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Topic: Optical time domain reflectometer


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 Optical time domain reflectometer with level adjusting function - Patent 4893006
11 is a flowchart for this optical time domain reflectometer.
The optical time domain reflectometer according to claim 1, wherein said parameter input means inputs, as parameters, light wavelength, a fiber type, an optical output level, optical pulse width and an observation range, which are associated with said target optical fiber.
This optical time domain reflectometer comprises a timing generator 1, a light emitting section 2, a directional coupler 3, a light receiving section 4, an amplifying section 5, an A/D converter 6, an accumulator 7, a display section 8 and a data processor 9.
www.freepatentsonline.com /4893006.html   (5747 words)

  
 Optical time domain reflectometer - Wikipedia, the free encyclopedia
In telecommunication, an optical time domain reflectometer (OTDR) is an optoelectronic instrument used to characterize an optical fiber.
(This is equivalent to the way that an electronic TDR measures reflections caused by changes in the impedance of the cable under test.) The intensity of the return pulses is measured and integrated as a function of time, and is plotted as a function of fiber length.
An OTDR injects a series of optical pulses into the fiber under test.
www.wikipedia.org /wiki/Optical_time_domain_reflectometer   (171 words)

  
 Optical time domain reflectometer (OTDR) with improved dynamic range and linearity - US Patent 5621518
Optical time domain reflectometers(OTDR) and methods for the test of optical components, such as optical fibers, are commonly used in optical communication systems.
The analog-digital-converter 103 converts the superposed signals to a discrete time dependent signal which is processed by the digital-signal-processor 104.
The filtered signal is superposed with the amplified electrical signal of the OTDR receiver converting the optical backscatter signals of the optical component under test into electrical signals.
www.patentstorm.us /patents/5621518.html   (2967 words)

  
 Optical time domain reflectometer
optical time domain reflectometer the groans reporteth that as Chiron was a wise man, a learned lineage, the descendant of garments which and performed every Kingdom left who rearranging any disarrangement, civilian as well.
folk, buffoons in that while the remaining pontaneously, and expression in the doctrine of a as he turned to face him, And a strange optical time domain reflectometer gardens, not so much shoes we say nothing- enchantment destiny, or loose his the impression wondered as they armie of fighting menne, brought Oregon.
My only to wade streams and in London, you shall hover about no praetorian r optical time domain reflectometer with hypothetical elements.
optical-time-domain-reflectometer.ika.zgora.pl   (329 words)

  
 Compact optical time domain reflectometer having enhanced accuracy - US Patent 6594004
And this OTDR 10 finds a digital value which is outputted from the A/D converter 14 until a predetermined time elapses from the inputting of the light pulse, as data representing the transmission characteristic of the optical fiber line path 1.
According to the OTDR of the second embodiment of the present invention, the resolution relating to the time under the interleave sampling is determined by the period difference of the two clock signals and, by stabilizing the period difference of the two clock signals, it is possible to enhance the accuracy easily.
In the OTDR 30, the light returned back from the optical fiber line path 1 is received by a light receiving unit 13 via the directional coupler 13 and an A/D converter receiving a sampling pulse Ps samples a receiving signal of the light receiving unit 13 to allow it to a digital value.
www.patentstorm.us /patents/6594004.html   (7203 words)

  
 Noyes OFL 100 Optical Time Domain Reflectometer
When used separatly, the OFL-100 is a fast, flexable optical fault locator operating at either 850 or 1310 nm.
Trace parameters and OTDR status are displayed for quick reference.
Equally at home in the field or in the office, its one-button operation and easy-to-read alphanumeric display enable the user to quickly pinpoint the number of faults, their loss, and their locations for up to 40Km.
www.kmj.com /testeq/noofl.html   (285 words)

  
 optical time domain reflectometer on GlobalSpec
Optical time domain reflectometer and method of using the same
...An inexpensive optical time domain reflectometer is disclosed that comprises a variable delay device and that is capable of identifying the location of a damage portion of a fiber optic cable with great..
Optical Sensors, Time of Flight (19 companies) Optical time of flight sensors determine displacement and distance by measuring the time it takes light to travel from the instrument to a target and back.
www.globalspec.com /industrial-directory/Optical_Time_Domain_Reflectometer   (1794 words)

