DUTY CONTROL
While observing the square waveform on the oscilloscope,
rotate the
DUTY
control
CW
from the CAL positon.
Observe one slope of the square remains constant while the
other slope
is
variable over typically a
10:l
range, producing a
pulse waveform.
INVERT
SWITCH
Depress the
INVERT
potentiometer (pull position) and observe
the positive and negative slopes of the pulse waveform reverse
(invert)
By
selecting the Square wave and repeating the same procedure,
this model DIGITAL FUNCTION
GENERATOR
become very versatile pulse
generators.
The pulse width may be determined by the following formula:
PULSE
WIDTH
=
the reciprocal
of
2
X
freq. setting.
In other words, the pulse width equals one-half the time
period of the frequency set by the
RANGE
and MULTIPLIER controls.
PULSE OUTPUT
Connect the oscilloscope to the PULSE output.
By
adjusting the generator frequency, the
DUTY
control and the
INVERT
switch, the high-speed
TTL
pulse or CMOS pulse may be utilized
as a very versatile pulse generator. With the
INVERT
switch in the
NORM
position, the pulse width "on time"
is
determined by the
RANGE
and
MULTIPLIER setting and the repetition rate "off time"
is
set
by
the
DUTY
control.
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