
PERF
O
RM
A
N
C
E
CO
N
DITIO
NS
T
h
e
T
EK
TR
O
N
IX
2235
oscillosco
pe
is
α
rugge
d
,
lig
h
t-
T
he
following
electrical
c
ha
r
acte
r
istics
(Ta
b
le
1-1)
a
r
e
ναΙ
-
weigh
t,
d
ual-c
h
annel,
100-
MH
z
i
n
strument
t
h
at
feat
u
res
α
id
for
t
he
2235
w
hen
it
h
as b
een
a
dju
sted
at
an
am
b
ient
b
rig
h
t,
sh
arply
defined
t
r
ace
on an
80-
by
100-mm
cat
h
ode-
tem
p
erat
u
re
b
etween
+20°C
and
+30°C,
h
as
h
ad
α
warm-
ray
tu
be
(crt)
.
Its
vertical
system
p
r
ovi
d
es
calibrated
deflec-
up
period of at
least
20
minutes,
and
is
o
p
e
r
ati
ng
at
an
tion
facto
r
s
f r
om
2
m
V
p
er
divisio
n
to
5
V p
er
division
.
am
b
ie
n
t
temperature
between
0°C
and
+50°C
(u
n
less
ot
h
Trigger
circuits
enab
le
stable
triggering
over
t
he
full
band-
erwise
noted)
.
widt
h
of
t
he
vertical
system
.
T
he
h
o
r
izo
n
tal
system
provi
d
es
cali
b
rated
swee
p
s
p
eeds
from 0
.5
s perd
ivisio
n
to
50
n
s
per
division
along
wit
h
delaye
d
-sweep
features
for
acc
u
rate
relative-time
meas
u
rements
.
Α
Χ
10
magnifie
r
extends
t
he
Items
listed
in
t
h
e
"
P
erformance
R
e
qu
ireme
n
ts" col
u
m
n
maxim
u
m
swee
p
s
peed
to
5
ns pe
r
d
ivision
.
are
verifia
b
le
qualitative
or
quantitative
limits,
w
h
ile
items
listed
i
n
t
h
e
"S
upp
lemental
I
n
formatio
n
"
col
u
m
n are
eit
h
er
explanatory
notes,
cali
b
ration
setup
descriptions,
p
erfor
ACC
E
SSO
R
I
ES
mance
ch
aracteristics
for
w
h
ic
h no
absolute
limits
are s
p
eci-
fied,
or
ch
aracteristics
t
h
at
are
impractical
to
c
h
eck
.
1
O
p
erators
Manual
2
Pr
o
b
e
pac
kages
E
nvironmental
ch
aracteristics
are
give
n
i
n
Ta
b
le
1-2
.
The
1
Service
Manual
2235
meets
t h
e
re
qu
ireme
n
ts
of
MIL-T-288000,
p
aragra
ph
s
4
.5 .5
.1
.3,
4
.5 .5
.1
.4,
and
4
.5
.5
.1
.2
.2
for
Type
III,
Class
5
F
or part
nu
m
be
r
s
a
nd
f
u
rt
he
r
i
n
fo
r
mation about both
e
q
uipment,
except
w
h
ere
ot
h
erwise
noted
.
sta
n
dard
and
o
p
tional
accessories,
refer
to
t
h
e
"Options
and
Accessories"
section
(Section
5)
of
t
h
is
man
u
al
.
Your
Tek
tronix
re
p
resentative,
local
Tek
tronix
F
iel
d
Office,
or
Tek
tronix
prod
u
ct
catalog
can
also
p
rovi
de
accessories
Ph
ysical
c
h
aracteristics
of
t
h
e
i
n
st
ru
me
n
t
are
liste
d
i
n
Τα
-
information
.
b
le
1-3
.
Sp
ecification-2235
Service
Deflection
F
acto
r
R
ange
Accuracy
+15°C
to
+35°C
0°C
to
+50°C
Step
R
es
p
onse
R
ise
Time
Aberratio
ns
Ch
a
r
acteristics
2
m
V
p
er
Division
2
m
V
per
Divisio
n
P
ositive-Going
Ste
p
2
m
Vp
er
Division
to
0
.5
V
per
Division
1
V
pe
r
Division
to
5Vp
er
Division
Band
widt
h
(-3
dB
)
0°C
to
+35°C
5
m
V
per
Division
to
5
V
per
Division
2
m
V
per
Divisio
n
+35°C
to
+50°C
5
m
V
pe
r
Division
to
5
V
per
Division
.
