Output Ports
Organic diagram of the output ports of a set of system I/O
The four output ports are based on a uniform structure that includes the following elements:
- A programmable event signal generator composed with a set/reset flip-flop and a pair of configurable multiplexers that selects the set and the reset conditions from a panel of internal "events" issued by the acquisition and camera controller.
- An output multiplexer that selects the signal to be issued on the output port. Possible selections are :
- "LOW" to connect any of the 4 output port to the logical level corresponding to the OFF state of the opto-coupler
- "HIGH" to connect any of the 4 output port logical level corresponding to the OFF state of the opto-coupler
- "EVSIGx" to connect any of the four output port to the signal issued by the respective event signal generator
- "STROBE" to connect the IOUT1 port to the signal produced by the acquisition and camera controller
- "SB1" to connect the IOUT3 port to the first of the two signals produced by the SyncBus transmitter of the acquisition and camera controller
- "SB2" to connect the IOUT4 port to the second of the two signals produced by the SyncBus transmitter of the acquisition and camera controller
- The ISO electrical interface built with an opto-coupler device.
- A readback circuit allowing getting at any time the actual logic state of the output multiplexer.
Possible usages of the output ports
Port usage |
IOUT1 |
IOUT2 |
IOUT3 |
IOUT4 |
OK |
OK |
OK |
OK |
|
OK |
OK |
OK |
OK |
|
OK |
- |
- |
- |
|
- |
- |
OK |
OK |
The output ports are primarily managed using parameters belonging to the Input/Output Control category. However, for the strobe function and the SyncBus configuration, the ports are configured using Channel class parameters.
The following topics provide explanations about the selection of the port usage and each output port usage.