Tektronix 2213A Operator's Manual

6 . Select ADDVER TICA L
M OD E and press i n t h e
I NVER T button, and slig h
tly
read ju
st t he CH 2 V O L TS/DI V
V a r iable control for
maxim
u
m cancellation of t he un d esire d
signal com p onent (see Figure
4-3 Β ) .
Am p lit u de Compariso n ( R atio)
In
some a pp lications it may be necessary to esta b lis h α
set of
d eflection factors ot h er t han t h ose indicated by t
h
e
V
O
LTS/DI V switc h settings . T h is is u seful for com p
aring
un
k nown signals to α reference signal of k now n am p lit ude .
To
accom p lis h t h is, α refere nce signal of kn own
amplitude is
first set to
an
exact num b er of vertical divisions b y a dj usti
ng
t h eV O LTS/DI V switc h and V aria b le con trol . Un k nown sig-
n
als can
t h en be q uic k ly and accurately com p are d wit
h
t
h
e
reference signal wit h out distur b ing t h e setting of
t h
e
V
O
LTS/DI V V ariable control . T h is procedure is as follows :
1 . Pr eset instrume n t controls and obtai n α baseline
trace .
2 .
Apply
t he r efe r ence signal to eit h er vertical c
h annel
in p ut and set t he VER TICA L M OD E switc h to display
t he
ch annel used .
3 . Set t
h
e
am p litude of t h e refe r ence signal to five verti-
cal
divisions b y ad j usti ng t he V O L TS/DI V switc h a
n
d
V O L TS/DI
VV ariable control .
4 . Disconnect t h e reference signal and apply t
h
e un-
known signal to b e measure d to t he same chann el i npu t
.
Ad j ust t he ve r tical p osition of t he waveform so t h at its b ot-
tom edge just touc h es t he 0°/ ο line on t he crt .
5 . Horizontally
position t he waveform so t h at its top
most features cross
t he center vertical graticule li n e (see
Figu r e
4-4) .
6 .
R
ead
t he percen t ratio directly from t he gra du ations
of t he center
li n
e,
referring to t he 0% an d 100% percentage
mar ks on
t h e left edge of t he graticule (1 minor division
eq uals
4% for α 5- d ivision dis p lay) .
TIME ME AS UREMEN TS
Time Du r ation
To
measure time b etween two points on α
waveform,
use t h e following procedure .
/ 1 . Preset i n strument controls and o b tai
n
α
b aseline
t r ace .
2 . Apply t he signal to eit h er ve r tical-c han
nel input con-
n ector and set t he VER TICA L M OD E switc h to dis p lay
t he
ch annel used .

Tektronix 2213A Specifications

General

Brand	Tektronix
Model	2213A
Category	Test Equipment
Language	English