Home

User Manual TDS 200-Series Digital Real

1. 0 000 cece eee eee ee 6 Self Calibration 0 0 0 2 ccc eee eens 7 Probe Safety ii occ ee te ede tees 7 Probe Attenuation Setting 0 0 e cee eee eee 8 Basic Concepts 0 cece cece e cece cece eee eees 9 THO ZENE Cai as Wee Binet palato EDNA wha ene Benes 10 SOULCE asin ai wea ae ite ea POE eee de er ea oe 10 PY POS 2 eee ira ara TE E apta E E AE Oe ia wes 11 MOS sta anii tatters AUS Paga EP BAAS RS 6 SS ook Oy 11 Holdoff pear aea RR a n ea 13 Co pling onee cus emule ce A E eR Tede ace E ia 14 Position rosa Rae eld nated pe CANA RN RA hs Ca EES 14 Slope and Level siemersi 0 ccc eee eee ee eee eee 14 Acquiring Data a sia ara nigh song oo Radda tok Maen R 15 Acquisition Modes 0 cee ee eee eee eee 15 Time Base saoer ene arts erra asa Shure Peace NS aves 16 Scaling and Positioning Waveforms 16 Vertical Scale and Position 00200 ee eee 17 Horizontal Scale and Position Pretrigger Information 17 Taking Measurements 00 0 cece eee eee eee 20 Gratce seeen out eso Be Rel Sieh O Sd GM 20 CUISOLS iii 5 fai BA Ris Sa E cu RAT Ra aS Rae ous 21 A tomated esr pm a Tarot tarde hate ewan See Baleares 21 Setting Up the Oscilloscope 0 0 00 e eee eee 21 Using Autoset 20 E eee eee 22 Saving a Setup acima es uid stato het hie ik ease a 22 Recalling a Setup 0 2 cc eee eee eee 22 Defaults Factory Setup 0
2. 0 Optimizing the Acquisition 0 00 Measuring Propagation Delay 00 0 eee eee Triggering on a Video Signal 0 0000 Triggering on Video Fields 0 0 00 0 Triggering on Video Lines 0 eee eee eee Using the Window Function to See Waveform Details Triggering on Odd or Even Video Fields Analyzing a Differential Communication Signal TDS 210 and TDS 220 Firmware V 2 00 and Above and TDS 224 All Versions Oscilloscopes TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 without a TDS2MM 00 TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 witha TDS2MM 000000005 Viewing Impedance Changes in a Network 61 61 61 62 ii TDS 200 Series Digital Oscilloscope User Manual Table of Contents Reference sussa iss casas a obese Sie ue a A areata ad ACUE 2h dtr ane e apo ER de Wage how a CU e AULOSCL a mass Nro ecra Sura Bin wae ee eb ee Nee he CUISOIS 2 cise ht ern ob asks oe arab po HARE oh SR Rew eR F Display sss as ae een chs bee ot Ba heats pale A Horizontal ions e Wied bce bnted ine ated Seedy Ea E brik oo TDS 210 and TDS 220 Firmware V 2 00 and Above and TDS 224 All Versions Oscilloscopes TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 without a TDS2MM 0 00 TDS 210
3. TDS 210 TDS 220 TDS 224 P6112 P6112 Certifications TDS 210 TDS 220 TDS 224 P6112 P6112 CSA Certified Power Cords Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility meets the requirements of FCC Code of Federal Regulations 47 CFR Part 15 Subpart B Class A CISPR 11 Class A Electromagnetic radiated and conducted emissions IEC 1000 3 2 power line harmonics EN 50082 1 European Community Requirements IEC 61000 4 2 electrostatic discharge IEC 61000 4 3 radiated susceptibility IEC 61000 4 4 power line fast transients IEC 61000 4 5 power line surge immunity IEC 61000 4 6 conducted immunity to RF fields IEC 61000 4 8 magnetic immunity IEC 61000 4 11 voltage dips interrupts and variations AS NZS 2064 Australian emissions standard for Industrial Scientific and Medical Equipment Low Voltage Directive 73 23 EEC as amended by 93 68 EEC EN 61010 1 A2 1995 Safety requirements for electrical equipment for measurement control and laboratory use EN 61010 2 031 1994 Particular requirements for hand held probe assemblies for electrical measurement and test CAN CSA C22 2 No 1010 1 92 UL3111 1 First Edition CAN CSA C22 2 No 1010 2 031 IEC61010 2 031 CSA Certification includes the products and power cords appropriate for use in the North America power network All other power cords supplied are approved for the country of use TDS 200 Series Digital Oscilloscope User Manual
4. These manuals contain a language overlay for the front panel controls International Power Cords In addition to the power cord shipped with your instrument you can obtain the following cords Option AO North American 120V 60Hz 161 0230 01 Option Al European 230 V 50 Hz 161 0104 06 Option A2 United Kingdom 230 V 50Hz 161 0104 07 Option A3 Australian 240 V 50 Hz 161 0104 05 Option A4 North American 240 V 60 Hz 161 0104 08 Option A5 Switzerland 230 V 50Hz 161 0167 00 Soft Case The soft case AC220 protects the instrument from damage and provides space for probes power cord and manuals TDS 200 Series Digital Oscilloscope User Manual OSS e Appendix C General Care and Cleaning General Care Do not store or leave the instrument where the LCD display will be exposed to direct sunlight for long periods of time expose them to sprays liquids or solvents A CAUTION To avoid damage to the instrument or probes do not Cleaning Inspect the instrument and probes as often as operating conditions require To clean the exterior surface perform the following steps 1 Remove loose dust on the outside of the instrument and probes with a lint free cloth Use care to avoid scratching the clear plastic display filter 2 Usea soft cloth dampened with water to clean the instrument Use an aqueous solution of 75 isopropyl alcohol for more efficient cleaning A CAUTION To avoid damage to the surface of the instr
