Tektronix DG2040 User Manual

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User Manual

DG2040 Data Generator

071-0257-50

This document applies to firmware version 1.00 and above.

www.tektronix.com

that in all previously published material. Specifications and price change privileges reserved. T ektronix, Inc., P.O. Box 500, Beaverton, OR 97077 TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.

WARRANTY

T ektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, T ektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for packaging and shipping the defective product to the service center designated by T ektronix, with shipping charges prepaid. T ektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the T ektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.

This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate maintenance and care. T ektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than T ektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction caused by the use of non-T ektronix supplies; or d) to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product.

THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REP AIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY . TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT , SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES.

TableĂofĂContents

Getting Started

Operating Basics

General Safety Summary ix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contacting Tektronix xiii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Getting Started 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Product Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Inspection 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Cord Options 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repackaging for Shipment 1-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Basics 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Controls, Connectors, and Display 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Structure Overview 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Modes Overview 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Basic Menu Operations 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tutorials 2-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reference

Reference 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Edit Menu Screen 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu Trees 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Edit Menu Functions 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

File Menu 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Settings Menu 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Block Menu 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Execute Action Menu 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Enhanced Action Menu 3-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Make Sequence Menu 3-57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setup Menu 3-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setup Display 3-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Group Assign Menu 3-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output Condition Menu 3-70. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Level Condition Menu 3-72. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Timing Condition Menu 3-73. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Run Mode Menu 3-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Trigger Menu 3-77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clock Menu 3-79. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Application Menu 3-80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Utility Menu 3-84. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

Table of Contents

Appendices

Index

Appendix A: Specifications A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Characteristics A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Certification and Compliances A-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix B: Performance Verification B-1. . . . . . . . . . . . . . . . . . . . . . . . .

Before Running the Performance Tests B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self Tests B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance T ests B-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T est Record B-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix C: Miscellaneous C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Factory Settings C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Conversion T able Examples C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Inspection and Cleaning C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

ListĂofĂFigures

Table of Contents

Figure 1-1: Rear panel power switch, fuse holder,

and connector 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 1-2: Location of the ON/STBY switch 1-10. . . . . . . . . . . . . . . . . . . .

Figure 2-1: Front panel controls 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-2: Rear panel connectors 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-3: Floppy disk drive 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-4: Display elements 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-5: Hardware block diagram 2-8. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-6: Data structures 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-7: Menu and bezel buttons 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-8: DG2040 front-panel keypad 2-16. . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-9: Numeric entry in a menu item field 2-17. . . . . . . . . . . . . . . . . .

Figure 2-10: General-purpose knob and arrow buttons 2-18. . . . . . . . . . .

Figure 2-11: Menu element knob icon and underscore 2-18. . . . . . . . . . . .

Figure 2-12: Timing display format 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-13: Table display format 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-14: Binary display format 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-15: Numeric display format 2-21. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-16: Pattern data editing procedure 2-22. . . . . . . . . . . . . . . . . . . .

Figure 2-17: Serial/Parallel editing mechanism 2-22. . . . . . . . . . . . . . . . . .

Figure 2-18: Area and Point cursors 2-23. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-19: Text input menu 2-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-20: Pop-up message box 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-21: Operating buttons 2-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-22: Binary pattern creation 2-30. . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-23: Pattern edited in Tutorial 2 2-33. . . . . . . . . . . . . . . . . . . . . . .

Figure 2-24: Output parameter settings 2-35. . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-25: DG2040 Data Generator

and oscilloscope connection 2-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-26: Tutorial 4 block sequence 2-37. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-27: Block separation 2-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-28: Creating a binary up-counter for block BK1 2-41. . . . . . . . .

Figure 2-29: Creating a binary down-counter for block BK3 2-42. . . . . . .

Figure 2-30: Sample subsequence 2-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-31: Sample sequence 2-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Figure 2-32: Line pointer 2-45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-33: Sample sequence 2-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 2-34: Pattern and edges to be controlled in the DATA0 2-49. . . . .

Figure 2-35: Created pattern and highlighted edges 2-51. . . . . . . . . . . . . .

Figure 2-36: DG2040 and oscilloscope connection 2-52. . . . . . . . . . . . . . . .

Figure 3-1: EDIT menu (timing display) 3-1. . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-2: Edit Menu tree 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-3: Setup Menu tree 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-4: Application Menu tree 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-5: Utility Menu tree 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-6: Import Configuration Menu (File format:

AWG2000 series waveform file) 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-7: Data write in terms of point positions 3-12. . . . . . . . . . . . . . . .

Figure 3-8: Data write in terms of data bit positions 3-13. . . . . . . . . . . . . .

Figure 3-9: The Export Config menu 3-16. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-10: Settings pop-up menu 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-11: Reference mark “M” display 3-19. . . . . . . . . . . . . . . . . . . . . .

Figure 3-12: Arrow button action display (timing display) 3-20. . . . . . . . .

Figure 3-13: The Arrow button menu 3-21. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-14: Operation flow for pattern data output #1 3-25. . . . . . . . . . .

Figure 3-15: Operation flow for pattern data output #2 3-26. . . . . . . . . . .

Figure 3-16: Bit Width pop-up menu 3-27. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-17: Block pop-up menu 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-18: Block cursor movement 3-29. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-19: Dividing a block 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-20: Combine blocks 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-21: Change a block size 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-22: Pop-up action menu 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-23: Edit area 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-24: Cut 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-25: Paste-insert 3-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-26: Paste-replace 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-27: Set data to high 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-28: Set data to low 3-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-29: Insert high data 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-30: Insert low data 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-31: Invert data 3-37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-32: Mirror vertical 3-38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

Table of Contents

Figure 3-33: Mirror horizontal 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-34: Magnify 3-39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-35: Shift left (add zero) 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-36: Shift right (add zero) 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-37: Shift left 3-41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-38: Shift right 3-42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-39: Rotate left 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-40: Rotate right 3-43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-41: Standard pattern data 3-44. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-42: Creating the clock pattern 3-45. . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-43: Clock Pattern pop-up menu 3-46. . . . . . . . . . . . . . . . . . . . . . .

Figure 3-44: Register value and tap setting example 3-47. . . . . . . . . . . . . .

Figure 3-45: Shift Register Generator pop-up menu 3-48. . . . . . . . . . . . . .

Figure 3-46: Logical AND Operation Example 3-50. . . . . . . . . . . . . . . . . .

Figure 3-47: Logical Operation pop-up menu 3-50. . . . . . . . . . . . . . . . . . .

Figure 3-48: Bit Operation pop-up menu 3-52. . . . . . . . . . . . . . . . . . . . . . .

Figure 3-49: Serial Code Converter menu 3-53. . . . . . . . . . . . . . . . . . . . . .

Figure 3-50: Edit Code Table menu 3-55. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-51: Make Sequence menu and a sequence example 3-57. . . . . . .

Figure 3-52: Make Subsequence menu and a subsequence

example 3-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-53: Example of a sequence expanded into sequence

memory 3-62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-54: Event jump operation timing 3-63. . . . . . . . . . . . . . . . . . . . . .

Figure 3-55: SETUP menu display 3-66. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-56: Group Assign pop-up menu 3-67. . . . . . . . . . . . . . . . . . . . . . .

Figure 3-57: Bit structure assignment 3-68. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-58: Output channel assign pop-up menu 3-70. . . . . . . . . . . . . . . .

Figure 3-59: Example delay parameter 3-73. . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-60: Repeat Mode pattern data output

(when no sequence is defined) 3-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-61: Repeat Mode pattern data output

(when a sequence is defined) 3-74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-62: Single Mode pattern data output

(when no sequence is defined) 3-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-63: Single Mode pattern data output

(when a sequence is defined) 3-75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-64: Enhanced Mode sequence output 3-76. . . . . . . . . . . . . . . . . .

Figure 3-65: Trigger slope and level control 3-77. . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

Table of Contents

Figure 3-66: Relation between incoming signal and

edge position shift 3-81. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-67: Examples of the edge control bit 3-82. . . . . . . . . . . . . . . . . . .

Figure 3-68: Display/hardcopy menu 3-88. . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-69: System menu 3-92. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-70: Status display 3-96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 3-71: Diag menu 3-96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure A-1: Timing definition in edge control input A-8. . . . . . . . . . . . . .

Figure A-2: Transfer function for edge control input A-9. . . . . . . . . . . . .

Figure A-3: Signal timing A-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure B-1: Operating buttons and menu layout B-4. . . . . . . . . . . . . . . . .

Figure B-2: Diagnostics menu B-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure B-3: Frequency measurement connections B-8. . . . . . . . . . . . . . . .

Figure B-4: Sequence & data output connections B-11. . . . . . . . . . . . . . . .

Figure B-5: Sequence & data output timing chart B-13. . . . . . . . . . . . . . . .

Figure B-6: External reference input connections B-15. . . . . . . . . . . . . . . .

Figure B-7: Maximum operating frequency connections B-18. . . . . . . . . .

Figure B-8: Maximum operating frequency (1) B-20. . . . . . . . . . . . . . . . . .

Figure B-9: Maximum operating frequency (2) B-20. . . . . . . . . . . . . . . . . .

Figure B-10: Maximum operating frequency (3) B-21. . . . . . . . . . . . . . . . .

Figure B-11: Maximum operating frequency connections B-23. . . . . . . . .

Figure B-12: Maximum operating frequency (4) B-25. . . . . . . . . . . . . . . . .

Figure B-13: Maximum operating frequency (5) B-25. . . . . . . . . . . . . . . . .

Figure B-14: Internal trigger generator & external trigger input

connection B-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure B-15: Edge control mode operation connection B-30. . . . . . . . . . . .

Figure B-16: Edge control mode B-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure B-17: Output level measurement connections B-32. . . . . . . . . . . . .

Figure B-18: Clock output amplitude measurement connection B-35. . . .

Figure B-19: Delay time measurement connection B-39. . . . . . . . . . . . . . . .

Figure B-20: Rise time and fall time measurement connection B-42. . . . .

Figure C-1: Conversion image example C-3. . . . . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

ListĂofĂTables

Table of Contents

Table 1-1: Power cord options 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-2: Power Cord Identification 1-4. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-3: Standard accessories 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-4: Optional accessories 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 1-5: Fuse And Fuse Cap Part Numbers 1-8. . . . . . . . . . . . . . . . . . .

Table 1-6: AC Line Power Requirements 1-8. . . . . . . . . . . . . . . . . . . . . . .

Table 2-1: DG2040 display elements 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-2: Data structure terms 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-3: Run modes 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-4: Update modes 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-5: Bottom menu elements 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-6: Side and submenu elements 2-16. . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-7: Numeric input example 2-17. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-1: Edit menu display 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-2: EDIT menu functions 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-3: Import parameters 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-4: Export parameters 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-5: Arrow button functions 3-21. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-6: Pattern data display format 3-22. . . . . . . . . . . . . . . . . . . . . . . .

Table 3-7: Block cursor movement 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-8: Numeric input differences 3-40. . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-9: Standard pattern data descriptions 3-44. . . . . . . . . . . . . . . . . .

Table 3-10: Parameter Items 3-46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-11: Shift register generator parameters 3-48. . . . . . . . . . . . . . . . .

Table 3-12: Logical operation parameters 3-51. . . . . . . . . . . . . . . . . . . . . .

Table 3-13: Bit operation parameters 3-52. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-14: Serial code converter parameters 3-54. . . . . . . . . . . . . . . . . . .

Table 3-15: Edit Code Table parameters 3-55. . . . . . . . . . . . . . . . . . . . . . .

Table 3-16: Numeric key description 3-56. . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-17: SETUP menu functions 3-65. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-18: Setup menu display 3-66. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-19: APPLICATION menu functions 3-80. . . . . . . . . . . . . . . . . . .

Table 3-20: UTILITY menu functions 3-84. . . . . . . . . . . . . . . . . . . . . . . . .

Table 3-21: Error Code 3-97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DG2040 Data Generator

vii

Table of Contents

Table A-1: Electrical characteristics A-1. . . . . . . . . . . . . . . . . . . . . . . . . . .

Table A-2: Period JItter A-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table A-3: Cycle to Cycle JItter A-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table A-4: Mechanical characteristics A-6. . . . . . . . . . . . . . . . . . . . . . . . .

Table A-5: Environmental characteristics A-6. . . . . . . . . . . . . . . . . . . . . .

Table A-6: Certifications and compliances A-10. . . . . . . . . . . . . . . . . . . . .

Table B-1: Performance check disk files B-2. . . . . . . . . . . . . . . . . . . . . . .

