Fibre optic communication subsystem basic test procedures - Part 2-4: Test procedures for digital systems - Bit-rate tolerance measurement IEC 61280-2-4 /  
 IEC 61280-2-4 
ISO, IEC. 
 - First edition. 
 - Geneva :   ISO :   IEC,   1998. 
 - 17 stron ;   30 cm.