Specifications

3.
STARTS AFTER DELAY. For
the
most
accurate
measurement,
set the
B
TIME/DIV
switch to the
fastest
sweep that
provides
usable
(visible)
intensified
zones.
Use the DELAY TIME
POSITION
control
to
move
the intensif
ied zone
to the
first
pulse
(see
Figure
27, A Sweep Display).
Observe
the
B
Sweep
display and adjust the
DELAY
TIME
POSITION control
to
move
the rising
portion
of
the
pulse
to a
vertical reference line
(see
Figure
27,
B
Sweep
Display).
Record the setting of the
DELAY TIME
POSITION
control dial.
Turn the DELAY
TIME
POSITION
control clockwise
to
move
the
rising
portion
of the second
pulse
to the
same
vertical reference line. Observe the A
Sweep
display to
position
the
intensified
zone
to the correct
pulse.
Do
not
change the settings of the horizontal
POSITION
controls.
Record
the setting of the
DELAY TIME
POSITION
dial.
Determine time difference
using
the
following
formula:
f second
Dirl:T.""..
=
|
dial
f
setting
EXAMPLE: The first
dial setting
is
1.31 and the second
dial
setting
is
8.81
with
the
A TIME/DIV
switch
set to
0.2
ps
(see
Figure
27],.
Substituting the
given
values:
Time
Difference
=
(8.81
-
1.31)
(0.2)
=
1.5ps
TIME
DIFFERENCE
(B)
B DLY'D
DISPLAY
(A)
A DISPLA
Figure
27.
Time difference
between
repetitive
pulses.
4.
5.
6.
7.
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62
@
4658/DM44 Operators