Agilent Technologies U3402A

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1Getting Started

4 U3402A User’s and Service Guide

Original Packaging

Containers and materials identical to those used in the factory pakaging are

available through Agilent Technologies office. If the multimeter is being

returned to 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 multimeter by model number and serial number.

U3402-90001.book Page 4 Friday, July 24, 2009 4:04 PM

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Safety Symbols3
Regulatory Markings4
General Safety Information5
Environmental Conditions7
In this Guide11
Table of Contents13
Getting Started21
Introducing the Agilent U3402A Dual Display Multimeter22
Initial Inspection23
Standard Purchase Items23
Original Packaging24
Connecting Power to the Multimeter25
Stacking the U3402A26
Figure 1-1 Stacking the U3402A26
Adjusting the Handle27
Figure 1-2 Type of Handle Position27
Figure 1-3 Attaching and Detaching the Handle27
Product at a Glance28
Product Dimensions28
Figure 1-4 U3402A Dimensions28
The Front Panel at a Glance29
Figure 1-5 Front Panel29
The Display at a Glance30
Figure 1-6 VFD Full Display with All Segments Illuminated30
Table 1-1 Display Annunciators30
The Keypad a a Glance32
Figure 1-7 Keypad32
Table 1-2 Keypad Functions32
The Terminal at a Glance35
Figure 1-8 Input Terminal35
Table 1-3 Input Terminal for Different Measurement Functions36
The Rear Panel at a Glance37
Figure 1-9 Rear Panel37
Operations and Features39
Making Measurements40
Performing Voltage Measurements41
Figure 2-1 ACV Terminal Connection and Display41
Figure 2-2 DCV Terminal Connection and Display42
Performing Current Measurements43
Figure 2-3 ACI RMS or DCI (Ma) Terminal Connection and Display43
Figure 2-4 ACI RMS or DCI (A) Terminal Connection and Display44
Performing Frequency Measurements45
Figure 2-5 Frequency Terminal Connection and Display45
Performing Resistance Measurements46
Figure 2-6 2-Wire Terminal Connection and Display46
Performing Diode/Continuity Test47
Figure 2-7 4-Wire Terminal Connection and Display47
Figure 2-8 Forward-Biased Diode/Continuity Test Terminal Connection and Display49
Figure 2-9 Reverse-Biased Diode/Continuity Terminal Connection and Display49
Figure 2-10 2-Wire/Continuity Test Terminal Connection and Display51
Selecting a Range52
Table 2-1 Range Scale Value in Slow, Medium, and Fast Reading Rate53
Setting the Reading Rate54
Figure 2-11 Reading Rate Annunciator54
Table 2-2 Reading Rates for Single Function Measurements54
Selecting Secondary Display56
Figure 2-12 Secondary Display56
Table 2-3 Description for Dual Display Combination57
Using the Setup Menu58
Table 2-4 Setup Menu and Communication Parameters58
Changing the Configurable Settings59
Selecting Local Operation Mode60
Operating Math Operations61
Table 2-5 Math Operations for Different Measurement Functions61
Dbm62
Figure 2-13 Typical Dbm Operation Display62
Rel63
Figure 2-14 Typical Rel Operation Display63
Minmax64
Figure 2-15 Typical Max Operation Display64
Figure 2-16 Typical Min Operation Display65
Comp66
Figure 2-17 Typical Comp Operation Display66
Hold67
Figure 2-18 Typical Hold Operation Display67
Combination of Math Operations68
Figure 2-19 Combined Math Operations Sequence69
Table 2-6 Descriptions for Combined Math Operations69
Measurement Tutorial71
Applications for Using Dual Display72
Table 3-1 Typical Combinations and Applications When Using Dual Display72
Dual Display Operation Examples73
Measure DC Voltage and AC Ripple on a Rectification Circuit73
Figure 3-1 Terminal Connection When Measuring DC Voltage and AC Ripple on a Rectification Circuit73
Measure AC and DC Current on a Rectification Circuit74
Figure 3-2 Terminal Connection When Measuring AC and DC Current on a Rectification Circuit74
Measure AC Voltage and Frequency on an AC Circuit75
Measure DC Voltage and DC Current on a Transistor Circuit or Load76
Measure Resistance Using 2-Wire Mode78
Measure Resistance Using 4-Wire Mode79
Measure True RMS AC+DC80
Performance Test81
Calibration Overview82
Agilent Technologies Calibration Services82
Calibration Interval82
Recommended Test Equipment83
Table 4-1 Recommended Test Equipments83
Test Considerations84
Input Connections84
Performance Verification Test Overview85
Performance Verification Test85
DC Voltage Verification Test85
Table 4-2 DC Voltage Verification Test86
DC Current Verification Test87
Table 4-3 DC Current Verification Test87
Resistance Verification Test88
Table 4-4 2-Wire Verification Test88
Diode Verification Test91
Frequency Verification Test91
Table 4-6 Diode Verification Test91
Table 4-7 Frequency Verification Test91
AC Voltage Verification Test92
Table 4-8 AC Volts Verification Test92
AC Current Verification Test93
Table 4-9 AC Current Verification Test93
Disassembly and Repair95
Operating Checklist96
Types of Service Available97
Cleaning98
Repackaging for Shipment98
To Replace the Power Line Fuse99
Table 5-1 Type of Supplied Fuse (According to Country of Destination)99
To Replace a Current Input Fuse100
Electrostatic Discharge (ESD) Precautions100
Mechanical Disassembly101
Replaceable Parts107
Table 5-2 Replaceable Parts107
Rack Mounting108
Specifications and Characteristics109
General Characteristics110
Measurement Category112
Measurement Category Definitions112
Specifications113
DC Voltage113
Table 6-1 DCV Resolution, Full Scale Reading, and Accuracy113
DC Current114
Table 6-2 DCI Resolution, Full Scale Reading, and Accuracy [±(% of Reading + Count)]114
AC Voltage (True RMS, AC Coupling Mode)115
Table 6-3 ACV Resolution, Full Scale Reading, and Accuracy [±(% of Reading + Count)]115
AC Voltage (True RMS, AC+DC Coupling Mode)116
Table 6-4 Acvac+DC Resolution, Full Scale Reading, and Accuracy [± (% of Reading + Count)]116
AC Current (True RMS, AC Coupling Mode)117
Table 6-5 ACI Resolution, Full Scale Reading, Burden Voltage, and Accuracy [± (% of Reading + Count)]117
AC Current (True RMS, AC+DC Coupling Mode)118
Table 6-6 Aciac+DC Resolution, Full Scale Reading, Burden Voltage, and Accuracy [± (% of Reading + Count)]118
Resistance119
Diode Test/Continuity120
Resistance/Continuity (2-Wire)120
Frequency120
Decibel (Db) Calculation121
Supplemental Specifications122
Display Counts122
Measurement Specifications122
To Calculate Total Measurement Error127
Accuracy Specifications128
Transfer Accuracy128

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