Fiber Optics Solutions

četvrtak, 30.04.2015.

Underground Wire Locator Overview

When first introduced approximately 40 yearsjavascript:%20void(0); ago, underground wire locator needed to do little more than find buried water, gas, or sewer lines. Today, locating has become more complex as telecommunications wires join utility lines in the underground environment. Surprisingly, though, today's underground wire locator can transmit power across densely populated or areas where land is costly or environmentally or aesthetically sensitive with the same basic tjavascript:%20void(0);echnology.

Most of the time, the wires that you are locating are buried four or five feet underground. You definitely do not want to start digging and risk causing more damage. But you can solve this problem without any damage by using an underground wires locator. What is this underground wire locator composed of?

The underground wire locator or underground wire tracer is a generally consisted of two parts, a hand-held receiver and compact transformer. Both are battery-powered, relatively light and housed in weather-resistant cases. The receiver locates underground lines by detecting magnetic fields created by electrical current passing through cable or tracer wires. Information is displayed in a window at the top of the receiving unit. The receiver unit is all that is needed to locate live electrical cable and in some instances, the receiver alone may be able to locate passive signals of communications wires. While the receiver gets that signal, allowing the locator operator to trace the signal’ s path and follow the cable being located.

The Features of underground wire locator

• Small size, light weight, easy to carry


• Detection method is simple, easy to maintain, with automatic protection function


• Low supply voltage and applicability


• Transmitter power, high efficiency


• Detection error is small, anti-interference ability


• Stable and reliable performance

With its functions of identifying particular wires and their locations, creating an electromagnetic field, setting on a specific frequency, it can detect any interruptions or deviations that could signal a problem. Since you have known its features and functions, you may be curious about how to use it properly.

It is important to make sure to use the wire locator appropriately as it is a delicate procedure when considering that electricity and wiring is involved. Make sure to take the necessary precautions while maintaining the wire locator adequately to avoid misuse and any resultant defects. When you operate the underground wire locator, you should pay attention to the following procedures before operation:

• Purchase a reputable underground wire locator


• Test the voltage power


• Make the necessary tests beforehand


• Follow wire locating procedure


• Continuity testing

For more information about fiber optic testers and tools please visit: Fiber-optic-tutorial.com

Oznake: Underground Wire Locator

srijeda, 29.04.2015.

Muse on 10G SFP modules

As 10Gb SFP+ cables and transceivers have become more common in the current data centers, the issue of vendor lock or encryption might become a problem for data center technicians. This paper discusses the working principle which is used to implement the encryption, why it's employed and the way to overcome it.

2-wire Serial Interface

SFP+ cables and transceivers use a 2-wire serial interface (called I2C) so that the network equipment to poll a specific port and obtain specifics about the cable or transceiver that's connected to that port. This interface can also be known as the Digital Diagnostic Management Interface, Digital Diagnostic Monitoring Interface or DDMI.

The DDMI provides specifics about the cable or transceiver assembly including vendor, serial number, part number, and date of manufacture which is stored in a memory chip or microprocessor inside the cable assembly.

EEPROMs Information

SFP+ passive cables contain EEPROMs inside the connector back shell which have I2C ports. These cables can also be known as SFP+ DAC or SFP+ direct attached Twinax copper cables. An EEPROM is an "Electrically Erasable Programmable Read-Only Memory" chip which is programmed within the factory with precise information about the cable assembly.

SFP+ active copper cables and fiber optic transceivers contain microprocessors inside the connector back shell. The microprocessor has memory which is available to the network through the 2-wire I2C interface. For active cables and transceivers, the interface allows real-time access to device operating parameters and includes alarm and warning signs, which alert the device when particular operating parameters are away from the factory settings.

Ordinarily, these EEPROMs and microprocessors abide by the SFF or Small Form Factor standards, which define the I2C interface protocol and allocate certain information to a particular memory location.

Vendor Lock and Encryption

Some vendors incorporate encryption or "vendor lock" inside their equipment that will issue an alert message if a non-vendor approved cable assembly is plugged into a port. In theory, this makes sure that devices manufacturers will not need to troubleshoot problems due to sub-standard cables. Oftentimes, devices vendors using encryption charge more for their own cords since they lock out use of other cords. In fact, encryption is unnecessary as all reputable manufacturers of SFP+ cables and transceivers meet the standards that IEEE and SFF have founded for SFP+ and interoperability isn't important. Most network equipment vendors that employ encryption allow a work around as long as the customer acknowledges the warning. As an example, the customer might have to acknowledge that he understands the warning and he can accept it before moving on.

