User Manual
TDSCPM1
Communications Pulse Measurements Application
071-0605-00
This document supports software version 1.0.0
and above.
Warning
The servicing instructions are for use by
qualified personnel only. To avoid personal
injury, do not perform any servicing unless you
are qualified to do so. Refer to all safety
summaries prior to performing service.
Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its suppliers and
are protected by United States copyright laws and international treaty provisions.
Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c)(1)(ii) of the
Rights in T echnical Data and Computer Software clause at DFARS 252.227-7013, or subparagraphs (c)(1) and (2) of the
Commercial Computer Software – Restricted Rights clause at F AR 52.227-19, as applicable.
T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
T ektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000
TEKTRONIX and TEK are registered trademarks of T ektronix, Inc.
WARRANTY
T ektronix warrants that the media on which this software product is furnished and the encoding of the programs on the media
will be free from defects in materials and workmanship for a period of three (3) months from the date of shipment. If a
medium or encoding proves defective during the warranty period, T ektronix will provide a replacement in exchange for the
defective medium. Except as to the media on which this software product is furnished, this software product is provided “as
is” without warranty of any kind, either express or implied. T ektronix does not warrant that the functions contained in this
software product will meet Customer’s requirements or that the operation of the programs will be uninterrupted or error-free.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period. If T ektronix is unable to provide a replacement that is free from defects in materials and workmanship
within a reasonable time thereafter, Customer may terminate the license for this software product and return this software
product and any associated materials for credit or refund.
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
REPLACE DEFECTIVE MEDIA OR REFUND CUSTOMER’S PAYMENT 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.
Table of Contents
Getting Started
Operating Basics
General Safety Summary
Preface
Related Documentation vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conventions viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contacting T ektronix viii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product Description 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compatibility 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Requirements and Restrictions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Updates Through a Web Browser 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Application 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to a System Under T est 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Basics 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Menu Structure 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main and Side Menus 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Common Menu Items 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Utility Menus 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Basic Oscilloscope Functions 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using Local Help 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Returning to the Application 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the Display 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Up the Application 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Communications Standards 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Rates 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ests 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup Parameters 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ITU-T G.703 Data Rates and Selections 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANSI T1.102 Data Rates and Selections 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
T aking Measurements 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving the Results to a Data Log File 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Log File Format 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Importing a Data Log File to a Personal Computer 16. . . . . . . . . . . . . . . . . . . . . . .
Viewing Data 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving and Recalling Setups 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving a Setup 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recalling a Setup 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exiting the Application 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tutorial 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to a Communications Signal 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting Up the Oscilloscope 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
v..........................................
vii.........................................................
TDSCPM1 Communications Pulse Measurements Application User Manual
i
Table of Contents
Reference
Starting the Application 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T aking Measurements 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Saving the Results to a Data Log File 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Viewing the RESULTS.CSV File (Data Log) 28. . . . . . . . . . . . . . . . . . . . . . . . . . .
Stopping the Tutorial 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Returning to the Tutorial 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GPIB Program Example 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Guidelines 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Program Example 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Menu Structure 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parameters Reference 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Menu 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Rate Menu 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Menu 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setup Menu 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logging Menu 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Menu 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Utility Menus 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendices
Appendix A: Measurement Algorithms 43. . . . . . . . . . . . . . . . . . . . . . . .
Oscilloscope Setup Guidelines 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T est Methodology 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurements 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Parameters 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Amplitude 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Peak-Peak 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Imbalance Variation 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Imbalance Amp Ratio 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Symmetry 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Zero Level 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spectral Power 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Narrow Band 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wide Band 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask Time Base Adj. Parameter 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask Offset Adj. Parameter 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask Margin Parameter 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask Symbol Parameter 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask Timebase Parameter 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Max. Output Mask Parameter 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mask T ype Parameter 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix B: GPIB Command Syntax 51. . . . . . . . . . . . . . . . . . . . . . . . . .
VARIABLE:VALUE TDS COMMAND 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index
ii
TDSCPM1 Communications Pulse Measurements Application User Manual
List of Figures
Table of Contents
Figure 1: TDSCPM1 Communications Pulse Measurements
Application 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2: Connecting to the SUT 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3: Returning to the application 7. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4: Example of a pulse-mask pattern with a communications
waveform, the Results readout, and a RESULTS.CSV file 17. . . . . .
Figure 5: Starting the application 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6: TDSCPM1 application initial display 23. . . . . . . . . . . . . . . . . .
Figure 7: ITU-T G.703 standard and E1 Coax data rate selected 24. . .
