RS485
|
|----------Back to back rs485-----rs485-----rs485------Termination
|Node 1
|
|
|----------Back to back rs485-----rs485-----rs485------Termination
|Node 10
|
|
|
Termination


HI

I am using the above schematic to drive 10 display boards placed at 100mt from each other (node1 - node10)driven from PC. Each boards have 20-32 lines, i am using the above configuration . It works fine but some time there is problem in the line garbage data are recieved at the display. I have througly followed the " ten ways to bulletproof RS 485" app. note. i am using 8052 for at each line control section where i use to recieve data from rs 485(75176), the interconnect media is CAT-5 cable. Can any one suggest any improvements

Thanks
Santanu Roy