Multiplexer and Demultiplexer Based on CWDM

Before the introduction of CWDM multiplexer, it is necessary to mention the CWDM technology.

Originally, the term “coarse wavelength division multiplexing” (CWDM) was fairly generic, and meant a number of different things. In general, these things shared the fact that the choice of channel spacings and frequency stability was such that erbium-doped fiber amplifier (EDFA) could not be utilized. Prior to the relatively recent ITU standardization of the term, one common meaning for CWDM meant two (or possibly more) signals multiplexed onto a single fiber, where one signal was in the 1550 nm band, and the other in the 1310 nm band.

CWDM multiplexer is based on CWDM technology. It is a device to allow multiple optical signals at different wavelengths to pass through a single optical fiber strand. For convenience, we usually used “Mux” instead of “multiplexer” , and “Demux” instead of “deultiplexer”.

Typically, Multiplexer and Deultiplexer (Mux and Demux) are integrated in a entirety. CWDM Mux/Demux modules have 2/4/8/16/18 channels commonly, while 5/9 channels uncommonly. In FiberStore, we supply all channel CWDM Mux and Demux. Three single fiber or dual fiber connection for CWDM Mux/Demux are available. Our standard CWDM Mux/Demux package types are Plastic ABS module cassette, 19″ rack mountable box or LGX box. No matter what kind of connectors, like FC, ST, SC, LC, etc., all are available here, and we can also mix connectors on one device.

To know more about the CWDM Mux products, let me introduce one of the CWDM Mux/Demux modules to you. Here is a 18 Channels CWDM Mux and Demux by dual fiber with LGX Metal Box.

Key Features
1.Flexibility and little LGX Standard Metal Box configuration
2.Mux and Demux combined in one LGX Metal Box
3.Compliant to ITU-T G.694.2 CWDM standard
4.Accepts any data rate and any protocol on any port up to 10 Gbps, also 40 Gbps (DPSK, DQPSK) and 100 Gbps (DPQPSK)
5.Fully transparent at all data rates and protocols from T1 to 40 Gbps Completely passive, no power supply needed
6.Simple to install, requires no configuration or maintenance
8.Low-cost transceivers applicable, existing equipment can still be used ISO 9001 manufacturing facility
9.Lifetime Product Warranty

Applications

All Enterprises and Carrier with Fiber Optic Infrastructure Transmit additional applications via existing lines Connect buildings to CWDM campus ring Connect Field offices to central office Ideal solution for metro-core, metro-access and enterprises

Sample pictures

Article Source : http://www.fiberstore.com/

PLC Splitter Production and Packaging

With the recovery of optical fiber communication industry and the development of FTTX, the spring of fiber optic splitter market is coming.

There are two types of optical splitter, which are Fused fiber splitter and PLC splitter. PLC splitter is a hot research today, with a good prospect of application. PLC splitter package, however, is the difficulty in manufacturing.

The PLC splitter Package refers to the planar waveguide splitter on the light guide path (waveguide) with the fiber in the fiber array aligned one by one, and then stick with specific adhesive (such as epoxy glue) together with the technology. Wherein the alignment accuracy of the PLC splitter and an optical fiber array is the key technology. PLC splitter package involves a six-dimensional optical fiber array and optical waveguides in close alignment difficult. When the manual, the drawback is the low efficiency, poor reproducibility, human factors and is difficult to achieve large-scale production.

PLC splitter Production
PLC splitter using semiconductor technology (lithography, etching, developing technology) production. Multi-channel optical fiber array and the optical waveguide array is located on the upper surface of the chip, branching function is integrated on-chip is a chip on the splitter 1,1; Then, the ends of the chip, respectively coupling the input terminal and an output terminal package.

Compared with Fused Splitter, PLC splitter has these advantages: (1) loss wavelength is not sensitive to light, to meet the different wavelengths of the transmission needs. (2) spectroscopic uniform signal can be uniformly allocated to the user. (3) compact structure, small size, can be installed directly in the various existing junction box, without leaving a lot of space for installation. (4) only a single device shunt channel can achieve much more than 32 channels. (5) The multi-channel, low cost, stars ones more and more obvious cost advantages.

