The PSX Block Occupied output is NOT a voltage output, it is a switch closure, so you will not measure a voltage.

  • Connect J4-3 to the +VE Sensor Common
  • Connect J4-4 to DS0X where X is the input (1-8) that you want to use
  • Now the DS0X input should be near 0 volts when PSX block is unoccupied, and greater than 5V when the PSX block is occupied