Tektronix 2221 User Manual

Basic
Applications
—
2221
Operators
6. Use the
CURSORS
control
to
move the
active
cur
sor to the start of the frequency to be measured .
AV1E0.0ØV
AT =
6.65ms
100
i
90
7. Push the
SELECT
C1 / C2
button to
select the other
cursor , and use the CURSORS control to move the cursor
to the end of the frequency to be measured .
บ
N
V
8. Read
the
frequency (
between the
cursors
)
from the
crt
readout .
บ
CURSORS
41
RISE TIME
27
Ilms .
U
4998-16
Rise - time measurements use the same methods as
time duration , except that the measurements are made
between the 10 % and
90 %
points
on the
leading
edge
of
the waveform . Fall time is measured between the 90 % and
10 % points
on the
waveform trailing
edge .
Figure 6-14 .
Time
duration
,
cursor
method
.
4
1. Preset instrument controls and obtain a baseline
trace .
6.
Use the
CURSORS
control to
move
the
active
cur
sor to
the
start of the
time to be
measured .
2. Set the STORE / NON - STORE switch to the STORE
position ( button in ) .
7.
Push
the
SELECT C1 /
C2
button to
select the
other
cursor
,
and use
the
CURSORS
control
to
move
the
cursor
to the
end
of
the
time
to
be
measured .
3. Select the appropriate display window and Trigger
SLOPE settings that will display the leading edge of the
waveform
at
the start of the
trace .
UU
8.
Read
the
time
duration
(
between
the
cursors )
from
the
crt
readout .
4. Set
the SEC
/ DIV
switch
for a
single
-
event
display
,
with the rise
time spread
horizontally as much as
possible
within the viewing area . The waveform's maximum and
minimum
levels must still be
visible
(
see
Figure 6-15 ) .
FREQUENCY
I
1.
Preset
instrument
controls and
obtain
a
baseline
trace .
AV1 =
100.0
%
AT = 461 . Ons
C
2. Set the
STORE
/ NON -
STORE
switch
to the
STORE
position
( button
in ) .
100
1
90
EXACT
5 -
DIVISION
DISPLAY
3.
Select
a
VOLTS / DIV
switch
setting
that
gives the
desired vertical deflection ,
U
4.
Set
the
SEC /
DIV
switch to
display
one
complete
period of the waveform to be measured .
2V
SAMPLE 5ms
41
4998-17
5. Use
the AT
/ 1 / AT
button to set
the
time
measure
ment mode to 1 / DELTA TIME .
Figure 6-15 .
Rise - time setup
, five - division
display .
C
C
6-16

Tektronix 2221 Specifications

General

Brand	Tektronix
Model	2221
Category	Test Equipment
Language	English