15.14.4 Data Playback
To playback data, use bittwist.exe. You can playback data on the same computer that the data
collection program resides on by simply connecting the sonar Ethernet port to an Ethernet switch.
The Ethernet switch is only to placate the NIC. You can also send data from a remote computer to
the data acquisition computer.
You need to determine the Ethernet interface number. Choose the interface that is connected to the
sonar system. To display Ethernet interfaces:
bittwist –d
To playback data:
bittwist -i 2 -l 0 out.pcap
This sends out.pcap to Ethernet interface 2 (-i 2) and loops continuously (-l 0). Use Ctrl-C to exit the
program.
If you don’t want to loop, use:
bittwist -i 2 out.pcap
Page 195 of 210
Version 5.0 Rev r002
Date 05-08-2014
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