52
DELAY-TIME
POSITION
DIAL:
1:31
(A) A
DISPLAY
I
100
90
?
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DELAY-TIME
POSITION
DIAL:
8:81
VERTICAL
(REFERENCE
LINE
I
l
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@oR®
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~
MEASURE TIME FROM A TO B
(B)
B
DL
Y'D
DISPLAY
1737·10
TIME
DURATION MEASUREMENTS
(BASIC 466/464)
Obtain a Delayed Sweep Display. Set the A
TIME/DIV
switch
to
display a single event. Be sure the VAR
TIME/DIV
control
is in the calibrated detent. For the most
accurate measurement, set the B
TIME/DIV
switch
to the
fastest sweep speed that gives a usable (visible) inten-
sified zone. Vertically position the
display
to
place the time
measurement points to the
center
horizontal
graticule
line
(see Fig. 28).
Use the DELAY
TIME
POSITION dial
to
move the start
(left-hand edge)
of
the intensified zone to just
touch
the
intersection
of
the signal and the center horizontal
graticule
line (see Fig.
28,
Point A).
Note
the DELAY
TIME
POSITION dial setting.
Use the DELAY TIME POSITION dial
to
move the start
of the intensified zone to the second
time
measurement
point
(see Fig. 28, Point B). Note the DELAY
TIME
POSITION dial setting.
Substitute
the DELAY
TIME
POSITION dial settings
into the time difference
formula
to obtain the time
duration.
Fig.
27.
Time difference between repetitive pulses.
EXAMPLE: The A
TIME/DIV
switch is set
to
2 ms and
the B
TIME/DIV
switch
is
set to
.1
ms.
466/464 DM44 Operators
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