Agilent Technologies N2782B Wartungshandbuch

Agilent TechnologiesAgilent N2780A/B, N2781A/B, N2782A/B, and N2783A/B Current ProbesUser’s and Service Guidemedium_standard.book Page 1 Friday, Sep

10 N2780/81/82/83 User’s and Service GuideWARNING• If the waveform measuring instrument being connected to the output terminal (BNC) on this device is

N2780/81/82/83 User’s and Service Guide 11CAUTION• To avoid damage to the device, protect it from vibration or shock during transport and handling, an

12 N2780/81/82/83 User’s and Service GuideCAUTION• Do not place any unclamped conductor with an electric current of a frequency of 10 kHz or more near

N2780/81/82/83 User’s and Service Guide 13Cleaning the ProbeIf the probe requires cleaning, disconnect it from the oscilloscope and clean it with a so

14 N2780/81/82/83 User’s and Service GuideDescription of Probe Parts for the N2780A/B and N2781A/B1 ClampThis clamps around the conductor to be measur

N2780/81/82/83 User’s and Service Guide 155 BarrierThis structure reduces the likelihood of touching the conductor while testing, and indicates the li

16 N2780/81/82/83 User’s and Service GuideDescription of Probe Parts for the N2782A/B and N2783A/B1 Opening leverOperating lever for opening the senso

N2780/81/82/83 User’s and Service Guide 17This demagnetizes the core if it has been magnetized by switching the power on and off, or by an excessive i

18 N2780/81/82/83 User’s and Service GuideSpecifications and CharacteristicsThe following specifications are guaranteed.Specifications (Warranted)N278

N2780/81/82/83 User’s and Service Guide 19Characteristics (Non-warranted)N2780A/B N2781A/B N2782A/B N2783A/BBandwidth DC to 2 MHz (-3 dB) (Typical cha

N2780/81/82/83 User’s and Service GuideNotices© Agilent Technologies, Inc. 2010No part of this manual may be reproduced in any form or by any means (i

20 N2780/81/82/83 User’s and Service GuideGeneral CharacteristicsEnvironmental SpecificationsN2780A/B N2781A/B N2782A/B N2783A/BDiameter of measurable

N2780/81/82/83 User’s and Service Guide 21Figure 1 Frequency Response Characteristic N2780A/BFigure 2 Derating according to frequency N2780A/BFrequenc

22 N2780/81/82/83 User’s and Service GuideFigure 3 Insertion Impedance N2780A/BFigure 4 DC Accuracy Characteristic N2780A/BFrequency [Hz]Insertion imp

N2780/81/82/83 User’s and Service Guide 23Figure 5 AC Amplitude Accuracy Characteristic N2780A/BFigure 6 Frequency Response Characteristic N2781A/B-5-

24 N2780/81/82/83 User’s and Service GuideFigure 7 Derating according to frequency N2781A/BFigure 8 Insertion Impedance N2781A/BFrequency [Hz]Maximum

N2780/81/82/83 User’s and Service Guide 25Figure 9 DC Accuracy Characteristic N2781A/BFigure 10 AC Amplitude Accuracy Characteristic N2781A/B-50510152

26 N2780/81/82/83 User’s and Service GuideFigure 11 Frequency Response Characteristic N2782A/BFigure 12 Derating according to frequency N2782A/BFreque

N2780/81/82/83 User’s and Service Guide 27Figure 13 Insertion Impedance N2782A/BFigure 14 DC Accuracy Characteristic N2782A/BFrequency [Hz]Insertion i

28 N2780/81/82/83 User’s and Service GuideFigure 15 AC Amplitude Accuracy Characteristic N2782A/BFigure 16 Frequency Response Characteristic N2783A/B-

N2780/81/82/83 User’s and Service Guide 29Figure 17 Derating according to frequency N2783A/BFigure 18 Insertion Impedance N2783A/BFrequency [Hz]Maximu

N2780/81/82/83 User’s and Service Guide 3Contents1User’s Guide 5Inspecting the probe 6Accessories Supplied 7Notes on Safety 8Symbols 8Notes on Use 912

30 N2780/81/82/83 User’s and Service GuideFigure 19 DC Accuracy Characteristic N2783A/BFigure 20 AC Amplitude Accuracy Characteristic N2783A/B-20-15-1

N2780/81/82/83 User’s and Service Guide 31Measurement Procedure Preparations for Measurement 1 Have the N2779A power supply and oscilloscope ready for

32 N2780/81/82/83 User’s and Service Guide3 Connect the output connector of the current probe to the input connector of the oscilloscope. Turn the col

N2780/81/82/83 User’s and Service Guide 33Making the Measurement1 Check that the system is safe and that the preparations described in the preceding s

34 N2780/81/82/83 User’s and Service GuideCAUTION• The maximum continuous input range is based on heat that is internally generated during measurement

N2780/81/82/83 User’s and Service Guide 35CAUTION• When opening the sensor head of the probe, be sure to operate with the opening lever. If an upper c

36 N2780/81/82/83 User’s and Service GuideNOTE• The output of this unit is terminated internally. Use an oscilloscope with an input impedance of at le

N2780/81/82/83 User’s and Service Guide 37NOTE• At high frequencies, common mode noise may affect measurements taken on the high voltage side of circu

38 N2780/81/82/83 User’s and Service Guidemedium_standard.book Page 38 Friday, September 10, 2010 2:45 PM

39Agilent TechnologiesAgilent N2780A/B, N2781A/B, N2782A/B, and N2783A/B Current ProbesUser’s and Service Guide2Service Guidemedium_standard.book Pa

4 N2780/81/82/83 User’s and Service GuideContentsPerformance Verification Testing 41Required Test Equipment 41Amplitude Accuracy Test 42medium_standa

40 N2780/81/82/83 User’s and Service GuideService StrategyTo return the probe to optimum performance requires factory repair. If the probe is under w

N2780/81/82/83 User’s and Service Guide 41Performance Verification TestingRequired Test Equipment Test Coil Construction for the N2780A/BConstruct a 7

42 N2780/81/82/83 User’s and Service GuideTest Coil Construction for the N2782A/B and N2783A/BConstruct a 5- turn coil with a diameter of about 4 inch

N2780/81/82/83 User’s and Service Guide 43test procedure. While the test system is warming up, clean the magnetic contacts on the probe jaw.2 Press t

44 N2780/81/82/83 User’s and Service Guide• Amplitude:• Offset: 0.0 Vdc6 Measure the voltage output of the probe on the DMM and record this value in T

medium_standard.book Page 45 Friday, September 10, 2010 2:45 PM

Agilent Technologies, Inc. 2010Printed in Malaysia August 2010Fifth Edition, August 2010*N2780-97004*N2780-97004www.agilent.comAgilent Technologiesm

5Agilent TechnologiesAgilent N2780A/B, N2781A/B, N2782A/B, and N2783A/B Current ProbesUser’s and Service Guide1User’s Guidemedium_standard.book Page

6 N2780/81/82/83 User’s and Service GuideInspecting the probe• Inspect the shipping container for damage.Keep a damaged shipping container or cushioni

N2780/81/82/83 User’s and Service Guide 7Accessories SuppliedThe following is a list of supplied accessories.Table 1User’s and Service Guide 1Carrying

8 N2780/81/82/83 User’s and Service GuideNotes on SafetyThis device is designed to comply with IEC 61010 Safety Standards, and has been thoroughly tes

N2780/81/82/83 User’s and Service Guide 9Notes on UseWARNINGTo avoid short circuits and potentially life- threatening hazards, follow these precautio