360 Systems MAXX2400HD - Manual (Page 128)

MAXX-2400HD Owner’s Manual Page 127
BNC Connectors
The following note applies to all video and Genlock connectors:
• A BNC connector used as an output has a 75-ohm source impedance.
• A BNC connector used as an input has a 75-ohm termination.
GPIO Connectors
General purpose control inputs (GPI) may be applied to the GPIO port, which is a DB-25-F
connector. These inputs are optically isolated from the MAXX 2400 circuitry; individual
floating returns are provided. +5 volts may be sourced from pins 21 or 22, or provided from
an external source. Current limiting devices are provided within the MAXX 2400.
General purpose outputs also appear on the GPIO connector. Open-collector outputs are
provided as status outputs, and may be used to drive an external LED or control input.
Refer to the connector pin-out table and partial schematic, following.
GPIO Connector Pinout
Numbers in parentheses indicate numbering of signals on GPIO Connector 2
Pin Signal Pin Signal
1 GPI 1 (7) 14 GPI 1 (7) RTN
2 GPI 2 (8) 15 GPI 2 (8) RTN
3 GPI 3 (9) 16 GPI 3 (9) RTN
4 GPI 4 (10) 17 GPI 4 (10) RTN
5 GPI 5 (11) 18 GPI 5 (11) RTN
6 GPI 6 (12) 19 GPI 6 (12) RTN
7 N/C 20 N/C
8, 9, 10 GND 21, 22 +5V S OURCE (200 M A MAX )
11 GPO 2 (8) 23 GPO 1 (7)
12 GPO 4 (10) 24 GPO 3 (9)
13 GPO 6 (12) 25 GPO 5 (11)
Warning: Incorrect wiring of GPIO connector may damage its interface circuitry.