I'm trying to comunicate with USB signal generator using pyvisa

import pyvisa
rm = pyvisa.ResourceManger()
dev = rm.open_resource('USB::13062::68:1106200007::INSTR')

unfortunately i get an exception : Exception: failed to set configuration [Errno 16] Resource busy ... if i run :

for line in rm.list_resources():
    print (line)

I get:


So raspberry does see the device.

Can anybody please help me with that issue?

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