AIM Program Update  
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The AIM and VNA programs can be run in the demo mode if the hardware is not connected. Sample data files are included so the programs can be evaluated without the hardware. This mode is also useful for off-line analysis of data files that have been previously saved.

NEW Oct 26, 2015 -- Version: AIM_910B.
This version can be used with the new AIM4300 as well as the AIMuhf, AIM4170 and the PowerAIM120.

Click for latest program for the PowerAIM150

(The AIM4300 analyzer requires program version AIM_910 or later.)
Note: The AIM program may not run if the exe file is placed directly on the desktop. Put the program in a folder on the hard drive and create a shortcut icon for the desktop to launch the program.

  • New scale labels for L and C axiis.
  • Graph resizing has an on/off option.

July 8, 2015 -- Version: AIM_910A.
This version can be used with the new AIM4300 as well as the AIMuhf, AIM4170 and the PowerAIM.
(The AIM4300 analyzer requires program version AIM_910 or later.)
Note: The AIM program may not run if the exe file is placed directly on the desktop. Put the program in a folder on the hard drive and create a shortcut icon for the desktop to launch the program.

Significant features introduced in recent versions of the AIM program:

  • Function to display min, max, avg and difference of data between two cursors.
  • Doubled number of points for TDR for better distance resolution.
  • Smith chart Admittance circles have been added. Circles can be in different colors.
  • Fixed "Refer to Antenna" function.
  • Fixed custom cal operation below 100 KHz.
  • Added Zoom function. "Z" to zoom, control-Z to unzoom.
  • FastRep option while in Point Data Tune mode. Update rate can be fine-tuned with Averaging.
  • Display tuning data on Smith chart in Point Data mode.
  • Popup Notes window on the Help menu. (help for hotkeys and equations)
  • Overlay scan files with any limits. The plotting style can be specified. The plots can be done with circles, squares, wide lines, etc to distinguish overlaid files. (Scan files from earlier versions of the AIM program can be recalled and overlaid.)
  • The graph size can be changed by dragging it with the mouse or by specifying numeric values in a dialog box. Graph size can be entered manually in pixels or percent. (The previous graph size can be restored by clicking "previous graph size".)
  • Programmable Trigger Output (see Appendix 14).
  • Improved performance for low values of series resistance.
  • Improved crystal measurements for high Q crystals.
  • New cal file data format. This allows for new features. New cal files are required for versions after AIM_880.
  • Fixed freq values in CSV file so they're the same as those in the SCN file.
  • Added labels to the band highlight areas, for example, 40M, 20M, 15M, etc
  • Amplitude programming in the Constant Freq mode can be used with AIMuhf and AIM4170D.
  • Added function to calculate length of phasing line.
  • Fixed BitMap function so it always shows the whole AIM graph.
  • Stub tuning runs much faster now.
  • Optional cursor for a tablet pc makes it easier to move the vertical data cursor. (refer to the Setup menu)

    Previous version: AIM_865A.zip (Released on June 10, 2013)

    Here's a diagram showing the AIM menus (some new features are not shown in this diagram).


    The latest version of the VNAuhf program is here:
    VNAuhf PROGRAM UPDATE


    The latest version of the VNA program is here:
    VNA PROGRAM UPDATE - version VNA_546B


    If you are using a USB interface, here's some helpful information.

  • June 10, 2013 -- Version: AIM_865A.
    This version can be used with the AIMuhf, AIM4170 and the PowerAIM.

    New features in version 865A:

    • The smoothing function has been refined for a more accurate display.
    • The config file is checked more careful to make sure it is valid.
    • The distance scale for the TDR plot is now correct when the scale factor is changed after a scan.
    • The graph overlay feature has been fixed.

    Latest version: AIM_865A.zip
    Previous version: AIM_865.zip

    Here's a diagram showing all the AIM menus.


    The latest version of the VNAuhf program is here:
    VNAuhf PROGRAM UPDATE


    The latest version of the VNA program is here:
    VNA PROGRAM UPDATE - version VNA_542


    If you are using a USB interface, here's some helpful information.

    June 10, 2013 .
    The manual for the AIM4170 is available in html format.
    AIM manual in English:    www.w5big.com/AIM_122212.htm
    By entering this URL into the dialog box of the Google translation program, the manual can be displayed in other languages. Although the translation is not perfect, it can be helpful. Unfortunately, Google does not display the pictures and graphs. (if anyone knows how to resolve this problem, please let me know). You can open the English version in one web browser page and the other language in another browser to view the pictures side by side with the translated text.

    For convenience, some direct links to the manual in other languages are included below:
    Deutsch
    Français
    Español
    Português
    Italiano
    Danske
    Norsk
    Svenska
    Polski
    Russian
    Japanese

    June 2, 2013 -- Version: VNAuhf_625.
    This version can be used with the VNAuhf.

    New features in version 625:

    • TDR plot is consistent when plot distance scale factor changes.
    • Fixed antenna bandwidth measurement.
    • Changed SWR scales to show "round" numbers per division
    • Bandscan magnitude values can be readout with the cursor.
    • Fixed band highlighting flag.