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  "docId": "SMPTE.RP6.1994",
  "document": {
    "abstract": "(1.1) This practice specifies parameters of the recorded information essential to the interchange of 2-in quadruplex video magnetic tape recording of monochrome and NTSC color signals for 525-line/60-field television systems. The parameters include video preemphasis characteristics and recorded carrier frequencies for all recording practices and video pilot specifications for practice SHBP. (1.2) Practices defined are: (1.2.1) Practice SHBP: This practice is suitable for color and monochrome signals. A video pilot signal is added to the recorded information to be used as a playback reference. (1.2.2) Practice HB: This practice is suitable for color and monochrome signals. (1.2.3) Practice LBM: This practice is suitable only for monochrome signals. (It is considered to be obsolescent and is included for reference purposes only.) (1.2.4) Practice LBC: This practice is suitable for color and monochrome signals. (It is considered to be obsolescent and is included for reference purposes only.)",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "approvalDate": "1994-02-28",
    "approvalDate$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json); Zoho is canonical for SMPTE standards metadata, registry value overwritten",
      "originalValue": "1994",
      "overridden": true,
      "source": "parsed",
      "updated": "2026-06-15T20:27:42.872Z",
      "version": "smpte-zoho-standards@v1"
    },
    "copyright": {
      "holder": "SMPTE",
      "holder$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.653Z"
      },
      "year": "1994",
      "year$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.653Z"
      }
    },
    "copyright$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "docId": "SMPTE.RP6.1994",
    "docId$meta": {
      "confidence": "high",
      "note": "Calculated from parsed/inferred metadata",
      "originalValue": null,
      "source": "manual",
      "sourceUrl": "https://pub.smpte.org/doc/rp6/19940228-pub/",
      "updated": "2025-10-30T00:00:00Z"
    },
    "docLabel": "SMPTE RP 6:1994",
    "docLabel$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docNumber": "6",
    "docNumber$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docTitle": "Recorded Carrier Frequencies and Preemphasis Characteristics for 2-in Quadruplex Video Magnetic Tape Recording for 525-Line/60-Field Television Systems",
    "docTitle$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "docType": "Recommended Practice",
    "docType$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "doi": "10.5594/SMPTE.RP6.1994",
    "doi$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "group": "smpte-24tb-tc",
    "group$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "href": "https://doi.org/10.5594/SMPTE.RP6.1994",
    "href$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "icsCodes": [
      {
        "code": "33.160.01",
        "description": "Audio, video and audiovisual systems in general"
      },
      {
        "code": "33.170",
        "description": "Television and radio broadcasting"
      }
    ],
    "icsCodes$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "isbn": "978-1-61482-063-5",
    "isbn$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "keywords": [
      "Recording",
      "Communication",
      "Networking and Broadcast Technologies",
      "Television",
      "Quad"
    ],
    "keywords$meta": {
      "confidence": "medium",
      "note": "Union of curated keywords + source XML keywords (re-normalized via splitAndNormalizeKeywords)",
      "source": "manual",
      "updated": "2026-05-13T21:38:55.397Z"
    },
    "numberOfPages": "3",
    "numberOfPages$meta": {
      "confidence": "high",
      "note": "Cross-filled from Zoho standards export (_source/SMPTE/Zoho/SMPTE Standards Document Zoho Export 2026-05-21.json)",
      "source": "parsed",
      "updated": "2026-06-15T20:12:21.844Z",
      "version": "smpte-zoho-standards@v1"
    },
    "pages": "1–3",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "productNumber": "SSD001064",
    "productNumber$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "publicationDate": "1994-02-28",
    "publicationDate$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisher": "SMPTE",
    "publisher$meta": {
      "confidence": "medium",
      "source": "manual",
      "updated": "2025-07-01T00:00:00Z"
    },
    "publisherLocation": {
      "city": "White Plains, NY",
      "city$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.653Z"
      },
      "country": "USA",
      "country$meta": {
        "confidence": "high",
        "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
        "source": "parsed",
        "updated": "2026-05-12T21:55:08.653Z"
      }
    },
    "publisherLocation$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "releaseTag": "19940228-pub",
    "releaseTag$meta": {
      "confidence": "high",
      "note": "Release tag parsed from URL folder structure",
      "originalValue": null,
      "source": "parsed",
      "updated": "2025-10-08T05:50:15.827Z"
    },
    "resolvedHref": "https://pub.smpte.org/doc/rp6/19940228-pub/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": "https://my.smpte.org/s/product-details?id=a1BVR0000008kZC",
      "overridden": true,
      "source": "resolved",
      "updated": "2025-10-30T22:48:59.967Z",
      "version": "extractDocs.js@commit:ee2844fb1cf2"
    },
    "standardId": "20069",
    "standardId$meta": {
      "confidence": "high",
      "note": "Parsed from sibling XML (_source/SMPTE/APTARA/DL Project Files/07092015 REVISED STANDARDS BACKFILE/smptes_rp-6-1994_1/smptes_rp-6-1994_1.xml)",
      "source": "parsed",
      "updated": "2026-05-12T21:55:08.653Z"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "amended": false,
      "amended$meta": {
        "confidence": "high",
        "note": "Parsed from wrapper #amendments",
        "originalValue": null,
        "source": "parsed",
        "updated": "2025-10-08T05:50:15.827Z"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-08T05:50:15.827Z"
      },
      "reaffirmed": true,
      "reaffirmed$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "stabilized": true,
      "stabilized$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "stabilizedDate": "2004-10-08",
      "stabilizedDate$meta": {
        "confidence": "medium",
        "source": "manual",
        "updated": "2025-07-01T00:00:00Z"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Calculated from the releaseTag(s)",
        "originalValue": null,
        "source": "resolved",
        "updated": "2025-10-08T05:50:15.827Z"
      }
    }
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}