Tektronix - TDS 644A - Oscilloscope
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Equipment:
TDS 644A
Date:
1993
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Information
The TDS 620A 640A, & 644A are portable, four-channeldigitizing Oscilloscopes suitable for use in a variety of test and measurement applications
and systems.
Key features include:
• A maximum digitizing rate of 2 GS/s on each of the
full-featured channels (four on the TDS 640A and 644A, two on the TDS 620A simultaneously with an analog bandwidth of 500 MHz.
• Four input channels, each with 8-bit vertical resolution,
and each with a record length of 2,000 samples and 8-bit vertical resolution.
• Extensive triggering capabilities: such as edge, logic, and
glitch. Video trigger Option 05 is also available. The video trigger
modes are NTSC, SECAM, PAL, HDTV, and FlexFormatTM (user definable format).
• Acquisition modes such as sample, envelope, and average.
• A full complement of advanced functions, like continuously-updated
measurements, results and local pass/fail decision making.
• Specialized display modes, such as variable persistence
with color grading, dot or vector mode, sin(x)/x or linear display
filters, and user selectable color pallettes. The "Fit to Screen" features
compresses the entire waveform record to fit on the screen.
• A unique graphical user Interface (GUI), an on-board help
mode, and a logical front-panel layout which combine to deliver a new
standard in usability.
• Full GPIB Software programmability. Hardcopy output using GPIB,
RS-232, or Centronics ports. RS-232 and Centronics are
standard on the TDS 644A and optional, as option 13, on the TDS 620A and
640A.
• VGA output for driving remote monitors.
• A 1.44 Mbyte, DOS 3.3 or later-compatible, floppy disk
drive (option 1F on the TDS 620A and 640A) and NVRAM mass storage for saving waveforms, hardcopies, and Oscilloscope setups.
• On the TDS 644A a color display for distinguishing among waveforms,
their measurements, and associated text.
User Interface Use a combination of front-panel buttons, knobs, and
on-screen menus to control the oscilloscope's many functions. The front-panel controls are grouped according to function: vertical, horizontal,
trigger, and special. Set a function you adjust often, such as vertical positioning or the time base setting, directly by its own front-panel knob. Set functions which you change less often, such as vertical coupling and horizontal mode, indirectly using selected menus.
Menus
Pressing one (sometimes two) front-panel button(s), such as
vertical menu, displays a main menu of related functions, such as coupling,
bandwidth, etc., at the bottom of the screen. Pressing a main-menu
button, such as coupling, displays a side menu of settings for that
function, such as AC, DC, or GND (ground) coupling, at the right side of the screen. Pressing a side-menu button selects a setting such as DC.
Indicators
On-screen readouts help you keep track of the settings for various functions,
such as vertical and horizontal scale and trigger level.
Some readouts use the cursors or the automatic parameter extraction feature (called measure) to display the results of measurements made or the status of the instrument.
General Purpose Knob
Assign the general purpose knob to adjust a selected parameter function.
More quickly change parameters by toggling the SHIFT button.
Use the same method as for selecting a function, except the final
side-menu selection assigns the general purpose knob to adjust some
function, such as the position of measurement cursors on screen, or the setting for a channel's fine gain.
GUI
The user Interface also makes use of a GUI, or Graphical
User Interface to make setting functions and interpreting the display more
intuitive. Some menus and status are displayed using iconic representations
of function settings such as those shown here for full, 100 MHz, and 20
MHz bandwidth. Such icons allow you to more readily determine status
or the available settings.
3 Manuals
User manual
Manual type:
User manual
Pages:
378
Size:
2.0 MB
Language:
english
Revision:
Seventh edition
Manual-ID:
070-8709-06
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
April 28, 2013
MD5:
95d81bae-a023-aa2e-8c63-a91e8335a437
Downloads:
9270
Information
TDS Family Oscilloscope Programmer Manual
This programmer manual covers the TDS 410 420, 460, 520A, 524A, 540A,
544A, 620A, 640A, 644A, 684A, 744A, & 784A. It also covers Advanced DSP
Math (optional on the TDS420, 460, 520A, 540A, 620A, & 640A), the
RS-232/Centronics Interface (optional on the TDS 410 420, 460, 520A, 540A,
620A, & 640A), and the Option 05 Video Trigger. This manual provides
information on operating your Oscilloscope using the General Purpose Interface Bus (GPIB) Interface Table of Contents
Getting Started
Overview of the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–1
Setting Up Remote Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Syntax and Commands
Command Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Command and Query Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1
Clearing the TDS Family Oscilloscope 2–3
Command Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
Constructed Mnemonics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Argument Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
Syntax Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
Command Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Acquisition Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
Alias Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Application Menu Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–12
Calibration and Diagnostic Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13
Cursor Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–13
Display Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–14
File System Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
Hardcopy Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–16
Horizontal Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–17
Limit Test Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–18
Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–19
Miscellaneous Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–21
RS-232 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–22
Save and Recall Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–22
Status and Error Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–23
Trigger Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–24
Vertical Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–31
Waveform Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–32
Zoom Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–37
Command Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–39
Status and Events
Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
Event Handling Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
Synchronization Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–7
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–12
Programming Examples
Compiling the Example Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
Appendices
Appendix A: Character Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A–1
Appendix B: Reserved Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B–1
Appendix C Interface Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . C–1
GPIB Function Subsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–1 Interface Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C–2
Appendix D: Factory Initialization Settings . . . . . . . . . . . . . . . . . . . . . D–1
Glossary and Index
Service manual
Manual type:
Service manual
Pages:
288
Size:
106.3 MB
Language:
english
Revision:
Manual-ID:
070-8718-04
Date:
January 1993
Quality:
Electronic document, no scan, very well readable.
