This tab has the following controls:
Waveform Destination Section
Channel
Independent checkboxes allow the definition of standard waveforms for
Channel 1, Channel 2, Channel 3, or Channel 4. One of the boxes is always
checked. When pressing the ‘Send To Instrument’ button, the waveform is
sent to all channels that are checked.
Generate I/Q Data
If checked, baseband (I/Q) signals will be generated. The effect of this control
depends on the selected signal type. For Sinusoidal waves, the resulting
complex signal will be a single spectral line located at positive or negative
frequencies. This implies that users can type negative numbers into the
“Waveform Freq.” field. For noise, the resulting complex signal will be a
limited-bandwidth Gaussian noise with uncorrelated positive and negative
frequency components. All the other waveform types result in the same signal
being generated by both I and Q assigned channels.
I/Q selection toggle buttons for each channel will be shown when the
Generate I/Q Data checkbox is checked. In-Phase (I) and Quadrature (Q)
components can be independently assigned to each channel.
Segment Number
Target segment for each channel can be defined independently. This field is
configurable only for channels sourced from ‘extended’ memory. The segment
range is 1 to 16777216. For channels sourced from ‘Internal’ memory, the
segment is always set to 1, and it displays the text ‘Internal’.
Basic Waveform Parameters Section
Waveform Type:
The following waveform types are available:
Sine: Sinusoidal waveform. Frequency and Initial Phase parameters can
be defined for this waveform type using the corresponding controls. If the
Generate I/Q checkbox is checked, two sine waves with a 90º phase
difference will be assigned to the I and Q components.
Square_Linear: Square signal with linear transitions. Frequency, Rise
Time, Fall Time, Duty Cycle, and Initial Phase parameters can be defined
for this waveform type using the corresponding controls.
Square_Cos: Square signal with cosine shaped transitions. Frequency,
Rise Time, Fall Time, Duty Cycle, and Initial Phase parameters can be
defined for this waveform type using the corresponding controls.
Triangle: Triangular waveform with linear transitions. Frequency,
Symmetry, and Initial Phase parameters can be defined for this waveform
type using the corresponding controls.
Sinc: Sin x/x waveform. Frequency, Symmetry, Sinc Length, and Initial
Phase parameters can be defined for this waveform type using the
corresponding controls.
Noise: Gaussian noise with limited bandwidth. Frequency, Crest Factor,
and Noise Bandwidth parameters can be defined for this waveform type
using the corresponding controls. If the Generate I/Q checkbox is
checked, two uncorrelated noise waveforms will be assigned to the I and
Q components.
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