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越来越多的客户需要数据中心提供更大的网络带宽。脉冲幅度调制（PAM）属于多电平信令制式，可以帮助数据中心满足这一需求。
用于 Infiniium 实时示波器的 Keysight N6473A OIF-CEI 4.0 一致性测试应用软件可以精确和快速地表征 PAM4 和 NRZ 电信号，满足这一标准对 PAM 和 NRZ 测量的要求。
行业标准正在不断演进之中，按照其要求来执行 PAM4 和 NRZ 测量，可能非常困难，充满了挑战性。使用 Keysight N6473A OIF-CEI 4.0 一致性测试应用软件和 Z 系列实时示波器，您将可以大幅节省 PAM4 测量时间并最大限度提高测量精度。此工具使您可以根据 OIF-CEI 4.0 标准中详细说明的测量要求，对 4 电平脉冲幅度调制（PAM4）和 NRZ 设计进行测量。
按照 OIF-CEI 56G 的多项条款，包括 CEI-56G-VSR、CEI-56G-MR 和 CEI-56G-LR 等条款，执行 100 多项 PAM4 和 NRZ 测试，包括：
