What are internal controls and why are they important? Internal controls are the procedures put in place to help achieve the objectives of the university relating to financial, strategic, and academic initiatives. Good controls encourage efficiency, compliance with laws, regulations and university policies, and seek to eliminate fraud and abuse. Some everyday internal control procedures include:
Standard Fiber Optic Cable. Sealed with a Teflon jacket over a stainless steel sheath, Williamson's standard fiber optic cables are available in lengths of 3 - 30 feet (1-9 meters). Cable diameter is .25 in. (6.5mm) with a lens assembly that is 3.05 in. long x 0.5 diameter (77mm x 14mm). They are suitable for most general purpose applications.
With these results, you can conclude that the maximum attenuation for optical cable (TA) must be maximum 26dB for one link with OC48 LR 1550, and cannot be less than 11 dB. This takes these conditions into account: The minimum length for the optical fiber on a cable is: L(min) = A(min) / a= 6.5dB/ 0.22dB/km = 29.5km