EXAMPLE: The horizontal distance between the
10%
and
90%
points
is
5 divisions (see Figure 19) and the TIME/
DIV
switch
is
set
to
1
J,J.s.
No
magnification
is
used.
Substituting the
given
values:
Rise
time =
5 divisions X 1
J.I.S/division
= 5
J.I.S
1
TIME DIFFERENCE BETWEEN TWO
TIME-RELATED PULSES
1. Obtain a Normal Sweep Display (refer
to
Basic
Oscilloscope Displays section of this manual). Ensure
that the
VAR
TIME/DIV control
is
in
the calibrated
detent.
2. Set the A TRIGGER SOURCE switch
to
CH
1.
3.
Using
probes or cables with equal time delays connect
the reference
signal
to Channel 1 and the comparison
signal
to
Channel 2 inputs.
4. Depress the
CH
1 and
CH
2 VERT
MODE
push
buttons.
Use
either
CHOP
(in)
orAL
T (out) VERT
MODE
switch depending on the frequency of input
signals.
In
general,
CHOP
is
more suitable for
low-
frequency signals and AL T
is
best for high-frequency
signals. Center each of the displays vertically (see
Figure 20).
NOTE
Input
signals must
be
time related
for
a stable
(measureable) display.
CHANNEL
1 (REFERENCE)
\
r
I
\
j
'~
\
(.!..
'Ill
50%
AMPLITU
LEVEL
~
'
-®~
l
..!
I
"
I
'®
I
I
I
I I
---.1
HORIZONTAL
Il-
l DIFFERENCE
CHANNEL
2
M
EASURE
ME FROM
ATOB
Tl
465/DM·0-14
Figura 20. Time difference between two time-related pulses.
50
465B/DM44 Operators
@
I
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