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 B Level

Controls: Gen Dlg >> Stream >> Wave >> Pulse >> B Level
Macros: PulseBlevel, PulseMir

Similar to Pulse A Level. However, since it is often desired to have the positive and negative pulses of a biphasic pair mirror each other, there is a special 'Mir' (Mirror) button to the left of the A and B Level buttons. When this is active, the B Level will be grayed out; any changes to A Level will cause the actual B Level value to be the negative of the A Level.

Setting the B Level to 0 (or to the 0 Level value) will give what appears to be a single monophasic pulse, but this is usually not the best way to do that. It's better to set B Width to 0, so that A Width will give complete control over the duty cycle. However, there may be occasions where you want to deliberately limit the range of duty cycles, and for that you can set B Level to 0 and use B Width to set the minimum Off (baseline dwell) time.


Macro Notes:

L.1.PulseBlevel=50 sets the Left Stream 1 Pulse B Level to 50%.

L.1.PulseMir=1 sets Left Stream 1 Pulse Level to Mirror. L.1.PulseMir=0 cancels it, and L.1.PulseMir=x toggles Mirror off and on.

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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