Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Need to inject errors into a serial transmission line

Need to inject errors into a serial transmission line

Need to inject errors into a serial transmission line

I need to inject some errors into a serial line to test PPP LQM on some Ciscos I have. I thought I might be able to place some neodymium magnets on both sides and cause some issues, but the interfaces did not record any.

I need the method to be cheap and and non-damaging to cables. Does anyone have any ideas?

RE: Need to inject errors into a serial transmission line

Adtech (now part of Spirent) makes very nice transmission line error emulators.

You can purchase the appropriate interface as needed (e.g. RS232, V.35, DS1, etc).


If you watch Ebay you can eventually find a good deal on one (typically the SX-12).

Other than that I'd suggest inserting a *very* long cable, or an attentuator, in line with the cable you want to interfere with.

Good luck

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close