2
m
V
p
er
Division
AC
Co
u
pled
L
ower
L
imit
VER
TICA
L
DEFLE
CTIO
N
SYST
EM
2
m
V
p
er
divisio
n
to
5Vp
er
d
ivisio
n
i
nα
1-2-5
se
q
uence
+2%
.
±3
ο
/
ο
.
α
R
ange
of
V
O
L
TS/DI
VV
aria
b
le
Cont
r
ol
Continuously
varia
b
le
b
etween
settings
. I
ncreases d
eflection
factor
by
at
least
2
.5
to
1
.
0°C
to
+35°C
5
mV
p
er
Division
to
5
V
per
3
.5
n
s
or
less
.'
Division
3
.9
ns
or
less
.a
+35°C
to
+50°C
5
m
V
p
er
Division
to
5
V
per
3
.9
n
s
or
less
.'
Division
4
.4
ns or
less
.a
+4
ο/ο
,
-4%,4%
ρ
-
ρ
.
+12%,
-12
ο
/
ο
,
12
ο
/
ο
ρ
-
ρ
.
α
Dc
to at
least
100
MH
z
.
Dc
to
at
least
90
MH
z
.
Dc
to at
least
90
MHz
.'
Dc
to at
least
80
MHz
.'
10
H
z
or
less
at
-3
dB
.a
'
P
erfo
r
ma
n
ce
R
equ
i
r
eme
n
t
not
checked
in
Service
Manual
.
Ta
b
le
1-1
E
lectrical
C
ha
r
acte
r
istics
P
erfo
r
mance
R
e
qu
i r
eme
n
ts
S
upp
lemental
I
n
fo
r
matio
n
5
mV
p
er
d
ivision
to
5V
p
er
division
gain
is
a
dju
ste
d
wit
h
V
O
L
TS/DI
V
switc
h
set
to
10
m
V
p
er
d
ivision
.
2
m
V
p
er
d
ivisio
n
gain
is
a
dju
sted
wit
h
V
O
L
TS/DI
V
switc
h
set
to
2
m
V
p
er
d
ivisio
n
R
ise
time
is
calc
u
lated
from
t
h
e
fo
r
mula
:
0
.35
Band
widt
h
(-3
dB
)
M
easured
wit
h
5-
d
ivisio
n
r
eference
signal,
centere
d
vertically,
f
r
om
α
50
Ω
source
d
riving
α50
Ω
coaxial
cable
terminated
in
50
Ω
at
t
he
in
p
ut
co
nn
ecto
r
wit
h
t
he
V
O
L
TS/DI
V
V
ariable
con
trol
i
n
t
he
CA
L d
etent
.
M
easu
r
ed
wit
hα
vertically
centered
6-
d
ivision
refere
n
ce
signal
from α50
Ω
so
ur
ce
driving
α
50
Ω
coaxial
cab
le
t
h
at
is
terminated
in
50
Ω
,
b
ot
h
at
t
h
e
i
npu
t
connecto
r
and
at
t
he
pr
obe
in
p
ut,
wit
h
t
he
VO
LTS/DI
VV
aria
b
le
control
i
n
t
h
e
CA
L
detent
.
Bandwidth
L
imiter
C
h
o
p
M
ode
Switch
ing
R
ate
In
p
ut
C
h
aracteristics
R
esistance
Capacitance
DC
Coupled
AC
Co
up
led
C
h
aracte
r
istics
Common-
M
ode
Re
j
ection
R
atio
(C
MRR)
Input
Current
Trace
S
h
ift
wit
h
Atten
u
ator
R
otation
Trace
S
h
ift
as
V
O
L
TS/DI
V
V
aria
b
le
Control
is
R
otated
Trace
S
h
ift
wit
h
Invert
C
h
annel
Isolation
POSITIO
N
Control
R
an
ge
Table
1-1
(co
n
t)
Perfo
r
mance
R
e
qu
i
r
em
e
n
ts
S
u
p
pleme
n
tal
I
n
fo
r
matio
n
VER
TICA
LD
EFLECTIO
N
SYST
EM
Uppe
r
limits
(-3
dB)
b
a
ndp
ass
at
20
MHz
±
10%
.
500
kH
z
±30%
.
α
1
ΜΩ
±2%
.
α
20
p
F
±2
ρ
F
.
α
M
axim
u
m
Safe
I
np
ut
V
oltage
Α
~
See
F
ig
u
re
1-1
fo
r
de
r
ating
cu
rve
.
