keysight originated from Hewlett-Packard, the first high-tech company in Silicon Valley. 1999 Hewlett-Packard's Electronic Measurement Group was reorganized to become Agilent Technologies, and in 2014 it was spun off and listed again under the name Yestech, becoming a high-tech multinational company 100% focused on electronic test and measurement.

The 34970A Agilent Data Acquisition/Datalogger Switching Unit consists of a 3-slot mainframe and a built-in 6 1/2-bit digital multimeter. Each channel can be individually configured to measure one of 11 different functions, thus neither increasing cost nor eliminating the need for complex signal conditioning accessories.

High performance and versatility are two trends in the development of oscilloscopes. Examples reflecting high performance are Agilent Technologies' 63GHz analog bandwidth, 160GSa/s sampling real-time oscilloscope with both low noise and high input dynamic range, and American Liko announced a 65GHz analog bandwidth, 160GS/s real-time sampling rate, 4~40 channels of any channel oscilloscope system, which significantly optimizes the channel selectivity of the oscilloscope.

An oscilloscope is an electronic test and measurement instrument that displays electrical signals graphically in the form of an X-Y graph. Here, the horizontal (X) represents time and the vertical (Y) axis represents the magnitude of the voltage. Thus, an oscilloscope essentially shows a graph of how the voltage of an electrical signal varies over time. Hence, the early oscilloscopes were called oscilloscopes.

Theoretically speaking, an optical fiber can simultaneously transmit 10 billion voice paths, and the current test of simultaneous transmission of 500,000 voice paths has been successful, thousands or even hundreds of thousands of times higher than the traditional coaxial cable, microwave, etc.. Optical fiber has a very low attenuation coefficient, with the appropriate optical transmission, optical receiving equipment, optical amplifiers, forward error correction and RZ code modulation technology, etc., can make its relay distance of thousands of kilometers or more, while the traditional cable can only transmit 1.5km, microwave 50km, simply can not be compared with it.

Fiber optics, the science of transmitting data, voice and images by means of light through thin, transparent optical fibers. In the field of telecommunications, fiber optic technology has practically replaced copper wires in long distance telephone lines, which are used to connect computers in local area networks. Fiber optics is also the basis for fiber optic endoscopes used to examine the inside of the body (endoscopy) or to examine the inside of manufactured structural products.

Optical modules must have a standardized operation method in the application, and any irregular action may cause hidden damage or permanent failure. The main causes of optical module failure are deterioration of optical module performance due to ESD damage, and optical link failure due to optical port contamination and damage.

光模块知识 | 如何看懂光模块的命名?了解光模块命名规则就能读懂厂商光模块产品名称所包含的全部信息。本文以通用的命名规则进行分解说明。

Optical Module Knowledge | What are the common types of optical modules? In order to meet the demand of various transmission rates, different rates of optical modules are produced: 400GE optical module, 100GE optical module, 40GE optical module, 25GE optical module, 10GE optical module, GE optical module, FE optical module, etc.