Keysight N7026A User Manual
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Keysight N7026A User Manual

Ac/dc high sensitivity current probes
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Keysight N7026A 150 MHz
AC/DC High Sensitivity
Current Probes
User's
Guide

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Summary of Contents for Keysight N7026A

  • Page 1 Keysight N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 2 EULA. Keysight shall be under no obligation to update, revise or otherwise modify the Software. With respect to any technical data N7026A 150 MHz AC/DC High Sensitivity Current Probes User Guide...

  • Page 3: Table Of Contents

    Performing Demagnetization and Zero Offset / 26 Protecting the Probe Against Damage Resulting from Excessive Input / 28 Built-in Safety Function / 28 Performance Verification for N7026A / 30 Procedure / 30 Plots / 35 N7026A 150 MHz AC/DC High Sensitivity Current Probes User Guide...
  • Page 4 Contents Product Markings and Labels / 38 Service Strategy / 39 To return the Probe to Keysight Technologies for Service / 39 Index N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 5: Introduction

    User’s Guide Introduction The N7026A is a wide-band, DC to 150 MHz, clamp-on active current probe. It is ideal for acquiring high transient time signals such as those found in motor controllers, in switching power supplies, and in current amplifiers driving inductive loads.
  • Page 6 - In the high frequency region, the probe operates as a current transformer. To use this probe effectively and to ensure a long operational life, read this user’s guide carefully and retain it for future reference. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 7: N7026A Kit Components

    External Power Supply Adapter De-Gauss Button Output Connector (with AutoProbe Interface) UNLOCK Indication Current Direction Indication Opening Lever External Power Adapter Socket Sensor Head Sensor Cable Bushing Figure 1 N7026A Kit Components N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 8 The power supply adapter (part number 0950-5831) is included with the probe to power the probe using an external DC supply. Refer to the topic “Powering the Probe" on page 17 to know more. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 9 24 to know more. Sensor Cable The cable that connects the probe’s sensor to the output pod. To avoid damaging the cable, do not tightly bend or pull the cable. CAUTION N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 10: Characteristics And Specifications

    Requires 1MΩ termination. Valid for 23°C ±3°C (73°F ±5°F), at least 30 minutes after power on. b This is a specification and is guaranteed at 23°C ±3°C (73°F ±5°F. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 11 Operating Temperature Range 0°C to 40°C (32°F to 104°F) Storage Temperature Range –10°C to 50°C (14°F to 122°F) Maximum Relative Humidity 80% (no condensation) (Operating or Storage) Maximum Altitude 2000m N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 12: Compatibility With Oscilloscopes

    N7026A Probe Compatibility with Oscilloscopes You can use these probes with any Keysight Infiniium or InfiniiVision NOTE oscilloscope that has the following features. - Minimum input impedance of 1MΩ - AutoProbe connector Infiniium Oscilloscopes InfiniiVision Oscilloscopes S-Series 3000T X Series...

  • Page 13: Inspecting The Probe

    - Check the accessories. If the contents are incomplete or damaged, notify your Keysight Technologies Sales Office. - Inspect the probe. If there is mechanical damage or defect, or if the probe does not operate properly or pass calibration tests, notify your Keysight Technologies Sales Office.

  • Page 14: Cleaning The Probe

    The presence of foreign substances such as dust on the mating surfaces of the probe’s sensor head can cause acoustic resonance and degraded measurements, Therefore, keep these mating surfaces clean by gently wiping with a soft cloth. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 15: Safety Information

    Ensure that the input does not exceed the maximum rated current to avoid device damage, WARNING short circuiting, and electric shock. Do not subject the unit to vibrations or shocks during transport or handling. Be especially careful to WARNING avoid dropping the unit. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 16 (mains) power cord. The mains plug shall only be inserted in a socket outlet provided with a protective earth contact. You must not negate the protective action by using an extension cord (power cable) without a protective conductor (grounding). N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 17: Powering The Probe

    N7026A Probe Powering the Probe You can power the N7026A probe in the following two ways: Table 5 Powering the N7026A Probe Powering Option When to Use This Powering Option Using the oscilloscope’s AutoProbe The probe’s output connector has the AutoProbe 1 interface that interface allows the probe to automatically receive ±...
  • Page 18 - plug the power cord into the outlet and the external power supply adapter prior to inserting the jack into the probe’s power supply socket. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 19: Setting Up The Probe

