User manual TEKTRONIX TDS 600B

User Manual TDS 500D, TDS 600B & TDS 700D Digitizing Oscilloscopes 071-0130-03 This document applies for firmware version 1.0 and above. Copyright E 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 Technical 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 FAR 52.227-19, as applicable. Tektronix 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. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070­1000 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. FastFrameT, FlexFormatT, DPXT, and InstaVuT are trademarks of Tektronix, Inc. WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If any such product proves defective during this warranty period, Tektronix, 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 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix 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. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair damage resulting from improper use or connection to incompatible equipment; or c) 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 WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX' RESPONSIBILITY TO REPAIR 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. Table of Contents General Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Default Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Model References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix xi xi xii xii xii Getting Started Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Differences by Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Product Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­1 1­3 1­4 Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Putting into Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­5 1­5 1­6 Operating Basics Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Interface Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tutorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting Up for the Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Example 1: Displaying a Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Example 2: Displaying Multiple Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . Example 3: Taking Automated Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . Example 4: Saving Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2­1 2­3 2­9 2­9 2­13 2­17 2­22 2­28 Reference Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Acquiring and Displaying Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . Coupling Waveforms to the Oscilloscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting up Automatically: Autoset and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . Selecting Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Scaling and Positioning Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Choosing an Acquisition Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customizing the Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Customizing the Display Color . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Zooming on Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using DPO Acquisition Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using FastFrameT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­1 3­5 3­5 3­9 3­12 3­15 3­27 3­40 3­47 3­53 3­59 3­67 Triggering on Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Triggering Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Triggering from the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Triggering on a Waveform Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Triggering Based on Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­73 3­73 3­78 3­82 3­86 TDS 500D, TDS 600B, & TDS 700D User Manual i Table of Contents Triggering on Pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Communications Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Delayed Triggering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­99 3­113 3­117 Measuring Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taking Automated Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taking Cursor Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Taking Graticule Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Displaying Histograms (TDS 500D and TDS 700D Models Only) . . . . . . . . . . Mask Testing (Option 2C Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optimizing Measurement Accuracy: SPC and Probe Cal . . . . . . . . . . . . . . . . . . 3­125 3­126 3­138 3­144 3­145 3­148 3­156 Saving Waveforms and Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Saving and Recalling Setups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Saving and Recalling Waveforms and Acquisitions . . . . . . . . . . . . . . . . . . . . . . Managing the File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Printing a Hardcopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Communicating with Remote Instruments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­165 3­165 3­168 3­175 3­180 3­191 Determining Status and Accessing Help . . . . . . . . . . . . . . . . . . . . . . . . Displaying Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Displaying the Banner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Displaying Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­197 3­197 3­199 3­199 Using Features for Advanced Applications . . . . . . . . . . . . . . . . . . . . . . Limit Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform Math . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fast Fourier Transforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform Differentiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waveform Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3­201 3­201 3­206 3­209 3­228 3­233 Appendices Appendix A: Options and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix B: Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix C: Packaging for Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix D: Probe Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix E: Inspection and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . Appendix F: Programmer Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A­1 B­1 C­1 D­1 E­1 F­1 Glossary Index ii TDS 500D, TDS 600B, & TDS 700D User Manual Table of Contents List of Figures Figure 1­1: Rear Panel Controls Used in Start Up . . . . . . . . . . . . . . . Figure 1­2: ON/STBY Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­1: Connecting a Probe for the Examples (P6245 shown) . . Figure 2­2: SETUP Button Location . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­3: The Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­4: Trigger Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­5: The Display After Factory Initialization . . . . . . . . . . . . . Figure 2­6: The VERTICAL and HORIZONTAL Controls . . . . . . . Figure 2­7: TRIGGER Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­8: AUTOSET Button Location . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­9: The Display After Pressing Autoset . . . . . . . . . . . . . . . . . Figure 2­10: Display Signals Requiring Probe Compensation . . . . . . Figure 2­11: The Channel Buttons and Lights . . . . . . . . . . . . . . . . . . . Figure 2­12: The Vertical Main Menu and Coupling Side Menu . . . . Figure 2­13: The Menus After Changing Channels . . . . . . . . . . . . . . Figure 2­14: Measure Main Menu and Select Measurement Side Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­15: Four Simultaneous Measurement Readouts . . . . . . . . . Figure 2­16: General Purpose Knob Indicators . . . . . . . . . . . . . . . . . Figure 2­17: Snapshot of Channel 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2­18: Save/Recall Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­1: How Probe Compensation Affects Signals . . . . . . . . . . . . Figure 3­2: P6139A Probe Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­3: The Channel Readout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­4: Waveform Selection Priority . . . . . . . . . . . . . . . . . . . . . . . Figure 3­5: Scaling and Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­6: Vertical Readouts and Channel Menu . . . . . . . . . . . . . . . Figure 3­7: Record View and Time Base Readouts . . . . . . . . . . . . . . . Figure 3­8: Horizontal Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­9: Displaying an Extended Acquisition Length Record . . . Figure 3­10: Extended Acquisition Length and Zoom . . . . . . . . . . . . Figure 3­11: Acquisition: Input Analog Signal, Sample, and Digitize Figure 3­12: Several Points May be Acquired for Each Point Used . Figure 3­13: Real-Time Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1­7 1­8 2­10 2­11 2­11 2­12 2­13 2­14 2­15 2­16 2­16 2­17 2­18 2­20 2­21 2­23 2­24 2­26 2­28 2­30 3­6 3­7 3­13 3­14 3­16 3­17 3­20 3­21 3­24 3­26 3­27 3­28 3­28 TDS 500D, TDS 600B, & TDS 700D User Manual iii Table of Contents Figure 3­14: Equivalent-Time Sampling . . . . . . . . . . . . . . . . . . . . . . . Figure 3­15: How the Acquisition Modes Work . . . . . . . . . . . . . . . . . Figure 3­16: Acquisition Menu and Readout . . . . . . . . . . . . . . . . . . . . Figure 3­17: Acquire Menu -- Stop After . . . . . . . . . . . . . . . . . . . . . . Figure 3­18: Aliasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­19: Display Menu -- Style . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­20: Trigger Point and Level Indicators . . . . . . . . . . . . . . . . . Figure 3­21: Display Menu -- Setting . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­22: Display Menu -- Palette Colors . . . . . . . . . . . . . . . . . . . Figure 3­23: Display Menu -- Map Reference Colors . . . . . . . . . . . . Figure 3­24: Display Menu -- Restore Colors . . . . . . . . . . . . . . . . . . . Figure 3­25: Zoom Mode with Horizontal Lock Set to None . . . . . . . Figure 3­26: Dual Window (Preview) Mode . . . . . . . . . . . . . . . . . . . . . Figure 3­27: Dual Zoom -- Shown Dual Window (Preview) Mode . . Figure 3­28: Normal DSO Acquisition and Display Mode Versus DPO Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­29: DPO Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­30: Normal DSO Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­31: DPO XY Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­32: Fast Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­33: Horizontal Menu -- FastFrame Setup . . . . . . . . . . . . . . Figure 3­34: Horizontal Menu -- FastFrame Snapshot . . . . . . . . . . . Figure 3­35: FastFrame TimeStamp . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­36: Triggered Versus Untriggered Displays . . . . . . . . . . . . . Figure 3­37: Trigger Holdoff Time Ensures Valid Triggering . . . . . . Figure 3­38: Slope and Level Controls Help Define the Trigger . . . . Figure 3­39: TRIGGER Controls and Status Lights . . . . . . . . . . . . . . Figure 3­40: Example Trigger Readouts -- Edge Trigger Selected . . Figure 3­41: Record View, Trigger Position, and Trigger Level Bar Readouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­42: Edge Trigger Readouts . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­43: Main Trigger Menu -- Edge Type . . . . . . . . . . . . . . . . . Figure 3­44: Violation Zones for Setup/Hold Triggering . . . . . . . . . . Figure 3­45: Logic Trigger Readouts -- State Class Selected . . . . . . Figure 3­46: Logic Trigger Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­47: Logic Trigger Menu -- Time Qualified TRUE . . . . . . . Figure 3­48: Triggering on a Setup/Hold Time Violation . . . . . . . . . . Figure 3­49: Pulse Trigger Readouts . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­50: Main Trigger Menu -- Glitch Class . . . . . . . . . . . . . . . . 3­29 3­33 3­35 3­38 3­39 3­42 3­43 3­47 3­49 3­51 3­52 3­56 3­57 3­59 3­61 3­62 3­62 3­65 3­67 3­68 3­70 3­71 3­74 3­77 3­78 3­79 3­81 3­82 3­83 3­83 3­90 3­91 3­92 3­94 3­98 3­100 3­102 iv TDS 500D, TDS 600B, & TDS 700D User Manual Table of Contents Figure 3­51: Main Trigger Menu -- Runt Class . . . . . . . . . . . . . . . . . Figure 3­52: Main Trigger Menu -- Slew Rate Class . . . . . . . . . . . . . Figure 3­53: Main Trigger Menu -- Comm Type . . . . . . . . . . . . . . . . Figure 3­54: Delayed Runs After Main . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­55: Delayed Triggerable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­56: How the Delayed Triggers Work . . . . . . . . . . . . . . . . . . . Figure 3­57: Delayed Trigger Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­58: Histogram, Graticule, Cursor and Automated Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­59: Measurement Readouts with Statistics . . . . . . . . . . . . . . Figure 3­60: Measure Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­61: Measure Menu -- Gating . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­62: Measure Menu -- Reference Levels . . . . . . . . . . . . . . . . Figure 3­63: Measure Delay Menu -- Delay To . . . . . . . . . . . . . . . . . . Figure 3­64: Snapshot Menu and Readout . . . . . . . . . . . . . . . . . . . . . . Figure 3­65: Cursor Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­66: Cursor Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­67: H Bars Cursor Menu and Readouts . . . . . . . . . . . . . . . . Figure 3­68: Paired Cursor Menu and Readouts . . . . . . . . . . . . . . . . Figure 3­69: Histogram Menu and Vertical Histogram . . . . . . . . . . . Figure 3­70: Mask menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­71: Creating a User Mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­72: Performing a Signal Path Compensation . . . . . . . . . . . . Figure 3­73: Probe Cal Menu and Gain Compensation Display . . . . Figure 3­74: Re-use Probe Calibration Data Menu . . . . . . . . . . . . . . . Figure 3­75: Save/Recall Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­76: Save Waveform Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­77: More Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­78: File Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­79: File System -- Labeling Menu . . . . . . . . . . . . . . . . . . . . . Figure 3­80: Utility Menu -- System I/O . . . . . . . . . . . . . . . . . . . . . . . Figure 3­81: Hardcopy Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­82: Date and Time Display . