107
Keysight InfiniiMax III Series Probes
User’s Guide
7 Performance Plots
MX0109A and N2836A 26 GHz Solder-In Probe Heads (with N2803A)
N2838A/N5439A 25 GHz PCB ZIF Tip/Head (with N2803A)
N5440A/N5439A 28 GHz Ceramic ZIF Tip/Head (with N2803A)
N5447A/N5439A 28 GHz Ceramic High-Sensitivity ZIF Tip/Head (with N2803A)
N5441A 16 GHz Solder-In Head (with N2803A)
N5444A 30 GHz SMA 2.92 mm Head (with N2803A)
N5445A 30 GHz Browser Head, 1 mm span (with N2803A)
N5445A 30 GHz Browser Head, 2 mm span (with N2803A)
N5445A 30 GHz Browser Head, 3 mm span (with N2803A)
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.
• Since InfiniiMax III probes can be used with instruments that do not apply probe
correction, the plots below show the response of a typical probe head and typical probe
amp with no probe correction (i.e. probe hardware only) as well as the response with
probe correction based on the nominal probe head s parameters and measured probe
amp s parameters.
• Measurement data used for these plots and for determining probe correction were
made using Keysight vector network analyzers swept to 40GHz and calibrated with
NIST traceable calibration standards.
Содержание InfiniiMax III N2800A Series
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