400
V
(
d
c
+
pea
k
ac)
Or
800
V
ac ρ
-
ρ
to
10
kH
z
or
less
.
α
400
V
(
d
c
+
peak
ac)
Or
800
V
ac ρ
-
ρ
to
10
kH
z
or
less
.
α
At
least
20
to
1
at
50
MH
z
.
1
.0
ηΑ
Or
less
(0
.5
division
trace
sh
ift
at
2
m
V
per
division)
.
α
0
.75
divisio
n
or
less
.
α
1
.0
division
or
less
.
α
1
.5
division
or
less
.
α
8
P
erfo
rman
ce
R
equ
i
r
e
m
e
n
t
not
chec
k
ed
i
n
Service
Manual
.
Greater
t
han
100
to
1
at
50
MH
z
.
At
least
±
11
d
ivisio
n from
graticule
cen
ter
.
S
p
ecificatio
n
-2235
Service
C
h
ec
ked
at
10
m
V
per
divisio
n
for
commo
n
-mode
sig
n
als
of
6
divisio
ns o
r
less
wit
h
V
O
L
TS/DI
VV
ariable
co
n
trol
a
dj
usted
for
best
C
MRR
at
50
kH
z
.
V
O
L
TS/DI
VVa
r
iable
con
trol
i
n
CA
L
d
etent
.
S
p
ecificatio
n
-2235
Service
Α
T
R
IGG
ER
Sensitivity
Ρ
-
ΡAU
TO
and
NORM
/T
V
L
I
NE
M
odes
I
n
ter
n
al
Exter
n
al
TV
F
I
EL
D
M
od
e
ΕΧΤ
ΙΝΡ
UΤ
I
np
ut
R
esistance
Characteristics
L
owest
Useable
Fre
quency
i
n
Ρ
-
Ρ
A
U
TO
Mo
de
Β
TR
IGG
ER
Se
n
sitivity
(I
n
ter
n
al
Only)
M
aximum
I
np
ut
V
oltage
2L
400
V
(
dc
+
pea
k
ac)
or
800
V
ac
;
ρ
-
ρ
at
10
kH
z
o
r
less
(see
F
ig
ur
e
1-1)
.
α
I
np
ut
Ca
p
acita
nce
AC
Coupled
LEVEL
Control
Range
ΑTR
IGG
ER
(N
O
RM)
ΙΝΤ
ΕΧΤ
,
DC
ΕΧΤ
,
DC
-
10
Β
T
R
IGG
ER
I
n
ternal
VA
R
H
O
L
DO
FF
Cont
r
ol
Trigger
V
iew
System
Deflectio
n
F
actor
I
n
ter
n
al
Exte
rn
al
AC
and
DC
Accu
r
acy
DC
-
10
Delay
Differe
nce B
etween
ΕΧΤ
I
NPU
T
an
d E
it
he
r
V
ertical
C
h
annel
P
erfo
rm
a
n
ce
R
e
qu
i
r
eme
n
ts
S
upp
leme
n
tal
I
n
fo
r
matio
n
1
0
MHz
60
MH
z
100
MH
z
0
.3
div
1
.0
div
1
.5
d
iv
35
m
V
Ι
120
m
V
200
m
V
20
Hz
wit
h
1
.0
d
ivision
i
n
ter
n
al
or
100
m
V
exter
n
al
.a
1
.0
divisio
n
of
com
p
osite
sync
.a
10
MHzL60MHz
_L100
MHz
0
.3
d
iv
1
.0
d
iv
1
.5
div
1
ΜΩ
±
2%
.
α
20
pF
±2
.5
p
F
.a
°
P
erfo
r
ma
nce
R
equ
i
r
eme
n
t
n
ot
c
h
ec
k
e
d
in
Service
Manual
.
Ta
b
le
1-1
(con
t)
TR
IGG
ER
SYST
EM
10
Hz
or
less
at
lower
-3
d
B
p
oint
.a
Can
b
e
set
to
any
poi
n
t
of
t
h
e
tr
ace
t
h
at
can
be
d
is
p
laye
d
.a
At
least
±
1
.6
V,
3
.2
V
ρ
-
p
.
At
least
±
16 V, 32
V
ρ
-
ρ
.
α
Ca
n be
set
to
any
poi
n
t
of
t
he
trace
t
h
at
can
b
e
displayed
.
