Dalsa C1240, User Manual

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Nano Series GigE Vision Camera Troubleshooting • 303
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Run the Sapera Log Viewer: Start•Programs•Teledyne DALSA•Sapera LT•Tools•Log
Viewer. Start the Nano acquisition program, such as CamExpert. There should not be any
“packet resend” messages, else this indicates a control or video transmission problem due
to poor connections or extremely high EMI environments. 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 Nano in various computers and setups. See the Teledyne DALSA Network
Imaging manual for information on network optimizations.
Grab has Random Bad Data or Noise
The problem is seen as random noise and missing sections of video data from the acquisition. All
configuration parameters seem correct and the Ethernet cable is secure. The following image
shows an example of this type of bad acquisition while testing a Genie installation with CamExpert.
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This problem has been seen with network adapters that do not support jumbo frames but
still report a false maximum packet frame size.
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Test for a good acquisition by reducing the camera packet size used. Set the value to the
default value of 1500 to verify acquisition before trying a higher value.
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Other marginal NIC boards or ports can cause problems with packet transfers. Try
alternative NIC adapters.
Review other reasons for such acquisition errors as described in the Teledyne DALSA Network
Imaging Module for Sapera LT manual.