I am trying to use the VISA lock and unlock features in a Labview program to help with what seems to be conflicts between a 34970A (data acq) and a 6060B (active load) which I have on a GPIB bus.  The bus is accessed through a laptop using a USB/GPIB cable.  Any tricks of the trade that some one can pass on?  We are obviously not high level Labview developers.  Thanks for any help you can throw our way.