Category: Fiber Transceivers

by http://www.fiber-mart.com

Fiber Visual Fault Locator is a kind of device which is able to locate visual faults including tight bends, breaks and bad connectors immediately. You can diagnose and repair simple fiber optic link problems with the help of Fiber Optic Visual Fault Locator. This laser-powered VFL enables you to locate fibers, verify continuity and polarity, and helps you find the location of breaks in fiber optic cables, connectors and splices. The Visual Fault Locator, model BWJ650-10, can be operated in continuous or flashing modes for easier identification. This fiber optic VFL is compatible with 2.5mm and 1.25mm fiber optic connectors(with optional adapter, watch video below), providing you with easy connectivity. You will find that this ruggedly constructed fiber optic Visual Fault Locator stands up to the demands of field-testing. This fiber optic testing device is housed in an ergonomic case that survives drops, impacts and vibrations The fiber optic Visual Fault Locator also features long battery life for hours of use. BWJ650-10 can locate fault up to 10km in fiber cable(BWJ650-20, up to 20km), with compact in size, light in weight, red laser output. SpecificationsProduct: Fiber Visual Fault Locator BWJ650-10Wavelength: 650 ± 10nmOutput Frequency: 10mWDetectOperating Temperature: 0~60°CFeaturesAccelerates end-to-end fiber continuity checks;Speeds fiber tracing and identification;Aids in location of fiber faults, tight bends, breaks and bad connectors;Connects to 2.5mm standard connectors;Connects to 1.25mm LC connectors (with optional adapter).Operation Demonstration How to use visual fault locator properly? How to detect and locate fiber problem in one second? Remove the batteries for prolonged periods of storage;Never look into the path of the Laser Beam;Never look into the end of a fiber that may have any fiber visual fault locator, or any other laser, coupled to it;Never launch visual fault locator into active equipment or microscope;Make sure that the end opposite the Visual Fault locator is not connected to any electronics or active equipment during termination. Conclusionfiber-mart.com Visual fault locator can outputs red laser which can be seen by human eyes directly. The laser is strong on penetration. Lights leaked from fault point is clearly visible even through the 3mm PVC layer. That makes it an great role in data center and all networking infrastructure. 

by http://www.fiber-mart.com

There is a vast number of switches with PoE coming up, PoE(Power over Ethernet) is a kind of technology that is used to simplify the power supply. We are going to focus on several features to explain the reasons why you need a PoE switch. 1. PoE switches could help you out on bothering with the cables. Devices like Wireless Access Point(AP) and Network Camera could be able to gain power directly from the connected switches through the PoE port, which means the PoE switch can transmit data and power through a cable in the meantime. As to the Non-PoE switch, if you want to connect a Network Camera to it, basically you need a power cord to power up the Network Camera along with a cable for data transmitting. It means you have to cost extra money for the purchasing and maintenance of power cords. 2. PoE switches is a bit more expensive than Non-PoE switches. The only shortcoming of PoE switch is the expense of deployment, given the convenience that the PoE provided to us, it is quite reasonable for them to claim a higher price. But if you are going to deploy a group of switches and maintain the function in long-term, PoE switch can definitely help you save the budget with fewer cables. 3. There is no potential security issue need to be worried about. Some of you might be thinking what would happen if Non-PoE device were connected to PoE switch? Is there a potential to damage each other? Actually, there is no need to worry about it. The claim below quoted from a PoE switch of fiber-mart.com has fully explained that situation. 

