News & Information
Traditional method of transmitting and recording sound and pictures where the signal varies smoothly and continuously over time.
The effects seen on a TV screen caused by errors in a digital signal (See "
Where the information or data transmission speeds for the forward and return channels differ (e.g. high speed for the forward channel and low for return).
Signal beside the television picture which contains the audio information. Either TV related sound or radio programming.
Angle between true north and a particular satellite. Can be measured with a compass.
An electronic circuit that allows a selected band of frequencies to pass unattenuated. All frequencies that lie outside of the passband are severely attenuated. Bandpass filters are often used on C-Band satellite systems between the LNB and feedhorn to eliminate nearby telephone microwave and airport radar and altimeter interference.
This is the range of signal frequencies that can be carried on a communications channel. The capacity of a channel is measured in cycles per second, or Hertz (Hz), between the highest and lowest frequencies. While this indicates the channel's information-bearing capacity, it is more commonly expressed as "bits per second". Bandwidth varies according to the sort and method of transmission.
Bit Error Rate:
Denotes the quality of a received demodulated digital signal. The lower the rate, the better the signal. Example: a BER of 10 -4 means one error in every 10,000 bits.
Transmission speed of digital information, expressed in bits per second.
Abbreviation for binary digit.
A pre-defined area where particular programming (often sports or special events) will not be available, usually because of contractual agreements.
Sequence or group of eight bits. 1 byte = 8 bits; 1 Kbyte = 1,024 bytes; 1Mbyte = 1,024 Kbytes; 1Gbyte = 1,024 Mbytes.
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