[Elecraft] [K3] Why is the serial data transfer rate so slow?

[Jack Brindle]

The time needed for a firmware update is more limited by the time needed to write each word of data to flash memory than the data rate. It takes about 5 milliseconds to write each word to flash, so if the program you are updating is lengthy, then it is going to take a while. 

What this means is that even at 38400 bps, we still have to wait for the processor to write its data. Increasing the data rate would not speed things up.

Jack Brindle, W6FB

Sent from my iPad

On Apr 3, 2013, at 10:49 AM, Barry <w2up at comcast.net> wrote:

> I didn't time it, but it seemed much slower than usual.  This brought two
> things to mind.  First, wondering why the max speed is 38K, when serial
> ports have higher speeds; and second, is something funky was going on?  I
> believe this is the first K3 firmware update I've done since adding a P3 to
> the line.  Does that slow it down?
> 
> Barry W2UP
> P.S.  Apologies for not IDing in my original post - an oversight.
> 
> 
> 
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