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Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Bandwidth Boosting Techniques for the Infiniimax Probe Amp and Probe Head

Applikationsberichte

Have you ever wished your probe could perform at a slightly higher bandwidth than what’s rated on the label?

 

Keysight InfiniiMax differential probes are DSP corrected to have a flat magnitude and phase response to provide the highest possible accuracy.

 

The bandwidth chosen to correct to is typically around 3 dB non-corrected bandwidth. Usually, extending the bandwidth much beyond that point will increase the noise floor, and if pushed even further, can cause unrealistic noise artifacts.

 

However, the N5381A/B solder-in probe head in combination with the InfiniiMax 1169A/B probe amp is an excellent candidate for extending the bandwidth beyond the 3dB point because the N5381A/B is peaked past the normal 12 GHz bandwidth, and the peaking of the probe head can help compensate for the roll-off of the probe amp bandwidth.

 

This application note presents the techniques used to extend the bandwidth performance of the InfiniiMax 1169A/B and the N5381A/B solder-in head using the PrecisionProbe application on Infiniium realtime oscilloscope.

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