{
  "signal": [
    {
      "name": "origin_A",
      "wave": "0...1.....0..."
    },
    {
      "name": "origin_B",
      "wave": "0...1.....0...",
      "node": "..........a..."
    },
    {
      "name": "pwm_A",
      "wave": "0...1.....0..."
    },
    {
      "name": "pwm_B",
      "wave": "0...1......0..",
      "node": "...........b..."
    }
  ],
  "edge": [
    "a|->b FED"
  ],
  "head": {
    "text": "FED on B, Bypass A"
  }
}