Tektronix 2221 User Manual

Basic
Applications --
2221
Operators
Л
П
П
O
6. Set
the
SEC
/ DIV
switch to
obtain
a
display of
the
measurement points on the two pulses between which the
measurement is to be made .
PHASE
DIFFERENCE
BETWEEN
SINUSOIDAL
SIGNALS
1.
Preset
instrument
controls
and
obtain a
baseline
trace .
7. Set
the
trigger
position as
required to
obtain
the
entire
pulse
display
.
8.
Press the
SAVE
/
CONT
switch
to
activate
SAVE
mode to
save the
waveform and
to
present a
more
stable
display for
measurement .
Cursors will
appear on
both the
Channel
1
and
Channel
2
traces .
2. Using
probes
or
coaxial
cables
with
equal time
delay ,
connect
the
reference
signal
to the CH 1
OR X input
connector and the
other
(
phase
-
shifted )
signal to the CH
2
OR
Y
input
connector .
3.
Select a
VERTICAL
MODE
of
BOTH and ALT
or
CHOP
,
depending on the input
signal
frequencies
.
9.
Use
the
CURSORS
control to
move
the
active
cur
sor to
the 50 %
point of
the
Channel 1
pulse
leading
edge
.
П
Л
1
7
4.
Set
the
INT switch
to
the CH 1
position
and
adjust
the
TRIGGER
LEVEL
control
and
the
TRIGGER
SLOPE
control
for
a
stable ,
triggered
display
.
NOTE
Pulses
with
fast
rise
time
have
only
a
few
sample
points on the
leading
edge
,
and it
may not be
possible
to
place the
dot at
exactly the 50 %
level on
the
leading
edge
.
5.
Use
a
SEC
/
DIV
switch
setting
that
displays
about
two
cycles of
each
input
signal .
6. Set
the
STORE / NON -
STORE
switch
to
the
STORE
position
(
button
in ) .
10.
Push
the
SELECT C1
/ C2
button to
select the
other
cursor
,
and
use the
CURSORS
control
to
position the
active
cursor at the
50 %
level
of
leading
edge
of
the
Chan
nel
2
pulse (
see Figure
6-19
) .
П
1
1
ก
7.
Check
that
the
TRIGGER
LEVEL
control
is
adjusted
for a
stable
,
triggered
acquisition .
11.
Read
the
time
difference
between
the
pulses
from
the crt
readout .
NOTE
Use the
NORM
Trigger
Mode
for
low -
repetition - rate
signals ( below
approximately 20 Hz ) . This
ensures
that
the
storage
window
and
trigger
signal
are
syn
chronized
when
the
trace is
triggered .
AV15.80V
AV2
=
2.20V
AT =
0.149ms
100
90
8. Set
both
VOLTS /
DIV
switches and
adjust the
VOLTS
/
DIV
Variable
controls to
obtain a 5 -
division vertical
display of
each
input
signal
.
CHANNEL
1
NOTE
CURSORS
10
图
CHANNEL 2
П
П
П
Use
the
Vertical
POSITION
controls in
conjunction
with
the
VOLTS
/
DIV
Variable
controls to
vertically
center the 5 -
division
display
between the %
and
100 %
dotted
reference
graticule
lines .
sv
av
Olims
4998-21
9. Set the
trigger position
and
TRIGGER SLOPE
switch as
necessary to
place
the
measurement
points
within
the
graticule
area
(
see Figure
6-20A
)
.
Figure
8-19
.
Time
difference
between
two
time
-
related
pulses .
П
6-19

Tektronix 2221 Specifications

General

Brand	Tektronix
Model	2221
Category	Test Equipment
Language	English