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Info 14 (October 2012)
- General information: Televes defends the DTT on all fronts +
- Televes in the world: Televes present in the fairs of Futura and PACE PCO Expo 2012 +
- FAQ:Can I receive DTT in my Caravan, boat or in fringe areas? +
- Your pictures: Gleaming solar panels... +
- Talking about...: Gsertel –part of Televes Corporation +
- Did you kow...: ... that the SAT-90 received the ‘Mundo Electrónico’ award? +
- Training: Data tables in digital transmissions +
- Ideas: ¿Interferences in UTMS networks? +
- Real installations: Coaxdata’s system in the Atlanta Braves Stadium +
- New product: COFDM DigiSlot Modulators +
Televes AT FUTURA IN SALZBURG, AUSTRIA
For another year, Televes took part in this event that brings together major manufacturers and distributors of consumer electronics, home appliances and telecommunications. Televes presented the new product catalog, being the developments in the QSD high quality dishes and the H60 field strength meter of particular interest. |
attending this great fair of the sector, confirm that the brand Televes is advancing by leaps and bounds in the German and peripheral markets, a great challenge and short term target for the Televes Corporation. Televes USA AT THE FAIR Pace PCO Expo 2012 - Rochester, MN (EE.UU) This fair, specially targeted to private cable operators, was organized by one of the biggest distributors in the industry; only invited manufacturers can expose. |
T.0X headends with transmodulation 8PSK/QAM and RFoG elements, as well as exclusive applications for the field strength meters H30 and H60. Javier Ruano, the managing director, commented that “the product presentation in this kind of event maximizes operationality, as you have the opportunity to delve into a product demanded by the assistants, which creates a more personalized loyalty”
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Can I receive DTT in my Caravan, boat, or in fringe areas? Yes, in these cases you should contact a licensed contractor to install a satellite receiver DTT, ref. 5113. |
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THE EXPERT’S OPINION Can I order a receiver for a caravan or motorhome? |
Permission is granted for the reception of DTT in national territory and for terrestrial and satellite combo receivers. Documentation to be submitted: Registration number ITV card copy Can I order a receiver for a boat? Yes, you can. The conditions are as follows: The boat must be registered in the register of ships and shipping companies of the Directorate General of Merchant Marine. Permission is granted for the reception of DTT in Spanish territorial sea, or voyages between Spanish ports.
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Before installing, or once performed, it is convenient its notification to the Directorate General of Merchant Marine or the Captaincy Maritime of the port where the installation takes place.
José Negreira |
Gleaming solar panels... The video sent from Córdoba for Supplies South Technical S.A. (STS) shows a turret section is somewhat more than one antenna support robust. The possible applications of these structures are numerous and versatile, such as evidenced by this washing system |
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GSertel, Sistemas Integrados de Servicios de Telecontrol |
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With the H45, a portable field strength meter with performances that before only were within the reach of laboratory equipments, |
the facilities, so that the development of the equipments is clearly oriented to features that providegreater cost-benefit ratio to the installer. In addition, we have recently launched a new division to diversify the product, including to our catalog telecontrol systems for the energy and infrastructure sector. |
equipment, benefits previously only available to laboratory equipment. Gsertel made a strong commitment in 2008 and we have seen that this was the right decision. Sergio Martín |
Data tables in digital transmissions |
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DTT signal transmissions have the inherent advantage of a better quality of video and audio as well as the great reduction of the frequency spectrum required. Furthermore, there is a significant amount of information which can be inserted, being useful for both the user and the installer. |
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Digital broadcasting of TV channels require special care at the time of configuration. There are parameters that, if not properly defined, can cause the lack of channels and services on TV sets. For this reason, you must configure of NIT (Network Information Table). By means of NIT will be possible ID settings (Network Identifier) and ONID (Original Network Identifier). These two identifiers must be consistent with the country in which the facility is located, because there are already specific values of these fields for each country, meaning that all units in the system must have the same values. Each unit will have a parameter value TSID (Transport Stream Identifier), unique and different. Otherwise, if a facility has two multiplex with equal TSID, one of the services will not be tuned, since when making a search the TV set, or the receiver, they will identify the two different services as being the same. Therefore, each Transport Stream (TS) comprises several services identified by a unique SID (Service Identifier) each one of them, and can be repeated in different TS. You can also assign a name to the network, either to set the
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hierarchy information, or to define the LCN of each service. In the T.0X transmodulators with COFDM output, the NIT can be configured from two modes: Auto: values for NID,TSID and ONID are the same as those of the input signal. Manual: the values of the parameters can be edited.This option is required for installations where more than one module has to be configured to receive all programs of a transponder. In this case, you would need to change at least the TSID of one of them in order to be able to tune the services of the two modules by either the TV set or the receiver of the end user. You can also define the LCN of each service module. Be aware that there can not be identical values between units. In the COFDM Encoders and Modulators there is the possibility of editing the program name and the SID. In the NIT can be assigned a name to the network, and configure the NID, TSID and ONID. In any of these devices can be configured both the hierarchy and the LCN for each service. Thus it is possible, through an automatic search on the TV set or DTT receiver, a classification of programs according to the desired order, regardless of multiplex to |
which they belong. This feature is for any facility with a large number of services and televisions such as hotels, hospitals and CATV networks. Hélder Martins |
How to avoid interferences in UTMS networks produced by IF amplifiers? Since the release of the mobile 4G and LTE, in Televés we have emphasized the importance of shielding as the best solution against interferences. The most common is talk about TV elements that are affected by interference from other bands. However, the reverse also happens, as it is the noise generated by faulty installations of satellite IF reception systems in the 1.9 GHz band used in UMTS. |
The main source of this interference is the IF amplifier, either by not having enough shielding or be working at the limit of its maximum output voltage..
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levels according to ITU-T K60. |
Coaxdata’s system in the Atlanta Braves Stadium |
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At Turner Field baseball stadium of the Atlanta Braveshas it has been installed a coaxial network that enables the distribution of television signals from own production as well as the distribution of the Internet by the CoaxData system.
The TV signal is mixed with the signal generated by CoaxData modules, which ensures the distribution of television and data services throughout the stadium. |
The new family of COFDM digital modulators DigiSlot is available in two different chassis: to be installed into 19 inch racks, and to be installed onto wall. |
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The output channel of the DigiSlot modulator can be adjusted at any frequency, in both BI and UHF TV bands. The versatility of these modules, equipped with two slots, allows connection of one or two encoders with either A/V or HDMI inputs. This system allows the distribution of signals both from sources A/V and HDMI, through a coaxial cable network. In order to do this, the system requiers an A/V encoder with two inputs, and one HDMI encoder with one input, to generate a COFDM multiplex which can carry up to four services. The applications of this product range DigiSlot, is quite extensive: hotels, shopping centers, public places and even the residential market, where installations require the same signal source across the network, and with a
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quality SD, HD or 3D (CCTV cameras, TVSAT receivers, DVD, Blu-ray or any other source A / V or HDMI). With an simple installation, it can be configured through the front panel or via a PC using a web browser (no specific software needed). |
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