公开(公告)号：US20140169429A1

公开(公告)日：2014-06-19

申请号：US13713309

申请日：2012-12-13

Applicant: Adee O. Ran

Inventor： Adee O. Ran

IPC: H04L1/24

CPC classification number: H04B17/104 ,  G01R29/027 ,  G01R31/31709 ,  H04L1/205 ,  H04L1/24 ,  H04L1/248 ,  H04L27/04

Abstract: Methods and test equipment for measuring jitter in a Pulse Amplitude Modulated (PAM) transmitter. Under one procedure, a first two-level PAM signal test pattern is used to measure clock-related jitter separated into random and deterministic components, while a second two-level PAM signal test pattern is used to measure oven-odd jitter (EOJ). Under another procedure, A four-level PAM signal test pattern is used to measure jitter-induced noise using distortion analysis. Test equipment are also disclosed for implementing various aspects of the test methods.

Abstract translation: 用于测量脉冲幅度调制（PAM）发射机抖动的方法和测试设备。 在一个程序下，使用第一个两级PAM信号测试模式来测量分为随机和确定性分量的时钟相关抖动，而使用第二个两级PAM信号测试模式来测量烤箱奇数抖动（EOJ）。 在另一个程序中，使用四电平PAM信号测试模式来测量使用失真分析的抖动引起的噪声。 还公开了用于实施测试方法的各个方面的测试设备。

公开(公告)号：US20140146833A1

公开(公告)日：2014-05-29

申请号：US13870186

申请日：2013-04-25

Applicant: Kent C. Lusted ,  Adee O. Ran

Inventor： Kent C. Lusted ,  Adee O. Ran

IPC: H04L12/24

CPC classification number: H04L12/413 ,  H04L7/10

Abstract: Methods, apparatus and systems for implementing Physical Media Attachment (PMA) alignment and rapid transition from a link training mode to a data mode for next-generation high-speed Ethernet links including a 100 Gbps Ethernet link. Training frames are transmitted between first and second Ethernet interfaces on opposing ends of the link in a pair-wise manner, with a first training frame being sent from a first Ethernet interface and a second training frame being returned from the second Ethernet interface. The training frames have a length that is the same as the length of Physical Media Attachment (PMA) frames, and the returned training frames include receiver readiness status indicia identifying a readiness status of a local receiver port, and countdown data. The readiness status indicia, and countdown data are employed to facilitate a rapid transition from the link training mode to the data mode.

Abstract translation: 实现物理媒体附件（PMA）对齐的方法，装置和系统以及从链路训练模式到包括100Gbps以太网链路的下一代高速以太网链路的数据模式的快速转换。 训练帧以成对的方式在链路的相对端上的第一和第二以太网接口之间传输，第一训练帧从第一以太网接口发送，第二训练帧从第二以太接口返回。 训练帧的长度与物理媒体附件（PMA）帧的长度相同，返回的训练帧包括识别本地接收机端口准备状态的接收器准备状态标志和倒计时数据。 采用准备状态标记和倒计时数据来促进从链接训练模式到数据模式的快速转换。