User`s guide

GigE Vision Hardware

16-33

If you receive an error that says a block or frame is being dropped because a packet

is unavailable for resend, one likely cause is that the buffer size of the socket could

not be set to the reported value, for example 1000000.

See your system administrator about using sysctl for net.core.rmem_max. For

example, the system administrator could try:

sysctl -w net.inet.udp.recvspace=1000000

If your camera does not start a new acquisition at block 1, the toolbox will attach the

block ID (frame ID) as metadata to the frame. If you want to know if you lost initial

frames, you can check the metadata – if the first frame's block ID is not 1, you may

have some missing frames. For example, use this command in MATLAB:

[d t m]=getdata(vid,2);

m(1)

The answer will include the Block ID and the FrameNumber.

Run the imaqsupport function for further troubleshooting information.