N5444A Infiniimax Iii 2.92 Mm / 3.5 Mm / Sma Probe Head - Keysight InfiniiMax III N2800A Series User Manual

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InfiniiMax III Probe Heads

N5444A InfiniiMax III 2.92 mm / 3.5 mm / SMA Probe Head

The N5444A InfiniiMax III 2.92 mm/3.5 mm/SMA probe head provides 30 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
approximately 1 kHz, the termination is 55 Ohms to the termination voltage, and above
approximately 10 kHz, the termination is 50 Ohms to 0.9 times the termination voltage.
The termination voltage range is ±4V with a minimum step of 5 mV and a maximum
current of 80 mA.
Figure 42 N5444A InfiniiMax III 2.92mm/3.5mm/SMA Probe Head with the N5444-61601
You can control the termination voltage of the N5444A probe head using:
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N5448B Coaxial Phase Matched Cable Pair
For extending the cable length of the N5444A InfiniiMax III probe head and add flexibility
and convenience to the probing setup, you can order N5448B 10 inches (25 cm) long
coaxial phase matched cable pair. This cable pair supports 2.92 mm male-to-2.92 mm
male connection.
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Termination Voltage Cable
either the oscilloscope software.
or the supplied N5444-61601 cable connected to your own DC power supply. You may
want to use an external power supply if this aspect of your test system is automated or
you want finer control over the voltage than what the oscilloscope software interface
provides.
When the N5444-61601 cable is connected to the ±4V input connector on the
N OT E
InfiniiMax III probe's pod, the internal termination voltage is deactivated. Any
voltage applied to the banana leads on the N5444-61601 cable is buffered to
protect the probing system from inadvertent damage. A DC voltage between
±4V should be applied across the banana leads. You can verify the termination
voltage by probing the lugs on the N5444A probe head with a DVM.
InfiniiMax III Series Probes User's Guide