Daqarta
Data AcQuisition And Real-Time Analysis
Scope - Spectrum - Spectrogram - Signal Generator
Software for Windows
Science with your Sound Card!
The following is from the Daqarta Help system:

Features:

Oscilloscope

Spectrum Analyzer

8-Channel
Signal Generator

(Absolutely FREE!)

Spectrogram

Pitch Tracker

Pitch-to-MIDI

DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Period
    Event
    Spectral Event

    Temperature
    Pressure
    MHz Frequencies

Data Logger

Waveform Averager

Histogram

Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls

Auto-Calibration

Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording

Accessibility

Applications:

Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery

Automotive

Product test

Contact us about
your application!

Pulse A Width

Controls: Gen Dlg >> Stream >> Wave >> Pulse >> A Width
Macro: PulseAwidth

Depending on the Width Units setting, this width can be given in percent, degrees, samples, or time. If A Width is set to 0 then the B pulse is the only pulse, and vice-versa.

When relative (Percent or Degrees) units are specified, the actual width of the pulse changes to maintain that portion of each cycle as set by the main wave frequency. As you set the frequency higher and higher, the pulse widths will eventually become so small they are only a single sample wide. Beyond this point you may get unpredictable results.

When absolute (Samples or Seconds) units are specified, the width is constant and only the baseline (0 Level) portion of the wave changes duration with frequency. As you set the frequency higher and higher in these modes, the baseline portion will eventually vanish. Beyond this point you may get unpredictable results. In particular, if the Trigger Mode is set to Normal there won't be a trigger event to cause a trace update.


Macro Notes:

L.1.PulseAwidth=10 sets the Left Stream 1 Pulse A Width to 10 units. Depending on the Width Units setting, this may be percent, degrees, samples, or seconds.

Note that the actual value set may be limited due to the period of the current Tone Frequency. For example, you can't set a pulse width of 10 seconds unless the frequency is less than 0.100 Hz.

Note that setting Pulse values directly via macro does not automatically set the Wave to Pulse. Use Wave=Pulse to do that.


See also Wave Dialog, Pulse Wave.

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