This tab provides parameters for settings the pixel clock frequency, frame rate and exposure time for your uEye camera (see also Pixel Clock, Frame Rate and Exposure Time).

Figure 106: uEye properties - Camera
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Timing
• | Camera peak bandwidth
Maximum required bandwidth in MB/sec (peak load). This value is displayed in red if the available Gigabit Ethernet bandwidth is exceeded. |
• | Camera average bandwidth
Required average bandwidth in MB/sec. This value is displayed in red if the available Gigabit Ethernet bandwidth is exceeded.
The average bandwidth is calculated from the following data: Image size, image format, frame rate, and interface-related protocol overhead. |
• | Sensor (max. bandwidth)
Maximum data volume in Mpixels/sec created by the sensor. |
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The upper bandwidth limit of a Gigabit Ethernet camera depends on the chipset of the network card and on the network structure. If transfer errors occur, you need to reduce the frame rate.
With USB cameras, the upper limit depends on the USB chipset on the mainboard/USB card and on the number of USB devices connected. If transfer errors occur, reduce the pixel clock frequency.
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• | Pixel
Sets the clock rate at which the image data is read from the sensor. Changes to this parameter affect the frame rate and the exposure time.
Many CMOS sensors allow higher pixel clock frequencies in binning/subsampling mode. |
▪ | Optimum
When you select this check box, the highest possible pixel clock is determined and set automatically. The optimum pixel clock is the clock rate at which no transfer errors occur during the time (in seconds) set in the Auto pixel clock test period box. The longer you set the test period, the more reliable the determined pixel clock becomes. The total time it takes to automatically set the pixel clock is a bit longer than the test period setting. |
• | Frame rate (Freerun)
Sets the frame rate in freerun mode. The available frame rate range depends on the pixel clock setting. |
▪ | Hold
When you select this check box, the frame rate will remain constant if the pixel clock changes. If the frame rate cannot be maintained, it is set to the nearest possible value. |
▪ | Max
The camera is operated at the maximum frame rate that is possible at the current pixel clock setting. |
▪ | Auto
Select this check box to activate the Auto Frame Rate function. This function is only available when Auto Exposure Shutter is enabled. |
• | Exposure time
Sets the exposure time. The available exposure time range depends on the pixel clock setting and the frame rate. A low frame rate setting allows long exposure times. A high frame rate setting reduces the maximum possible exposure time. |
▪ | Hold
When you select this check box, the exposure time will remain constant if the frame rate changes. If the exposure time cannot be maintained, it is set to the nearest possible value. |
▪ | Max
The camera is operated at the maximum exposure time that is possible at the current frame rate. |
▪ | Auto
Select this check box to activate the Auto Exposure Shutter function. If the Auto check box is selected, the exposure time and pixel clock can no longer be adjusted manually. Selecting the Hold or Max check box deselects the Auto check box. |
▪ | Long-term
If you select this check box, you can set an exposure time of up to 10 minutes on many uEye CCD cameras. This function is only available in trigger mode. |
Default
Click this button to reset all parameters to the model-specific defaults.
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