possible reasons of cryptic characters in Minicom output

Martin T m4rtntns at gmail.com
Sun Sep 25 23:18:10 UTC 2011


Adam,
thank you for this information! Just for information, I have seen many
APC devices, which have speed 2400bps by default.
However, I got into contact with the radio device vendor.


regards,
martin


2011/9/20 Adam Lackorzynski <adam at os.inf.tu-dresden.de>:
>
> On Tue Sep 20, 2011 at 01:26:07 +0300, Martin T wrote:
>> No, this radio device is not accessible from other computer as well. I
>> tried with Minicom under OpenSUSE and the very same issue appeared. I
>> have tried with spare radio device(identical model), but still no
>> connection over RS232. On the other hand I can connect to Cisco
>> equipment over console port without problems.
>> Are there methods/techniques to pinpoint the problem? I mean once I
>> see the Rx led of the DE9<->USB adapter blink when I hit a key on my
>> keyboard, I can probably assume, that physical connectivity is correct
>> because the device responds something? Now is it somehow possible to
>> make sure, that bit rate is correct? Or is it possible to find out the
>> correct parity? Or is this just reading the documentation +
>> trial-and-error? :)
>
> Finding out the baud-rate is just trying out different rates, there is
> no rate negotiation or similar. Usually, it's 9600, 19200 or 38400, very
> seldomly anything else.
> Since the Cisco box works the connection should be ok, minicom should be
> ok, the computer should be ok. Remains the radio device?!
>
>
> Adam
> --
> Adam                 adam at os.inf.tu-dresden.de
>  Lackorzynski         http://os.inf.tu-dresden.de/~adam/
>



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