5. Adjustable temperature compensated 60 cd m Probe Compensator Output Output Voltage typical 5 V into gt 1 MQ load Frequency typical Power Source Source Voltage 1 kHz 100 120 VACaws 10 from 45 Hz through 440 Hz CAT Il 120 240 VACaws 10 from 45 Hz through 66 Hz CAT II Power Consumption TDS 210 and TDS 220 TDS 224 Less than 20 W Less than 25 W Fuse Environmental 1A T rating 250 V Temperature Operating 0 C to 50 C Nonoperating 20 C to 60 C Cooling Method Convection Humidity Altitude 40 C or below 41 C to 50 C Operating lt 90 relative humidity lt 60 relative humidity 3 000 m 15 000 m Nonoperating TDS 200 Series Digital Oscilloscope User Manual 97 Appendix A Specifications General Specifications Cont Environmental Random Vibration Operating 0 31 grus from 5 Hz to 500 Hz 10 minutes on each axis Nonoperating 2 46 grms from 5 Hz to 500 Hz 10 minutes on each axis Mechanical Shock Operating 50 g 11 ms half sine Mechanical Size Height 151 4 mm 5 96 in Width 304 8 mm 12 in Depth 120 7 mm 4 75 in Weight approximate When packaged for domestic 3 6 kg 8 0 lbs shipment 98 TDS 200 Series Digital Oscilloscope User Manual Appendix A Specifications General Specifications Cont Certifications and Compliances EC Declaration of Conformity TDS 210 TDS 220 TDS 224
6. Delay Time Accuracy Delta Time Measure ment Accuracy Full Bandwidth Position Range 94 2500 samples for each channel 5 ns div to 5 s div in a 1 2 5 5 sequence 100 ppm over any gt 1 ms time interval Conditions Accuracy Single shot Sample mode 1 sample interval 100 ppm x reading 0 6 ns gt 16 averages 1 sample interval 100 ppm x reading 0 4 ns Sample interval s div 250 5 ns div to 10 ns div 25 ns div to 100 us div 250 us div to 5 s div 4 div x s div to 20 ms 4 div x s div to 50 ms 4 div x s div to 50 s TDS 200 Series Digital Oscilloscope User Manual Appendix A Specifications Specifications Cont Trigger Trigger Sensitivity Edge Trigger Type Trigger Sensitivity Edge Trigger Type typical Coupling Sensitivity DC CH1 CH 2 1 div from DC to 10 MHz CH3 amp CH4 1 5 div from 10 MHz to Full TDS 210 and TDS 220 only EXT 100 mV from DC to 10 MHz 150 mV from 10 MHz to Full EXT 5 500 mV from DC to 10 MHz 750 mV from 10 MHz to Full Coupling Sensitivity AC Same as DC at 50 Hz and above NOISE RE Reduces the DC coupled trigger sensitivity by 2 times for gt 10 mv div to 5 V div HF REJ Same as the DC coupled limit from DC to 7 kHz attenuates signals above 80 kHz LF RE Same as the DC coupled limits for frequencies above 300 kHz attenuates signals below 300 kHz Trigger Level Range Trigger Level Accuracy typical Source
7. Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 USA www Tektronix com TDS 200 Series Digital Oscilloscope User Manual vii Contacting Tektronix viii TDS 200 Series Digital Oscilloscope User Manual BE Getting Started TDS 200 Series Digital Oscilloscopes are small lightweight benchtop packages that you can use to take ground referenced measurements The TDS 210 and TDS 220 oscilloscopes have two channels the TDS 224 has four channels In addition to the list of general features this section covers the following topics How to install your product How to add extended functions How to perform a brief functional check How to compensate probes How to use the self calibration routine How to match your probe attenuation factor NOTE To select a display language push the UTILITY menu button and then push the Language menu box item to select the appropriate language TDS 200 Series Digital Oscilloscope User Manual 1 Getting Started General Features 100 MHz TDS 220 or TDS 224 or 60 MHz TDS 210 bandwidth with selectable 20 MHz bandwidth limit 1 GS s sample rate and 2 500 point record length for each channel Cursors with readout Five automated measurements High resolution high contrast LCD display with temperature compensation and replaceable back light Setup and waveform storage Autoset for quick setup Waveform averaging and peak detection Digital real time oscilloscope D
8. You can also permanently save up to five setups in the memory of the oscilloscope and overwrite setups as needed Recalling a Setup The oscilloscope can recall any of the saved setups or the factory default setup Defaults Factory Setup The oscilloscope is set up for normal operation when it is shipped from the factory You can recall the factory default setup any time you want to operate the oscilloscope using or starting from the factory default settings 22 TDS 200 Series Digital Oscilloscope User Manual Er weWPE Operating Basics The front panel is divided into easy to use functional areas This section provides you with a quick overview of the controls and the information displayed on the screen The next figure shows the front panels for a TDS 210 or TDS 220 and for a TDS 224 oscilloscope i Two CHANNEL SAVE RECALL MEASURE ACQUIRE AUTOSET Tektronix TDS 220 bera REanme oscuoscore Cc O O ppe umu cursor isPLay VERTICAL HORIZONTAL TRIGGER CO sem sem quad vg v no Q Lo O CURSOR CURSOR 2 HOLDOFF CH1 cH2 HORIZONTAL TRIGGER MENU MENU MENU MENU NC VOLTS DIV VOLTS DIV SEC DIV SETLEVELTO sox CO 155E al sv amv sv Se sne TAIGGER VIEW PROSE COMP ov SL ab cH1 EXT TRIG SAVEIRCL MEASURE ACQUIRE Tektronix TDS224 erk Rii nmueosauoscore CICICI Cuor FNsP HORIZONTAL TRIGGER sav CD Tam dros mam no tim mC VERTICAL
