Accelerated measurement of bit error ratio

摘要

The bit error ratio of digital data transmission equipment is measured by applying a bit error ratio test data stream to a signal path through the equipment, and coupling an interfering signal source into the signal path. Measurements of the bit error ratio of the equipment are acquired for different levels of interfering signal, and the gain error introduced by coupling the interfering signal source into the signal path is determined. The bit error ratio of the equipment in the absence of the interfering signal is estimated from the measurements of the bit error ratio and the gain error.