Color TV system
At present, there are three types of color TV systems in the world: NTSC system, PAL system and SECAM system.
(1) NTSC
The NTSC (NaTIonal Television Systems Committee) color television system is a color television broadcasting st…
Hotspots and development trends of wireless communication technology
[Abstract] Due to the contradiction between the bandwidth requirements of wireless communication networks and the insufficient bandwidth of mobile networks, the contradiction between the geogr…
GSM system-network maintenance optimization parameter extraction
Optimize some parameters, and on the basis of research on the signaling process, give the parameter extraction method. The extraction of parameters is realized on the basis of the signal acquisiti…
What is the MSN college group?
The MSN college cluster is an interactive platform for freshmen. As long as you register as an MSN user, you can choose to join the MSN college cluster and meet your college classmates. In addition, you can create your own group. …
An AGC circuit with simple circuit and excellent performance
The AGC circuit of the receiver in the short-wave digital communication system is realized by the AD603 variable gain amplifier combined with a simple AGC control circuit. It has a high gain, a dynami…
Wireless LAN sniffing technology and prevention strategy
The wireless local area network (WLAN) has been more and more widely used in many fields because of its advantages of convenient installation and flexible networking, but because the data it transmits use…
Repeaters and hubs
1. Repeater
A repeater (RP repeater) is a device that connects network lines, and is often used for two-way forwarding of physical signals between two network nodes. The repeater is the simplest network interconnection device. It mainly …
DVB standard detailed introduction
1. Development principles and processes
The DVB standard is published by the European Telecommunications Standards Association (ETSI, European TelecommunicaTIons Standards), and there is almost daily collaboration between…
ã€Introduction】
When we use network cards, we often encounter various problems. Here I will summarize various errors and hope to help everyone.
When we use network cards, we often encounter various problems. Here I will summarize various errors…
ADSL Modem routing function details and application skills introduction
At present, most ADSL Modems support multiple network protocols and have static routing functions, which can be regarded as a complete router. I often encounter users who buy ADSL Modem, sp…
Analysis of common failures of network equipment
1. Improper wire selection causes network instability, failure analysis and elimination.
The following are the faults that the author has personally experienced. Although the solution is very simple, I st…