VISA error -1073807339

[dos 177]

Hello All:
I am trying to read waveform from TDS3054 scope trough GPIB.
Sometimes i have the error:
VISA: (Hex 0xBFFF0015) Timeout expired before operation completed.
I tried to increase timeout property, but it's seen that GPIB is locking. If i turn off the scope and turn on again, it is working good, until i have again this error.
What can i do, help me!!!!!!!!!!!!!!!!!!!!!

[saikey]

If this really is a simple timeout, and for whatever reason you are unable to increase the VISA timeout just add a delay between the write and read calls.
something like
int data[1024];
viPrintf(vi, ":WAV:DATA?", VI_NULL);
Sleep(100);
viScanf(vi, "%,1024d", data);

[ansoft]

How do you program this delay in labview?