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Oscilloscope Single-Ended Active Probe

Active Probe Oscilloscope

Active Probe

Selecting the right probe for your application is the first step toward making reliable oscilloscope measurements. There are 2 main types of oscilloscope probes, active probe and passive probe. Passive probes do not require external probe power. Active probes do require external probe power for the active components in the probe, such as transistors and amplifiers, and provide higher bandwidth performance than passive probes.

Active probe differs from the passive probes because the probe tip contains a small active amplifier built into the probe body near the probe tip so that the probe input capacitance can be kept very small, usually less than 2pF.

This low capacitance results in high input impedance on high frequencies. It has the best overall combination of resistive and capacitive loading. With such low loading, active probes can be used on high-impedance circuits that would be seriously loaded by passive probes. Active probe is the least intrusive of all the probes.

Typically you would choose a single-ended active probe for measuring single-ended signals (a voltage referenced to ground) and differential active probes for measuring differential signals (a plus voltage versus a minus voltage). The effective ground plane between the signal connections in differential probes is more ideal than most of the ground connections in single-ended probes. This ground plane effectively connects the probe tip ground to the device-under-test (DUT) ground with very low impedance. Therefore differential probes can make even better measurements on single-ended signals than single-ended probes can.

Compare All Single-Ended Active Probes (5)

Find an Oscilloscope Probe

  • N2795A Active Probe, 1 GHz N2795A Active Probe, 1 GHz (1) 

    N2795A Active Probe, 1 GHz

    The N2795A 1 GHz active probe is a low-cost single-ended active probe with the AutoProbe interface.

  • N2796A Active Probe, 2 GHz N2796A Active Probe, 2 GHz (1) 

    N2796A Active Probe, 2 GHz

    The N2796A 2 GHz active probe is a low-cost single-ended active probe with the AutoProbe interface.

  • N2797A Extreme Temperature Active Probe, 1.5 GHz N2797A Extreme Temperature Active Probe, 1.5 GHz (1) 

    N2797A Extreme Temperature Active Probe, 1.5 GHz

    • Wide operating temperature range of –40 to +85 °C for extreme temperature environmental chamber testing
    • 1.5 GHz bandwidth (-3 dB)
    • Direct connection to AutoProbe interface (no power supply required)

  • N7020A 2GHz Power Rail Probe N7020A 2GHz Power Rail Probe (1) 

    N7020A 2GHz Power Rail Probe

    • 1:1 attenuation ratio probe adding on 10% to the baseline noise of the oscilloscope
    • Large +/-24 V offset range
    • 50 kΩ DC input impedance

  • N7024A 6GHz Power Rail Probe N7024A 6GHz Power Rail Probe (1) 

    N7024A 6GHz Power Rail Probe

    • 6GHz bandwidth to find high-speed transients
    • 1:1 attenuation ratio probe keeps noise floor low
    • Large +/-15.25V offset range

Oscilloscope Single-Ended Active Probes [Discontinued]
Product support information for your discontinued and obsolete oscilloscope single-ended active probes.