α
Inc
r
eases
Α
Swee
p h
oldoff
time
by
at
least
α
factor
of
10
.
α
Same
as
vertical
.
100
m
V
pe
r
divisio
n
.
1
V
per
divisio
n
.
±20%
.
L
ess
t
h
an2
.0
n
s
.a
E
xter
n
al
trigger
sig
n
al
from
α
50
Ω
sou
r
ce
drivi
n
g
α50
Ω
coaxial
cab
le
te
r
mi
n
ated
i
n
50
Ω
at
t
he
i
npu
t
conn
ecto
r
.
Sweep
Rate
Cali
b
rate
d Ra
n
ge
Α
Swee
p
Acc
u
racy
+15'C
to
+35°C
P
OSITIO
N
Cont
r
ol
R
ange
Swee
p
L
i
n
earity
V
ariable
Control
R
ange
Swee
p
L
en
gt
h
Α
/
Β
S
WP
SEP
R
ange
Delay
Time
Dial
Co
n
trol
Ran
ge
J
itter
Β
Swee
p
C
ha
r
acte
r
istics
0°C
to
+50°C
Differe
n
tial
Time
M
easu
reme
n
t
Accuracy
+15'C
to
+35'C
0°C
to
+50°C
H
O
RIZO
NTA
L
D
EFLECTIO
N
SYST
EM
0
.5
s
p
er
division
to
0
.05
As
p
er
division
in
α
1-2-5
se
q
uence
.
Χ
10
mag
n
ifier
extends
maximum
swee
p
s
p
eed
to
5 ns
p
er
divisio
n
.
50
ms
p
er
d
ivisio
n
to
0
.05
As
p
er
division
i
n
α
1-2-5
seq
u
ence
.
X10
magnifier
exte
nds
maximum
sweep
s
p
eed
to
5ns per
divisio
n
.
Un
magnifie
d
M
agnified
Start
of
swee
p
to
10t
h
division
will
p
osition
p
ast
t
h
e
center
vertical
g
r
atic
u
le
li
n
e
i
n
Χ
1
or
100t
h
division
in
X1 0
.
±5%
.
'
P
erfo
rmance
R
equ
ire
m
en
t
n
ot
ch
ec
k
ed
in
Service
Manual
.
Ta
b
le
1-1
(co
n
t)
P
erfo
rma
n
ce
R
eq
u
i r
eme
n
ts
S
upp
le
m
en
tal
Info
r
matio
n
Continuously
varia
b
le
b
etween
cali
br
ated
settings
.
E
xten
d
s
t
he
Α
and
Β
sweep
speeds
by
at
least
α
facto
r
of
2
.5
.
Greater
t
h
a
n
10
division
.
±3
.5
d
ivisio
ns
or
greater
.
Applies
to
0
.5
As pe
r
d
ivisio
n
and
slowe
r
.
<0
.5
+300
ns
to
>10
divisions
.
One
part
or
less
i
n 20,000
(0
.005%)
of
t
he
maximum
availa
b
le
d
elay time
.
±
1ο
/ο
+0
.015
ma
j
or
dial
division
±2
ο
/ο
+0
.015
ma
j
or
dial
division
.'
S
p
ecificatio
n
-2235
Service
Sweep
accu
r
acy
applies
over
t
h
e
cente
r
8
d
ivisio
ns
.
E
xclude
t
h
e
first
25
n
s
of
t
he
swee
p
for
magnified
swee
p
s
p
eeds
and
anyt
h
ing
b
eyon
d
t
he
100th
magnified
division
.
L
i
n
earity
meas
u
re
d
over
any
2
of
t
he
cen
ter
8
d
ivisio
ns
.
W
it
h
magnifier
i
n
Χ
10,
exclude
t
h
e
first
25 ns
and
anyt
h
i
ng
past
t
h
e
100t
h
divisio
n
.
Delay
time
is
functional
b
ut
not
cali
b
rated
at
swee
p
setti
n
gs ab
ove
0
.5
As
pe
r
d
ivision
.
E
xclu
de d
elaye
do
p
eration
w
hen
Α
and
Β
SE
C/DI
V
knobs a
r
e
loc
ke
d
toget
h
er at
an
y
swee
p
sp
ee
d
or
w
hen
Α
SE
C/DI
V
switc
h
is
at
0
.5
As
p
er
division
or
faster
.
Accuracy
applies
over
t
h
eΒ
DE
LAY
TIME
P
OSITIO
N
con
tr
ol ra
n
ge
.
