BERT or bit error rate test is a testing method for digital communication circuits that uses predetermined stress patterns consisting of a sequence of logical ones and zeros generated by a test pattern generator.

Keysight’s bit error ratio test (BERT) system enables the most accurate physical-layer design verification of high-speed communication and multi-gigabit digital interfaces. Our expert-level support will help you select the high-performance hardware, control software, receiver test, and automation tools needed to help you master your design.

Bit Error Rate (BER) testing is a crucial aspect of evaluating the performance of digital communication systems. It involves measuring the rate at which errors occur in a transmitted bitstream compared to the expected bitstream at the receiver end.

To perform a bit error rate test, a pre-defined data stream is sent through a network link input, then the output of the link at the receiving end is analyzed to assess the number of errors detected versus the number of bits transmitted over a given time frame.

Bit Error Ratio Tester – BERT, is a electronic test equipment used to test the quality of signal transmission of single components or complete systems. It is often used for out-of-service testing as described above.

比特差错率 （即 误码率，英語： bit error ratio，BER）是一段时间内差错比特的数量除以传输的总比特数。 BER是一种无单位的性能指标，通常以 百分比 的形式表示。

与比特误码率密切相关的是分组差错率 (PER)。 由于每个数据包本质上是位的集合，如果 BER 为所有乘客确定了相同的比率，那么 PER 类似于未到达目的地的公共汽车的比率。 测量丢包是至关重要的，因为数据包的大量丢失会导致服务变慢或网络中断。

2023年5月23日 · The Bit Error Rate (BER) is the number of bit errors per unit time divided by the total number of transferred bits during a studied time interval. BER is a unitless performance measure, often expressed as a percentage.

One of the most important ways to determine the quality of a digital transmission system is to measure its Bit Error Ratio (BER). BER is calculated by comparing the transmitted sequence of bits to the received bits and then counting the number of errors.

A BERT includes a pattern generator and an error detector and is used to perform design verification, characterization, compliance, and manufacturing test of high-speed communication ports for ASICs, components, modules, and line-cards in the semiconductor, computer, storage, and communication industries.