Tabor Electronics 5064, User Manual

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User Manual
3-32
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.
#Cycles
– sets the number of “0” crossing cycles for the sinc
function. Note that the default value is 4. Changing the 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 sinc pulse wave parameters to
their original factory defaults.
Gaussian Wave
The gaussian pulse waveform is useful in many applications. The
gaussian pulse parameters are re-computed every time a
parameter is changed. 1000 points are allocated for the gaussian
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 gaussian 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 gaussian 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