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­83: Connecting the Oscilloscope Directly to the Hardcopy Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­84: Connecting the Oscilloscope and Hardcopy Device Via a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­85: Typical GPIB Network Configuration . . . . . . . . . . . . . . Figure 3­86: Stacking GPIB Connectors . . . . . . . . . . . . . . . . . . . . . . . 3­105 3­110 3­115 3­117 3­118 3­120 3­122 3­125 3­129 3­130 3­131 3­133 3­134 3­136 3­139 3­140 3­141 3­142 3­145 3­149 3­154 3­157 3­160 3­163 3­166 3­170 3­173 3­176 3­177 3­182 3­183 3­185 3­186 3­189 3­192 3­193 TDS 500D, TDS 600B, & TDS 700D User Manual v Table of Contents Figure 3­87: Connecting the Oscilloscope to a Controller . . . . . . . . . Figure 3­88: Utility Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­89: Status Menu -- System . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­90: Banner Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­91: Initial Help Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­92: Comparing a Waveform to a Limit Template . . . . . . . . Figure 3­93: Acquire Menu -- Create Limit Test Template . . . . . . . . Figure 3­94: More Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­95: Dual Waveform Math Main and Side Menus . . . . . . . . Figure 3­96: System Response to an Impulse . . . . . . . . . . . . . . . . . . . . Figure 3­97: Define FFT Waveform Menu . . . . . . . . . . . . . . . . . . . . . . Figure 3­98: FFT Math Waveform in Math1 . . . . . . . . . . . . . . . . . . . . Figure 3­99: Cursor Measurement of an FFT Waveform . . . . . . . . . . Figure 3­100: Waveform Record vs. FFT Time Domain Record . . . . Figure 3­101: FFT Time Domain Record vs. FFT Frequency Domain Record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­102: How Aliased Frequencies Appear in an FFT . . . . . . . . Figure 3­103: Windowing the FFT Time Domain Record . . . . . . . . . Figure 3­104: FFT Windows and Bandpass Characteristics . . . . . . . Figure 3­105: Derivative Math Waveform . . . . . . . . . . . . . . . . . . . . . . Figure 3­106: Peak-Peak Amplitude Measurement of a Derivative Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­107: Integral Math Waveform . . . . . . . . . . . . . . . . . . . . . . . . Figure 3­108: H Bars Cursors Measure an Integral Math Waveform Figure B­1: MCross Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure B­2: Fall Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure B­3: Rise Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure B­4: Choosing Minima or Maxima to Use for Envelope Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure D­1: Typical High Voltage Probes . . . . . . . . . . . . . . . . . . . . . . . Figure D­2: A6303 Current Probe Used in the AM 503S Opt. 03 . . . Figure F­1: Equipment Needed to Run the Example Programs . . . . 3­193 3­195 3­198 3­199 3­200 3­202 3­203 3­207 3­208 3­211 3­212 3­214 3­215 3­217 3­218 3­222 3­225 3­228 3­230 3­231 3­235 3­236 B­4 B­9 B­14 B­16 D­3 D­5 F­1 vi TDS 500D, TDS 600B, & TDS 700D User Manual Table of Contents List of Tables Table 1­1: Key Features and differences of models . . . . . . . . . . . . . . Table 1­2: Fuse and fuse cap part numbers . . . . . . . . . . . . . . . . . . . . Table 3­1: Autoset defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­2: How interleaving affects sample rate . . . . . . . . . . . . . . . . . Table 3­3: Additional resolution bits . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­4: TDS 500D and TDS 700D Sampling mode selection (when fit to screen is off) . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­5: XY Format pairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­6: DPO XY Format pairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­7: Pattern and State Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­8: Pulse trigger definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­9: Comm triggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­10: Communications pulse forms . . . . . . . . . . . . . . . . . . . . . . Table 3­11: Measurement definitions . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­12: Measurement definitions . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­13: Standard masks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table 3­14: Probe cal status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­1: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­2: Standard accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­3: Optional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table A­4: Recommended Probe Cross Reference . . . . . . . . . . . . . . . Table A­5: Accessory software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Table E­1: External inspection check list ...................... 1­3 1­7 3­10 3­31 3­34 3­37 3­46 3­65 3­88 3­100 3­113 3­116 3­126 3­147 3­155 3­164 A­1 A­4 A­5 A­6 A­9 E­2 TDS 500D, TDS 600B, & TDS 700D User Manual vii Table of Contents viii TDS 500D, TDS 600B, & TDS 700D 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. 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 marking on the product. Consult the product manual for further ratings information before making connections to the product. The common terminal is at ground potential. Do not connect the common terminal to elevated voltages. Do not apply a potential to any terminal, including the common terminal, that exceeds the maximum rating of that terminal. 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. TDS 500D, TDS 600B, & TDS 700D User Manual ix General Safety Summary 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. Symbols and Terms 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. 