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!

Data Zero Manual Adjust

Controls: Zero Dialog >> Manual >> Adjust
Macros: LI.ZeroAdj, RI.ZeroAdj, etc.

When Data Zero Manual mode is active, the Adjust controls allow you to set any arbitrary value as the effective zero position for waveform data.

The units will be in percent of full scale, or in volts (or User Units), depending on the state of the Units button on the right. You can toggle Units at any time.

Usually, you will want to use the adjacent Null controls to automatically set the Adjust value to the current average input value (after first applying an effective zero condition). But a manual adjustment can be handy for special circumstances, and is especially useful for "what if" studies of Histogram and PSTH averages.


Macro Notes:

LI.ZeroAdj=10 sets the Left Input channel Manual Adjust value to 10% of the full-scale range, assuming the Zero Units button is off.

If Units is active, this same command attempt to set to 10 volts (or 10 User Units), limiting the value to the actual full-scale range as needed. You can use LI.ZeroAdj=10m to set 10 mV (or 10 milli-units for User Units).

Similarly, RI.ZeroAdj sets the Right Input, LO.ZeroAdj sets the Left Output, and RO.ZeroAdj sets the Right Output.

Alternatively, you can use the Ch. prefix to set a channel previously specified via the Ch Channel Select command.

Note that attempts to use these commands when the controls are disabled in Spectrum, Spectrogram, or Pitch Track modes will result in "Control disabled. Aborting macro."


See also Zero (Cursor, Average, Peak, or Manual)

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