Virtins Sound Card Signal Generator is a sound card based Signal Generator and an off-line Oscilloscope.

Virtins Sound Card Signal Generator is a powerful PC based virtual instrument. It consists of a sound card based Signal Generator and an off-line Oscilloscope.

The dual channel Signal Generator (Sweep/Arbitrary/Function Generator) provides the following types of waveform for output: Sine, Square, Triangle, Saw Tooth, White Noise, Pink Noise, Multi-tones, Arbitrary via user-configurable waveform library, MLS, Musical Scale, DMTF, at either a fixed frequency, or a frequency that sweeps linearly or logarithmically within specified frequency range and time duration. Amplitude sweep is supported.

The dual-channel off-line Oscilloscope provides four types of views: Wave form display of Channel A and Channel B, Wave form display of Channel A + Channel B, Wave form display of Channel A - Channel B, Lissajous Pattern display for Channel A and Channel B.

The off-line Oscilloscope can be used to view the signal generated by the Signal Generator. It can also be used to view the WAV files recorded by other sound recording software.

Here are some key features of "Virtins Sound Card Signal Generator":

· Bandwidth: 10 Hz - 96 kHz (sound card dependent).
· Maximum Output Voltage: about 2 V (sound card dependent).
· Selectable sampling frequency (up to 192 kHz), sampling bit resolution (8, 16 or 24 bits) and sampling channels (one or two) (sound card dependent).
· Support predefined waveforms: Sine, Rectangle, Triangle and Saw Tooth. The duty cycle for a rectangle wave is adjustable.
· Support non-repetitive pink noise and white noise generation.
· Support multi-tones generation. A Multi-Tones is a combination of predefined waveforms with different amplitudes, frequencies, and phases. Pink noise and white noise with specified amplitude can also be added into the multi-tones. Maximum 32 tones can be combined in each channel.
· Support arbitrary waveform generation through user defined waveform library. A waveform library is a TXT file containing the coordinates of each point in one cycle of the waveform. There is no limit as to how many points can be used to define a waveform.
· Support Maximum Length Sequence (MLS) generation. The length can be selected from 127 to 16777215.
· Support Dual Tone Multi-Frequency (DTMF) generation.
· Support musical scale tone generation.
· The predefined waveform, multi-tones and user-defined waveform can be generated at a frequency that sweeps linearly or logarithmically within a specified frequency range and time duration.
· The predefined waveform, white noise, pink noise, multi-tones, user-defined waveform and MLS can be generated at an amplitude that sweeps linearly or logarithmically within a specified amplitude range and time duration.
· Allow to specify the phase difference between the two channels if the output signals have the same frequency.
· The amplitude of the output signal is adjustable.
· The generated signal can be saved as a WAV file or a TXT file for a duration of up to 1000 s.
· Support calibration of the output channels.
· The output signal can be looped back partially (i.e. only one channel while the other channel can be used for field input) or fully (i.e. both channels), via the software itself, to the input of the oscilloscope for display and analysis in real time. Synchronized operation between the Signal Generator and the Oscilloscope with timing accuracy in the same order of the sampling frequency is also supported. It is possible to specify when to start the Oscilloscope after the Signal Generator is started.
· It is possible to add a mask with specified periodic on/off timing to the signal to be output so that a burst-type signal can be generated. You can choose whether to phase-lock each burst.
· The waveform displayed in the Oscilloscope can be played or cyclically played.


Requirements:

· 8, 16 or 24 bit Windows compatible sound card


Limitations:

· 21 days trial

What's New in This Release: [ read full changelog ]

· Added support for other ADC/DAC devices such as NI DAQmx device and VT DSO from Virtins Technology, in addition to sound cards.
· Added support for sound card ASIO driver.
· Added Vibrometer function in Multimeter, and acceleration,
· velocity, displacement waveform conversion in Oscilloscope.
· Added Cycle RMS and Cycle Mean function in Multimeter
· Added A X B in Oscilloscope.
· Added Roll Mode in Oscilloscope. A Roll check box is added in
· Sampling Parameter Toolbar.
· Added a Record Button in Sampling Parameter Toolbar as a shortcut to put Oscilloscope into Record mode.
· Added Smoothing via Moving Average as one of the Intra-Frame
· processing method in Spectrum Analyzer.
· Added Exponential Average as one of the Inter-Frame processing
· method in Spectrum Analyzer
· Added measurement of 1st~7th harmonics energy in Spectrum Analyzer. The phase of the 1st harmonics will also be measured.
· Added measurement of energy contained in up to 8 user defined
· frequency bands.
· Added detection o...