1588v2/PTP Wander Measurements

The wander measurements in the IEEE 1588v2/PTP section are specific to 1588v2 Slave modes. Make sure that a PTP sync has been established to the selected GM and enough "warm up" time has been given to the protocol to provide an accurate and stable recovered clock (test signal).

Wander measurements is used in the context of PTP packet time performance, to track and evaluate short-term and long-term stability (wander) and accuracy. The Time Error (TE) measurements are based on the raw 1PPS clock recovered from the PTP session, without being filtered or stabilized by a precision oscillator.

For telecom Time Error verification applications, it is recommended to use the Slave mode with G.8275.1 or G.8275.2 profiles and 1PPS reference clock from an accurate and stable external clock source (PRTC) or use the internal GNSS-disciplined Atomic 1PPS (GNSS 1PPS could also be used for long-term stability and accuracy, if nothing else is available, but this will introduce small amounts of short-term phase noise).

After configuring, starting the PTP Slave emulation and getting proper sync to the remote Grandmaster, go to >Advanced Tools >Wander Measurement feature.