Fiberstore’s Cisco Compatible SFP+ Cables Solution

Fiberstore is a professional OEM manufacturer and supplier of Cisco compatible SFP+ cables. Fiberstore has offered industry standard SFP+ cables for many years that have been tested by the UNH Interoperability lab and confirmed to be compatible with Cisco and equipment from other major vendors. The following figure shows 10G SR SFP+ 850nm module:

SFP-H10GB-CU1M  1 meter (3 ft), Wire AWG = 30, SFP+ Passive Copper Cable Assembly, Double-ended

SFP-H10GB-CU1-5M  1.5 meter (5ft), Wire AWG = 30, SFP+ Passive Copper Cable Assembly, Double-ended

SFP-H10GB-CU2M  2 meters (6.5 ft), Wire AWG = 30, SFP+ Passive Copper Cable Assembly, Double-ended

SFP-H10GB-CU2.5M  2.5 meters (8ft), Wire AWG = 30,SFP+ Passive Copper Cable Assembly, Double-ended

SFP-H10GB-CU3M  3 meters (9ft), Wire AWG = 30, SFP+ Passive Copper Cable Assembly, Double-ended

SFP-H10GB-CU5M  5 meters (16ft), Wire AWG = 24, SFP+ Passive Copper Cable Assembly, Double-ended

Fiberstore’s Cisco compatible SFP+ passive copper cables use proprietary encryption within the assembly’s EEPROM to prevent the warning messages that Cisco equipment may produce when non-Cisco approved cables are plugged in. This enables data center designers to prevent unwarranted concern which may be related to startups when the users see these warning messages. Fiberstore’s cables meet the industry standards for SFP+ cables and are offered in the same lengths and wire gauges as Cisco DAC assemblies, but at a significant cost reduction.

Oznake: SFP+ cable, optical transceiver, 10g sfp module

utorak, 28.04.2015.

Knowledge of 1G 10G Dual-Rate Optical Transceiver

As data centers and enterprises strive to future proof their infrastructures while maximizing their current networks, the flexibility of true dual-rate compliant interfaces eases the transition to higher Gigabit Ethernet systems. This is why the dual-rate optical transceiver has emerged (e.g. Finisar FTLX8571D3BCV and FTLX1471D3BCV). And today, I'd like to talk something about the dual-rate optical transceiver, particularly the 1G/10G dual-rate SFP+.

The following figure shows Finisar FTLX8571D3BCV compatible 1G/10G Dual-Rate SFP+ optical transceiver

As its name suggests, dual-rate optical transceiver is a kind of optical transceiver which can support two different data rates. With the dual-rate optical transceiver, users can achieve the full forward and backward compatibility of their systems with a low cost. The common dual-rate optical transceivers in the today's market is the 1G/10G dual-rate SFP+ transceiver. They are compatible with either 10 Gigabit Ethernet or 1 Gigabit Ethernet fiber interface. There are many different vendors to supply the 1G/10G dual-rate SFP+, but the standards and protocols which they complied with are the same. In general, the 1G/10G dual-rate SFP+ are designed for use in 1 Gigabit and 10 Gigabit Ethernet links over single-mode or multi-mode fiber. They are compliant with SFF-8431, IEEE 802.3-2005 10GBASE-SR/SW, 10GBASE-LR and 1000BASE-SX, 1000BASE-LX. In addition, similarjavascript:%20void(0); to most modern optical transceivers, digital diagnostics monitoring (DDM) or digital optical monitoring (DOM) functions are also available in the dual-rate SFP+, so that users can monitor many parameters of the transceiver module in real-time. Actually, with the development of technology and the increasing demands on higher Gigabit Ethernet, there are other dual-rate optical transceivers with different package styles or even at different data rates except the 1G/10G dual-rate SFP+, eg. Multi-rate XFP.

In my opinions, the emergence of dual-rate optical transceiver is mostly because of the cost consideration. From 1G to 10G, 10G to 40G, 40G to 100G, and even higher data rate, it means that the development of Gigabit Ethernet is very fast. In other words, the cost of updating the equipment keeps adding up over time. Dual-rate optical transceiver is a cost-effective solution to solve this question. For example, a 1G/10G dual-rate SFP+ can be used in both 1 Gigabit Ethernet and 10 Gigabit Ethernet links which eases the transition from 1Gb/s to 10Gb/s systems. Users can configure to operate the dual-rate optical transceivers at 1GbE or 10GbE in a switch with 10G SFP+ ports and 1G/10GSFP+ ports, but not native 1G SFP ports. And do not have to spend extra cost in buying optical transceivers only support 1G or 10G Ethernet. Of course, if you only need one type of Gigabit Ethernet, you do not need to use the dual-rate optical transceiver. So, at this time, the more cost-effective choice is to buy a corresponding single-rate optical transceiver. Nowadays, 10G Ethernet is the most commonly used type of Ethernet as the 40G and 100G are still developing. Thus, the market of 1G/10G dual-rate SFP+ is not so popular as its first emergence. But it is still applied in 1000BASE-SX 1G Ethernet, 1000BASE-LX 1G Ethernet, 10GBASE-SR/SW 10G Ethernet and 10GBASE-LR 10G Ethernet as a cost-effective solution for 1G/10G Ethernet.

From this paper, you may have an understanding of the dual-rate optical transceiver. No matter you are very familiar with the dual-rate optical transceiver or have no idea of it, I really hope that this paper is useful for you. Of course due to the limited knowledge of me, there may be some inevitable errors and omissions existing in this paper. If it is not appropriate, your critical comments are highly appreciated.

More knowledge of optical transceiver: Knowledge of Dual-rate Optical Transceiver

Oznake: FTLX8571D3BCV, Dual-rate SFP+, 1000BASE-SX, optical transceiver

četvrtak, 23.04.2015.

Do You Know Cable and Wire Markers

Cable markers are used for cable and wire identification. It is beneficial for overall project efficiency and productivity, as well as critical to the safety of those involved by using proper cable wire marker identification.

