The MP1800 series is made up of signal quality analyzers, or highly expendable, plug-in bit error rate testers (BERT) with a modular design and a test rate from 0.1 Gbit/s to 32.1 Gbit/s, or 56 Gbit/s with external MUX/DEMUX. The built-in Pulse Pattern Generator (PPG) module along with the Error Detector (ED) module offers customers a flexible cost-effective solution for performing measurements at the ideal bit error rate with the highest input sensitivity available.