Lecture
- a mirror to reflect the signal stream from the satellite (in simple terms "plate") and focus on the feed of the converter of a parallel beam of radio waves emitted by a specific satellite. In form, satellite antennas differ, on direct focus and offset.
- Satellite dish with shifted focus (more ...).
- Symmetric satellite antenna (more ...).
- satellite antenna with a fixed fixed suspension (fixed).
- the polar gimbal serves to rotate the satellite antenna along an arc, repeating the trajectory of a chain of satellites visible from the antenna installation site. As a rule, for such a suspension, you need only one actuator (actuator).
- in order to make it easier to remember where longitude is, and where latitude is, let's take the familiar EQUATOR as a reference point. The latitude will be parallel to the equator, and the longitude is perpendicular, i.e. it will cross it.
- " N " - north, " S " - south.
- " E " - Eastern, " W " - Western.
- includes several values, such as: Frequency; Type of polarization; The flow rate is the symbol rate "SR" (Symbol Rate); Error Correction - FEC (Forvard Error Correction); Type of encoding (if the signal is encoded).
- Another name LNB (Low Noise Blockconvertor) or LNA (Low Noise Device) is a device that is mounted in focus of the signal reflected from the satellite antenna . That is, an electromagnetic signal coming from the satellite is projected onto its illuminator. A converter converts this signal into an electrical one and transmits it to a receiver (receiver). Converters are for different ranges and for different configuration of signals.
- An element of the satellite antenna converter, onto which a focused signal beam coming from the satellite is projected.
- an electronic device that serves to receive a signal from a satellite (i.e., from a satellite dish ). This unit converts the satellite signal into video and sound intended for the subsequent output of the image and sound to the TV.
- Supports designed for mounting a satellite dish on a vertical surface (more ...).
- in this case, the satellite receiver tuner is an input device (radio electronic unit) to which the signal comes directly from the converter.
- simulator of conditional access module , used for viewing encoded paid satellite channels. The conditional access module consists of a special block of the decoder (decoder), with one or several slots, into which the cards with the keys (codes) written in them are inserted, and the emulator is a program that simulates this block.
- an electronic unit with an electric motor that serves to rotate (position) a satellite dish to a selected satellite. The motor suspension allows you to alternately receive the signal from different satellites. The number of satellites directly depends on the zone of visibility from the place of installation of the motor-suspension in the interval of the arc from the horizon to the horizon (HH).
- an electronic device that controls the actuator (actuator) of the satellite antenna itself , while keeping in mind the positions of all the satellites for which the antenna was preset. Modern positioners are controlled both from their own remote control, and through a satellite receiver (more ...).
(translated from English. actuator - actuator) - electromechanical (or electromechanical) drive, which drives the satellite antenna mirror. Managed by such a drive positioner. In the positioning of satellite antennas of this type of suspension, one actuator is used (to control the horizontal rotation), or two (for separate control of the horizontal position and vertical tilt of the antenna) (more ...).
- The sun, radiates not only a light stream, but also electromagnetic. Since the Earth rotates around the Sun, then there comes a period when your satellite dish , satellite, and the Sun, begin to be on the same straight line. At this moment, the solar electromagnetic noise flow blocks the signal coming from the satellite transponder. First, the “freezing effect” of the image and the loss of sound appear, and then the reception becomes completely impossible. The period of solar activity, which takes place on the days of the autumn and spring equinox, lasts approximately from one to two weeks, manifesting itself every day, at 5..10 minutes during this period.
- the angle of the axis around which the mirror of the satellite dish is rotated.
- the angle of inclination (tilt) of the satellite dish mirror (measured from the polar axis of the planet).
- is the angle of ascent to the satellite measured from the horizontal plane to the vertical direction to the satellite.
- also that angle of place (see above).
- resistance of the spherical mirror of the satellite antenna to wind gusts.
- an electronic unit designed to be able to view coded paid channels. As a rule, the conditional access module has a slot in which the "access card" is placed. In aggregate, the "conditional access module" together with the "access card", and allow you to view closed (coded) channels.
- simulator "conditional access module", which serves to view the coded pay channels. The conditional access module consists of a special block of the decoder (decoder), with one or several slots, into which the cards with the keys (codes) written in them are inserted, and the emulator is a program that simulates this block.
- a radio electronic unit that converts a low-frequency (LF) audio / video signal into a high-frequency one (for example, in the “UHF” range). Such a signal can be fed to the antenna jack of the TV (or VCR).
- structural element, which is attached to a vertical or horizontal plane. For example, to the wall, or to the concrete floor. On the "support", the satellite antenna itself is installed with its suspension.
- structural element, which stands between the support and the satellite antenna . This device serves to rotate the antenna (during tuning to the satellite), in the horizontal and vertical plane. After tuning, the gimbal allows you to fix the satellite dish in the desired position.
- " Di gital S atellite Eq uipment C ontrol" is a special protocol designed for data exchange between the receiver and receiving devices (in this case, satellite dish converters). These data are received via the same cable over which the satellite signal enters the receiver.
- serves to enable, remotely, to switch the satellite receiver between different receivers. For example, between two, three ... (and so on), satellite dishes , converters, and a converter with two or more outputs.
- A special protocol supporting switching between four receivers (or up to four).
- a special protocol supporting switching between sixteen receivers (or up to sixteen).
- A special protocol that supports the management of a motorized suspension (positioner). Setting the rotation of the satellite dish , is done manually using the receiver's control panel. When controlling via the " DiSEqC 1.2 " protocol, using buttons, the antenna gradually rotates until a signal appears from the satellite. After that, the position of the satellite dish is stored in the memory of the receiver. The same operation is carried out when setting up the rest of your chosen satellites ..
- Management of the motorized suspension (positioner). Similar to the DiSEqC 1.2 protocol. But, in this variant, the receiver with a motorized satellite antenna will automatically calculate the angle of rotation of this antenna, for a given satellite. Here, it is enough only to initially adjust the motor mount to the geostationary south of the place where the satellite antenna is being installed and adjusted (sufficiently fine tuning is required).
- adjustment (from English - "adjustment", German. - "justieren", Latin. - "justus") - a set of actions: fine tuning, adjustment, adjustment.
- the local oscillator is a generator of electrical oscillations used to convert frequencies in radio electronics. In this case, it serves to convert the frequency of the signal coming from the satellite.
- geostationary south, we can assume the value of " longitude " of the settlement (place). This value coincides with the direction to the south in the horizontal plane. The geostationary south has an azimuth equal to " 180 " degrees, measured from the location of the settlement itself.
is the angle measured from the point of location between the north direction and the selected object, for example, a satellite. The azimuth is calculated in the clockwise direction, and is measured in degrees from 0 ° to 360 °.
- " multi " - many, several. " feed " (from the word " feeder ") - receiving device, antenna. A satellite antenna with a multifid is an antenna on which there are several receiving devices (converters) located at different angles to the antenna mirror. Serves for simultaneous reception of a signal, one satellite antenna , from different satellites.
- provider (provider). - is an organization that provides services of a satellite service. For example, television, radio channels, or services associated with satellite Internet.
- this is a function of a satellite receiver, which performs an automatic search for satellite transponders (parameters of which were not previously stored in the receiver's memory) and television and radio channels belonging to these transponders.
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The television. Theory. Satellite
Terms: The television. Theory. Satellite