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: WARNING High Voltage Protective Ground (Earth) Terminal CAUTION Refer to Manual Double Insulated Electrostatic Discharge Acquisition circuitry in the TDS 794D is very susceptible to damage from electrostatic discharge and from overdrive signals. To prevent electrostatic damage to the TDS 794D, be sure to operate the oscilloscope only in a static-controlled environment. Be sure to discharge to ground any electrostatic charge that may be present on cables and probes before attaching them to the oscilloscope. To prevent damage from electrostatic discharge, install short-circuit terminations on unused input connectors. Always use a wrist strap with internal impedance (provided with your instrument) when handling your oscilloscope or making connections. x TDS 500D, TDS 600B, & TDS 700D User Manual Preface This is the User Manual for the TDS 500D, TDS 600B, & TDS 700D Digitizing Oscilloscopes. The chapter Getting Started briefly describes the TDS Oscilloscope, prepares you to install it, and tells you how to put it into service. The chapter Operating Basics covers basic principles of the operation of the oscilloscope. The operating interface illustrations and the tutorial examples rapidly help you understand how your oscilloscope operates. The chapter Reference teaches you how to perform specific tasks. See page 3­1 for a complete list of operating tasks covered in that chapter. The Appendices provide an options listing, an accessories listing, and other useful information. Related Manuals The following documents are related to the use or service of the oscilloscope. H The TDS Family Digitizing Oscilloscopes Programmer Manual (a diskette that is included with the user manual) describes using a computer to control the oscilloscope through the GPIB interface. The TDS 500D, TDS 600B, & TDS 700D Reference gives you a quick overview of how to operate the oscilloscope. The TDS 500D, TDS 600B, & TDS 700D Technical Reference (Performance Verification and Specifications) tells how to verify the performance of the oscilloscope and lists its specifications. The TDS Family Option 05 Video Trigger Instruction Manual describes use of the video trigger option for TDS oscilloscopes equipped with that option only. The TDS 500D, TDS 600B, & TDS 700D Service Manual provides information for maintaining and servicing the oscilloscope to the module level. H H H H TDS 500D, TDS 600B, & TDS 700D User Manual xi Preface Default Model This manual documents the TDS 500D, TDS 600B, & TDS 700D Digitizing Oscilloscopes. Take special note of the following conventions: H Some TDS models have two auxiliary channels called AUX 1 and AUX 2, instead of CH 3 and CH 4. References to these channels default to CH 3 and CH 4; if your oscilloscope is one of these models, read AUX 1 and AUX 2 respectively for all references to CH 3 and CH 4 in this manual. The TDS 684B display screen appears as the default screen wherever a display screen is illustrated in this manual. H Model References This manual documents the TDS 500D, TDS 600B, & TDS 700D Digitizing Oscilloscopes. Take note of the following conventions used when referencing these oscilloscopes: H H H The name "TDS 500D" is used when providing information common to the TDS 520D, TDS 540D, and TDS 580D model oscilloscopes. The name "TDS 600B" is used when providing information common to the TDS 620B, TDS 644B, TDS 680B, and TDS 684B model oscilloscopes. The name "TDS 700D" is used when providing information common to the TDS 724D, TDS 754D, TDS 784D, and TDS 794D model oscilloscopes. Conventions In this manual, you will find various procedures which contain steps of instructions for you to perform. To keep those instructions clear and consistent, this manual uses the following conventions: H In procedures, names of front panel controls and menu labels appear in boldface print. xii TDS 500D, TDS 600B, & TDS 700D User Manual Preface H Names also appear in the same case (initial capitals or all uppercase) in the manual as is used on the oscilloscope front panel and menus. Front panel names are all upper case letters, for example, VERTICAL MENU and CH 1. Instruction steps are numbered. The number is omitted if there is only one step. When steps require that you make a sequence of selections using front panel controls and menu buttons, an arrow ( © ) marks each transition between a front panel button and a menu, or between menus. Also, whether a name is a main menu or side menu item is clearly indicated: Press VERTICAL MENU © Coupling (main) © DC (side) © Bandwidth (main) © 250 MHz (side). H H Using the convention just described results in instructions that are graphically intuitive and simplifies procedures. For example, the instruction just given replaces these five steps: 1. Press the front-panel button VERTICAL MENU. 2. Press the main-menu button Coupling. 3. Press the side-menu button DC. 4. Press the main-menu button Bandwidth. 5. Press the side-menu button 250 MHz. Sometimes you may have to make a selection from a pop-up menu: Press TRIGGER MENU © Type (main) © Edge (pop-up). In this example, you repeatedly press the main menu button Type until Edge is highlighted in the pop-up menu. TDS 500D, TDS 600B, & TDS 700D User Manual xiii Preface xiv TDS 500D, TDS 600B, & TDS 700D User Manual Product Description The Tektronix TDS Oscilloscope is a superb tool for acquiring, displaying, and measuring waveforms. Its performance addresses the needs of both benchtop lab and portable applications with the following key features: H H H H H H H H An analog bandwidth of up to 2 GHz, depending on the model (see Table 1­1 Key Features and Differences of by Models on page 1­3) A maximum sample rate of up to 5 GS/s per channel, depending on the model (see Table 1­1 on page 1­3) Records lengths up to 8 M, depending on the model and options (see Table 1­1 on page 1­3) Up to 29 automatic measurements and measurement statistics (see Taking Automated Measurements on page 3­126) 1% DC vertical gain accuracy (see TDS 500D, TDS600B & TDS 700D Technical Reference manual) DPO for high speed acquisition and analog oscilloscope emulation (see Using DPO Acquisition Mode on page 3­59) Internal floppy disk storage and compatible with Iomega 100 Mbyte Zip drive (see Saving Waveforms and Setups on page 3­165) Trigger modes include edge, logic, pulse, delay, communication, and video trigger modes (see Triggering on Waveforms on page 3­73) TDS 500D, TDS 600B, & TDS 700D User Manual 1­1 Product Description H Advanced features include limit testing (see Limit Testing on page 3­201), FFT (see Fast Fourier Transforms on page 3­209), waveform differentiation and integrations (see Waveform Differentiation and Waveform Integration starting on page 3­228), mask testing (see Mask Testing on page 3­148), waveform histograms (see Displaying Histograms on page 3­145), and communications signal analysis (see Communication Triggers on page 3­113, Mask Testing on page 3­148, and options 2C, 3C, and 4C on page A­2) Adjustable channel deskew for increased measurement accuracy (see Channel/Probe Deskew on page 3­158) Full GPIB programmability (see Communicating with Remote Instruments on page 3­191 and the TDS Family Programmer Manual disk) Wide array of probing solutions (see Accessory Probes on page A­6 and Probe Selection on page D­1) CE, FCC, UL, and CAN/CSE compliant (see TDS 500D, TDS600B & TDS 700D Technical Reference manual) Four channel or 2 + 2 channel operation, depending on the model. All channels have 8-bit resolution. (See Table 1­1 on page 1­3.) Dual Window Zoom, which shows a waveform magnified and unmagnified on the same display (see Using Dual Window Mode on page 3­56) Sample, envelope, average, high res, peak-detect and DPO acquisition modes (see Table 1­1, on page 1­3, for models and modes available) H H H H H H H 1­2 TDS 500D, TDS 600B, & TDS 700D User Manual Product Description Differences by Model Table 1­1 lists