At the same time, the main drawback of the PLC splitter: (1) device fabrication process complexity, high technical threshold, the chip by several foreign companies to monopolize the domestic bulk package produced by very few companies. (2) relative to the higher cost of Fused Splitter more at a disadvantage, especially in the low channel splitter.

PLC splitter Packaging Technology
PLC splitter package process includes coupling alignment and bonding operations. Coupling of the PLC splitter chip and the optical fiber array is aligned with both manual and automated, and they depend on the hardware with the six-dimensional precision trimming frame, the light source, power meter, microscopic observation system, while the most commonly used are self-aligned , it is through the optical power feedback closed-loop control is formed, and therefore high coupling efficiency docking accuracy and docking.

PLC splitter has 8 channels and each channel must be accurately aligned to ensure that the relative position between the respective channels due to the manufacturing process of the waveguide chip and an optical fiber array (FA), so only the PLC splitter and the first channel of the FA and 8-channel simultaneous alignment can ensure that other channel aligned, thus reducing the complexity of the package. The most important in the packaging operation at the technical difficulty is the highest coupling alignment operation, it comprises two steps First Harmonic precise alignment. First tune the purpose is to enable the waveguide to light through; the purpose of precise alignment is precise positioning of the completion of the preferred optical power of the coupling point, and it is realized by the program to search the maximum optical power.

Filter-based Wavelength Division Multiplexer

Filter-based Wavelength Division Multiplexer (Filter WDM, or FWDM) is based on the mature membrane filter technology, with a wide channel bandwidth, low insertion loss, high channel isolation degrees and high environmental stability and reliability. It is widely used in single-mode fiber optic communication systems and DFA.

FTTX Filter WDM module is based on Thin Film Filter (TFF) technology. The Filter-Based WDM is extensively used in EDFA, Raman amplifiers, WDM networks and fiber optics instrumentation. The FWDM series is based on environmentally stable Thin Film Filters technology. The device combines or separates light at different wavelengths in a wide wavelength range. They offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability. In FiberStore, Filter-Based WDM product family covers following wavelength windows commonly used in optical fiber systems: 1310/1550nm (for WDM or DWDM optical communications), 1480/1550nm (for high-power DWDM optical amplifier and EDFA), 1510/1550nm (for DWDM multi-channel optical networks) and 980/1550nm (for high performance DWDM optical amplifier and EDFA) and 1310/1490/1550nm (for PON, FTTX and test instrument).

1310/1490/1550 FTTX FWDM is based on filter based platform for optical device. This multiplexer features ultra low loss, high isolation, and high reliability.

FiberStore 1490/1310/1550nm FTTH FWDM can realize the multiplexing and de-multiplexing of two communication signal 1490/1310 and 1550nm. It can expand the capacity of a single fiber to achieve bidirectional communication, so that widely used in optical network upgrade and expansion, or introduce new comprehensive business etc.

As you might know, GEPON system itself works on 1310/1490, so CATV signal here is delivered over same fiber using 1550nm, and FWDM is a place where all this get’s “mixed”.

Application

Mechanical Drawing

Sample Pictures

Article source : http://www.fiberstore.com/

Optical add-drop multiplexer Wikipedia

An optical add-drop multiplexer (OADM) is a device used in wavelength-division multiplexing systems for multiplexing and routing different channels of light into or out of a single mode fiber (SMF). This is a type of optical node, which is generally used for the construction of optical telecommunications networks. “Add” and “drop” here refer to the capability of the device to add one or more new wavelength channels to an existing multi-wavelength WDM signal, and/or to drop (remove) one or more channels, passing those signals to another network path. An OADM may be considered to be a specific type of optical cross-connect.

A traditional OADM consists of three stages: an optical demultiplexer, an optical multiplexer, and between them a method of reconfiguring the paths between the optical demultiplexer, the optical multiplexer and a set of ports for adding and dropping signals. The optical demultiplexer separates wavelengths in an input fiber onto ports. The reconfiguration can be achieved by a fiber patch panel or by optical switches which direct the wavelengths to the optical multiplexer or to drop ports. The optical multiplexer multiplexes the wavelength channels that are to continue on from demultipexer ports with those from the add ports, onto a single output fiber.

