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Chapter 5 Tutorial
Burst
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5
Additive Modulation (Sum) The “Sum” feature adds the modulating
signal to the carrier. For example, you can add controlled amounts of
variable-bandwidth noise to a signal or create two-tone signals. The
internal modulation generator in the 33500 Series can produce the same
continuous waveform as the main generator, so the Sum function lets
you to create many signals that would have required two instruments
before.
The Sum feature increases the amplitude of the output signal by the
amplitude of the modulating signal. This might cause the instrument to
switch to a higher output-voltage range, resulting in a momentary signal
loss. If this is a problem in your application, turn on the Range Hold
function. If the voltage increase could damage your device under test,
apply Voltage Limits.
Burst
You can configure the waveform generator to output a waveform with a
specified number of cycles, called a burst. You can use burst in one of
two modes: N-Cycle Burst (also called “triggered burst”) or Gated Burst.
N-Cycle Burst An N-Cycle burst consists of a specific number of
waveform cycles (1 to 1,000,000) and is always initiated by a trigger
event. You can also set the burst count to “Infinite” which results in a
continuous waveform once the waveform generator is triggered.
Three-Cycle Burst Waveform
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