UltimaSerial Spectrogram Software: Spectrogram
Data logger

 

Windaq add-ons

 

Spectrogram

 

Ultimaserial XChart

 

Ultimaserial Classroom

 

WinDaq Add-on ID

7018

Menu Name Appeared under WinDaq->View->Add-ons

Spectrogram

Spectrogram

Spectrogram Windaq add-on employs a powerful FFT module. It visualizes the frequency domain of an analog waveform in real-time, with 3D color-scaled waterfall spectrogram

Features

  • Multiple FFT sizes: 1024, 2048, 4096 and 8192 Please make sure you upgrade to the latest DATAQ ActiveX. WinDaq Activex had a glitch that affects certain configuration of the add-ons and it was fixed recently.
    • Due to Windaq's memory allocation approach, the following rule should be observed if you wish to use this add-on:
      • For FFT size of 1024, up to 58 channels can be enabled in Windaq
      • For FFT size of 2048, up to 29 channels can be enabled in Windaq
      • For FFT size of 4096, up to 15 channels can be enabled in Windaq
      • For FFT size of 8192, up to 7 channels can be enabled in Windaq
    • DC component of the signal can be removed before FFT is performed
  • True full ADC resolution . No more need for the Dynamic Amplifier option available in the first generation of Spectrogram
  • Multiple Spectrograms can be enabled for different channels under Windaq
  • Channel number is a 0-based index to Windaq's scanlist. For example, if Windaq has channel 3,4,6,7 enabled, one can enter 0 for channel 3, 1 for channel 4, 2 for channel 6 and 3 for channel 7. Must read: The mystery of channel index!
  • Regarding the update interval
    • The update interval is controlled by Windows's Timer, which is
      • 15.6ms minimum by default under Windows 7
      • 20ms minimum by default under Windows XP
    • The power of PC's CPU also determines if the minimum update interval is achievable or not
    • Actual (averaged) update interval will be displayed on the spectrogram is started
    • Actual (averaged) update interval will be used to calculated the elapsed time for the cross-hair
  • For the Spectrum display on top
    • Single click on AutoSet button will adjust the scale to bring a weak signal into sight immediately
    • While acquiring spectrum, you may
      • use the left mouse button to drag the waveform up and down
      • double-click the left or right mouse button to change the scaling of the waveform. 
      • push down the right mouse button to enable a vertical cursor to exam to the waveform.
    • Once you stop the live frequency display, you may 
      • push down the left mouse button on the chart to enable a vertical cursor and drag it around to study the spectrum
      • push down the right mouse button on the chart to enable a cross hair and drag it around to study the spectrum
  • For the Waterfall display on the bottom
    • The waterfall display follows the scaling and offset of the spectrum display on top
    • You may also click the left mouse button on the waterfall chart to enable a crosshair to show the frequency/elapsed time  
  • The frame of Spectrogram II is sizable, and the two charts will adjust accordingly
  • Intelligent Channel Select: Highlight/Select a channel in Windaq and fire up this Windaq add-on, and it will use the selected channel as its default channel

To Use This WinDaq Add-on

  1. Confirm WinDaq 3.16 or higher is installed on your computer

  2. Install WinDaq add-ons.

  3. Start WinDaq, and you will find the WinDaq add-ons integrated into Windaq->View->Add-ons menu

  4. Intelligent Channel Selection: Highlight/Select a channel in WinDaq and fire up the WinDaq add-on you wish, and the WinDaq add-on will use the selected channel as its default channel. 

  5. If channel index number is required for a WinDaq add-on, please enter the 0-based index to Windaq's scanlist. For example, if WinDaq has channel 3,4,6,7 enabled, one can enter 0 for channel 3, 1 for channel 4, 2 for channel 6 and 3 for channel 7.

  6. Do not change WinDaq's configurations while WinDaq add-ons are running, or some add-ons may terminate.


It provides multiple FFT sizes,  higher resolution and scalable charts. The following video demonstrate some of the new features of Spectrogram

 

Last update: 01/29/13

www.UltimaSerial.com