Virtins Sound Card Spectrum Analyzer 2.1

Virtins Sound Card Spectrum Analyzer is a powerful PC based virtual instrument. It consists of a sound card real time oscilloscope and a sound card real time spectrum analyzer and can run them concurrently.
Unlike most of the sound card oscilloscopes in the market which search trigger event after data collection, it features a specially designed data acquisition approach which is able to monitor the input signal continuously without missing any trigger event before the frame of data is collected. As a result, Virtins Sound Card Instrument boasts a very fast screen refresh rate (typically 15 frame per second) and thus a truly real time response.Virtins Sound Card Spectrum Analyzer includes sound card real time oscilloscope and a sound card real time spectrum analyzer.
It supports sophisticated triggering method including pre-trigger and post-trigger which are generally missing from other sound card based instruments.
1. The dual-channel Oscilloscope, with all of the features of a modern digital storage oscilloscope, provides four types of views: (1) Real time wave form display of Channel A and Channel B. (2) Real time wave form display of Channel A + Channel B. (3) Real time wave form display of Channel A - Channel B. (4) Real time Lissajous Pattern display for Channel A and Channel B.
2. The dual-channel Spectrum Analyzer provides four types of views: (1) Real time Amplitude Spectrum display. (2) Real time Phase Spectrum display. (3) Real time Auto Correlation display. (4) Real time Cross Correlation display. with adjustable FFT points ranging from 128 to 32768 and selectable windowing functions such as Rectangle, Triangle, Hanning, Hamming, Blackman. Visit www.virtins.com for further details.
Enhancements:
- Add "Display in Oscilloscope" option in Signal Generator so that the output signal can be displayed in Oscilloscope and Spectrum Analyzer in real time via software loop back.
- Add "Remove DC component in spectrum analysis" option in Display Setting dialog.
- Add "Save Current Panel Setting as Default","Save Current Panel Setting" and "Load Panel Setting" options in the Setting submenu.
- Add "Enable Record Length change via Point in Sampling Parameter Toolbar" Option in the display setting dialog, in order to avoid the potential confusion to beginners while retaining the flexibility for advanced users.
- Shift "spectrum type" selection to Spectrum Analyzer View Parameter Toolbar in order to be consistent with Oscilloscope View Parameter Toolbar and provide more convenience.
- Provide direct access to the "X Scale" and "Y Scale" options by double clicking on the corresponding axis in the view window.
- Fixed the slow memory leaking problem in spectrum analyzer.
- Fixed the "no Continuity" problem while scrolling in x500, x1000.