N5444A - Keysight (Agilent) Probe

Keysight Agilent N5444A 2.92mm/3.5mm/SMA 30GHz (typical) InfiniiMax III Probe Head

Bandwidth:
30 GHz (typical)
Tr = 14.5 psec (10-90%, probe only with N2803A)

Input Impedance
DC input resistance: 55 Ω to Vterm
Input resistance> 10 kHz : 50 Ω to 0.909 x Vterm

Input Voltage Range
Input voltage range: 2.5 Vrms
Input common mode range: ±12 V DC to 250 Hz, ±2.5 V >250 Hz (must not exceed max input voltage)

Description:
N5444A Infiniimax III 2.92 mm/3.5 mm/SMA probe head provides 28 GHz bandwidth and allows you to connect two 2.92 mm, 3.5 mm or SMA cables to make a differential measurement on a single oscilloscope channel.

The N5444A provides for a termination to a common DC voltage rather than to ground, which is required for many signal standards. It is implemented such that from DC to ~1kHz the termination is 55 Ω to the termination voltage, and above ~10 kHz the termination is 50 Ω to 0.9 times the termination voltage. The termination voltage range is ±4 V with a minimum step of 5 mV and a maximum current of 80 mA. The termination voltage can be controlled internally by the oscilloscope or applied externally using the supplied DC jack.