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???
07/03/06 04:07
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 		 #119537 - CAT5E - UTP and RS485
Responding to: ???'s previous message
Can this cable CAT5E - UTP, ie Category 5E, unsheilded twisted pair cable be used for RS485.

I have read so much discussions on the shielded cable for RS485 and networking, I was introduced to the above cable by a person who is incharge of networking in their factory. I think they are probably using ethernet, why is this unsheilded cable used for networking.

I am trying to implement USB and RS485, there is a nice silabs chip the CP2103 for this, I went to a shop dealing with networking components and found most of the cables on their shelves were the unsheilded types.

So where is this unsheilded twisted pair wires used in such large quantities? The 4 pair per cable is the most popular type.

Regards,
John.



List of 38 messages in thread
TopicAuthorDate
rs485 connection with 8051            01/01/70 00:00      
   RS 485            01/01/70 00:00      
      I have recommended the above appnote for            01/01/70 00:00      
         Yes, but...            01/01/70 00:00      
            cable shield connection ...            01/01/70 00:00      
               is it P.G. Woodhouse?            01/01/70 00:00      
               Hard and soft grounding            01/01/70 00:00      
                  grounding differential signals            01/01/70 00:00      
                     for such Maxim has 'the cure'            01/01/70 00:00      
                        Also AD & Linear Tech            01/01/70 00:00      
                     PEC            01/01/70 00:00      
                        RS485 using 2 wires only            01/01/70 00:00      
                           Using two wires only            01/01/70 00:00      
                              Thanks Russell Bull            01/01/70 00:00      
                                 Shielding            01/01/70 00:00      
                                    CAT5E - UTP and RS485            01/01/70 00:00      
                                       Cat5E & RS485            01/01/70 00:00      
                                          to shield or not to shiels, that is the            01/01/70 00:00      
                                             Thanks Erik            01/01/70 00:00      
                                             common mode voltage            01/01/70 00:00      
                                                comments to common            01/01/70 00:00      
                                                   Even without any tolerance            01/01/70 00:00      
                                                      you are right - need anothe cuppa            01/01/70 00:00      
                                                      I never tried...            01/01/70 00:00      
                                                         What threshold voltage do you use?            01/01/70 00:00      
                                                Transmitting signal ground and +5V            01/01/70 00:00      
                                       Yes            01/01/70 00:00      
                                          Thanks Russel, Erik and Kai            01/01/70 00:00      
                                             re 485 cabling            01/01/70 00:00      
                                                Slew rate controlled drivers prefered            01/01/70 00:00      
                                                   I agree but do not            01/01/70 00:00      
                                                      Of course, this is no excuse for fumblin            01/01/70 00:00      
                                                   slew rate controlled - low speed ??            01/01/70 00:00      
                                                      there is a graph in one of the 485 appno            01/01/70 00:00      
                                                      250kbps?            01/01/70 00:00      
                                                links to juicy B&B 485 stuff            01/01/70 00:00      
                                                re 485 cabling            01/01/70 00:00      
                                                   you found a better link than the one I            01/01/70 00:00      

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