{
  "node": {
    "id": "block:native-chirp",
    "type": "Block",
    "label": "Linear frequency sweep",
    "properties": {
      "id": "native-chirp",
      "name": "Linear frequency sweep",
      "kind": "studio",
      "summary": "Sweeps frequency linearly, then continues at the final frequency without a phase discontinuity.",
      "behavior": "τ = max(t − delay, 0); s = min(τ, duration). cycles = f₀s + (f₁−f₀)s²/(2 duration) + f₁ max(τ−duration,0). y = bias + amplitude × sin(2π cycles + phase).",
      "ports": [
        {
          "name": "out0",
          "direction": "output",
          "unit": "1",
          "description": "Signal; real scalar.",
          "shape": [],
          "elementType": "real"
        }
      ],
      "parameters": [
        {
          "key": "params[0]",
          "label": "Amplitude",
          "unit": "1",
          "default": 1,
          "description": "Configured value for Amplitude."
        },
        {
          "key": "params[1]",
          "label": "Initial frequency",
          "unit": "Hz",
          "default": 1,
          "description": "Configured value for Initial frequency."
        },
        {
          "key": "params[2]",
          "label": "Final frequency",
          "unit": "Hz",
          "default": 3,
          "description": "Configured value for Final frequency."
        },
        {
          "key": "params[3]",
          "label": "Sweep duration",
          "unit": "s",
          "default": 2,
          "description": "Configured value for Sweep duration."
        },
        {
          "key": "params[4]",
          "label": "Initial phase",
          "unit": "rad",
          "default": 0,
          "description": "Configured value for Initial phase."
        },
        {
          "key": "params[5]",
          "label": "Bias",
          "unit": "1",
          "default": 0,
          "description": "Configured value for Bias."
        },
        {
          "key": "params[6]",
          "label": "Start delay",
          "unit": "s",
          "default": 0,
          "description": "Configured value for Start delay."
        }
      ],
      "equations": [
        "τ = max(t − delay, 0); s = min(τ, duration)",
        "cycles = f₀s + (f₁−f₀)s²/(2 duration) + f₁ max(τ−duration,0)",
        "y = bias + amplitude × sin(2π cycles + phase)"
      ],
      "example": {
        "title": "Linear frequency sweep — worked example",
        "text": "Use the configured source parameters. Signal at 0 s = 0; Signal at 0.75 s = 0.19509032201612825.",
        "url": "https://design.lemonergy.com/cosim.html?example=block-native-chirp",
        "label": "Open Studio example",
        "inputs": [],
        "checks": [
          {
            "port": "out0",
            "label": "Signal",
            "atS": 0,
            "value": 0,
            "unit": "1",
            "tolerance": 1e-08
          },
          {
            "port": "out0",
            "label": "Signal",
            "atS": 0.75,
            "value": 0.19509032201612825,
            "unit": "1",
            "tolerance": 1e-08
          }
        ]
      },
      "limits": [
        "Only a linear frequency sweep is implemented. Before the delay the initial phase value is held; after the sweep frequency remains at its final value."
      ],
      "references": [],
      "referenceNote": "This software operation is defined by its public contract and worked example; no external research result is claimed.",
      "caseIds": [
        "native-native-chirp"
      ],
      "availability": {
        "status": "released",
        "label": "Available in Lemonergy Studio",
        "detail": "The bundled example is available in the production release verified on 28 October 2026. The parameters and examples here are synthetic teaching fixtures, not a characterized cell or a validated operating limit."
      },
      "evidence": [
        "docs/glossary/native-block-verification.json"
      ],
      "sourceRepository": "Lemonergy Studio public contract",
      "sourceRevision": "verification-2026-10-27",
      "exampleTraces": [
        {
          "id": "native-chirp",
          "url": "https://lemonergy.com/learn/glossary/api/traces/native-chirp.json?v=929b09974b9e",
          "title": "Linear frequency sweep recorded example",
          "exampleId": "block-native-chirp",
          "source": "Executed synthetic Lemonergy Studio example",
          "recordedOn": "2026-10-28",
          "points": 2,
          "channels": 1,
          "omittedChannels": 0,
          "interpolation": "linear",
          "solver": {
            "method": "dormand-prince-45",
            "reason": "no-continuous-states"
          }
        }
      ],
      "type": "native-chirp",
      "implementationId": "native-chirp",
      "url": "https://lemonergy.com/learn/glossary/blocks/native-chirp/",
      "documentationUrl": "https://lemonergy.com/learn/glossary/blocks/native-chirp/",
      "sourceFile": "block-library.json",
      "reviewed": "2026-10-27",
      "releaseEvidence": {
        "environment": "production",
        "status": "verified",
        "revision": "e76cadfc203e15eb41f3478d8b1044a5b851953d",
        "verifiedOn": "2026-10-28",
        "exampleUrls": [
          "https://design.lemonergy.com/cosim.html?example=block-native-chirp"
        ]
      }
    }
  },
  "incoming": [
    {
      "id": "edge:usesBlock/native-native-chirp/0",
      "type": "usesBlock",
      "source": "workflow:native-native-chirp",
      "target": "block:native-chirp",
      "properties": {
        "sourceFile": "wiki-blocks.json",
        "position": 0,
        "name": "Linear frequency sweep",
        "type": "native-chirp",
        "role": "τ = max(t − delay, 0); s = min(τ, duration). cycles = f₀s + (f₁−f₀)s²/(2 duration) + f₁ max(τ−duration,0). y = bias + amplitude × sin(2π cycles + phase).",
        "settings": [
          "Use the block reference for settings and connections.",
          "Bundled example verified on the production release of 28 October 2026."
        ]
      }
    }
  ],
  "outgoing": [],
  "neighbors": [
    {
      "id": "workflow:native-native-chirp",
      "type": "Workflow",
      "label": "Linear frequency sweep — worked example",
      "properties": {
        "id": "native-native-chirp",
        "title": "Linear frequency sweep — worked example",
        "kind": "studio",
        "summary": "Sweeps frequency linearly, then continues at the final frequency without a phase discontinuity.",
        "steps": [
          "Review the interface, units and model limits.",
          "Open the Studio example and run its bundled model.",
          "Compare outputs with the numerical checks; change one input and run again."
        ],
        "example": "Use the configured source parameters. Signal at 0 s = 0; Signal at 0.75 s = 0.19509032201612825.",
        "observe": "Inspect the output channels and checks on the block reference page.",
        "limits": "Only a linear frequency sweep is implemented. Before the delay the initial phase value is held; after the sweep frequency remains at its final value.",
        "url": "https://design.lemonergy.com/cosim.html?example=block-native-chirp",
        "label": "Open Studio example",
        "evidence": [
          "docs/glossary/native-block-verification.json"
        ]
      }
    }
  ]
}