Advantest / Spectrum Analyzer / U3741/15/75 
10 : 2 Channel Input(50ohm)
28 : EMC Filter 
70 : High-Purity Spectrum analysis
76 : Tracking Generator (3GHz)
77 : Tracking Generator (6GHz)
11 : 2 Channel Input (75ohm)
15 : 1 Channel Input (75ohm)
75 : Tracking Generator (2.2GHz)
20 : High-Stability Grequency Reference Source
53 : Time-Domain Analysis (1 CH)
54 : Time-Domain Analysis (2 CH)