All the light paths that directly pass an OADM are termed cut-through lightpaths, while those that are added or dropped at the OADM node are termed added/dropped lightpaths. An OADM with remotely reconfigurable optical switches (for example 1×2) in the middle stage is called a reconfigurable OADM (ROADM). Ones without this feature are known as fixed OADMs. While the term OADM applies to both types, it is often used interchangeably with ROADM.

Physically, there are several ways to realize an OADM. There are a variety of multiplexer and demultiplexer technologies including thin film filters, fiber Bragg gratings with optical circulators, free space grating devices and integrated planar arrayed waveguide gratings. The switching or reconfiguration functions range from the manual fiber patch panel to a variety of switching technologies including microelectromechanical systems (MEMS), liquid crystal and thermo-optic switches in planar waveguide circuits.

Although both have add/drop functionality, OADMs are distinct from add-drop multiplexers. The former function in the photonic domain under wavelength-division multiplexing, while the latter are implicitly considered to function in the traditional SONET/SDH networks.

Article source : Wikipedia.org

Optical attenuator Wikipedia

An optical attenuator is a device used to reduce the power level of an optical signal, either in free space or in an optical fiber. The basic types of optical attenuators are fixed, step-wise variable, and continuously variable.

Applications

Fiber optic attenuator is used in applications where the optical signal is too strong and needs to be reduced. Optical attenuators are commonly used in fiber optic communications, either to test power level margins by temporarily adding a calibrated amount of signal loss, or installed permanently to properly match transmitter and receiver levels.

For example, in a multi-wavelength fiber optic system, you need to equalize the optical channel strength so that all the channels have similar power levels. This means to reduce stronger channels’ powers to match lower power channels. Another example is when the received optical power is so strong that it saturates the receiver, you need an optical attenuator to reduce the power so the receiver can detect the signal correctly.

Fiber optic attenuators are usually used in two scenarios. The first case is in fiber optic power level testing. Optical attenuators are used to temporarily add a calibrated amount of signal loss in order to test the power level margins in a fiber optic communication system. In the second case, optical attenuators are permanently installed in a fiber optic communication link to properly match transmitter and receiver optical signal levels.

Optical attenuators are typically classified as fixed or variable optical attenuator.

Fixed optical attenuators used in fiber optic systems may use a variety of principles for their functioning. Preferred attenuators use either doped fibers, or mis-aligned splices, since both of these are reliable and inexpensive. Inline style attenuators are incorporated into patch cables. The alternative build out style attenuator is a small male-female adapter that can be added on to other cables.

Variable optical attenuators generally use a variable neutral density filter. Despite relatively high cost, this arrangement has the advantages of being stable, wavelength insensitive, mode insensitive, and offering a large dynamic range. Other schemes such as LCD, variable air gap etc. have been tried over the years, but with limited success.

For precise testing purposes, engineers have also designed instrument type variable optical attenuators. They have high attenuation ranges, such as from 0.5 dB to 70dB. They also have very fine resolution, such as 0.01dB. This is critical for accurate testing.

Variable optical attenuator instrument calibration is a major issue. The user typically would like an absolute port to port calibration. Also, calibration should usually be at a number of wavelengths and power levels, since the device is not always linear. However a number of instruments do not in fact offer these basic features, presumably in an attempt to reduce cost. The most accurate variable attenuator instruments have thousands of calibration points, resulting in excellent overall accuracy in use.

Erbium-doped Fiber Amplifier

Optical amplifier is an optical communication system device. It amplifies an optical signal directly, without converting an optical signal into an electrical signal.

Erbium-doped fiber amplifier (EDFA) is the first successful optical amplifier invented by the UK Southampton University and JP Tohoku University. It is one of the greatest invention in optical communication. Erbium-doped optical fiber is incorporated a small amount of a rare earth element erbium (Er) ion. It is the core of the EDFA. From the late 1980s, the EDFA research has been making a major breakthrough continuously. As WDM technology greatly increases the capacity of optical communication, it becomes the most widely used optical amplifier device in the optical fiber communication.

