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???
07/06/05 09:59
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#96672 - Isolate
Responding to: ???'s previous message
Mehdi said:
And you are almost certainly have experienced my problems!

Indeed!

Can you solve this problem without using a laptop,Andy?

Yes - two options:
1. Redesign your system such that its line interface isn't affected by a grounded serial link (this is obviously possible, otherwise no modem could ever work with a PC!)

2. Isolate the serial link.

When I had this problem (it was years ago) we bought a few RS232 isolator modules and used them whenever we needed to plug in a PC - this obviously saves any design changes & additional costs in your system.

We got them from Newbridge or something - they don't exist any more, but I'm sure there must be something similar out there; eg, http://www.maxim-ic.com/quick_view2.cfm/qv_pk/1310

List of 25 messages in thread
TopicAuthorDate
Serial Connector Problem!            01/01/70 00:00      
   Grounding            01/01/70 00:00      
      Grounding            01/01/70 00:00      
         Isolate            01/01/70 00:00      
            B+B            01/01/70 00:00      
               Thanks Andy and Steve            01/01/70 00:00      
   Grounding!            01/01/70 00:00      
   Isolated RS-232 with microcontroller            01/01/70 00:00      
      Just a thought...            01/01/70 00:00      
      picture too big            01/01/70 00:00      
         Sorry for a huge picture            01/01/70 00:00      
      Here is isolated RS232-TTL converter            01/01/70 00:00      
      Info: Members posting pictures            01/01/70 00:00      
         Standards            01/01/70 00:00      
            Re: Standards            01/01/70 00:00      
      is that really less than $3.20            01/01/70 00:00      
         Re: it that really less than $3.20            01/01/70 00:00      
            1000 up prices            01/01/70 00:00      
            that affect everything            01/01/70 00:00      
               Re: that affect everything            01/01/70 00:00      
                  reinventing the wheel            01/01/70 00:00      
                     will this suffice?            01/01/70 00:00      
                        for me, yes            01/01/70 00:00      
                           MAX 3250            01/01/70 00:00      
   Slap in the face!            01/01/70 00:00      

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