Upload date:
Dec. 25, 2017
MD5:
cef247aa-4071-c11f-8501-35210be2fa0f
Downloads:
2833
Information
List of Figures
List of Tables
Safety Summary
Table of Contents
Specifications
General Product Description
User Interface Menus
Indicators
General Purpose Knob
GUI
Signal Acquisition System
Horizontal System
Trigger System
Acquisition Control
On-Board User Assistance
Help
Autoset
Measurement Assistance
Cursor
Measure
Digital Signal Processing (DSP)
Storage and I/O
Display
Zoom
Nominal Traits
Warranted Characteristics
Typical Characteristics
Operating Information
Using this Manual
Before Servicing
Strategy for Servicing
Manual Structure
Manual Conventions
Modules
Safety
Symbols Tektronix Service
Warranty Repair Service
Repair or Calibration Service
Self Service
Finding Other Information
General Information
Supplying Operating Power
Power Cord Information
Operating Voltage
Memory Backup Power
Operating Environment
Operating Temperature
Ventilation Requirements
Applying and Interrupting Power
Power On
Power Off
Repackaging Instructions
Installed Options
General Operating Instructions
Screen Layout
Basic Procedures
How to Power On
How to Use Help
How to Use the Status Menu
How to Set Functions
How to Set Complex Functions
Theory of Operation
Circuit Description
Logic Conventions
Module Overview
Performance Verification
Brief Procedures
General Instructions
Conventions
Self Tests
Verify Internal Adjustment, Self Compensation,
and Diagnostics
Functional Tests
Verify All Input Channels
Verify the Time Base
Verify the Main and Delayed Trigger Systems
Verify the File System (Optional on TDS 620A and 640A) . . .
Performance Tests
Prerequisites
Equipment Required
Test Record
Signal Acquisition System Checks
Check Accuracy of Offset (Zero Setting)
Check DC Gain and Voltage Measurement Accuracy
Check Analog Bandwidth
Check Delay Between Channels
Time Base System Checks
Check Accuracy for Long-Term Sample Rate, Delay Time,
and Delta Time Measurements
Trigger System Checks
Check Accuracy (Time) for Pulse-Glitch or Pulse-Width
Triggering
Check Accuracy, Trigger-Level or Threshold, DC
CoupledSensitivity, Edge Trigger, DC Coupled
Output Signal Checks
Check O u t p u t s — A U X 1 (for TDS 620A or CH 3 (for TDS 640A or 644A), Main and Delayed Trigger
Check Probe Compensator Output Option 05 Video Trigger Checks
Check Video Trigger
Adjustment Procedures
Adjustment Procedures
Requirements for Performance
Personnel
Warm-Up Period
Access
System
Optional Peripherals
Test Equipment
Usage
Performing the Adjustments
Complete Adjustment
Individual Adjustments
Partial Adjustment
Adjustment After Repair
Adjustment Dependencies
Equipment Required
Adjustment Instructions
Hardware Installation Software Installation Software Based Adjustments Probe Adjustment for the P6139A Probe Compensate the Probe Measure Probe Bandwidth
Adjust the Probe — High Frequency Response
Display Assembly Adjustment
Brightness and Contrast Adjustment TDS 620A and 640A - Monochrome - Only)
Rotation, Brightness, and Contrast Adjustment TDS 644A Color - Only)
Maintenance Information
Procedures Not In This Section
Preventing ESD
Precautions
Susceptibility to ESD
Inspection and Cleaning
General Care
Inspection and Cleaning Procedures
Inspection — Exterior
Cleaning Procedure — Exterior
Inspection — Interior
Cleaning Procedure — Interior
Lubrication
Removal and Installation Procedures
Preparation — Please Read
List of Modules
General Instructions
Summary of Procedures
Access Procedure
Procedures for External Modules
Front-Panel Knobs
Line Fuse and Line Cord
EMI Gaskets
Rear Cover and Cabinet
Front Cover, Trim Ring, Menu Buttons, and Attenuator Panel
A12 Front-Panel Assembly
Display-Frame Assembly
Cabinet Modules
Procedures for Outer-Chassis Modules
A15 Attenuator Assembly
Fan
A14 D1 Bus and Analog-Power and Digital-Power Cables
..
