[GreenKeys] Precise baud timing

[Jim Cooper]

On 12 Nov 2025 at 9:45, Harold Hallikainen via GreenKeys 
wrote:

> However, if the printer loses sync,
> it seems like the 31 ms stop bit
> allows the printer to resync more
> quickly than a 22 ms stop bit. 

Exactly right.   The 22ms stop bit was 
mostly used by Western Union, who figured 
it would increase data throughput by a 
significant percentage on heavily used circuits. 

The longer stop bit assures that the shaft comes 
to a rotational stop and WAITS for the next 
start bit. 

w2jc