I don't know why you need to be here. This is some pretty niche stuff. I'm not gonna ask. Enjoy!
Oh, Poop!
You're probably looking at a preview of this file. This app can't run here. You need to figure out how to load this into a web browser. If you have the internet - You can use this copy.
A dit is one unit. A dah is three. Gaps are one unit between the parts of a letter, three between letters, and seven between words. That is the whole system.
Speed is measured against the word PARIS, which is exactly fifty units long. At 20 wpm you send it twenty times a minute, so a dit lasts 60 millisecond.
Set the overall speed lower than the character speed and the letters stay quick while the gaps stretch. It is how most people learn: your ear gets used to the real shape of a letter instead of learning a slow one it has to unlearn later. The extra time is split between letters and words the way the ARRL specifies.
A dit is written as a sixteenth note and a dah as a dotted eighth, at 480 ticks per quarter note, with a tempo chosen so the real duration matches the speed you picked. Import it and the dots and dashes land on the grid.
Download your own copy of this utility. Works with no server required.