Figure 8: An E1 2.048 Mb/s Coax Pair pulse-mask pattern,
communications waveform, and Results readout 25. . . . . . . . . . . . .
Figure 9: Logging menu 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 10: Path to the RESULTS.CSV file on the hard drive 27. . . . . . .
Figure 11: Copying the RESULTS.CSV file to a floppy disk 27. . . . . . .
Figure 12: Data in a RESULTS.CSV file viewed in a spreadsheet
program 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 13: Application-specific menu structure 35. . . . . . . . . . . . . . . . . .
Figure 14: Control and Utility menus structures 36. . . . . . . . . . . . . . . . .
TDSCPM1 Communications Pulse Measurements Application User Manual
iii
Table of Contents
List of Tables
Table 1: Compatible products 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 2: Common menu items 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3: Utility menus 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 4: Display Options menu selections 7. . . . . . . . . . . . . . . . . . . . . .
Table 5: Data Rate menu selections for the ITU-T G.703
standard 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6: Data Rate menu selections for the ANSI T1.102
standard 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 7: Test menu selections 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 8: Setup menu parameters 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 9: ITU-T G.703 data rates and tests 12. . . . . . . . . . . . . . . . . . . . . .
Table 10: ITU-T G.703 data rates and Mask setup parameters 12. . . .
Table 11: ANSI T1.102 data rates and tests 13. . . . . . . . . . . . . . . . . . . . .
Table 12: ANSI T1.102 data rates and Mask setup parameters 13. . . . .
Table 13: Control menu selections 14. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 14: Logging menu selections 15. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 15: Setup menu parameters 39. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 16: Logging menu parameters 40. . . . . . . . . . . . . . . . . . . . . . . . . .
Table 17: Control menu parameters 41. . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 18: Utility menus and parameters 41. . . . . . . . . . . . . . . . . . . . . . .
Table 19: Mask margin limits 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 20: VARIABLE:VALUE TDS COMMAND arguments
and queries 52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 21: Measurement results queries 53. . . . . . . . . . . . . . . . . . . . . . . .
iv
TDSCPM1 Communications Pulse Measurements Application User Manual
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.
While using this product, you may need to access other parts of the system. Read
the General Safety Summary in other system manuals for warnings and cautions
related to operating the system.
Connect and Disconnect Properly . Connect the probe output to the measurement
instrument before connecting the probe to the circuit under test. Disconnect the
probe input and the probe ground from the circuit under test before disconnecting
the probe from the measurement instrument.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Symbols and Terms
T erms in this Manual. This term may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
TDSCPM1 Communications Pulse Measurements Application User Manual
v
General Safety Summary
vi
TDSCPM1 Communications Pulse Measurements Application User Manual
Preface
This manual contains operating information for the TDSCPM1 Communications
Pulse Measurements Application. The manual consists of the following chapters:
H
The Getting Started chapter briefly describes the TDSCPM1 Communications Pulse Measurements Application, lists oscilloscope compatibility, and
provides installation instructions.
H
The Operating Basics chapter covers basic operating principles of the
application and includes a tutorial that teaches you how to set up the
application to acquire a waveform, take measurements, and view the results.
To show you how to operate the application using GPIB commands, this
chapter includes a simple GPIB program.
H
The Reference chapter includes a diagram of the menu structure and
descriptions of parameters.
H
The Measurement Algorithms appendix contains information on measurement guidelines and on how the application takes the measurements.
H
The GPIB Command Syntax appendix contains a list of arguments and values
that you can use with the GPIB commands and their associated parameters.
Related Documentation
The user manual for your oscilloscope provides general information on how to
operate the oscilloscope.
Programmer information in the online help for your TDS500D, TDS700C, or
TDS700D oscilloscope provides details on how to use GPIB commands to
control the oscilloscope. You can also download the tdsprogm.zip file (online
help) with examples from the www.Tektronix.com web site. Refer to Updates
Through a Web Browser on page 2 for information on how to download the file.
The ITU-T Recommendation G.704(07/95), General Aspects of Digital Transmis-
sion Systems document provides information on the ITU-T G.703 standard.
The American National Standard for Telecommunications – Digital Hierarchy –
Electrical Interfaces document provides information on the ANSI T1.102
standard.
TDSCPM1 Communications Pulse Measurements Application User Manual
vii
Preface
Conventions
Contacting Tektronix
This manual uses the following conventions:
H
This manual refers to the TDSCPM1 Communications Pulse Measurements
Application as the TDSCPM1 application or as the application.