some key TDS features and relates them to the different TDS models that this manual covers. Table 1­1: Key Features and differences of models Feature No. of channels Digitizing rate, max. No. of Channels. @ maximum rate Analog Bandwidth Record Lengths, max. DPO Acquisitions Hi Res Acquisitions Advanced DSP Math3 Communication Signal Analyzer Reference Receiver Storage, Floppy Disk iomega Zip Drive support I/0 includes RS­232 and Centronics5 Input Impedance Display 1 520D 2+21 2 GS/s 1 540D 4 2 GS/s 2 580D 4 4 GS/s 1 1 GHz 620B 2 + 21 644B 4 680B 2 + 21 684B 4 724D 2+21 2 GS/s 754D 4 2 GS/s 2 784D 4 4 GS/s 1 1 GHz 794D 4 4 GS/s 2.5 GS/s 2 500 MHz 4 2 5 GS/s 4 1 GHz 1 500 MHz 500 MHz 2 GHz To 50K/Channel2 Yes Yes Opt. 2F Opt. 2C Opt. 3C and 4C To 15K/Channel No No Std.4 No No Std. To 50K/Channel2 Yes Yes Opt. 2C Opt. 3C and 4C No Yes Opt. 13 No Std.4 50 W and 1 MW Mono Color Mono Color Yes 50 W only Two plus Two channel operation allows two of four channels to be displayed simultaneously. Channels not displayed can be used to couple a triggering signal to the oscilloscope. These TDS models can be purchased with Option 1M or Option 2M, which add longer record length settings (up to 2 Mb/channel). See Option 1M and Option 2M on page A­2. Advanced digital signal processing provides FFTs, integrals, and derivatives of waveforms. See Option 2F on page A­3. Std. denotes a standard product feature as opposed to a feature included as part of an option. GPIB I/O included with all models. 2 3 4 5 TDS 500D, TDS 600B, & TDS 700D User Manual 1­3 Product Description Product Specification The product specification is found in the technical reference TDS 500D, TDS 600B, & TDS 700D Technical Reference (Performance Verification and Specifications) that is shipped as a standard accessory with the TDS Oscilloscope. 1­4 TDS 500D, TDS 600B, & TDS 700D User Manual Start Up Before you use the TDS Oscilloscope, ensure that it is properly installed and powered on. Preparation To ensure maximum accuracy for your most critical measurements, you should know about signal path compensation and the proper use of the probe you choose to use with your oscilloscope. Signal Path Compensation Be sure you compensate your oscilloscope for the surrounding temperature. This action, called Signal Path Compensation (SPC), ensures maximum possible accuracy for your most critical measurements. See Signal Path Compensation on page 3­156 for a description of and operating information on this feature. The TDS 580D, TDS 680B, TDS 684B, TDS 784D, and TDS 794D oscilloscopes ship without probes. To take advantage of the higher bandwidth of these oscilloscopes, order the P6245, P6217, or P6158 probes. The remaining TDS 500D, TDS 600B, and TDS 700D oscilloscopes ship with general-purpose probes. The probe model and quantities shipped are listed in Standard Accessories on page A­4. For a list of recommended optional-accessory probes for all oscilloscope models, see Accessory Probes on page A­5. Recommended Probes Probe Usage Be sure you use the appropriate probe for the measurement. For instance, do not use the P6245 Active Probe to measure signals greater than ±8 volts or with more than ±10 volts of offset, since errors in signal measurement will result. (See the User manual for the probe for more information.) Instead, use a passive probe, such as P6139A passive probe, that allows higher voltage measurements. The P6139A probe is for measurements up to ±500 volts. Probes that require a 1 MW input, like the P6139A, will not work on the TDS 794D. TDS 500D, TDS 600B, & TDS 700D User Manual 1­5 Start Up CAUTION. Using the P6243 or P6245 Active Probe to measure signals greater than ±40 volts may damage the probe. Using the P6158 Voltage Divider Probe to measure signals greater than ±22 VRMS may damage the probe. Input Coupling Be sure to choose the proper input coupling and impedance for the probe or other cabling you use to couple signals to your oscilloscope. You should read Input Impedance Considerations on page 3­8 for information needed to ensure proper coupling of your input signals. Putting into Service To learn how to install, access the front panel, power on, do a self test, and power off the oscilloscope, do the following procedures: Installation To properly install and power on the oscilloscope, do the following steps: 1. Be sure you have the appropriate operating environment. Specifications for temperature, relative humidity, altitude, vibrations, and emissions are included in the TDS 500D, TDS 600B, & TDS 700D Technical Reference (Performance Verification and Specifications) manual (Tektronix part number 071-0135-xx). 2. Leave space for cooling. Do this by verifying that the air intake and exhaust holes on the sides and bottom of the cabinet are free of any airflow obstructions. Leave at least 5.1 cm (2 inches) free on each side. WARNING. To avoid electrical shock, be sure that the power cord is disconnected before checking the fuse. 3. Check the fuse to be sure it is the proper type and rating (see Figure 1­1). You can use either of two fuses. Each fuse requires its own cap (see Table 1­2). The oscilloscope is shipped with the UL approved fuse installed. 4. Check that you have the proper electrical connections. The oscilloscope requires 100 to 240 VACRMS, continuous range, 45 Hz to 440 Hz, and may require up to 300 W. 1­6 TDS 500D, TDS 600B, & TDS 700D User Manual Start Up Power Connector Principal Power Switch Fuse Figure 1­1: Rear Panel Controls Used in Start Up 5. Connect the proper power cord from the rear-panel power connector (see Figure 1­1) to the power system. Table 1­2: Fuse and fuse cap part numbers Fuse 0.25 inch × 1.25 inch (UL 198.6, 3AG): 6 A FAST, 250 V 5 mm × 20 mm (IEC 127): 5 A (T), 250 V Fuse part number 159-0013-00 159-0210-00 Fuse cap part number 200-2264-00 200-2265-00 Front Cover Removal To remove the front cover, grasp the left and right edges and snap the cover off of the front subpanel. (To reinstall the cover, align it to the front subpanel and snap it back on.) To power on the oscilloscope, do the following steps: 1. Check that the rear-panel principal power switch is on (see Figure 1­1). The principal power switch controls all AC power to the instrument. 2. If the oscilloscope is not powered on (the screen is blank), push the front-panel ON/STBY button to toggle it on (see Figure 1­2). Power On TDS 500D, TDS 600B, & TDS 700D User Manual 1­7 Start Up ON/STBY Button Figure 1­2: ON/STBY Button The ON/STBY button controls power to most of the instrument circuits. Power continues to go to certain parts even when this switch is set to STBY. Once the oscilloscope is installed, it is typical to leave the principal power switch on and use the ON/STBY button instead of the power switch. Self Test The oscilloscope automatically performs power-up tests each time it is turned on. It will come up with a display screen that states whether or not it passed the self test. To determine the self-test results, check the screen. (If the self test passed, the status display screen will be removed after a few seconds.) If the self test fails, call your local Tektronix Service Center. Depending on the type of failure, you may still be able to use the oscilloscope before it is serviced. Power Off To power off the oscilloscope, toggle the ON/STBY switch. 