ComTekk SINAD software
Version History
www.comtekk.com 


v1.20 	3/23/2011
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1. Changed SINAD calculation from 10log to 20log, since it is voltage measurement.
2. SINAD meter scale increased to 40dB max.
3. THD = (mean of 2nd + 3rd harmonics) / Signal(rms)
4. Smoothing applied to THD also
5. Measurement bandwidth 300-3,300 Hz

v1.10		10/11/10
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1. Updated components to resolve app errors on some XP machines. Built with new compiler.
2. Scope has enhanced toolbars for X/Y zoom, etc. Manual Y-axis control removed.
3. Smoothing enabled by default.
4. Mixer button now opens recording control panel in Windows 7, XP or Vista
5. Frequency change updates source generator without disabling

v1.04		3/29/10
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1. Smoothing now applied to THD+N also.
2. SINAD algorithm updated
3. POWER button now toggles input stream on/off
4. Corrected calculation error in THD+N.
5. Measurement bandwidth upper limit changed to 3100 Hz to ensure capture of 2nd harmonic 1kHz

v1.03		7/30/08
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1. Fs can now be adjusted from 300 to 2,000 Hz.  Built-in tone generator frequency now follows this setting.
2. Mixer button now opens Windows Recording Control instead of Volume Control.
3. Meter smoothing function now works correctly.
4. Fixed spectrum analyzer frequency indication (X-axis scaling).
5. Added Windows Vista audio mixer support.

v1.02		8/26/07
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1. Updated temp cert to facilitate online delivery

v1.01		8/14/07
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1. Fixed key registration problem

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1.00  INITIAL RELEASE 4/24/07
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