Tektronix 2235 User Manual

Ad ju stme
n
t
Pr
oce dur e-2235 Service
b . P osition t he C hann el 1 an d C h a nn el 2 tr
aces about
2
d ivisions apart using t he C hann el 1 a nd C h annel 2
POSI-
TION controls .
c . C HE C K -Sweeps alte r nate for all t h e Α
S
E
C/DI
V
switc h setti ngs .
υ . R ep eat p arts b t h roug h s for C hann el 2 .

12 . A d ju st H ig h - Fr e quency Com pen satio n (C237),
Delay Line Com pen satio n ( R 240 and R 241), and
C h
a
nn
el 2 H ig h - F re q ue n cy Com pen sation (C180)
ν . Discon n ect t he test eq ui p me n t from t h e instrument .
α . Set
:
10 . C h ec k Alte rn
atio
n
Operatio n
α . Set :
VER TICA L M OD E
BOTH an d A L T
AC-G
N D-DC
( b ot
h )

G ND
Α and Β
S
E
C/DI
V
50 ms
Α & Β ΙΝΤ

C
H
1
ΝΟΤΕ
At swee p sp eeds of 2 ms p er d ivision
o
r
faster,
t h
e
trace
alternations
occur too r a p idly to b eob serve d .
11 . C h ec k C h
op
O p
e
r
atio
n
VER TICA L M OD E

CH 1
BW L I M IT

Off (butto n o u t)
V
O L TS/DI V ( b ot h )

10 mV
AC-G N D-DC (bot h )

DC
Α
SE C/DI V 0 .05 μ s
Α
SOUR C E

ΙΝΤ
b . Connect t he p ositive-going fast-rise squa r e wave out-
p ut
via
α 50- Ω cable, α 10 Χ atte n uator, and α 50- Ω termina-
tion to t h
e C
H 1
O
R Χ i np
ut connector .
c . Set t he gen erator to p roduce α 1-MHz, 5-divisio n
dis p lay .
d . Set t h e to p of t he dis p lay to t h e cente r h orizo n tal grati-
cule line usi n g t h e C hann el 1 P OSITIO N control .
e . AD JU ST- HF P eak Comp (C237) for 2% overs hoot
(0 .1
division)
on t he d is p laye d signal .
f . AD JU ST-D L Com p l (13240) an dDL Com p2 ( R 241)
for best flat to p on t h e fro n t corn er .
VER TICA L M
OD
E
BOTH and C H O P
ΑS E C/DI V 1
As
Α& Β ΙΝΤ

VER T M OD E g .
R
e p eat p arts e and f until no furt he r im p rovement is
Α SO
UR
C E

ΕΧΤ

noted .
α . Set :
b . Co nn ect t he 10 Χ p ro b e to t h
e
ΕΧΤ I NPU T
connector .

h . Set t he C H 1 V O LTS/DI V switc h to 5 m V .
c .
Connect t h
e
10 Χ p
robe
tip
to
ΤΡ
537
.

i . Set t he generato r to p r oduce α 5- d ivision dis p lay .
d . C HE C K - P erio d of one
complete sq uare-wave cycle

j . C HE C K -Dis p lay aberratio ns are wit h in ±4%
(0 .2 divi-
is b etwee n 1 .6 and 2 .6 h orizontal divisions
.

sio n or less) .
e . Disco nn ect t h e 10 Χ pro
b e
from ΤΡ
537 and t he ΕΧΤ
I NPU T con nector .

k . R epeat part j fo r eac h of t he following CH 1
V O L TS/DI V switc h settings : 5 mV t hr oug h 0 .5 V . A dju st t he
ge
n
erator output and add or remove t he 10 Χ attenuato r as
f . CHECK-Two traces are visi b le fo r
all
Α
S
E
C/DI
V
necessary to maintain α 5- d ivisio n dis p lay at eac h
switc h setti n gs .

V O L TS/DI V switc h setting .

Tektronix 2235 Specifications

General

Brand	Tektronix
Model	2235
Category	Test Equipment
Language	English