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Known Issues

In this section you will find solutions to known issues that we have came across while testing communication between Adaptive Vision products and different camera models through GigE Vision.

Imaging Source cameras

There might be problems with image acquisition from Imaging Source cameras through GigE. It is caused by the implementation (regarding caching and packet size) of GigE Vision standard in those cameras and as a result no image can be seen and an error message about timeout while waiting for video frame is posted.

To resolve this issue, camera restart (this has to be done only once, after you encounter the problem with image acquisition) and changing some parameters in Adaptive Vision GenAPI configuration are required. Parameters which should be changed are:

• Enable GenAPI Cache (should be set to false),
• Disable Packet Size Negotiation (should be set to true),
• Enable Constant Packet Size (should be set to false).

In order to change these parameters you should (before opening device connection) open library configuration with function GigEVision_OpenSystemConfiguration, and using GenApi function set the following parameters (please note that these parameters have to be set separately for each application):

• GevAppTLEnableGenApiCache (Boolean) to False
• GevAppTLDisablePacketSizeNegotiation (Boolean) to True
• GevAppTLEnableConstantPacketSize (Boolean) to False

Flir cameras

There might be problems with image acquisition from Flir cameras through GigE. It is caused by the implementation (regarding image trailer data) of GigE Vision standard in those cameras and as a result no image can be seen.

To resolve this issue, camera restart (this has to be done only once, after you encounter the problem with image acquisition) and changing some parameter in Adaptive Vision GenAPI configuration are required. Parameter which should be changed is:

• Enable Ignore Gev Image Trailer data (should be set to True).

In order to change this parameter you should (before opening device connection) open library configuration with function GigEVision_OpenSystemConfiguration, and using GenApi function set the following parameter (please note that this parameter has to be set separately for each application):

• GevAppTLIgnoreGevImageTrailer (Boolean) to True

Camera is detected but data transmission is not possible

Detection of the camera works well and the camera can be seen in 'GigE Vision Device Manager' application, but it's not possible to access the settings of the camera and image acquisition is not possible as well. The camera is connected to the computer using a network switch and the IP address of the camera starts with 169.254. The error message is 'Unable to open device control channel. Device not respond.'

If the symptoms described above are present, the problem is the IP address of the camera. The camera has wrong IP address set or obtained with DHCP. Try to restart the camera and/or the network switch. For some cameras the working solution is to wait some time (up to one minute) for the proper settings.