    When the probe is connected to an oscilloscope channel, the AutoProbe interface N OTE recognizes the probe as an N7026A and automatically configures several settings on the channel to which the probe is connected. For instance, the 1 MΩ input impedance will be automatically selected on the oscilloscope, as the probe is plugged into the AutoProbe interface.
  • Page 20 If you want to measure larger currents, connect the probe to an external power supply. Plug the external power adapter shipped with the probe into the external power supply socket on the probe’s output connector. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 21 If the upper core is forced to open when the sensor head is locked, the open-close mechanism can be damaged. Upper Core Do Not Press Here! Slide the lever forward until the UNLOCK indication disappears Figure 4 Use the Opening Lever N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 22 AutoProbe interface while the oscilloscope is on. This does not indicate a malfunction. Oscillation can be stopped and operation can be restored to normal by opening and closing the sensor head. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 23: Obtaining The Best Measurement Accuracy

    When performing continuous measurements, it is necessary to be aware that the zero NOTE offset voltage will drift if the ambient temperature changes. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 24: Installing And Removing Bushing

    This minimizes measurement variations that may be caused due to the variation in the position of the conductor under test. Bushing (Keysight part number N7026-41201) is shipped with the N7026A probe. Avoid touching the sensor's core surfaces while installing or removing the bushing.
  • Page 25 To remove bushing from the sensor aperture Slide the probe’s opening lever to open its sensor head. Gently pull the bushing straight up and away from its installed position on the sensor aperture. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 26: Performing Demagnetization And Zero Offset

    - Or use the Probe menu in the Infiniium / InfiniiVision software GUI to automatically initiate the demagnetization followed by the zero offset operation. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 27 Press the scope’s channel button (1, 2, 3, or 4) to which the probe is connected. b Click the Probe softkey (under the display) and then press the key to automatically start the demagnetization followed by the zero offset routine. Follow the on-screen instructions. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 28: Protecting The Probe Against Damage Resulting From Excessive Input

    Figure 15 on page 36 to know about the maximum continuous input range for the N7026A probe. It is recommended not to exceed this range. Built-in Safety Function In the following situations, the generated heat activates a built-in safety function in WARNING the probe that blocks normal output to prevent probe damage resulting from heating.
  • Page 29 Quit the measurement and cycle the power of the oscilloscope, if the shutdown occurs. The typical probe current consumption from the AutoProbe interface is shown in Figure Figure 7 Typical Probe Consumption N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 30: Performance Verification For N7026A

    N7026A Probe Performance Verification for N7026A Use the following procedure to test the warranted Accuracy specifications for the N7026A probe (as listed on page 10). The recommended test interval to warrant performance of this probe is once a year. However, you can also test the probe’s performance as and when required using the recommended test equipment and by following the procedure documented in this chapter.
  • Page 31 Attenuation scale factor on an InfiniiVision oscilloscope Remove the N7026A probe from the oscilloscope. To provide power to the N7026A probe, connect the power cord of the N1022B probe adapter to the Power connector on the front panel of the 1143A power module. Then connect the N7026A probe’s output to the N1022B probe adapter’s input.
  • Page 32 Connect the test setup as shown in Figure 11 as per the following substeps. a Clamp the N7026A probe around the test cable <1> and lock the sensor head of the probe. b Press the De-Gauss button on the probe.
  • Page 33 N1022B adapter’s output using the NMD 3.5mm (M) to 3.5mm (F) adapter and 3.5mm (M) to BNC (F) adapter. b DMM <2> using a BNC (F)-to-banana adapter. This completes the test setup. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 34 Calculate gain as follows: Gain = * scale factor Gain should be between 0.99 and 1.01 (+/-1% gain accuracy). Remove the test cable and AC current generator from the N7026A probe. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 35: Plots

    N7026A Probe Plots Figure 13 Frequency Response of N7026A for 1x Attenuation Mode Figure 14 Frequency Response of N7026A for 5x Attenuation Mode N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 36 N7026A Probe Figure 15 Continuous Maximum Input Rating of N7026A Figure 16 Insert Impedance of N7026A N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 37 N7026A Probe Figure 17 Amplitude Accuracy Characteristic of N7026A N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 38: Product Markings And

    WEEE Directive Annex I, this product is classed as a “Monitoring and Control Instrumentation” product. Do not dispose in domestic household waste. To return unwanted products, contact your local Keysight office. N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

  • Page 39: To Return The Probe To Keysight Technologies For

    N7026A Probe Service Strategy For calibration testing, return the probe to a Keysight Service Center. If the probe is under warranty, normal warranty services apply. If the probe is not under warranty, repair costs will be applied. To return the Probe to Keysight Technologies for Service...
  • Page 40 N7026A Probe N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 41 IEC 61010-1 Safety Standards, sensor cable length, impedance, insertion, sensor head, insertion impedance, service, inspection, storage temperature range, instrument markings, ISM1-A, temperature coefficient, temperature range, labels, N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...
  • Page 42 Index N7026A 150 MHz AC/DC High Sensitivity Current Probes User’s Guide...

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