Dalsa Linea SWIR GigE Series User Manual page 134

Acquisition Error without Timeout Messages
Streaming video issues range from total loss of image data to occasional loss of video data
packets. The following section describes conditions identified by Teledyne DALSA engineering while
working with GigE Vision cameras in various computers and setups. See Teledyne DALSA's Network
Imaging manual for information on network optimizations.
No camera exposure when expected
Verify by using the camera in free-running mode. Do not use external trigger mode when
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testing a camera setup.
• While using free-running mode verify the exposure period is set to the maximum for the set
frame rate.
• Load Factory Default from the Power-up Configuration in CamExpert. This will reset the camera
to its nominal acquisition rate.
Camera is functional but acquisition rate is lower than expected
Verify Ethernet link speed. If the LAN connection is limited to 100 Mbps the line rate maximum
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will be limited once the internal buffers are filled. Review the Teledyne DALSA Network Imaging
manual for information on network optimizations.
If using an external trigger, verify the trigger source rate and camera parameters such as
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trigger to exposure delay.
Camera acquisition is good but acquisition rate is lower than expected
• While running CamExpert and grabbing in free-run mode at the maximum frame rate, start the
Sapera Monitor tool from the Sapera Tools installed with Sapera.
Make sure the Memory Overflow event monitor is enabled.
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Continue grabbing at maximum frame rate. If any memory overflow events are counted, the
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internal buffer could not be transmitted on time and was discarded. Such a condition may occur
at high frame rate cameras.
Note: Sapera CamExpert tool limits the maximum frame rate possible due to CamExpert
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generating an interrupt for each acquired frame. The Sapera Grab Demo may be better suited
for testing at higher frame rates.
Verify network parameters are optimal as described in the Teledyne DALSA's Network Imaging
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Module manual. Ensure the host computer is not executing other network intensive tasks. Try a
different Gigabit NIC.
Note: Changed acquisition frame rate becomes active after the acquisition is stopped and
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restarted.
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132 Troubleshooting Linea SWIR GigE Series Camera