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Agilent Technologies N2780A, User'S And Service Manual

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Agilent Technologies N2780A User'S And Service Manual Download Page 42

42

N2780/81/82/83 User’s and Service Guide

Test Coil Construction for the N2782A/B and N2783A/B

Construct a 5- turn coil with a diameter of about 4 inches 
(10 cm) using transformer wire.

Amplitude Accuracy Test

The following procedure measures the accuracy of the 
current probe.

1

Connect the equipment as shown below.  Allow all 
instruments 30 minutes for warm up before starting the 

5 turns

medium_standard.book  Page 42  Friday, September 10, 2010  2:45 PM

Summary of Contents for N2780A

Page 1: ...Agilent Technologies Agilent N2780A B N2781A B N2782A B and N2783A B Current Probes User s and Service Guide medium_standard book Page 1 Friday September 10 2010 2 45 PM...

Page 2: ...nflict with these terms the warranty terms in the separate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be...

Page 3: ...he N2782A B and N2783A B 16 Specifications and Characteristics 18 Specifications Warranted 18 Characteristics Non warranted 19 General Characteristics 20 Environmental Specifications 20 Measurement Pr...

Page 4: ...N2780 81 82 83 User s and Service Guide Contents Performance Verification Testing 41 Required Test Equipment 41 Amplitude Accuracy Test 42 medium_standard book Page 4 Friday September 10 2010 2 45 PM...

Page 5: ...5 Agilent Technologies Agilent N2780A B N2781A B N2782A B and N2783A B Current Probes User s and Service Guide 1 User s Guide medium_standard book Page 5 Friday September 10 2010 2 45 PM...

Page 6: ...amaged notify your Agilent Technologies Sales Office Inspect the probe If there is mechanical damage or defect or if the probe does not operate properly or pass performance tests notify your Agilent T...

Page 7: ...83 User s and Service Guide 7 Accessories Supplied The following is a list of supplied accessories Table 1 User s and Service Guide 1 Carrying Case 1 medium_standard book Page 7 Friday September 10 2...

Page 8: ...or accidents or injuries not resulting directly from device defects Symbols The following table shows the different symbols that can appear on the probe and in the manual and their meaning Instruction...

Page 9: ...ng While clamping and measuring do not touch the clamp in front of the barrier or the conductor being measured Be careful to avoid damaging the insulation surface while taking measurements Make sure t...

Page 10: ...asurement category working voltage and pollution degree requirements of the circuit being tested 2 If basic insulation requirements cannot be met between the terminal to which this device is connected...

Page 11: ...y environment The sensor head is a precision assembly including a molded component a ferrite core and a Hall effect element It may be damaged if subjected to sudden changes in ambient temperature or m...

Page 12: ...rature to rise leading to damage to the sensor For example when one side of a go and return conductor is clamped and the other side is also placed near the sensor head as shown in the drawings below e...

Page 13: ...requires cleaning disconnect it from the oscilloscope and clean it with a soft cloth dampened with a mild soap and water solution Make sure the probe is completely dry before reconnecting it to the o...

Page 14: ...nductor being measured and carries out the actual current measurement It is a precision assembly including a molded component a ferrite core and a Hall effect element It may be damaged if subjected to...

Page 15: ...nning a measurement after demagnetizing always carry out a zero adjustment 8 Output connector Connect to the BNC input connector of the oscilloscope 9 Power plug Connect this to the Agilent N2779A Pow...

Page 16: ...e actual current measurement It is a precision assembly including a molded component a ferrite core and a Hall effect element It maybe damaged if subjected to sudden changes in ambient temperature or...

Page 17: ...stment dial 6 BNC output connector Connect to the BNC input connector of the oscilloscope 7 Power plug Connect this to the N2779A power supply receptacle to supply power to the sensor terminator 8 Bar...

Page 18: ...fications Warranted N2780A B N2781A B N2782A B N2783A B Amplitude accuracy DC or 45 to 66 Hz up to maximum continous current 1 0 of reading 500 mA at 23 oC 3 oC 1 0 of reading 100 mA at 23 oC 3 o 1 0...

Page 19: ...0 MHz band measuring instrument Equivalent to 25 mA rms or less Equivalent to 25 mA rms or less Equivalent to 2 5 mA rms or less Equivalent to 2 5 mA rms or less Input impedance Typical characteristic...

Page 20: ...ture and humidity range 0 o C to 40 o C 32 o F to 104 o F 80 rh or less no condensation Storage temperature and humidity range 10 oC to 50 oC 14 oF to 122 oF 80 rh or less no condensation Bearable sto...

Page 21: ...Frequency Response Characteristic N2780A B Figure 2 Derating according to frequency N2780A B Frequency Hz Amplitude 0dB 1V Frequency Hz Maximum input current Arms Continuous Maximum Input medium_stan...

Page 22: ...tion Impedance N2780A B Figure 4 DC Accuracy Characteristic N2780A B Frequency Hz Insertion impedance 5 4 3 2 1 0 1 2 3 4 5 0 1 1 10 100 1000 DC Current A Deviation upper limit lower limit N2780A medi...

