fiber testing and maintenance|100 final exam Questions And Answers

A fiber-optic network maintenance plan should be developed with which of the following in mind? - ️️The task of compiling the physical document must become the responsibility of an identifiable position or organization. A light source - ️️Is crucial for accurately measuring optical fiber power and attenuation. A wavelength-isolating power meter is most commonly used in - ️️Point-to-multipoint FTTx installations. Additional optical attenuation - ️️Can be obtained by use of an in-line optical attenuator. Some manufacturers provide a front panel interface allowing the user to add or remove optical attenuation. An optical power measurement - ️️Of the input on most optical receivers used in the broadband cable industry is accomplished by including a DC voltage test point. As changes are introduced to a fiber-optic network, - ️️Documentation must be updated to reflect the new configuration and performance data. As you begin to identify trouble within fiber-optic systems, it's important to consider which of the following? - ️️No matter how complex, all systems are composed of point-to-point links consisting of a source (transmitter) and a detector (receiver) connected by an optical fiber. Besides RS-232 ports, what type of interface is common on an optical power meter? - ️️A USB interface can provide easy download of information to a PC. Choosing the appropriate optical measurement for post-installation fiber-optic span tests - ️️Includes splice loss, attenuation measurements of fiber segments, component reflectance, optical splitters, accumulated loss, dual wavelength testing, bi-directional testing, and pass/fail analysis. Dense wavelength division multiplexing (DWDM) systems - ️️In a fiber network create the need for an additional piece of test equipment, the optical spectrum analyzer. Digital channel signal testing - ️️Should be performed in both the downstream and upstream paths and should include bit error rate and modulation error rate performance measurements. During installation of fiber-optic cable, what does damage to the cable jacket cause? - ️️Moisture migration into the cable. FCC proof-of-performance - ️️Tests cover all the indicators that will help identify every factor that could eventually cause network failure.