[Elecraft] [acom-list] Re: Elecraft K3 and ACOM 2000A

[Per-Tore Aasestrand]

The RS-232 standard goes quite far and also covers signalling etc.
Have a look here:

http://en.wikipedia.org/wiki/RS-232

P-T / LA7NO

On 15 September 2014 18:11, Lynn W. Taylor, WB6UUT <
KX3 at coldrockshotbrooms.com> wrote:

> On 9/15/2014 8:42 AM, Dick Dievendorff wrote:
>
>> My point is that multiple transmitters on an RS-232 link aren't likely to
>> work well because the protocol is point to point, and there is no
>> "collision
>> recovery" protocol. This isn't an Ethernet cable. It's RS-232.  Point to
>> point, not multipoint.
>>
> Ethernet is multipoint to multipoint because there are protocols on top of
> the electrical specification that allow multiple transmitters, and detect
> and deal with corrupt data and collisions.
>
> RS-232 doesn't have that level of protocol.  I don't have the spec. handy,
> but I don't think it goes beyond the electrical specification.
>
> It's possible to put some more elaborate protocol on top of RS-232 and
> make it work, but it isn't part of the K3 serial protocol.
>
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