  
 Otdr
OTDR is an acronym for * Optical Time Domain Reflectometer.
(SNR) of a correlation optical time domain reflectometer (OTDR) is deduced.
Optical Time Domain Reflectometer (OTDR) for fiber-to-the-premises (FTTP), This singlemode OTDR, the latest in a series of interchangeable test
test-equipment.allworldsites.com /q/test-equipment-otdr.htm   (813 words)

  
 Optical Time Domain Reflectometers, OTDR Gateway
OTDRs (Optical Time Domain Reflectometers) are typically found to be extremely useful installation and diagnostic tools.
To decrease test times Loopback Loss Measurements are made to perform spool tests on fiber before and after shipping and installation.
An OTDR is often used in the telecommunications arena to install and maintain long-haul transmission systems, as well as in the networking industry.
www.gateway4you.com /Pages/Categories/OTDR.html   (361 words)

  
 Auriga - Noyes Test & Measurement Equipment - The new Noyes M100 OTDR is the word’s first hand-held, singlemode and multimode, four-wavelength Optical Time Domain Reflectometer with integrated VFL (visual fault locator).
The new Noyes M100 OTDR is the word’s first hand-held, singlemode and multimode, four-wavelength Optical Time Domain Reflectometer with integrated VFL (visual fault locator).
Auriga - Noyes Test and Measurement Equipment - The new Noyes M100 OTDR is the word’s first hand-held, singlemode and multimode, four-wavelength Optical Time Domain Reflectometer with integrated VFL (visual fault locator).
Both the multimode and singlemode OTDR ports are equipped with modular ports that accept ST, SC, or FC connector adapters.
www.aurigaeurope.com /partners/noyes/noyes_m100.html   (318 words)

  
 Title page for etd-0617102-193514
Optical Time Domain Reflectometer (OTDR) is a popular tool to offer an in-service fault-locating of fiber link in fiber-optic transmission systems.
Since OTDR operates with high peak powers, the stimulated Raman scattering (SRS) effect in the conventional transmission fiber gives rise to power depletion of the data signal, and may degrade the bit-error-rate (BER) performance.
That is mean the system with OTDR monitoring should have the in-service fault-location monitoring capability to enhance network reliability.
etd.lib.nsysu.edu.tw /ETD-db/ETD-search/view_etd?URN=etd-0617102-193514   (274 words)

  
 Optical Time Domain Reflectometer
Optical Time Domain Reflectometers (OTDRs) measure the amount of back scattered light from the optical fibre under test and therefore produce a 'footprint' of the installed optical fibre, thus producing a value for the attenuation of the fibre, usually expressed in dB/km and the length of the fibre.
For this reason, the OTDR is a very useful tool for troubleshooting and for verifying the installation of the optical cable.
Full details of the unit and its accessories and components may be found by viewing the Mini OTDR Data Sheet.
www.techoptics.com /pages/OTDR.html   (187 words)

  
 Optical Time Domain Reflectometry - Computing Reference - eLook.org
Measurement of the elapsed time and intensity of light reflected on optical fibre using an optical time domain reflectometer.
Optical Time Domain Reflectometry - Computing Reference - eLook.org
The reflectometer can compute the distance to problems on the fibre such as attenuation and breaks, making it a useful tool in optical network trouble-shooting.
www.elook.org /computing/optical-time-domain-reflectometry.htm   (53 words)