There are many different types of cable wire markers on the market. This article introduces two common types of them.

One type is Vinyl Cloth Wire Marker (shown on the left). As the name shows, it is made of vinyl cloth and is available as wire marker cards or bound in wire marker books. These cable wire markers are available in a multitude of legends and colors and also are available in solid and sequential numbers, letters, symbols and the solid NEMA colors. Meanwhile, the letters and numbers in cable wire marker books are often printed with a permanent black ink that will last and provide clear information on vinyl cloth cable wire markers. Vinyl cloth wire markers are mainly applied during wire assembly and electrical installation, and will not slip or slide.

Another is Color Coded Wire Marker (shown below) which is color coded with numeric numbers. This type of cable wire marker is removable and reusable and made of elastic materials, such as PP material. It not only saves space, but also is uneasy to fall off. Color coded wire markers are quite ideal for cable wire marking applications.

Oznake: cable marker, wire marker

srijeda, 22.04.2015.

Brief Description about Fiber Optic Wall Plate

When talking about fiber optic cabling system, the related products that come to our mind firstly are usually fiber optic cables, fiber optic transceivers, connectors or fiber optic transmission products. However, there are still many other components whose importance should not be ignored. Fiber optic wall plate, or outlet, is one of these components, and is also one of the most visible components in a fiber optic cabling system. This text will introduce you this component and offer you the Fiberstore's fiber optic wall plate solution.

Fiber optic wall plate is commonly known as fiber wall outlet, which is a flat plastic or metal plate that allows connection to fiber cable carrying optical signals, It serves as a transition point between the fiber optic cable and equipment. Fiber optic wall plates are usually mounted in or on walls, but some of them can also be mounted in floors and ceilings. Fiber optic wall plate includes one or more ports, and each port is available with an adapter.

Fiber optic wall plates come in many different types according to their adapter type, port number and faceplate interface.

According to the faceplate interface of the plates, there are bevel fiber optic wall plates and hybrid fiber optic wall plates.

Fiberstore's Fiber Optic Wall Plate Solution

Fiberstore supplies different types of fiber optic wall plates, including bevel fiber wall plates with 45° adapter plug-in/out angle and hybrid fiber wall plates/outlets. These wall plates are available with LC, SC, ST, FC adapters (or hybrid with RJ45 port) and up to 4 ports. All the wall plates are with high quality and secure to any surface, drywall, baseboard, and even modular furniture.

Oznake: fiber wall jack, fiber optic wall plate, 4 ports wall plate

utorak, 21.04.2015.

The Introduction of EXFO OTDR

Optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to characterize an optical fiber. It can help you understand the whole system you test and can be used for estimating the fiber length and overall attenuation, including splice and mated-connector losses. It can also be used to locate faults, such as breaks, and to measure optical return loss. EXFO, as a famous brand of OTDR is a leading provider of next-generation test and service assurance solutions for wireless and wireline network operators and equipment manufacturers in the global telecom industry. It offers innovative solutions for the development, installation, management and maintenance of converged, IP fixed and mobile networks. This text mainly introduce EXFO OTDR.

OTDR is at the core of EXFO’s optical expertise. Leading the OTDR market with a 48% market share and the broadest OTDR portfolio, EXFO offers an OTDR built smart for any type of network.

Based on field knowledge and 20 years of OTDR expertise, EXFO’s OTDR is designed to meet network operators’ latest requirements. EXFO’s solutions can provide measurements you can trust by combining intelligence and accuracy with user-friendliness. It can also minimize truck rolls and accelerate workflow in the field.

With numerous singlemode and multimode configurations available at several wavelengths, EXFO OTDR comes in handheld or modular formats. And I’d like to recommand you the EXFO FTB series OTDR of them, especially the FTB-200 OTDR.

EXFO FTB-200 is a Compact Platform that can deliver the processing power of a high-end platform for a variety of advanced applications. The FTB-200 can Optimize all phases of the network lifecycle and house any of EXFO’s FTB one- or two-slot modules to meet your evolving needs. Configure your platform by combining optical, transport with datacom modules to cover a wide range of applications. The FTB-200 is the perfect tool for the field by offering power, speed and modularity in a compact format.

The ODTR is the main part of the FTB-200 Compact Platform. With the functions of locating a break or similar problem in a cable run and taking a snapshot of fibers before turning an installation over to a customer, it can  help you keep a permanent record of the state that fiber at any point in time and tell installers when fibers have been damaged or altered after installation, proving where responsibility for the damage lies.

EXFO FTB-200 is just one of devices of EXFO FTB series. Fiberstore also supplies OTDR of varies famous brands, such as JDSU MTS , YOKOGAWA AQ and so on. OEM portable and handheld OTDR are also available.

Article Source: The Introduction of EXFO OTDR

Oznake: EXFO OTDR, EXFO FTB-200

ponedjeljak, 20.04.2015.

D-Link 1000BASE SFP Module Introduction

D-Link Introduction

As the leading brands of networking equipment maker, D-link devoted itself to develop, manufacture and sale Local Area Network  (LAN), broadband network, wireless network and voice network products for the digital home, Small Office/Home Office (SOHO), Small to Medium Business (SMB) and Work-group in the worldwide. Energy conservation and environmental protection are always the primary goal for D-link. There are many fiber products from D-link. Today, I will introduce an essential part of the switches product line—the D-Link SFP transceiver modules.

