Highly flexible BER test system for serial and parallel testing over a wide range of interfaces from TTL to optical. Addresses system, sub-system and component testing during development and compliance verification in IC, cable, satellite, cellular, terrestrial, CATV, digital TV and other physical layer test markets.
Broadband Physical Layer Transmission Test Issues
As demand grows for high-speed video, audio and data transmission, so grows the job of today's communications engineer. More bits through limited bandwidth in a noisy channel means using creative engineering to guarantee fast, error-free data transmission.
Typically, auxiliary signaling is needed to accompany clock and data during testing to control data flow and flag valid data frames. These additional signals were not designed into traditional bit error rate testers in use today. Frustrations also arise with test data formatting. Because error correction schemes are in use, data is sent in transport frames with header and error correction bytes. To be useful, modern day data generators and error analyzers must provide more than simple pseudo-random test sequences.
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