H
When steps require that you make a sequence of selections using front-panel
controls and menu buttons, an arrow ( ➞
front panel button and a menu, or between menus. Names that are for a main
menu or side menu item are clearly indicated: Press VERTICAL MENU ➞
Coupling (main) ➞ DC (side) ➞ Bandwidth (main) ➞ 250 MHz (side).
) marks each transition between a
Product
support
Service
support
For other
information
To write us Tektronix, Inc.
Web site www.Tektronix.com
For questions about using Tektronix measurement products,
call toll free in North America:
1-800-TEK-WIDE (1-800-835-9433 ext. 2400)
6:00 a.m. – 5:00 p.m. Pacific time
Or contact us by e-mail:
tm_app_supp@tek.com
For product support outside of North America, contact your
local Tektronix distributor or sales office.
Tektronix offers extended warranty and calibration programs
as options on many products. Contact your local Tektronix
distributor or sales office.
For a listing of worldwide service centers, visit our web site.
In North America:
1-800-TEK-WIDE (1-800-835-9433)
An operator will direct your call.
P.O. Box 1000
Wilsonville, OR 97070-1000
USA
viii
TDSCPM1 Communications Pulse Measurements Application User Manual
Getting Started
Product Description
The TDSCPM1 Communications Pulse Measurements Application is a
Java-based application that enhances basic capabilities of Tektronix oscilloscopes with Option 2C (Communications Signal Analyzer package).
The application provides pulse- and eye-mask pattern, spectral power, pulse
amplitude, and pulse balance testing for data rates defined in the ITU-T G.703
and ANSI T1.102 communications standards.
Figure 1 shows an example of a pulse-mask pattern, a communications signal,
and the Results readout.
Figure 1: TDSCPM1 Communications Pulse Measurements Application
Compatibility
Table 1 lists the minimum Tektronix product requirements needed to operate the
Communications Pulse Measurements Application.
T able 1: Compatible products
Oscilloscope Firmware Required options
TDS500D V 6.4e and up Option 2C and Option HD (hard disk drive) or
Option 2C and Option 2M (hard disk drive + 8 MB record)
TDS700D V 6.4e and up Option 2C and Option HD (hard disk drive) or
Option 2C and Option 2M (hard disk drive + 8 MB record)
TDS700C. number
B020100 and up
TDSCPM1 Communications Pulse Measurements Application User Manual
V 6.4e and up Option 2C and Option HD (hard disk drive) or
Option 2C and Option 2M (hard disk drive + 8 MB record)
1
Product Description
For a current list of compatible oscilloscopes, check the Tektronix, Inc. web site
in the Software and Drivers category.
Requirements and Restrictions
The TDS Run-Time Environment V1.2.0 and above must be installed on the
oscilloscope to operate the TDSCPM1 application and use the GPIB commands.
Updates Through a Web Browser
You can find information about this and other applications at the Tektronix, Inc.
web site, www.Tektronix.com/Measurement/Support/scopes/ in the Software and
Drivers category. Check this site for application updates that you can download
and for other free applications.
To install an application update, you will need to download it from the Tektronix
ftp site to a hard disk, copy it to a blank DOS-formatted floppy disk, and then
install it on your oscilloscope.
Optional Accessories
Accessories
NOTE. More information about changes to the application or installation is in a
Readme.txt file on the ftp site. You should read it before you continue.
To copy an application from a web browser, follow these steps:
1. Access the ftp site at ftp://ftp.tek.com/mbd/support/00-index.html#1.
2. Scroll through the files to the application that you want, select the file, and
download it to your hard disk drive. If necessary, unzip the file.
3. Copy the application from the hard disk to a blank, DOS-formatted floppy
disk.
4. Follow the Installing the Application procedure on page 3.
The AFTDS Differential Signal Adapter and the AMT75 75/50W Adapter (5x)
are accessories that you can use with this product. Information on these electrical
communication adapters are included with Option 2C.
There are no standard accessories for this product other than this manual.
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TDSCPM1 Communications Pulse Measurements Application User Manual
Installation
The TDSCPM1 floppy disk contains the Communications Pulse Measurements
Application. You can download updates, if any, from the Tektronix ftp site
through a web browser.
NOTE. To operate the TDSCPM1 application, the TDS Run-Time Environment
V1.2.0 or above must be installed on your oscilloscope.
Installing the Application
To install the application from the floppy disk to your oscilloscope, follow these
steps:
1. Power off the oscilloscope.
NOTE. Additional information about the application or installation is located in a
Readme.txt file on the floppy disk. You should insert the floppy disk into a
DOS-based personal computer and read the Readme.txt file before you continue.
If you are updating the application, the Readme.txt file on the Tektronix ftp site
supercedes the Readme.txt file on the TDSCPM1 floppy disk.
