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Tektronix TDS2022C User Manual

Tektronix TDS2022C
130 pages
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TDS2000C Series
Digital Storage Oscilloscopes
ZZZ
Service Manual
*P077044600*
077-0446-00

Table of Contents

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Tektronix TDS2022C Specifications

General IconGeneral
Bandwidth200 MHz
Sample Rate2 GS/s
Channels2
Record Length2.5 kpoints
Timebase Range5 ns/div to 50 s/div
Math FunctionsAdd, Subtract, Multiply, Divide, FFT
Input CouplingAC, DC, GND
Vertical Resolution8 bits
Trigger ModesAuto, Normal, Single
Memory Depth2.5 kpoints
Display5.7-inch color LCD
Input Impedance1 MΩ
Trigger TypesEdge, Pulse, Video
Display Resolution320 x 240 pixels
ConnectivityUSB
Automatic MeasurementsFrequency, Period, Rise Time, Fall Time
Power Supply100-240 VAC
Time Base5 ns to 50 s

Summary

General Safety Summary

Safety Precautions for Fire and Personal Injury

Essential safety measures to prevent fire hazards and personal injury during operation and servicing.

Manual Terminology Explained

Defines key terms and warnings used throughout the service manual.

Product Symbols and Safety Terms

Explains symbols and terms found on the product for hazard identification.

Service Safety Summary

Service Safety: Do Not Service Alone

Instruction to ensure another qualified person is present during service procedures.

Service Safety: Disconnect Power

Procedure for safely disconnecting power before servicing to avoid electric shock.

Service Safety: Caution with Live Circuits

Warning about dangerous voltages and currents when servicing with power applied.

Preface

Manual Conventions and Usage

Explains conventions used in the manual for clarity and consistency.

Related Documentation and Resources

Lists other manuals and resources for installation, operation, and programming.

Technical Specifications

Signal Acquisition System Specifications

Details on input channels, impedance, voltage limits, and digitized bits for signal capture.

Signal Acquisition Details

Further specifications on sensitivity, gain, probe scaling, acquisition modes, and measurements.

Signal Acquisition Measurement Accuracy and Bandwidth

Accuracy specifications for DC voltage, delta volts, and analog bandwidth.

Signal Acquisition Timing and Vertical Accuracy

Specifications for frequency limits, rise time, pulse response, vertical position ranges, and accuracy.

Signal Acquisition Channel Isolation

Details on common mode rejection ratio and channel-to-channel crosstalk.

Time Base System Specifications

Specifications for sample rate range, waveform interpolation, and record length.

Time Base Measurement and Display

Specifications for record length, time scales, accuracy, and measurement functions.

Triggering System Specifications

Details on trigger types, sources, holdoff, input impedance, and voltage limits.

Trigger Coupling, Slope, and Sensitivity

Specifications for trigger coupling, edge slope, and DC-coupled trigger sensitivity.

Triggering: Non-DC Coupled, Levels, and Video

Specifications for non-DC coupled sensitivity, trigger level ranges, accuracy, and video trigger settings.

Triggering: Pulse Width and Frequency Counter

Specifications for pulse-width triggering, guardbands, trigger points, and frequency counter.

Trigger Frequency Counter Specifications

Details on frequency counter resolution, accuracy, frequency range, and signal source.

Display Specifications

Specifications for display type, resolution, brightness, and contrast ratio.

Interfaces and Output Ports

Specifications for USB device, USB host, GPIB interface, and probe compensator.

Data Handling Characteristics

Details on retention of front panel settings and storage of waveforms/setups.

Power Distribution System

Specifications for power consumption, source voltage, frequency, and fuse rating.

Mechanical Characteristics

Specifications for weight, size dimensions, and cooling method.

Environmental Performance Specifications

Specifications for operating and non-operating temperature, humidity, and altitude.

Data Logging System Characteristics

Details on duration, source, and folder selection for data logging.

Limit Testing System Characteristics

Details on source, reference channels, and template setup for limit testing.

Limit Testing Parameters

Parameters for limit testing including vertical/horizontal limits, actions, and stop conditions.

Finding Operating Information

Refer to User Manual for Operation

Directs users to the TDS2000C Series Digital Storage Oscilloscope User Manual for operational details.

Theory of Operation

Module-Level Electrical Operation

Explains the electrical operation of oscilloscopes by describing functional circuit blocks.

System Level Block Diagrams Overview

Presents high-level block diagrams for 2-channel and 4-channel oscilloscope models.

Main Board Description

Details the Main board's components and function, focusing on the 2-channel system.

Power Supply Module Function

Details the wide input range universal power supply and its secondary outputs.

Display Module Description

Describes the passive liquid crystal display module and its backlight.

Front Panel Operation

Explains front panel controls, LEDs, and their interaction with the main board.

Performance Verification

Required Equipment for Verification

Lists the necessary equipment and their minimum requirements for performance verification.

Performance Test Record Template

Provides a template for recording instrument performance test results.

Performance Verification Procedures

Outlines the conditions and steps required to perform verification procedures.

Self Test Procedure

Describes the automatic internal self-test performed on power-on.

Self Calibration Routine

Explains how to optimize the signal path for maximum measurement accuracy.

DC Gain Accuracy Check

Details the procedure to check the DC gain accuracy of all input channels.

