Each sample chamber at CXI has two cameras – inline and off-axis – used for alignment and automation, experiment viewing, and analysis. The image streams are served via an EPICS IOC viewable from the camViewer, and can be included in the CXI primary or secondary DAQ data streams via the IOC recorder.
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As a result of changing setups, hutch reconfiguration and different experiment requirements, the type of camera used at a sample chamber may changecameras 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 communicate over optical fiber , which is transceived on either side 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. Network and fiber connections to the sample chamber cameras are routed from the racks to the camera via a user patch panel.
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If you are setting up a GigE at the sample chamber and cannot find a CDS PoE ethernet port on the patch panel because none of the ports are labeled properly, senselessly harass the nearest PCDS engineer. |
SOME INFO ABOUT PREFERED SETTINGS FOR THE CAMERAS.
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