Table B-2: Required equipment B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table B-3: Error codes B-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table B-4: Internal clock frequency accuracy B-10. . . . . . . . . . . . . . . . . .

Table B-5: High level output voltage accuracy B-34. . . . . . . . . . . . . . . . . .

Table B-6: Low level output voltage accuracy B-34. . . . . . . . . . . . . . . . . .

Table B-7: Clock output voltage accuracy B-37. . . . . . . . . . . . . . . . . . . . .

Table B-8: Rise and fall time accuracies B-43. . . . . . . . . . . . . . . . . . . . . . .

Table B-9: DG2040 test record B-44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table C-1: Factory settings C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table C-2: External Inspection Check List C-8. . . . . . . . . . . . . . . . . . . . .

viii

DG2040 Data Generator

General Safety Summary

Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified.

Only qualified personnel should perform service procedures.

To Avoid Fire or

Personal Injury

Use Proper Power Cord. Use only the power cord specified for this product and

certified for the country of use. Connect and Disconnect Properly. Do not connect or disconnect probes or test

leads while they are connected to a voltage source. Ground the Product. This product is grounded through the grounding conductor

of the power cord. To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, ensure that the product is properly grounded.

Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings and markings on the product. Consult the product manual for further ratings information before making connections to the product.

Do Not Operate Without Covers. Do not operate this product with covers or panels removed.

Use Proper Fuse. Use only the fuse type and rating specified for this product. Avoid Exposed Circuitry. Do not touch exposed connections and components

when power is present. Do Not Operate With Suspected Failures. If you suspect there is damage to this

product, have it inspected by qualified service personnel.

Symbols and Terms

DG2040 Data Generator

Do Not Operate in Wet/Damp Conditions.

Do Not Operate in an Explosive Atmosphere.

Keep Product Surfaces Clean and Dry. Provide Proper Ventilation. Refer to the manual’s installation instructions for

details on installing the product so it has proper ventilation.

Terms in this Manual. These terms may appear in this manual:

WARNING. Warning statements identify conditions or practices that could result in injury or loss of life.

General Safety Summary

CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.

Terms on the Product. These terms may appear on the product: DANGER indicates an injury hazard immediately accessible as you read the

marking. WARNING indicates an injury hazard not immediately accessible as you read the

marking. CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product:

CAUTION

Refer to Manual

WARNING

High Voltage

Double

Insulated

Protective Ground

(Earth) Terminal

Not suitable for

connection to

the public telecomĆ

munications network

DG2040 Data Generator

Preface

Related Manuals

The user manual for the DG2040 Data Generator contains the following sections: The Getting Started section briefly describes the DG2040 Data Generator and

provides installation instructions, options listing, accessories listing, repacking instructions, and power on and off instructions.

The Operating Basics section introduces terminology specific to the DG2040 Data Generator and provides an overview of the internal structure of the instrument, operating principles, basic operating procedures, and numeric input methods. This section also provides examples of basic signal editing.

The Reference section provides detailed information about the functions and use of the DG2040 Data Generator’s main menus.

The Appendices section provides product specifications, performance verification instructions, factory settings, conversion table examples, and inspection and cleaning instructions.

Other documentation for the instrument includes: H The DG2040 Data Generator Programmer Manual explains how to control

the DG2040 Data Generator with a computer through the GPIB or RS-232-C interface. This programmer manual is a standard accessory.

H The DG2040 Data Generator Service Manual describes how to maintain and

service the DG2040 Data Generator and provides a complete module-level description of the operation of the instrument. This manual is an optional accessory.

DG2040 Data Generator

Preface

Conventions

The following typographical conventions are used in this manual: H Names of front-panel controls and menu item names are in bold with the

same case (initial capitals or all upper case) as they appear on the unit itself.

For example, SETUP, Sub-sequence. H Sections 2, 3, and Appendix B describe the instrument functions by using a

table to list a sequence of steps. Each operating procedure is presented in

order, starting with step 1, and progresses until the end of the procedures.

Execute the action in the top-left table entry first. Then execute actions from

left to right along each row. When you are done executing the steps in one

row, move to the left end of the next row down, and continue executing the

listed steps until the end of the table. H When steps require that you make a sequence of selections using menu

buttons, an arrow ( ! ) marks each transition between menu buttons. Refer

to Menu Notation on page 2-14 for further information.

For pop-up menus, use the general-purpose knob to select items from the

menu list. Operations, such as Operation 6 (below), do not involve pressing

the buttons shown in the row above, but rather are descriptions of operations

to be performed.

Front panel

Menu button Bottom button PopĆup menu Side button

Operation 1 Operation 2 Operation 3 Operation 4 Operation 5

Operation 6 (for example, Use the generalĆpurpose knob to set cursor field to 360.")

Operation 7

button

xii

DG2040 Data Generator

Contacting Tektronix

Preface

Phone 1Ć800Ć833Ć9200*

Address Tektronix, Inc.

Department or name (if known) 14200 SW Karl Braun Drive P.O. Box 500 Beaverton, OR 97077 USA

Web site www.tektronix.com

Sales support 1Ć800Ć833Ć9200, select option 1*

Service support 1Ć800Ć833Ć9200, select option 2*

Technical support Email: techsupport@tektronix.com

1Ć800Ć833Ć9200, select option 3*

6:00 a.m. - 5:00 p.m. Pacific time

* This phone number is toll free in North America. After office hours, please leave a

voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices.

DG2040 Data Generator

xiii

Preface

xiv

DG2040 Data Generator

Getting Started

Product Description

This section provides the following information:

H Description and features of the DG2040 Data Generator H Initial inspection procedure H Standard and optional accessories listings H Installation procedures H Power on and off procedures H Repackaging procedure for shipment

The DG2040 Data Generator is a programmable data generator with a 2-channel data output pattern memory. It accommodates a 4k-step sequence controller, which enables the generation of data patterns longer than the pattern memory and also the dynamic change of the patterns due to the external events. The operating parameters, the channel configuration, and the pattern data are displayed or set using the graphic menu on the CRT monitor. The menu has a tree structure and can be operated easily using the bottom and side bezel switches.

Main Features

The DG2040 can be manually controlled from the front panel or remotely programmed via GPIB or RS-232-C.

The DG2040 Data Generator includes the following main features:

H Maximum data rate of 1.1 GHz H 256 K word pattern memory H Flexible sequence looping (which does the equivalent of over a billion word

patterns)

H Two channels (complementary) providing the following:

Variable output levels (from –1.125 V to +3.5 V into 50 W) Edge Control function (CH0 only) Delay setting (10 ps resolution)

H Parallel and serial pattern editing

DG2040 Data Generator

1Ć1

Getting Started

Any memory size from 360 words to 256 K words can be used with no restrictions within that range. Each of the two bit data channels can be assigned to any output channel. The output channels support the setting of high and low output voltage levels, delay time, and edge position.

The DG2040 Data Generator also provides a 4000-step sequence controller, which enables the generation of a data pattern longer than the pattern memory and dynamic pattern changes triggered by external events.

The DG2040 Data Generator provides flexible data editing functions, including word and line unit input and extended data creation functions. Also, the DG2040 Data Generator provides a set of functions required for system construction, such as a sequencing function and a jump function using external input.

Applications

Initial Inspection

The following lists some of the DG2040 Data Generator applications: H Supports subassembly and system testing by simulating the digital signals

from incomplete sections of a product H Performs margin tests by using the DG2040 Data Generator to generate

patterns that have a low probability of occurrence or are difficult to generate H Constructs interactive digital simulation systems by using the sequence

output, external jump, and tristate control functions H Uses flexible data output functions to make the DG2040 Data Generator an

ideal data generator for simulation of semiconductor devices and drivers

specific to serial data communication and all types of digital circuits. H Performs various timing analysis and jitter/wander tests by using the edge

control function to generate jitter on all the edges or selected edge(s)

Inspect the DG2040 Data Generator shipping carton for external damage. Remove the DG2040 Data Generator from its package and check that it has not

been damaged in transit. Verify that the carton contains the basic instrument and its standard accessories. Refer to Accessories on page 1-5.

1Ć2

This instrument was thoroughly inspected for mechanical and electrical defects before shipment. It should be free of scratches and meet or exceed all electrical specifications. To confirm this, after inspecting the instrument for physical damage incurred in transit, test the electrical performance by following the procedures in Appendix B: Performance Verification. Contact your distributor if you find a discrepancy.

DG2040 Data Generator

Power Cord Options

Getting Started

NOTE. Save the shipping carton and packaging materials for repackaging in case shipment becomes necessary.

Table 1-1 lists the power cords available with the DG2040 Data Generator.

Table 1Ć1: Power cord options

Option Description Tektronix part number

A1 Europe 161Ć0104Ć06

A2 United Kingdom 161Ć0104Ć07

A3 Australia 161Ć0104Ć05

A4 North America 161Ć0104Ć08

A5 Switzerland 161Ć0167Ć00

DG2040 Data Generator

1Ć3

Getting Started

Table 1Ć2: Power Cord Identification

Plug Configuration Normal Usage Option Number

North America Standard

Europe A1

United Kingdom A2

Australia A3

North America A4

Switzerland A5

1Ć4

DG2040 Data Generator

Accessories

Getting Started

Standard Accessories

Table 1-3 lists the standard accessories provided with the DG2040 Data Generator.

Table 1Ć3: Standard accessories

Standard accessories Tektronix part number

DG2040 Data Generator User Manual

DG2040 Data Generator Programmer Manual 071Ć0258ĆXX

Performance Check Disk, 3.5Ćinch 063Ć3121ĆXX

GPIB Sample Program Disk, 3.5Ćinch 063Ć3122ĆXX

DGĆLINK Application Program Disk, 3.5Ćinch 063Ć2920ĆXX

Fuse 6A Fast 250 V (UL198G/3AG) 159Ć0239Ć00

Power cord 125 V/6A 161Ć0230Ć01

071Ć0257ĆXX

DG2040 Data Generator

1Ć5

Getting Started

Optional Accessories

Table 1-4 lists the optional accessories that are recommended for use with the DG2040 Data Generator.

Table 1Ć4: Optional accessories

Optional accessory Tektronix part number

DG2040 Data Generator Service Manual 071Ć0259ĆXX

Front Cover 200Ć3232Ć01

Accessory Pouch 016Ć1159Ć00

Rackmount kit 040Ć1444Ć00

Fuse 6A Fast 250 V (UL198G/3AG) 159Ć0239Ć00

Fuse cap 200Ć2264Ć00

Fuse 5A 250 V (T) (IEC127) 159Ć0210Ć00

Fuse cap 200Ć2265Ć00

GPIB Cable 012Ć0991Ć00

50 W SMA Cable, 1 m (39 inches), male 174Ć1341Ć00

50 W SMA Cable, 2 m (21 inches), male 174Ć0679Ć00

50 W SMA Cable, 0.5 m (20 inches), male 174Ć1427Ć00

SMA Precision Delay Cable, 1 ns, male 015Ć0562Ć00

SMA Precision Delay Cable, 2 ns, male 015Ć0560Ć00

SMA Precision Delay Cable, 4 ns, male 015Ć0561Ć00

50 W BNC Cable, 1 m (43 inches), male 012Ć0057Ć01

50 W BNC Cable, 0.6 m (24 inches), male 012Ć1342Ć00

50 W BNC Cable, double shield 2.5m (98 inches), male 012Ć1256Ć00

SMA T Connector, male to female, male 015Ć1016Ć00

50 W SMA termination, male 015Ć1022Ć00

50 W SMA Divider, male 015Ć1014Ć00

SMA Male to BNC Female Adapter, 015Ć0554Ć00

SMA Adapter Kit 020Ć1693Ć00

1Ć6

DG2040 Data Generator

Options

Getting Started

This subsection describes the options available for the DG2040 Data Generator. The following options are available:

Option 1R (Rack mounting) Option D1 (Test result report)

Each of these options is discussed in detail in the following paragraphs.

Option 1R (Rack Mount)

Option D1 (Test Result

Report)

Installation

Environment

When ordered with option 1R, the DG2040 Data Generator is shipped configured for mounting in a 19-inch rack. The floppy disk drive is moved so that it can be accessed from the front panel in this instrument.

If you need to configure a standard DG2040 Data Generator for mounting in a 19-inch rack refer to Table 1-4 Optional accessories on page 1-6 for the Tektronix part number for the rackmount kit.

A calibration data test result report will be provided with the DG2040 Data Generator when this option is specified.

Before you begin the installation, refer to the General Safety Summary at the front of this manual for power source, grounding, and other safety information.

Verify that you have the correct operating environment.

CAUTION. Damage to the instrument can occur if this instrument is powered on at temperatures outside the specified temperature range.