9. 1 Push the ACQUIRE button to see the Acquire menu 2 Push the Average menu box button 3 Push the Averages menu box button to see the effects of varying the number of running averages on the waveform display Averaging reduces random noise and makes it easier to see detail in a signal In the example below a ring shows on the rising and falling edges of the signal when the noise is removed TDS 200 Series Digital Oscilloscope User Manual Application Examples Capturing a Single Shot Signal The reliability of a reed relay in a piece of equipment has been poor and you need to investigate the problem You suspect that the relay contacts arc when the relay opens The fastest you can open and close the relay is about once per minute so you need to capture the voltage across the relay as a single shot acquisition To set up for a single shot acquisition do these steps 1 NA wu A WH N Adjust the vertical VOLTS DIV and horizontal SEC DIV to appropriate ranges for the signal you expect to see Push the ACQUIRE button to see the Acquire menu Push the Peak detect button Push the TRIGGER MENU button to see the Trigger menu Push the Mode button to select Single single sequence Push the Slope button to select Rising Use the LEVEL knob to adjust the trigger level to a voltage midway between the open and closed voltages of the relay Ifthe readout a
10. 50 ms change the horizontal position and then change the SEC DIV back to the previous value HORIZONTAL MENU Displays the horizontal menu TDS 200 Series Digital Oscilloscope User Manual 31 Operating Basics SEC DIV Selects the horizontal time div scale factor for the main or the window time base When Window Zone is enabled it changes the width of the window zone by changing the window time base Refer to page 75 for details about creating and using the Window Zone Trigger Controls TRIGGER TRIGGER Eai SET TO 50 LEVEL FORCE TRIG Q HOLDOFF TRIG VIEW TRIGGER C HOLDOFF z m Zz Cc TDS 224 SET LEVEL TO 50 J FORCE TRIGGER J TRIGGER VIEW I TDS 210 and TDS 220 LEVEL and HOLDOFF This control has a dual purpose As an edge trigger level control it sets the amplitude level the signal must cross to cause an acquisition As a holdoff control it sets the amount of time before another trigger event can be accepted Refer to Holdoff on page 13 for more information 32 TDS 200 Series Digital Oscilloscope User Manual Operating Basics TRIGGER MENU Displays the trigger menu SET LEVEL TO 50 The trigger level is set to the vertical midpoint between the peaks of the trigger signal FORCE TRIGGER Starts an acquisition regardless of an adequate trigger signal This button has no effect if the acquisition is already stopped TRIGGER VIEW Displays the trigger waveform in
11. E CH 1 O TDS 210 and TDS 220 io CH1 CH2 3 CH3 CH4 j SLS A A E TDS 224 PROBE COMP Voltage probe compensation output and ground Use this to electrically match the probe to the input circuit Refer to page 6 The probe compensation ground and BNC shields are connected to earth ground Do not connect a voltage source to these ground terminals CH 1 CH 2 CH 3 amp CH 4 Input connectors for waveform display EXT TRIG Input connector for an external trigger source Use the trigger menu to select the trigger source TDS 200 Series Digital Oscilloscope User Manual 35 Operating Basics 36 TDS 200 Series Digital Oscilloscope User Manual SS Sa Application Examples This section presents a series of application examples These simplified examples highlight the features of the oscilloscope and give you ideas for using it to solve your own test problems m Taking simple measurements Using Autoset Using the Measure menu to take automatic measurements Measuring two signals and calculating gain m Taking cursor measurements Measuring pulse width Measuring rise time Measuring ring frequency and ring amplitude m Analyzing signal detail Looking at a noisy signal Using the average function to separate a signal from noise m Triggering on a video signal Triggering on video fields and video lines Using the window function to see waveform details Triggering on odd or even video fields m Analyzing a differential communication signal