Page 23: ...curacy Characteristic N2780A B Figure 6 Frequency Response Characteristic N2781A B 5 4 3 2 1 0 1 2 3 4 5 0 1 1 10 100 1000 AC Current Deviation upper limit lower limit N2780A Frequency Hz Amplitude 0d...

Page 24: ...gure 7 Derating according to frequency N2781A B Figure 8 Insertion Impedance N2781A B Frequency Hz Maximum input current Arms Continuous Maximum Input Frequency Hz Insertion impedance medium_standard...

Page 25: ...re 10 AC Amplitude Accuracy Characteristic N2781A B 5 0 5 10 15 20 25 0 1 1 10 100 1000 DC Current A Deviation upper limit lower limit N2781A 5 0 5 10 15 20 25 0 1 1 10 100 1000 AC Current Deviation u...

Page 26: ...Frequency Response Characteristic N2782A B Figure 12 Derating according to frequency N2782A B Frequency Hz Amplitude 0dB 1V Frequency Hz Maximum input current Arms Continuous Maximum Input medium_sta...

Page 27: ...ion Impedance N2782A B Figure 14 DC Accuracy Characteristic N2782A B Frequency Hz Insertion impedance 5 0 5 10 15 20 25 0 001 0 01 0 1 1 10 100 DC Current A Deviation upper limit lower limit N2782A me...

Page 28: ...uracy Characteristic N2782A B Figure 16 Frequency Response Characteristic N2783A B 5 0 5 10 15 20 25 0 001 0 01 0 1 1 10 100 AC Current Deviation upper limit lower limit N2782A Frequency Hz Amplitude...

Page 29: ...ure 17 Derating according to frequency N2783A B Figure 18 Insertion Impedance N2783A B Frequency Hz Maximum input current Arms Continuous Maximum Input Frequency Hz Insertion impedance medium_standard...

Page 30: ...C Amplitude Accuracy Characteristic N2783A B 20 15 10 5 0 5 10 15 20 0 001 0 01 0 1 1 10 100 DC Current A Deviation upper limit lower limit N2783A 6 3 0 3 6 9 12 0 001 0 01 0 1 1 10 100 AC Current Dev...

Page 31: ...trace to the zero position 2 Set the input coupling of the oscilloscope to DC CAUTION Before turning on the power make sure that the voltage of the power supply being used matches the supply voltage i...

Page 32: ...t is not possible in step 6 turn the coarse adjustment trimmer to bring the trace within the range of adjustment by the zero adjustment dial CAUTION When disconnecting the output connector be sure to...

Page 33: ...n the clamp so that the conductor is in the center of the sensor aperture 4 Press the opening lever on the sensor head until the UNLOCK indication disappears Also check that the opening lever is firml...

Page 34: ...s not exceed the rated continuous maximum continuous input for an extended period of time may result in activation of the safety circuit to prevent damage resulting from heating of the sensor At high...

Page 35: ...When opening the sensor head of the probe be sure to operate with the opening lever If an upper core is forced to open when the sensor head is locked the open close mechanism can be damaged medium_sta...

Page 36: ...ndicate a malfunction Oscillation can be stopped and operation restored to normal by opening and closing the sensor head Depending on the measured current frequency some sound maybe produced by resona...

Page 37: ...s taken on the high voltage side of circuits If this occurs reduce the frequency range of the waveform measuring instrument or clamp onto the low voltage side of the circuit as appropriate High Power...

Page 38: ...38 N2780 81 82 83 User s and Service Guide medium_standard book Page 38 Friday September 10 2010 2 45 PM...

Page 39: ...39 Agilent Technologies Agilent N2780A B N2781A B N2782A B and N2783A B Current Probes User s and Service Guide 2 Service Guide medium_standard book Page 39 Friday September 10 2010 2 45 PM...

Page 40: ...the current probe Name and address of the owner Current probe model number Description of service required or failure indications 2 Retain all accessories 3 Return the current probe in its original s...

Page 41: ...er Supply No substitute Agilent N2779A Digital Multimeter DMM AC DC voltage and current measurement accuracy better than 0 1 of reading at 10 mA Input resistance in AC DC voltage mode 1 M Agilent 3440...

Page 42: ...a diameter of about 4 inches 10 cm using transformer wire Amplitude Accuracy Test The following procedure measures the accuracy of the current probe 1 Connect the equipment as shown below Allow all i...

Page 43: ...tor 3 Configure the DMM to measure AC Volts 4 Clamp the probe around the coil and ensure that the probe is as perpendicular as possible to the coils of wire 5 Set up the signal generator as follows Wa...

Page 44: ...the Calculated Amperes column for the probe you are measuring 8 Compare this value to the Passing Range values to determine if the probe passes the test Table 2 N2780A B N2781A B N2782A B N2783A B 6 5...

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

Page 46: ...nt Technologies Inc 2010 Printed in Malaysia August 2010 Fifth Edition August 2010 N2780 97004 N2780 97004 www agilent com Agilent Technologies medium_standard book Page 46 Friday September 10 2010 2...

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