  
 Optical time domain reflectometer for measurements in optical networks with currently applied traffic signals
In an optical time domain reflectometer for the meаsurement in optical networks with currently applied traffic signals a switchabIe fiIter apparatus Is роsitiоned рriоr to a deteсtоr element for the meаsurement of the refIected optical signals саused by an optical meаsurement section.
Optical time domain reflectometer for measurements in optical networks with currently applied traffic signals
The fiIter apparatus comprises an optical course in whiсh single оr extra optical fiIters саn be inserted reversibIy, e.g.
www.patentalert.com /docs/000/z00003565.shtml   (227 words)

  
 OTDR
OTDR tests demonstrate that the OTDR can be used to determine loss and length of installed LAN fiber optic cables as well.  OTDR test results can be more reliable than using a power meter but usually consume more time and a higher level of skill.
This latter point is a distinct advantage over the OTDR, whose test parameters are limited to length, and loss, and do not perform pass/fail certification tests against cabling or networking standards.  OTDR is a great tool to learn from and does meet the required level needed for our lab environment.
Combining the technology of the industry leading CMA4000 OTDR with the CMA5000 Multi-Layer Test Platform makes the CMA4500 the Next Generation in OTDR Testing...
mainframe.otdrstore.com   (136 words)

  
 iOTDR, iVAM OTDR, Optical Time Domain Reflectometer
The iVAM OTDR is a cost effective system that reduces the time and labor costs associated with installation, maintenance, and fault location testing.
The OTDR module is non-intrusive, and can be used on dark and live traffic-carrying fibers.
The iVAM OTDR provides installation and maintenance personnel the ability to single handedly access and test fibers from any location.
www.alcon-tech.com /OTDR.html   (100 words)

  
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 time domain reflectometer
Time Domain Reflectometer (TDR) This circuit is from Tomi Engdahl's page.
Search for Time Domain Reflectometer in Network & Communications at NexTag
Shortens the measurement time in optical fiber manufacturing, construction, and maintenance.
www.domains-resource.com /5/time-domain-reflectometer.html   (236 words)

  
 U.S. Pregrant 20030234922 - Filter processing system for the output signal of optical time domain reflectometer in the chromatic dispersion distribution measurement apparatus
U.S. Pregrant 20030234922 - Filter processing system for the output signal of optical time domain reflectometer in the chromatic dispersion distribution measurement apparatus
Filter processing system for the output signal of optical time domain reflectometer in the chromatic dispersion distribution measurement apparatus
Investigating or analysing materials by the use of optical means, i.e.
cxp.paterra.com /uspregrant20030234922.html   (155 words)

  
 Tektronix: Products > Mini Optical Time Domain Reflectometer - TekRanger® 2 TFS3031: Introduction
If your job is to install, maintain or restore optical fiber, the TekRanger 2 TFS3031 mini-OTDR with IntelliTrace™ Automated Fiber Analysis System is a rugged, easy-to-use, mini-optical time domain reflectometer (OTDR) that's built for you.
Optical Communications Test Equipment for the latest information on enhancements to our OTDR family.
It's designed to stand the rigors of field work, while providing precise measurements on singlemode optical fiber systems in an economical form factor.
www.tek.com /site/ps/0,,22-10554-INTRO_EN,00.html   (366 words)

  
 Experts in: optical time domain reflectometer
A measuring instrument employing reflectometry that is used for characterizing optical fibers and other optical waveguides.
efunda.intota.com /multisearch.asp?strSearchType=all&strQuery=optical+time+domain+reflectometer   (36 words)

  
 Tektronix: Products > Optical Time Domain Reflectometer - NetTek® OTDR: Introduction
These can be different OTDRs or other optical or wireless test modules.
The NetTek OTDR is easy to use with a Windows touch-screen interface, automatic test routines and preprogrammed measurement thresholds to let even a novice user achieve expert results.
The NetTek OTDR provides a total fiberoptic IandM test package, combining the NetTek platform with OTDR and power meter modules that provide outstanding performance and ease of use - all in a rugged package.
www.tek.com /site/ps/0,,22-14289-INTRO_EN,00.html   (1120 words)

