BOUNDARY CLOCKS


Testing a T-BC to ITU-T G.8273.2

The accuracy of Telecom Boundary Clocks (T-BCs) is essential to the successful roll-out of LTE-A and TDD-LTE. This application note describes what a boundary clock is, and explains the critical performance parameters defined in G.8273.2.

Measuring Time Error Transfer of G.8273.2 T-BC's

This application note describes in more detail the methods for measuring time error transfer of a T-BC, following the recommendations of G.8273.2 Appendix VI. The companion application note is 'Testing a T-BC to ITU-T G.8273.2' (above).

T-BC G.8273.2 Conformance Test Plan

A ready-made test plan for Telecom Boundary Clocks to ITU-T G.8273.2 standard. This paper details the tests available to comply with G.8273.2. Calnex makes recommendations on what tests may be appropriate.

G.8262 Conformance Test Plan

A test plan for SyncE jitter and wander peformance to G.8261 and G.8262. This paper details the test procedures specified in the ITU-T G.8261 and G.8262 standards for Sync-E Jitter and Wander performance.

T-TSC G.8273.2 Conformance Test Plan

The accuracy of Telecom Time Slave Clocks (T-TSCs) is essential to the successful roll-out of LTE-A and TDD-LTE. To meet the new G.8273.2 compliance limits, T-TSCs must meet a very stringent constant Time-Error (cTE) limit of 20 or 50 nanoseconds.

G.813 Wander Test Plan

This test plan details the test procedures specified in the ITU-T G.813 standard for wander performance of SDH equipment slave clocks (SECs). The test plan also explains how to use the Paragon-t to provide compliance to G.813.

PTP Time Error for T-BCs

This Test Guide shows how the Calnex Paragon-100G can be used to test T-BC compliance as per G.8273.2 and provides procedures to measure noise generation, tolerance & transfer in addition to packet layer transient response and holdove performance.

Time Error for Boundary Clocks

Technical brief acting as a primer for the G.8273.2 test plan Topics included: Introduction to Clocks, Packet-based Clocks Packet-based Clocks Packet-based Clocks, Boundary Clocks for Full Timing Support, Further reading.