200G Error Meter Easily Switches Between NRZ And PAM4 Code Types

200G Error Meter Easily Switches Between NRZ And PAM4 Code Types

PAM4 (four-level pulse amplitude modulation), as an emerging high-speed serial bus encoding mode, is present in almost all standards over 50Gbps. The 200G PAM4 error tester is designed for PAM4 signal testing at 200G rates, with high performance, high precision and high flexibility.

Main function
Code switching: The 200G PAM4 error meter can easily switch between NRZ (non-return-to-zero code) and PAM4 code without any peripheral accessories to meet a variety of test needs.

Signal adjustment: It has the functions of output amplitude adjustment and PAM4 signal level proportional adjustment, which can flexibly adjust signal parameters according to test requirements.

Error detection: It can send digital signals and monitor the sent signals, accurately record the number and type of error codes, and provide detailed error statistics.

Advanced analysis: Support for vertical and horizontal eye scanning, as well as SNR (signal-to-noise ratio) and bar chart analysis, providing powerful support for in-depth analysis of signal quality.

Technical specification
Data rate: PAM4 signal testing up to 200G is supported, some models may support higher rates.

Number of channels: Usually has multiple channels, support the simultaneous testing of multiple signals, improve test efficiency.

Output amplitude: The output amplitude range is usually between 250mV and 1000mV, which can be adjusted according to test requirements.

Pre-weight and jitter: Supports the pre-weight function and the adjustment of parameters such as random jitter to simulate the real communication environment.

Encoding and decoding: PAM4 encoding and corresponding decoding functions are supported, while KR4 and extended KP4 FEC (forward error correction) encoding may be supported.