12. Language English Selects the display language of the French operating system German Italian Spanish Portuguese Japanese Korean Simplified Chinese Traditional Chinese TDS 200 Series Digital Oscilloscope User Manual 87 Reference Key Points Self Calibration The self calibration routine optimizes the oscilloscope accuracy for the ambient temperature For maximum accuracy perform a self cal if the ambient temperature changes by 5 C or more To compensate the signal path disconnect any probes or cables from the input connectors Then select Do Self Cal to confirm that you are ready to proceed System Status Selecting System Status from the utility menu displays the menus available for obtaining a list of control settings for each group of instrument controls Push any front panel menu button to remove the status screen Menu Comments Horizontal Lists horizontal parameters of channels Vertical Lists vertical parameters of channels Trigger Lists trigger parameters Misc Lists the model of the instrument and the software version number If an extension module is installed lists values of the communications parameters 88 TDS 200 Series Digital Oscilloscope User Manual Reference Vertical You can use the vertical controls to display waveforms adjust vertical scale and position and set input parameters Refer to page 76 for the vertical math descriptions Channel Vertical Menus The
13. Radio Button Page Selection SAVEFREC SAVE REC Wa ms Recall Factory DISPLAY ACOUIRE Coupling Persist st alla Ott Peak detect Coupling ER Average Setup 1l Contrast Averages Increase E Contrast Decrease TDS 200 Series Digital Oscilloscope User Manual 27 Operating Basics Waveform Displays Obtaining a waveform display is dependent on many instrument settings Once you obtain a waveform you can take your measure ments But the appearance of these waveforms also provides key information about the waveform Depending on the type waveforms will be displayed in three different styles black gray and broken Ee E aes lt 2 Fi i gm Ea een ES EE EP Ra PR 3 1 A solid black waveform indicates a live waveform display The waveform remains black when the acquisition is stopped if no controls are changed that make the display accuracy uncertain Changing the vertical and horizontal controls is allowed on stopped acquisitions 28 TDS 200 Series Digital Oscilloscope User Manual Operating Basics 2 Reference waveforms and waveforms with persistence applied appear gray 3 A broken line appearance indicates the waveform display accuracy is uncertain This is the result of stopping the acquisi tion and then changing a control setting that the instrument cannot modify the displayed waveform to match For example changing the trigger controls on a stopped acquisi
14. Range Internal 8 divisions from center of screen TDS 210 and TDS 220 only EXT 1 6V EXT 5 8 V Accuracies are for signals having rise and fall times gt 20 ns Source Accuracy Internal 0 2 div x volts div within 4 divisions from center screen TDS 210 and TDS 220 only EXT 6 of setting 40 mV EXT 5 6 of setting 200 mV TDS 200 Series Digital Oscilloscope User Manual 95 Appendix A Specifications Specifications Cont Trigger SET LEVEL TO 50 Operates with input signals gt 50 Hz typical Default Settings Video Trigger Sensitivity Video Trigger Type typical Trigger mode is Auto and Coupling is AC Composite video signal Source Range Internal Pk pk amplitude of 2 divisions TDS 210 and TDS 220 only EXT 400 mV EXT 5 2V Signal Formats and Field Rates Video Supports NTSC PAL and SECAM broadcast systems for any field or any line Trigger Type Holdoff Range 500 ns to 10s Measurements Cursors Voltage difference between cursors AV Time difference between cursors AT Reciprocal of AT in Hertz 1 AT Automated Measure ments Cycle RMS Mean Pk Pk Period Frequency 96 TDS 200 Series Digital Oscilloscope User Manual Appendix A Specifications General Specifications Display Display Type Display Resolution Display Contrast Backlight Intensity typical 5 7 in 145 mm diagonal liquid crystal 320 horizontal by 240 vertical pixels
15. Sequence is complete when one acquisition is acquired Sample or Peak Detect Sequence is complete when the defined number of acquisitions is reached refer to page 66 Average AC Line Source The AC Line trigger source uses the power signal as the trigger source Trigger coupling is set to DC and the trigger level to 0 volts 84 TDS 200 Series Digital Oscilloscope User Manual Reference Coupling Coupling allows you to filter the trigger signal used to trigger an acquisition m DC passes all components of the signal m AC blocks DC components and attenuates signals below 10 Hz m Noise Reject passes all components of the signal but increases the peak to peak signal required m HF Reject attenuates the high frequency components above 80 kHz m LF Reject blocks the DC component and attenuates the low frequency components below 300 kHz Pretrigger The trigger position is typically set at the horizontal center of the screen In this case you are able to view five divisions of pretrigger information Adjusting the Horizontal Position of the waveform allows you to see more or less pretrigger information Trigger View Pushing TRIGGER VIEW displays the trigger waveform until the button is released When in Trigger View mode all front panel buttons are disabled except HARDCOPY TDS 200 Series Digital Oscilloscope User Manual 85 Reference Video Trigger Choose video triggering to trigger on fields or the line
