This is a letter 5 with a bugkey. Key down is Low, and Key Up is High. You see that the period is 100 mS, or 2 div, which mieans it is 24 wpm keying. (The word PARIS has 50 elements, and if the word is sent 24 times per minute, there is 120 elements in 60 seconds, thus 50 ms per element.) The weight is slightly heavier than 50%, because I adjusted so that the dot contact is closed when you press the Dot lever and the weight is at rest.
This is a letter F. Looks nice, n’est-ce pas? The trick is you check your keying both with your ears and eyes. And if you get a nice waveform like in the above figure, try to remember your finger movement you did just before and repeat it.
My opinion is that once you master the exact keying, then you are free to modify it to your liking.
This graph is by gnuplot before (green) and after (red) eliminating chatter.
The same with extented timescale. Since the chatter elimination is by a digital signal processing, there is no delay not as in the case with an analog CR filter.
BEGIN{b4=0;n=100}
{
if(b4==1 && $1==0)
i=n
if(i>0 || $1==0)
print "0"
else
print "1"
b4=$1
if(i>0)
i=i-1
}
The program is equivalent to using a retriggerable monomulti vibrator which is triggerd with a High-to-Low transition.