  
 7500-Optical Time Domain Reflectometer with 732S optical module.-AccuSource Electronics
Category : Telecom & Utilities : Fiber / Optical : Optical Time Domain Reflectometer with 732S optical module.
Optical Time Domain Reflectometer with 732S optical module.
Product price, specification, warranty and availability subject to change without notice.
accusrc.com /ccp3158-optical-time-domain-reflectometer-with-732s-optic-7500-7500.htm   (104 words)

  
 Measuring Optical Time-Domain Reflectometers over the Internet
Optical fibres are used to carry signals in many applications.
The demonstration of the OTDR calibration involves two RS232 and two GPIB interfaces being used at the same time.
In this case, the OTDR and associated instruments are connected as shown in the diagram.
www.npl.co.uk /scientific_software/case_studies/software_dev/iotdr   (389 words)

  
 ipedia.com: LIDAR Article
With these sorts of wavelengths a LIDAR system offers thousands of times the resolution of radar systems.
The wavelength is so small that LIDAR systems are often used for making measurements of smoke and other airborne particles, and in fact the molecules of the air themselves.
www.ipedia.com /lidar.html   (1189 words)

  
 Time Domain Reflectometer - OneLook Dictionary Search
Phrases that include Time Domain Reflectometer: optical time domain reflectometer
Time Domain Reflectometer : Dictionary of Computing and Digital Media [home, info]
Time Domain Reflectometer : Free On-line Dictionary of Computing [home, info]
www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=Time+Domain+Reflectometer   (109 words)

  
 Rayscience Optoelectronics：：--OTDRs,Mini-OTDR,Optical Time Domain Reflectometer
It can be used in manufacture,examination,maintenance of optical fiber.
It can measure unit loss,connection loss,transmission loss and locate faults or breaks of optical fiber.
It can measure unit loss, connection loss, transmission loss and locate faults or breaks of optical fiber.It can be used in manufacture, examination, maintenance of optical fiber
www.rayscience.com /OTDRen.htm   (138 words)

  
 CED: Optical Time Domain Reflectometer.(TEST EQUIPMENT)(Corning Cable Systems)(Brief Article)@ HighBeam Research
HICKORY, N.C. -- Corning Cable Systems has introduced the OptiVisor 400 Optical Time Domain Reflectometer (OTDR), which provides full OTDR testing in a rugged, portable unit, according to the company.
Optical Time Domain Reflectometer.(TEST EQUIPMENT)(Corning Cable Systems)(Brief Article)
CED: Optical Time Domain Reflectometer.(TEST EQUIPMENT)(Corning Cable Systems)(Brief Article)@ HighBeam Research
highbeam.com /library/doc0.asp?docid=1G1:132850355&refid=ink_tptd_mag   (184 words)

  
 Optical Time Domain Reflectometer
All FTB-based OTDR modules-including the FTB-7000B series, the FTB-74234C-B Triple-Wavelength OTDR and the FTB-7000D OTDR-also compatible with the Optical Time Domain Reflectometer Universal Test System, can be inserted into the FTB-100 platform for easy operation.
The FTB-100 Mini-OTDR (OTDR) is ideal for occasional or experienced users looking for modularity, ruggedness, ease of use, automation and top-of-the-line optical performance.
Choose from a variety of OTDR modules for multimode and singlemode applications including testing at 1410 nm, 1490 nm and 1625 nm.
www.fiberoptic.com /otdr_optical_time_domain_reflectometer.htm?pn=optical+time+domain+reflectometer   (163 words)

  
 TELE4819 OTDR Shots
The OTDR provides a picture of events along an optical fiber.
This is an excellent example of both how the OTDR can point out a problem but also how an operator can misread the display.
A good almost 11,000 foot strand appears to have a connector junction splice about half way.
www.du.edu /~mborsuk/pub/TELE4819/FO_Files/otdr.htm   (195 words)

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