by http://www.fiber-mart.com10GBASE-T SFP+ transceiver is specifically designed for high speed communication links that require 10 Gigabit Ethernet over copper cable (Cat 6a/7 cable). 10GBASE-T SFP+ copper transceiver is the first SFP+ transceiver that offers 10Gb/s communication over this type of media. Compared with other 10GbE optical modules, the 10G SFP+ copper transceiver has stable performance, and can take full advantages of the existing copper cabling. Introduction of 10GBASE-T SFP+ Copper Transceiver10G copper SFP+ transceiver has high performance, good reliability and is a cost-effective I/O solution for 10G Ethernet and 10G Fibre Channel applications. 10GBASE-T SFP+ copper transceiver is mainly used in Cat 6a or Cat 7 copper cabling system for 10G transmission with a maximum distance up to 30m. In addition, compared with SFP+ DAC cable, 10GBASE-T copper SFP+ transceiver can save at least 0.5W power consumption, and its port can both support STP (shielded twisted pair) and UTP (unshielded twisted pair). Therefore 10GBASE-T SFP+ copper transceiver is becoming more and more popular in network switches and servers because of its lower power consumption and pay-as-you-grow flexibility. 10GBASE-T SFP+ Copper Transceiver vs SFP+ Optical Transceiver vs SFP+ DACSFP+ DAC, 10GBASE-T SFP+ copper transceiver and SFP+ optical transceiver are three common components used in 10G connections. The following chart reveals the differences between them. 10GBASE-T SFP+ Copper Transceiver VSSFP+ DACDirect attach cables (DAC) have been available and deployed since about 2007. For 10Gb/s data rates, they are implemented as a fixed length of Twinax cable with SFP+ plugs integrated at both ends. Passive versions can be used for connections up to 7m and active versions for connectivity up to 15m. A DAC is a low power, low latency connection offering “pay-as-you-grow” flexibility but can be awkward, because it is difficult to install through typical cable management. The degree of difficulty increases with DAC length. In addition to limited length, a DAC can be an expensive connectivity solution insomuch as it is does not take advantage of installed Cat 6a structured cabling. But The 10GBASE-T SFP+ transceiver module is compatible with SFF-8432 and plugs into any standard SFP+ cage. The front of the module features a standard RJ45 socket ready for connection to any Cat 6a cabling. And it can reach up to 30m over CAT6a UTP cable, sufficient for all network access use cases. What’s more, The RJ45 connector interface is rock solid. No surprises will occur when deployed in your data center. 10GBASE-T SFP+ CopperTransceiver vs SFP+ Optical TransceiverShort wavelength (850nm) SFP+ optical transceiver modules can be used for lengths up to 300m at 10Gb/s data rates, through 10GBASE-T SFP+ copper transceiver module is a power optimized solution for lengths up to 30m. In comparison, multi-mode fiber cabling is considerably more expensive than Cat 6a UTP. SFP+ optical transceiver overall is not well suited for cost sensitive network edge applications. Field termination of fiber requires special skill sets and tools which significantly increase the complexity and cost of installation. But 10GBASE-T is compatibility with existing structured cabling devices and existing low-speed devices makes it uniquely suited for widespread deployment. These features, combined with superior cost and achievable features, make the simplest path of 10GBase migrate from Gigabit Ethernet to 10G Ethernet. Features of 10GBASE-T SFP+ CopperTransceiverCost effective at up to 30m distance on UTP cablesExtension of the life of any switch hardware, without having to change existing infrastructureArchitecture Flexibility: Supports Top of Rack, Middle of Row or End of Row architecturesAuto-negotiable backward-compatibility with previous-generation BASE-T networks for a seamless migration to 10GbEField twisted pair cabling with familiar RJ-45 connectorSupport for multi-gigabit data rates up to 10 Gbps ConclusionAs 10GBASE-T network equipment becomes increasingly available, data center decision makers will want to take advantage of the cost savings, convenience, and flexibility provided by deploying 10 Gb/s technology over balanced twisted-pair copper cabling. Nowadays SFP+ 10GBASE-T transceiver, owing to the compatible issue with switches, is not offered by many vendors. However, from a network equipment designer’s perspective, 10G copper SFP+ modules will become popular in the near future.

by http://www.fiber-mart.comMedia converter and network switch are both widely used in today’s high speed network applications. In some scenes, one can used to replace another one. Then, which one should I choose for my network? What is the difference between media converter and network switch? This post will cover the knowledge of media converter and network switch, and explain the difference between them. 1.What is Media Converter?Media converter is a very simple networking device that used to convert electrical signal utilized in copper cable to light signal for fiber optic cabling and vice versa. It is essential to have the fiber optic connectivity if the distance between two network devices is greater than the copper cabling’s transmission distance. They were introduced to the industry in the 1990s, and played an important part of fiber types of cabling system in connection with existing copper-based wiring system. They are also used in metropolitan area network (MAN) access and data transport services to enterprise customers. 2.What is Network Switch?A network switch is a computer networking device that connects devices together on a computer network by using packet switching to receive, process, and forward data to the destination device. Usually, a switch serves as a controller, enabling networked devices to talk to each other efficiently. Through information sharing and resource allocation, switches save businesses money and increase employee productivity. And the network switch operates at the data link layer (Layer 2) of the Open Systems Interconnection (OSI) model called layer 2 switch, which operates at the network layer (layer 3) of the OSI model called layer 3 switch. 3.DifferencesBetween Media Converter and Network SwitchIn fact, both a media converter and a network switch today can act and perform the same functions. And Both of them operate within the OSI model which is hierarchical and structured in the form of layers such as layer 1, layer 2, layer 3 and so on. A clear understanding of what OSI layers do, and what the differences between devices operating at different layers are, will help you learn about the difference between media converter and network switch.  Layer 1: Media ConverterLayer 1 refers to the Physical Layer, which is the first layer of OSI model. It defines electrical and physical specifications for devices, and the relationship between a device and a transmission medium, such as a copper or optical cable. If a device only operates at Layer 1 of the OSI model, that is usually a media converter. Working at this layer, media converter is used to convert electrical signals and physical media, but don’t do anything for data changes. These media converters usually have only two ports to convert the incoming electrical signal from one cable type and then transmit it over another cable type, such as UTP to fiber and so on. Layer 2: Media Converter and Network SwitchLayer 2 refers to the Data Link layer of the OSI model. The Data Link layer is concerned with moving data across the physical links in the network. Both media converter and network switch can operate at layer 2. The difference between a layer 2 media converter and a layer 2 network switch is the number of ports. Usually, a device with two or three ports is called a media converter. Compared with layer 1 media converter, a layer 2 media converter can be thought as an advanced converter. A device with four or more ports is called a network switch, and compared with layer 3 switch, a layer 2 switch is usually a basic switch. Layer 3: Network SwitchLayer 3 refers to the Network layer of the OSI. The Network layer is concerned with knowing the address of the neighboring nodes in the network, selecting routes and quality of service, and recognizing and forwarding to the Transport layer incoming messages for local host domains. Only network switch can operate at Layer 3. Switches operating at Layer 3 are smarter than Layer 2 devices and incorporate routing functions to actively calculate the best way to send a packet to its destination. ConclusionMedia converters can be used anywhere in the network to integrate newer technology with existing equipment to support new applications, technologies and future growth. Layer 2 and layer 3 network switches are also widely deployed in enterprise and data center for higher speed and more capacity. fiber-mart.com provides both media converters and managed network switches for your option. You can choose the most suitable one according to your specific needs.

