Keysight N2800A User Manual page 43

2
InfiniiMax III Probe Heads
Figure 44 N5444A Probe Head With N5448B Cables Attached
The maximum bend radius for the N5448B coaxial cable pair is 30 mm. Bending these
CAUTION
cables at too tight a radius or twisting the cables can cause damage, reduce
performance, and impact the precision of these cables.
Also, ensure that the plastic caps that are provided with these cables are installed
when the cables are not in use.
For details on the N5448B cable, refer to its guide available in the Document Library tab of
this product's page on www.keysight.com.
Probe Offset Calibration with the N5444A
To achieve more accurate probe offset calibration with the N5444A, an SMA
shorting adapter (Keysight part number: 1250-3999) is required. This adapter is
provided with the N5444A (with unit serial number US50072545 or higher) and
should be connected to the N5444A's "—" input connector during the calibration.
The latest Infiniium firmware includes instructions on the Probe Calibration dialog box to
remind you to install the adapter. If the Infiniium oscilloscope's firmware is older than
version 5.50.33, you can still attach the adapter and the resulting calibration will be valid.
InfiniiMax III Series Probes User's Guide 43