1­8 TDS 500D, TDS 600B, & TDS 700D User Manual Overview This chapter describes the basic concepts of operating the TDS Oscilloscope. Understanding the basic concepts of your oscilloscope will help you use it much more effectively. The first section, Operating Interface Maps, quickly shows you how the oscilloscope controls are organized and where you can read about them. It also illustrates the general procedures for operating the menu system. This section includes the titles: H H H H H Front Panel Map Rear Panel Map Display Map To Operate a Menu To Operate a Pop-Up Menu The second section, Tutorial, contains example procedures that lead you through the fundamental tasks needed to display a waveform measurement. It also includes an example procedure that teaches you how to store a setup of the oscilloscope controls for later use. This section includes the following tutorial examples: H H H H H Setting Up for the Examples Example 1: Displaying a Waveform Example 2: Displaying Multiple Waveforms Example 3: Taking Automated Measurements Example 4: Saving Setups To explore these topics in more depth and to read about topics not covered in this section, see Reference. A list of the topics covered begins on Page 3­1. TDS 500D, TDS 600B, & TDS 700D User Manual 2­1 Overview 2­2 TDS 500D, TDS 600B, & TDS 700D User Manual Operating Interface Maps This section contains illustrations, or maps, of the display, the front and rear panels, and the menu system of the TDS Oscilloscope. These maps will help you understand and operate the oscilloscope. This section also contains a visual guide to using the menu system. Front Panel Map -- Left Side File System, page 3­175 Side Menu Buttons, page 2­7 CLEAR MENU Removes Menus from the Display ON/STBY Switch, page 1­7 Main Menu Buttons, page 2­7 TDS 500D, TDS 600B, & TDS 700D User Manual 2­3 Operating Interface Maps Front Panel Map -- Right Side Measurement System, page 3­126 Masks, page 3­148 Histograms, page 3­145 Cursor Measurements, page 3­138 Saving and Recalling Waveforms, page 3­168 File System, page 3­175 Hardcopy, page 3­180 File System, page 3­175 Acquisition Modes, page 3­31 Cursor Measurements, page 3­138 Autoset, page 3­9 Help, page 3­199 Status, page 3­197 Saving and Recalling Setups, page 3­165 Color, page 3­47 Display Settings, page 3­40 Remote Communication, page 3­191 DPO, page 3­59 Selecting Channels, page 3­12 Waveform Math, page 3­206 Probe Calibration, page 3­158 Vertical Controls, page 3­16 Zoom, page 3­53 Horizontal Controls, page 3­21 Ground Triggering, page 3­73 Delay Triggering, page 3­117 Edge Triggering, page 3­82 Logic Triggering, page 3­86 Pulse Triggering, page 3­99 Comm Triggering, page 3­113 2­4 TDS 500D, TDS 600B, & TDS 700D User Manual Operating Interface Maps Rear Panel Map Principal Power Centronics Connector, page 3­180 RS-232 Connector, Switch, Zip Drive, page 3­179 page 3­180 page 1­7 GPIB Connector, page 3­191 VGA Output Fuse, page 1­6 Serial Number Power Connector, page 1­6 Rear Panel Connectors SIGNAL OUTPUT ­ (Provides Analog Signal Output from CH3 ­ or AX1 ­ @ 10 mV/div) AUX TRIGGER INPUT ­ (Provides Auxiliary Trigger Signal Input) MAIN TRIGGER OUTPUT ­ (Provides Main Trigger (TTL) Output) DELAYED TRIGGER OUTPUT ­ (Provides Delayed Trigger (TTL) Output) Security Bracket TDS 500D, TDS 600B, & TDS 700D User Manual 2­5 Operating Interface Maps Display Map The acquisition status, page 3­35 Indicates position of vertical bar cursors in the waveform record, page 3­142 Trigger position (T), page 3­81 The value entered with the general purpose knob or keypad. When present, the general purpose knob makes coarse adjustments; when absent, fine adjustments. The acquisition record icon Shows what part of the waveform record is displayed, page 3­20 The waveform record icon Shows what part of the acquisition record is in the waveform record, page 3­26 Trigger level on waveform (may be an arrow at right side of screen instead of a bar). Cursor measurements, page 3­138 Channel level and waveform source. The side menu with choices of specific actions. Vertical scale, page 3­16 Trigger parameters, page 3­81 The main menu with choices of major actions Horizontal scale and time base type, page 3­21 2­6 TDS 500D, TDS 600B, & TDS 700D User Manual Operating Interface Maps To Operate a Menu 1 Press front-panel menu button. (Press SHIFT first if button label is blue.) 2 Press one of these buttons to select from main menu. 3 Press one of these buttons to select from side menu (if displayed). 4 If side menu item has an adjustable value (shown in reverse video), adjust it with the general purpose knob or keypad. TDS 500D, TDS 600B, & TDS 700D User Manual 2­7 Operating Interface Maps To Operate a Pop-Up Menu Press to display pop-up menus. Press it again to make selection. Alternatively, press SHIFT first to make selection in the opposite direction. A pop-up selection changes the other main menu titles. Press here to remove menus from screen. 2­8 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial This section quickly makes you acquainted with some of the fundamental operations required to use the TDS Oscilloscope to take measurements. Start this tutorial by doing Setting Up for the Examples on this page. Setting Up for the Examples Perform the following tasks to connect input signals to the TDS Oscilloscope, to reset it, and to become acquainted with its display screen. Once completed, these tasks ready the oscilloscope for use in the examples that follow. Connect the Input Signal Remove all probes and signal inputs from the input BNC connectors along the lower right of the front panel. Then, using an appropriate probe (such as the P6245), connect from the CH 1 connector of the oscilloscope to the PROBE COMPENSATION connectors. (See Figure 2­1.) NOTE. See Appendix A: Options and Accessories for optional probes you can order and use with this product. TDS 500D, TDS 600B, & TDS 700D User Manual 2­9 Tutorial Signal Gnd Figure 2­1: Connecting a Probe for the Examples (P6245 shown) Reset the Oscilloscope Do the following steps to reset the oscilloscope to a known factory default state before doing the examples. (You can reset the oscilloscope anytime you begin a new task and need to "start fresh" with known default settings.) 1. Press the save/recall SETUP button to display the Setup menu. (See Figure 2­2.) 2­10 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial SETUP Button Figure 2­2: SETUP Button Location The oscilloscope displays main menus along the bottom of the screen. Figure 2­3 shows the Setup main menu. OK Confirm Factory Init Menu Item and Button Recall Factory Setup Menu Item and Button Figure 2­3: The Setup Menu 2. Press the button directly below the Recall Factory Setup menu item. The display shows side menus along the right side of the screen. The buttons to select these side menu items are to the right of the side menu. Because an accidental instrument reset could destroy a setup that took a long time to create, the oscilloscope asks you to verify the Recall Factory Setup selection. (See Figure 2­3.) 