August 2010 IEC 60728-13(First edition 2010)Cable networks for television signals,sound signals and interactive services Part 13:Optical systems for broadcast signal transmissions C O R R I G E N D U M 1 C.1 System degradation factiors Replace Equation C.1 by the following:2f2f21ref4/exp2)(fRRfRIN=(C.1)where R1,R2 is the reflective index for first and second time,is the optical loss between two reflection points,f is the optical frequency shift of LD,f is the RF carrier frequency.
