InfiniiMax III SMA Probe Head
The Keysight 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 Keysight N5444A provides for termination to a standard 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 oscilloscope can control the termination voltage internally or be applied externally using the supplied DC jack.
Keysight N5444A InfiniiMax III Probe Head specs:
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)