Tektronix 2221 User Manual

Basic
Applications -- 2221
Operators
C
li
AT = 0.525mis
SAVE REF
WAVEFORM
AV2.08V
100
100
90
90
.
t
+++++++
ACTIVE
CURSOR
ON
SECOND
PULSE
50 % LEVEL
N
CURSOR
ON FIRST
PULSE
50
%
LEVEL
-
C
PULSES CENTERED
VERTICALLY
10
COMPARISON
WAVEFORM
21
Di
1ms
Com
4998-19
4998-20
Figure
6-17
.
Waveform
comparison
.
Figure 6-18 .
Time
difference
between
repetitive
pulses .
NOTE
TIME
DIFFERENCE
BETWEEN
REPETITIVE PULSES
Pulses
with
fast
rise times
have
only
few
sample
points on the
leading edge , and
it may not be
possi
ble to place the cursor dot at exactly the 50 % level .
1. Preset instrument controls and obtain a baseline
trace .
9. Read the time difference between puises from the
crt readout .
2. Set the STORE / NON - STORE switch to the STORE
position
(
button
in ) .
1
UU
3.
Select
a
VOLTS
/
DIV
switch
setting
that
gives
about
five
divisions of
display
amplitude
.
TIME
DIFFERENCE
BETWEEN
TWO TIME - RELATED PULSES
ឬ
1. Set the VERTICAL MODE switches to BOTH and
ALT .
4. Use the
selected
channel
Vertical POSITION
control
to
center
the
display .
UU
5. Set
the
SEC
/
DIV switch to
display the
points of
interest
between
which
the
measurement is to
be
made .
2. Use
probes
or
coaxial cables with equal
time delay
to apply the pulse signals to be measured to the input
connectors ; one to Channel 1 and the second to Chan
nel 2 .
6. Push
the SAVE /
CONT
button
to
activate SAVE
mode
to
hold the
acquired
waveform and
to
provide a
more
stable display for
measurement .
3. Set the VOLTS / DIV switches to obtain about three
divisions of
display
amplitude for
each
signal
.
U U
U 외
7. Use
the
CURSORS
control to
move the
active
cur
sor to
the 50 %
level on the
leading
edge of the
first pulse .
4. Set the
STORE / NON -
STORE Switch
to STORE
( button in ) , set the TRIGGER Mode switch to NORM , set
the
SOURCE switch to
INT , and
set the INT
switch to
CH
1
.
บ
8. Push the SELECT C1 / C2 button to select the other
cursor and use the CURSORS control to move the active
cursor to the 50 % level on the leading edge of the second
pulse ( see Figure 6-18 ) .
5. Adjust the TRIGGER LEVEL and SLOPE control for
a
continuous
,
triggered
acquisition
of the
signals .
C
C
6-18

Tektronix 2221 Specifications

General

Brand	Tektronix
Model	2221
Category	Test Equipment
Language	English