DG2040 Data Generator

The DG2040 Data Generator operates correctly in ambient temperatures from +10_ C to +40_ C and in relative humidity from 20% to 80%. For more operating environment information, refer to Appendix A: Specifications.

NOTE. If you are installing the instrument in a dedicated rack, refer to the instruction sheet that comes with the rack mounting kit for proper installation procedures.

Verify that there is at least 2.5 cm (1 inch) of clearance on top and bottom, 15.0 cm (6 inches) on the left and right sides, and 7.5 cm (3 inches) at the rear of the instrument to allow for heat dissipation. Verify that the air intake holes on the sides and bottom of the cabinet are not obstructed.

1Ć7

Getting Started

Check Fuse

Check the fuse to be sure it is the proper type and rating.

WARNING. To avoid electrical shock, be sure that the power cord is disconnected before checking the fuse.

Use a slotted screwdriver to remove the fuse. Push in and turn the fuse holder cap counterclockwise. See Figure 1-1 for the fuse location.

The instrument order specified either a UL approved or an IEC approved fuse. Each fuse requires its own cap. See Table

1-5.

Table 1Ć5: Fuse And Fuse Cap Part Numbers

Tektronix Fuse

Fuse

0.25 inch × 1.25 inch (UL 198.6, 3 AG): 6 A fast, 250 V

5mm× 20 mm (IEC 127): 5 A (T), 250 V 159Ć0210Ć00 200Ć2265Ć00

Part Number

159Ć0239Ć00 200Ć2264Ć00

Tektronix Fuse Cap Part Number

NOTE. The second fuse listed in the table above is approved under the IEC standards. This fuse is used in equipment sold in the European market.

Check Voltage Settings

Connect Power Cable

Check that you have the proper electrical connections. Refer to Table 1-6 for power requirements.

Table 1Ć6: AC Line Power Requirements

Name Description

Line Voltage Range 90 V - 250 V

Line frequency 48 Hz - 440 Hz ( 90 V - 127 V)

48 Hz - 63 Hz (127 V - 250 V)

Maximum power 300 W

Connect the proper power cord from the rear panel power connector to the power system. Refer to Table 1-2 for power cord identification.

1Ć8

DG2040 Data Generator

Getting Started

CAUTION. The instrument is shipped with a power cord appropriate for use with your power systems (normal 115 V power system or 230 V power system). If the instrument is to be used with a power system other than what the order specified, the power cord must be replaced with one appropriate for the power source used.

Standby Power

Apply power to the standby circuit of the instrument by pushing the PRINCIPAL POWER SWITCH on the rear panel of the instrument. Refer to Figure 1-1.

NOTE. After the instrument is installed, leave the PRINCIPAL POWER SWITCH on and use the ON/STBY switch as the power switch.

Power Connector

Power On

DG2040 Data Generator

Fuse PRINCIPAL POWER

SWITCH

Figure 1Ć1: Rear panel power switch, fuse holder, and connector

Press the ON/STBY switch on the lower left side of the front panel to power on the instrument. Refer to Figure 1-2.

After power on, verify that the fan is operating.

1Ć9

Getting Started

NOTE. Allow a 20 minute warm-up period prior to calibrating the clock for the instrument to operate at its optimum precision.

StartĆUp Diagnostics

Power Off

ON/STBY Switch

Figure 1Ć2: Location of the ON/STBY switch

The DG2040 automatically runs diagnostics when the instrument is powered on from the ON/STBY switch. These diagnostics check whether the instrument is performing within its defined operating characteristics. If all the diagnostic items have been completed without error, the instrument displays the EDIT menu.

NOTE. If the instrument chassis temperature is outside the specified operating range, an error will occur during the power-up diagnostics. If this happens, power off the instrument, wait until the chassis temperature is within normal operating range, and then power on the instrument again.

If an error is displayed, contact your Tektronix Field Office or representative.

To power off the DG2040 Data Generator, press the ON/STBY switch.

1Ć10

DG2040 Data Generator

NOTE. The ON/STBY switch disables the outputs of the power supply. The PRINCIPAL POWER SWITCH on the rear panel disconnects the instrument

from the primary voltage source.

Repackaging for Shipment

If this instrument is shipped by commercial transportation, use the original packaging material. If the original packaging is unfit for use or is not available, repackage the instrument as follows:

1. Obtain a corrugated cardboard shipping carton having inside dimensions at

2. If the instrument is being shipped to a Tektronix Service Center for repair or

Getting Started

least six inches greater than the instrument dimensions and having a carton test strength of at least 125 kg (275 pounds).

calibration attach a tag to the instrument showing the following information:

H The owner of the instrument (with address). H The name of a person at your firm who may be contacted if additional

information is needed.

H The complete instrument type and serial number. H A description of the service required.

3. Wrap the instrument with polyethylene sheeting or equivalent to protect the

outside finish and prevent entry of packing materials into the instrument.

4. Cushion the instrument on all sides by tightly packing dunnage or urethane

foam between the carton and the instrument, allowing for three inches (7.62 cm) of padding on each side (including top and bottom).

5. Seal the carton with shipping tape or with an industrial stapler.

6. Mark the address of the Tektronix Service Center and your return address on

the carton in one or more prominent locations.

DG2040 Data Generator

1Ć11

Getting Started

1Ć12

DG2040 Data Generator

Operating Basics

This section provides the following information:

H An overview of the instrument controls and their functions H An overview of the DG2040 Data Generator hardware H Information on operations commonly performed on the instrument and how

to enter numbers

H Tutorials showing how to edit, save, and recall pattern data

DG2040 Data Generator

2Ć1

Operating Basics

Controls, Connectors, and Display

Front Panel

Figure 2-1 Shows the locations of the front panel controls and connectors.

Bottom and side

bezel buttons

The main use of the bottom buttons is to call up sub menus, and the side buttons are used to execute more detailed operations within the sub menus.

See Figure 2-1 on page 2Ć3

1.1 Gbps

ON/STBY Button CLEAR MENU Button

This button is used as the power switch in normal operation. The PRINCIPAL POWER SWITCH on the rear panel must be on.

Cancels the current operation

and closes side and submenus.

The display can be returned to

the top level by repeatedly

pressing on the CLEAR MENU

button.

Figure 2Ć1: Front panel controls

CAUTION. If external voltages are applied to the data output connectors, be sure to set the high-impedance control correctly. Signal collisions may result in output currents or voltages in excess of the rated values.

Output Connectors

The CH 0 to CH 1 SMA connectors output pattern data with variable output level in the range

-1.125 V to +3.50 V into 50 W. The delay times for each channel can be varied from -1.0 ns to +1.0 ns. If you use only one output connector for each channel, you must terminate the other connector using an SMA termination.

2Ć2

DG2040 Data Generator

Operating Basics

START/STOP Button

Starts or stops pattern data output. When automatic pattern data update is not used, the pattern data is updated before output is started.

The indicator lights in the output state. It will flash when there is a discrepancy between the output data and the displayed data due to pattern data not being updated.

When automatic pattern data update is specified, the indicator flashes rapidly during data update. It flashes slowly when automatic update is not performed and data update is required.

Refer to Update on page 3Ć76 for update mode.

CURSOR Button Arrow Buttons EXECUTE Button GeneralĆpurpose knob

Activates or switches the cursor. The LED indicates that the generalĆpurpose knob will move the cursor.

The arrow buttons move the cursor. They are also used for special functions that are described on the screen when enabled.

STEP/EVENT Button

Advances the pattern data by 1 step when in step mode.

Generates an event pulse when the run mode is enhanced mode.

MENU Buttons

These buttons are the main menu buttons. When pressed, the menu is displayed and the corresponding LED is on.

Numeric Keys, Units Buttons

The numeric keys enter values in numeric or character input mode. The characters A to F are allocated to keys for hexadecimal input. Instructions are displayed when used for other operations.

When a units button appropriate for the input item is pressed, the input value and unit are confirmed.

Executes the edit operation set up with the EDIT menu. Confirms selection operations in selection screens.

GHz/ns

ENTER Key

Confirms numeric and character input.

Delete Key

Deletes previously input digits during numeric input. Deletes the character directly in front of the cursor during character input.

Controls several functions and adjusts numeric values. The knob icon displayed on the screen indicates that this knob controls the item.

HARD COPY Button

Makes a hard copy of the current screen. The LED flashes while in progress.

FORCE TRIGGER Button

Generates a trigger event.

TRIGGER INPUT

BNC connector accepts an external trigger signal.

EDGE CONTROL

BNCĂconnector accepts an external signal to move the edge position on CH0 data output.

Figure 2Ć1 : Front panel controls (cont.)

CAUTION. Only apply signals within the stipulated ranges to the TRIGGER INPUT connector. Signals that exceed those ranges can damage the instrument.

DG2040 Data Generator

2Ć3

Operating Basics

Rear Panel

RSĆ232 Connector

The RSĆ232 connector is used for remote computer control over a serial interface.

Figure 2-2 shows the rear panel signal and power connectors.

IEEE STD 488 Connector

This is a GPIB connector for remote computer control through an IEEE 488 standard parallel interface.

DIE IN DIESEM GERAT ENTSTEHENDE RONTGENSTRAHLUNG IST AUSREICHEND ABGESCHIRMT

BESCHLEUNIGUNGSSPANNUNGKLEINER ALS

Power Supply Fuse Holder

The same 6A fastĆblow fuse is used for both 115V and 230V systems.

20 KV

Power Connector

Connect the provided power cable to this connector.

SYNC OUT Connector

BNC connector provides a TTL level synchronization output signal.

CLOCK OUT Connector

SMA connector provides an internal clock output signal. If you use only one CLOCK OUT connector, you must terminate the other connector using an SMA termination.

EVENT OUT Connector

BNC connector provides a TTL level event output signal.

Figure 2Ć2: Rear panel connectors

2Ć4

EVENT IN Connector

BNC Connector accepts a TTL level event input signal.

PRINCIPAL POWER SWITCH

This switch applies power to the standby circuit. In addition to this switch being on, the front panel ON/STBY switch must also be turned on.

EXT REF IN Connector

BNC connector accepts a external reference signal.

CAUTION. Voltages in excess of the stipulated range can damage the instrument. Apply signals within the stipulated range to the AUX INPUT connector.

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Operating Basics

Floppy Disk Drive

Figure 2-3 shows the floppy disk drive controls and indicators. The floppy disk drive is located on the right side of the DG2040 Data Generator chassis. Use the floppy disk drive to save and recall instrument patterns and for setting data.

CAUTION. Data corruption on the floppy disk may occur if the eject button is pressed while the DG2040 Data Generator is writing to the floppy disk.

LED indicator Eject button

When the disk drive is in operation, the LED indicator is on.

Remove a floppy disk by pressing the eject button.

Figure 2Ć3: Floppy disk drive

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2Ć5

Operating Basics

Display Elements

Figure 2-4 shows the display elements, including bottom and side menus, work area, status lines, and so on. Also shown are a pop-up menu and message box. Table 2-1 describes each element in detail.

1 2

Figure 2Ć4: Display elements

2Ć6

DG2040 Data Generator

Table 2Ć1: DG2040 display elements

Reference

number

1 Status area

Label Description Page

Displays the current status of the instrument. This status line is always displayed. The status line displays the following two items:

MODE: Displays the run mode in which pattern data will be output.

Operating Basics

3Ć74

UPDATE: Displays the update method for pattern data output when data is updated.

In addition, there is also a disk icon that indicates if a floppy disk is inserted in the disk drive. A clock icon may also be displayed at the left end of the status line. When this icon is displayed, the instrument is busy with internal processing and cannot accept other inputs.

2 Date and Time

display area

3 Side menu Related side menu items are displayed here when a

4 Bottom menu When one of the buttons in the menu section is pressed,

5 Button function

description area

6 Message for

display area

7 PopĆup for

message box

8 PopĆup menu The instrument sometimes displays a popĆup menu

The date and time display can be turned on or off using the display function of the UTILITY menu.

bottom menu item is selected. The topmost entry in the side menu displays either a label representing the side menu or the operation name for the confirmed item.

the corresponding bottom menu is displayed. When a bottom menu item is selected the corresponding side menu is displayed. Selecting the same bottom menu item again closes the side menu.

Displays descriptions of the functions of the frontĆpanel buttons.

Displays messages regarding the current processing state. This area can be also used by remote commands to display user messages.

When required, the instrument temporarily displays a window at the center of the screen to display a warning or question for the user.

when a bottom menu or side menu item is selected. Enter a numeric value or select an item using either the generalĆpurpose knob or the frontĆpanel buttons.

