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!

Limits Channels

Controls: Spectrum Dialog >> Limits >> Left, Right In
Macros: LimitsL, LimitsR

Spectrum Limits tests can be applied to either or both input channels by toggling the Left In and/or Right In buttons.

Both channels use the same Max and Min limits curves, so both must be calibrated with compatible units. If both Left In and Right In buttons are selected here, then if one channel has the SPL button active in its User Line dialog, the other must also.

If both buttons are selected (and both Input channels are active and selected for display), the Y axis is shown for the Left input range, and the Max and Min limits curves are displayed appropriately for that channel. If the Right input has a different sensitivity, its trace will not match the Y axis or the Max and Min curves, but the Limits tests will still function properly for both channels.

If you toggle either channel display off, the Y axis and Max/Min curves will be shown for the remaining selected input. The Limits tests continue to work regardless of the channel display state.

Note: If both inputs are active (so the Y axis shows the Left input range) but only Right In is selected in Limits, no limits curves are shown. You must de-select the Left In display so the Y axis shows the Right input range.

NOTE: These buttons are disabled after the trial period, unless a Professional license key is present.


Macro Notes:

LimitsL=1 applies Limits to the Left Input, LimitsL=0 removes them, and LimitsL=x toggles the current state.

Similarly, LimitsR controls the application of Limits to the Right Input.


See also Spectrum Control Dialog, Spectrum Limits Dialog


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