16. Using math functions m Viewing impedance changes in a network Using XY mode Using persistence TDS 200 Series Digital Oscilloscope User Manual 37 Application Examples Taking Simple Measurements 38 You need to see a signal in a circuit but you do not know the amplitude or frequency of the signal You want to quickly display the signal and measure the frequency period and peak to peak amplitude CH1 Using Autoset To quickly display a signal do these steps 1 Connect the channel 1 probe to the signal 2 Push the AUTOSET button The oscilloscope sets the vertical horizontal and trigger controls automatically If you want to optimize the display of the waveform you can manually adjust these controls When you use more than one channel the autoset function sets the vertical controls for each channel and uses the lowest numbered active channel to set the horizontal and trigger controls TDS 200 Series Digital Oscilloscope User Manual Application Examples Taking Automatic Measurements The oscilloscope can take automatic measurements of most displayed signals To measure signal frequency period and peak to peak amplitude do these steps Push the MEASURE button to see the Measure menu Push the top menu box button to select Source Select CH1 for the first three measurements Push the top menu box button to select Type Push the first CH1 menu box button to select Fre
17. and TDS 220 Oscilloscopes Firmware Below V 2 00 with a TDS2MM 0 0 00 Meas Utes sis ssa eat ale Seca Ris sabes age ete a SavelRecall asi nena a sae te Bee bo he wnt E aE Trigger Controls sussa tap bet ee bias Sit gue ioe UY shee atts es ek eee ta bos ie pad ates atid ed eels Vertical su is cx ace Rare a a danas bustle PAIS beet EER Hard Copy missoes si isis ects 3 oes Ega air E ies bit gees Appendix A Specifications Appendix B Accessories 0c cece cece cee ceees Appendix C General Care and Cleaning Glossary sus ds 28 vae a Moa E EAT ssa We ete SI ease oie os TDS 200 Series Digital Oscilloscope User Manual 103 105 111 Table of Contents iv TDS 200 Series Digital Oscilloscope User Manual EEE PE 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 av
18. 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 These symbols may appear on the product a A Protective Ground Measurment CAUTION Measurment Earth Terminal Ground Terminal Refer to Manual Input Terminal TDS 200 Series Digital Oscilloscope User Manual ee SS Contacting Tektronix Product support Service support For other information To write us Web site 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
19. cursors 21 71 TDS 200 Series Digital Oscilloscope User Manual Index trigger coupling 14 83 85 edge 11 83 external 86 field 86 holdoff 13 32 75 level 15 32 75 83 marker 25 readout 25 menu 83 modes 11 Auto 12 84 Normal 12 84 Single 12 84 position 14 position marker 25 slope 14 83 source 10 83 status 25 88 sync 86 types 11 video 86 view 33 85 86 TRIGGER MENU button 33 trigger position readout 25 trigger slope indicator 25 trigger source 10 26 TRIGGER VIEW button 33 85 triggering basic concepts 10 U utility menu 87 UTILITY button 34 V vectors 72 vertical menu 89 position 17 scale 17 status 88 video trigger application example 53 voltage cursors 21 71 volts div coarse 89 fine 89 math 78 VOLTS DIV control 30 W waveform See also applications acquiring data 15 appearance 28 compression 75 displays 28 expansion 75 off 90 saving and recalling 81 taking measurements 20 window time base 32 74 window zone 26 75 X XY 72 application example 63 display 73 Y YT 72 TDS 200 Series Digital Oscilloscope User Manual 115 Index 116 TDS 200 Series Digital Oscilloscope User Manual
20. difference delta between the cursors is displayed here Cursor 1 Displays cursor 1 location time is referenced to the trigger position voltage is referenced to ground Cursor 2 Displays cursor 2 location time is referenced to the trigger position voltage is referenced to ground Only available on the TDS 224 oscilloscope Key Points Cursor Movement Use the CH 1 and CH 2 Vertical Position knobs to move cursors 1 and 2 You can move the cursors only while the Cursor menu is displayed TDS 200 Series Digital Oscilloscope User Manual 71 Reference NW NVA Voltage cursors Time cursors Display 72 Push the DISPLAY button to choose how waveforms are presented and to change the appearance of the entire display Comments Vectors fills the space between adjacent sample points in the display Vectors Dots Dots displays only the sample points OFF 1 sec 2 sec 5 sec Infinite Sets the length of time each displayed sample point remains displayed Persist YT format displays the vertical voltage in relation to time horizontal scale Format XY format displays channel 1 in the horizontal axis and channel 2 in the vertical axis Contrast Increase Darkens the black or gray areas of the display Lightens the white areas of the display Contrast Decrease TDS 200 Series Digital Oscilloscope User Manual Reference Ke
