GPI Port
The GPI port on the back of the chassis is used to connect one or two external AirCleaner Hardware Control Panels. The four GPI inputs are fixed to a video and audio concealment trigger for Users one and two. All GPIs are level triggered and remain triggered for as long as the concealment is triggered (the circuit is closed).
| Pin | Signal |
|---|---|
| 1 | Video Concealment for User 1 |
| 2 | Audio Concealment for User 1 |
| 3 | Video Concealment for User 2 |
| 4 | Audio Concealment for User 2 |
| 51 | Manual Bypass Switch |
| 62 | Tally 1 (External Lamp - Manual Bypass Active) |
| 73 | Tally 2 (External Lamp - Concealment Active) |
| 8 | Tally Common |
| 9 | Ground |
- 1 Pins 5 and 9 are used to connect an external contact closure switch (not provided) to remotely operate the Manual Bypass function.
- 2 Pins 6 and 8 are used to connect an external tally lamp (not provided) that is activated while the Manual Bypass is active.
- 3 Pins 7 and 8 are used to connect an external tally lamp (not provided) that is activated while an Audio or Video concealment is active.