Software automates probe characterization and correction - Embedded.com

Software automates probe characterization and correction

Software for use on the Agilent Infiniium 90000 X-series and 90000A series oscilloscopes works in conjunction with built-in hardware to provide automatic characterization and correction of the response of any path to a scope input using no external equipment.

The analysis provided by PrecisionProbe software improves measurement margins and are particularly useful where the probe setups consume measurement margins without it being apparent to the user.
 
Cables and probes are inherently lossy and depending on the configuration, the loss can be substantial at times. At other times it can be just enough to cause variation in measurements, making results inconsistent. PFrequency response and phase characteristics can vary from probe to probe, so each probe and cable must be characterized and accounted for to ensure the truest representation of the signal.

The N2809A PrecisionProbe software corrects for cable and channel insertion loss, corrects for probing issues such as phase linearity and magnitude flatness and matches frequency response and phase of every cable or probe on a circuit. It also characterizes  and compensates for loss on channel paths such as switches without adding additional equipment and characterizes probe impedance profiles.

It provides full AC calibration for probes, not just DC calibration and skew correction and is not dependent on externally generated s-parameter characterization files. These files, commonly generated from other instruments such as time-domain reflectometers or vector network analyzers, can be time-consuming to set up and require expertise to generate accurate and consistent results. Instead, PrecisionProbe uses a built-in signal source on the oscilloscope to automatically generate the files. A software setup wizard eases the characterization of channel elements such as probes, cables and switches .
 
The software can be ordered with the purchase of 90000A and 90000 X-Series oscilloscopes. It is also available as a server-based license as N5435A-026 (basic) or N5435A-027 (advanced).
 

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