Specificatio
n
-2235
Service
Deflection
Factors
Acc
u
racy
Χ
-Axis
+15°C
to
+35°C
0°C
to
+50°C
Υ
-Axis
B
a
nd
widt
h
(-3
d
B
)
Χ
-Axis
Υ
-Axis
Ph
ase
Differe
n
ce
B
etwee
n
Χ
-
a
nd
Υ
-Axis
Am
p
lifiers
Output
V
oltage
of
PR
O
BE
AD
JU
ST
J
ack
R
e
p
etition
R
ate
Se
n
sitivity
C
ha
r
acte
r
istics
M
aximum
Safe
I
npu
t
V
oltage
I
npu
t
R
esista
nce
10
k
Ω
±
10
ο
/ο
.
α
L
ine
Voltage
R
anges
L
ine
Fre
quen
cy
M
aximu
m
Power
Co
n
sum
p
tion
L
ine
Fuse
Dis
p
lay
Area
Standard
Ph
os
ph
or
Nominal
Accelerati
n
gV
oltage
°
P
erfo
rmance
R
equ
ireme
n
t
not
ch
ec
ked
i
n
Service
Manual
.
Ta
b
le
1-1 (con
t)
Perfo
r
ma
n
ce
Re
qu
i
r
e
m
e
n
ts
S
upp
leme
n
tal
I
n
fo
r
matio
n
Χ
-
Υ
O
PER
ATIO
N
(
Χ
1
M
AG
N
I
F
ICATIO
N
)
Same
as
V
ertical
Deflection
System
(wit
h
V
O
LTS/DI
VV
a
r
ia
b
le
con
trols
i
n
CA
L
dete
n
t)
.
±3%
.
±4
ο/
ο
.
α
Same
as
V
ertical
Deflection
System
.a
Dc
to at
least
3
MHz
.
Same
as
V
ertical
Deflection
System
.a
±3
ο
f
r
om
d
o
to
150
kH
z
.a
0
.5
V
±5
ο/
ο
.
1
kH
z
±20
ο
/ο
.
α
5V
ca
u
ses
n
oticeable
modulation
.
Positive-goi
ng
i
np
ut
decreases
i
n
tensity
.
30
V
(dc
+
p
ea
k
ac)
o
r
30
V
Cρ
-
ρ
ac
at
1
k
Hz
or
less
.a
90
V
to
250
ν
.
α
48Hz
to
440
Hz
.a
40
W
(70
νΑ
)
.
α
PO
WER
SO
UR
C
E
1
.0
Α
,
250
V,
slow-
blow
.
80
by
100
mm
.a
Ρ
31
.
α
14
kV
.a
PR
O
BE
AD
JU
ST
Z-AXIS
INPU
T
CAT
H
OD
E
-
R
AY
T
UBE
M
easured
wit
h
α
dc-cou
p
led,
5-divisio
n
reference
signal
.
M
eas
ur
ed
wit
h
α
5-divisio
n
r
efere
nce
sig
n
al
.
With
dc-cou
p
led inp
u
ts
.
Usea
b
le
f
r
e
q
uency
r
an
ge
is
do
to
20
MHz
.
V
O
L
TS
(DC
PLU
S
PEAK
AC)l
400
300
200
100
50
20
10
Sp
ecification-2235
Service
)2 .5 ν
l
10 KHz
50 KH
z
100
ΚΗτ
500 ΚΗτ
1
MH
z
100 MHz
FRE
Q
UEN
CY
4207-28
F
igu
r
e
1-1
.
M
axim
um
inpu
t
voltage vs
.
fr
e
qu
en
cy
d
e
r
ati
ng cu
rve
fo
r
C
H
1
O
RΧ
,
CH
2
O
R
Υ
,
a
nd
ΕΧΤ
I
NPU
T
conn
ecto
r
s
.
S
p
ecificatio
n
-2235
Service
Tem
p
erat
u
re
O
p
erati
ng
Altitude
O
p
erating
Hu
midity
(O
p
erati
ng and N
o
n
op
erati
n
g)
V
i
b
ration
(O
p
erating)
S
hock
(Operating
an
d
Non
op
erati
n
g)
EMI
N
o
n
o
p
erati
ng
N
ono
pe
r
ating
C
ha
r
acte
r
istics
Ta
b
le
1-2
En
vi
r
on
me
n
tal
C
ha
r
acte
r
istics
Th
e
instrument
meets
t
he
r
equir
eme
n
ts
of
MIL-T-288000,
p
a
r
ag
rap
hs4
.5
.5
.1
.3,
4
.5
.5
.1
.4,
and
4
.5 .5
.1
.2
.2
for
Ty
p
e
ΙΙ
/,
Class
5
equ
ipme
n
t,
exce
p
t
w
here
ot
he
r-
wise
noted
.
