Up
|
The Fibersafe approach differs from the standard OTDR-based systems, because of: On in-service fibers, the monitoring function does not adopt any wavelength for maintenance purposes (OTDR usually adopts 1625 nm), using the traffic signal for the evaluation of the optical power transmitted. This is a futureproof approach, since transmission systems using from 1620 to 1625 nm for equipment monitoring already exist and in the near future these wavelengths will be occupied by inservice signals. In addition, with the increase in bit-rate, signals become less tolerant to non-linear phenomena which may be provoked by OTDR high-powered pulses. Fibersafe optical measuring probes has been jointly tested with ALCATEL to certify the nonintrusiveness on in-service fiber adopting the most advanced D-WDM equipment. Joint ALCATEL/PLLB tests also highlight measurement linearity and stability both at high and low optical power levels, together with the measurement accuracy (better than 0.05 dB over all the 60 dB measurement range) The time resolution of the power measurement (1 second) guarantees detection and location of phenomenon with an unknown dynamic range (rapid variations due to connector vibrations or trunks with decreased mechanical resistance, transient attenuation peaks due to thermo-mechanical effects, etc. ) which can, on one hand, highlight potentially dangerous situations and, on the other hand, remain hidden if the sampling period is not sufficiently short. · Real-time anomaly detection The continuous monitoring principle instantaneously detect all anomalies and eliminates the need to manage alarm relay contacts of the transmission equipment to start OTDR. Fibersafe automatically activates OTDR measurements when Fiber Monitoring highlights anomalies. The OTDR is not used by Fibersafe in a continuous manner for preventive maintenance, which can be best carried out by direct power measurements at the ends of the optical link. “On-demand” use guarantees a higher OTDR life and minimizes exposure of the fiber and the service signal at very high-power pulses. For fault/degradation location, a statistical coverage of the cable via few “sentinel” fibers, specifically chosen as a function of the cable’s dimensions, is thought to represent the majority of cases in the cost-performance trade-off. The basic configuration is a dark “sentinel” fiber which covers sudden faults (for e.g., a cut in the cable) statistically, with an average percentage of greater than 80. A configuration with a higher statistical coverage requires use of one dark “sentinel” fiber per bundle (tube or groove). This guarantees a higher probability of degradation cause location (around 90%) and an even higher probability for sudden faults. At the same time, system costs are limited, since there are no optical filter or WDM installation costs. Full Product Description >>PDF-File<< Offered system includes following boards: 1 x CNC-CO - Local control module 1 x OTDR-CO1 - Reflectometric Measurement Module. The OTDR is an 18 TE card which contains the Optical Module 735S from PK Technology Attenuation Dead Zone (m) <= 25.0 1 x OGEN 3W – 3.Optical Window (1550 nm) LASER transmitter 1 x OMEAS-4/P – Optical Measurement 4P type, module with 4 OMEAS-1 type devices, passing-through, for motoring of in service fibres 1 x CNC-PS - Power Supply Module 1 x MOD-4B – Four-Channel Bridged Measurement Module. It is made up of two parts: one four-channel optical PCS, within which the couplers for in-service signal spilling are managed, and four independent opto-electronic sections (Mode1-FC), mounted on the optical PCS, on which the PINs and measuremen circuits are present. 1 x CNC-R – Peripheral Controller, one built in RJ-45 connector for Ethernet, one built-in FSK modem port (CHC). Devices are in very good condition ( some cosmetic scratches on exterior case), tested and 100% functional. Devices will be provide as shown on the pictures below plus manual and software (on server). For any information, please contact us or send us an email. We speaks ENGLISH, GERMAN and RUSSIAN. Address: IOIC.LTD, 181 Queen Victoria Street, London EC4V 4DC, UK - HOW TO PAY - |