Printer FriendlyEmail Article Link

Spirent TestCenter: What is the auto tune feature and how to configure it?

Environment/Versions
 
  • 5.18
  • L1 Services
  • Auto tune
  • Emphasis tuning
  • New cables
  • Optical Transceivers
  • No link
Answer

Auto tune is a new feature introduced in 5.18 release (Jan 2021) for L1 Services, and it is via the command sequencer, this is intended to address most of the problems seen on the field related to new cables and/or optical transceivers that get plugged into our equipment and we have no link.

Usually without this tool, the process to finding an optimal emphasis values is painful and often require engineering support, so this feature will overcome this issue by finding the correct emphasis values automatically.


Prerequisites
 
  1. Make sure TestCenterIQ is enabled under TestCenter IQ Settings
  2. Set the ports you want to run the Auto Tune feature on to STC-L1 Mode Performance Mode and hit "Apply"
 

Procedure
 
  1. Open Command Sequencer, either under "Sequencer" button at the top tool bar (almost all the way to the right), or under "Command Sequencer" Tab at the top right of STC GUI
  2. Click on "Edit Sequence.." and find "L1 Transceiver Auto Tune Command" under L1Test section, then just add it
    • enlightenedEach command will tune a port pair, you can add as much as commands needed depending on how many port pairs you want to tune

 
  1. Right click on the command, select "Edit sequence" and select the port pair you want to tune and click OK
 
  1. Then start the sequence
    • enlightenedEach command would take ~10 minutes to complete
 
  1. Once the sequencer finishes, you will see a log messages indicating the Emphasis values configured and you will see the ports UP


 

Product : Spirent TestCenter