3Ć76

3Ć89

2Ć15

2Ć2 and 2Ć3

2Ć6

2Ć25

2Ć6

DG2040 Data Generator

2Ć7

Operating Basics

Theory of Operation

This section presents an overview of the DG2040 Data Generator hardware, data structures, and operating modes to allow you to take full advantage of the DG2040 Data Generator.

Reference

Input

Trigger Input

Block Diagram

Edge Control Input

Clock Unit

PLL

Figure 2-5 shows the main hardware blocks that make up the instrument. This section describes these hardware blocks to provide the background knowledge necessary to use the instrument effectively.

Event Input

Clock

Bus

Pattern Generation Unit

Pattern Control

Circuit

CPU Unit

CPU

Pattern Memory

Sequence Memory

ROM

RAM

GPIB

Output Channels

RSĆ232ĆC

GPIB

RSĆ232ĆC

Data Output (CH0 and CH1, Complementary)

Clock Output (Complementary)

Event Output Sync Output

Front Panel

Figure 2Ć5: Hardware block diagram

2Ć8

Display

Floppy Disk Drive

DG2040 Data Generator

Operating Basics

CPU Unit

Pattern Generation Unit

The CPU unit controls the instrument and includes read only memory (ROM), random access memory (RAM), and an input/output (I/O) interface.

The ROM memory holds the program code that implements all the supported functions. The ROM contents are loaded at the factory.

The RAM memory holds a variety of information required by the CPU. The contents of RAM change according to the instrument’s operating state. The contents of RAM are retained by a built-in battery even when the instrument is turned off. The main instrument settings will still be in effect the next time the instrument is turned on. The pattern data memory and the sequence data memory, which are described later as a conceptual data model, are actually stored in one section of this RAM.

External interfaces include GPIB and RS-232 interfaces for remote control, a floppy disk drive controller, and a user interface consisting of the display and the front panel.

The pattern generation unit generates digital pattern signals based on the pattern data and sequence data specified by the user. This unit includes a pattern control circuit, pattern memory, and sequence memory.

Pattern memory and sequence memory are high-speed memories that hold the pattern data and sequence data, which are described later in this section. These memories supply pattern data to the pattern control circuit.

Clock Unit

Output Channels

Display and Front Panel

The clock unit provides the clock signals that generate the data patterns and detects and synchronizes external trigger signals.

The data generator uses the phase-lock-loop (PLL) circuit when generating the clock signals. This provides an output with excellent frequency precision.

The output channels provide variable output levels and digital signals to the device under test.

The output channels level-convert the pattern signals from the pattern generation unit to output signals appropriate for the device under test. They also handle fine adjustment of specific bit timing.

The user interface consists of the display and front panel. The display is a 16-level monochrome 640 × 480 pixel CRT. The front panel

consists of menu buttons, numeric keys, bezel buttons, a general-purpose knob for changing numeric values and item selection, and several signal output connectors.

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Operating Basics

Data Structure Overview

To make full and efficient use of the DG2040 Data Generator, you need to understand the data structures of the DG2040 Data Generator. This section presents an overview of the pattern data, setup data, and sequence data. Figure 2-6 shows the data structures that are described in the following sections. Table 2-2 lists the data structure related technical terms that appear frequently in the operating procedure descriptions.

Block Delimiter

BlockBlockBlockBlock

Group

Allocation

Pattern Data

Output Channel

Allocation

Output

Channels

Figure 2Ć6: Data structures

Table 2Ć2: Data structure terms

Term Meaning

Pattern data Basic data for patterns, consisting of 2Ćbit words

Memory size The number of pattern data words (360 words to 256 K words)

Group allocation Definitions of pattern data bit combinations

Block delimiter Delimiter that defines pattern data start and stop points

Block division Pattern data division by block delimiters

Output channel allocation Definition of the corresponding relationship between pattern data

and output bits

2Ć10

Pattern Data

Setup data Settings for the above items

Sequence data Pattern output sequence program

Pattern data is the basic data that defines the digital signals to be output. The pattern data is a collection of 2-bit words. The total number of words is called the memory size. The memory size can be any value from a minimum of 360 words to a maximum of 256 K words (262,144).

DG2040 Data Generator

Operating Basics

Pattern data that has been transferred to the pattern memory in the pattern generation unit hardware can be output as digital signals. Pattern memory consists of 2-bit words, with the 2 bits in a one-to-one correspondence with the 2 output channels. The definition of the relationship between pattern data bits and pattern memory bits is called output channel allocation.

The pattern data to pattern memory transfer operation is performed automatically each time the data is modified, or you can manually cause the transfer to occur. This is called the data update mode, and it can be selected by user.

Setup Data

Groups

Blocks

There are numerous settings that define data structures and relationships between data items and that specify output channel states and other parameters. These settings are collectively referred to as the setup data. Since this data is associated with the pattern data, it is handled together with the pattern data in operations, such as saving instrument settings and data to a floppy disk.

The setup data includes a wide range of settings, including output voltage levels, delay, and clock frequency settings in addition to the definitions described here.

Although each bit in the pattern data can be defined independently, it is easier to edit and display data if multiple bits are collected and handled as a single group. Any set of bits can be assigned as a group.

Pattern data can be divided into blocks. A block is a user-specified range of pattern data identified with a unique label. Blocks are divided by setting delimiters called block delimiters. Block delimiters are set in word units. Sequences, which are described later, control data output in block units.

DG2040 Data Generator

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Operating Basics

Sequence Data

The sequence data is a program that specifies the order in which the pattern data is output. The sequence data is used to set up operations, such as repeatedly putting out blocks of pattern data for a specified number of times and jumping to a specified block when an external event occurs. Sequences allow long patterns to be set up without preparing large quantities of data.

Sequences can include subsequences so that you can make complex sequence programming easier. Sequence data is transferred to the pattern generation unit sequence memory, and controls the operation of the pattern control circuit. When you use the run mode you can select whether all the sequence data is valid or whether enhanced mode settings, such as event jumps in the sequence, are ignored.

Operating Modes Overview

Run Modes

In the run modes, pattern output is controlled by the pattern generation units pattern control circuit. The DG2040 Data Generator supports four run modes: repeat, single, step, and enhanced. These run modes are specified with the SETUP → Run Mode menu. Table 2-3 provides functional information for each mode.

Table 2Ć3: Run modes

Run mode Function

Repeat Repeats the pattern data from the first to last data point indefinitely.

If a sequence is defined, it repeats the output according to that sequence.

Single Outputs the pattern data once from the first to last data point in point

order. If a sequence is defined, outputs the pattern once according to that sequence.

Step Operates identically to repeat mode, except that just one data point

is output each time the STEP/EVENT button is pressed.

Enhanced Same as Repeat with the addition that event jumps and trigger waits

are also effective.

NOTE. The Repeat, Single, and Step modes ignore the event jump and trigger wait settings.

2Ć12

DG2040 Data Generator

Operating Basics

Update Modes

When pattern data or sequence data is created or edited or the output channel allocations are changed, the pattern that is actually output will not be updated until the new settings are transferred to the pattern generation unit.

There are two update methods: auto and manual. The update modes are set up with the Update item in the SETUP ! Run Mode menu. Table 2-4 provides functional information for both modes.

Table 2Ć4: Update modes

Update mode Function

Auto Changes are reflected in the hardware as soon as they are entered.

Manual Changes are reflected in the hardware when specified by you.

NOTE. The response to edit operations while in Auto mode may be slow when there is a large amount of data being edited. In such cases, it is more efficient to perform a number of edit operations and then update the output data in manual mode.

Basic Menu Operations

Menu System

This section describes the DG2040 Data Generator menu system and numeric input methods.

The menu system is used for instrument settings, instrument operation, and selection of the pattern data output parameter. Pressing one of the menu buttons at the center of the front panel displays one of the menus that forms the basis of DG2040 Data Generator operation. There are four menu buttons, EDIT, SETUP, APPLICATION, and UTILITY, as shown in Figure 2-7.

The menu items displayed on the screen are selected by pressing the corresponding bottom or side bezel button. The bezel buttons consist of seven bottom buttons and five side buttons, as shown in Figure 2-7.

DG2040 Data Generator

2Ć13

Operating Basics

1.1 Gbps

Side Buttons

Bottom Buttons

Menu Buttons

Figure 2Ć7: Menu and bezel buttons

When the target menu item is selected, the selection items and numeric input entries controlled by that menu are displayed. Items can be selected or numeric values changed using the numeric keys and the general-purpose knob.

Selecting a menu item causes one of the following operations:

H Invokes a lower level menu H Selects an item:

H The selected item changes each time a bezel button is pressed.

2Ć14

Menu Notation

H A list is displayed and an item is selected from that list. H Enables a numeric input H Executes the function associated with the menu item as soon as the menu

item is selected.

The following notation is used in this manual to show the order to push instrument buttons:

Front panel menu button ! Bottom menu button ! [Side menu button or

pop-up menu item] The menu path starts with a front panel menu button, followed by an arrow (!),

and then a bottom menu. The item in parenthesis may be repeated more than

DG2040 Data Generator

Operating Basics

once, as needed. For example, SETUP ! Output Condition ! Control

Condition is executed as follows:

1. Press the SETUP button on the front panel.

2. Press the Output Condition bottom button.

3. Press the Control Condition side button.

Menu Item Display

Starting with each main menu, the instrument displays bottom, side, and submenu items according to fixed rules.

Bottom Menu. The bottom menu changes according to whether items are selected or not, and whether an item is valid or not, as shown in Table 2-5.

Table 2Ć5: Bottom menu elements

Menu item Description

Menu item in the unselected state. The small box in the upper right corner is black.

Menu item in the selected state. The small box in the upper right corner is white.

Menu item that cannot be selected, since it is invalid in the current state.

DG2040 Data Generator

Side and Submenus. The menu items that are manipulated with the side buttons, can be classified according to the manipulations they support. These menu items can be differentiated visually as shown in Table 2-6.

2Ć15

Operating Basics

Table 2Ć6: Side and submenu elements

Menu Item Description Menu item Description

Menu items that execute a function immediately

Menu items that call up submenus

Numeric Input

Menu items that switch between on and off each time the side button is pressed.

Menu items that allow numeric values to be set using the numeric keys or

Menu items that allow selections to be made with the generalĆpurpose knob

Menu items that cannot be used in the current instrument state

the generalĆpurpose knob

Enter numeric values by using the front-panel keypad or the general-purpose knob. This section describes these numeric input methods.

FrontĆPanel Keypad. The numeric keys, the units buttons, the delete key and the ENTER key are used for entering numeric values. See Figure 2-8.

987

GHz/ns

MHz/ms

Delete

Key

2Ć16

Numeric

Keys

Figure 2Ć8: DG2040 frontĆpanel keypad

kHz/ms/mV

Hz/s/V ENTER

Units

ENTER

Buttons

Key

DG2040 Data Generator

Operating Basics

Use the following procedure to input numeric values with the numeric keys,

ENTER key, and units buttons on the front panel.

1. Press the button for the menu item to be changed.

2. Input the value using the numeric keys.

3. Press a units button or the ENTER key.

Figure 2-9 shows a menu display during numeric input. The asterisk to the left of the menu items indicates that you are entering a value in that field. Press the front panel ENTER key to confirm an entered value and to remove the asterisk from the menu item field.

Figure 2Ć9: Numeric entry in a menu item field

Numeric Input Example. Table 2-7 shows how to change the clock frequency to

12.3 Hz when the value, before entering the input state, was 100.0 Hz. Press the 1, 2, ., 3, and ENTER keys in that order. The numeric input box changes as shown in Table 2-7.

Table 2Ć7: Numeric input example

Press keys in this order Numeric input window display State of the value

100 Hz PreĆnumeric input

1 *1

2 *12

. * 12.

3 * 12.3

ENTER 12.30000 Hz Value confirmed

Numeric input in progress

Press a units button after a value has been entered to confirm both the value and the unit in a single operation. Pressing a units button before entering the input state changes only the unit without changing the value.

DG2040 Data Generator

2Ć17

Operating Basics

Failure to press the ENTER key or a units button after entering a value, prior to switching menu items, will cause the entered value to be discarded. The value returns to the previous value.

Setting Values with the GeneralĆPurpose Knob. The general-purpose knob and the left and right arrow buttons can be used to set values in numeric input boxes. The knob icon is displayed close to the box to show that you can use the general-purpose knob to enter values. The general-purpose knob is used to increase or decrease the value of the digit indicated by the underscore. Rotating the knob to the left decreases the value and rotating it to the right increases the value.

Figures 2-10 shows the arrow keys and the general-purpose knob. Figure 2-11 shows a menu element that can use the general-purpose knob to

enter numeric values.

