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!

Generator Frequency Places

Controls: Gen Dlg >> Stream >> Tone Freq >> Step Mode >> Freq Places
Macro: FreqPlcs

This sets the number of decimal places that will be shown for all Generator frequency controls, such as Tone Freq, AM, FM, or PWM Modulation Frequency, and Sweep Start and End Frequencies.

Generator frequencies have a resolution of 0.000089407 Hz at a sample rate of 48000 Hz, or about 89 parts per million. Entered values will always be quantized to the nearest 89 ppm step, so the displayed value may not match what you enter. Setting the Places control to show more decimal places does not allow setting frequencies to finer resolutions, only knowing the actual frequency to higher precision.

Tip: If you want to scroll frequency values with the finest possible steps, go to the top of this Step Mode dialog and make sure Step Direct (default) or Step Hertz is selected. Enter a value of 0 in the control under the selected button. The value will show as 0.00001 Hz, which is interpreted internally to scroll at the finest resolution (89 ppm).


See also Frequency Entry Step Mode, Tone Frequency Dialog

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