Hello,
I�m not exactly sure what your application is but here are the two paths I can see:
1) You�d like to do BERT testing on a data set. This data set is transferred to the PC via TCP/IP. In this case I would suggest using the standard TCP/IP VIs that are included with Labview 7.0 to transfer the data. These VIs are located in the following location on the Function Palette: �All Functions -> Communications -> TCP.�
There are also examples for using the TCP/IP VIs at the following location in the NI Example Finder: �Networking -> TCP & UDP�
Once this data is collected you could perform BERT on the data set using the Modulation Toolkit:
http://sine.ni.com/apps/we/nioc.vp?lang=US&cid=12855
2) You�d like to do BERT testing on the actual TCP/IP traff
ic that�s going by on the Ethernet segment your PC is attached to. The TCP/IP data that is received by Labview and most other TCP/IP applications has already had data packets with errors in them removed and retransmitted by the networking card and/or the operating system, so the data you would see from Labview shouldn�t have any errors in it. To get the raw data from the Ethernet segment would require low-level Windows API calls and/or access to the networking card driver itself.
Hope this helps! Let me know if there is anything I can help with or clarify.
Ken S.
National Instruments
