Tektronix 2235 Operator's Manual

O PE RATO R 'S C
HE
C
K
S
A N D AD JU ST MEN TS
I N T R OD U CTIO N

2 . Co nn ect t he two 10 Χ pr obes (su pp lied wit h t he i n stru-
ment) to t h e C H 1 and CH2 in p ut co nn ectors .
To verify t he o pe r atio n and accuracy of
t h
is
instr u ment
before ma k ing meas u reme n ts, p erform t
h
e
following
ad j ustment p roce du res . If a dju stme n ts are
r
eq ui
r
ed beyo
nd
t he sco pe of t he operator's a d j ustments, refer t h e
instrument to α qu alified service p e r son .
Before proceed
ing wit h t hese instr u ctions, refer to
" Pr epa
r
ation
for Use" (Section 2) .
5 . Using t h e approximately 1 kH z AMP CA L s q uare-
V erify t h
at
t he PO WER swit ch is O FF (button out), t hen
wave signal as t h e in pu t, ob tain α 5- d ivisio n dis p lay of t he
p
lug t
h
e p ower
cor d into t he power-so u rce o u tlet .

signal .
If indications specifie d
in t h
ese proce
d u res cannot b e

6 . Set t h eΑSE C/DI
V switc h
to dis p lay several cycles
of
ob tai n ed, refe r t he i n st ru
ment
to α q ualified
service
person
.

t h
e AMP CA
L signal . Use t he C h a nn el 1 POSITIO N con trol
to vertically center t he d isplay .
T R AC E R OTATIO N

7 .
C
h
ec
k t h
e waveform
presentation for overs hoot and
rolloff
(see
F igure
3-2)
. If necessary, a dju st t he probe com
N ormally, t he res u lting trace will be p arallel to t h e cente r

p
en
satio
n
fo
r flat
to ps on
t h
e
waveforms
.
R efer to t h e i n -
h orizontal graticule line, and t he Trace R otation ad j ustme n t

st r uctio ns

supp lied

wit h

t he

pr obe

for

details

of
sh ould n ot be re q ui r ed . If ad j ustme n t is n ee d e d , perform t h e

compensation ad ju stment .
following p roce du re :
1
.
Preset i n st r ume n t con trols a nd obtai n α baseli ne trace
(refer to "Inst r ume n t Familiarization" in Section 4) .
2 . Use
t h eC h annel 1 POSITIO N
control to move t he
b aseli
n
e
tr ace to t h e center h orizontal graticule
li n
e .
3 .
If
t
h
e
resulting trace is not p arallel to
t h
e
center
hori-
zontal
graticule line, use α small flat-bit sc
r ewdriver to a dju st
t he TR AC E R OTATIO N control and alig
n t h
e
t r ace wit h t h e
center h orizontal g r atic u le line .
PR O BE CO MPEN SATIO
N
Misa dj
ustment of prob e com p e n sation is α
commo n
source of
measurement error . M ost attenuator
probes are
equipped with α compensation a d justment
. To ensure opti-
mum measurement accuracy, always
compensate the oscil-
losco pe pro bes b efore ma k
i n g meas u rements . Probe
com pen sation is accom p
lis h
ed
as follows :
O p erati n g Co n si d erations-2235 ΑΝ / US M -488 O p e r ato r s
3 . Set b ot h V O L TS/DI V switc h es to 0 .1 V 10 Χ PR O BE
setting and set b ot h Inp u t Co u pling switc hes to DC .
4 . Select C H 1 VER TICA L M OD E an d i nse r t t he ti p of
t he C h annel 1 p ro be into t he AMP CA L o u tp u t j ac k .
8 . Select C H 2 VER TICA L M OD E an d co nn ect t he
C h annel 2 pro b e tip to t h e
AMP
CA L ou tp u t jac k .
N
EffifflaNNOMME
CORRECT
NFERNMENE
(FLAT)
MENEENEEN
r
' so mm oso m e - ' . ' .
ίεεεεεεεεε -
1
.
Pr eset i n st r ume n t con tr ols and obtai n α baseli ne trace
( r efe r to "I n strument Familia r ization") .

Fig ur e 3-2 . Pr ob e compe n satio n .
4732-15

Tektronix 2235 Specifications

General

Brand	Tektronix
Model	2235
Category	Test Equipment
Language	English