A23 SerPar Board — RS232/Centronics Hardcopy Interface A29 Video Trigger Board
A11 Processor/Display Board
Top Cover and Board Brackets
Rear-Panel Cables
A10 Acquisition Board
Floppy Disk
Rear Chassis
Procedures for Inner-Chassis Modules
A16 Low Voltage Power Supply A20 or A30 Display Assembly and Supply Fuse
Front Subpanel
Main Chassis
Disassembly for Cleaning
Troubleshooting
Diagnostics
Firmware Updates
Service manual
Manual type:
Service manual
Pages:
288
Size:
5.0 MB
Language:
english
Revision:
Manual-ID:
070-8718-04
Date:
January 1993
Quality:
Electronic document, no scan, very well readable.
Upload date:
Sept. 15, 2019
MD5:
b540c661-d244-d59a-2c1e-59d9320afc70
Downloads:
1379
Information
Operating Information
Using this Manual ......................................................................................2-1
Before Servicing..................................................................................2-1
Strategy for Servicing ........................................................................2-1
Manual Structure ................................................................................2-2
Manual Conventions ..........................................................................2-3
Modules ..........................................................................................2-3
Safety ..............................................................................................2-3
Symbols ..........................................................................................2-3 Tektronix Service ................................................................................2-4
Warranty Repair Service................................................................2-4
Repair or Calibration Service........................................................2-4
Self Service......................................................................................2-5
Finding Other Information ................................................................2-5
General Information ..................................................................................2-7
Supplying Operating Power..............................................................2-7
Power Cord Information................................................................2-8
Operating Voltage..........................................................................2-9
Memory Backup Power ................................................................2-9
Operating Environment......................................................................2-9
Operating Temperature ................................................................2-9
Ventilation Requirements..............................................................2-9
Applying and Interrupting Power....................................................2-10
Power On ........................................................................................2-10
Power Off ........................................................................................2-10
Repackaging Instructions ................................................................2-11
Installed Options ................................................................................2-11
General Operating Instructions..............................................................2-13
Screen Layout......................................................................................2-13
Basic Procedures................................................................................2-13
How to Power On ..........................................................................2-13
How to Use Help............................................................................2-14
List of Figures............................................... vii
List of Tables................................................ xi
Safety Summary............................................. xiii
Specifications
Specifications..............................................................................................1-1
General Product Description............................................................1-1
User Interface 1-2
Menus ..............................................................................................1-2
Indicators ........................................................................................1-2
General Purpose Knob..................................................................1-2
GUI....................................................................................................1-2
Signal Acquisition System................................................................1-3
Horizontal System ..............................................................................1-3
Trigger System ....................................................................................1-4
Acquisition Control ............................................................................1-4
On-Board User Assistance ..............................................................1-5
Help..................................................................................................1-5
Autoset ............................................................................................1-5
Measurement Assistance..................................................................1-5
Cursor..............................................................................................1-5
Measure ..........................................................................................1-5
Digital Signal Processing (DSP) ..................................................1-6
Storage and I/O....................................................................................1-6
Display....................................................................................................1-7
Zoom................................................................................................1-7
Nominal Traits..............................................................................................1-9
Warranted Characteristics ................................... 1-13
Typical Characteristics....................................... 1-19
How to Use the Status Menu........................................................2-14
Howto Set Functions....................................................................2-15
How to Set Complex Functions ..................................................2-18
Theory of Operation
Circuit Description ....................................................................................3-1
Logic Conventions..............................................................................3-1
Module Overview ................................................................................3-1
Performance Verification
Brief Procedures ........................................................................................4-1
General Instructions ..........................................................................4-1
Conventions..........................................................................................4-2
Self Tests ..............................................................................................4-4
Verify Internal Adjustment, Self Compensation,
and Diagnostics ......................................................................4-4
Functional Tests ..................................................................................4-6
Verify All Input Channels ..............................................................4-7
Verify the Time Base......................................................................4-8
Verify the Main and Delayed Trigger Systems ..........................4-9
Verify the File System (Optional on TDS 620A and 640A) ... 4-11
Performance Tests......................................................................................4-13
Prerequisites ..................................................................................4-13
Equipment Required......................................................................4-14
Test Record ....................................................................................4-17
Signal Acquisition System Checks ................................................4-21
