All,
We’ve talked at various times about wanting to be able to measure the synchronization accuracy of RoE equipment. The 1PPS output signal is commonly used in telecom and test equipment; even some standard Ethernet switches with 1588 support have 1PPS outputs.
I think it would be good for the RoE spec to either encourage or require RoE equipment to provide the 1PPS output. Here is some proposed text to consider:
RoE equipment should/shall provide a 1PPS output as described in clause A.1.3 and clause A.2 of ITU-T G.8271/Y.1366.
Clause A.1.3 talks about the timing of the 1PPS coinciding with the transition to a new second, and clause A.2 describes the 50-ohm 1PPS signal.
Feedback?
--kb
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Kevin Bross Modular Systems Architect
2111 NE 25th Ave, M/S: JF3-466 Phone: 503-696-1411
Hillsboro, OR 97124 mailto:kevin.bross@xxxxxxxxx
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