0°C
to
+50°C
(+32
0
F
to
+122°
F
)
.
Descri
p
tio
n
ΝΟΤΕ
-55°C
to
+75°C
(-67°
F
to
+167°
F
)
.
Tested
to
ΜΙ
L
-
Τ
-288000
p
aragra
phs
4
.5
.5
.1
.3
and
4
.5
.5
.1
.4,
except
i
n 4
.5
.5
.1
.3
steps 4
and
5
(0°C
operating
test)
are
p
erformed
a
h
ead
of
ste
p 2
(-55°C
nono
p
erating
test)
.
E
qu
i
p
ment
s
h
all
remain
off
upon
retur
n
to
room
am
b
ient
during
ste
p
6
.
E
xcessive
co
nd
ensatio
n
s
h
all
be
remove
d b
efore
op
erating
du
ri
ng
ste
p 7
.
To 4,500
m
(15,000
ft)
.
M
aximum
o
p
e
r
ati
n
g
tempe
r
ature
dec
r
eased
1
°C
p
er
1,000
ft
a
b
ove
5,000
ft
.
Το 15,000
m
(50,000
ft)
.
5
cycles
(120
h
o
u
rs)
refere
nced
to
ΜΙ
L-
Τ
-288000
p
aragra
ph 4
.5
.5 .1 .2 .2
for
Type
III,
Class
5
i
n
strume
n
ts
.
O
p
erati
ng and
non-operating
at
95%
+0%
to
-5%
r
elative
h
umid
ity
.
O
p
erati
n
g
at
+50°C
a
nd
+30°C
.
Non-operating
at
+30°C
to
+60°C
.
15 minutes
along
each
of
3
ma
j
or
axes
at
α
total
displacementof
0
.015
inc
h
ρ
-
ρ
(2 .4
g's
at
55 Hz)
wit
h
fre
q
uency
varied
from 10
Hz
to
55
H
z
to
10
Hz
in
1-minute
sweeps
.
H
old
for
10 minutes
at
55 Hz
i
n
eac
h
of
t
h
e3
ma
j
o
r
axes
.
All
ma
j
o
r
r
esonances
must
b
eab
ove
55
H
z
.
30
g's,
h
alf-si
n
e,
11-ms
du
ration,
3 sh
oc
ks
p
er
axis
eac
h d
irection,
for
α
total
of
18 shocks
.
M
eets
ra
d
iated
and
con
du
cte
d
emissio
n
re
qu
irements
per
V
DE
0871 Class
Β
.
Weight
With
Power
Cord
With
Cover, Probes,
and
Pouch
Without
Cover, Probes,
and
Pouch
Domestic
Shipping
Weight
Height
With
Feet
and
Handles
Width
With
Handle
Without
Handle
Depth
With
Front
Cover
Characteristics
Without
Front
Cover
With
Handle
Extended
Table
1-3
Physical
Characteristics
Specification-2235
Service
Description
7
.1
kg
(15
.7
lb)
.
6
.1
kg (13
.5
lb)
.
8
.2
kg (18
.0
lb)
.
137
mm
(5 .4
in)
.
360
mm
(14
.2
in)
.
327
mm
(12
.9
in)
.
445
mm
(17
.5
in)
.
440
mm
(17
.3
in)
.
511
mm
(20
.
1
in)
.
O
PER
ATI
N
G
I
N
STR
U
CT
I
O
N
S
SA
FE
TY
R
efer to
the
"Operators
Safety
Summary"
at
the
front
of
this
manual
for
p
owe
r
source,
grounding,
and
other
safety
consi
d
erations
p
ertaining
to
the
use
of
the
2235
.
B
efore
connecting
the
instrument
to
α
p
ower
source,
carefully
rea
d
t
he
following
information
about
line
voltage,
power
cor
d
,
an
d
fuse
.
L
I
NE
V
O
L
TAG
E
T
his
instrument
is
capable
of
continuous
op
eration
with
input
voltages
that
range
from 90
V
to
250
V
nominal
at
frequencies
from 48
Hz
to
440
Hz
.