21. gt A position A Posmon A position 4 Posmon z z v Vv nC enum onson osea C CURSOR 1 CURSOR 2 CH2 CH3 CH4 o E VOLTS DIV VOLTS DIV VOLTS DIV VOLTS DIV pe Ne Ne Nec cH1 cH3 TDS 200 Series Digital Oscilloscope User Manual 23 Operating Basics Display Area In addition to displaying waveforms the display is filled with many details about the waveform and the instrument control settings 1 2 3 4 Trig d Pos 11 30ms i RS SS RS Ch2 200mV M 500ms 12 Chi 50QmV 1 Icon display shows acquisition mode alr Sample mode mal Peak detect mode J L Average mode 24 TDS 200 Series Digital Oscilloscope User Manual Operating Basics 2 Trigger status indicates the following C Armed The instrument is acquiring pretrigger data All triggers are ignored in this state B Ready All pretrigger data has been acquired and the instrument is ready to accept a trigger Tria d The instrument has seen a trigger and is acquiring the posttrigger data R Auto The instrument is in auto mode and is acquiring waveforms in the absence of triggers C Scan The instrument is acquiring and displaying waveform data continuously in scan mode Stop The instrument has stopped acquiring waveform data 3 Marker shows horizontal trigger position This is adjusted by the Horizontal Position control 4 Readout shows the time differ
22. place of the channel waveform while the TRIGGER VIEW button is held down You can use this to see how the trigger settings affect the trigger signal such as trigger coupling Menu and Control Buttons SAVE RECALL MEASURE ACQUIRE AUTOSET O O O UTILITY CURSOR DISPLAY HARDCOPY RUN STOP TDS 210 and TDS 220 SAVE RCL MEASURE ACQUIRE C HaRDcoPY AUTOSET RUN STOP UTILITY CURSOR DISPLAY E TDS 224 TDS 200 Series Digital Oscilloscope User Manual 33 Operating Basics 34 SAVE RECALL Displays the save recall menu for setups and waveforms MEASURE Displays the automated measurements menu ACQUIRE Displays the acquisition menu DISPLAY Displays the display menu CURSOR Displays the cursor menu Vertical Position controls adjust cursor position while displaying the cursor menu and the cursors are turned on Cursors remain displayed unless turned off after leaving the cursor menu but are not adjustable UTILITY Displays the utility menus AUTOSET Automatically sets the instrument controls to produce a usable display of the input signal HARDCOPY Starts print operations An extension module with a Centronics RS 232 or GPIB port is required Refer to Optional Accessories on page 101 RUN STOP Starts and stops waveform acquisition TDS 200 Series Digital Oscilloscope User Manual Operating Basics Connectors PROBE COMP
23. screen center Horizontal position changes the point relative to the trigger where the waveform appears on the center of the screen Menu Comments Main The main horizontal time base setting is used to display the waveform Window Two cursors define a window zone Zone Adjust the window zone with the Horizon tal Position and SEC DIV controls Window Changes the display to show the wave form segment expanded to screen width within the window zone Trig knob Level Selects whether the Trigger Level knob Holdoff adjusts the trigger level volts or holdoff time sec The holdoff value is displayed NOTE You can push the Window menu box button to switch between an entire waveform display and an enlarged more detailed part of it TDS 200 Series Digital Oscilloscope User Manual Reference Key Points SEC DIV If waveform acquisition is stopped using the RUN STOP button the SEC DIV control expands or compresses the waveform Scan Mode Display When the SEC DIV control is set to 100 ms div or slower and the trigger mode is set to Auto the instrument enters the scan acquisition mode In this mode the waveform display updates from left to right There is no trigger or horizontal control of waveforms during scan mode Window Zone Use the window zone to expand a segment of a waveform to see more detail The Window time base setting cannot be set slower than the Main time base setting Vertical bars defi
24. select Field across the screen Push the HORIZONTAL MENU button to see the Main menu Push the Trig knob menu box button to select Holdoff Adjust the HOLDOFF knob to an appropriate period You can use about 21 ms for NTSC and PAL video Triggering on Video Lines You can also look at the video lines in the field To trigger on the lines do these steps 1 54 Push the TRIGGER MENU button to see the Trigger menu 2 Push the top menu box button to select Video 3 4 Adjust the horizontal SEC DIV knob to see a complete video line Push the Syne menu box button to select Line across the screen TDS 200 Series Digital Oscilloscope User Manual Application Examples Incoming video signal G 75 Q terminator Using the Window Function to See Waveform Details You can use the window function to examine a specific portion of a waveform without changing the main display TDS 200 Series Digital Oscilloscope User Manual 55 Application Examples If you want to view the color burst in the previous waveform in more detail without changing the main display do these steps 1 Push the HORIZONTAL MENU button to see the Horizontal menu and select Main Adjust the horizontal SEC DIV knob to select 50 ms Push the Trig knob menu box button to select Holdoff Adjust the HOLDOFF kn
