VR2R-0401_r1

VR2R-0401

① SA Source

• Source: 開啟完整 SA 文章
• Section: Compute Tray: Power Delivery
• Line hint: 334

Context Before

The internal busbar cables will feed 50VDC power to a busbar device that travels under the PCB midplane to connect to the power distribution board (PDB) on the other side of the PCB midplane. This differs from Grace Blackwell, where 50VDC power goes directly to the PDB.

Evidence

Then, the PDB feeds 12VDC to all the boards in the compute tray.

Context After

50VDC enters the Strata Board via one of the 50V power connectors on both sides of the Strata board. 50VDC is stepped down to 12VDC by the IBC module at the bottom of the Strata Board. Then the 12VDC will be stepped down to 1VDC by the VRM before feeding into the Rubin GPU and Vera CPU. Strata directly receives 50VDC whereas the Bianca board of Grace Blackwell receives 12VDC from the PDB.

② Atomic Claim

接著 PDB 向 compute tray 中所有 boards 提供 12VDC。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "attribute": "PDB_BOARD_POWER_DISTRIBUTION",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/Compute Tray",
    "label": "compute tray"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": "PDB is plain text in source claim",
    "numeric_mentions": [
      "12VDC"
    ],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [
      "12VDC"
    ],
    "value_text": "PDB feeds 12VDC to all boards in the compute tray."
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	compute tray	04_knowledge_base/Compute Tray

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。