                   KC7WW's FFT SCOPE
                   -----------------

Please note that this is a beta version - BEWARE several restrictions exist:
Interrupt 7 will be used, and released after the program completes.

This version now supports cards using the older ESC-614 ASIC (Cardinal,
Orchid, Western Digital ..) as well as the new ESC-615 (Echo DSP card).

Please use the batch file RUN.BAT to select the input source,
input gain, and speaker volume.

                 To use the program:
                 -------------------

1) Copy all files to a temporary directory,

2) Edit the batch file "RUN.BAT" to suit your signal input,

3) Type "RUN".

4) The program require the use of the *.BGI and *.CHR graphics files.

5) Use the F9 key to toggle a "Persist" mode.

             Brief program description.
             --------------------------

The program uses a 256 point Radix-4 FFT algorithm that performs the
FFT in less than 0.6ms (16 MHz Cardinal card). A Hanning window is
used to reduce Gibbs effects. The power spectral density data is
displayed (real^2 + imag^2).

Disclaimer:
-----------

Use at your own discretion. Hope the program is of use to you.

Enjoy,


Johan Forrer, KC7WW
May 1995. 