by http://www.fiber-mart.comHDMI optical cables have been an effective alternative to HDMI copper cables for a few years. However, what exactly is the difference between them? One thing hard to ignore is the difference of material under the coating, in which there is fiber for HDMI optical cable and copper for HDMI copper cable. Taking reference from the DAC and AOC, there are facts such as the transmission of fiber is faster and the signals on fiber are more reliable. In order to better comprehend the HDMI optical cable, the meaning of HDMI is the first thing we should get to know. HDMI stands for High Definition Multimedia Interface, featuring the extraordinary capability of signal transmission. For example, the latest specification HDMI 2.0, which was released in 2015, supports a maximum bandwidth of 18 Gb/s. HDMI interface has become a mainstream solution for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for analog video standards. As the data amount is increasing day by day, a new demand for larger and faster data transmission has shown up, which means the copper cables are far away from satisfaction. Therefore, companies with vision, like 10Gtek, has released its HDMI AOC (active optical cable) series products in a bid to win the market. As what fiber-mart.com has expected, fiber has landed in the area of HDMI. HDMI AOC system is very similar to the HDMI metal wire system. The basic difference is that fiber optics uses light to transmit data; whereas metal wires do not. It sends the data down the fiber lines instead of using electronic pulses for transmitting data like in the metal wires. By taking outstanding advantages of fiber, HDMI AOC is able to transmit to a long distance of over 100 meters and supports up to 18 Gb/s so far. Moreover, there is no EMI (Electromagnetic Interference) could impact on HDMI AOC. Actually, for those who value the quality of the signal, HDMI AOC guarantees there is no signal would possibly lose and signal can be transmitted without being compressed.

by http://www.fiber-mart.comWe are going to talk about three types of appliance that are usually confusing the users, which are the matrix, switch, splitter. Most of you might have heard of the switch before while the switch we are talking about is not exactly same as the conventional switch. As the HDMI standard is getting more and more popular, in addition to HDMI copper cable, there are HDMI transceiver, AOC coming up these years. So far, we even have something more comprehensive which are the matrix, switch, and splitter. They could greatly expand the use of HDMI products by controlling the signal flow. 1.What is the switch of HDMI?The switch usually has various ports on its patch panel, usually, there are several HDMI input ports and a HDMI output port. With a tiny box like the image below, your monitor in the living room can display signal sourced by the case, PlayStation 4, etc. It’s like multiple signals can be sent to a monitor by the switch although the monitor can only display a single signal source at once. 2.What is the splitter of HDMI?The splitter has the opposite function to the switch, instead of integrating different types of signal, as you see, there are several HDMI output ports and a single HDMI input port, a single signal can be displayed to multiple monitors in the meantime by the splitter. A typical example is the television store, where the monitors on sale are supposed to display the same source in order to showcase the screen of monitors. 3.What is the matrix?As to the matrix, it is a kind of comprehensive appliance that has combined both of the function of switch and splitter. It’s mostly applied in the surveillance system and concerts, where the staffs need to switch the content on screens flexibly. ConclusionAlthough the function of each appliance is slightly different, the purpose is same which is to manage the relationship between the signal source and the monitor. Other than the device itself, you might need to pay attention to the standard of HDMI as well, there are HDMI 1.3, 1.4, and 2.0 being used but only HDMI 2.0 and above can support 4K (4096×2160) with 60 fps.