Linea Lite GigE Series Camera
Troubleshooting
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143
Acquisition Error without Timeout Messages
Streaming video problems range from total loss of image data to occasional loss of random 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 the Teledyne DALSA
Network Imaging manual for information on network optimizations.
No camera exposure when expected
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Verify by using the camera in free-running mode. Do not use external trigger mode when
testing a camera setup.
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If using free-running mode, verify that the exposure period is set to the maximum possible
for the set frame rate.
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Load factory default from the Power-up Configuration in CamExpert. This will reset the
camera to its nominal acquisition rate.
Camera is functional but frame rate is lower than expected
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Verify Ethernet link speed. If the LAN connection is limited to 100 Mbps, the line rate
maximum will be limited once the internal buffers are filled. See the Teledyne DALSA
Network Imaging manual for information on network optimizations.
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If using an external trigger, verify the trigger source rate and camera parameters such as
trigger to exposure delay.
Camera acquisition is good but frame rate is lower than expected
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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.
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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
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 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 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 restarted.
Camera is functional, line rate is as expected, but image is black
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Verify that the lens iris is open.
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Aim the Linea Lite GigE at a bright light source.
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Check that the programmed exposure duration is not too short or set it to maximum. See
Sensor Control Category.
Using CamExpert set the Linea Lite GigE to output its Internal Pattern Generator. This step is
typically done for any camera installation to quickly verify the Linea Lite GigE and its software
package. See Internal Test Image Generator for information on using CamExpert to select internal
patterns.
Preliminary
