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Tektronix 2221 User Manual

Tektronix 2221
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Basic
Applications
-
2221
Operators
C
REFERENCE
SIGNAL
14.
Use
the
CURSORS
control
to
position
the
active
cursor
to
the
first
zero
-
crossover
point
of
the
phase
shifted
signal
(
see
Figure
6-20B
)
.
U
A
=
341.8ms
100
30
A
CURSOR
AT
FIRST
ZERO
CROSSOVER
C
15.
Note
the
phase
-
difference
time
(
T2
)
from
the
crt
readout
.
M
5
DIVISIONS
16.
The
amount
of
phase
shift
in
degrees
is
calculated
from
the
following
formula
:
ACTIVE
CURSOR
AT
THIRD
ZERO
Sms
CROSSOVER
(
360
°
)
T1
U
U
(
A
)
SINEWAVE
PERIOD
TIME
(
T
)
STORE
MODE
DISPLAY
.
Phase
shift
(
degrees
)
Tz
x
360
°
TT
PHASE
-
SHIFTED
SIGNAL
A
6.30ms
ACTIVE
CURSOR
POSITIONED
AT
FIRST
ZERO
CROSSOVER
OF
SHIFTED
SIGNAL
EXAMPLE
:
The
period
(
T1
)
of
the
reference
signal
shown
in
Figure
6-20
is
34.8
ms
,
and
the
phase
difference
time
(
T1
)
is
6.3
ms
.
100
90
u
V
Substituting
these
values
into
the
equation
:
Phase
Shift
(
degrees
)
6.3
X
10-35
34.8
X
10
-
S
x
360
°
65.17
°
.T2
Т
..
Sms
ال
(
B
)
PHASE
DIFFERENCE
TIME
(
T2
)
SAVE
MODE
DISPLAY
.
4998-22
SLOPE
Figure
6-20
.
Phase
difference
between
sinusoidal
signals
.
The
slope
of
a
particular
portion
of
a
waveform
is
the
rate
of
change
of
voltage
with
respect
to
time
.
The
follow
ing
procedure
is
useful
for
making
the
measurements
required
for
determining
the
slope
of
a
portion
of
a
waveform
.
10.
Push
the
SAVE
/
CONT
switch
to
activate
SAVE
mode
.
1.
Preset
instrument
controls
and
obtain
a
baseline
trace
.
11.
Use
the
CURSORS
control
to
move
the
active
cur
sor
to
the
sine
wave's
first
zero
-
crossover
point
(
center
horizontal
graticule
line
)
.
2.
Set
the
STORE
/
NON
-
STORE
switch
to
the
STORE
position
(
button
in
)
.
C
C
12.
Push
the
SELECT
C1
/
C2
button
to
select
the
other
cursor
,
and
use
the
CURSORS
control
to
position
the
active
cursor
to
the
sine
wave's
third
zero
-
crossover
point
(
360
°
)
.
3.
Set
the
VOLTS
/
DIV
switch
to
obtain
about
five
divi
sions
of
vertical
amplitude
.
13.
Note
the
time
of
the
sine
-
wave
period
(
T1
)
from
the
crt
readout
.
4.
Set
the
SEC
/
DIV
switch
to
horizontally
spread
the
portion
of
the
waveform
to
be
measured
across
the
width
of
the
graticule
area
(
see
Figure
6-21
)
.
C
C
6-20
u

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Tektronix 2221 Specifications

General IconGeneral
BrandTektronix
Model2221
CategoryTest Equipment
LanguageEnglish

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