Bandwidth Verification Procedure

Details the procedure to check the bandwidth of all input channels.

Sample Rate and Delay Time Accuracy Test

Tests the time base accuracy by checking sample rate and delay time.

Edge Trigger Sensitivity Verification

Details the procedure to check edge trigger sensitivity for all input channels.

External Edge Trigger Sensitivity Check

Details the procedure to check edge trigger sensitivity for the external trigger.

Vertical Position Accuracy Verification

Tests vertical position accuracy in conjunction with DC gain accuracy.

Adjustment Procedures

Required Equipment for Adjustment

Lists the equipment necessary for performing adjustment procedures.

Adjustment Procedure Overview

Details the steps and requirements for loading new calibration constants.

Enabling the Service Menu

Step-by-step instructions to enable the service menu for adjustments.

Maintenance Procedures

Preventing Electrostatic Discharge (ESD)

Precautions to avoid damaging semiconductor components due to static discharge.

General Care and Environment

Recommendations for best performance and protection from adverse conditions.

Interior Cleaning Instructions

Procedure for cleaning the interior of the oscilloscope using air and alcohol.

Exterior Cleaning Procedure

Procedure for cleaning the exterior of the oscilloscope safely.

Exterior Inspection Checklist

Checklist for inspecting external damage, wear, and missing parts.

Interior Inspection Guidelines

Guidelines for inspecting internal portions for damage and wear.

Removal and Installation Procedures

Summary of Disassembly and Reassembly

Outlines the order of procedures for complete disassembly and reassembly.

Required Tools for Servicing

Lists the specific tools needed for removing and replacing oscilloscope modules.

Rear Feet Removal and Installation

Procedure for removing and installing the rear feet of the oscilloscope.

Flip Feet Removal and Installation

Procedure for removing and installing the flip feet using needle-nose pliers.

Front-Panel Knobs Removal and Installation

Procedure for removing and installing front-panel knobs.

Power Button Removal and Installation

Procedure for removing and installing the power button.

Rear Case Removal and Installation

Procedure for removing and installing the rear case of the oscilloscope.

Front Feet Removal and Installation

Procedure for removing and installing the front feet of the oscilloscope.

Power Supply Module Replacement

Procedure for removing and installing the power supply module.

Internal Assembly Removal and Installation

Procedure for removing and installing the entire internal assembly.

Display Adapter Module Replacement

Procedure for disconnecting and removing the display adapter board.

Front-Panel Cable Replacement

Procedure for connecting and disconnecting the front-panel cable.

Main Board Module Replacement

Procedure for removing and installing the main board module, noting ESD sensitivity.

Display Module Replacement

Procedure for removing and installing the display module, cautioning against shield separation.

Front-Panel Module Replacement

Procedure for connecting and installing the front-panel module.

Keypad Replacement

Procedure for removing and installing the keypad, emphasizing contact cleanliness.

Troubleshooting Guide

Adjustment After Repair

Note on the necessity of adjustment after replacing the main board or power supply.

Troubleshooting Tools and Equipment

Lists the tools and equipment required for troubleshooting the oscilloscope.

Troubleshooting Diagnostic Tree

Introduces the diagnostic flow chart for isolating problems.

Probe Compensation Output Troubleshooting

Troubleshooting guide for issues with the probe compensation output signal.

Troubleshooting the Power Supply

Steps to diagnose issues with the power supply module by checking voltages.

Troubleshooting the Display Module

Steps to diagnose a nonfunctional display by checking signals at the main board connector.

Troubleshooting the Backlight

Steps to diagnose a nonfunctional backlight by checking power supply voltages.

Troubleshooting the Front Panel

Steps to diagnose front panel issues using service menus and diagnostic tests.

Troubleshooting the Main Board

Steps to diagnose main board issues by checking power supply voltages.

Troubleshooting the USB Interface

Procedure for troubleshooting USB interface issues, often involving the main board.

Using the Error Log for Diagnostics

Instructions on accessing and interpreting the error log for fault identification.

Repackaging Instructions

Packaging for Shipment or Storage

Guidelines for using appropriate cartons and cushioning for packaging.

Storage Environmental Conditions

Recommendations for storing the oscilloscope in a clean, dry environment.

Circuit Diagrams

Electrical Operation Diagrams

Describes electrical operation via circuit blocks and module interconnections.

Replaceable Parts Identification

Parts Ordering Information

Details required information and procedures for ordering replacement parts.

Part Number Revision Level Explained

Explains how Tektronix part numbers indicate revision levels.

Module Servicing Options

Describes options for module servicing, including exchange for remanufactured units.

Using the Replaceable Parts List

Guide to identifying and ordering components using the provided parts list.

2-Channel Model Replaceable Parts List

List of replaceable parts for 2-channel models, including Tektronix part numbers and descriptions.

4-Channel Model Replaceable Parts List

List of replaceable parts for 4-channel models, including Tektronix part numbers and descriptions.

Power Supply, Cables, and Wires Parts List

List of replaceable parts for power supply module, cables, and wires.

Back Case and Trim Parts List

List of replaceable parts for the back case and trim components.

Vertical Position Accuracy Test Spreadsheet Example

VPA Test Spreadsheet Overview

Provides a filled-in example of the Vertical Position Accuracy test spreadsheet.

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