{  
  "actions":[  
    {  
      "action":"configure",
      "streams":[  
        {  
          "sources":[  
            {  
              "source":"feeder",
              "pixelFormats":[  
                {  
                  "pixelFormat":"rgb24"
                },
                {  
                  "pixelFormat":"gray8"
                }
              ]
            },
            {  
              "source":"feeder",
              "pixelFormats":[  
                {  
                  "pixelFormat":"bw1"
                }
              ]
            }
          ]
        },
        {  
          "sources":[  
            {  
              "source":"flatbed",
              "pixelFormats":[  
                {  
                  "pixelFormat":"rgb24"
                },
                {  
                  "pixelFormat":"gray8"
                }
              ]
            },
            {  
              "source":"flatbed",
              "pixelFormats":[  
                {  
                  "pixelFormat":"bw1"
                }
              ]
            }
          ]
        },
        {  
          "sources":[  
            {  
              "source":"feeder",
              "pixelFormats":[  
                {  
                  "pixelFormat":"rgb24"
                }
              ]
            }
          ]
        },
        {  
          "exception":"fail",
          "sources":[  
            {  
              "source":"flatbed",
              "pixelFormats":[  
                {  
                  "pixelFormat":"rgb24"
                }
              ]
            }
          ]
        }
      ]
    },
    {  
      "action":"scan"
    }
  ]
}