3. Press the button to the right of the OK Confirm Factory Init side menu item. TDS 500D, TDS 600B, & TDS 700D User Manual 2­11 Tutorial NOTE. This manual uses the following notation to represent the sequence of selections you made in steps 1, 2 and 3: Press save/recall SETUP © Recall Factory Setup (main) © OK Confirm Factory Init (side). Note that a clock icon appears on screen. The oscilloscope displays this icon when performing operations that take longer than several seconds. 4. Press SET LEVEL TO 50% (see Figure 2­4) to be sure the oscilloscope triggers on the input signal. SET LEVEL TO 50% Button Figure 2­4: Trigger Controls Examine the Display Elements Read the following information to become familiar with the oscilloscope display before doing the examples. Figure 2­5 shows the display that results from the oscilloscope reset. There are several important points to observe: H H H The trigger level bar shows that the waveform is triggered at a level near 50% of its amplitude (from step 4). The trigger position indicator shows that the trigger position of the waveform is located at the horizontal center of the graticule. The channel reference indicator shows the vertical position of channel 1 with no input signal. This indicator points to the ground level for the channel when its vertical offset is set to 0 V in the vertical menu; when vertical offset is not set to 0 V, it points to the vertical offset level. 2­12 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial H H H The trigger readout shows that the oscilloscope is triggering on channel 1 (Ch1) on a rising edge, and that the trigger level is about 200­300 mV. The time base readout shows that the main time base is set to a horizontal scale of 500 ms/div. The channel readout indicates that channel 1 (Ch1) is displayed with DC coupling. (In AC coupling, ~ appears after the volts/div readout.) The oscilloscope always displays channel 1 at reset. Trigger Level Bar Trigger Position Indicator Channel Reference Indicator Trigger Readout Time Base Readout Channel Readout Figure 2­5: The Display After Factory Initialization Right now, the channel, time base, and trigger readouts appear in the graticule area because a menu is displayed. You can press the CLEAR MENU button at any time to remove any menus and to move the readouts below the graticule. Example 1: Displaying a Waveform The TDS Oscilloscope provides front panel knobs for you to adjust a waveform, or it can automatically set up its controls to display a waveform. Do the following tasks to learn how to adjust a waveform and how to autoset the TDS Oscilloscope. TDS 500D, TDS 600B, & TDS 700D User Manual 2­13 Tutorial Adjust the Waveform Display The display shows the probe compensation signal. It is a 1 kHz square wave of approximately 0.5 V amplitude. Figure 2­6 shows the main VERTICAL and HORIZONTAL sections of the front panel. Each has SCALE and POSITION knobs. Do the following steps to adjust the size and placement of the waveform using the front-panel knobs: 1. Turn the vertical SCALE knob clockwise. Observe the change in the displayed waveform and the channel readout at the bottom of the display. Figure 2­6: The VERTICAL and HORIZONTAL Controls 2. Turn the vertical POSITION knob first one direction, and then the other. Observe the change in the displayed waveform. Then return the waveform to the center of the graticule. 3. Turn the horizontal SCALE knob one click clockwise. Observe the time base readout at the bottom of the display. The time base should be set to 200 ms/div now, and you should see two complete waveform cycles on the display. 2­14 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial Autoset the Oscilloscope When you first connect a signal to a channel and display it, the signal displayed may not be scaled and triggered correctly. Use the autoset function and you should quickly get a meaningful display. You should have a stable display of the probe compensation waveform from the last step. Do the following steps to first create an unstable display and then to autoset the display: 1. To create an unstable display, slowly turn the trigger MAIN LEVEL knob (see Figure 2­7) first one direction, and then the other. Observe what happens when you move the trigger level above the highest part of the waveform. Leave the trigger level in that untriggered state. MAIN LEVEL Knob Figure 2­7: TRIGGER Controls 2. Press AUTOSET (see Figure 2­8) and observe the stable waveform display. NOTE. The oscilloscope triggers on the input signal. Sometimes the oscilloscope triggers on high frequency signal components that are not visible using the current setup. You may see these signal components at higher HORIZONTAL SCALE settings. You can eliminate these signal components using shorter probe ground and signal leads or by using bandwidth limiting. TDS 500D, TDS 600B, & TDS 700D User Manual 2­15 Tutorial AUTOSET Button Figure 2­8: AUTOSET Button Location Figure 2­9 shows the display after pressing AUTOSET. If necessary, you can adjust the waveform now by using the knobs discussed earlier in this example. Figure 2­9: The Display After Pressing Autoset 2­16 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial NOTE. If you are using a passive probe, such as the P6139A probe, the corners on your displayed signal may look rounded or pointed. (See Figure 2­10.) If so, then you may need to compensate your probe. See To Compensate Passive Probes on page 3­6. Figure 2­10: Display Signals Requiring Probe Compensation Example 2: Displaying Multiple Waveforms The TDS Oscilloscope can display up to four channels, three math waveforms, and four reference waveforms at one time. Do the following tasks to learn how to display and control more than one waveform at a time. Add a Waveform The VERTICAL section of the front panel contains the channel selection buttons. These buttons are CH 1, CH 2, CH 3, CH 4, and MORE. (See Figure 2­11.) (CH 3 and CH 4 will be replaced by AUX1 and AUX2 on some models; see Default Model on page xii and Differences by Model on page 1­3.) TDS 500D, TDS 600B, & TDS 700D User Manual 2­17 Tutorial Figure 2­11: The Channel Buttons and Lights Each of the channel (CH) buttons has a light behind its label. Right now, the CH 1 light is on. That light indicates that the vertical controls are set to adjust channel 1. Do the following steps to add a waveform to the display: 1. If you are not continuing from the previous example, follow the instructions on page 2­9 under the heading Setting Up for the Examples. 2. Press SETUP © Recall Factory Setup (main) © OK Confirm Factory Init (side). 3. Press AUTOSET. 