Tektronix 420 Manuals

Manuals and User Guides for Tektronix 420. We have 1 Tektronix 420 manual available for free PDF download: Service Manual

Tektronix 420 Service Manual

Tektronix 420 Service Manual (275 pages)

Digitizing Oscilloscopes

Brand: Tektronix | Category: Test Equipment | Size: 3.29 MB

Table of Contents

Table of Contents

4
List of Tables

14
- Service Safety Summary
  16
- Safety Summary
  
  19
- Diagrams
  
  20
- Manual Structure
  
  20
- Preface
  
  20
- Manual Conventions
  
  21
  - Modules
    21
  - Safety
    21
  - Symbols
    21
- Related Manuals
  
  21
- Introduction
  
  22
- Before Servicing
  
  22
- Strategy for Servicing
  
  22
- Tektronix Service
  
  23
  - Warranty Repair Service
    23
  - Repair or Calibration Service
    23
  - Self Service
    24
- Specifications
  
  26
- Product Description
  
  27
- General
  
  27
- User Interface
  
  27
  - Menus
    28
  - Indicators
    28
  - General Purpose Knob
    28
  - Gui
    28
- Signal Acquisition System
  
  28
- Horizontal System
  
  29
  - Table 1-1: Record Length Vs. Divisions Per Record
    29
- On-Board User Assistance
  
  30
  - Help
    30
  - Autoset
    30
- Acquisition Control
  
  30
- Trigger System
  
  30
- Measurement Assistance
  
  31
  - Cursor
    31
  - Measure
    31
  - Digital Signal Processing (DSP)
    31
- Storage and I/O
  
  31
- Display
  
  32
  - Zoom
    32
- Nominal Traits
  
  33
- Warranted Characteristics
  
  38
- Performance Conditions
  
  38
- Typical Characteristics
  
  44
- Operating Information
  
  47
- Supplying Operating Power
  
  48
- Installation
  
  48
- Applying and Interrupting Power
  
  51
  - Power-Up
    51
  - Power-Down
    52
  - Table 2-2: Effects of Corrupted Data
    52
- Operating Environment
  
  51
  - Operating Temperature
    51
  - Ventilation Requirements
    51
- Repackaging Instructions
  
  53
- Installed Options
  
  53
- Operating Information
  
  54
- Screen Layout
  
  54
- Basic Procedures
  
  54
  - How to Power up
    54
  - How to Use Help
    55
  - How to Use the Status Menu
    55
  - Figure 2-2: Map of Display Functions
    55
  - How to Set Functions
    56
  - How to Set Complex Functions
    59
- Theory of Operation
  
  64
- Module Overview
  
  65
- Logic Conventions
  
  65
- Circuit Description
  
  65
- Performance Verification
  
  69
- General Instructions
  
  70
- Brief Procedures
  
  70
- Conventions
  
  71
  - Figure 4-1: Map of Display Functions
    72
- Self Tests
  
  73
  - Verify Internal Adjustment, Self Compensation, and Diagnostics
    73
  - Figure 4-2: Verifying Adjustments and Signal Path Compensation
    74
- Functional Tests
  
  75
- Performance Tests
  
  82
  - Prerequisites
    82
  - Equipment Required
    82
  - Table 4-1: Test Equipment
    83
  - Test Record
    84
- Signal Acquisition System Checks
  
  87
- Time Base System Checks
  
  100
- Trigger System Checks
  
  104
- Output Signal Check
  
  117
- Adjustment Procedures
  
  120
- Requirements for Performance
  
  121
  - Personnel
    121
  - Warm-Up Period
    121
  - Access
    121
  - System
    122
  - Test Equipment
    122
- Usage
  
  122
  - Performing the Adjustments
    122
  - Complete Adjustment
    123
  - Individual Adjustments
    123
  - Partial Adjustment
    123
  - Adjustment after Repair
    123
  - Table 5-1: Adjustments Required for Module Replaced
    123
  - Adjustment Dependencies
    124
  - Table 5-2: Adjustments and Dependencies
    124
- Equipment Required
  