25. time in the holdoff period TDS 200 Series Digital Oscilloscope User Manual 13 Basic Concepts Coupling Trigger coupling determines what part of the signal passes on to the trigger circuit Coupling types include DC AC Noise Rejection High Frequency Rejection and Low Frequency Rejection DC DC coupling passes both AC and DC components AC AC coupling blocks DC components Noise Rejection Noise Reject coupling lowers the trigger sensitivity and requires more signal amplitude for stable triggering This reduces the chance of falsely triggering on noise High Frequency Rejection HF Reject coupling blocks the high frequency portion and passes on only the low frequency components Low Frequency Rejection LF Reject coupling does the opposite of high frequency rejection Position The horizontal position control establishes the time between the trigger and the screen center Refer to Horizontal Scale and Position Pretrigger Information on page 17 for more information on how to use this control to position the trigger Slope and Level The Slope and Level controls help to define the trigger The Slope control determines whether the oscilloscope finds the trigger point on the rising or the falling edge of a signal To access the trigger slope control press the TRIGGER Menu button select Edge and use the Slope button to select Rising or Falling 14 TDS 200 Series Digital Oscilloscope User Manual Basic Concepts
26. waveform due to aliasing Sampled points One way to check for aliasing is to slowly change the horizontal scale with the SEC DIV knob If the shape of the waveform changes drastically you may have aliasing To represent a signal accurately and avoid aliasing you must sample the signal more than twice as fast as the highest frequency compo nent For example a signal with frequency components of 5 MHz would need to be sampled at 10 Megasamples per second or faster 18 TDS 200 Series Digital Oscilloscope User Manual Basic Concepts The next table lists the time bases that you should use to avoid aliasing at various frequencies and the respective sample rate Samples Maximum pm pene Maximum Time base per second a Time base er second frequency 1 0 us 250 0MS s 125 0M 25 0 kHz 2 5 us 100 0 MS s 50 0 MHz 10 0 ms 25 0 kS s 12 5 kHz 5 0 us 50 0 MS s 25 0 MHz 5 0 kHz 10 0us 25 0MS s 12 5 Mkz 2 5 kHz 25 0us 10 0 MS s 5 0 MHz 100 0 ms 0 ms 2 5 25KS 1 25 kHz 50 0us 5 0 MS s 2 5 M ers ee 500 0 Hz 100 0us 2 5 MS s 1 25 MHz 250 0 Hz 250 0us 1 0MS s 500 0kH 125 0 Hz 500 0 us 500 0kS s 250 0 kHz 50 0 Hz 1 0 ms 250 0 kS s 125 0 kHz 5 05 50 0 S s 25 0 Hz 2 5ms 100 0 kS s 50 0 kHz There are various ways to prevent aliasing adjust the horizontal scale push the AUTOSET button or change the acquisition mode NOTE If aliasing occurs change to the Peak Detect acquisi
27. 0 0 ee eee eee 22 TDS 200 Series Digital Oscilloscope User Manual i Table of Contents Operating Basics cece eee e cece cence ee ces Display Atrea es irmas riso intao ae pio ane bake bbe Using the Menu System cn Circular List Menu Boxes 0 0000 eee Action Button Menu Boxes 000000 eee eee Radio Button Menu Boxes 0000 cece eee Page Selection Menu Boxes 00055 Waveform Displays 0 0 eee eee eee eee Vertical Controls 2 0 0 0 cee cee ee eens Horizontal Controls 0 eee eee Trigger Controls s kia heats ede seed DUAS Menu and Control Buttons 0 0 0 0 eee ee eee Connectors na a ae eee eee teens Application Examples ccc eee ee cece cence Taking Simple Measurements 004 Using Autoset essi mis cai et rit ee ee ee ae Taking Automatic Measurements 2 04 Measuring Two Signals 0 00000 0005 Taking Cursor Measurements 0 00 0000 Measuring Pulse Width 0 00 e eee eee eee Measuring Rise Time 0 cece eee ee eens Measuring Ring Frequency 0005 Measuring Ring Amplitude 0000 Analyzing Signal Detail 0 00 00 000008 Looking at a Noisy Signal 0 000 Separating the Signal from Noise Capturing a Single Shot Signal
28. 99 Appendix A Specifications General Specifications Cont Certifications and Compliances Pollution Degree 2 Do not operate in environments where conductive pollutants may be present Overvoltage Category Category Examples of Products in this Category CAT Ill Distribution level mains fixed installation CAT Il Local level mains appliances portable equipment CAT Signal levels in special equipment or parts of equipment telecommunications electronics Adjustment Interval The recommended calibration interval is one year 100 TDS 200 Series Digital Oscilloscope User Manual Appendix B Accessories All accessories standard and optional are available by contacting your local Tektronix field office Standard Accessories eS P6112 10X Passive Probes The P6112 10X passive probes have a 100 MHz bandwidth and a rating of 300 V CAT II Optional Accessories e Jo Ee e Jo ei Jo oo TDS 200 Series Oscilloscope User Manual A single User Manual is included R efer to the Optional Accessories for a complete list of available language manuals TDS2MM Measurement Extension Module The TDS2MM module plugs directly into the rear panel of any TDS 200 Series oscilloscope This module provides full GPIB and RS 232 compatibility and a Centronics port for hard copy output The module allows measurement of rise time fall time and positive and negativ
