J
J
J
l
l
l
l
or
Vertical
Signal
=
Conversion
X
Amplitude
Factor
VOL
TS/DIV
Vertical
switch
X
deflection
setting (divisions)
EXAMPLE:
The
reference signal
amplitude
measured is
30
volts
with
a VOL
TS/DIV
switch
setting
of
5 and the VAR
VOL
TS/DIV
control
adjusted
to
provide
a vertical deflec-
tion
of
4 divisions.
Substituting
these values in the vertical conversion
factor
formula:
Vertical
Conversion
Factor
30
4XS
1.5
Then
with
a VOL
TS/DIV
switch
setting of
1,
the peak-
to-peak
amplitude
of
an
unknown
signal, 5
divisions
high
can be
determined
by using the signal
amplitude
formula:
Signal
Amplitude:
= 1 V X 1.5 X 5 = 7.5 volts.
TIME-DURATION
MEASUREMENTS
Obtain
a
Normal
Sweep display. Be sure the VAR
TIME/DIV
control
is set to the
calibrated
detent. Set the
TIME/DIV
switch
for
a
single
event and
position
the
display
to place the time measurement
points
to
the
center
horizontal graticule line (see Fig. 20).
Measure the horizontal distance between the time
measurement points.
Multiply
the
distance
measured
by
the
setting
of
the
TIME/DIV
switch. If sweep
magnification
is used, divide this answer
by
10.
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TIME FROM
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0
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HORIZONTAL
DISTANCE
1737-18
Fig.
20.
Time duration.
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466/464
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