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!

Screen Zero Individual Null buttons

Controls: Zero Dialog >> Screen Zero >> Individual >> Null
Macros: LI.ZeroScrnNull, etc

The four Null buttons in a column below the Individual Screen Zero button are labeled LI (Left In), RI (Right In), LO (Left Out) and RO (Right Out). Clicking one of these buttons forces the value of the associated edit control for that channel trace to 0. This will typically center a bipolar trace vertically on the screen.


Macro Notes:

LI.ZeroScrnNull= (value ignored) nulls the LI (Left In) control. Use RI., LO., or RO. prefixes for the other channels.

Note that these Null buttons are disabled unless the Individual button is active (depressed), and the display is in waveform mode (neither Spectrum, Spectrogram, nor Pitch Track active). If you attempt to use a ZeroScrnNull command when the button is disabled, the macro will abort with a "Control disabled. Aborting macro." message.

You can check if this control is enabled via an E.IF.ZeroScrnNull= control enable IF test. You don't need to specify which Null button via LI. or other prefixes, since all are enabled or disabled together.


See also Zero (Screen and Data)

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