The MP8931A Bit Error Rate Tester has digital broadcast interfaces (DVB-ASI, DVB-SPI) in addition to the general bit-error-rate test function. It is suitable for quality evaluation at device production/construction and for maintenance after installation. Complicated searching for input thresholds or phase adjustments is simplified with the touch of. The M8000 Series Bit Error Ratio Tester is the highly integrated BERT test solution for physical layer characterization, validation, and compliance testing. OPTELLENT's test and measurement equipment are designed to offer unprecedented low-cost of ownership and ease of use. All of our. Electrical BER tester supporting NRZ and PAM4 coding, with advanced FEC tools and with testing capabilities up to 800G.