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N7026A 150 MHz AC/DC High Sensitivity Current Probes User Guide

Notices

© Keysight Technologies, Inc. 2017, 2018
No part of this manual may be reproduced in 

any form or by any means (including elec-

tronic storage and retrieval or translation into 

a foreign language) without prior agreement 

and written consent from Keysight Technolo-

gies, Inc. as governed by United States and 

international copyright laws.

Manual Part Number

N7026-97001

Edition

Second Edition, July 2018
Published by:

Keysight Technologies, Inc.

1400 Fountaingrove Parkway

Santa Rosa, CA, 95403

Warranty

The material contained in this document is 

provided “as is,” and is subject to being 

changed, without notice, in future editions. 

Further, to the maximum extent permitted 

by applicable law, Keysight disclaims all 

warranties, either express or implied, with 

regard to this manual and any information 

contained herein, including but not limited 

to the implied warranties of merchantability 

and fitness for a particular purpose. Key-

sight shall not be liable for errors or for inci-

dental or consequential damages in 

connection with the furnishing, use, or per-

formance of this document or of any infor-

mation contained herein. Should Keysight 

and the user have a separate written agree-

ment with warranty terms covering the 

material in this document that conflict with 

these terms, the warranty terms in the sepa-

rate agreement shall control.

Technology Licenses 

The hardware and/or software described in 

this document are furnished under a license 

and may be used or copied only in accor-

dance with the terms of such license.

U.S. Government Rights

The Software is "commercial computer soft-

ware," as defined by Federal Acquisition Reg-

ulation ("FAR") 2.101. Pursuant to FAR 

12.212 and 27.405-3 and Department of 

Defense FAR Supplement ("DFARS") 

227.7202, the U.S. government acquires 

commercial computer software under the 

same terms by which the software is custom-

arily provided to the public. Accordingly, 

Keysight provides the Software to U.S. gov-

ernment customers under its standard com-

mercial license, which is embodied in its End 

User License Agreement (EULA), a copy of 

which can be found at 

http://www.key-

sight.com/find/sweula

. The license set 

forth in the EULA represents the exclusive 

authority by which the U.S. government may 

use, modify, distribute, or disclose the Soft-

ware. The EULA and the license set forth 

therein, does not require or permit, among 

other things, that Keysight: (1) Furnish tech-

nical information related to commercial com-

puter software or commercial computer 

software documentation that is not custom-

arily provided to the public; or (2) Relinquish 

to, or otherwise provide, the  government 

rights in excess of these rights customarily 

provided to the public to use, modify, repro-

duce, release, perform, display, or disclose 

commercial computer software or commer-

cial computer software documentation. No 

additional government requirements beyond 

those set forth in the EULA shall apply, except 

to the extent that those terms, rights, or 

licenses are explicitly required from all pro-

viders of commercial computer software pur-

suant to the FAR and the DFARS and are set 

forth specifically in writing elsewhere in the 

EULA. Keysight shall be under no obligation 

to update, revise or otherwise modify the 

Software.  With respect to any technical data 

as defined by FAR 2.101, pursuant to FAR 

12.211 and 27.404.2 and DFARS 227.7102, 

the U.S. government acquires no greater than 

Limited Rights as defined in FAR 27.401 or 

DFAR 227.7103-5 (c), as applicable in any 

technical data.

Safety Notices

CAUTION

CAUTION

 notice denotes a hazard. It 

calls attention to an operating proce-

dure, practice, or the like that, if not 

correctly performed or adhered to, could 

result in damage to the product or loss 

of important data. Do not proceed 

beyond a 

CAUTION

 notice until the indi-

cated conditions are fully understood 

and met.

WARNING

A WARNING notice denotes a hazard. It 

calls attention to an operating proce-

dure, practice, or the like that, if not 

correctly performed or adhered to, 

could result in personal injury or death. 

Do not proceed beyond a WARNING 

notice until the indicated conditions 

are fully understood and met.

DANGER

A DANGER notice that incorrect opera-

tion presents extreme danger of acci-

dent resulting in death or serious injury 

to the user.

Summary of Contents for N7026A

Page 1: ...Keysight N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide...

Page 2: ...e which is embodied in its End User License Agreement EULA a copy of which can be found at http www key sight com find sweula The license set forth in the EULA represents the exclusive authority by wh...

Page 3: ...Oscilloscopes 12 Inspecting the Probe 13 Cleaning the Probe 14 Cleaning the Sensor Head 14 Safety Information 15 Powering the Probe 17 Using the External DC Power Supply 17 Setting up the Probe 19 Ob...

Page 4: ...4 N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide Contents Product Markings and Labels 38 Service Strategy 39 To return the Probe to Keysight Technologies for Service 39 Index...

Page 5: ...and attenuation setting on connection External Power Supply The probe also comes with an external power supply adapter that allows you to use this probe to measure large amplitude currents upto 30ARMS...

Page 6: ...onse In the DC to low frequency AC region the probe operation is based on the negative feedback system that includes the thin film Hall element as a detector In the high frequency region the probe ope...

Page 7: ...Guide 7 N7026A Kit Components Figure 1 N7026A Kit Components Sensor Head Current Direction Indication Opening Lever UNLOCK Indication Sensor Cable Output Connector with AutoProbe Interface Bushing De...

Page 8: ...head and the UNLOCK indication disappears it means that the sensor head is currently in the locked closed state Opening Lever Operating lever for opening the sensor head Always use this lever to open...

Page 9: ...ic Powering the Probe on page 17 to know when to use the external power supply for the probe Bushing Recommended for use in the probe s sensor aperture to minimize the measurement variation caused by...

