Appendix - Novra S300 User Manual

APPENDIX

Terms, Definitions, and Other Tidbits of Information
Crossover Cable A crossover cable is a cable that is used to connect two computers by reversing, or
crossing over, the cable pin contacts. This eliminates the need to use a hub when
connecting two PCs. It is also referred to as a "Null Modem" cable.
Coax Cable Looks like this:
The coaxial cable is most commonly used for Cable TV feeds inside a house or
apartment. This form of cable allows the high frequencies of TV, and Satellite type
signals to move from one place to another with a minimal amount signal loss.
DVB Digital Video Broadcasting (DVB) is a set of standards that define digital broadcasting
using satellite, cable, and terrestrial infrastructures.
FEC Forward Error Correction (FEC) is a system of error control for data transmission
where the receiving device can detect and correct certain errors.
Feed Horn This is the device that receives the focuses signals from a satellite dish. It collects
these signals and submits them to the next piece of equipment in the network, usually
a Low Noise Block converter which then changes the signals into a better format for
transpiration to the receiver.
Geostationary Orbit The position where a satellite is 35,786 kilometers (22,241 miles) above the equator.
At this distance, the satellite Orbits the earth at the same rate as the earth is turning.
This causes the satellite to appear stationary in relation to an observer on the ground.
IP The Internet Protocol (IP) is a network communication protocol used on Ethernet
networks and the Internet.
IP Address The 32-bit computer address defined by the Internet Protocol. It is usually represented
in dotted decimal notation. Example: 192.168.111.112
L-Band This range of frequencies is from 950 MHz to 2,150 Mhz It is much lower than those
used by satellites (About 1/10 to 1/6). Satellite frequencies travel well through space
and our atmosphere but do not do well through the cable that comes from the dish on
the roof to the receiver. So LNBs convert satellite frequencies to the lower, easier to
transport, band of frequencies referred to as the L-Band. It is L-Band frequencies that
the S300 receiver tunes to.
LNA Older systems used a unit called an LNA Low Noise Amplifier. This unit amplifies the
RF frequency and then transmits the signals down a special (expensive) cable to the
receiver. Note that received signals are not converted to lower frequencies by this unit.
LNB LNB stands for a Low Noise Block-converter. This unit receives the signals collected
from a satellite and converts their very high frequencies (12 Giga Hertz, written 12
GHz, which is actually 12,000,000,000 cycles per second) to a lower and somewhat
more usable range. All LNBs have a Local Oscillator (LO). This number is usually
stamped on the LNB but not always. It may be necessary to check the original
Version: 2.02
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