360 Systems MAXX-1200-HD, Руководство по эксплуатации

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MAXX-1200 Owner’s Manual Page 127
BNC Connectors
The following note applies to all video and Genlock connectors:
ƒ A BNC connector used as an output has a 75-ohm source impedance.
ƒ A BNC connector used as an input has a 75-ohm termination.
GPIO Connector
General purpose control inputs (GPI) may be applied to the GPIO port, which is a 26 pin
connector. These inputs are optically isolated from the server circuitry; individual floating
returns are provided. +5 volts may be sourced from pins 18 or 26, or provided from an
external source. Current limiting devices are provided within the server.
General purpose status outputs also appear on the GPI 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.
GPI Connector Pinout
Pin Signal Pin Signal
2 GPI 1 1 GPI 1 RTN
4 GPI 2 3 GPI 2 RTN
6 GPI 3 5 GPI 3 RTN
8 GPI 4 7 GPI 4 RTN
10 GPI 5 9 GPI 5 RTN
12 GPI 6 11 GPI 6 RTN
13,14 N/C 17 N/C
15, 16, 19 GND 18, 26 +5V S
OURCE
(200
M
A
MAX
)
20 GPO 1 21 GPO 2
22 GPO 3 23 GPO 4
24 GPO 5 25 GPO 6
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