CURSOR EXECUTE

Arrow Buttons generalĆpurpose knob

Figure 2Ć10: GeneralĆpurpose knob and arrow buttons

Knob Icon

Underscore

2Ć18

Figure 2Ć11: Menu element knob icon and underscore

You do not need to use the front panel ENTER key to confirm a value when using the general-purpose knob to change a value. The input value is confirmed automatically without pressing the ENTER key.

DG2040 Data Generator

Operating Basics

Follow the procedure below to change a value with the general-purpose knob.

1. Press the button for the menu item to be changed.

2. Use the left and right arrow buttons to move the underscore line to the digit

to be modified. The front panel arrow buttons control the amount of change that can be

achieved with the general-purpose knob. Pressing the a button moves the underscore one digit to the left and thus multiplies the effect of turning the general-purpose knob by ten. Inversely, pressing the ' button moves the underscore one digit to the right and reduces the effect of turning the general-purpose knob by a factor of ten.

3. Change the value by turning the general-purpose knob.

Pattern Data Display

Format

You can display pattern data in one of four formats: timing display, table display, binary display, and numeric display. Use the EDIT ! Settings item to select the display format.

You get the same output results from whichever display format you select. Use these different formats according to your needs. These display formats are discussed below .

Timing Display Format. The Timing display format shows the waveform patterns for the data graphically with the time axis in the horizontal direction. The Timing display shows the data so that data transitions and the relationships between bits can be easily seen. Refer to Figure 2-12.

Figure 2Ć12: Timing display format

DG2040 Data Generator

2Ć19

Operating Basics

Table Display Format. The Table display format shows the data for each clock as numeric values for each group. Refer to Figure 2-13.

Figure 2Ć13: Table display format

Binary Display Format. The Binary display format shows the data bit states for

each clock as 0 or 1. This is the basic display for digital signals and is an appropriate format for handling data in bit units. If no groups are defined, data can only be displayed in binary format. Refer to Figure 2-14.

Figure 2Ć14: Binary display format

2Ć20

DG2040 Data Generator

Operating Basics

Numeric Display Format. The Numeric display format shows the data of specified bit width for binary or hexadecimal radix values. When using the numeric display format, parallel data can be displayed as serial data. Refer to Figure 2-15.

Edit Operations

Figure 2Ć15: Numeric display format

The different editing operations are selected from the EDIT ! Execute Action menu. Press the front panel EXECUTE button to execute the selected operation. Editing can be accomplished quickly by using the general-purpose knob and the CURSOR button to move the cursor. Press the EXECUTE button to complete the process. Figure 2-16 shows the procedure used to select the Invert data editing operation and invert data bits at three locations.

DG2040 Data Generator

2Ć21

Operating Basics

Select Invert data.

Execute Action menu

Before

execution

Move the cursor to the numbered positions. At each position, press the EXECUTE button to take the selected action.

After

execution

Pattern data

Figure 2Ć16: Pattern data editing procedure

Parallel/Serial Editing. The Numeric display format allows you to edit the data of

every specified bit width in a selected data bit. You can select two to 32 bits and edit in BIN (binary) or HEX (hexadecimal) format. Figure 2-17 show an example of displaying and editing in 4 bit width in HEX format.

63C7C

.....

Figure 2Ć17: Serial/Parallel editing mechanism

2Ć22

DG2040 Data Generator

Operating Basics

To edit serial data as parallel data, select bit width in the Bit Width pop-up menu brought up by selecting Settings ! Set numeric view format, select Settings

! Set view type of numeric, and then select Execute Action ! Numeric Input. Press the numeric key after you have pressed EXECUTE key on the

front panel. This editing function allows you to convert parallel data to serial data.

Area and Point Cursors

Cursor Window Width Window Cursor Window Value

Knob Icon

When editing pattern data, there are two types of cursors used for indicating the data that will be the object of the edit operation. The type of cursor used depends on whether a particular point in the data must be indicated, or an area of data must be indicated.

Each type of cursor has a different form. They are called the area cursor and the point cursor. Figure 2-18 shows these cursors.

Point Cursor

Area Cursor

Scope

Figure 2Ć18: Area and Point cursors

The area cursor is used to select a range of signal data, such as during a copy operation. In this operation, the data in the area specified by the area cursor is copied to the edit buffer memory. The paste operation is an example where the point cursor is used. In this operation, data that was previously loaded into the edit buffer memory is copied into pattern memory at the point specified by the point cursor.

The area cursors area is determined by a combination of an area origin (as defined by a data group and a sample point position), the number of points (which corresponds to the width of the area) and the scope (which corresponds to the height of the area). The origin data group is set with the up and down arrow

DG2040 Data Generator

Width Window Value

2Ć23

Operating Basics

buttons. The area cursor origin sample point is displayed in the Cursor window at the upper left of the screen in the same way as the point cursor is displayed. It can be manipulated in the same way as the point cursor.

The width of the area cursor is displayed in the Width window. It can be set with the general-purpose knob or numeric keys when the knob icon has been moved to the Width window using the CURSOR button. Use the EDIT ! Execute Action ! Set Scope item to set the area cursor height.

The position of the point cursor is determined by a data group and a sample point. The data group is set with the vertical arrow buttons. The sample point position is displayed in the Cursor window at the upper left of the screen. It can be set with the general-purpose knob or the numeric keys when the knob icon has been moved to the Cursor window with the front panel CURSOR button.

Text Input

Text input is required to enter the names for data groups, data blocks, floppy disk files, and other items. When such input is required, the instrument automatically brings up the dialog box shown in Figure 2-19.

Figure 2Ć19: Text input menu

The text input menu displays a default string for the item. Use the side menu Clear String button to erase this default string. Use the arrow buttons or the general-purpose knob to move the reverse-video cursor to the desired character in the letter/digit matrix. Press the EXECUTE button to complete the process. Incorrect input can be erased with the delete key. The position where the character is inserted is indicated with an underscore. Use the left and right arrow buttons to change the position of the underscore. Select all the required characters then press the OK button on the side menu to complete the process. Press Cancel on the side menu to cancel text input and return to the previous menu.

2Ć24

DG2040 Data Generator

Operating Basics

PopĆup Message Box

The instrument displays a message box that prompts you to confirm operations that would be difficult to recover. Figure 2-20 shows the file deletion confirmation message box. Press the side menu OK button to execute the operation displayed in the box. Press Cancel to cancel the operation and return to the state prior to selecting the current menu.

Figure 2Ć20: PopĆup message box

DG2040 Data Generator

2Ć25

Operating Basics

Tutorials

This manual provides simple tutorials to learn the basic procedures for pattern signal creation and output. Following are the five tutorials that will be given:

H Creating a Pattern and Storing into a File on page 2-27 H Loading and Editing a Pattern Stored in a File on page 2-30 H Setting up Signal Output on page 2-34 H Creating a Sequence on page 2-37 H Controlling Pattern Edges on page 2-49

Refer to the menu descriptions in the Reference section for detailed explanations of the menus and functions used in these procedures.

NOTE. These tutorials do not cover all the features and functions of the DG2040 Data Generator. They are intended only to introduce the operations required to execute the instrument’s basic functions.

Be sure that the DG2040 Data Generator is properly installed. Refer to Installation on page 1-7.

Refer to Power On on page 1-9 for power-on instructions. The following equipment is required for Tutorials 1 through 5:

H An IBM-formatted 3.5 inch floppy disk (2HD, 1.44 MB) H A digital storage oscilloscope (a Tektronix TDS700-series oscilloscope or

equivalent)

H A BNC cable H Two SMA terminations H Two SMA cables H Two SMA female-to-BNC male adapters

Each operating procedure is presented in table format beginning with step 1 and progresses through the end of the procedure. Tables, such as the one shown on page 2-27, list the steps for each procedure task. For these steps, press the buttons in the order shown in the table, from left to right in each row, from top to bottom of the table.

2Ć26

If a number is shown in the front-panel button column, enter that value using the keypad.

DG2040 Data Generator

Operating Basics

Use the general-purpose knob to select items from the menu list on pop-up menus.

Operations such as Operation 6 (below) do not involve pressing the buttons shown in the row above, but rather are descriptions of operations to be performed. Figure 2-21 shows the buttons used and the menu layout.

FrontĆPanel

Menu button Bottom button PopĆup menu Side button

Operation 1 Operation 2 Operation 3 Operation 4 Operation 5

Operation 6 (For example, set to xx with generalĆpurpose knob.)

Operation 7

button

Tutorial 1: Creating a

Pattern and Storing

the File

Side Menu

Bottom Menu

GeneralĆpurpose knob

Front-Panel Buttons

Menu ButtonsBottom Buttons Side Buttons

Figure 2Ć21: Operating buttons

Tutorial 1 creates the output pattern for an 2-bit binary counter and stores that pattern onto a 3.5 inch floppy disk.

NOTE. Initialize the instrument’s data and settings before creating new pattern data.

DG2040 Data Generator

2Ć27

Operating Basics

Follow the steps below by pressing the buttons in the order shown in the following tables (from left to right in each row and from top to bottom) to create a pattern and then store the file:

1. Clear the data memory.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

EDIT File New

button

2. Set up the environment by setting the pattern memory length to 1024 points.

Front-panel

Menu button Bottom button PopĆup menu Side button

Settings Set memory

size

OK 1024 *

button

* Use the frontĆpanel keypad to enter numeric values.

ENTER

2Ć28

DG2040 Data Generator

Operating Basics

3. Set the data bit positions and bit widths by setting the height (scope) and

width of the data that you are going to edit.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Execute Action

Move the knob icon to the Cursor window in the upper left area of the screen by

pressing the frontĆpanel CURSOR button once or twice.

Move the knob icon to the Width window in the upper left area of the screen by pressing

the frontĆpanel CURSOR button once.

Set scope OK

2 OK

button

ENTER

1024

ENTER

Press the down arrow button until the area cursor covers DATA0 to DATA1.

4. Create the binary pattern for a value increasing every 2 clock ticks.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Execute Action

Binary up counter

OK 2

OK EXECUTE

button

ENTER

The previous steps created the binary pattern shown in Figure 2-22 in DATA0 to DATA1.

DG2040 Data Generator

2Ć29

Operating Basics

Figure 2Ć22: Binary pattern creation

Tutorial 2: Loading and

Editing a Pattern

Stored in a File

Follow the steps below to save the created data on the 3.5 inch floppy disk.

5. Insert a blank IBM-formatted 3.5 inch floppy disk in the drive.

6. Name the new file COUNT1.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

File Save Data &

Setup

Clear String

COUNT1 * OK

* Select each character in the file name using the generalĆpurpose knob and the

up and down arrow buttons. Press the EXECUTE button to insert the character in the file name.

button

The data in this procedure is saved in the file named COUNT1.PDA.

Tutorial 2 loads a file from a 3.5 inch floppy disk and demonstrates pattern editing using that data.

Before loading a file from the 3.5 inch floppy disk, initialize the instrument’s data and settings. This allows you to see the effect of loading the file you previously saved in Tutorial 1.

2Ć30

DG2040 Data Generator

Operating Basics

1. Clear the data definitions.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

EDIT File New

Button

Follow the steps below to load the Tutorial 1 file from the 3.5 inch floppy disk:

2. Insert the 3.5 inch floppy disk in the instrument’s 3.5 inch floppy disk drive

and complete the actions in the following table.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

EDIT File Load Data &

Setup

Select the file COUNT1.PDA from the file list using the generalĆpurpose knob.

Button

3. Select DATA1 as the area to be edited.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

Execute Action

Move the knob icon to the Cursor window in the upper left area of the screen by

pressing the frontĆpanel CURSOR button once or twice.

Move the knob icon to the Width window in the upper left area of the screen by pressing

the frontĆpanel CURSOR button once.

Press the up and down arrow buttons until the area cursor covers DATA1.

Set scope OK

1 OK

Button

ENTER

1024

ENTER

DG2040 Data Generator

4. Complete the following actions to shift the bits in DATA1 exactly one

sample width to the right.

2Ć31

Operating Basics

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

Execute Action

Shift right (add zero)

OK EXECUTE

Button

5. Complete the following actions to insert a glitch with a width of 1 sample in

the DATA1 bits.

a. Set DATA1 as the bits that will be the object of the edit.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

Execute Action

Set the block cursor to cover DATA1 using the up and down arrow buttons.

Set scope OK

1 OK

Button

b. Set the glitch width to be 1.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

Move the knob icon to the Width window in the upper left area of the screen by pressing the frontĆpanel CURSOR button once or twice.

Button

ENTER

c. Select invert as the edit operation.

Front Panel

Menu Button Bottom Button PopĆup Menu Side Button

Execute Action

Invert data OK

Button

2Ć32

DG2040 Data Generator

Operating Basics

d. Insert two glitches.

