VR2R-0322
① SA Source
- Source: 開啟完整 SA 文章
- Section:
PCB vs Flyover Cables - Line hint:
286
Context Before
In conclusion, insertion loss scales with signal frequency, and high-speed signal suffers more insertion loss from PCB than from fly over cables. Hence, as traditional CPU servers upgrade to higher signaling frequencies such as upgrading to newer PCIe generations, the CPU server design increases the adoption of fly over cables to compensate for insertion loss from the PCB.
Evidence
The alternative solution would be upgrading PCB materials, however, fly over cables are more cost effective
Context After
and remain feasible for traditional server applications.
② Atomic Claim
另一種方案是升級 PCB materials；不過 flyover cables 的成本效益更高……
- Epistemic Mode:
ASSERTED - Mapping Status:
PARTIAL
③ Semantic Frame
{
"attribute": "MATERIAL_UPGRADE_VS_FLYOVER_CABLE_ECONOMICS",
"context_nodes": [],
"entity": {
"id": "04_knowledge_base/PCB",
"label": "PCB"
},
"frame_type": "ATTRIBUTE",
"qualifiers": {
"condition_text": "sentence continues in VR2R-0323; flyover cable is plain text",
"numeric_mentions": [],
"temporal_mentions": []
},
"value": {
"numeric_mentions": [],
"value_text": "PCB material upgrades are an alternative, but flyover cables are more cost effective…"
}
}④ Canonical Entity Mapping
| Role | Surface Label | Canonical Target |
|---|---|---|
| entity | PCB | PCB |
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。