Page 10: ...adapter 15 Apeak when the external power supply is NOT used Probe Sensitivity 1 V A and 0 2 V A automatically configured and switched by the oscilloscope Noise 250 Arms for 20 MHz bandwidth measuring...

Page 11: ...Conductors 5 mm 0 2 in Sensor Cable Length 1 5 m 59 0 in Dimensions Sensor 175 mm x 18 mm x 40 mm 6 89 in x 0 71 in x 1 6 in Dimensions Output Pod 28 mm x 39 mm x 145 mm 1 1 in x 1 5 in x 5 7 in Probe...

Page 12: ...that has the following features Minimum input impedance of 1M AutoProbe connector Infiniium Oscilloscopes InfiniiVision Oscilloscopes S Series 3000T X Series 9000 Series 3000A X Series 9000H Series 40...

Page 13: ...e 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 Ke...

Page 14: ...Wipe with clean water to remove the detergent and then dry thoroughly with a clean cloth Cleaning the Sensor Head The presence of foreign substances such as dust on the mating surfaces of the probe s...

Page 15: ...t or injury except that resulting due to defect in its product WARNING Do not install substitute parts or perform any unauthorized modification to the instrument Only Keysight service centers should p...

Page 16: ...ll effect element It may be damaged if subjected to sudden changes in ambient temperature or mechanical strain or shock and therefore great care should be exercised in handling it WARNING To avoid scr...

Page 17: ...oscilloscope s AutoProbe interface The probe s output connector has the AutoProbe 1 interface that allows the probe to automatically receive 12V power supplies from the oscilloscope on connection Wit...

Page 18: ...uses a degauss operation that can influence the DUT It is therefore recommended that you disconnect the probe from the circuit when inserting or removing the DC jack from the probe s external power su...

Page 19: ...otecting the Probe Against Damage Resulting from Excessive Input on page 28 NOTE When the probe is connected to an oscilloscope channel the AutoProbe interface recognizes the probe as an N7026A and au...

Page 20: ...nts 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 NOTE Immediately after po...

Page 21: ...e measured slide the opening lever of the probe towards the front of the sensor head into the Lock position While doing so ensure that the UNLOCK indication disappears which indicates that the sensor...

Page 22: ...NOTE Under certain circumstances oscillation may occur if the probe is connected to the AutoProbe interface while the oscilloscope is on This does not indicate a malfunction Oscillation can be stoppe...

Page 23: ...n is less than 1 65mm Refer to the topic Installing and Removing Bushing on page 24 to know more At high frequencies common mode noise may affect measurements taken on the high voltage side of circuit...

Page 24: ...perture 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 pr...

Page 25: ...correctly installed bushing is displayed in the following picture To remove bushing from the sensor aperture 1 Slide the probe s opening lever to open its sensor head 2 Gently pull the bushing straig...

Page 26: ...yed for a short time on the channel to which the probe is connected Wait until this waveform is no longer displayed To perform zero offset operation You can use one of the following methods for the ze...

Page 27: ...automatically start the demagnetization followed by the zero offset routine Follow the on screen instructions On InfiniiVision oscilloscopes a Press the scope s channel button 1 2 3 or 4 to which the...

Page 28: ...within the allowed current range and the probe is allowed to cool down the normal operation of the probe is restored WARNING The steps and guidelines provided in this topic must be followed to ensure...

Page 29: ...l probe current consumption exceeds the allowable AutoProbe interface current consumption The excess current consumption causes a temporary shutdown of the oscilloscope s power supply for safety Quit...

Page 30: ...tup Probe Configuration to access the Probe Configuration dialog box and then record the Attenuation scale factor On an InfiniiVision oscilloscope use the Probe softkey to record the attenuation scale...

Page 31: ...factor are shown below Figure 8 Attenuation scale factor on an Infiniium oscilloscope Figure 9 Attenuation scale factor on an InfiniiVision oscilloscope 4 Remove the N7026A probe from the oscilloscope...

Page 32: ...around the test cable 1 and lock the sensor head of the probe b Press the De Gauss button on the probe c Set the digital multimeter DMM 1 to Arms mode d Connect the test cable 1 to the positive termin...

Page 33: ...e 11 Setting up AC Current Generator 9 Set the DMM 2 to Vrms mode 10 As displayed in Figure 12 connect a BNC cable to the a N1022B adapter s output using the NMD 3 5mm M to 3 5mm F adapter and 3 5mm M...

Page 34: ...e 12 Complete Test Setup 11 Measure the current and record Vrms output of the probe as displayed on the DMM 2 12 Calculate gain as follows Gain Vrms scale factor Gain should be between 0 99 and 1 01 1...

Page 35: ...Probe N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide 35 Plots Figure 13 Frequency Response of N7026A for 1x Attenuation Mode Figure 14 Frequency Response of N7026A for 5x Attenuatio...

Page 36: ...36 N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide N7026A Probe Figure 15 Continuous Maximum Input Rating of N7026A Figure 16 Insert Impedance of N7026A...

Page 37: ...N7026A Probe N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide 37 Figure 17 Amplitude Accuracy Characteristic of N7026A...

Page 38: ...with this symbol when it is necessary for the user to refer to the instructions in the documentation KC certification mark to demonstrate compliance with the South Korean EMC requirements South Korea...

Page 39: ...information on a tag and attach it to the probe Name and address of the owner Probe model number Description of service required or failure indications 2 Retain all accessories 3 Return the probe in i...

Page 40: ...40 N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide N7026A Probe...

Page 41: ...rds 15 impedance insertion 10 insertion impedance 10 inspection 13 instrument markings 38 ISM1 A 38 L labels 38 M maximum altitude 11 maximum cable diameter 11 maximum current 10 maximum peak current...

Page 42: ...42 N7026A 150 MHz AC DC High Sensitivity Current Probes User s Guide Index...

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