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Keithley 2700 Service Manual

Keithley 2700
174 pages
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Contains Servicing Information
Model 2700 Multimeter/
Data Acquisition System
Service Manual

Table of Contents

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Keithley 2700 Specifications

General IconGeneral
TypeDigital Multimeter
Measurement FunctionsDC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
DC Voltage Range100 mV to 1000 V
AC Voltage Range100 mV to 750 V
Frequency Range3 Hz to 500 kHz
Temperature Range-200°C to +1372°C
DisplayVacuum Fluorescent Display
ConnectivityIEEE-488, RS-232
Channels10
Power Supply100V to 240V AC, 45Hz to 66Hz
DC Current Range10 µA to 3 A
AC Current Range10 µA to 3 A
Temperature MeasurementThermocouple, RTD

Summary

Safety Precautions

User Roles and General Safety Advice

Defines user roles and emphasizes general precautions against electric shock.

Performance Verification

Performing Verification Procedures

Details the steps for conducting verification tests for Model 2700 and Model 7700.

Verifying DC Voltage (Model 2700)

Describes the procedure for verifying DC voltage accuracy on the Model 2700.

Verifying AC Voltage (Model 2700)

Details the process for verifying AC voltage accuracy on the Model 2700.

Verifying DC Current (Model 2700)

Explains how to verify DC current accuracy for the Model 2700.

Verifying AC Current (Model 2700)

Outlines the procedure for verifying AC current accuracy on the Model 2700.

Verifying Resistance (Model 2700)

Describes the steps to verify resistance accuracy for the Model 2700.

Verifying Temperature (Model 2700)

Details the procedure for verifying temperature measurement accuracy on the Model 2700.

Verifying Frequency (Model 2700)

Explains how to verify frequency measurement accuracy for the Model 2700.

Model 7700 Verification

Verifying DC Voltage (Model 7700)

Describes the procedure for verifying DC voltage accuracy on the Model 7700.

Verifying AC Voltage (Model 7700)

Details the process for verifying AC voltage accuracy on the Model 7700.

Verifying DC Current (Model 7700)

Explains how to verify DC current accuracy for the Model 7700.

Verifying AC Current (Model 7700)

Outlines the procedure for verifying AC current accuracy on the Model 7700.

Verifying Resistance (Model 7700)

Describes the steps to verify resistance accuracy for the Model 7700.

Verifying Temperature (Model 7700)

Details the procedure for verifying temperature measurement accuracy on the Model 7700.

Verifying RTD Temperature (Model 7700)

Specific procedure for verifying RTD temperature accuracy on Model 7700.

Verifying Frequency (Model 7700)

Explains how to verify frequency measurement accuracy for the Model 7700.

Verifying Ratio and Average (Model 7700)

Describes the procedure for verifying ratio and average measurements on the Model 7700.

Calibration

Calibration Code Management

Explains how to set and manage calibration codes for front panel and remote calibration.

Comprehensive Calibration Procedure

Details the procedure for full calibration of DCV, DCI, ACV, ACI, and ohms functions.

Front Panel Calibration Steps

Outlines the steps for performing calibration via the front panel.

DC Volts Calibration Procedure

Details the procedure for calibrating the DC voltage function.

Resistance Calibration Procedure

Explains the steps for calibrating the resistance function.

DC Current Calibration Procedure

Details the procedure for calibrating the DC current function.

AC Voltage Calibration Procedure

Explains how to calibrate the AC voltage function.

AC Current Calibration Procedure

Details the procedure for calibrating the AC current function.

Remote Calibration Procedure

Outlines the procedure for performing calibration remotely via IEEE-488 or RS-232.

Manufacturing Calibration

Front Panel Manufacturing Calibration

Describes the procedure for performing manufacturing calibration using the front panel.

Remote Manufacturing Calibration

Details the procedure for performing manufacturing calibration remotely.

Model 7700 Calibration

Front Panel Model 7700 Calibration

Describes the procedure for front panel calibration of the Model 7700.

Remote Model 7700 Calibration

Details the procedure for remote calibration of the Model 7700.

Routine Maintenance

Setting Line Voltage and Replacing Line Fuse

Guides on setting line voltage and replacing the main power line fuse.

Replacing Front Terminal AMPS Fuse

Step-by-step guide to replace the front panel AMPS fuse.

Replacing Plug-in Module Amps Fuses

Replacing Model 7700 Amps Fuses

Instructions for replacing fuses in the Model 7700 plug-in module.

Replacing Model 7702 Amps Fuses

Instructions for replacing fuses in the Model 7702 plug-in module.

Troubleshooting

Repair Considerations for Troubleshooting

Discusses important considerations and cautions before performing instrument repairs.

Disassembly

Handling Static Sensitive Devices

Explains precautions for handling static-sensitive CMOS devices to prevent damage.

Case Cover Removal Procedure

Step-by-step instructions for removing the instrument's case cover.

Motherboard Removal Procedure

Details the procedure for removing the motherboard from the chassis.

Card Cage Removal Procedure

Instructions for removing the card cage that holds plug-in modules.

Front Panel Disassembly Procedure

Procedures for removing the display board and pushbutton switch pad.

Power Components Removal

General section for removing power transformer and power module.

Power Transformer Removal

Steps to remove the power transformer.

Power Module Removal

Steps to remove the power module.

Instrument Reassembly Guidelines

Guidelines for reassembling the instrument, ensuring proper seating and connections.

Replaceable Parts

Model 2700 Motherboard Parts List

A detailed list of replaceable components for the Model 2700 motherboard.

Model 2700 Connector Board Parts List

A list of replaceable parts for the Model 2700 connector board.

Model 2700 Miscellaneous Parts List

A list of miscellaneous replaceable parts for the Model 2700.

Model 7700 Parts List

A list of replaceable parts for the Model 7700.

Model 7702 Parts List

A list of replaceable parts for the Model 7702.

Model 7703 Parts List

A list of replaceable parts for the Model 7703.

Specifications

DC Characteristics Overview

Details the DC measurement characteristics, including accuracy and conditions.

Detailed DC Measurement Characteristics

Provides detailed specifications for DC voltage, resistance, and current measurements.

AC Specifications Overview

Details the AC measurement characteristics, including accuracy and conditions.

Accuracy Calculations

Calculating DC Characteristics Accuracy

Explains how to calculate DC accuracy using ppm values and provides an example.

Calculating AC Characteristics Accuracy

Explains how to calculate AC accuracy using percentage values and provides an example.

Calculating dBm Characteristics Accuracy

Explains how to calculate dBm accuracy from voltage and reference impedance.

Calculating dB Characteristics Accuracy

Explains how to calculate dB accuracy from voltage readings and a defined VREF.

Calibration Reference

Model 2700 Calibration Command Summary

Summarizes Model 2700 calibration commands and their descriptions.

Model 7700 Calibration Commands

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