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Bit Error Rate Tester

An essential part of testing transmission systems is the bit error rate test. Often using complex and expensive equipment, bit error rate testing can be time consuming and costly. BBN International announces the Luceo X-BERT bit error rate testing system. As a modular system, only the components required for any particular measurement need be used. The system is designed for ease of use and high value for money.
X-BERT
  • 1550nm EAM based laser transmitter and optical receiver
  • PRBS 223-1 and 231-1 pattern
  • Automatic sample point adjustment
  • Graphical user interface for simple operation
  • LabView® drivers for embedding into manufacturing equipment
  • 9.9 ~ 11.1Gbps for SONET, FC, Ethernet, FEC applications
  • Small size: 19"/2 housing
  • Extremely low fan noise
  • Two BERTs in one housing possible
 
Graphical User Interface Using LabView® Drivers
 
The X-BERT is designed to measure the bite error rate (BER) of a complete transceiver module or just the transmitters like lasers or receivers operating at data rates between 9.9 and 11.1Gbps (optionally down to 8Gbps).

There are separate slots for optical and electrical bit error rate testers. Each slot offers a transmit and a receive port. An internal pseudo random binary sequence (PRBS) pattern generator and error detector computes the bit error rate. The applied reference clock defines the bit rate. The measurement result can be read out via serial interface and be displayed on a graphical user interface (GUI).

The externally provided reference clock can be in the 10G or 622M range so, the user can set the operating data rate according to the standard under test (Ethernet, Sonet, FEC etc.)

Also, the system can run with the internal clock source on a fixed frequency chosen by the customer. For triggering purposes a correlated 10G clock can be provided at the front panel.

The sample point is adjusted automatically and relieves the user from re-adjustments when propagation delay time of the device under test (DUT) changes to variations in the signal condition.
   
Optical BERT Module Electrical BERT Module
  • Optical transmitter (SC or FC connector)
  • Optical receiver (SC or FC connector)
  • PRBS 23/31 pattern generator & error detector
  • Reference clock input (single ended)
  • Reference clock output buffer (differential)
  • Electrical transmitter (SMA connector)
  • Electrical receiver (SMA connector)
  • PRBS 23/31 pattern generator & error detector
  • Reference clock input (single ended)
  • Reference clock output buffer (differential)

 

Optical eye diagram

Electrical eye diagram with Sonet mask
   
Other modules are available such as clock drivers and clock prescaler.


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Clay House, Harnage, Shropshire, SY5 6EF   Tel: 0845 3655061,   Fax: 07005 982624,   Email: info@bbnint.co.uk