The latest display software supplied includes options at start up for 
sampling rates of 2500 and 1000 Hz in addition to 10000/7142 Hz.  PIC 
software will be updated to incorporate these additional sampling 
rates, but PCB modification will be needed because of the need to 
then monitor two rate select inputs.  At the moment just ignore the 
start up menu options.

To enable the display software to find the COM port to which the 
interface is attached, the environment variable DSPCOM needs to be set.
Before running the software type   SET DSPCOM=2  (replacing 2 by 
whichever COM port is chosen).  It will probably be convenient to 
incorporate this command into the AUTOEXEC.BAT file so the variable 
is set automatically at start up.


On the waterfall plots on screen help isn't very helpful!  The 
various plotting functions may be changed whilst plotting, but the 
functions are slightly different for the 16 and 256 colour plots.

WFALL16
		C / [ctl]-C changes the  colour scale
		T / [ctl]-T for the background threshold.
			These only affect the lines subsequently plotted

the R key resets the display to top of screen.

FFT size can be changed by the +/- keys

For FFT sizes greater than 1024 the screen may be scrolled left to 
right by using the appropriate cursor keys. Or </> 

D / [ctl]-D controls the decimation of sampling rate, ie by averaging 
samples gives 10000/5000/3333 Hz etc

F1  generates a .BMP file of the current display. 



WFALL256
		
		+/-    R    D/[ctl]-D    T/[ctl]-T   F1    as above

C/[ctl]-C changes the colour mapping, but now alters the whole display
V / [ctl]-V changes the frequency averaging 
P  changes the colour palette used for the waterfall display
N  resets the colour palette

