Keysight Technologies N7020A, User Manual

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Keysight N7020A and N7024A Power Rail Probes
User’s Guide
5 Using the Power Rail Probe
Requirements for Optimum Probe Performance 41
Low Source Impedance Required 41
Minimize Probe Ground Impedance for the Best Signal Fidelity 42
Connecting to the DUT 44
Replacing N7023A Probe Browser Tips 52
Avoiding Costly Repairs 53
Common Types of Power Integrity Measurements 55
This chapter describes requirements for ensuring optimum probe performance,
how to connect the probe to the DUT, and how to protect the oscilloscope and
probe from damage due to ESD.
CAUTION
Always wear an ESD wrist strap when working with active probes. Not doing so can result
in damage to the probe and to the oscilloscope’s input channel.
NOTE
If the N7020A input is connected to an S-series oscilloscope at vertical settings at or below
20 mV/div with more than 200 mV of applied offset with no signal on the probe input, the
probe output may be indeterminate. Upon zeroing the offset, increasing the vertical setting, or
connecting the probe input to a low impedance (power rail), the output will be correctly
restored.