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Protective reactive coating. It extends the durability of the zinc coating.
To make installers work easier, Televes provides a free programming software for Avant3, downloadable at www.televes.com. In order to use this software you need: A PC (with Windows XP or higher) equipped with a COM or USB port. An RS232-to-RJ45 connection cable (for COM port), and, in case you wish to connect via USB instead of the COM port, an adapter (Ref. 5838). The program automatically detects the port that is being used, which allows for an intuitive and quick installation, as well as an easy programming. Among other things, you will be able to: Store as many configurations as you wish on your PC, modify inputs' configuration, modify each filter's aperture, etc. The software is valid for any 5326 unit manufactured after January 2010.
Modulators - either the modulators that generate a channel from audio/video or those built-in inside the TV SAT receivers - produce interfering signals that may impact other channels in the band. There are three types of signals: Trace of the audio carrier. Local oscillator used in RF channel generation. Upper sideband. The use of a single-channel amplifier prevents the impact of this interference, provided the amplifier is not working at maximum output voltage. To prevent the effects of these signals, it is recommended to adjust each amplifier to a voltage 4 dBµV below the maximum output voltage.
To allow a control signal to pass through, you can use a bridge built with voltage injectors (ref. 7450). By connecting the power cords of two injectors, you allow the signals to pass between receiver and LNB.
Very often, when you are receiving signals in coastal zones, there are important variations in the level or the power of the signals that reach the amplification headend. In that situation, a conventional amplifier would be constantly adjusting the output level. This could cause the amplifier to reach saturation (due to excessive output level), or an output signal level that is not appropriate to maintain the minimum operating levels in the network. The automatic gain control comes in to solve this issue and maintain a fixed output level in the amplifier, regardless of the input values (AGC usually supports +/- 15 dB variations).
The solution lies in the power supply. The equipment with ref.5796 has to be connected to the amplifier, and its output to the receiver. When the emitter detects a voltage from the receiver, the voltage delivered to the input cable corresponds to the voltage in the receiver. In this way, the amplifier will be always powered and the LNB will always have the appropriate polarization. It is important that the amplifier is able to work with any voltage between 12 V and 24 V, which is the case for all the products in the 561601 range.
There are several options, depending on the desired output level. If the installation concerned is individual and inside a home, references 5530 and 560601 are applicable.
The DIN 45004 standard specifies the measuring procedure to assess the maximum output level of a single-channel amplifier. At that point, the amplifier will be generating distortion: the higher the output level goes beyond the maximum output level, the higher the distortion. However, a single-channel amplifier is always part of a headend, where outputs are combined to produce a single output. In case Z self-mixing is applied, the following factors have an impact on the headend's final level: Through losses at the amplifier's output loops. Through losses at the bridge used to connect the different modules. The contribution of these two losses may reach 1 dB approximately. That is why the output level is actually lower than the one specified in the catalogue.
The Cable Equalizer allows to match the signal levels to be amplified at the internal stage of a broadband amplifier, thus preventing intermodulation at that stage. The Pre-equalizer generates an unbalance between high-frequency and low-frequency signals to compensate for the losses in the distribution network.
The multiband amplifier has a rear switch to configure the power supply to Local or Remote mode. In Local mode, the multiband amplifier generates 12 VDC on its IF input. In Remote mode, the multiband amplifier configures a bridge between IF input and output , so that the voltage entering the output is available at the IF input.
The multiband amplifier has a rear switch to configure the power supply to Local or Remote mode. In Local mode, the multiband amplifier generates 12 VDC on its IF input. In Remote mode, the multiband amplifier configures a bridge between IF input and output , so that the voltage entering the output is available at the IF input.
The effect of the lines moving vertically across the TV screen could be caused by the T05 headend not being grounded correctly. To avoid this, proceed to: Either mounting the modules on the appropriate connection strip (ref. 5071) Or screwing the modules to the sub-rack (5301, 5306)
You can configure a headend by connecting the CDC as a LAN host using the Tsuite software and configuring the module communications (Fixed IP or DHCP client).
As a general rule, they can power up to 7 modules. However, the actual number depends on the type(s) of the T0X modules being used; that is why it is always recommended to check the instructions manual of the specific equipment for the answer.
Yes. Every precaution should be taken, given the cost of the modules. Cabinets with forced ventilation work based on the equipment temperature, regulating it, thus increasing its durability.
Modulators do not only generate the desired channel, but also another kind of signal called spurious (traces from the local oscillator and upper sideband). Depending on the specific band, all these signals have an impact on the calculation of the maximum output voltage: their presence means they have to be taken into account as signals that are going to be amplified.
The difference lies in the number of protection layers applied to each of them. All fibers have a diameter of 125 microns. For 250-micron fibers, a single 125-micron coating is applied on top of the 125-micron fiber, thus reaching the total diameter of 250 micron. After that, an external cover is applied, which may have different diameters (depending on the number of fibers we wish to drive through). For 900-micron fibers, a first protection is applied on top of the 125-micron fiber, thus reaching 250 microns, and then a second protection is applied until the 900-micron diameter is reached. After that, an external cover is applied, which may have different diameters (depending on the number of fibres we wish to drive through).
Usually, when faced with extended optical fiber RF installations, the question arises about which type of fiber connector to use. The apparent mechanical compatibility between some of them may even prevent the network from working. Fiber connectors are named after a combination of two acronyms: One refers to the connector type, the other to the size and finish of the fibre ferrule. The first indicates whether the connector is threaded or has a different type of fixing. The second acronym indicates the fiber’s finish: bevelled (APC_Angle Physical Contact), straight (PC_Physical Contact), with an air gap, etc. For example, the seemingly valid connection of a fiber equipped with an SC/PC male connector to a device equipped with an SC/APC female connector causes the signal to degrade, since the compatibility between both connectors must be at both the fixing mechanism and the finish levels.
Always the 900-micron, since it is easier to handle. The 250-micron option originated in the reduction of the market price (to save on installation budget), although it clearly increases the labour costs for the installation: the handling is more complex due to the fiber’s narrowness, making fiber stripping, cleaving, termination and fusion more difficult).
Yes. Prior to connecting optical equipment together, you need to check the optical output power produced by the transmitter, and then you need to calculate the optical signal level that will reach the receiver. The equipment instruction manuals specify the maximum and minimum output and input values for each equipment. Make sure you never provide an optical receiver more signal than it can handle or it will be damaged. To prevent this issue from materializing, 5, 10 and 15 dB optical attenuators are available.
