Most questions proposed by our customers can find answers in this section. If you need further assistance you can contact us directly by completing the following information
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.
Yes. Dirt in a connector core prevents light from following its path, as it gets in its way. This produces an increase in temperature at that same spot, which is directly proportional to the optical output level of the optical transmitter. With time, this situation will cause a degradation of the ferrule resulting in failure or in a higher attenuation of the signal.
All have a diameter of 125 micron (irrespective of the different protection options); however, single-mode fibers have 8.9 or 10-micron cores, while multimode fibers have 50-micron or 62.5-micron cores.
Dirt: This affects 95% of optical equipment failures. It is essential to always methodically clean the connectors to be installed, even if they are new.
The splicing process using an arc splicer ensures the attenuation figure at a given spot, while mechanical splicing doesn't guarantee a perfect operation (it has to be measured afterwards).
Yes. Optical fibers are good at withstanding longitudinal strain; however, this is not the case when they are winded over themselves (as a result of incorrect uncoiling). This usually causes premature failures as soon as traction is applied to the fibre. Extracting the fibre form the reel longitudinally is essential.
No. LNB power supply is always provided in parallel with the fiber. The optical LNB is powered through a coaxial cable. Hence, Optical LNBs are always equipped with two connectors: one “F” for the power supply, and an FC/PC connector for the optical fiber.
No. The reason is that not only their termination is different (T0X has SC connectors, while optical LNBs have FC connectors), but also because the ferrules in each connector have different finishes (APC for the T0X range, PC for the optical LNB range).
It is a plug&play range. The whole range of products is currently available (pre-terminated patch cords, splitters, attenuators, terrestrial and satellite signal mixers...). A full range of products that will help the installer provide closed quotes to their clients.
One of the product's main advantages is scalability. In other words, once a set of modules is bought, there is always the possibility of installing additional modules if necessary, without the need to discard any of the existing products.
The maximum length of the coaxial cable from the selector switch to the R-TV-SAT outlet for a correct commutation is 100 m. This length was verified with Televes' receivers; that is why we cannot guarantee this length will be valid for any receiver in the market (it will depend on the voltage levels provided by each receiver).
The Multimat system allows the grouping of up to 4 modules laterally. This allows the user to access 4 different satellites, and choose any of the 4 polarities of each of them (a total of 16 polarities). Furthermore, we can have a Terrestrial TV signal at the user's outlet if we combine it by means of a mixer (a fifth module mounted horizontally). Vertically mounting additional main units allows us to extend the number of outlets or users to serve. A full 4-satellite service can be very easily provided to a total of 32 users.
