Direct modulator driving C-BERT

Key Features

  • High voltage output from 0.5 to 2.6V
  • Cross point adjustment 40% to 75%
  • Internal bias network for individual modulator biasing
  • 7, 9, 15, 23 and 31 PRBS length and user defined pattern
  • User interface on standard web browser via Ethernet
  • PPG & ED in one space saving 1U 19" box


  • EML / DML direct drive
  • Four channel TOSA with single-ended inputs
  • Mach-Zehnder-Modulator with low drive voltage Vπ
  • Reseach, Development, Production Test

A four channel wide direct modulator driving 100G BERT

The C-BERT 2830-4 is a complete bit error rate tester dedicated for 100G Ethernet driving EMLs, VCSEL and optical modulators direct. Four independent high voltage output channels eliminate the need of external amplifiers and Bias-T circuits. The cross point alignment feature enable optimization of the optical output. The BERT eye scan reveals low-probability events and shows the true performance of the DUT to aid troubleshooting. The OS independent GUI is easy to install and enable remote control from everywhere. The compact C-BERT 2830-4 is a powerful, time saving and cost efficient solution for 100G Ethernet TOSA testing.
C-BERT MI-PE2830-4 Product sheet_rev03