Tabor Electronics 5064, User Manual

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3
Using the Instrument
3-33
in this menu overrides offset setting in all other menus.
Exponent
– sets the exponent factor for the gaussian function.
Changing the default exponent value to a different number requires
re-calculation of the waveform and may take a few seconds until the
waveform is computed and generated at the output connector.
Reset Parameters
– Resets the gaussian pulse wave parameters
to their original factory defaults.
Exponential Wave
The exponential pulse waveform is useful in applications simulating
capacitor charge or discharge. Not being a true pulse generator, the
exponential pulse parameters are re-computed every time a
parameter is changed. 1000 points are allocated for the exponential
pulse shape 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 exponential pulse 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 of the pulse is deteriorated to a point where it is not usable
anymore.
There are certain menus that provide access to sinc pulse
waveform parameters; These are:
Frequency
– programs the frequency of the sinc 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.
Exponent
– sets the exponent factor for the exponential function.
Setting the exponent to a negative value inverts the exponential
function. Changing the default exponent value to a different number
requires re-calculation of the waveform and may take a few
seconds until the waveform is computed and generated at the