Principle
EDFA is constituted by a period of erbium-doped fiber (about 10-30m) and pump light source. The stimulated emission of erbium-doped fiber under the action of the pump light source (wavelength 980nm or 1480nm), and the radiation of light varies with the change of the input optical signal, which is equivalent to the input optical signal the amplification. Studies have shown that the erbium-doped fiber amplifiers are typically 15-40dB of gain can be obtained, and the distance relay can be increased on the basis of the original more than 100km. So, why did scientists use erbium-doped fiber element to increase the intensity of light? We know that erbium is a kind of rare earth elements, and rare earth elements has its special structural features. Over the years, people have been using the method which doped rare earth elements in optical devices to improve the performance of optics, so this is not an accidental factor. In addition, why is the pump source wavelength chosen from 980nm or 1480nm? In fact, the pumping light source wavelength could be 520 nm, 650nm, 980nm and 1480nm. But the practice has proved that the 1480nm wavelength pumping light source laser efficiency is the highest, followed by the 980nm wavelength.

Advantages
The main advantage of EDFA is a high gain, wide bandwidth, high output power, high pumping efficiency, low insertion loss, and not sensitive to the polarization state.
1. Its amplifying area happens to coincide with the minimum loss area of single-mode fiber. This reduces the transmission loss of the light signal which can be transmitted relatively far distance.
2. It is transparent to digital signal format and data rate.
3. Its amplification bandwidth is so wide that dozens or even hundreds of channels can be transmitted in the same fiber.
4. It has low noise figure close to the quantum limit, which means that multiple amplifiers can be cascaded.
5. Its gain saturation recovery time is long, and has a very small crosstalk between the respective channels.

Applications
When EDFA is used in conventional optical digital communication system applications, we can save a lot of optical repeaters, and the distance relay could also be increased significantly, which is of great significance for the long-haul fiber optic cable trunking systems.

The main applications include:
1. It can be used as the light distance amplifier. Traditional electronic fiber optic repeater has many limitations. Such as a digital signal and the analog signal conversion, the repeater should be changed accordingly; repeater changes after the device is changed from a low rate to a high rate; only transmit the same wavelength of the optical signal, and the complex structure, expensive, and so on. Erbium-doped fiber amplifier to overcome these shortcomings, not only do not have to change with the change in the way of the signal, and equipment expansion or for optical wavelength division multiplexing, no need to replace.

2. It can be used for the transmitter amplifier and the optical receiver preamplifier. For the rear of the optical transmitter amplifier, the transmit power of the laser is increased from 0dB to +10 db. Optical receiver preamplifier, the sensitivity can also be greatly improved. Therefore, only the line of 1-2 erbium-doped amplifier, the signal transmission distance can be increased to 100-200km. In addition, the erbium-doped fiber amplifier problem to be solved the unique advantages of the erbium-doped fiber amplifier has been recognized by the world, and to be more widely used. However, the erbium-doped fiber amplifier there are also some limitations. For example, in the long-distance communication can not drop channel, each station business contacts is more difficult, not easy to find fault, pumping light source life is not long, as the optical fiber communication technology continues to progress, these problems will be satisfactorily resolved.

What is Optical Fiber Identifier

Fiber optic identifier can be a very incredibly sensitive photodetector. It can be some sort of linens bending, where many lightweight radiation is on the linens center. This lightweight radiation will likely be diagnosed by means of the fiber identification, technological workers in line with most of these signals that generally is a sole linens from the multi-core optical fiber or maybe patch panel acknowledged on the different available linens.

Fiber identifier can certainly diagnose this rank to way on the lightweight which is not going to have an impact on this sign. In order to make the job much easier, commonly giving conclude towards test out indicate modulated in 270Hz, 1000Hz or maybe 2000Hz, is is treated in a specific fiber. The vast majority of the optical fiber identifier with the managing wavelength is connected with 1310nm or maybe 1550nm single-mode optical fiber. Optical fiber identifier incorporate the use of this macro bending technological – how to name this way to electric power on the sign linens along with the linens within test out on the net.

Optical fiber identifier is usually an necessary setting up in addition to repair musical instrument which will distinguish this optical fiber by means of revealing this optical impulses fed throughout the converter cables. Within this practice, the fiber optic identifier complete not any cause harm to or maybe destruction of this linens cable connection and it in addition does not have to start this linens for the splice position intended for ID or maybe interrupting this services.