  125
  - Table 5-3: Test Equipment, Fixtures, and Supplies
    125
- Adjustment Instructions
  
  126
  - Hardware Installation
    126
  - Software Installation
    127
  - Table 5-4: GPIB Board Configuration
    127
  - Software-Based Adjustments
    128
- Probe Adjustment
  
  129
  - Figure 5-1: Hookup for Probe Compensation
    129
    
    Compensate the Probe
    130
    
    Figure 5-2: Performing Probe Compensation
    130
    
    Figure 5-3: Proper and Improper Probe Compensation
    130
    
    Measure the Probe Bandwidth
    131
    
    Figure 5-4: Exposing the Inner Probe Tip
    131
    
    Figure 5-5: Initial Test Hookup (TDS 410 and TDS 420 Only)
    132
    
    Figure 5-6: Initial Test Hookup (TDS 460 Only)
    132
    
    Adjust the Probe - High Frequency Response
    134
    
    Figure 5-7: Exposing the Probe Body
    134
    
    Figure 5-8: Initial Test Hookup (TDS 410 and TDS 420 Only)
    135
    
    Figure 5-9: Initial Test Hookup (TDS 460 Only)
    135
    
    Figure 5-10: Probe Test Hookup (TDS 410 and TDS 420 Only)
    137
    
    Figure 5-11: Probe Test Hookup (TDS 460 Only)
    137
    
    Figure 5-12: Locations of Probe Adjustments
    138
- Monitor Assembly Adjustment
  
  140
- Maintenance
  
  147
- Maintenance Information
  
  148
- Procedures Not in this Section
  
  148
- Preventing ESD
  
  149
- General Care
  
  152
- Inspection and Cleaning Procedures
  
  152
  - Inspection - Exterior
    153
  - Cleaning Procedure - Exterior
    153
  - Table 6-2: External Inspection Check List
    153
  - Inspection - Interior
    154
  - Table 6-3: Internal Inspection Check List
    154
  - Cleaning Procedure - Interior
    155
  - Lubrication
    155
- Inspection and Cleaning
  
  152
- Removal and Installation Procedures
  
  156
- Preparation - Please Read
  
  156
  - List of Modules
    157
  - Cable Removal
    157
  - General Instructions
    157
  - Summary of Procedures
    157
  - Table 6-4: Tools Required for Module Removal
    159
- Access Procedure
  
  160
- Procedures for Module Removal and Installation
  
  168
  - Front-Panel Knobs and Shafts
    168
  - Line Fuse and Line Cord
    170
  - Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, and Cabinet Handle and Feet
    171
  - Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gaskets
    175
  - A06 Front-Panel Assembly, ESD Shield, and Menu Flex and Probe Code Flex Circuits
    178
  - A08 Jumper Board Assembly, D1 Bus, and Board Supports
    187
  - A03 CPU Assembly
    188
  - A02 Display Assembly
    190
  - A09 DSP Assembly
    192
  - A01 Backplane Assembly and Its Mount
    193
  - Back-Up Batteries
    196
  - A25 Low Voltage Power Supply and Its Mount
    198
  - Fan and Fan Mount
    201
  - Line Filter
    203
  - A07 Auxiliary Power Supply
    205
  - A04 Acquisition Assembly
    207
  - Main Chassis
    209
  - A05 Attenuator Assembly and Shield
    210
  - A26 Monitor Assembly
    211
- Troubleshooting
  
  212
- Firmware Updates
  
  213
- Troubleshooting Equipment
  
  214
- Options and Accessories
  
  241
- Standard Accessories
  
  244
- Optional Accessories
  
  245
- Replaceable Electrical Parts List
  
  250
- Replaceable Parts List
  
  260
- Using the Replaceable Parts List
  
  261

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