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???
01/13/09 08:28
Modified:
  01/13/09 10:09
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 		 #161478 - Not relevant here - beyond the spec!
Responding to: ???'s previous message
Ap Charles said:
Its EIA- 232 D&E standard

But that isn't actually relevant here:

Foreword to TIA/EIA-232-F said:
As with previous version of EIS/TIA-232, TIA/EIA-232-F provides operation to a maximum data signalling rate of 20 kbit/s.


If you look carefully at the Datasheets for modern so-called "RS232" transceivers, you will see that they all make some sort of reference to performing beyond the limits of the formal "RS232" specification - and the key areas in which they exceed the spec are usually transmission speed and load capacitance.

eg, see: http://www.maxim-ic.com/appnotes....number/882

See alos: http://www.national.com/an/AN/AN-216.pdf

Therefore, again, the OP needs to look at the Datasheets for some modern, high-speed "RS232" transceivers...

[rant]
Unfortunately, the EIA/TIA is one of the few remaining standards organisations that beleives that you should pay for the ptivilege of reading their standards.
IMO, this is a major contributing factor to all the confusion surrounding RS232...

:-(

[/rant]

List of 28 messages in thread
TopicAuthorDate
Someone gave me suggest            01/01/70 00:00      
   Unhelpful subject line            01/01/70 00:00      
   I would use RS485 instead            01/01/70 00:00      
      it would be easier ..            01/01/70 00:00      
      rs-485 with fullduplex            01/01/70 00:00      
         Not 485            01/01/70 00:00      
            rs-485 not the rs-232 signal            01/01/70 00:00      
               Have you actually looked at any datasheets yet?            01/01/70 00:00      
         More details , RTS, DTR            01/01/70 00:00      
            6 lines uart and 2 power supply            01/01/70 00:00      
               RE: Could I used CAT-5            01/01/70 00:00      
               Yes (Little Maths)            01/01/70 00:00      
                  speed??            01/01/70 00:00      
                     You do the maths!            01/01/70 00:00      
                  1200pF ?            01/01/70 00:00      
                     Similiar confused me...            01/01/70 00:00      
                        One more point.            01/01/70 00:00      
                           boost the driver current            01/01/70 00:00      
                              No linear relationship            01/01/70 00:00      
                     Its EIA- 232 D&E standard            01/01/70 00:00      
                        Not relevant here - beyond the spec!            01/01/70 00:00      
                           3 TX and 3 Rx distance 20 m and 115K2            01/01/70 00:00      
                              What does the datasheet tell you?            01/01/70 00:00      
                                 Thank's            01/01/70 00:00      
                                    Try this one aswell            01/01/70 00:00      
                                    before testing            01/01/70 00:00      
                                       What "testing"            01/01/70 00:00      
   RE: The data speed must 115K2            01/01/70 00:00      

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