AJA FS1, Инструкция по установке и эксплуатации

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Appendix B:
GPI Connector Pinout
B
GPI Connections
GPI DE-9 Connector Pinout
The GPI inputs and outputs are electrically isolated from the power and ground on
the FS1 frame. There are two inputs and two outputs. Electrical isolation is provided
for up to two pieces of external equipment. The following guidelines apply to the two
GPI inputs and outputs:
•
Input 1 and Output 1 share a common isolated ground on pins 6 & 8 (I/O Ground
1),
• Input 2 and Output 2 share a common isolated ground on pins 7 & 9 (I/O Ground
2).
•
Pin 5, local chassis ground, may only be used as a reference when isolation is not
required.
• Both GPI inputs are internally pulled high through a 10K ohm resistor to an
isolated 5V supply, so that a relay contact closure or any device sinking at least
0.4 mA to ground will register a logic low.
Both GPI outputs are 5V TTL compatible, sourcing up to 6mA and sinking up to 4mA
each.
Pin Function
1 - GPI Input 1
2 - GPI Input 2
3 - GPI Output 1
Pin Function
6 - I/O Ground 1
7 - I/O Ground 2
8 - I/O Ground 1
5 4 3 2 1
9 8 7 6