P
O
WER
CO
R
D
Α
detac
hab
le
t
h
ree-wi
r
e
p
ower
cor
d
wit
h
α
th
ree-co
n
tact
p
l
u
g
is
provided
with
each
i
nstru
m
ent
to
permit
connection
to
both
t
he p
ower
source
an
d
protective
groun
d
.
The
pro-
tective-groun
d
contact
in
the
plug
connects
(through
t
he
protective-ground
con
d
uctor)
to
the
accessible
metal
p
arts
of
the
instrument
.
For
electrical-shoc
k
protection,
insert
this
plug only
into
α
p
ower-source
outlet
that
has
α
properly
groun
d
ed p
rotective-groun
d
contact
.
PREP
A
R
ATIO
N
F
O
RUS
E
P
lug
L
ine
R
e
f
erence
Optio
n
Configuration
U
sage
Voltage
Stan
d
ar
ds
N
um
b
er
N
ort
h
ANSI
C73
.11
American
120V
ΝΕΜΑ
5-15-
Ρ
Stan
d
ar
d
120
Α
/
Ι
Ι
I
E
C
83
Universal
E
uro
240
V
/
10-16
Α
UK
240V/
13
Α
N
ort
h
American
240
V
/
15
Α
terclockwise
to
r
elease
it
.
240
V
240V
Section
2-2235
Ser
vice
C
EE
(7},II,I
V
.
V
II
I
E
C
133
Θ
5
1363
I
EC
83
Α
1
Α
2
Austra
ι
ian
240
Α
/
240
ν
AS
C112
Α
3
10
Α
ANSI
ς
73
.2
ρ
240
V
ΝΕΜΑ
6-15-
Ρ
Α
4
I
E
C
83
Switzerlan
d
220
Υ
/
2201
SEV
Α
5
6Α
Abb
reviations
:
ANSI
-
American
N
atio
n
al
Stan
d
ar
ds
Institute
Α
5
-
Stan
d
ar
d
s
Association
of
Australia
Β5
-
B
ritis
h
Stan
d
ar
ds
Institution
ςΕΕ
-
International
Commission
on
R
ules
for
t
he
Approval
of
E
lectrical
Eq
ui
p
ment
I
E
C
-
Inter
n
ational
El
ectrotec
h
nical
Commission
ΝΕΜΑ
-
National
Electrical
Manufacturer's
Association
S
EV
-
Sc
h
weizevisc
h
er
E
ι
ek
trotec
h
isc
h
er
V
erei
ο
2931-21
Figure
2-1
.
V
oltage,
po
w
er
cord,
an
d
fuse
d
ata
.
Instruments
are
shippe
d
with
t
he
require
d
power
cordas
or
d
ere
d
b
y the
customer
.
Available
power-cord
information
is
presente
d
in
F
igure
2-1,
and
p
art
numbers
are
liste
d
on
1
.
Unplug
the
power
cord
f
rom
t
he
power-input
source
(it
the
"Accessories"
page
at
the
back
of this
manual-
Contact
applicable)
.
your
Tektronix
representative
or
local
Tektronix
Field
Office
for
a
d
ditional
power-cord
information
.
2
.
Press
in
and
slightly
rotate
the
fuse-hol
d
er
cap
coun-
L
I
NEFU
S
E
3
.
Pull
the
cap
(with
t
he
attached fuse
insi
d
e)
out
of
the
The
instrument
fuse
hol
d
er
is
located
on
the
rear
panel
fuse
holder
.
(see Figure
2-2)
and
contains
the
line
fuse
.
The
following
p
roce
d
ure
can
be
used
to
verify
that
the
p
roper
fuse
is in
stalle
d
or to
install
α
replacement
fuse
.
4
.
V
erify
proper
fuse
value
(see
F
igure
2-1)
.
O
p
e
rati
ng
I
n
str
u
ctions-2235
Service
CA
U
TIO
N
FOR
C
σΝΤιΝυεσ
FIRE
PRCTECTION
R
EPL
AC
E
ONL
Y
WIT
H
SPE
CI
F I
E D
TYPEAN
Ο
RATED
FUS
E
.
σ1SCO
NNE
CT
POW
E
R
INPUT
BEF
OR
E
ΑΣΡιΑςιΝ
G
FU
S E
L
IN
E
VO L
T
A
G
E R
AN
GE
FUSE 250V
9015
ΟΥΑ
[
ΙΑ
SLOW
DO
NOT
REM
OV
E
COV
E
R
.
