1 86103B 1000NM - 1600NM 622/2488 MB/S FILTERS SN US41400103. 1 86103A 980NM - 1625NM 155/622 MB/S FILTERS SN US39440261. INFINIUM DCA WIDE BAND-WITH OSCILLOSCOPE. All modules from the 54750A High-Bandwidth Digitizing Oscilloscope family.
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