• CCITT Rec. O.151 (11/1988) – ERROR PERFORMANCE MEASURING EQUIPMENT FOR DIGITAL SYSTEMS AT THE PRIMARY BIT RATE AND ABOVE
  • 1 General
  • 2 Test patterns
    • 2.1 Pseudorandom pattern for systems using a 215 - 1 pattern length
    • 2.2 Pseudorandom pattern for systems using 223 - 1 pattern length
    • 2.3 Pseudorandom pattern for systems using 220 - 1 pattern length
    • 2.4 Fixed patterns (optional)
  • 3 Bit rate
  • 4 Interfaces
  • 5 Error-ratio measuring range
  • 6 Mode of operation
  • 7 Measurement of errored time intervals
  • 8 Operating environment
  • References