How does this work?

Thread Starter

YazanJuve

Joined Dec 13, 2009
25
Hello all,

I have a small question...the project i am doing is a digital meter that needs calibration through serial RS232

i want to know how should i connect (RXD,TXD) which are shown in the 2 figures...fig.1 is the output of the serial and fig.2 is the input (as shown in the arrows direction)

thanks :)
 

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RiJoRI

Joined Aug 15, 2007
536
The RxD and TxD signals should be cross-connected. That is, RxD of Device A goes to TxD of device B, and RxD of Device B goes to TxD of device A.

--Rich
 
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