Harris Performance 7000 - Manual (Page 57)

6800/7000 Series - Frames and Power Supplies Installation and Operation Manual 31
GPI Fault Reporting Chapter 7: 6804PS-1 Power Supply Module
GPI Fault Reporting
The GPI (General Purpose Input) is made up of two parts:
• A fault sensing circuit inside each power supply that monitors the
primary circuit and the two output voltages.
• A relay that provides isolation between Leitch equipment and the
GPI output connector at the rear of the frame.
There are three connections provided for GPI reporting:
• Normally closed (NC)
• Normally open (NO)
• Ground
The NC output and ground must be used in order to comply with
SMPTE standards.
The relay has two states for GPI reporting:
• OPEN: An Open output signifies that the GPI relay is activated and
the power supplies in the frame are present and operating correctly.
• CLOSED: A Closed output signifies that the GPI relay has been
deactivated, indicating an internal fault in either of the power
supplies or a loss of power to one or both of the supplies.