The system consists of PXI8176 controller in an 8 slot chassis connected via MXI to a PXI8212 GPIB/Ethernet card in an 18slot chassis. The controller locks up when the network cable is inserted into the 8212. The network cable is either a cross-over cable connected to another 8176 in an 8-slot chassis or a direct connection to a hub on our network. The controller unlocks after a short while, works fine for a few minutes then locks again. Trying to access the network will lock it straight away. The same 8212 card works fine when fitted to the same chassis as the controller. When locked up, neither the mouse or keyboard cause any response from the controller. Pings from either controlle
r generally fail - sometimes the first ping from the controller connected to the MXI is succesful but subsequent pings fail.