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Raspberry Pi XO Replacement

Notable Test Points

PP3 GND
PP4 GND
PP5 GND
PP6 GND
PP7 5V after polyfuse
PP8 3V3
PP9 1V8

Pi 3 B v1.2 Stock XO

New TCXO

Test Cases

Before I do this swap, I need to get a benchmark of (at least) two identical Pis so I have a baseline of their performance in stock configuration. These systems need to be as identical as possible, both in terms of software load out as well as their physical deployment.

Software

  • OS - Alpine Linux 3.17
  • Timekeeping/measurement - chrony

Configured to be as light and slim as possible.

Physical

Power

Meanwell 5v PSU powering both Pis. Either back-fed through the 5v pin on the 40pin header, or spliced miniUSB connectors/cables. Through the regulator.

pixo_replacement.1678469991.txt.gz ยท Last modified: 2024/11/14 02:30 (external edit)

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