Pcm Input Displays: Notes

The PCM Inputs selection provides for testing of switches that input to the PCM. The input status is shown on the display as HI or LO, the input cycle status is shown as 0 until the PCM sees that the input has cycled from LO to HI or HI to LO since the selected input was first displayed. After the PCM has seen the input cycle, the 0 will change to an X to indicate that the input being tested has cycled and has "passed" the input test: