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Discussion of precise time and frequency measurement

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TICC plots

MS
Mark Sims
Sun, Feb 19, 2017 2:20 AM

Here's an hour of Thunderbolt data...  with labels for the xDEVs.  On narrow screens only the  1-10-100-1000... divisions are labeled and not 1-2-5-10-20...  Otherwise the longer labels run together.

I also enabled the PPS plot which is basically the PPS jitter.

The Star-4 PPS seems to be around 3 times better than the Thunderbolt PPS (and that's with an indoor antenna on the Star-4).  It uses an LEA-5T + their highest spec 8663 DOCXO.  I need to get a TADD-Mini to measure the 10 MHz.

Here's an hour of Thunderbolt data... with labels for the xDEVs. On narrow screens only the 1-10-100-1000... divisions are labeled and not 1-2-5-10-20... Otherwise the longer labels run together. I also enabled the PPS plot which is basically the PPS jitter. The Star-4 PPS seems to be around 3 times better than the Thunderbolt PPS (and that's with an indoor antenna on the Star-4). It uses an LEA-5T + their highest spec 8663 DOCXO. I need to get a TADD-Mini to measure the 10 MHz.