Measurement
(3)
of frequency and period
This will be explained with the following figure.
One period covers the time A and time B, which are sepa
rated from each other by 2.0 DIY on the screen.
When the sweep time is
1 ms/DIV x 2.0 = 2.0 ms
Accordingly, the frequency is
1/(2.0
(However, when the knob MAG x!O is at pulled out posi
tion, TIME/DIY must be converted to I /10 since the sweep
is magnified.)
-
-
--
-
ms/DIY, the period is given by
I
=2.0
10-3
X
S
3
J0-
)= 500Hz
X
- - - -
Time A
Time B
(4) Measurement of time difference
Triggering signal source
ing reference signal when measuring the time difference be
tween two signals. Assume that pulse trains as shown in (a).
Then (b) shows the case when
signal source and (c) the case where
(a)
�-
(b )
----
--
-
is selected as an offer
''SOURCE"
CHI
is taken as the triggering
is taken.
CH2
,-
I
I
I
-_I
CH2
(c)
23