R EFER
5
E
R
V
I[I
N G TO
COAL
I
F
I
ED
ΡΕΟ
S
ΟΝΝ
FL
.
POWER
ΜΑ
%WA
TTS
4σ
ΜΑΧ
VA
70
F
F
Ι1
45
-
440
Η
;
POWER
CORD
L
I
NE
FU
S
E
CAUTION
TO
AVOID
ELECTRIC
SHOCK
THE
POWER
CORO
PROTECTIVE
GROUNDING
CONDUC70
π
4111T
BE
CONNECTED
ι
t
ρυΝυ
.
ιαι L
AXIS
INPUT
ισχα Ρσ
s
ιτινε
GOING
ΙΝΡυΤ
O F
CAE
Α
S ES
'-'-
INTENSITY
5
VOLT
Ρ
-
Ρ
CAUSES
' 1
NOTIC
E
A
BLE
:
ΜΟσ
U
ΙΑΤΙΟΝ
ΑΤ
~ N OR
M
A
L
ΙΝΤΕΝ
5
ΓΤΥ
.
°
-310V
PEAK
4207-03
Figure
2-2
.
Fuse
hol
de
r
and
power co
rd
con
n
ecto
r .
5
.
R
einstall t
he
fuse
(o
r r
ep
lacement
fuse)
and
t
h
e
fuse-
h
olde
r
cap
.
I
N
ST
RUMEN
T
COO
L
I
N
G
Always
maintain
a
d
eq
u
ate
instr
u
ment
cooling
.
T
he ven
ti-
lation
holes
on
bot
h
side
of
t
he eq
ui
pm
e
n
t
cabinet
and
on
t
he
r
ea
r
pan
el
must
remai
n
f
r
ee
of
o
b
structions
.
CO
N
T
R
O
L
S,
CO
NNE
CTO
R
S,
A
N
D
I
N
DICATO
R
S
The
following
d
escri
p
tions
are
inten
d
ed
to
familiarize
t
he
4
Ο
FOCUS
Co
n
tr
ol-A
d
justs
far
optimum
d
isplay
op
erator
wit
h
t
h
e
location,
operation,
and
fu
n
ction
of
t
he
d
efi
n
itio
n
.
instr
ument's
controls,
connectors,
an
d
i
n
dicato
r
s
.
P
O
WER,
DIS
PL
AY,
A
ND
PR
O
BE
AD
JU
ST
Refer
to
Figu
r
e
2-3
fo
r
locatio
n
of
items
1
t
h
ro
u
g
h
8
.
Internal
Graticule-Eliminates
p
arallax
viewing
error
betwee
n
t
he
trace
and
gratic
u
le
lines
.
R
ise-time
am
p
li-
t
ude and
meas
u
re
m
ent
points
are
indicated
at
t
he
left
edge
of
t
he g
r
atic
u
le
.
POWER
Switch--Turns
instr
u
ment
power
on
and
off
.
Press
in
for
ON
;
press again
for
O
FF
.
Ο
Power
Indicator-An
LE
D
t
h
at
illuminates
w
hen
pow-
er
is
availa
b
le
to
t
he
instrument
a
nd
t
he
PO
W
ER
switc
h
is
set
to
ON
(
bu
tton
in)
.
2-2
PR
O
BE
AD
JU
ST
Con
n
ector-
P
rov
id
es an
approxi-
mately
0
.5
V,
negative-going,
square-wave
voltage
(at
a
p
proximately
1
kH
z)
that
pe
rm
its
an o
pe
r
ato
r
to
compensate
voltage
pr
obes
an
d
t
he check
operation
o
ft
he
oscilloscope
vertical
system
.
It is
not
i
ntended
to
ve
r
ify
t
he acc
u
racy of
t
h
e
vertical
gain
o
r
ti
m
e-base
circ
u
itry
.
BEAM
F
I
N
D
Switch
-
Wh
en h
eld
in,
co
mpr
esses
t
h
e
d
isplay
to
wit
h
in
t
he g
r
aticule
a
r
ea
an
d
provi
des α
visi-
b
le
viewing
i
n
te
n
sity
to
ai
d
in
locating
off-scree
n
dis
p
lays
.
TR
AC
E
ROTATION
Control-Screwdriver
a
d
ju
st-
me
n
t
use
d
to
align
t
h
e
crt
trace
wit
h
t
h
e
h
orizo
n
tal
g
r
aticule
lines
.
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