About D-Link's SFP Modules

D-Link's new line of GBIC and SFP transceivers represent an industry leading combination of performance and affordability. D-Link's new Gigabit transceivers are available in two form-factors: standard (GBIC) or (SFP) /mini-GBIC. SFP modules can be used and interchanged on a wide variety of switches and routers. And SFP modules also can be intermixed in combinations of 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-EX, 1000BASE-ZX, or 1000BASE-BX10-D/U on a port-by-port basis.

The D-Link DGS-712 1000BASE-T is based on the SFP Multi Source Agreement (MSA). It is compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE 802.3z and 802.3ab. The DGS-712 plugs into any standard SFP interface and allows for 1000Base-T Gigabit transmission over standard Category 5 twisted pair copper.

Key Features

• Product Type: SFP transceiver module


• Data Rate: 1Gbps


• Wavelength: N/A


• Transfer Distance: 100m


• Connector Type: RJ45


• Cable Type: Copper

D-Link 1000BASE-SX SFP

D-Link DEM-311GT 1000BASE-SX SFP 850nm transceiver module supporting dual data-rate of 1.25Gbps/1.0625Gbps and 550km transmission distance with Multi-mode Fiber (MMF). It was designed to meet Gigabit Ethernet and 1 times Fibre Channel application networking. It fully comply with the SFP Multi-Sourcing Agreement to meet the network upgrade needs.

Key Features

• Product Type: SFP transceiver module


• Data Rate: 1Gbps


• Wavelength: 850nm


• Transfer Distance: 550m


• Connector Type: LC Duplex


• Cable Type: Multi-Mode Fiber (MMF)

D-Link 1000BASE-LX SFP

D-Link DEM-310GT is the 1000BASE-LX LC SFP 1310nm transceiver module. It supports dual data-rate of 1.25Gbps/1.0625Gbps and 10km transmission distance with Single-mode Fiber (SMF). With a metal housing, it can effectively reduce Electro-Magnetic Interference (EMI) and increase durability.

Key Features

• Product Type: SFP transceiver module


• Data Rate: 1Gbps


• Wavelength: 1310nm


• Transfer Distance: 10km


• Connector Type: LC Duplex


• Cable Type: Single-Mode Fiber (SMF)

D-Link’s SFP Module Alternative Solution

Fiberstore offers third party optical transceivers. All the D-Link SFP transceiver is certified 100% compatible with D-Link switch and router product lines. Fiberstore provides D-Link DGS-712, D-Link DEM-311GT, DEM-310GT Compatible D-Link 1000BASE SFP interface. All the SFP transceiver modules are 100% tested before shipping and have a lifetime warranty.

Article Source: D-Link’s SFP Module Alternative Solution

Oznake: Cisco SFP, GLC-T, GLC-LH-SM, GLC-ZX-SM

utorak, 14.04.2015.

Overview Of Aerial Fiber Cables

Aerial Fiber Optic Cables are used very commonly in optical communication nowadays. We can even see the aerial cables hanging in the pole around our daily life. In order to adjust to the harsh outdoor environment and prevent fiber theft, the aerial fiber optic cable is made up of different materials, which is not the same as a typical fiber optic cable. Today, we will take you to learn more about the aerial fiber optic cables.

What is Aerial Fiber Optic Cable?

Aerial fiber optic cable is a type of fibre optic cables that is usually used for outside installation on poles. Due to its installation environment, the design of aerial fiber optic cable must consider to protect it from the destruction of the nature and man-made damage or theft. Aerial cable's laying method is not hard to implement as it can utilize the existing overhead pole line to install that saves more in construction costs and shortens the construction period. Aerial fiber cables are mainly used for secondary trunk level and below and usually applied to flat terrain or low fluctuation area. They are easily affected by the natural disasters, such as typhoons, ice, floods etc. as well as the influence of an outside force and the mechanical strength weakening in themselves. Therefore, the failure rate of aerial fiber optic cables are higher than the pipeline or directly buried fiber optic cables.

Types of Aerial Fiber Optic Cables

According to the installation methods, aerial fiber optic cables can be generally classified as two types: catenary wire and self-supporting. Catenary Wire Aerial Cable is regular outdoor loose tube cables that can be helically lashed to a messenger or another cable (common in CATV). Self-Supporting Aerial Cable, or All-Dielectric Self-Supporting (ADSS) cable (the common style such as Figure-8 Aerial Cables also called Figure-8 cables), has cable bonded to an insulated steel or all-dielectric messenger for support. ADSS Cables are usually made of heavier jackets and stronger metal or aramid strength members. Nowadays, the self-supporting aerial fiber optic cables are more widely used by people.

As a familiar self-supporting aerial cables, figure-8 self-supporting aerial cables are designed for easy and economical one-step installation and widely used in long-haul and building network communication. According to the structures and materials of the cables, there are several kinds of figure-8 self-supporting aerial fiber cbales in the market, such as GYTC8S, GYXTC8Y, GYXTC8S etc. We can see the differences between GYTC8S, GYXTC8Y and GYXTC8S through the detailed information below.

