2009-10-20 Tektronix
2009-05-08 Tektronix
2011-11-21 R&S
2013-05-09 R&S
2009-02-24 Agilent
2013-07-18 Anritsu
2013-04-24 Rigol
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2010-01-13 Tektronix
2012-04-19 Tektronix
2009-03-25 NI
2013-05-09 R&S
2010-02-10 freescale
2015-03-26 itech