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:



Spectrum Analyzer

Signal Generator

(Absolutely FREE!)


Pitch Tracker


DaqMusiq Generator
(Free Music... Forever!)

Engine Simulator

LCR Meter

Remote Operation

DC Measurements

True RMS Voltmeter

Sound Level Meter

Frequency Counter
    Spectral Event

    MHz Frequencies

Data Logger

Waveform Averager


Post-Stimulus Time
Histogram (PSTH)

THD Meter

IMD Meter

Precision Phase Meter

Pulse Meter

Macro System

Multi-Trace Arrays

Trigger Controls


Spectral Peak Track

Spectrum Limit Testing

Direct-to-Disk Recording



Frequency response

Distortion measurement

Speech and music

Microphone calibration

Loudspeaker test

Auditory phenomena

Musical instrument tuning

Animal sound

Evoked potentials

Rotating machinery


Product test

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Timing Units (Smpl/sec)

Controls: Gen Dlg >> Stream >> Smooth TC >> Smpl/sec
Macro: SmplSec

The button to the right of the Smooth TC control shows units of samples (Smpl) or seconds (sec). You can toggle between these by clicking the button, which also changes the Timing Shift control units to match, as well as the Shift Timing Modulator dialog. If Step mode is active, it also affects the format of Step Size.

In seconds mode, you can enter values in H:M:S format even though Daqarta will only display seconds. For example, if you enter '1:30:0' Daqarta will show 5400 seconds.

This same button appears in other Generator dialogs, as well as the Trigger dialog, and setting the current units anywhere affects all dialogs alike. This doesn't change anything in the actual output, only the display and data entry format. It can be toggled back and forth as needed to see the equivalent samples or time.

Macro Notes:

SmplSec=sec sets the units to seconds, as does SmplSec=1. SmplSec=Smpl or SmplSec=0 sets Samples, and SmplSec=x toggles between the two.

When reading the current state, as in UU=SmplSec, only 0 or 1 values are returned. Likewise, only numerical values may be used in an IF statement such as IF.SmplSec=1.

Note that this command affects the expected values for TmStepSize, TmSmoothTC, and TmShift, as well as the Shift Modulation TmModDepth command.

See also Random / Step Timing Dialog, Waveform Stream Controls


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