Technical data

DOC-01-TELAS-CRG-4 ASTi ACE Studio Components Reference Guide Rev.M
46 Copyright © 2014 Advanced Simulation Technology inc.
2.20. PulseStep
Summary: The Pulse Step can generate a repeating series of up to sixteen
sequential pulses.
Description: The Pulse Step can generate a repeating series of up to sixteen
sequential pulses of arbitrary pulse width and pulse amplitude. The pulses follow
immediately one after the other - there is no space between them. Typically, this
signal is used to frequency or amplitude modulate other signals.
The string of pulses can be looped repeatedly with a specified loop time, or can be
triggered as a "one-shot" sequence. When looped, the loop time can be modulated
with another signal. If the loop time is modulated, the pulses can be shortened and
lengthened with the loop time (fractional step times) or kept at a constant length
(fixed step times.)
At the end of the pulses, the output of the signal goes to a constant amplitude which
is specified in the “amplitude off” field (i.e. the amplitude when all the pulses are
off).
In addition, the gain of the signal can be modulated by an external signal.
Figure 6: Pulse Step Signal
Duration 1 Duration 2
Duration 3
Duration 4
Amplitude 1
Amplitude 2
Amplitude 3
Amplitude 4
Amplitude off
Time
Amplitude
Audio Input
GainMod
Type Default Value
audio n/a
Description: Provides a connection to a signal which will modulate
the amplitude of the pulse sequence.
LoopMod
Type Default Value
audio n/a
Description: Provides a connection to a control component which
gives the loop modulation depth.
Control Inputs
Ampli-
tudes 1-16
Type Default Value
float32 1.0
Description: Provides the amplitudes for the pulses. See the figure
in the Pulse Step description.
Durations
1-16
Type Default Value
float32 1.0
Description: Provides the durations for the pulses in microseconds
(fixed times) or as a fraction of the sweep time (fractional times).
See the figure in the Pulse Step description.
Gain
Type Default Value
float32 1.0
Description: Amplitude gain of the signal. If the gain connection is
blank then the gain scale factor is used as the gain value, or the gain
is the scale factor times the output result of the control component.