Front Panel

Menu Button Bottom Button Popup Menu Side Button

Move the knob icon to the Cursor window in the upper left of the screen by pressing the

front panel CURSOR button once.

Button

ENTER

EXECUTE

ENTER

EXECUTE

This process inserted glitches at the points for cursor positions 35 and 91. Figure 2-23 shows the pattern edited in Tutorial 2.

Figure 2Ć23: Pattern edited in Tutorial 2

DG2040 Data Generator

2Ć33

Operating Basics

6. Save the edited data on the 3.5 inch floppy disk.

a. Insert a formatted 3.5 inch floppy disk in the drive.

b. Name the new file COUNT2.

Menu Button Bottom Button PopĆup Menu Side Button

File Save Data &

Setup

Clear String

COUNT2 OK

The data in this procedure will be saved in the file COUNT2.PDA.

Front Panel Button

Tutorial 3: Signal Output

Tutorial 3 sets all the settings required for signal output and actually outputs the signals.

1. Set the sampling clock frequency to 500 MHz.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Clock Reference

(Select Int.)

Int FREQ 500

button

MHz

2. Set the signal generation mode to continuous mode.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Run Mode Repeat

button

3. Set the channel CH0 to CH1 output levels to 1 V for the high level and –1 V

for the low level.

2Ć34

DG2040 Data Generator

Operating Basics

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Level Condition

Select channel CH0 by pressing the frontĆpanel up and down arrow buttons.

High 1

Low -1

Set the output levels for channels CH1 in the same manner.

button

ENTER

Follow the steps below to set the delay time for each channel.

4. Set the delays for the output channels CH0 to CH1 to 1 ns. Refer to

Figure 2-24 for the output parameter settings example.

Menu button Bottom button PopĆup menu Side button

Timing Condition

Select channel CH0 by pressing the frontĆpanel up and down arrow buttons.

Delay 1

Set the delays for channels CH1 in the same manner.

Delay Time Setting

Output Voltage

Level Settings

Figure 2Ć24: Output parameter settings

FrontĆpanel button

ENTER

DG2040 Data Generator

Follow the steps below to output the signals and confirm those signals with an oscilloscope.

5. Connect the DG2040 Data Generator outputs to the oscilloscope.

2Ć35

Operating Basics

Connect the CH0 and CH1 on the front-panel to the oscilloscope CH1 and

CH2. This requires two SMA cables and two SMA female-to-BNC male

adapters. Connect two SMA terminations to the CH0

and CH1 outputs on

the DG2040 Data Generator front panel. Refer to Figure 2-25.

DG2040 Data Generator Oscilloscope

CH0

CH1

SMA termination

SMA Cable

CH1

CH2

SMA femaleĆtoĆBNC male adapter

Figure 2Ć25: DG2040 Data Generator and oscilloscope connection

6. Press the START/STOP button on the front-panel.

7. Set up the oscilloscope appropriately and observe the pattern signals on the

oscilloscope screen.

8. Save the state of the settings on the 3.5 inch floppy disk.

a. Insert an IBM-formatted 3.5 inch floppy disk in the drive.

b. Name the new file COUNT3.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

EDIT File Save Data &

Setup

button

2Ć36

Clear String

COUNT3 OK

The data in this procedure is saved to a file named COUNT3.PDA.

DG2040 Data Generator

Operating Basics

Tutorial 4: Creating a

Sequence

Block 1 Block 2 Block 3 Block 4

Block 1 repeats 10 times

Defined in subsequence

SUB 1

SUB 1 repeats 2 times

Tutorial 4 creates four 360-bit blocks and assigns the blocks to sequences, as shown in Figure 2-26.

Block 3 Block 4

Block 3 repeats continually

Figure 2Ć26: Tutorial 4 block sequence

Create the following data patterns for the blocks:

Block 4 repeats 20 times

The sequence repeats Block 3 infinitely. When an event signal is input, the sequence jumps to Block 4.

H Block 1: Binary up-counter pattern H Block 2: Data pattern consisting of all zeros H Block 3: Binary down-counter pattern H Block 4: Data pattern consisting of all ones

1. Clear the data group definitions and pattern data.

Menu button Bottom button PopĆup menu Side button

SETUP Group Assign Reset All bits

Assign

EDIT File New

FrontĆpanel button

DG2040 Data Generator

2Ć37

Operating Basics

2. Set the length of pattern memory (the number of samples) to 1440 points.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Settings Set memory

size

OK 1440

button

ENTER

3. Set the block cursor position and width. This procedure sets a scope of 2

(DATA0 and DATA1) and a width of 360 samples.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Execute Action

Set scope OK

button

2 OK

Move the knob icon to the Width window in the upper left area of the screen using the frontĆpanel CURSOR button.

360

ENTER

4. Divide the data between block 1 (point 0 to 359) and block 2 (point 360 to

719). Use BK2 as the name for block 2.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Move the knob icon to the Cursor window in the upper left area of the screen by pressing the frontĆpanel CURSOR button once or twice.

Block Add block

delimiter here

BK2 OK

Clear String

button

360

ENTER

2Ć38

DG2040 Data Generator

Place a block delimiter here

(to separate the blocks)

Operating Basics

Point No.

. . . . . . . . . . . .

362359 360 361 7190 358

Block 2Block 1

Current Edit Screen

Figure 2Ć27: Block separation

5. Divide the data from point 360 to point 719 between block 2 (360 to 719)

and block 3 (720 to 1079). Use BK3 as the name for block 3. Confirm that the knob icon appears in the Cursor window in the upper left area of the screen. If the icon is not in that window, move it there with the front-panel CURSOR button.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

button

720

ENTER

Block Add block

delimiter here

BK3 OK

Clear String

6. Divide the data from point 720 to point 1079 between block 3 (720 to 1079)

and block 4 (1080 to 1339). Use BK4 as the name for block 4. Confirm that the knob icon appears in the Cursor window in the upper left area of the screen. If the icon is not in that window, move it there with the front-panel CURSOR button.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Block Add block

delimiter here

button

1080

ENTER

DG2040 Data Generator

2Ć39

Operating Basics

FrontĆpanel

Menu button

Side buttonPopĆup menuBottom button

Clear String

BK4 OK

button

7. Change the name for block 1 to BK1. Confirm that the knob icon appears in

the Cursor window in the upper left area of the screen. If the icon is not in

that window, move it there with the front-panel CURSOR button.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

button

ENTER

Block Rename

current block

BK1 OK

Clear String

8. Create block 1 data by creating a binary up-counter data in block 1. First

make sure that the value of the Cursor window in the upper left area of the

screen is 0 and set that value to 0 if it is not already 0. Complete the actions

in the following table.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Execute Action

Binary up counter

OK 1

button

ENTER

EXECUTE

2Ć40

DG2040 Data Generator

Operating Basics

Figure 2Ć28: Creating a binary upĆcounter for block BK1

NOTE. The block 2 data is all zeros. The data can be used as is without editing.

9. Create binary down-counter data in block 3. Confirm that the knob icon appears in the Cursor window in the upper left area of the screen. If the icon is not in that window, move it there with the front-panel CURSOR button.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Execute Action

Binary down counter

OK 1

OK EXECUTE

button

720

ENTER

DG2040 Data Generator

2Ć41

Operating Basics

Figure 2Ć29: Creating a binary downĆcounter for block BK3

10. Create data consisting of all ones in block 4. Confirm that the knob icon appears in the Cursor window in the upper left area of the screen. If the icon is not in that window, move it there with the front-panel CURSOR button.

Menu button Bottom button PopĆup menu Side button

Execute Action

Set data to High

OK EXECUTE

FrontĆpanel button

1080

ENTER

2Ć42

DG2040 Data Generator

Operating Basics

11. Create one subsequence as shown in the example in Figure 2-30

Figure 2Ć30: Sample subsequence

When you call the subsequence, the following outputs are made:

H The pattern in BK1 is output 10 times. H The BK2 pattern is output once. H The BK3 pattern is output once. H The BK4 pattern is output 20 times.

Create a sequence as shown in Figure 2-31 and define each line as a block or subsequence. The lines defined with the subsequence are called and executed when the sequence is executed.

The lines defined with subsequences are highlighted within the BLOCK column. Refer to Figure 2-30.

DG2040 Data Generator

2Ć43

Operating Basics

Figure 2Ć31: Sample sequence

ON ON

The sample sequence in Figure 2-31 is performed as follows:

H Line 0: Wait trigger event and then call the subsequence. H Line 1: Wait trigger event and then call the subsequence. H Line 2: While waiting event signal, the BK1 pattern is repeatedly output.

When the event condition has been satisfied, the process jumps to the line 3.

H Line 3: The BK4 pattern is output. The following two steps create the subsequence:

12. Open the Make Subsequence pop-up menu.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Make Sequence

Special

Edit SubĆ Sequence

New

button

2Ć44

DG2040 Data Generator

Operating Basics

13. Create the lines in the pop-up menu and assign the name SUB1 to the

subsequence.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

Insert

Select the BK1 from the Select block popĆup menu using the frontĆpanel knob.

Repeat 10

With the frontĆpanel down arrow button, advance the line pointer to the next line. See Figure 2Ć32.

Using the same procedures as above, insert BK2, BK3 and BK4 into the line 1, 2 and 3, respectively, and set the repeat count to 20 for the BK4.

button

ENTER

Line Pointer

Figure 2Ć32: Line pointer

Clear String

SUB1 OK

Go Back

DG2040 Data Generator

2Ć45

Operating Basics

Do the following three steps to create the sequence:

14. Create line 0 and line 1 in the sequence.

FrontĆpanel

Menu button Bottom button PopĆup menu Side button

Insert

Select the SUB1 from the Select block and SubĆsequence popĆup menu using the frontĆpanel knob.

Set Enhanced Control

Trig Wait (Set to On)

Go Back

With the frontĆpanel down arrow button, advance the line pointer to the next line.

button

Using above procedures, insert SUB1 into the line 1 and set the Trig Wait.

15. Create line 2 and line 3. Note that you cannot set the jump address (line number) that has not been created. The jump condition is set in step.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

Insert

Select the BK1 from the Select block and SubĆsequence popĆup menu using the frontĆpanel knob.

Set Enhanced Control

Repeat (Set to Infinite)

Go Back

With the frontĆpanel down arrow button, advance the line pointer to the next line.

Using above procedures, insert BK4 into the line 3.

button

2Ć46

DG2040 Data Generator

Operating Basics

16. Create line 3 and then terminate the editing.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

With the frontĆpanel up arrow button, move the line pointer back to the line 2.

Set Enhanced Control

Event Jump (Set to On)

Jump to 3

Go Back

button

ENTER

The following two steps set the trigger and run mode for output.

17. Set the trigger source to external and the trigger interval to off.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

SETUP Trigger Source

(Set to Ext)

Interval

State (Set to Off)

Go Back

button

18. Set the run mode to Enhanced.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

Run Mode Enhanced

button

NOTE. When the run mode is set to Enhanced, the displayed settings in the

ENHANCED columns of the Make Sequence menu become gray. See Figure 2-33.

DG2040 Data Generator

2Ć47

Operating Basics

19. Output the sequence and observe the pattern using an oscilloscope. Refer to Figure 2-25 on page 2-36 for the connections between the DG2040 Data Generator and the oscilloscope.

Press START/STOP button on the front-panel to start the output. The message, Waiting for Trigger, is displayed in the upper right part of the screen.

The first two lines in the sequence wait for a trigger event. Press the FORCE TRIGGER button on the front-panel to generate the trigger event.

The sequence in line 2 outputs the BK1 pattern repeatedly until the event condition is satisfied. Press the STEP/EVENT button on the front-panel to quit the loop and to advance to sequence line 3.

In Enhanced mode, the entire sequence is repeatedly output. So the message Waiting for Trigger is displayed again and again until you press the START/STOP button on the front-panel.

2Ć48

Figure 2Ć33: Sample sequence

20. Exit sequence creation mode and save the data in a file. Name the file SEQ1.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

Insert a formatted 3.5 inch floppy disk into the 3.5 inch floppy disk drive.

File Save Data &

Setup

button

DG2040 Data Generator

Operating Basics

FrontĆpanel

Menu button

Side buttonpopĆup menuBottom button

Clear String

SEQ1 OK

button

The file called SEQ1.PDA is created. If a file of the same name already exists, a message asking if that file should be overwritten will be displayed. Press OK once more if that message is displayed.

Tutorial 5: Controlling

Pattern Edges

The instrument has a function to move the specified pattern edges within the range of "100 ps relative to the original position. You can specify the pattern edge(s) in the DATA0 by using the DATA1 pattern.

