Tektronix 2213A Operator's Manual

3 .
A d j ust t h e T R IGG ERLEVEL control
to ob tain α sta b le
dis p
lay .
4 . Set
t he S E C/DI V switc h to dis p lay one
complete p e-
r
iod of
t he waveform . E nsure t
h
at t
h eSE C/DI V Va r iable
control is in t he CA L d etent .
5 .
P osition t he display to p lace
t he time-measurement
p oi n ts on t he center ho r izo n tal
graticule line (see F igure 4-5) .
6 . M easure t h e H o r izo n tal dista nce between
t he time-
meas
u reme n t p oi n ts .
7 . Calculate time d u ratio n u
sing t h
e
followi ng fo r mula :
h orizo n tal S E C/DI V
d ista nce χ switc h
Time (divisio n ) setting
Duration
mag n ification factor
E XA MPLE : T he d ista nce b etwee
n t h e time meas urement
points is 8 .3 divisions (see
F igure 4-5), and t he SE C/DI V
switc h is set to 2 ms p er d
ivision . T he Χ
10
M agn ifier is
off ( knob in) .
Substit u ting t h e given val ues :
Time Duration = 8 .3 d iv χ 2 ms/div
=
16 .6 ms
Fr eque n cy
T h e fre quency of α recu r rent
signal
ca
n b e determined
f r om its time- d uration meas u reme
n t
as
follows :
1 . M easure t h e time duration of one
waveform cycle us-
ing t h e preceding "Time Duration" measurement
procedure .
2 . Calculate t h e reci p rocal of
t he time-du r atio n value to
determine t he
fre
que
n
cy
of t he waveform .
E XAMPLE : T he signal in F
igure 4-5 h as α time du ratio n
of 16 .6 ms .
Calculating t h e reci
p rocal of time du r ation :
F re q uency =

1

=

1

= 60 Hz
time d uration

16 .6 ms
Rise Time
Rise-time
measureme n ts use t h e same met
h
ods as
time
duration, exce
p t t h at t h e measureme n ts a r e ma de between
t h e 10%
and 90% p oi n ts of t he low to
h ig h tra n sition of t h e
selected waveform (see F igu r e 4-6) F all time is
measured
between
t h e 90% a nd 10% p oints of t
h
e
h ig h
to low
tra n si-
tion of
t he waveform .
1 . P reset instrument controls
and ob tain α b aseline
trace .
2 . Apply an exact 5-division
sig n al to eit h er vertical-
ch annel i np ut conn ecto
r
and set
t h e VER TICA L M OD E
switc h to d is p lay t
h
e c
h annel u sed .

Tektronix 2213A Specifications

General

Brand	Tektronix
Model	2213A
Category	Test Equipment
Language	English