4. Press CH 2. The display shows a second waveform, which represents the signal on channel 2. Since there is nothing connected to the CH 2 input connector, this waveform is a flat line. There are several other important things to observe: H The channel readout on the display now shows the settings for both Ch1 and Ch2. 2­18 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial H H There are two channel indicators at the left edge of the graticule. Right now, they overlap. The light above the CH 2 button is now on, and the CH 1 light is off. Because the knobs control only one channel at a time, the vertical controls are now set to adjust channel 2. The trigger readout still indicates that the trigger is detecting trigger events on channel one. The trigger source is not changed simply by adding a channel. (You can change the trigger source by using the TRIGGER MENU button to display the trigger menu.) H 5. Turn the vertical POSITION knob clockwise to move the channel 2 waveform up on the graticule. You will notice that the channel reference indicator for channel 2 moves with the waveform. 6. Press VERTICAL MENU © Coupling (main). The VERTICAL MENU button displays a menu that gives you control over many vertical channel parameters. (See Figure 2­12.) Although there can be more than one channel displayed, the vertical menu and buttons only adjust the selected channel. Each menu item in the Vertical menu displays a side menu. Right now, the Coupling item in the main menu is highlighted, which means that the side menu shows the coupling choices. At the top of the side menu, the menu title shows the channel affected by the menu choices. That channel always matches the lighted channel button. 7. Press GND (side) to toggle the selection to ground (GND). That changes the input coupling of channel 2 from DC to GND. The channel readout for channel 2 (near the bottom of the graticule) now shows a ground indicator. TDS 500D, TDS 600B, & TDS 700D User Manual 2­19 Tutorial Side Menu Title Ch2 Reference Indicator Figure 2­12: The Vertical Main Menu and Coupling Side Menu Assign Controls to Another Channel Pressing a channel (CH) button sets the vertical controls to that channel. It also adds the channel to the display if that waveform is not already displayed. To explore assigning controls to different channels, do the following steps: 1. Press CH 1. Observe that now the side menu title shows Ch1 (see Figure 2­13) and that the light above CH 1 is lighted. The highlighted menu item in the side menu has changed from the GND channel 2 setting to the DC coupling setting of channel 1. 2. Press CH 2 © DC (side) to toggle the selection to DC. That returns the input coupling of channel 2 to its initial state. 2­20 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial Side Menu Title Figure 2­13: The Menus After Changing Channels Remove a Waveform Pressing the WAVEFORM OFF button removes the waveform for the currently selected channel. If the waveform you want to remove is not already selected, select that channel using the channel (CH) button. 1. Press WAVEFORM OFF (under the vertical SCALE knob). Since the CH 2 light was on when you pressed the WAVEFORM OFF button, the channel 2 waveform was removed. The channel (CH) lights now indicate channel 1. Channel 1 has become the selected channel. When you remove the last waveform, all the CH lights are turned off. 2. Press WAVEFORM OFF again to remove the channel 1 waveform. TDS 500D, TDS 600B, & TDS 700D User Manual 2­21 Tutorial Example 3: Taking Automated Measurements The TDS Oscilloscope can measure many waveform parameters automatically and read out the results on screen. Do the following tasks to discover how to set up the oscilloscope to measure waveforms automatically. (For information on additional measurement features, see Display Measurement Statistics on page 3­137, Displaying Histograms on page 3­145, and Mask Testing on page 3­148.) Display Measurements Automatically To use the automated measurement system, you must have a stable display of your signal. Also, the waveform must have all the segments necessary for the measurement you want. For example, a rise time measurement requires at least one rising edge, and a frequency measurement needs at least one complete cycle. To take automated measurements, do the following steps: 1. If you are not continuing from the previous example, follow the instructions on page 2­9 under the heading Setting Up for the Examples. 2. Press SETUP © Recall Factory Setup (main) © OK Confirm Factory Init (side). 3. Press AUTOSET. 4. Press MEASURE to display the Measure main menu. (See Figure 2­14.) 5. If it is not already selected, press Select Measrmnt (main). The readout for that menu item indicates which channel the measurement will be taken from. All automated measurements are made on the selected channel. The Select Measurement side menu lists some of the measurements that can be taken on waveforms. There are many different measurements available; up to four can be taken and displayed at any one time. Pressing the button next to the ­more­ menu item brings up the other measurement selections. 6. Press Frequency (side). If the Frequency menu item is not visible, press ­more­ (side) repeatedly until the Frequency item appears. Then press Frequency (side). 2­22 TDS 500D, TDS 600B, & TDS 700D User Manual Tutorial Observe that the frequency measurement appears within the right side of the graticule area. The measurement readout includes the notation Ch1, meaning that the measurement is taken on the channel 1 waveform. (To take a measurement on another channel, select that channel, and then select the measurement.) Figure 2­14: Measure Main Menu and Select Measurement Side Menu 7. Press Positive Width (side) © ­more­ (side) © Rise Time (side) © Positive Duty Cycle (side). All four measurements are displayed. Right now, they cover a part of the graticule area, including the displayed waveforms. 8. To move the measurement readouts outside the graticule area, press CLEAR MENU. (See Figure 2­15.) TDS 500D, TDS 600B, & TDS 700D User Manual 2­23 Tutorial Remove Measurement Readouts Use the Measure menu to remove measurements you no longer want. To remove a measurement individually (you can also remove them, as a group), do the following step: 1. TDS 600B models: Press MEASURE © Remove Measrmnt (main) © Measurement 1, Measurement 2, and Measurement 4 (side) to remove those measurements. Leave the rise time measurement displayed. 2. TDS 500D and TDS 700D models: Press MEASURE © Measure (pop-up) © Remove Measrmnt (main) © Measurement 1, Measurement 2, and Measurement 4 (side) to remove those measurements. Leave the rise time measurement displayed. Press to Remove Menus From Screen Figure 2­15: Four Simultaneous Measurement Readouts Change the Measurement Reference Levels By default, the measurement system will use the 10% and 90% levels of the waveform for taking the rise time measurement. You can change these values to other percentages or change them to absolute voltage levels. 2­24 TDS 500D, TDS 600B, & TDS 700D User Manual