In the following procedures, you create the pattern in the DATA0 as shown in Figure 2-34, in which the highlighted edges are controlled and moved.

DATA1

DATA0

10 points 10 points

Figure 2Ć34: Pattern and edges to be controlled in the DATA0

To specify those edges to be controlled, you also create the pattern in the DATA1 as shown in Figure 2-34.

1. Follow the steps below to create a pattern in the DATA0.

DG2040 Data Generator

a. Reset to factory setting.

Menu button Bottom button popĆup menu Side button

UTILITY System Reset to FactoĆ

FrontĆpanel button

2Ć49

Operating Basics

b. Set the clock pattern.

Menu button Bottom button popĆup menu Side button

EDIT Enhanced Action Clock Pattern

Low Data (Set 10)

Select High Data by pressing the frontĆpanel up and down arrow buttons.

High Data (Set 10)

2. Create a pattern in the DATA1.

FrontĆpanel button

Menu button Bottom button Popup menu Side button

Select DATA1 by pressing the front panel up and down arrow buttons.

Execute Action Numeric input OK

OK EXECUTE

Move cursor to point 9.

Move cursor to point 29.

Move cursor to point 39.

Move cursor to point 49.

3. Set the instrument edge control to On.

Menu button Bottom button popĆup menu Side button

APPLICATION Edge Control Edge Ctrl

(Select On.)

Front panel button

FrontĆpanel button

2Ć50

Press EDIT button to display edit screen.

DG2040 Data Generator

Operating Basics

The edges to be controlled are highlighted. Figure 2-35 shows the created patterns and highlighted edges.

Figure 2Ć35: Created pattern and highlighted edges

Follow the steps below to change the edge position:

4. Connect the DG2040 to the oscilloscope. Refer to Figure 2-25 on page 2-36.

5. Press the START/STOP button on the front-panel to start output.

6. Set the trigger to CH2 in the oscilloscope. Adjust the oscilloscope setting to

display the DATA0 pattern output.

7. Change the edge position.

FrontĆpanel

Menu button Bottom button popĆup menu Side button

APPLICATION Edge Control Position Offset

button

8. Change the edge position with the general-purpose knob. Use the oscillo-

scope to verify that the edge was moved.

For example, when an output signal has been input from a function generator (Tektronix AFG310) to the EDGE CONTROL INPUT on the DG2040 front panel, you can continuously change the specified edge position.

DG2040 Data Generator

2Ć51

Operating Basics

Connect SYNC OUT connector on the rear panel

DG2040 Data Generator Oscilloscope

CH0

SMA termination

SMAĂfemaleĆtoĆBNC

male adapter

BNC Cable

SMA Cable

Figure 2Ć36: DG2040 and oscilloscope connection

CH1

CH2

2Ć52

DG2040 Data Generator

Reference

Edit Menu Screen

This section provides the following information:

H Description of the Edit, Setup, Application, and Utility menus. H Procedures for editing pattern data and creating sequences. H Procedures for defining groups, setting up channels, setting operating modes,

and triggers.

H Procedures for setting and saving instrument settings.

This section describes the EDIT menu screen shown in Figure 3-1. Table 3-1 provides a description and page number references.

2 3 4 5

7 8 9

Figure 3Ć1: EDIT menu (timing display)

DG2040 Data Generator

3Ć1

Reference

Table 3Ć1: Edit menu display

Screen Reference

1 Displays the point position of the cursor pointer, and the time

Function Page

from the start of the data. When the knob icon is displayed at the left edge, the cursor can be moved with the general purpose knob.

3Ć1 and 2Ć23

2 The block name. Also the adjacent area is used to display the

position of the current block with respect to the total number of blocks. There is only one block in the example shown in the figure, and currently the block UNNAMED is being displayed.

3 Displays a M to mark the position of the reference. 3Ć1 and 3Ć19

4 The cursor 3Ć1 and 2Ć23

5 Displays the memory size of the block at the cursor position. 3Ć1 and 3Ć19

6 Displays the difference between the reference mark (3) and the

cursor as a number of points and also as a time.

7 Displays the position of the reference mark (3) as a point value

and as a time.

8 The area cursor. The area enclosed by this cursor is the object

of the execute action editing operations. The area is set by the Set scope (vertical) in the Execute Action menu and Width (horizontal) items.

9 Displays the time per point. 3Ć1

10 Displays the total memory size for all blocks. 3Ć1

11 Displays the size of the remaining available memory. 3Ć1

12 A scale which shows point positions. 3Ć1

13 Display area for the pattern data. 3Ć1

3Ć1 and 3Ć28

3Ć1 and 3Ć19

3Ć1 and 2Ć23

3Ć2

14 Describes the current action of the arrow buttons. 3Ć21

15 Displays the value of the data at the cursor position (4). 3Ć1

16 Displays the number of bits in the data bit group. 3Ć1

17 Describes the function of the front panel EXECUTE button.

Pressing the EXECUTE button executes the editing function for the indicated cursor position or area.

18 Indicates the data bits or the data bit groups. Data bits that are

set up to be the object of editing operations are displayed at a higher intensity (bright).

19 Displays the width of the area cursor as a number of points and

as a time.

3Ć32

3Ć1

DG2040 Data Generator

Menu Trees

Reference

Menu trees are shown for the EDIT, SETUP, APPLICATION, and UTILITY menus.

Edit Menu Tree

Figure 3-2 shows the bottom and side or pop-up menus associated with the Edit menu.

MENU Button Bottom Menu Side Menu or popĆup Menu

EDIT

File

Settings

Block

Load Data & Setup

Save Data & Setup

Import Data

Export Data New

Place mark here

Set memory size

Select arrow key function Set view type to timing Set view type to table

Set view type to binary Set view type to numeric Show overview Set numeric view format

Move to block start

Move to block end

Move to next block Move to previous block

Move to block(any) Add block delimiter here Delete current block delimiter Rename current block

Resize current block

Figure 3Ć2: Edit Menu tree

DG2040 Data Generator

3Ć3

Reference

MENU Button Bottom Menu Side Menu or popĆup Menu

EDIT

Execute Action

Set scope

Cut Copy

Paste Ć insert

Paste Ć replace Set data to high

Set data to low

Insert high data

Insert low data

Invert data Mirror vertical

Mirror horizontal

Magnify Numeric input

Shift left (add zero) Shift right (add zero) Shift left

Shift right

Rotate left

Rotate right Binary up counter

Binary down counter Johnson counter

Graycode counter

Enhanced Action

Make Sequence

Figure 3Ć2: Edit Menu tree (cont)

3Ć4

Clock Pattern

Shift Register Generator

Logical Operation

Bit Operation

Serial Code Converter

Insert Delete

Repeat Count Set Enhanced Control

Special

Trig Wait

Event Jump Jump to

Repeat

Delete All Make Simple Sequence

Edit SubĆSequence

DG2040 Data Generator

Reference

Setup Menu Tree

MENU button Bottom menu Side menu

SETUP

Group Assign

Output Condition

Level Condition

Timing Condition

Run Mode

Figure 3-3 shows the bottom and side menus associated with the Setup menu.

Add Group

Delete Group

Rename

Group Bit(s) Config

Reset All bits Assign

Assign Condition

Control Condition

High Low

Delay

Repeat

Single

Step Enhanced

Update

Event Level

Event Enable/Disable

Trigger Slope

Trigger Level

Impedance Source

Interval

Clock

Reference

Int FREQ Ext FREQ

Figure 3Ć3: Setup Menu tree

Application Menu Tree

Figure 3-4 shows the bottom and side menus associated with the Application menu.

MENU button Bottom menu Side menu

APPLICATION

Edge Control

Edge Ctrl

Position Offset

Figure 3Ć4: Application Menu tree

State

Time

DG2040 Data Generator

3Ć5

Reference

Utility Menu Tree

MENU Button Bottom Menu Side Menu or Base Menu

UTILITY

Figure 3-5 shows the bottom and side menus associated with the Utility menu.

Mass Memory Change Directory

Make Directory Rename

Copy or Delete

Special Initialize Media

Display/Hardcopy Display Clock

Hardcopy Format

Clear Message Area

Copy

Delete

Delete All

Catalog Order Lock

Brightness

Dimmer

Port

Figure 3Ć5: Utility Menu tree

System Remote Port

GPIB

Serial Baud rate

Power up Pause

Date/Time

Reset to Factory Security Immediate

Status

Diag

Type

Execute

Configure

Address

Data Bits

Parity

Stop Bits

Handshake

3Ć6

DG2040 Data Generator

Reference

Edit Menu Functions

Table 3-2 lists the functions of the EDIT menu items and the pages where their documentation appears.

Table 3Ć2: EDIT menu functions

Bottom Base or side menu Function Page

File

Settings

Block

Load Data & Setup Loading pattern data and setup parameters 3Ć9

Save Data & Setup Saving pattern data and setup parameters 3Ć9

Import Data Loading pattern data from mass memory 3Ć10

Export Data Writing pattern data to mass memory 3Ć15

New Initialization for data creation 3Ć18

Place mark here Setting the reference mark 3Ć19

Set memory size Setting the memory size 3Ć19

Select arrow key function Setting the operation of the arrow buttons 3Ć20

Set view type to timing

Set view type to table

Set view type to binary

Set view type to numeric

Show overview Setting the pattern data display format

Set numeric view format Setting the numeric view format 3Ć27

Move to block start

Move to block end

Move to next block

Move to previous block

Move to block( any)

Add block delimiter here Delimiting blocks 3Ć29

Delete current block delimiter Combining blocks 3Ć30

Rename current block Changing a block name 3Ć31

Resize current block Changing the size of a block 3Ć31

Setting the pattern data display format 3Ć22

Moving the cursor for the block 3Ć28

DG2040 Data Generator

3Ć7

Reference

Table 3Ć2: EDIT menu functions (Cont.)

Bottom PageFunctionBase or side menu

Execute Action

Enhanced Action

Set scope Setting the scope 3Ć34

Cut Deleting pattern data 3Ć35

Copy Copying pattern data 3Ć35

Paste Ć insert Pasting (inserting) pattern data 3Ć35

Paste Ć replace Pasting (replacing) pattern data 3Ć36

Set data to high Setting pattern data to high 3Ć36

Set data to low Setting pattern data to low 3Ć36

Insert high data Inserting high data 3Ć37

Insert low data Inserting low data 3Ć37

Invert data Inverting data 3Ć37

Mirror vertical Swapping pattern data in the vertical direction 3Ć38

Mirror horizontal Swapping pattern data in the horizontal direction 3Ć39

Magnify Magnifying pattern data 3Ć39

Numeric input Inputting pattern data numerically 3Ć39

Shift left (add zero) or Shift right (add zero)

Shift left or Shift right Shifting pattern data left or right 3Ć41

Shift up (add zero) or Shift down (add zero)

Shift left or Shift right Shifting pattern data left or right 3Ć40

Rotate left or Rotate right Rotating pattern data left or right 3Ć43

Rotate up or Rotate down Rotating pattern data up or down 3Ć43

Binary up counter

Binary down counter

Johnson counter

Graycode counter

Clock Pattern Clock pattern generation 3Ć45

Shift Register Generator Pseudorandom pulse generation 3Ć47

Logical Operation Logical operations between pattern data items 3Ć50

Bit Operation Moving or copying pattern data 3Ć52

Serial Code Converter Serial code data conversion 3Ć53

Shifting pattern data left or right by inserting zeros 3Ć40

Shifting pattern data up or down by inserting zeros 3Ć40

Creating standard pattern data 3Ć44

3Ć8

DG2040 Data Generator

Table 3Ć2: EDIT menu functions (Cont.)

Bottom PageFunctionBase or side menu

Make Sequence

Undo Cancel the latest operation and restore the previous

Insert

Delete 3Ć59

Repeat Count 3Ć59

Set Enhanced Control 3Ć59

Special 3Ć60

Sequence definition

setting

File Menu

This subsection contains information on the bottom menu functions for the Edit Menu.

The File menu saves and loads data between the instruments internal memory and mass memory (3.5 inch floppy disk). When the File bottom menu item is selected, a side menu with Load Data & Setup, Save Data & Setup, Import, Export, and New items is displayed.

Reference

3Ć58

3Ć63

Load Data & Setup

The Load Data & Setup function reads format pattern data, block, group, sequence and setup data into the instruments internal memory from mass memory (3.5 inch floppy disk).

The DG2040 Data Generator can read data created and stored from the DG2000 series. The DG2040 will use the pattern data in the lower 2 bits. Also, the DG2040 Data Generator can read DG2000 series setup information except for those settings that are not common to both platforms.

Submenu

Item

Change Directory Changes the current directory.