GYTC8S

GYTC8S is a typical self-supporting outdoor fiber optic cable. It's suitable for aerial applications while its nice moisture resistance performance and crush resistance performance are suitable for duct and buried method. The mental strength member is made up of stranded wires as the supporting part that are completed with a polyethylene sheath to be figure 8 structure. Corrugated steel tape armored and polyethylene outer sheath provide the crush resistance and gun shot resistance features. As the central strength, the steel-wire strength member improves the tensile strength. In addition, it is surrounded by the loose tube and water blocking system.

Features:

• Excellent mechanical and environmental performance


• Small cable diameter, self-supporting, easily to install


• Low dispersion and attenuation


• Corrugated steel tape armored and polyethylene outer sheath providing crush resistance and gun shot resistance features


• Cross section shows figure 8


• Stranded wires as self-supporting member providing excellent strain performance and convenient installation


• Steel-wire strength member provides good tensility, ensures tensile strength


• Water blocking system to improve the waterproof ability

GYXTC8Y

GYXTC8Y is a light self-supporting cable with the figure-8 shape in the cross section that is suitable for installation in aerial environment for long haul communications. High tensile strength of stranded wires meet the requirement of self-supporting. It can also be used for duct and buried method. The mental strength member is similar to the GYTC8S. Steel wires and loose tubes filled with waterproof compound to ensure compact and longitudinally water blocking.

Features:

• Excellent mechanical and environmental performance


• Small cable diameter, light cable weight, self-supporting, easily to install


• Low dispersion and attenuation


• Medium density polyethylene jacket: low friction installation, excellent protection from environmental hazards


• Stainless steel or galvanized steel self-supporting


• Load-supporting element is made of zinc-coated wire provides high resistance grade to long tension


• High strength loose tube that is hydrolysis resistant


• Light self-supporting cable with the figure-8 shape
  
  

GYXTC8S

GYXTC8S is also suitable for installation in aerial environment for long-haul communications. This kind of figure-8 aerial cables is usually for 4-core to 12-core types. The water resistant tape provides water tight property. Corrugated steel tape and the polyethylene outer sheath provide crush resistance and gun shot resistance. The figure-8 steel wire works as self-supporting member providing excellent strain performance and convenient installation.

Features:

• With small cable diameter, light cable weight, self-support


• Excellent mechanical and environmental properties


• Proper design and precise control for fiber excess length


• Corrugated steel tape and the polyethylene outer sheath ensure crush resistance and gun shot resistance


• The water resistant tape provides water tight property

Article Source: Aerial Fiber Optic Cables Tutorial

Oznake: aerial fiber cables, aerial drop cable

ponedjeljak, 13.04.2015.

40G QSFP+ Module is a Great Progress for Telecom Industry

Are you still worrying about your slow network speed? No, there is a high speed transceiver. 40G QSFP+ transceivers make you enjoy the better transmission communications. As an essential component to support 40G network, QSFP+ modules which allow data rates of 4×10 Gbit/s to be emerged. This article is to introduce the 40G QSFP+ modules, include 40G QSFP+ cables and 40G QSFP+ transceivers. Fiberstore supplies high quality QSFP+ transceivers which are used primarily for short reach applications in switches, routers, and data center equipment.

What’s 40G QSFP+ Module?

The 40G QSFP+ module is a compact, hot-pluggable transceiver used for data communications applications. It supports Serial Attached SCSI, 40G Ethernet, QDR (40G) and FDR (56G) Infiniband and other communications standards. Compared with SFP+ modules, QSFP+ transceiver increases the port-density of 3-4 times.

Main Products: 40G-SR QSFP+ & 40G-LR QSFP Modules on Fiberstore

The 40GBASE-SR4 is based on MMF (Multi-Mode Fiber) optic cable which is cheaper than SMF (Single-Mode Fiber) optic cable. It is able to transmit light in a relatively short distance. 40G QSFP+ SR4 transmission distance is between 100m and 150m.

The 40GBASE-LR4 with a pair of SMF optic cable provides two SC fiber optic connectors for connection. 40G QSFP+LR4 transmission distance is over 10km.

Table1: Fiberstore’s 40G QSFP+ modules order information:

• QSFP-H40G-CU1M, 40GBASE QSFP+ Passive Copper Direct Attach Cable, AWG30, 1m, 0-70


• QSFP-H40G-CU3M, 40GBASE QSFP+ Passive Copper Direct Attach Cable, AWG30, 3m, 0-70


• QSFP-H40G-CU5M, 40GBASE QSFP+ Passive Copper Direct Attach Cable, AWG30, 5m, 0-70


• QSFP-H40G-CU7M, 40GBASE QSFP+ Active Copper Direct Attach Cable, AWG30, 7m, 0-70


• QSFP-4SFP10G-CU1M, QSFP+ to 4 SFP+ Passive Copper Direct Attach Breakout Cable, AWG 30, 1m, 0-70


• QSFP-4SFP10G-CU3M, QSFP+ to 4 SFP+ Passive Copper Direct Attach Breakout Cable, AWG 30, 3m, 0-70


• QSFP-4SFP10G-CU5M, QSFP+ to 4 SFP+ Passive Copper Direct Attach Breakout Cable, AWG 30, 5m, 0-70

What are features of 40G QSFP+ Modules?

