FEC Codeword Symbol Error Distribution

 

 

• Verify/Monitor PAM4 Signal Integrity

  • Codeword Symbol Error distribution

• PAM4 always has pre-FEC Errors

  • Differentiate between Correctable and Uncorrectable Errors

  • Identify how hard FEC is working

  • Benchmark/Compare transceiver preformances

  • Beyond 15 Symbol Errors per Codeword, the errors become Uncorrectable and start affecting the payload

• Zero post-FEC Errors

  • Client/Test traffic payload must remain Error Free (no uncorrectable errors)