2. Insert the disk in the floppy disk drive, and power on the oscilloscope.
NOTE. To verify that the TDS Run-Time Environment V1.2.0 or above is installed,
watch for the abbreviated name, RTE, and version number to appear at the top of
the display when you power on the oscilloscope. If they do not appear, contact
your local Tektronix sales office.
After performing the power-up selftest, the oscilloscope automatically begins the
installation procedure.
As the application loads from the disk, the oscilloscope displays a clock icon to
indicate that it is busy. Also, the floppy disk drive LED is on, indicating activity.
If the clock icon continues to display after the floppy disk LED has gone out, a
problem has occurred with the installation. Repeat the above procedure. If the
problem persists, contact your Tektronix representative.
When the installation is complete, an Installation Complete message displays.
TDSCPM1 Communications Pulse Measurements Application User Manual
3
Installation
3. Remove the floppy disk, and cycle the power to the oscilloscope.
Connecting to a System Under Test
You can use an AFTDS or AMT75 electrical communication adapter to connect
between your System Under Test (SUT) and the oscilloscope. These adapters
reduce the output signal from 75 ohms to 50 ohms which is expected by the
oscilloscope.
To connect the electrical communication adapter between the SUT and the
oscilloscope, refer to Figure 2 and follow these steps:
WARNING. To avoid electric shock, you must ensure that power is removed from
the SUT before attaching a probe to it. Do not touch exposed conductors except
with the properly rated probe tips. Refer to the probe manual for proper use.
1. Power off the SUT.
2. Connect the AFTDS or AMT75 electrical communication adapter to CH 1 of
the oscilloscope.
3. Connect the electrical communication adapter to the appropriate communica-
tion signal in the SUT.
TDS Oscilloscope
CH1
AFTDS or AMT75 electrical
communication adapter
SUT, communications
signal source
Figure 2: Connecting to the SUT
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TDSCPM1 Communications Pulse Measurements Application User Manual
Operating Basics
Operating Basics
This section contains information on the following topics and tasks:
H
Application menu structure
H
Using basic oscilloscope functions
H
Configuring the display
H
Setting up the application
H
Taking measurements
H
Storing the results to a data log file
H
Importing a data log file into a personal computer
H
Viewing the results
H
Saving and recalling setups
H
Exiting the application
Application Menu Structure
There are two types of menus in the application menu structure: main menus and
side menus. Some side menus contain common menu items as shown in Table 2.
Main and Side Menus
The main menu names appear in the bottom of the display and the side menu
names appear on the right side of the display. To see the complete application
menu structure, refer to Figure 13 on page 35.
When you press the front-panel button associated with a main menu, the side
menu changes. In many cases, when you press a side menu, new side menu items
appear. As an example, the next figure shows you how to access the Help
selections through the main Utility menu and the Help side menu.
Main menu Side menu Side menu item
Utility
Help
First Page
Next Page
Previous Page
Last Page
Quit Help
TDSCPM1 Communications Pulse Measurements Application User Manual
5
Operating Basics
Common Menu Items
Utility Menus
Table 2 lists common side menu items.
T able 2: Common menu items
Menu item Description
Cancel Cancels the message being displayed
Done Indicates that you are through making changes to that set of side menus; the
application returns to the previous menu
OK Confirms an action
Table 3 lists the Utility menus.
T able 3: Utility menus
Utility name Description
Help Accesses the online help pages and displays useful information on the
application
Exit Exits the application
Save/Recall Setup Accesses the save and the recall menus for application setups
Display Options Accesses other menus where you can change display settings, such as
Using Basic Oscilloscope Functions
You can use the Utility menu to access help information about the application.
You can also use other oscilloscope functions and easily return to the application.
Using Local Help
The application includes local help information about the measurements modes,
with some explanation of the individual controls.
To display the local help, follow these steps:
1. Press Utility (main) ➞ Help (side).
2. Use the side menu buttons to navigate through the help.
whether the dialog box is opaque or transparent
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TDSCPM1 Communications Pulse Measurements Application User Manual
Operating Basics
Returning to the
Application
Configuring the Display
You can easily switch between the TDSCPM1 application and other oscilloscope
functions.
To access other oscilloscope functions, press the desired front-panel control. To
return to the application, push the SHIFT and then the APPLICATION frontpanel menu buttons as shown in Figure 3.
Push the SHIFT and then the APPLICATION button to return to the application.
Figure 3: Returning to the application
You can change how dialog boxes appear on your oscilloscope, as well as the
color of waveforms. The next figure shows how to access the Display Options
menu and Table 4 lists the options with a brief description of each.
