Chances are the instrument is simply using ports 546 and 547. Lots of applications just pick a port number without realizing they are reserved. There is nothing magic about the port numbers though If you are in an isolated network and both sides agree on the ports numbers anything can be used. It is best though to use port numbers which are not reserved. Ports 0 - 1023 are the well known ports and should not be used. Ports 1024 through 49151 are registered ports. Technically these should be registered with the IANA. The range for unregistered dynamic ports is from 49152 through 65535.
Also, since the trace is showing the communication over UDP you cannot use the TCP primatves (or VISA-TCP) to communicate with the device. You need to use the UDP primatives.
Mark Yedinak
Certified LabVIEW Architect
LabVIEW Champion
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot
