U3401A-ABA AGILENT TECHNOLOGIES, U3401A-ABA Datasheet

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U3401A-ABA

Manufacturer Part Number
U3401A-ABA
Description
English Users And Service Guide 3400
Manufacturer
AGILENT TECHNOLOGIES
Datasheet

Specifications of U3401A-ABA

Rohs Compliant
NA
For Use With
U3400 Series U3401A Dual Display Multimeter
Agilent U3401A
4 1/2 Digit Dual Display
Multimeter
User’s and Service Guide
Agilent Technologies

Related parts for U3401A-ABA

U3401A-ABA Summary of contents

Page 1

... Agilent U3401A 4 1/2 Digit Dual Display Multimeter User’s and Service Guide Agilent Technologies ...

Page 2

... It calls attention to an operating procedure, practice, or the like that, if not correctly per- formed or adhered to, could result in personal injury or death. Do not proceed beyond a WARNING notice until the indicated condi- tions are fully understood and met. U3401A User’s and Service Guide ...

Page 3

... V are directly connected to the low voltage installation (up to 300 VAC) under Category II overvoltage conditions U3401A User’s and Service Guide The following symbol on the instrument and in the documentation indicates precautions that must be taken to maintain safe operation of the instrument. Off (supply) ...

Page 4

... Radio Communications Act of 1992. This product complies with the WEEE Directive (2002/96/EC) marking equipment. The affixed product label indicates that you must not discard this electrical/electronic product in domestic household waste. U3401A User’s and Service Guide ...

Page 5

... General Safety Information U3401A User’s and Service Guide The following general safety precautions must be observed during all phases of operation, service, and repair of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument. Agilent Technologies assumes no liability for the customer’ ...

Page 6

... Remove power and do not use the product until safe operation can be verified by service-trained personnel. If necessary, return the product to Agilent Technologies Sales and Service Office for service and repair to ensure the safety features are maintained. vi U3401A User’s and Service Guide ...

Page 7

... Use the correct terminals, functions, and range for your instruments. • Never measure voltage when current measurement is selected. • Use the instrument with the cables provided. • Repair or service that is not covered in this manual should only be performed by qualified personnels. U3401A User’s and Service Guide vii ...

Page 8

... Altitude Operating up to 2,000 metres (6,562feet) Pollution degree Pollution Degree 2 The Agilent U3401A dual display complies with the following EMC requirements: • IEC 61010-1:2001/EN61010-1:2001 (2nd Edition) • Canada: CAN/CSA-C22.2 No. 61010-1-04 • USA: ANSI/UL 61010-1:2004 • IEC 61326-1:2005/EN61326-1:2006 • ...

Page 9

... Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC U3401A User’s and Service Guide This instruction complies with the WEEE Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard this electrical/electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this instrument is classified as a “ ...

Page 10

... According to EN ISO/IEC 17050-1:2004 Agilent Technologies Microwave Products (M) Sdn Bhd Bayan Lepas Free Industrial Zone 11900 Penang, Malaysia 5½ Digit Dual Display Multimeter (U3402A) 4½ Digit Dual Display Multimeter (U3401A) U3401A, U3402A This declaration covers all options of the above product(s) Limit Group 1 Class CD V/m (80 MHz-1 ...

Page 11

... This ISM device complies with Canadian ICES-001. Cet appareil ISM est confomre à la norme NMB-001 du Canada. Regulatory Information for Australia/New Zealand This ISM device complies with Australian/New Zealand AS/NZS CISPR11:2004 U3401A User’s and Service Guide 100% Dip (0.5 cycle) 100% Dip (1 cycle) 60% Dip (10 cycles) ...

Page 12

... Chapter 1 prepares the U3401A digital multimeter for use and contains a brief description of the digital multimeter front panel, display, keypad, terminal and rear panel. 2 Operations and Features on how to take measurements using the U3401A. It also describes the various multimeter function and features available in the multimeter. 3 Measurement Tutorial Chapter 3 describes the advanced features and applications for effective operation of the multimeter ...

Page 13

... Notices Safety Symbols Regulatory Markings General Safety Information Environmental Conditions In This Guide ... 1 Getting Started Introduction the Agilent U3401A Dual Display Multimeter Initial Inspection Connecting Power to the Instrument Adjusting the Handle Product at a Glance Product Dimensions The Front Panel at a Glance The Display at a Glance ...

Page 14

... Agilent Technologies Calibration Services Calibration Interval Test Considerations Input Connections Performance Verification Tests Overview Performance Verification Tests DC Voltage Verification Test DC Current Verification Test Resistance Verification Test Diode Verification Test Frequency Verification Test AC Voltage Verification Test AC Current Verification Test U3401A User’s and Service Guide ...

Page 15

... AC Current (true RMS, AC+DC Coupling mode) Resistance / Continuity Diode Test/ Continuity Frequency Decibel Calculation Supplemental Specifications Display Counts and Reading Rates Measurement Specifications To Calculate Total Measurement Error Accuracy Specifications Transfer Accuracy One-Year Accuracy Temperature Coefficients U3401A User’s and Service Guide ...

Page 16

... Typical refresh hold operation display 45 Typical percentage (%) operation display 46 Typical Trigger mode display 48 Connection terminal when measuring DC voltage and AC ripple 51 Connection terminal when using DC current and AC ripple 52 Connection terminal when measuring AC Voltage and Frequency 53 Connection terminal when measuring Resistance 54 U3401A User’s and Service Guide ...

Page 17

... Frequency resolution and accuracy [± reading + count)] 91 Table 6-10 Sensitivity for voltage measurement 91 Table 6-11 Sensitivity for current measurement 92 Table 6-12 Range and accuracy (dB) 92 Table 6-13 Full scale display counts 93 Table 6-14 Supplemental measurement specifications 93 U3401A User’s and Service Guide 5 ...

Page 18

... U3401A User’s and Service Guide ...

Page 19

... The Display at a Glance The Keypad at a Glance The Terminal at a Glance The Rear Panel at a Glance This chapter prepares the U3401A digital multimeter for use and contains brief description of the digital multimeter front panel, display, keypad, terminal and rear panel ...

Page 20

... Getting Started Introduction the Agilent U3401A Dual Display Multimeter The key features of the U3401A dual display multimeter are: • 4 1/2- digit dual display measurement • Ten Measurement functions: • AC voltage • DC voltage • AC current • DC current • voltage • current • ...

Page 21

... Standard test lead kit ✔ Printed quick start guide ✔ Product reference CD ✔ Test report ✔ Certificate of calibration Verify that any options ordered are included with the shipment by checking the packing list included with the shipment. U3401A User’s and Service Guide Getting Started 1 3 ...

Page 22

... Agilent Technologies for servicing, attach a tag indicating the type of service required, return address, model number, and serial number. Also mark the container FRAGILE to assure careful handling. In any correspondence, refer to the instrument by model number and serial number. 4 U3401A User’s and Service Guide ...

Page 23

... CAU T ION correct position for the applied line voltage to the power line cord connector. • Do not apply a line voltage that exceeds the specified range of the line cord connector. U3401A User’s and Service Guide on page 70). During the power- on session, press Getting Started 1 “ ...

Page 24

... The U3401A is provided with specially designed anti- slip protective bumpers on the front and rear panel. The multimeters will not slide off when stacked on top of each other able to stack the U3401A multimeters, ensure the attached bumpers are in correct orientation. See Figure 1-1 Stacking the U3401A ...

Page 25

... Figure 1-2 Type of handle position To attach or detach the handle, rotate the handle upright and pull it out from the sides of the instrument. See Figure 1-3 Attaching and detaching the handle U3401A User’s and Service Guide Benchtop position Getting Started Carrying position ...

Page 26

... Getting Started Product at a Glance Product Dimensions Front View Side View Figure 1-4 U3401A dimensions 8 226.0 mm 305.0 mm U3401A User’s and Service Guide 105.0 mm ...

Page 27

... The Front Panel at a Glance Input terminals and current fuse Figure 1-5 Front panel U3401A User’s and Service Guide Primary display Secondary display Measurement Autoranging, function manual range, keypads and comparator operation Getting Started 1 Math Shift Power operation on/off keypads ...

Page 28

... DCAC 10 Table 1- 1. Description Reading rate: Slow. Not applicable for the U3401A. Reading rate: Medium. Not applicable for the U3401A. Reading rate: Fast. Not applicable for the U3401A. Peak measurement. Not applicable for the U3401A. Data hold MinMax math operation: Minimum value shown on the primary display ...

Page 29

... Fahrenheit temperature unit. Not applicable for the U3401A. Duty cycle measurement Voltage unit: mV, V Current unit: μA, mA, A Shift mode Resistance unit: Ω, kΩ, MΩ Secondary display is enabled. Not applicable for the U3401A. Autoranging Direct current Alternating current Compare operation Decibel unit relative Calibration mode External ...

Page 30

... Figure 1-7 Keypad Table 1-2 Keypad functions Key System related operation 12 Description Press to power-on or power-off the U3401A multimeter. Press to select Shift. Press to return the multimeter to front panel operation when remote state. Press to step through the Setup menu. See Menu” on page 34 for more information. ...

Page 31

... Table 1-2 Keypad functions Key Measurement related operation U3401A User’s and Service Guide Description Press to disable the secondary display. + Press to select the DC voltage measurement. Press to select the AC voltage measurement. Press to select the DC current measurement. Press to select the AC current measurement. Press to select the voltage measurement. ...

Page 32

... Press to enable Hold math operation. See more information. Press to select the reference impedance for dBm measurement. + Press to enable the MinMax math operation. Press to select the Relative math operation. Press to select the Percentage operation. + “Hold” on page 43 for U3401A User’s and Service Guide ...

Page 33

... Voltages above 300 VAC may be measured only in circuits that are isolated from mains However, transient overvoltages are also present on circuits that are isolated from mains. The Agilent U3401A is designed to safely withstand occasional transient overvoltages up to 2500 V PEAK. Do not use this multimeter to measure circuits where transient overvoltages could exceed this level. ...

Page 34

... AC RMS COM 10 ADC or AC RMS continuous, and 10 A > RMS for 20 seconds maximum 500 VDC or AC RMS 500 VDC or AC RMS Any terminal to earth 1000 VDC or AC PEAK U3401A User’s and Service Guide V-Hz normal mode, or V-Hz common mode ...

Page 35

... The Rear Panel at a Glance AC line voltage selector AC power AC line fuse connector Figure 1-9 Rear panel U3401A User’s and Service Guide Line voltage fuse selection table Chassis RS232 interface connector ground lug (For calibration use only) Getting Started 1 17 ...

Page 36

... Getting Started 18 U3401A User’s and Service Guide ...

Page 37

... Changing the Configurable Settings Selecting Local Operation Mode Operating Math Functions dBm 38 Rel 39 MinMax 40 Comp 42 Hold 44 Percentage (%) Trigger Mode 47 This chapter contains detailed information on how to take measurements using the U3401A. It also describes the various multimeter function and features available in the multimeter Agilent Technologies 26 19 ...

Page 38

... DC measurements of volts, amperes, or ohms; to achieve accurate measurement. This is due to the thermal voltages generated during the high current measurements that may cause errors when measuring the low-level measurements. 20 U3401A User’s and Service Guide ...

Page 39

... ACV voltage source – Figure 2-1 ACV terminal connection and display U3401A User’s and Service Guide 500.00 mV, 5.00 V, 50.00 V, 500.00 V, 750. coupled true RMS—measure the AC component with up to 400 VDC bias on any range Maximum 3:0 at full scale 1 MΩ±2%parallel with capacitance <100 pF on all ranges 750 V RMS on all ranges ...

Page 40

... DCV voltage source – Figure 2-2 DCV terminal connection and display 22 500.00 mV, 5.00 V, 50.00 V, 500.00 V, 1000.00 V Sigma Delta A-to-D converter 10 MΩ±2% range (typical) 1000 V on all ranges . Figure U3401A User’s and Service Guide ...

Page 41

... Probe the test points in series with the circuit. 5 Power on the measured circuit and read the display. ACI or DCI current source Figure 2-3 ACI RMS or DCI (mA) terminal connection and display U3401A User’s and Service Guide 500.00 mA, 5.00 mA, 50.00 mA, 500.00 mA, 5.00 A, 10.00 A for 500 μ ranges 0.01 to 100 ...

Page 42

... Figure 2-4 ACI RMS or DCI (10A) terminal connection and display 24 10.000 A for RMS continuous 12.000 RMS for maximum 30 seconds to 100 Ω for 500 μ ranges 0.01 Internal 25 A, 440 V fuse for 10A terminal – + U3401A User’s and Service Guide ...

Page 43

... Frequency source Figure 2-5 Frequency terminal connection and display U3401A User’s and Service Guide 500.00 Hz, 5.0000 Hz, 50.000 Hz, 500.000 Hz, 750.00 V — range is based on the voltage level of the signal, not frequency. Reciprocal counting technique. AC coupled input using AC voltage function ...

Page 44

... In autoranging mode, the multimeter automatically selects the appropriate range and the measurement is displayed. Resistance Figure 2-6 Resistance /continuity terminal connection and display 26 500.00 , 5.0000 k , 50.000 k , 500. 5.000 M , 50.000 M , Two-wire ohms, open circuit voltage limited to <5 V 500 V on all ranges . 6. Test current + – U3401A User’s and Service Guide ...

Page 45

... Connect the red and black test leads to the input terminal as shown in Figure Connect the red test lead to the positive terminal (anode) of the diode and the black test lead to the negative terminal (cathode). Refer to Figure 2- U3401A User’s and Service Guide ). 0.83 mA±0.2% constant current source, open-circuit voltage limited to < Ω fixed 500 RMS to toggle the diode and continuity function ...

Page 46

... A diode is considered open if the multimeter displays OL in both forward and reverse bias modes. Forward bias Figure 2-7 Forward-biased diode/continuity test terminal connection and display 28 Figure 2- 8). Assess the diode according to the following Test current + – U3401A User’s and Service Guide ...

Page 47

... Reverse bias Figure 2-8 Reverse-biased diode/continuity terminal connection and display U3401A User’s and Service Guide + – Operations and Features 2 29 ...

Page 48

... Table Selects autoranging and disable manual ranging. Press to toggle in and out of the manual ranging and autoranging. Selects a higher range and disable autoranging. Selects a lower range and disable autoranging. shows the summary of range scale values respectively. U3401A User’s and Service Guide ...

Page 49

... Frequency Resistance Diode test Continuity [1] You are required to select the range manually when a signal is applied to the A terminal. U3401A User’s and Service Guide Range 500.000 mV, 5.000 V, 50.000 V, 500.000 V, 1000.00 V 500.000 mV, 5.000 V, 50.000 V, 500.000 V, 750.000 V 500.000 μA, 5.000 mA, 50.000 mA, 500.000 mA 5.000 A, 10.000 A 500.000 Hz, 5.000 kHz, 500.000 kHz, 500.000 kHz 500.000 Ω ...

Page 50

... The display remains in primary display mode. Repeatedly pressing the present math operation as shown in 32 followed by specified function keys such and to enable the secondary display mode. . cycles through the secondary display choices for , Secondary display Table 2- 2. U3401A User’s and Service Guide , ...

Page 51

... In autoranging mode, the ranges setting of both the primary and secondary display are corresponding to the higher range of two displays. Whereas in manual range, the ranges of secondary display are the same as the primary display. U3401A User’s and Service Guide Default Press secondary ...

Page 52

... OFF 4096 Hz 4096, 2048, 1024 8192 Hz OFF ON or OFF 100, 200, 300, 400, 500, 300 600, 700, 800, 900, 1000. U3401A User’s and Service Guide ...

Page 53

... Use 5 Press 6 Press Setup menu. 7 The configuration settings is saved and main display is displayed. U3401A User’s and Service Guide to access to the Setup Menu. and to select the desired configurable items in the to enter second tier menu. The original parameter select the desired parameter ...

Page 54

... Operations and Features Selecting Local Operation Mode Press 36 to return the operation from remote mode to local mode. U3401A User’s and Service Guide ...

Page 55

... All math operations are automatically turned- off when changing the measurement functions. • Range changing is allowed for all math operations. U3401A User’s and Service Guide presents a summary of the math operations that can be used dBm Rel ✔ ...

Page 56

... Procedure 1 1 Press 2 Use 3 Press 38 2 [1000 x (Reading / reference impedance enter dBm modifier mode. and to select the desired reference impedance. to enable the dBm operation and read the display. U3401A User’s and Service Guide ...

Page 57

... Primary Display = Reading – Rel # When the Rel operation is enabled in autoranging mode, enabling the Comp or Percentage operation will disable the Rel operation. Procedure 1 Press Figure 2-11 Typical Rel operation display U3401A User’s and Service Guide to exit the relative mode. Operations and Features 2 39 ...

Page 58

... MAX or MIN annunciator. Accumulated statistics are: • MAX—maximum reading since MinMax was enabled • MIN—minimum reading since MinMax was enabled • MINMAX—actual readings 40 Elapsed time Elapsed time U3401A User’s and Service Guide ...

Page 59

... Procedure 1 Press 2 Press MinMax operation will display MINMAX > MAX > MIN > MINMAX in sequence when this key is press continuously. 3 Press U3401A User’s and Service Guide to enable MinMax operation. continuously until the desired operation appear. The to disable the MinMax operation. Operations and Features 2 ...

Page 60

... LO when the reading is outside the low limit. • When the beeper is ON (see beeper beeps three tones on the transition from PASS LO. When transitioning from PASS it will only beep once. • Press 42 “Using the Setup Menu” to enable Comp operation. U3401A User’s and Service Guide on page 34), the ...

Page 61

... Press The lower limit is shown on primary display while the LO annunciator is shown on secondary display. 5 Use 6 Press 7 Press U3401A User’s and Service Guide to enter the upper limit setup mode. The upper limit , , , and to modify the upper limit. to store the specified HI limit value. ...

Page 62

... Procedure 1 Press 2 Use 3 Press the state to ON. 4 Press 44 to hold the reading on the display. to access to the Setup menu. and to select the rHold. to enter the second tier menu. Use to confirm. and to set U3401A User’s and Service Guide ...

Page 63

... For resistance and diode measurements, the held value will not be updated of the reading open state. U3401A User’s and Service Guide twice quit the Setup menu. to select refresh hold mode. The present value will be held Operations and Features ...

Page 64

... When enabled, the actual readings are shown in primary display and the percentage’s result is shown in secondary display. • The secondary display shows OL when readings exceed the maximum display of 999.99%. • When autoranging is enabled, this operation will be used to lock the current range. 46 U3401A User’s and Service Guide ...

Page 65

... The amount of trigger delay varies depending on different function. When external trigger is enabled, the multimeter determines the range for the primary display based on the input at that time. U3401A User’s and Service Guide to enter the upper limit setup mode. The upper limit , , , and to modify the upper limit ...

Page 66

... The to get a new value. After a measuring, then the result will to get a new value again select autoranging or manual range as to disable external trigger operation mode. may disable external trigger also. U3401A User’s and Service Guide ...

Page 67

... U3401A 4 ½ Digit Dual Display Multimeter User’s and Service Guide 3 Measurement Tutorial Applications for Using Dual Display Dual Display Operation Examples Measure DC Voltage and AC Ripple on a Rectification Circuit Measure AC and DC Current on a Rectification Circuit Measuring AC Voltage and Frequency Circuit Measuring Resistance ...

Page 68

... Adjusting AC motor control. • Measuring AC ripple and DC current of power supply. • Measuring current dissipation for power supply analysis. • Setting dB reference impedance and show dBm. • Indicating DC voltage and dBm. • Indicating AC voltage and dBm. U3401A User’s and Service Guide ...

Page 69

... Press 3 Press 4 Press for secondary display. • Press • Press current range. U3401A User’s and Service Guide Figure 3- to select DC voltage measurement in primary display. to select AC voltage measurement for secondary display. . Use and to select autoranging or manual range to disable the secondary display. ...

Page 70

... Figure 3-2 Connection terminal when using DC current and AC ripple 2 Press 3 Press display. 4 Press secondary display. Press Figure select AC current measurement for primary display. to enable the DC current measurement for secondary , or to select autoranging or manual range for to disable the secondary display. U3401A User’s and Service Guide ...

Page 71

... Figure 3-3 Connection terminal when measuring AC Voltage and Frequency 2 Press 3 Press 4 Press secondary display. Press U3401A User’s and Service Guide Figure select AC voltage measurement for primary display. to select frequency measurement for secondary display select autoranging or manual range for to disable the secondary display. ...

Page 72

... Connect a resistor under test to shown in + Resistance – Figure 3-4 Connection terminal when measuring Resistance 2 Press 3 Press for primary display. 54 Figure select resistance measurement. . Use and to select autoranging or manual range and COM input and LO input terminals as U3401A User’s and Service Guide ...

Page 73

... DC and AC signals alternatively, calculate and display the AC+DC RMS value using the quation below: AC+DC (RMS) = When AC+DC voltage measurement is selected, the DCV input impedance is paralleled with the AC coupled 1.1 MΩ AC divider. U3401A User’s and Service Guide , and or and 2 2 ...

Page 74

... Measurement Tutorial 56 U3401A User’s and Service Guide ...

Page 75

... Use only completely electrically insulated test lead sets with connectors that prevent contact with test voltages. U3401A 4 ½ Digit Dual Display Multimeter User’s and Service Guide 4 Performance Test ...

Page 76

... instrument. Agilent Technologies Calibration Services When your instrument is due for calibration, contact your local Agilent Service Center for a low- cost recalibration. The U3401A is supported on automated calibration systems, which allow Agilent to provide this service at competitive prices. Calibration Interval A one- year interval is adequate for most applications. Accuracy specifications are warranted only if adjustment is made at regular calibration intervals ...

Page 77

... Application Zero calibration DC voltage DC current Resistance AC voltage AC current Frequency Diode U3401A User’s and Service Guide Recommended Equipment Shorting plug—Dual banana plug with copper wire short between the two terminals Fluke 5520A Fluke 5520A Fluke 5520A Fluke 5520A Fluke 5520A ...

Page 78

... Shielded, twisted- pair, Teflon interconnect cables of minimum length are recommended between the calibrator and the multimeter. Cable shields should be earth ground referenced. This configuration is recommended for optimal noises and settling time performance during calibration. 60 U3401A User’s and Service Guide ...

Page 79

... Make a measurement and observe the result. Compare measurement results to the appropriate test limits shown in the certain to allow for appropriate source settling when using the Fluke 5520A). U3401A User’s and Service Guide Chapter 6 read“Test Considerations”on page 60 before doing the performance ...

Page 80

... V 0.0 V 1000 V 450.00 mV 500 mV 4.5000 45.000 450.00 V 500 V 900.0 V 1000 V Table 4- 3. Error from nominal one year ±40 μV ±0.4 mV ±4 mV ±40 mV ±400 mV ±130 μV ±1.3 mV ±13 mV ±130 mV ±500 mV Table 4- 3. Table 4- 3. (Be certain to U3401A User’s and Service Guide ...

Page 81

... Table 4-3 DC current verification test Function DC current Connect calibrator to multimeter’s A and Lo terminals before applying 10 A. CAU T ION U3401A User’s and Service Guide Input Range 0.00 μA 500 μA 0.0000 0.000 0.00 mA 500 mA 450.00 μA 500 μA 4.5000 45.000 450.00 mA 500 mA 0 ...

Page 82

... Provide the 4. (Be certain to allow for Error from nominal one year [1] ±50 mΩ [1] ±0.3 Ω ±3 Ω ±30 Ω ±300 Ω ±3 kΩ [1] ±500 mΩ ±4.8 Ω [1] ±48 Ω ±480 Ω ±4.8 kΩ ±93 kΩ U3401A User’s and Service Guide ...

Page 83

... Select each range in the order shown in voltage and frequency indicated. Compare measurement results to the appropriate test limits shown in appropriate source settling). Table 4-6 Frequency verification test Function Frequency U3401A User’s and Service Guide Table 4- 5. Voltage Range 1.0000 V 2.3 V 2.0000 V 2 ...

Page 84

... V 1 kHz 675 kHz Table 4- 7. Provide the 7. (Be certain to allow for Range Error from nomial one year ±650 μV 500 mV 500 mV ±2. ±3 ±17 ± ±172 mV 500 V ±400 mV 500 V ±2.4 V 750 V ±1.8 V 750 V ±4.8 V U3401A User’s and Service Guide ...

Page 85

... Select each range in the order shown in current and frequency indicated. Compare measurement results to the appropriate test limits shown in appropriate source settling). Table 4-8 AC current verification test Function AC current U3401A User’s and Service Guide Table 4- Current Input frequency 50.00 μA 1 kHz 450.00 μA 1 kHz 0 ...

Page 86

... Performance Test 68 U3401A User’s and Service Guide ...

Page 87

... U3401A 4 ½ Digit Dual Display Multimeter User’s and Service Guide 5 Disassembly and Repair Operating Checklist Types of Service Available Repackaging for Shipment Cleaning 72 To Replace the Power Line Fuse To Replace a Current Input Fuse Electrostatic Discharge (ESD) Precautions Mechanical Disassembly Replaceable Parts Rack Mounting This chapter will help you troubleshoot a faulty multimeter ...

Page 88

... Verify that the power cord is connected to the multimeter and to AC line power. ✔ Verify the front panel power switch is depressed. See page 73 Is the mutimeter’s current input inoperative? ✔ Verify the current input fuse. 70 U3401A User’s and Service Guide ...

Page 89

... Or contact your Agilent Technologies representative. Before shipping your instrument, ask the Agilent Technologies Service Center to provide shipping instructions, including what components to ship. Agilent recommends that you retain the original shipping carton for use in such shipments. U3401A User’s and Service Guide Disassembly and Repair 5 71 ...

Page 90

... Agilent suggests that you always insure shipments. Cleaning Clean the outside of the multimeter with a soft, lint- free, slightly dampened cloth. Do not use detergent. Disassembly is not required or recommended for cleaning. 72 U3401A User’s and Service Guide ...

Page 91

... Rotate the line voltage selector and reinstall it back, so that the correct voltage appears in the fuse holder window. U3401A User’s and Service Guide 1. If you determine that the fuse is faulty, replace it with one ...

Page 92

... Keep replacement parts in original static- free packaging. • Remove all plastics, foam, vinyl, paper, and other static- generating materials from the immediate work area. • Use only anti- static solder suckers. 74 79) and requires partial disasembly of the multimeter. The fuse page 16). U3401A User’s and Service Guide ...

Page 93

... General Disassembly 1 Remove power and all cables from the instrument. 2 Remove the carrying handle by rotating the handle upright and pulling out from the sides of the instrument. U3401A User’s and Service Guide Disassembly and Repair 5 75 ...

Page 94

... Disassembly and Repair 3 Remove the instrument bumpers. Pull from a corner and stretch the bumpers off the instrument. 4 Remove the rear bezel. Loosen the two captive screws in the rear bezel and remove the rear bezel. 76 U3401A User’s and Service Guide ...

Page 95

... Front Panel Removal 1 Remove on/off switch push rod. Gently move the power switch push rod toward the front of the instrument to disengage it from the switch. Be careful not to twist or bend the push rod. U3401A User’s and Service Guide Disassembly and Repair 5 77 ...

Page 96

... Disassembly and Repair 2 Remove the screw holding the front panel. 3 Disconnect the two ribbon cable connectors from the front panel. 78 U3401A User’s and Service Guide ...

Page 97

... Disconnect the individual front panel wires shown below. 5 There is now enough play to allow the side of the front panel to be pried from the chassis and removed as an assembly. U3401A User’s and Service Guide Disassembly and Repair 25 A current fuse 5 79 ...

Page 98

... Front Panel Disassembly 1 Remove the keyboard and display assembly. Remove the two screws holding the circuit board. Lift the keyboard and display assembly from the plastic housing. a The rubber keypad can now be pulled from the plastic housing. 80 U3401A User’s and Service Guide ...

Page 99

... A02-15-25453-1 A02-1-25370-1C A02-15-25200-1 U3401-40001 U3606-45001 2110-1432 2110-1431 A02-62-25592-3U A02-62-25648-1U A02-62-25604-1 34405-40001 U3401A User’s and Service Guide Disassembly and Repair Description Keypad Front panel assembly Pushrod Cover Rear bezel Rubber bumper kit (front and rear) Carrying handle 0.63 A, 500 V fuse (mA input 440 V Fast acting fuse (A input) 0 ...

Page 100

... To rack mount a single instrument, order adapter kit 5063- 9240. To rack mount two instruments side- by- side, order lock- in kit 5061- 9694 and flange kit 5063- 9212. 82 page 75) and the front and rear bumpers (see U3401A User’s and Service Guide ...

Page 101

... AC Current (true RMS, AC+DC Coupling mode) Resistance / Continuity Diode Test/ Continuity Frequency 91 Sensitivity for Voltage Measurement Sensitivity for Current Measurement Decibel Calculation Supplemental Specifications Display Counts and Reading Rates Measurement Specifications To Calculate Total Measurement Error Accuracy Specifications This chapter specifies the characteristics and specifications of the U3401A ...

Page 102

... Operating temperature from 0 °C to +50°C • Relative humidity up to 80% at 28°C RH (non-condensing) • Altitude up to 2000 meters • Pollution degree 2 • For indoor use only STORAGE COMPLIANCE • –20°C to 60°C • Relative humidity 90% RH (non-condensing) 84 U3401A User’s and Service Guide ...

Page 103

... WEIGHT 3.44 Kg (with bumpers) WARRANTY • One year for U3401A • Three months for standard shipped accessories CALIBRATION CYCLE One Year WARM UP TIME At least 30 minutes U3401A User’s and Service Guide Specifications and Characteristics 6 85 ...

Page 104

... Specifications and Characteristics Measurement Category The U3401A is intended to be used for measurement under Measurement Category II, 300 V for altitude up to 2000 m. Measurement Category Definitions Measurement CAT I Measurement CAT II Measurement CAT III Measurement CAT IV 86 Measurements performed on circuits that are not directly connected to MAINS. ...

Page 105

... Range 500 μ 500 [1] Typical at full scale reading and voltage across the input terminals. [ range, >10-20 Adc is readable for 20 seconds maximum with audio warning. U3401A User’s and Service Guide Resolution Maximum reading 10 μV 510.00 100 μV 5.1000 1 mV 51.000 10 mV 510 ...

Page 106

... Not specified 0. [1] Not specified 0. Maximum reading Accuracy (One year; 23°C ± 5° kHz 510.00 0. 5.1000 0. 51.000 0. 510.00 0. [1] [4] 1000 120 [3] [ [4] [3] Not specified [2] 10 kHz to 30 kHz 30 kHz to 100 kHz 130 [3] [ [3] Not specified U3401A User’s and Service Guide ...

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... Input Current < RMS. [4] Input Current >35 μA RMS. [5] Accuracy specified at input >5% of range and >1 A for 10 A range except other specified. U3401A User’s and Service Guide Accuracy (One year; 23°C ± 5° kHz 2 kHz to 5 kHz 5 kHz to 20 kHz 1. 0. ...

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... V/100 Ω [ <0.6 V/100 Ω <0.08 V/1 Ω <0.8 V/1 Ω <0.3 V/0.01 Ω Not Specified <0.6 V/0.01 Ω Test current Accuracy (One year; 23°C ± 5°C) [2] 0 [2] 0. μA 0. 4.5 μA 0. 450 U3401A User’s and Service Guide [1] ...

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... Hz 5 kHz 50 kHz 500 kHz Sensitivity for Voltage Measurement Table 6-10 Sensitivity for voltage measurement Range 500 500 V 750 V U3401A User’s and Service Guide Resolution Maximum reading 100 μV 2.3000 V Measurement Resolution range 500 Hz 0.01 Hz 500 kHz 0 kHz to 50 kHz ...

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... Not Specified 56.20 to 59.72 Accuracy(One year; 23°C ± 5°C) (dB kHz 10 kHz to 100 kHz 0.3 0.3 0.2 0.2 0.2 0.2 [5] 0.2 0.2 0.5 [4] Not specified 0.2 U3401A User’s and Service Guide 0.7 0.5 0.5 [5] ...

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... Table 6-13 Full scale display counts Display Count Measurement Specifications Table 6-14 Supplemental measurement specifications Measurement DC Voltage DC current U3401A User’s and Service Guide Specifications and Characteristics 50000 Specification Measurement method Sigma Delta A-to-D converter Input resistance 10 MΩ ± range (typical) ...

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... Will select higher range if peak input overload is Overload ranging detected during autoranging. Overload is reported in manual ranging. Input protection 1000 V RMS on all ranges Approximate 1.5 second when the displayed Response time reading reaches 99.9% AC value of the tested input signal at the same range. U3401A User’s and Service Guide ...

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... Measurement AC current (true RMS, AC coupling mode) AC current (true RMS, AC+DC coupling mode) Resistance U3401A User’s and Service Guide Specifications and Characteristics Specification DC coupled to the fuse and current shunt, AC Measurement method coupled true rms measurement (measures the AC component only) Crest factor Maximum 3:0 at full scale 0.01 Ω ...

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... Common mode reject ratio (CMRR) for 1 kΩ 50/60 Hz ± 0. >90 dB unbalanced LO lead Normal mode rejection 50/60 Hz ± 0.1% : >50 dB ratio (NMRR) Approximately 1 second when the displayed Response time reading reaches 99.9% of frequenct value. U3401A User’s and Service Guide ...

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... For calibration use only. When V ac+ AC-couples 1.1 MΩ divider. U3401A User’s and Service Guide 600 Ω reference impedance 0 dBm Resolution 0.01 dB for all ranges 2 Ω 110 Ω, 124 Ω, 125Ω, 135 Ω, 150 Ω, 250 Ω, 300 Ω, ...

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... If you are operating the multimeter outside the temperature range specified, apply an additional temperature coefficient error. • For AC voltage and AC current measurements, you may need to apply an additional low frequency error or crest factor error. 98 U3401A User’s and Service Guide ...

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... Temperature Coefficient = add ± 0.15 x [the applicable accuracy/°C] U3401A User’s and Service Guide Specifications and Characteristics ) ±5°C temperature range. These specifications include cal 6 ) ± ...

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... Specifications and Characteristics 100 U3401A User’s and Service Guide ...

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... Or visit Agilent worlwide Web at: www.agilent.com/find/assist Product specifications and descriptions in this document are subject to change without notice. Always refer to the Agilent Web site for the latest revision. © Agilent Technologies, Inc. 2009 Printed in Malaysia First Edition, May 29, 2009 U3401-90001 Agilent Technologies ...

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