Optical fiber identifier is an essential installation and maintenance instrument which can identify the optical fiber by detecting the optical signals transmitted through the cables, during this process the fiber optic identifier do no harm or damage to the fiber cable and it also do not need opening the fiber at the splice point for identification or interrupting the service.

FiberStore now supplies JW3306B Optical Fiber Identifier and AFI400 Optical Fiber Identifier. The AFI400 is a kind of high quality optical fiber identifier which can indicate the signl direction in fiber without disrupting traffic, and it is suitable for dia.0.25mm/0.9mm/3.0mm fiber, and no need to replace the clamp block, more convenient than others.

Features
1. Support to detect optical signals without disrupting traffic
2. Based on non-destructive technology
3. Indicate the signal direction in fiber
4. Detect a variety of optical tones, 270Hz, 1kHz and 2kHz
5. Suitable for 0.25mm, 0.9mm, 3.0mm fiber, and no need to replace the clamp block, more convenient than others
6. Build in visible fault locator 1mW or 10mW optional;
7. Battery low indication;
8. Powered by 2 units of 1.5V AA alkaline batteries;
10. One year guarantee

FiberStore is specializing in supplying fiber optic components and network equipments, and we are trying to complete this system. We provide one year warranty for this optical fiber identifier. If you have any problems or special requirement or want to buy this high performance optical fiber identifier AFI400 at a large quantity, please feel free to contact us. We will try our best to provide you the best service.

Article source: FiberStore.com

Depth Analysis of Fiber Optic Testers (Part 2)

Another two fiber optic testers are optical power meter and optical light source.

Optical Power Meter

Optical power meters are used to measure the absolute optical power or the relative length of optical fiber optical power loss. Measuring optical power is the most basic in the fiber-optic system. Very much like the electronics multimeter, in optical fiber measurement Optical Power Meter is a heavy-duty commonly used table, and it is suggested that each of the fiber optic technicians should staff one. Through the measurement of the absolute power of the transmitting end optical network, a power meter can be able to evaluate the performance of the light end equipment. With an optical power meter and stabilized optical light source used in combination, it is possible to measure the connection loss, test continuity and help evaluate the transmission quality of fiber link.

For any manufacturing of optical fiber transmission system, installation, operation and maintenance, optical power measurement is essential. In the field of optical fiber, if there are no optical power meters, any engineering, laboratory, manufacturing floor or telephone maintenance facilities are unable to work. For example, Optical Power Meter can be used for measuring the output power of the laser light source and the LED light source; used to confirm the estimate of the loss of the optical fiber link; most important of which is that it is a test optical components (fiber, connectors, connecting sub, attenuator key performance indicators, etc.) instrument.

Specific applications for users to select the appropriate optical power meter, should pay attention to the following points:
1). Select the optimal probe type and interface type.
2). The evaluation calibration accuracy and manufacturing calibration procedures, and the required range of optical fiber and connector match.
3). Determine if the model is consistent with the measurement range and display resolution.
4). With the direct dB insertion loss measurement function.

Optical Light Source

Optical light source are used transmitting the light with known power and wavelength to optical system. As mentioned, a stabilized light source together with an optical power meter, can measure the optical loss of the optical fiber system. In off-the-shelf optical fiber system, usually the transmitting end of the system machine plays a role as a stable light source. If the end of the machine does not work or does not end machine, you need to separate stable light source. The stability of the wavelength of the light source should be as consistent as possible with the wavelength of the system end machine. After installation of the system, often need to measure the end-to-end loss, in order to determine whether the connection loss to meet the design requirements, such as: measuring connectors, splices point loss, and optical fiber body loss.

Optical light source transmit the light wtih known power and wavelength to enter the optical system in the process of measuring loss. Optical power meter which is used calibrating a specific wavelength light source, will receive light from the optical fiber network and convert it into electrical signals. To ensure the accuracy of loss measurement, the transmission equipment taht used in the fiber optic light source simulation should have these features.
1). The same wavelength, and uses the same type of light (LED, laser).
2). During the measurement, ensure the stability of the output power and spectral (time and temperature stability).
3). To provide the same connection interface, and use the same type of fiber.
4). The size of the output power should meet the worst-case system loss measurements.

