衰减器

Air gap attenuators are ideal for use with any LED systems and many laser systems.

空隙衰减器是LED系统和很多激光系统的理想工具。

This paper introduces the principal theory , process and test technology of variable optical attenuator.

本文分析了集成化可变光学衰减器的工作原理、工艺制作和测试技术。

This paper presents two kinds of optical controlled attenuator and phaser used in millimeter-wave band.

本文介绍了两种光控介质波导衰减器和移相器。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

The products include: optical fiber connector , adopter, attenuation, single-mode converter, cramping tool, network cable tester, single port, patch cord, modular plug and distribution cabinet, etc.

产品主要有光纤跳线，适配器，衰减器，光纤连接器，转换器，光缆交接箱，光缆配线箱等等。

Winshow Electronics provides a wide variety of fine products as follows: series of field type amplifier housings, optical receiver housings, taps, splitters, wall outlets, plastic weather-proof hoods, FL connecters, 5-1000MHZ integrative multi branch splitters, field type over load splitters, etc.

公司主要产品包括：系列野外放大器外壳、光接收机外壳、一体化分支分配器外壳、用户终端外壳、FL接插件、5-1000MHZ一体化分支分配器、5－2400 MHZ卫星分配器、野外型过流分支器、衰减器、均衡器和放大器配件等。

Company's main product: optical cable, optical transceiver, video frequency/audio frequency optical transceiver, optical fiber distribution frames, optical cable box, optical cable joint box, fiber optical termination box, optical fiber bouncing lining, adapter, optical attenuator, optical splitter, etc.

公司主要产品有：光缆、光纤收发器、视音频光端机、光纤配线架、光缆交接箱、光缆接续盒、光缆终端盒、单模/多模光纤跳线、适配器、光衰减器等。

You will need cables, connectors, and possibly coaxial splitters and attenuators, but these are all application-specific and you are likely to have them on your shelf anyway.

你也需要线缆，接头，同轴功分器，衰减器，但这些是所有应用规定的。

In order to duplicate these performance tests, the following precautions should be observed:-The mixer should be presented with good return losses at all ports by using isolators or attenuators.

为了重复这些性能测试中，应遵守以下预防措施：-的搅拌机应在隔离器或衰减器使用的所有端口的损失提出良好的回报。

The company's main products: fiber optic connectors, adapters, attenuators, couplers and other passive components; fiber optic cable connector boxes,cable, fiber optic distribution frame, fiber optic wiring products such as the transfer box; Optical Power Meter and other communication equipment.

公司的主导产品：光纤连接器、适配器、衰减器、耦合器等无源器件；光缆接头盒、光缆终端盒、光纤配线架、光缆交接箱等配线产品；光功率计等通信仪器。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。