catv modulator

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FTTH Excellent Solution

services, VoIP services, IPTV, CATV Video services and L2VPN services, effectively supporting broadcast and interactive vod/iptv/sdtv/ High-bandwidth services, such as HDTV, have access requirements and provide a good QoS and security guarantee. ZTE can also integrated services access network Msan and integrated services access Gateway MSAG and other products to provide customers with a full range of FTTx solutions. The main features and advantages

Communication algorithm nine: 4FSK modulation and demodulation simulation link

A. 4FSK principleDMR System, digital trunking communication system. The DMR protocol adopts a modulation mode of 4FSK, which is a constant envelope modulation, which transmits 2,400 symbols per second and each symbol carries two bits of information. The maximum frequency offset d is defined as follows:d = 3h/2t,h represents the frequency offset factor for each modulation, 0.6. The t indicates the symbol period, which is 1/2400. d=2160. The 4FSK modulator

Linux Pen Test __linux

khz to khz, are supported. The Adcsigma-delta modulator features Third-order multibit architecture with up to90-dba signal-to-noise ratio (SNR) at AU Dio sampling rates up to-kHz, Enablinghigh-fidelity audio recording in a compact, power-saving design. The Dacsigma-delta modulator features a second-order multibit architecture with up TO100-DBA SNR at Audio sampling u P to-kHz, enabling high-quality digital

Microwave communication Technology

microwave relay communication long-distance microwave communication trunk can be transmitted through dozens of times to thousands of km can still maintain a high quality of communication. Microwave station equipment including antenna, receiver transmitter, modulator, multiplexing equipment and power equipment, automatic control equipment. In order to gather the wave to become beam, sent to the distance, generally using parabolic antenna, its focus c

Progress of optoelectronic devices in automatic switched optical networks

to the high speed, flexibility and reliability of the device, and ultimately to the low cost, which makes the current new principles, new structures and new features of the device continue to emerge. According to the function, the optical electronic devices in the optical network can be divided into two kinds: active devices and passive devices. Active devices are mainly responsible for the production, amplification and reception of optical signals, complete the signal of optical/electrical,

Electric Game Summary (ii)--AD chip summary of the AD7715

, filter control logic and calibration control logic are in the reset state, while the analog modulator is also controlled in the reset state. When at low level, the modulator and the filter begin to process the data and produce a valid word within the 3x (1/output update rate) time (i.e. the filter's settling time). The FSYNC does not affect the digital interface and does not reset the Drdy ' output (if it

Terminology in Computer science

Hardware (Hardware)Software (software)Buses (bus)CPU (central processing UNIT,CPU)Control UnitArithmetic/logic unit (arithmetic/logic unit)Bit (bite)BYTE (byte)Encoding Mode (Schema)Memory is also known as Random access memory (random-access Memory,ram)Drives (drive)HDD (hard disk)Universal Serial Line (Universal Serial Bus,usb)USB flash drives (flash drive)Display (monitor)Screen resolution (resolution)Dial-up modem (modulator/demodulator,

Chinese Translation of saber Component Library

├ ── Technology physical quantity Sampled-sampled data control block Sampling Discrete Control Unit (z domain) ├ ── Z domain Source: Z domain signal source ├ ── Algebraic: Z-domain arithmetic operation Linear-linear combination linear synthesis point ├ ── Adder divider, subtractor divider, and multiplier Multiplier ├ ── Amplifier Amplifier Comparator ├-Modulator and Delta Modulator ├ ── Differen

Sharing the best free resources in March 2015 to designers and free resources in 2015

licensed under Creative Commons 4.0 License.10. Boom Booom is a Chrome extension that improves your Dribbble browsing experience. It adds key features like bigger images in HQ and the ability to add things to your bucket directly from the feed.11. Transformicons Transformicons is a set of transforming, animated icons. There are menu icons, grid icons, add/remove icons, loaders, and more.12. Cymbolism Cymbolism is a color tool that enables you to see what colors are associated with different com

Ftto+lan wiring solution for new high-rise office building

cabling technology for high-rise office building network integrated design. Technical features based on PON technology The PON system consists of optical circuit terminal (OLT), Optical Network Unit (ONU) and optical distribution network (ODN), which uses topological structures with dots to many points. Passive refers to all of the passive devices and optical fibers from Olt to ONU, and does not require any power source equipment. Pon All Optical Network has three networks in one business cap