Main menu Side menu Side menu item
Utility Display Options
Dialog Box
Box Style
Color Theme
Done
T able 4: Display Options menu selections
Option Description
Dialog Box
Box Style Selects the style of dialog boxes to be Opaque or Transparent
Color Theme Selects a set of colors for waveforms and dialog boxes; the application
Makes dialog boxes visible or invisible
offers seven color themes
TDSCPM1 Communications Pulse Measurements Application User Manual
7
Operating Basics
Setting Up the Application
You can set up the application to take measurements for data rates defined in the
ITU-T G.703 and ANSI T1.102 communications standards, and to display the
results or save them to a data log file.
Communications
Standards
The next figure shows how to access the selections in the Standard menu and the
corresponding selections in the Data Rate menu.
Main menu Side menus
Standard
ITU
ANSI
Main menu
Data Rate
Data Rate
Side menu items
E1 2.048 Mb/s Coax Pair
E1 2.048 Mb/s Sym Pair
E2 8.448 Mb/s
E3 34.368 Mb/s
E4 139.26 Mb/s
Old DS1 Rate 1.544 Mb/s
DS1 Rate 1.544 Mb/s
DS2 Rate 6.312 Mb/s
Old DS3 Rate 44.736 Mb/s
DS3 Rate 44.736 Mb/s
STM-1E 155.52 Mb/s
DS1 1.544 Mb/s
DS1A 2.048 Mb/s
DS1C 3.152 Mb/s
DS2 6.312 Mb/s
DS3 44.736 Mb/s
DS4NA 139.26 Mb/s
STS-1 51.840 Mb/s
STS-3 155.52 Mb/s
Data Rates
The previous figure shows how to access selections in the Data Rate menu.
Table 5 lists the data rate selections for the ITU-T G.703 standard and contains
references within the standard where you can find complete descriptions of each.
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TDSCPM1 Communications Pulse Measurements Application User Manual
Operating Basics
T able 5: Data Rate menu selections for the ITU-T G.703 standard
Selection Description*
E1 2.048 Mb/s Coax Pair Signal defined in Section 9, Table 7, and Figure 15 medium,
75 Ohm coaxial pair
E1 2.048 Mb/s Sym Pair Signal defined in Section 9, Table 7, and Figure 16 medium,
120 Ohm symmetrical pair
E2 8.448 Mb/s Signal defined in Section 10, Table 8, and Figure 16
E3 34.368 Mb/s Signal defined in Section 11, Table 9, and Figure 17
E4 139.26 Mb/s Signal defined in Section 12, Table 10, Figure 19, and Figure 20
Old DS1 Rate 1.544 Mb/s** Signal defined in Section 2, Table 4, and Figure 10
DS1 Rate 1.544 Mb/s Signal defined in Section 5, Table 4, and Figure 10
DS2 Rate 6.312 Mb/s Signal defined in Section 6, Table 5, Figure 1 1, and Figure 12
Old DS3 Rate 44.736 Mb/s** Signal defined in Section 5, and Figure 14
DS3 Rate 44.736 Mb/s Signal defined in Section 8, Table 6, and Figure 14
STM-1E 155.52 Mb/s Signal defined in Section 15, Table 12, Figure 22, and Figure 23
* Found in ITU-T G.703, the ITU-T Recommendation G.704 (07/95), General Aspects of
Digital Transmission Systems printed in October of 1998
** Found in ITU-T G.703 printed in 1991
Table 6 lists the data rate selections for the ANSI T1.102 standard and contains
references within the standard where you can find complete descriptions of each.
T able 6: Data Rate menu selections for the ANSI T1.102 standard
Selection Description*
DSI 1.544 Mb/s Signal defined in Section 6.1, Table 1, and Figure 1
DSIA 2.048 Mb/s Signal defined in Section 7.1, Table 8, and Figure 11
DS1C 3.152 Mb/s Signal defined in Section 6.2, Table 2, and Figure 2
DS2 6.312 Mb/s Signal defined in Section 6.3, Table 3, and Figure 3
DS3 44.736 Mb/s Signal defined in Section 6.4, Table 4, and Figure 4
DS4NA 139.26 Mb/s Signal defined in Section 6.6, Table 6, Figure 7, and Figure 8
STS-1 51.840 Mb/s Signal defined in Section 6.5, Table 5, and Figure 5
STS-3 155.52 Mb/s Signal defined in Section 6.7, Table 7, Figure 9, and Figure 10
* Found in ANSI T1.102-1993, the American National Standard for Telecommunications –
Digital Hierarchy – Electrical Interfaces
TDSCPM1 Communications Pulse Measurements Application User Manual
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