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118 = Connector Specifications
BNC Connectors
The following note applies to all video, LTC, and Genlock connectors:
• A BNC connector used as an output will have a 75-ohm source impedance.
• A BNC connector used as an input will have a fixed 75-ohm termination.
GPI Connector
General purpose control inputs (GPI) may be applied to the GPI port, which is a DB-25-F
connector. These inputs are optically isolated from the Image Server 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 Image 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
1 GPI 1 14 GPI 1 RTN
2 GPI 2 15 GPI 2 RTN
3 GPI 3 16 GPI 3 RTN
4 GPI 4 17 GPI 4 RTN
5 GPI 5 18 GPI 5 RTN
6 GPI 6 19 GPI 6 RTN
7 N/C 20 N/C
8, 9, 10 GND 21, 22 +5V SOURCE (200MA MAX)
11 GPO 2 23 GPO 1
12 GPO 4 24 GPO 3
13 GPO 6 25 GPO 5