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If the trigger signal is disconnected from the camera, the IOC will continue to report that the camera is connected but will stop acquiring images! If a camera is not triggering properly, verify that there are no connection interruptions between the host and the camera and take a look at the camera's sync trigger settings on its expert screen. |
(Screenshot of expert screen)
The expert screens for each camera can be pulled up from the CXI Home Screen, on the left sidebar under the IOC Cameras dropdown menu.
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Adimec Opal cameras will always sync to an external trigger, and actually work best in 'Free Run' mode. |
As a result of changing setups, hutch reconfiguration and different experiment requirements, the cameras at the sample chambers may come and go or even change types. Most often GigE type cameras such as the Allied Vision Manta 146C or "framegrabber" type cameras such as an Adimec Opal are used. GigE cameras are dirt simple, okay? GigEs are usually powered over ethernet so they need only be connected to a trigger signal and a network switch on the cds-cxi.pcdsn subnet with PoE capability to maintain function at the sample chamber. Frame grabber cameras, on the other hand, communicate over optical fiber which is transceived on both sides by EDT RCX camera links. RCX camera links require separate power (5V), and must be configured to the correct blink code in order to send and receive data between the camera and frame grabber PCI card. If a camera link fails then the IOC host will lose connection to the camera. Frame grabber cameras are usually powered using DC voltage supply available at the user patch panels. Network and fiber connections to the sample chamber cameras are also accessed via the user patch panels.
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