Contact Us   
Your Position: Home > News > Industry News

What is bandwidth

2015/9/18 11:35:32      view:

In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measurement of bit-rate of available or consumed data communication resources expressed in bits per second or multiples of it (bit/s, kbit/s, Mbit/s, Gbit/s, etc.).

Note that in textbooks on signal processing, wireless communications, modem data transmission, digital communications, electronics, etc., the word 'bandwidth' is used to refer to analog signal bandwidth measured in hertz. The connection is that according to Hartley's law, the digital data rate limit (or channel capacity) of a physical communication link is proportional to its bandwidth in hertz.

Bandwidth sometimes defines the net bit rate (aka. peak bit rate, information rate, or physical layer useful bit rate), channel capacity, or the maximum throughput of a logical or physical communication path in a digital communication system. For example, bandwidth tests measure the maximum throughput of a computer network. The reason for this usage is that according to Hartley's law, the maximum data rate of a physical communication link is proportional to its bandwidth in hertz, which is sometimes called frequency bandwidth, spectral bandwidth, RF bandwidth, signal bandwidth or analog bandwidth.

 

Where to buy the CAM CARD

CAM Common Interface Modules are the adapters where to insert the SMART CARD from the PAY-TV Operator  same as inserted in the standard set top box receivers.
Depending from the Operator, the required CAM Module could be NAGRA VISION, NDS VIDEOGUARD, CONAX, IRDETO, or others.
CAM modules can be bought directly from your PAY-TV operator, or simply on-line searching for “ name of standard cam module”