Operation. Do the following to load the pattern data and setup parameters.

Bottom button PopĆup menu Side button

Insert a 3.5 inch floppy disk in the floppy disk drive.

File Load Data & Setup

Function

Select the file to be loaded. OK

DG2040 Data Generator

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Reference

Save Data & Setup

Import

The Save Data & Setup functions stores the pattern data, block, group, sequence and setup data from the instruments internal memory to mass memory (3.5 inch floppy disk) in the DG2040 Data Generator format.

Submenu

Item

Clear String Deletes the current displayed string.

Change Directory Changes the current directory.

Operation Do the following to save the pattern data and setup parameters:

Bottom button PopĆup menu Side button

Insert a writeĆenabled 3.5 inch floppy disk in the floppy disk drive.

File Save Data & Setup

Function

Enter the file name for the data to be saved. OK

The Import function loads the pattern data from mass memory (3.5 inch floppy disk) into pattern memory. The DG2040 can read the following data formats:

H Tektronix TDS series waveform data (file extension: .WFM) H Tektronix TLS series group data (file extension: .GRP) H Tektronix AWG2000 series waveform data (file extension: .WFM) H Tektronix DG2000-Series and DG2040 Data Generator waveform data (file

extension: .PDA)

H CSV format data (file extension: .CSV). Refer to page 3-13 for instructions

regarding formatting data in a CSV format.

Pop-up menu parameter settings are used to specify the read-in method.

Operation. Do the following to import pattern data from mass memory.

Bottom button PopĆup menu Side button

Insert the 3.5 inch floppy disk in the drive.

File Import Data

Select the file to be read in. OK

Change the parameters as required. OK

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DG2040 Data Generator

Reference

PopĆup Menu. Figure 3-6 shows the data read-in configuration window. The parameters that appear in this window differ depending on which data format was read in.

Figure 3Ć6: Import Configuration Menu (File format: AWG2000 series waveform file)

Table 3-3 describes the input parameters.

Table 3Ć3: Import parameters

Parameter Function

Destination Sets the place where the readĆin data is to be written. Either Pattern

memory or the Paste buffer can be selected. If data is read into the paste buffer, data can be pasted to the data bit specified by the Paste item in the Execute Action menu.

Read Point(s) Sets the number of data points to be read. Data in excess of the

specified memory size cannot be read in.

Source Start Specifies the starting position from which the data is read in from the

file.

Source MSB Specifies the position of the MSB from which data in the file will be

read.

Dest Start Specifies the position which data is read in when pattern memory is the

destination.

Dest MSB Specifies the position of the MSB to which data will be written when

pattern memory is the destination.

DG2040 Data Generator

Read type Sets the data readĆin method when pattern memory is the destination.

Either Insert or Overwrite can be selected.

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Reference

Table 3Ć3: Import parameters (Cont.)

Parameter Function

Convert to Bin When this setting is set to ON, the waveform is compared to a

threshold level and the data is converted to binary. RP binary data from the Tektronix TDS and TLS series products are read in as RI data. The data cannot be converted to binary data if it is left in the RP state.

Threshold Sets the threshold level used to convert readĆin data to binary when the

Convert to Bin parameter is set to ON.

With Marker Data Sets whether or not marker data is read, in addition to waveform data,

for Tektronix AWG2000 series waveform file format data.

Figures 3-7 and 3-8 show the data write operations in terms of point positions and data bit positions when pattern memory is the write destination.

Number of data

Start Position

(Source Start)

points read

(Read Points)

ReadĆin Data

(Read type:Overwrite)

Pattern Memory

Initial position where

data is written

(Dest Start)

Figure 3Ć7: Data write in terms of point positions

ReadĆin Method

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DG2040 Data Generator

Reference

WithĂMarkerĂData:ĂON

ReadĆin Data

(AWG2000 Series

Waveform Data)

PatternMemory

Data Write MSB Setting

(Dest MSB)

WithĂMarkerĂData:ĂOFF

ReadĆin Data

(AWG2000 Series

Waveform Data)

PatternMemory

Data Write MSB Setting

(Dest MSB)

Data Read MSB Setting

(Source MSB)

D11Mk1

Mk2 D10 D5 D4 D3

Data Read MSB Setting

(Source MSB)

D11Mk1

Mk2 D10 D5 D4 D3

CSV Data Format

Figure 3Ć8: Data write in terms of data bit positions

The DG2040 Data Generator can import vector data from the built-in floppy drive using a simple ASCII Comma Separated Variable (CSV) format. This section defines how the data is formatted for importing into the DG2040 Data Generator. The CSV format is defined as follows:

<1DB0><Comma><1DB1><Comma>.....<1DBx><CR>

БББББББББББББ

<2DB0><Comma><2DB1><Comma>.....<2DBx><CR>

... ... ... ... ...

... ...

БББББББББББББ

БББББББББББББ

! The number of bits (x) defines

ББББББББ

the width of the pattern

! Second word

ББББББББ

! The number of lines (y) defines the depth of the pattern

ББББББББ

When formatting data in the CSV format, note the following: H Each data byte is defined by the ASCII character: zero <0>, ASCII 48 or one

<1>, ASCII 49

DG2040 Data Generator

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Reference

H Each data byte is separated by the ASCII character: comma <,> (ASCII 44),

space (ASCII 32), or TAB (ASCII 9)

H Each line is terminated with the ASCII character: carriage return <CR>,

ASCII 13

H The number of bits in a line defines the word width. For example, if the first

line consists of pattern: 1,0,1,1 then the word width is 4-bits wide

H For Importing, the specified 2 bit wide data can be imported. For Exporting ,

the specified one bit or two bits can be exported to a file.

H The number of lines in the file defines the number of words in the pattern.

For example, 10 lines defines 10 data words.

H The DG2040 Data Generator CSV format file is a DOS-compatible file

formatted as defined above with a .CSV file extension.

CSV Format Example. To export a 2-bit pattern that is 3 words long, create the following data, as an example, and save it using filename: PATTERN.CSV. This can be created using a spreadsheet program, a text editor, or a custom filter program to convert data from one format to another.

1,1<CR> 0,1<CR> 0,0<CR>

NOTE. Bit pattern data must have at least 360 words. The above pattern data cannot be read into the DG2040 Data Generator. Note that this is a simple example.

Once the data words have been imported, parameters including clock rate, output levels and interchannel timing need to be set since the CSV format does not transfer this information. After all operating parameters have been set, the entire pattern can be stored on a floppy for nonvolatile storage. The entire pattern will fit on one floppy since the DG2040 Data Generator uses an instrument specific binary format that is more compact than ASCII format.

Importing Large Data Files. It may be possible to create a large CSV file. Depending on what kind of operation is currently performed, the DG2040 Data Generator may not allocate the internal work space for creating CSV format data larger than 128 K words. An extreme example is a 2-bit wide word pattern that has 262144 (256 K) words. For the data to fit into the work space and onto a 3.5 inch floppy disk capacity, the pattern must be segmented into 128 K (131072 words) blocks and saved to a separate 3.5 inch floppy disks. To import the data do the following:

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DG2040 Data Generator

Reference

1. Insert the 3.5 inch floppy disk with the first 128 K words into the drive.

2. Select File ! Import Data and select a file to be imported.

3. Press the OK button. The Import Configuration pop-up menu appears. This

menu allows you to configure how the data will be imported. In this example, only the Dest Start point will be modified.

4. Set the Dest Start point to zero for the first 3.5 inch floppy disk.

5. Set the Dest Start point to 65536 for the second 3.5 inch floppy disk.

6. Set the Dest Start point to 131072 for the third 3.5 inch floppy disk.

7. Repeat the steps above changing the Dest Start point until the data from the

last 3.5 inch floppy disk is read.

Once the data words have been imported, parameters including clock rate, output levels, and interchange timing need to be set, since the CSV format does not transfer this information.

Export

The Export function writes pattern data to mass memory (3.5 inch floppy disk). Data is written either as CSV data or as Tektronix AWG2000-Series waveform data. The write method is specified by setting a parameter in a pop-up menu.

NOTE. Icon data and hardware setup data are not saved in the output AWG2000 Series waveform data. When this data is read in to an AWG2000 Series instrument, default setup data will be added. PCs and some other systems may not be able to read this data directly.

Operation. Do the following to write pattern data to mass memory.

Bottom button PopĆup menu Side button

Insert a writeĆenabled 3.5 inch floppy disk in the floppy disk drive.

File Export Data

Select the format of the data to be written (either CSV data or AWG2000s Waveform data).

Enter the file name for the data to be written. OK

Change the parameters as required. OK

DG2040 Data Generator

3Ć15

Reference

Pattern data will be written for

bits for which this indicator is on.

PopĆup Menu. Figure 3-9 shows the configuration windows for the two formats.

CSV Format

Figure 3Ć9: The Export Config menu

When CSV format is selected, the instrument displays a menu for selecting which bits should be written to the file, delimiter symbols, and other parameters. Table 3-4 describes the parameter items that are set using this menu.

AWG2000 Series Format

Table 3Ć4: Export parameters

Parameter Function

Export Data Bit Specifies the data bits to be written to the pattern data. Bits for which

this indicator is on are written. Bits can be selected using the general purpose knob, and the on/off state can be changed with the left and right arrow buttons. Consecutive bits can be turned on or off using the 1 and 0 numeric keys.

Column separator Sets the line separator symbol. The delimiter symbols are usually used

as follows: CR+LF: MSĆDOS and Windows LF: UNIX CR: Macintosh

3Ć16

Data separator Sets the interbit delimiter. Comma, space, or tab can be selected for this

parameter. Comma is the most common setting.

From This field is valid when Entered is specified for the Region in the

submenu. It specifies the starting position for the data written.

Size This field is valid when Entered is specified for the Region in the

submenu. It specifies the number of data points written.

DG2040 Data Generator

Reference

When the AWG2000 Series format is selected, a menu that allocates data for a total of 14 bits, MARKER 1 and 2 and DATA00 to DATA11, is displayed. Use the arrow buttons to select the AWG2000 Series bit and use the general purpose knob to allocate the DG2040 Data Generator bit. Allocate all bits to be written by repeating this operation.

Submenu

Item

Set All Data bits (CSV only)

Clear All Data bits (CSV only)

Region When this setting is set to All, the whole data area is written, and when

Function

Sets the data bit write settings for all data bits.

Clears the data bit write settings for all data bits.

it is set to Entered, the data in the area specified by From and Size is written.

Exporting Large Data. The DG2040 Data Generator’s internal memory capacity can not export a 2-bit wide pattern data in CSV format that is larger than 131072 (128 K) words. The data that is to be written onto a 3.5 inch floppy disk must have the pattern segmented into 128 K (131072 words) blocks and saved to separate 3.5 inch floppy disks.

To import large data files, do the following:

1. Insert a 3.5 inch floppy disk into the drive.

2. Select the File ! Export Data to display Export Data Format pop-up menu.

3. Select CSV data and then press the OK side button.

DG2040 Data Generator

4. Enter a file name and then press the OK side button. The Export Config

(CSV) pop-up menu appears. This menu allows you to configure how the data will be exported. In this example, only the Size and From will be modified.

5. Confirm that the Region is set to Entered. If it is not set correctly, press the Region side button to set to Entered.

6. Enter 0 into the From and 131072 into the Size, and then press the OK side

button.

7. Repeat the procedures from Step 2 through Step 6, changing the file name and incrementing From point by 131072 until all pattern data are stored into

3.5 inch floppy disks. Note that two blocks of 32 K word pattern data in the CSV format can be stored in a 3.5-inch 2HD floppy disk.

3Ć17

Reference

Settings Menu

New

The New function initializes all data, including the pattern data, the block divisions, and the sequence data to the default state.

Operation. Do the following to initialize for pattern data creation:.

Bottom button PopĆup menu Side button

File New

The settings menu sets all the EDIT menu internal settings and supports the following operations:

H Setting the reference mark H Setting the reference group H Setting the memory size H Setting the arrow button operating mode H Setting the display type (format)

The item to be set is selected from the pop-up list using the general purpose knob. Figure 3-10 shows the pop-up menu.

Figure 3Ć10: Settings popĆup menu

3Ć18

DG2040 Data Generator

Tektronix DG2040 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY

General Safety Summary

Preface

Related Manuals

Conventions

Contacting Tektronix

Getting Started

Product Description

Initial Inspection

Power Cord Options

Accessories

Options

Installation

Repackaging for Shipment

Operating Basics

Controls, Connectors, and Display

Theory of Operation

Data Structure Overview

Operating Modes Overview

Basic Menu Operations

Tutorials

Reference

Edit Menu Screen

Menu Trees

Edit Menu Functions

File Menu