DSC: Error in received string ... any troubleshooting suggestions?

[dwengrovitz]

I've been seeing a few error messages in the Nodelink web display over the last few months, such as:

          DSC: Error in received string - checksum failed (90100032  Date     Time DEC 1518 9:09a) [dsc1]

Not sure if this is a problem with the DSC (my connection is via IT-100/PCS401) or with the serial to ethernet adapter used to connect the DSC to the ISY/network, or something else.  Thought I'd ask the experts here for input.  Anyone seen anything like this before?  Any suggestions on troubleshooting?  

  

[io_guy]

Usually related to serial cable length vs. baud rate.

Is it only ever on the date string?

[dwengrovitz]

I don't have a lengthy log to go back and review so I can't say for sure.  But, I don't recall seeing it reference other elements. I'll have to watch it for a while to be sure. 

Is it worth swapping out the serial or ethernet cables (that's probably a lower cost option than replacing the DSC board or the serial to ethernet adapter)? 

[io_guy]

I wouldn't change anything until you quantify the frequency of the errors.  If it's a few date errors every now and then what odds.  

If i was upgrading I'd ditch the old guy and move to an EVL4.  

[dwengrovitz]

Good suggestions ... on both fronts.  I'll continue to watch things for a while and if it looks like I need to change out some equipment it's probably more effective (and cheaper) to go with the EVL4.  Thanks for the assistance!