Recommendation ITU-T G.8272.1 (01/2024) Timing characteristics of enhanced primary reference time clocks
Summary
History
FOREWORD
Table of Contents
1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 Time error, wander and jitter in locked mode
     6.1 Time error in locked mode
     6.2 Wander in locked mode
     6.3 Jitter
          6.3.1 Output port jitter
          6.3.2 Input port jitter tolerance
7 Phase discontinuity
8 Transient response and holdover performance
     8.1 Transient between time locked and frequency reference locked
     8.2 Phase/time holdover based on frequency reference during loss of phase/time input
          8.2.1 Time error in holdover mode
          8.2.1 Wander in holdover mode
9 Interfaces
     9.1 Phase and time interfaces
     9.2 Frequency interfaces
          9.2.1 Inputs
          9.2.2 Outputs
Appendix I  ePRTC functional model
Appendix II  ePRTC holdover model
     II.1 General clock model
     II.2 Ideal holdover model
     II.3 ePRTC holdover performance characterization
Appendix III  Testing ePRTC holdover
Appendix IV  ePRTC locked mode duration and holdover period
Appendix V  ePRTC parametric holdover
Bibliography