Acquisition Error Without Timeout Messages; Figure 55: Random Bad Data Or Noise Example - Dalsa Calibir GXM640 User Manual

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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 Calibir 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
Calibir installation with CamExpert.
 Some 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.
Camera is functional but frame rate is lower than expected
 Verify Ethernet link speed. If the LAN connection is limited to 100 Mbps, the Calibir
frame rate maximum will be limited once the internal buffers are filled. See the
Teledyne DALSA
optimizations.
Calibir GXM640 IR Camera User's Manual

Figure 55: Random Bad Data or Noise Example

Network Imaging manual for information on network
Troubleshooting  147