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Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

Prakash123

Jun 23, 2016
25
Joined
Jun 23, 2016
Messages
25
The only thing I would question at this point is the choice of ULN2003 Darlington transistor drivers for use as data receivers. Better would be something with hysteresis on the input transition levels, perhaps this quad CMOS receiver.
I would like forum because of getting new idea and I will use DS14C89A in this project.

Your mosfet drivers should provide adequate signal level for reception at the end of ten meters of twisted-pair cable.
I better to concentrate on rectifying problems in existing system.
 

hevans1944

Hop - AC8NS
Jun 21, 2012
4,781
Joined
Jun 21, 2012
Messages
4,781
I better to concentrate on rectifying problems in existing system.
If by rectifying you mean correcting problems in existing system, that is what we here at Electronics Point have been trying to tell you. But you have not responded with anything useful. In particular, you have not stated whether or not you have an oscilloscope available that you can use to perform signal integrity tests. How can you expect to correct any problems without knowing the exact nature of those problems, which oscilloscope wave forms will surely reveal?

A shotgun approach, where you just throw various parts at the project hoping something will work, is not a good way to design or troubleshoot anything, even if you have deep pockets full of cash and a lot of time to waste exploring the wrong paths.
 
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