I
I
I
I
I
I
I
I
I
4.
Set the A TIME/DIV switch for a single-event display,
with the rise time spread horizontally as much as
possible. Horizontally position the display so the 10%
point of the waveform intersects the third vertical
graticule line (see Figure
26).
5.
Depress
either the A INTEN
HORIZ
DISPLAY
push
button or the
ALT
HORIZ
DISPLAY
push
button.
Set
the B
(DLY'D)
TRIGGER SOURCE switch
to
STARTS
AFTER
DELAY.
Set
the B
TIME/DIV
switch
to
the fastest
sweep
speed
that provides a
usable
(visible) intensified zone.
6.
Use
the
DELAY
TIME
POSITION control
to
move
the start
of
intensified zone (left-hand
edge)
until
it
just touches the intersection
of
the signal
and
the
10%
graticule line
(see
Figure 26, Point A).
7.
Record the
DELAY
TIME POSITION dial setting.
8.
Use
the
DELAY
TIME
POSITION control
to
move
the start
of
the intensified
zone
until
it
just touches
the intersection
of
the signal
and
the
90%
graticule
line
(see
Figure 26, Point B).
9. Record the
DELAY
TIME
POSITION dial setting.
10. Determine time difference using the following
formula:
Time
Rise
[second
Difference = Time =
di~l
settmg
first
J[A
TIME/DIV]
dial switch
setting setting
EXAMPLE: The A
TIME/DIV
switch
is
set
to
1
JJ.S.
The
DELAY
TIME
POSITION dial setting at Point A
is
2.50
and
the
DELAY
TIME
POSITION dial setting at Point B
is
7.50
(see
Figure 26).
Substituting the given values:
Rise
Time=
(7.50-
2.50) (1) = 5
IJ.S
Time Difference Between Repetitive
Pulses
(Basic
465B)
1.
Obtain a Normal Sweep Display (refer
to
Basic
Oscilloscope Displays section
of
this manual).
2.
Depress
the
ALT
HORIZ
DISPLAY
push
button and
set
the B
(DLY'D)
TRIGGER SOURCE switch
to
REV A MAR
1981
465B/DM44
Operators
61
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