{
  "t3r_port": "/dev/ttyACM0",
  "bbd_port": "/dev/ttyUSB0",
  "oscope_ip": "192.168.100.105",
  "laser_freq_hz": 20000.0,
  "save_dir": "/data/SRAS",
  "helios_port": "/dev/ttyUSB1"
}