Reply by Neil ●December 15, 20072007-12-15
mikeotp@gmail.com wrote:

> regards:
> 
>   How could I test RS485(half duplex) or RS422(full duplex)
> 
> 
>    any positive suggestion is welcome.
>    best regards to you all
> 
>    mike-smith

Buy a converter for your PC.  Like B&B Electronics.
Reply by Grant Edwards ●December 15, 20072007-12-15
On 2007-12-15, mikeotp@gmail.com <mikeotp@gmail.com> wrote:

> On 12$B7n(B16$BF|(B, $B>e8a(B12$B;~(B19$BJ,(B, Grant Edwards <gra...@visi.com> wrote:
>> On 2007-12-15, mike...@gmail.com <mike...@gmail.com> wrote:
>>
>> >   How could I test RS485(half duplex) or RS422(full duplex)
>>
>> With an oscilloscope and a "reference" device that you can set
>> up to send and receive data.
>>
>> --
>> Grant Edwards                   grante             Yow!  Yes, but will I
>>                                   at               see the EASTER BUNNY in
>>                                visi.com            skintight leather at an
>>                                                    IRON MAIDEN concert?
>
> regards:
>
>    excuse me ,what is the "reference" device?


A device with an RS485 or RS422 interface that you know works.


>    mike-smith


You write rather English rather oddly for somebody named Mike
Smith...

-- 
Grant
Reply by ●December 15, 20072007-12-15
On 12$B7n(B16$BF|(B, $B>e8a(B12$B;~(B19$BJ,(B, Grant Edwards <gra...@visi.com> wrote:

> On 2007-12-15, mike...@gmail.com <mike...@gmail.com> wrote:
>
> >   How could I test RS485(half duplex) or RS422(full duplex)
>
> With an oscilloscope and a "reference" device that you can set
> up to send and receive data.
>
> --
> Grant Edwards                   grante             Yow!  Yes, but will I
>                                   at               see the EASTER BUNNY in
>                                visi.com            skintight leather at an
>                                                    IRON MAIDEN concert?


regards:

   excuse me ,what is the "reference" device?
   could someone excellent to explain more detail? ^.^

   any positive suggestion is welcome.
   best regards to you all

   mike-smith
Reply by ●December 15, 20072007-12-15
On 12$B7n(B16$BF|(B, $B>e8a(B12$B;~(B19$BJ,(B, Grant Edwards <gra...@visi.com> wrote:

> On 2007-12-15, mike...@gmail.com <mike...@gmail.com> wrote:
>
> >   How could I test RS485(half duplex) or RS422(full duplex)
>
> With an oscilloscope and a "reference" device that you can set
> up to send and receive data.
>
> --
> Grant Edwards                   grante             Yow!  Yes, but will I
>                                   at               see the EASTER BUNNY in
>                                visi.com            skintight leather at an
>                                                    IRON MAIDEN concert?


regards:

   excuse me ,what is the "reference" device?
   could someone excellent to explain more detail?

   any positive suggestion is welcome.
   best regards to you all

   mike-smith
Reply by Grant Edwards ●December 15, 20072007-12-15
On 2007-12-15, mikeotp@gmail.com <mikeotp@gmail.com> wrote:


>   How could I test RS485(half duplex) or RS422(full duplex)


With an oscilloscope and a "reference" device that you can set
up to send and receive data.

-- 
Grant Edwards                   grante             Yow!  Yes, but will I
                                  at               see the EASTER BUNNY in
                               visi.com            skintight leather at an
                                                   IRON MAIDEN concert?
Reply by ●December 15, 20072007-12-15
regards:

  How could I test RS485(half duplex) or RS422(full duplex)


   any positive suggestion is welcome.
   best regards to you all

   mike-smith