
'''
.. module:: skrf.vi
========================================================
vi (:mod:`skrf.vi`)
========================================================

This module holds Virtual Instruments, which are generally controlled
by GPIB/VISA commands. You must have a working VISA to use these
classes. See .


.. automodule:: skrf.vi.vna
.. automodule:: skrf.vi.sa
.. automodule:: skrf.vi.stages




'''
__test__=False
all = ['vna','sa','stages']


