Take off the dust caps (immediately before making a connection) and save them for further use.
FIBER CONNECTOR TYPES SPF INSTALL
Install a module into the slot until you feel the SFP transceiver snaps shut.The module installation is quite easy and goes in a couple of stages: Is hot swapping of MOXA’s SFP modules allowed? Is it possible to use a copper SFP module SFP-1GTXRJ45-T in a Turbo Ring? One should not forget, that there exist SFP modules not only for optical fiber, but also for a twisted pair with a RJ-45 slot. If your cable and SFP module have different connectors, then you can use an adapter. SC connectors are good at multiple use on various cores (they can be taken off and put on another wire). ST connectors can be helpful when a stronger fixation is required, that is thanks to a screwed metal cap. In most of the cases, the LC connector is used, in particular, only these connectors are present in SFP modules by MOXA. Basically, a particular connector does not stand out among all others, thus, their choice is conditioned by the task. Frequently, if you are responsible for the network equipment only, then cables have some connectors already and you only need to find out, what they are and to choose a correspondent switch or a media converter.īut if you are to decide, then the answer to a question “What is to choose?” won’t be universal and objective. It is essential to remember that, as there is no MDI/MDIX function for automatic rate detection in these devices.Īccordingly, apart from optics, it is necessary to choose the required speed: Fast Ethernet, Gigabit Ethernet or 10 Gigabit Ethernet.īesides the difference in data transmission technology and optical fiber type, in SFP modules there exist several types of connectors - SC connector and LC connector. according to particular 802.3 Ethernet standard. Two paired modules are used for organization of connection, each having different (opposite) wave lengths of a receiver or a transmitter, for example, 1310 nm and 1550 nm.Įvery optical fiber operates at a definite rate, i.e. In this technology only a single-mode optical fiber is used. This either reduces the number of cores when building networks, or saves money in projects where the amount of cores is limited by the budget. There also exist SFP modules with a WDM technology, in which the signal receipt and delivery are done through a single core (using one connector), but at different wave lengths. Here another technology is used, laser is used as a light source, radiation spreads along the optical fiber in one mode, so that the data transmission distance reaches 120 km. They are used with a single-mode (SM) cable, typically, of 9/125 standard. The disadvantage is that there is a data transmission distance of up to 550 meters. There are several radiation modes spreading along the optical fiber, each at its unique angle. The energy of light is used for data transmission, a light emitting diode serves as a source. Modules support data transmission at rate of up to 10 Gb on waves with thickness of 850 nm or 1320 nm. They are designed for application with a multi-mode (MM) cable, typically, of 50/125(ОМ2) standard or 62,5/125 standard. That is why, when choosing a module, it is required to decide on a fiber optics type first. The main difference between various SFP modules lies within a type of optical fiber. They enable to connect a port of a module to the optical fiber network.
For example, SFP modules (Small Form-Factor Pluggable) are among highly demanded types and have embedded transmitter and receiver. The light is transferred through the core made from special polymer with transceivers at the connection boundary.
The principle is based on the light that is used for the signal transmission. The main advantages of optical fiber networks include: increase of transmission distance (in some cases up to 120 km), high interference immunity, protection against unauthorised access (interference, inductive reading, etc.). What distance can be there between SFP modules?.What is the difference between a single-mode and a multi-mode cable?.And when it comes to building a network, many questions arise: When we come across with a notion of «fiber optics» or «optical fiber links», we picture kilometers of optical fiber networks connecting highly remote locations.
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