Hello
We have just release our RDM sniffer Applictaion it consists of free software and a slightly modified DMX USB Pro interface.
The sniffer will catch and decode and RDM packets on the network, it has proven to be very usefull to us while implementing our RDM library
You can find it here
http://www.enttec.com/index.php?menu=Products∏=70530&show=sniffer
Thanks
Nic
http://www.enttec.com