1). Hot-pluggable input/output device that plugs into a 40 Gigabit Ethernet QSFP port

2). High-speed electrical interface compliant to the IEEE 802.3ba standard

3). Certified and tested on QSFP 40G ports for superior performance, quality, and reliability

4). Digital Diagnostics Monitoring Interface

Besides its high-density applications, QSFP+ modules provide 40Gb/s Ethernet data rates over MMF (Multi-Mode Fiber) optic cable and SMF (Single-Mode Fiber) optic cable. QSFP+modules take up very little space on a switch or server interface, allowing vendors to provide multiple QSFP+ ports in the same space.

How about the 40G QSFP+ modules’ Market?

With the increasing demands of global Internet traffic, higher requirements are concentrated on the network communications transmission capacity. The market research shows that the whole communication network is in urgent need of the optical transmission bandwidth upgrade from the original 10G to 40G and 100G. Data Center Construction requires the higher bandwidth and port-density for modules. Therefore, 40G QSFP+ modules have a huge overseas sales market, such as Facebook, Google, Cisco and so on. It means that QSFP+ transceiver modules have a good future.

About Fiberstore:

Fiberstore is devoted to design, manufacture, and sell a broad portfolio of optical communication products, including Cisco QSFP+ modules, QSFP+& CFP transceivers, 40G QSFP+ cables and transceivers, QSFP+ loopback transceivers, and QSFP+ breakout cables.

četvrtak, 09.04.2015.

Wall Plates Overview

Wall plates that you see every day, in just about every room, but you think about them not very often. There is a good chance you are not aware of the sheer variety of options out there when it comes to customizing your wall plates. Everyone knows about the traditional electrical wall plate, but that's just the tip of the iceberg. There are telephone wall plates, gang wall plates, RJ45 face plate and keystone wall plates, among other A/V and data options. There are fiber optic wall plate and network face plate that are customizable in pretty much any way you can think of. This paper can give you a comprehensive understanding of wall plates.

Introduction of Wall Plates

Wall plate, or wallplate, is a highly configurable wall plate outlet products, available in both single-gang and double-gang configurations. It is designed for use within Fiber-To-The-Desk (FTTD) applications but may also be used to connect telephones and other peripherals to a network.

Wall plates protect electrical outlets and accommodate a variety of cabling solutions such as coaxial, twisted pair, fiber, and HDMI cables. Wall plates protect your network by keeping your connections safe from dust, physical damage, and foreign objects. The following figure shows us a RJ45 wall plate.

A variety of fiber and copper adapters may be loaded in the wall plate outlet in any configuration. These adapters may be purchased individually or preloaded into the wall plate outlet. The wall plate outlet is also available with angled faces that allow fiber connectors and jumpers(i.e. fiber patch cables/cords) to easily transition and exit down the wall, a 4 port wall plate (4-Port SC interface) as shown in the figure below.

According to different networks, there are mainly two types of wall plates: fiber optic network wall plates, copper network wall plates.

Fiber Optic Network Wall Plates

Fiber optic network wall plates, or fiber optic wall plates, are wall plates that designed to bring fiber to the desk and widely used in multi-floor and high building, including bevel fiber optic wall plates with 45° adapter plug-in/out angle and hybrid fiber optic wall plates/outlets. The wall plates are available with LC, SC, ST, FC adapters. They can be applied in FTTH access, telecommunication, CATV, data communication networks etc.

Copper Network Wall Plates

Copper network wall plates, or network face plates and network outlet faceplates, are something everyone has a passing familiarity with, but few people know how many different varieties there are. In addition to your usual 1, 2, and 3 gang duplex receptacles and toggle switch covers, there are also duplex/phone combinations; face plates for VGA, Cat5e, Cat6, S-Video, RCA and BNC connector modules; and red engraved plates for emergency use.

Outlet faceplates use a double gang faceplate for standard administrative outlet locations, with connectors for all copper and fiber optic cable. Standard administrative outlets may, by specific user request, use single gang outlet faceplates in conjunction with a reducing ring. For single gang outlet boxes, use a single gang outlet faceplate with appropriate connector locations and, if required, mounting lugs for wall phones. Outlet faceplate must include two blanks position for future applications.

Reference Document: Wall Plates Tutorial

Oznake: Wall Plates, fiber optic wall plates, network faceplates

utorak, 07.04.2015.

The Recognition of Optical Transceiver

Optical Transceiver Overview

What is an Optical Transceiver Module?

A fiber optical transceiver is a device that can send and receive optical information. By using an optical transceiver, network spend less space and steer clear of the necessity of getting a transmitter and receiver in the network. Able to transmit information further and faster than older models, the more recent transceivers are utilized and appearance, creating more compact, smaller sized modules than ever before.

How does it work?

A fiber optic transceiver is a accessory acclimated to forward and accept optical information. There are a number of different components on these devices, including a light source and an electrical component. The transceiver has two ends, one that an optical cable plugs into and accession for abutting an electrical device. Fiber optic transceivers combine a fiber optic transmitter and a fiber optic receiver in a single module. They are arranged in parallel so that they can operate independently of each other. Both the receiver and the transmitter have their own circuitry and can handle transmissions in both directions. In fiber optic data links, the transmitter converts an electrical signal into an optical signal, which is coupled with a connector and transmitted through a fiber optic cable. The light from the end of the cable is coupled to a receiver, where a detector converts the light back into an electrical signal. Either a light emitting diode (LED) or a laser diode is used as the light source.

