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

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 commontelephone 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