I have 2 of the normal Agilent E3646A power supplies and an Agilent GPIB/USB adapter.
All 3 devices have different GPIB addresses and the two supplies are connected together with a GPIB cable.
However, only the device works which is directly connected with the USB adapter.
I can connect to the other (it says "Remote Control" on the display as soon as I connect) but as soon as I send an SCPI command (e.g., RST) I get a timeout.
So, the connection works in principle but the communication not. Do I need to terminate the GPIB bus somehow? Can the cable be broken?