Agilent Technologies U3402A User Manual

1Getting Started
4 U3402A User’s and Service Guide
Connecting power to the multimeter
Connect the power cord and press the power switch to turn on the multimeter.
The front panel display illuminates while the multimeter performs its
power- on self- test. (If the multimeter does not power- on, refer to the
“Operating Checklist” on page 76). During the power- on session, press
to hold the full display. Press any key to resume the power- on self- test.
The multimeter powers up in the DC voltage function with autoranging
enabled. If self- test is successful, the multimeter goes to normal operation.
If the self- test fails, either a full annunciator or a blank display is displayed
without entering the normal operation. In the unlikely event that the self- test
repeatedly fails, contact your nearest Agilent Sales and Service Office.
NOTE
The multimeter will operate at any line voltage between 90 VAC and 264 VAC when the line
voltage selector is set properly with frequency range 50 Hz or 60 Hz.
CAUTION
• Before turning on the multimeter, make sure the line voltage selector is set to the
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.

Agilent Technologies U3402A Specifications

General

Model	U3402A
Manufacturer	Agilent Technologies
Category	Multimeter
Type	Digital Multimeter
Digits	5.5
Display Type	LCD
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Continuity Test	Yes
Diode Test	Yes
Data Logging	Yes
Interface	USB, GPIB
DC Current Range	100 uA to 10 A
AC Current Range	100 uA to 10 A
Resistance Range	100 Ω to 100 MΩ
Capacitance Range	1 nF to 10 µF
Frequency Range	10 Hz to 300 kHz
Temperature Range	-200 to 1372 °C

Summary

Getting Started Tutorial

Introduction to the Agilent U3402A Multimeter

Overview of the Agilent U3402A dual display multimeter's key features and functions.

Initial Setup and Handling

Instructions for checking contents, connecting power, stacking, and handling the multimeter.

Product Overview

Detailed look at the multimeter's physical layout including dimensions, front, display, keypad, terminals, and rear panel.

Making Measurements

Step-by-step guides for performing various measurements like voltage, current, resistance, frequency, and diode tests.

Range and Reading Rate Selection

How to select measurement ranges and adjust reading rates for optimal performance.

Operations and Features

Math Operations

Explanation of available math operations (dBm, Rel, MinMax, Comp, Hold) and their application.

Combining Math Operations

How to use multiple math operations simultaneously for complex measurements.

Secondary Display Usage

Guide on enabling and using the secondary display for simultaneous measurements.

Setup Menu and Configuration

Instructions for accessing and configuring instrument settings via the setup menu.

Application Tutorial

Dual Display Applications

Examples of typical combinations and applications for the dual display feature.

Practical Measurement Examples

Step-by-step tutorials for common measurement scenarios using the multimeter.

Performance Test Procedures

Calibration and Test Setup

Information on calibration overview, services, intervals, test equipment, and considerations.

Performance Verification Tests

Detailed procedures for verifying instrument accuracy across various measurement functions.

Disassembly and Repair Guide

Pre-Service Checklist and Handling

Checklist before returning for service, handling precautions, and cleaning instructions.

Component Replacement Procedures

Step-by-step instructions for replacing fuses and other components.

Instrument Disassembly Steps

Detailed guide on how to disassemble the multimeter for internal access.

Ordering Replacement Parts

Information on how to order replacement parts using Agilent part numbers.

Technical Specifications

DC Measurement Specifications

Detailed specifications for DC voltage and current measurements.

AC Measurement Specifications

Detailed specifications for AC voltage, current, and frequency measurements.

Decibel Calculation

Explanation and specifications for dBm measurements and calculations.

Supplemental Specifications

Information on display update rates and other measurement-specific parameters.

Reading Rates Summary

Summary of reading rates for single and dual display modes.