InfiniiMax III 2.92 mm / 3.5 mm / SMA probe head Bandwidth: 28 GHz, Tr = 18.8 ps Input impedance: DC input resistance: 55 Ω-Vterm Input resistance (less than 10 kHz): 50 Ω-0.909 x Vterm Input voltage range: 2.5 Vrms Input common-mode range: ± 12 V DC ~ 250 Hz, ± 2.5 V> 250 Hz