Grab Has Random Bad Data Or Noise; No Camera Exposure When Expected - Teledyne m640 User Manual

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.
This problem has been seen with network adapters that do not support jumbo frames but still
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report a false maximum packet frame size.
Test for a good acquisition by reducing the camera packet size used. Set the value to the
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default value of 1500 to verify acquisition before trying a higher value.
Other marginal NIC boards or ports can cause problems with packet transfers. Try alternative
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NIC adapters.
Review other reasons for such acquisition errors as described in the Teledyne DALSA Network
Imaging Module for Sapera LT manual.

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.
If using free-running mode, verify that the exposure period is set to the maximum possible
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for the set frame rate.
• Load the factory default from the Power-up Configuration in CamExpert. This will reset the
camera to its nominal acquisition rate.
Nano Series GigE Vision Camera
Troubleshooting • 233