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GPIO / Trigger / Strobe Interface
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The characteristics and default behavior of these interfaces are described below in Section “Optocoupler interface” and Section “TTL I/O's”. Those sections also provide examples how to connect the inputs.
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The schematic of newer cameras I/O interface can be found below. |
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Optocoupler outputs
iam The CORSIGHT camera is equipped with three four optically isolated output lines. One output optocoupler is fully independent, the other two three are connected with a common collector (Section “I/O connector”) due to limited number of pins on the I/O connector.
After power up, the optocoupler outputs are in high impedance state and they remain in that state until reconfigured from the software interface. Whenever the optocoupler output is disconnected in the SW interface, it gets in high impedance status. Automatic reconfiguration at start up can be done by means of user sets.
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The optocoupler output's logical state is understood as logical 0 when its output transistor is in high impedance, logical 1 if it is in low impedance mode. See schematic below. |
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The optocoupler output work with operating voltage range of 3.35-30 24 V. The maximal switched output current is 100 mA per optocoupler, higher current could damage the optocoupler output circuit. |
Strobe output
Any of the available optocoupler output can be used for strobe control. The output line mapping on the camera connectors is described in section Connector and cable description .
Schematic
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If the camera serial number has an X or Y in the 9th digit (e.g. 14A2GEBAX2042013) the I/O connector has the Prototype pinout. Expand below! |
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