360 Systems Model V-2000B Operation Manual page 80

GPI Inputs, Programming
Six GPI inputs are available for remote control of Image Server functions. Each is internally
pulled high to +5 volts, and is active when pulled to ground through a contact closure.
Two drop down menus provide independent selection of control functions and channel
assignments for each GPI input. Assignable functions include Play, Stop, Re-cue, Record,
and Pause. Each may be mapped to Channel 1, Channel 2, Channel 3, Channels 1+2,
Channels 2+3, or Channels 1+2+3.
78 = System Configuration
Figure 23: GPI Input Configuration Window