When the transmission systems require a separate stable light source, the optimal choice of light source should simulate the characteristics of the system Optical and measurement needs. When you select light source, it should be considered to the following aspects: a laser tube (LD) from the the LD light emitted from a narrow wavelength bandwidth, almost monochromatic, i.e. a single wavelength. Compared with the LED, through its spectral band (less than 5nm) the laser is not continuous, and on both sides of the center wavelength, but also the emission the several lower peak explants wavelength. Compared to the LED light source, laser source provides more power, but its price is higher than the LED. Laser tube is commonly used in the loss of more than 10dB of long-haul single-mode system. You should avoid measuring multimode fiber with laser light source.

Article source: FiberStore.com

Depth analysis of fiber optic testers

There are two commonly used fiber optic testers. They are optical time domain reflectometer (OTDR) and visual fault locator.

OTDR is the most classic fiber tester, and can provide the most information on testing optical fiber. The OTDR itself is a one-dimensional closed-loop optical radar, measuring the distance from one end of an optical fiber head. Emitting the high intensity, narrow optical pulses into the optical fiber, while the optical probe at high speed record return signal. This instrument gives a visual interpretation of the optical link. OTDR curve reflects the continuation point, the size of the connector and the location of the point of failure, and loss.

OTDR evaluation process has many similarities with optical multimeter. In fact, OTDR can be considered as a very professional test instrument combination: a stable high-speed pulse source and a high-speed optical probe. The selection process of OTDR can be focus on the following attributes.

1). Confirming the operating wavelength, fiber type and connector interface.

2). The expected loss of the connection and the need to scan the range.

3). The spatial resolution.

Most of the visual fault locator is a handheld instrument suitable for multimode and single-mode fiber-optic system. The use of OTDR technology for fiber fault point location, most of the test distance in less than 20 km. Instrument directly to the digital display the distance to the point of failure. : Wide Area Network (WAN), the 20-km range communication systems, fiber-to-roadside (FTTC), single-mode and multi-mode fiber optic cable installation and maintenance, and military systems. Single-mode and multi-mode fiber optic cable system, it is necessary to locate the connector failure, bad splices, visual fault locator is an excellent tool. The visual fault locator simple just a one-button operation, multiple events can be detected up to seven.

Visual fault locator: the performance for fiber loss function of the distance. With OTDR, technicians can see the outline of the entire system, to identify and measure the span of fiber splice points and connected head. Diagnosis meter fiber failure, OTDR is the most classic but also the most expensive instrument. With the ends of the optical power meter and optical multimeter test, OTDR only through the end of the fiber can be measured fiber loss. The position and size of the the OTDR trace line gives the attenuation value of the system, such as: any connectors, splices, optical fiber shaped, or the position of the fiber break its loss size.

OTDR can be used in the following three aspects:

1). In the understanding of the characteristics of the cable (length and attenuation), before being laid.

2). To obtain the signal trajectory line waveform of the period of the optical fiber.

3). Positioning serious point of failure when problem increased and connected worsening .

Visual fault locator is a special version of OTDR. It can automatically find fiber failures without the OTDR complex steps, and its price is also just fraction of OTDR.

Article source: FIberStore.com

Buy Handheld Test Equipment From FiberStore

A handheld equipment is most often used in testing electronics, power, pressure measurement, and so on. For example, a handheld optical visual fault locator is such a handheld test equipment used in fiber optic network.

Visual Fault Locator, as the name has already expressed its function, could be regarded as a part of OTDR. It is a kind of device to locate the breakpoint, bending or cracking of the fiber glass. It can locate the fault of OTDR dead zone and make fiber identification from one end to the other end. Designed with a FC,SC,ST universal adapter, fiber fault locator is used without any other type of additional adapters, and can locates fault up to 10km in fiber cable, with compact in size, light in weight, red laser output. Some users liked the convenience of this measurement method, it is sure that the later volume will increase.

