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

Contact us about
your application!

No Sound Output

No Waveform Display:

Make sure Generator is on, plus Left Output. Multi-Channel Outputs should be off. Set Bits to 16.

Check Left Wave Controls. Make sure Stream 0 is set to On.

Set Wave to Sine, Tone Freq to 440 Hz, and all modulators off.

Set Level to 100% and DC Offset to 0.

Make sure Daqarta is unPaused. Set Trigger to Auto, with Level, Hysteresis, Delay, and Holdoff set to 0 to insure display updates. Make sure Trace Update (in the X-Axis dialog) is set to minimum.

Waveform Display OK:

Make sure speakers or headphones are fully plugged in.

Make sure they are plugged into the Generator device, as described at the top of the Generator dialog. If you have more than one output device, you can change the selection in the Start Preferences dialog. (But note that the change won't take effect until the next Daqarta session.)

Open the Vol or dB Slider dialog and make sure the volume is up near the top for both Wave and Master (if Vol dialog), or dB is near the top (if dB dialog).

In Windows XP and earlier systems, right-click the Windows Mixer (the small speaker icon in the system tray) and select Open Volume Control. Check to make sure Master and Wave are unmuted.

In Vista or Windows 7, 8, or 10, right-click the speaker icon and select Volume Mixer. There will be a separate slider and mute button for Daqarta, as well as Speakers. Check that these are not muted or set to minimum.

Check also the sound card manufacturer's own custom mixer controls, which are usually accessed by a system tray icon. Particularly in Vista/7/8/10/11, these may be much more comprehensive than those in the Volume Mixer.

Check to see if the card is multi-channel (surround sound). If so, you may need to unmute and/or raise the volume on the Front slider (or whichever output you have your speakers or headphones connected to) in the Windows Mixer, or in the custom mixer for your card. Daqarta can currently only control multi-channel sliders in Windows XP, not Vista/7/8/10/11 yet.

See also Troubleshooting


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