Principle of Optical Transceiver Modules

Optical transceiver generally includes both a transmitter and a receiver in a single module. The transmitter and receiver are arranged in parallel so that they can operate independently of each other. Both the receiver and the transmitter have their own circuitry so that they can handle transmissions in both directions. The transmitter takes an electrical input and converts it to an optical output from a laser diode or LED. The light from the transmitter is coupled into the fiber with a connector and is transmitted through the fiber optic cable plant. The light from the end of the fiber is coupled to a receiver where a detector converts the light into an electrical signal which is then conditioned properly for use by the receiving equipment.

Application of Optical Transceiver Modules

Optical transceiver, essentially just completed the converted of data between different media, can realize the connection between two switches or computers in the 0-120km distance. Its main function is to achieve the conversion between optical-electrical and electrical-optical, including optical power control, modulation transmission, signal detection, IV conversion and limiting amplifier decision regeneration. In addition, there are some functions like security information query, TX-disable. Here is a summary in the practical application.

1. Optical transceivers can interconnect with switches.


2. Optical transceivers can interconnect between the switch and the computer.


3. Optical transceivers can interconnect with computers.


4. Optical transceivers can act as the transmission repeater.
   When the actual transfer distance exceeds the nominal transmission distance of the transceiver, in particular, the actual transfer distance exceeds 120km alerts, with 2 sets transceiver back to back in the case of on-site conditions allow, repeaters or the use of "optical-optical" conversiona relay, is a very cost-effective solution.


5. Optical transceivers can offer conversion between single-mode and multimode fiber connection.
   
   When the networks appear to need a single multimode fiber connection, you can use a multimode transceiver and a single-mode transceiver back-to-back connections, which can solve the problem of single multimode fiber converted.


6. Optical transceivers can offer WDM transmission.
   
   The lack of resources of long-distance fiber optic cable, in order to improve the utilization rate of the fiber optic cable, and reduce the cost, transceiver and wavelength division multiplexer (WDM multiplexer) with the use of two-way information on the same fiber transmission.

Optical Transceiver modules can be classified according to the following aspects.

1. Optical Fiber Type

Single-mode fiber transceiver and Multimode fiber transceiver. The single-mode version has a transmission distance of 20 to 120 km, while the multimode one's is 2 to 5 km. Due to the different transmission distance, the transceivers' transmit power, receiver sensitivity and the use of wavelength will be different.

2. Optical Fiber Count

Simplex fiber transceiver and Duplex fiber transceiver. The simplex version receives the data sent in a single fiber transmission, While the duplex one receives data transmitted on a dual fiber transmission.By definition, single fiber devices can save half of the fiber, a fiber that is in the receive and transmit data, where the fiber is very applicable to resource constraints. These products use the wavelength division multiplexing techniques, mostly using the wavelength 1310nm and 1550nm.

3. Transmission Rate

Transmission rate refers to the number of gigabits transmitted per second, per unit of Mbps or Gbps. Optical modules cover the following main rate: low rates, Fast, Gigabit, 1.25G, 2.5G, 4.25G, 4.9G, 6G, 8G, 10G and 40G.

4. Package

SFP, SFP+, GBIC, XFP, XENPAK, X2, 1X9, SFF, 200/3000pin, XPAK, etc.

Fiberstore Optical Transceiver Solution

Fiberstore is a worldwide leading manufacturer & supplier of compatible fiber optical transceivers. We produce and stock for a full range of transceivers such as SFP Plus (SFP+), X2, XENPAK, XFP, SFP, GBIC. In the market, there are many brands of fiber optic transceiver, HP, Cisco, NETGEAR, Finisar, Dell, etc. The following table is the order information of HP SFP transceiver:

• SFP-1GT-1MA-HPHP, JD089B X120 compatible 1000BASE-T SFP Copper RJ45 100m


• SFP-1G85-5MA-HP, HP JD118B X120 compatible 1000BASE-SX SFP 850nm 550m DDM MMF


• SFP-1G31-10A-HP, HP JD119B X120 compatible 1000BASE-LX SFP 1310nm 10km SMF


• SFP-1G85-5ME-HP, HP J4858B X121 compatible 1000BASE-SX SFP 850nm 550m MMF


• SFP-1G85-5MF-HP, HP J4858C X121 compatible 1000BASE-SX SFP 850nm 550m MMF


• SFP-1GT-1MD-HP, HP J8177C X121 compatible 1000BASE-T SFP Copper RJ45 100m


• SFP-1G31-10F-HP, HP J4859C X121 compatible 1000BASE-LX SFP 1310nm 10km SFP SMF


• BLSFP-1G34-10-HP, HP J9143B X122 compatible 1000BASE 1310nmTX/1490nmRX BIDI SFP 10km SMF

Oznake: optical transceiver, HP SFP

srijeda, 01.04.2015.