Here is a handheld type visual fault locator. Its Model is BML201. The BML201 visual fault locator is a kind of fiber tester which specially designed for field personnel who need an efficient and economical tool for fiber tracing, fiber routing and continuity checking in an optical network during and after installation. It includes: finding the breakpoint, poor connections, bending or cracking in fiber optic cables, and finding the faults of OTDR. It is an essential tool for troubleshooting a fiber optic system. Visual Fault Locators from FiberStore are all with high quality and good price.

As telephone test equipment is used in teleommunication works, another handheld test equipment – telephone line tester, is used in testing the phone line. Telephone line tester is a new kind of line fault tester with safety and multi-functions capabilities. Besides the functions as a common telephone line tester, it also has the functions of high voltage protection and dangerous voltage warning. A phone line tester is used for detecting either digital or analog phone systems as well as the line polarity. Telephone line testers are good for both personal and professional use. FiberStore supplies some mini phone line tester other telephone line testers with low prices.

What is the most important requirement for a handheld test and measurement equipment? Accuracy? Stability? Price? According the survey, 89% of respondents believe that the accuracy and reliability is very important, 11% of respondents believe that accuracy and reliability are important. Second is the easy-to-read, 54% of respondents think it is very important, 45% of respondents think it is important. Ease-of-use, followed by 63% of respondents think its very important, 35% of the respondents believe that it is important. As respondents said: simple operation and use is important, the legibility and clearly show the same important. Other respondents said: ensure that the equipment is very easy to use, otherwise, no matter how good the equipment, technology personnel will not use him, even use, is also likely to incorrectly use.

And the above two features, durability is important for 99% of the respondents, 73% of respondents think its very important, 26% of respondents think its important. Respondents said: To take into account the human factor, instrument in the misuse is damaged? The other respondents added: To ensure that the equipment will not be damaged in transit.

Welcome to FiberStore and choose the best Handheld Test Equipment here.

Article Source: FiberStore.com

Cable Testers used in Network

What is a Cable Tester? A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly. Sometimes we also call it Network Cable Tester, because it is usually used in LAN Network.

There are many different types of cable testers, each able to test a specific type of cable or wire (some may be able to test several different types of cables or wires). The cable tester can test whether a cable or wire is set up properly, connected to the appropriate source points, and if the communication strength between the source and destination is strong enough to serve its intended purpose. Here is an example of a cable tester made in FiberStore.

Its model is PN-8108, a Multifunction Network Cable Tester. This tester is very easy to operate for prevent and solve cable installation problem. It can widely be used for a number of applications such as cable connection sequence, length, user jumper and cable connection continuity and determine any open circuit, short circuit, jumper or cross-talk interference.

For computers, one of the most common types of cable testers used is for testing Cat5, Cat5e, and Cat6 network cables. Because so many different types of data can be transmitted over a network cable, it is important that the network cable connects properly between the computer and server. It is also important to ensure the signal strength between computers and servers is adequate for transmitting data and that there is no interference from outside sources that could cause a loss of data or decrease in signal strength. A cable tester can test for these factors and help to ensure the network cables connections are correct and will work for the intended purpose.

FiberStore supplies many kinds of LAN Network Cable Testers, which are a kind of convenient and comprehensive tools for network professionals. Network Cable Tester is always being used to test LAN Datacom and Telecom cables. Network Cable Line Tester can find all problems associated with testing such faults as opens, shorts, cable integrity and it also find cable length of individual cables or distance to a fault, and its powerful and user-friendly features enable network installers to accurately check pin configurations of various voice and data communication cables.

Except Network Cable Testers, FiberStore also offers many kinds of fiber optic tester. There are OTDR Testers, ADSL Testers, CCTV Security Testers, and Telephone Line Testers here.

Telephone Line Tester is a new kind of line fault tester with safety and multi-functions capabilities. Besides the functions as a common Telephone Line Tester, it also has the functions of high voltage protection and dangerous voltage warning. Such a phone line tester is used for detecting either digital or analog phone systems as well as the line polarity. Telephone line testers are good for both personal and professional use. FiberStore supplies some mini phone line testers and other general telephone line testers. The importance that you should know is they are the cheapest and best performance products in fiber optic network.

Article Source: FiberStore.com