Network engineer software SolarWinds Tools function Introduction

a specified routerRouter Password Decrypt for decrypting Cisco's Type 7 passwordRemote TCP Session Reset is used to display the activated connection on each deviceSNMP Brute Force Attack is used to log the router's login passwordSNMP Dictionary Attack used for dictionary to guess the router's login passwordEdit dictionaries for editing dictionariesCATV Tools BarCATV Subscriber modem Details for querying the current working state of the CATV modemCMTS

Analysis and Research on Shield Attenuation of four Shielded Cables

In a two-way cable TV system, to make reverse transmission work normally, the confluence noise must be reduced. Most of the confluence noise is formed by a space electromagnetic interference string into the reverse system. In a Bidirectional CATV system, cables are one of the most vulnerable components to interference. In order to make the reverse system work normally, four Shielded Cables with High attenuation Shielding must be used. This paper intro

Application of the access network system in cable TV network Backhaul

branch network structure, the noise and intrusion interference from the user and the network are at the front end of the cable network, that is, the roots of the network are converged together. For the backhaul channel, the noise components produced by each amplifier are all gathered at the front end of the access network system. This noise component is proportional to the size of the access network system, it is proportional to the number of upstream amplifiers in the same tree network. In add

Principles and Development of Optical Fiber Communication

the development of optical fiber communication from basic to commercial application. Since then, the optical fiber communication technology has continued to develop: from multi-mode to single-mode, and from 0.85um to 1.31 and 1.55um, the transmission rate has increased from dozens to dozens. On the other hand, with the development of technology and the formation of a large-scale industry, the price of optical fiber is constantly decreasing and the application scope is constantly expanding: from

The basic principle of network system structure and design (II.)

~7mbps. Users can select as neededUpstream and downstream rates.(2) Basic concept of HFC for fiber coaxial cable hybrid networkThe basic structure of HFC in fiber coaxial cable hybrid networkFrom the user access point of view, optical fiber coaxial cable hybrid network (HYBRIDFIBERCOAX,HFC) is a two-way transformation of the CATV network, is the userAn important way to access the Internet via cable TV broadband.Classification of cable modem Cablemodem

Radio/TV network is not waiting for FTTH construction (1)

+ C-DOCSIS: national standard technology, for China Radio and Television Network, compatible with the original CMTS system. • FTTH: it is still pilot and the CATV access method is unclear. In the FTTH solution, CATV access is divided into three types: Single-fiber three-wave, dual-Fiber Three-wave, and fiber-optic Coaxial Dual-household. Because a single-fiber three-wave adds one WDM module per household,

Type and application range of fiber optic jumper interface

. "UPC" is less than the "PC", generally used for equipment with special needs, some foreign manufacturers ODF frame internal jump fiber is FC/UPC, mainly for the improvement of ODF equipment own indicators. In addition, the "APC" model is used in radio and television and early CATV, the tail fiber head adopts the end face with dip angle, which can improve the quality of TV signal, mainly because the TV signal is analog light modulation, when the

Factory wiring Scheme

impact, this is the basic requirements of optical fiber connectors. To a certain extent, optical fiber connectors also affect the reliability and performance of optical transmission systems. Product dimensional precision, repeatability, interchangeability good, reliable and stable. Excellent temperature stability, can be used in optical fiber communication systems, optical data transmission, LAN, fiber optic sensors and optical fiber CATV. Fib

Description and Application of Broadband Access Technology Optical Fiber Access Technology

and B-I iSDN services can meet the common requirements of various telecom services and full service networks (FSN. APON represents the latest development direction of broadband access technology. Currently, it has been applied in the UK, Germany, and so on. It is considered as a better method to implement FTTC and FTTH. The advantage of APON is that it can save the cost of optical fiber and optical equipment, and realize the network transmission between the broadband data service and the

Broadband Wireless Access Technology Based on DOCSIS Protocol

Broadband wireless access technology is worth learning a lot. Here we mainly introduce the DOCSIS-based broadband wireless access technology, from the DOCSIS Protocol release to the current development trend, many related equipment manufacturers use DOCSIS Protocol in their 3.5 GHz MMDS products because DOCSIS uses many mature technologies to support IP services well, it has adapted to the current technological development trend, and has adopted a large number of Integrated Circuits Used in Cabl

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