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

Contents

Introduction / 5

AutoProbe Interface / 5
External Power Supply / 5
Operating Modes / 5
Auto Demagnetization (Degauss) and Calibration / 5

N7026A Kit Components / 7
Characteristics and Specifications / 10
Compatibility with 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
Obtaining the Best Measurement Accuracy / 23

Installing and Removing Bushing / 24
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

Содержание N7026A

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

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

Страница 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...

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

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