Keysight Technologies InfiniiMax III Series, User Manual

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101
6
Performance Plots
N2836A 26 GHz Solder-In Head (with N2803A) 103
N2838A/N5439A 25 GHz PCB ZIF Tip/Head (with N2803A) 106
N5440A/N5439A 28 GHz Ceramic ZIF Tip/Head (with N2803A) 109
N5447A/N5439A 28 GHz Ceramic High-Sensitivity ZIF Tip/Head (with
N2803A) 112
N5441A 16 GHz Solder-In Head (with N2803A) 115
N5444A 28 GHz SMA 2.92 mm Head (with N2803A) 118
N5445A 30 GHz Browser Head, 1 mm span (with N2803A) 120
N5445A 30 GHz Browser Head, 2 mm span (with N2803A) 123
N5445A 30 GHz Browser Head, 3 mm span (with N2803A) 125
The performance plots in this chapter are for the N2803A 30 GHz probe
amplifier with various configurations InfiniiMax III probe heads. Items to
note are:
• When InfiniiMax III probes are used with Keysight Infiniium 90000
X-Series Oscilloscopes (and the Keysight DCA-X Wide-Bandwidth
Sampling Scopes in some cases), probe correction is applied to
enhance the probe accuracy.
• Probe correction is computed from the s parameters of the various
probe components such as probe heads, probe amps, and accessories.
• Typically, the largest variation in a probe’s response is due to variation
in the response of the probe amplifier. For the InfiniiMax III probes, the
s parameters of each probe amplifier are measured at manufacture and
stored in non-volatile memory in the probe amplifier, thus allowing the
removal of this component of variation.
• If care is taken in the manufacture of the probe heads and other
accessories, the variation in the probe response due to these
components is minimal since they tend to be simple passive devices.
Therefore, the s parameters for probe heads and other accessories are
based on an average of a cross-section of parts. These nominal s
parameters are stored in the oscilloscopes firmware based on the
model number of the probe head or accessory and used in conjunction
with the measured probe amplifiers s parameters to compute the
overall probe correction.