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Keysight 34450A Service Manual

Keysight 34450A
80 pages
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Keysight 34450A
5½ Digit Multimeter
Service
Guide

Table of Contents

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Keysight 34450A Specifications

General IconGeneral
TypeDigital Multimeter
Model34450A
ManufacturerKeysight
Display Digits5.5
DisplayLCD
DC Voltage Range100 mV to 1000 V
Max Voltage1000 V
AC Voltage Range100 mV to 750 V
DC Current Range100 μA to 10 A
Max Current10 A
AC Current Range100 μA to 10 A
Resistance Range100 Ω to 100 MΩ
Frequency Range20 Hz to 300 kHz
ContinuityYes
Diode TestYes
InterfaceUSB, GPIB (optional)
Capacitance Range1 nF to 10 mF
DC Current Accuracy0.05% + 5 counts
AC Current Accuracy0.3% + 0.05%
Frequency Accuracy0.01% + 1 count
Resolution100 nV

Summary

Notices and Safety Information

Document Notices

Covers warranty terms, technology licenses, and government rights for software and data.

Safety Notices and Symbols

Explains CAUTION, WARNING notices, and safety symbols for instrument operation.

Regulatory and Environmental Information

Regulatory Markings

Explains compliance marks like CE, CSA, WEEE, and C-tick.

Environmental Conditions

Details operating temperature, humidity, altitude, and pollution degree requirements.

Waste Disposal

Information on WEEE directive and proper disposal of electrical/electronic products.

Protection Limits

Input and Sense Terminal Limits

Defines protection limits for the instrument's input and sense terminals.

IEC Overvoltage Protection

Explains Category II overvoltage protection for mains connections.

Test Lead Information

Test Lead Ratings and Operation

Details specifications and usage of test lead attachments.

Test Lead Maintenance

Provides guidance on inspecting and replacing test leads.

Declaration of Conformity (DoC)

Performance Tests and Calibration

Calibration Overview and Interval

Covers calibration overview, interval, and time requirements.

Test Setup and Considerations

Lists recommended equipment, test conditions, and input connections.

Performance Verification Tests

Introduces different levels of verification tests including self-test and detailed tests.

Calibration Security and Process

Explains security, unsecuring, and the overall calibration procedure.

Instrument Adjustments

Details the process for making instrument adjustments.

Calibration Messaging and Errors

Covers storing messages and handling calibration errors.

Disassembly and Repair

Operating Checklist

Lists pre-service checks for multimeter operability.

Service Options

Describes warranty, extended service contracts, and repair options.

Shipping and Cleaning

Provides instructions for safely shipping and cleaning the instrument.

Fuse Replacement

Guides on replacing the power line fuse and current input fuses.

Device License Verification

Explains how to check installed instrument options and licenses.

Self Test Errors

Lists and explains error codes generated during self-tests.

Electrostatic Discharge (ESD) Precautions

Outlines essential precautions to prevent ESD damage during servicing.

Mechanical Disassembly

Provides detailed steps for disassembling the instrument.

Replaceable Parts

Lists available parts for replacement with part numbers.

Rack Mounting

Describes how to mount the multimeter in a standard 19-inch rack cabinet.

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