Tabor Electronics 5064, User Manual

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User Manual
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parameters; These are:
Frequency
– programs the frequency of the square waveform.
Note that at low frequencies (up to about 200 kHz), when you
modify the frequency parameter, the output responds with coherent
change however, at higher frequencies, the waveform has to be re-
computed every time and therefore, when you modify the
frequency, the output wanders until the waveform is being re-
computed and then restored to full accuracy.
Amplitude
– programs the amplitude of the output waveform. Note
that amplitude and offsets can be programmed freely within the
specified amplitude window, as explained in the Programming
Amplitude and Offset section in this chapter. Note that setting the
amplitude parameter in this menu overrides amplitude setting in all
other menus.
Offset
– programs the offset of the output waveform. Note that
offset and amplitude can be programmed freely within the specified
amplitude window, as explained in the Programming Amplitude and
Offset section in this chapter. Note that setting the offset parameter
in this menu overrides offset setting in all other menus.
Duty Cycle
– programs the square wave duty cycle (pulse width to
period ratio). The duty cycle is programmed as percent of the
period. The default value is 50 %.
Reset Parameters
– Resets the square wave parameters to their
original factory defaults.
Triangle Wave
The triangle waveform is a commonly used waveform. The
waveform is generated from a lookup table that has 1000 points
and therefore, the triangle waveform is generated with 1000-points
accuracy up to about frequency setting of 200 kHz (output
frequency = sample clock frequency / number of points). As
frequency is increased above 200 kHz the number of points is being
reduced automatically. The triangular waveform is reasonable up to
about 20 MHz where 10 points are available to generate its shape.
As the number of points decrease further, the shape becomes
distorted to a point where it is not usable anymore.
There are certain menus that provide access to triangle waveform
parameters; These are:
Frequency
– programs the frequency of the triangle waveform.
Note that at low frequencies (up to about 200 kHz), when you
modify the frequency parameter, the output responds with coherent
change however, at higher frequencies, the waveform has to be re-
computed every time and therefore, when you modify the
frequency, the output wanders until the waveform is being re-
computed and then restored to full accuracy.