Fiberstore Compatible 1000BASE-LX/LH SFP modules

1000BASE-LX/LH was standardized six years after the initial gigabit fiber versions as part of the Ethernet in the First Mile task group. It is very similar to 1000BASE-LX, but achieves longer distances up to 10 km over a pair of single-mode fiber due to higher quality optics. The 1000BASE-LX/LH SFP module, compatible with the IEEE 802.3z 1000BASE-LX standard, operates on standard single-mode fiber-optic link spans of up to 10 km and up to 550 m on any multimode fibers. Duplex LC/PC connector.

Features

• Compliant with SFP MSA standard


• Compliant with IEEE 802.3z


• +3.3V single power supply and TTL Logic Interface


• 10km with 9/125 µm SMF


• 1310nm FP laser and PIN photodetector for 10km transmission


• Hot-pluggable SFP footprint duplex LC connector Interface


• Class 1 FDA and IEC60825-1 Laser Safety Compliant


• Duplex LC connector


• Compliant with SFF-8472


• ROHS compliant


• Average Output Power:-9~ -3dBm


• Receiver Sensitivity:-21dBm

Applications

• 1000BASE-LX/LH Ethernet


• Data storage networks

Fiberstore 1000Base-LX/LH SFP module over single-mode fiber, which is a high performance and cost effective transceiver. It is designed to meet Gigabit Ethernet (1000Base) application. The transceiver consists two sections: the transmitter section consists of a high reliability 1310nm FP LD with monitor photo detector (MPD) in eye safety; the receiver section consists of a high-speed InGaAs PIN photodiode (PD) and trans-impedance preamplifier. The output of the PD drives the post-amplification, quantizing, and optical signal detection circuits. The receiver is built in the LOS monitoring function. For further information, please see SFP MSA and SFF-8472 standard.

With plenty experience in interoperability with 3rd party standard based network equipment such as Cisco, HP, Finisar, Juniper, Netgear, 3 Com, Alcatel-Lucent, D-LINK, Extreme, and HuaWei, Fiberstore’s fiber optic transceiver are able to fulfill enterprises, service providers, telecom operators and SAN providers to build and fulfill their existing and future network expansions.

Compatible Fiber Optic Transceiver List

To save more money, We suggest that compatible 3rd transceiver modules may be another good choice however, you should make sure that your vendor is reliable. Fiberstore's SFP transceivers are 100% compatible with major brands, they are backed by a lifetime warranty so that you can buy with confidence. Additionally, customize SFP transceivers to fit your specific requirements are available. If you have any requirement of transceivers, Fiberstore will be a good choice for you.

Article Source: Compatible 1000BASE-LX/LH SFP

Oznake: 1000BASE-LX/LH SFP, E1MG-LX-OM, GLC-LH-SM, GLC-LH-SMD, 320-2879, Extreme 10052, FTLF1318P3BTL, JD119B, J4859C, EX-SFP-1GE-LX, JX-SFP-1GE-LX, AGM732F

Fluke 117 Electrician's Multimeter Review

Fluke 117 Overview

The Fluke 117 is simply amazing multimeter for demanding settings like hospitals and schools and commercial buildings. The Fluke 117 multimeter includes integrated non-contact voltage detection to avoid secondary voltage detection tools for that purpose.

With its integrated non-contact voltage detection and the AutoV/LoZ function preventing false readings caused by ghost voltage, the Fluke 117 Electrician's Multimeter is the ideal multimeter for electricians. The Fluke 117 includes integrated non-contact voltage detection to help get the job done faster.

Compared to other Fluke multimeters it’s quite smaller and compact. The Fluke 117 weights about 400 grams. The Fluke 117 is ergonomically designed to give you a comfort hand holding with a compact size which provides an easy one handed operation off the device.

• Built-in VoltAlert sensing circuit for non contact voltage detection


• AutoVolT (Auto-V) automatically determines ac/dc voltage selection


• LoZ: Low impedance input allows added measurement confidence against ghost voltage


• Large white LED backlight for excellent viewing in all working conditions


• True-rms for accurate measurements on non-linear loads


• Quality resistance, continuity, frequency and capacitance functions


• Min/Max/Average to record signal fluctuations


• CAT III 600 V safety rated

By DeusEx (United States)

The Fluke 110 series is Fluke's cheapest "Fluke Branded" line. It's a Fluke so you know you're getting an instrument worth its salt. The 117 is the most feature packed and highest priced in the series. It's a smaller form factor than some of the other Fluke meters. It features all the traditional fields that you'll find on most modern DMMs. Volts AC (True RMS) & DC both to 600V. A full mV range. Resistance, continuity, diode check, capacitence, and frequency. It features Amps AC & DC to 10A however it lacks a mV and uV range since this is an electrician's meter, not an electronics meter. Two more modes it offers are volt alert and LoZ.

By Allan York ( Gardnerville, NV USA )

I bought the Fluke 117 Multimeter as a replacement for my old and very tired Fluke 77 Multimeter. This is a great meter for the price, I love all the new features Fluke has put in. If I have any gripe it's that the leads don't stow on the back like the model 77. If you need a quality Multimeter at a decent price grab one of these.

Where to Buy Reliable Quality Network Test Equipment

To find more common used fiber optic testers from Fiberstore, include optical multimeter, visual fault locator, RJ45 tester, underground wire tracer, bit error rate tester and phone line tester. Fiberstore provide reliable quality fiber  testers in accordance with telecom, military, aerospace and other industry standards.

Oznake: Fluke 117, Fluke 117 Multimeter

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