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???
01/13/09 07:45
Modified:
  01/13/09 07:50
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 		 #161470 - Its EIA- 232 D&E standard
Responding to: ???'s previous message
Andy Neil said:
Ap Charles said:
For 115Kbps you require about 1200pF total line capacitance , along with your connector and driver capacitance...

I take it you mean "require no more than 1200pF" ?

But where does that number - 1200pF - come from?



Its EIA- 232 D&E standard .

-Ap



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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