Check Accuracy of Offset (Zero Setting)....................................4-21
Check DC Gain and Voltage Measurement Accuracy ............4-23
Check Analog Bandwidth ............................................................4-29
Check Delay Between Channels ................................................4-33
Time Base System Checks ..............................................................4-37
Check Accuracy for Long-Term Sample Rate, Delay Time,
and Delta Time Measurements ............................................4-37
Trigger System Checks......................................................................4-40
Check Accuracy (Time) for Pulse-Glitch or Pulse-Width
Triggering ................................................................................4-40
Check Accuracy, Trigger-Level or Threshold, DC Coupled .. 4-43
Sensitivity, Edge Trigger, DC Coupled........................................4-46
Output Signal Checks........................................................................4-51
Check Outputs — AUX1 (for TDS 620A or CH 3 (for TDS 640A or 644A), Main and Delayed Trigger ................4-51
Check Probe Compensator Output............................................4-54 Option 05 Video Trigger Checks ....................................................4-59
Check Video Trigger......................................................................4-59
Adjustment Procedures
Adjustment Procedures............................................................................5-1
Requirements for Performance ......................................................5-1
Personnel ........................................................................................5-1
Warm-Up Period ............................................................................5-1
Access..............................................................................................5-2
System ............................................................................................5-2
Optional Peripherals......................................................................5-2
Test Equipment ..............................................................................5-2
Usage......................................................................................................5-2
Performing the Adjustments ........................................................5-3
Complete Adjustment....................................................................5-3
Individual Adjustments..................................................................5-3
Partial Adjustment..........................................................................5-4
Adjustment After Repair................................................................5-4
Adjustment Dependencies ..........................................................5-4
Equipment Required ..........................................................................5-5
Adjustment Instructions ....................................................................5-6
Hardware Installation ....................................................................5-6 Software Installation ......................................................................5-7 Software Based Adjustments ......................................................5-7 Probe Adjustment for the P6139A Probe 5-10
Compensate the Probe 5-10
Measure Probe Bandwidth ..........................................................5-12
Adjust the Probe — High Frequency Response ......................5-14
Display Assembly Adjustment ............................ 5-18
Brightness and Contrast Adjustment TDS 620A and 640A - Monochrome - Only) ................5-18
Rotation, Brightness, and Contrast Adjustment TDS 644A Color - Only)..................................................5-21
Maintenance
Maintenance Information..........................................................................6-1
Procedures Not In This Section......................................................6-1
Preventing ESD....................................................................................6-2
Precautions ....................................................................................6-2
Susceptibility to ESD ....................................................................6-2
Inspection and Cleaning ..........................................................................6-5
General Care ........................................................................................6-5
Inspection and Cleaning Procedures............................................6-5
Inspection — Exterior....................................................................6-6
Cleaning Procedure — Exterior ..................................................6-6
Inspection — Interior ....................................................................6-7
Cleaning Procedure — Interior....................................................6-8
Lubrication ......................................................................................6-8
Removal and Installation Procedures ..................................................6-9
Preparation — Please Read..............................................................6-9
List of Modules ..............................................................................6-10
General Instructions ......................................................................6-10
Summary of Procedures ..............................................................6-10
Access Procedure ..............................................................................6-16
Procedures for External Modules ..................................................6-17
Front-Panel Knobs ........................................................................6-17
Line Fuse and Line Cord ..............................................................6-18
EMI Gaskets....................................................................................6-19
Rear Cover and Cabinet................................................................6-20
Front Cover, Trim Ring, Menu Buttons, and Attenuator Panel 6-23
A12 Front-Panel Assembly ..........................................................6-25
Display-Frame Assembly..............................................................6-28
Cabinet Modules............................................................................6-29
Procedures for Outer-Chassis Modules........................................6-31
A15 Attenuator Assembly..............................................................6-31
Fan....................................................................................................6-32
A14 D1 Bus and Analog-Power and Digital-Power Cables .. 6-33
A23 SerPar Board — RS232/Centronics Hardcopy Interface 6-35
A29 Video Trigger Board ..............................................................6-37
A11 Processor/Display Board......................................................6-42
Top Cover and Board Brackets....................................................6-44
Rear-Panel Cables..........................................................................6-45
A10 Acquisition Board ..................................................................6-46
Floppy Disk ....................................................................................6-48
Rear Chassis ..................................................................................6-50
Procedures for Inner-Chassis Modules........................................6-52
A16 Low Voltage Power Supply 6-52
A20 or A30 Display Assembly and Supply Fuse ......................6-53
Front Subpanel ..............................................................................6-58
Main Chassis ..................................................................................6-59
Disassembly for Cleaning ................................................................6-60
Troubleshooting..........................................................................................6-63
Diagnostics ..........................................................................................6-63
Firmware Updates ..............................................................................6-64
Options
Electrical Parts List
Diagrams
Mechanical Parts List