29. CH3 CH4 ooo Channels 3 and 4 are added together TDS 224 only NOTE The optional TDS2MM measurement extension module adds the FFT feature to the oscilloscope See the TDS 200 Series Extension Modules Instructions Manual TDS 200 Series Digital Oscilloscope User Manual Reference TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 without a TDS2MM Menu Comments CH1 CH2 The channel 2 waveform is subtracted from the channel 1 waveform CH2 CH1 The channel 1 waveform is subtracted from the channel 2 waveform CH1 CH2 Channels 1 and 2 are added together CH1 The channel 1 signal display is inverted Inverted cannot be inverted if channel 2 is inverted CH2 The channel 2 signal display is inverted Inverted cannot be inverted if channel 1 is inverted TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 with a TDS2MM The TDS2MM Module when used with a TDS 210 or TDS 220 changes the following math operations m The TDS2MM Module does not have the CHI CH2 and CH2 CH1 math functions To do the same functions invert the channel you want to subtract using the CHI or CH2 menu and then select the CH1 CH2 math function TDS 200 Series Digital Oscilloscope User Manual 77 Reference Default channel TDS2MM channel subtraction subtraction Comments CH1 CH2 CHIH CH2 CH2 means invert channel 2 CH2 CH1 CH1 CH2 CH1 means invert channel 1 m The TDS2MM Modul
30. List menu box appears with a title on top with the selected choice listed below in reverse video For example you can push the menu box button to cycle through the vertical coupling choices in the CH1 Menu 26 TDS 200 Series Digital Oscilloscope User Manual Operating Basics Action Button Menu Boxes An Action Button menu box displays the name of the action For example you can use the two lowest menu boxes in the DISPLAY menu to increase or decrease the contrast Radio Button Menu Boxes Radio Button menu boxes are separated by dashed lines The name of the selected menu box displays in reverse video For example you can use the top three menu boxes in the ACQUIRE menu to select an acquisition mode Page Selection Menu Boxes A Page Selection menu box contains two menus for a single button on the front panel with the selected menu displayed in reverse video Each time you press the top menu box button to toggle between the two menus the menu boxes below also change For example when you press the SAVE RECALL front panel button the top Page Selection menu contains the names of two menus Setups and Waveforms When you select the Setups menu you can use the remaining menu boxes to save or recall setups When you select the Waveforms menu you can use the remaining menu boxes to save or recall waveforms The SAVE RECALL MEASURE and TRIGGER front panel buttons display Page Selection menu boxes Circular List Action Button
31. Oscilloscope User Manual Reference Trigger Controls Two types of triggering are available Edge and Video A different set of menus display for each trigger type Edge Trigger Use Edge triggering to trigger on the edge of the input signal at the trigger threshold Menu Edge Slope Source Comments With E dge highlighted the rising or falling edge of the input signal is used for the trigger Rising Selectto trigger on either the rising or Falling falling edge of the signal CH1 Select the input source as the trigger CH2 signal CH3 CH4 EXT EXT 5 AC Line Mode Auto Select the type of triggering Normal Single Coupling AC Selects the components of the trigger DC Signal applied to the trigger circuitry Noise Reject HF Reject LF Reject Only available on the TDS 224 oscilloscope Only available on the TDS 210 and TDS 220 oscilloscopes TDS 200 Series Digital Oscilloscope User Manual 83 Reference Key Points Normal and Auto Mode Use Normal trigger mode to trigger only on a valid trigger Use Auto trigger mode to let the acquisition free run in the absence of a valid trigger Auto allows an untriggered scanning waveform at 100 ms div or slower time base settings Single Mode Use Single trigger mode to capture a single acquisition of an event The content of a single acquisition sequence depends on the acquisition mode Acquisition Mode Single Acquisition Sequence
32. RTICULAR PURPOSE IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES WARRANTY SUMMARY P6112 Probe Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If a product proves defective within the respective period Tektronix will provide repair or replacement as described in the complete warranty statement To arrange for service or obtain a copy of the complete warranty statement please contact your nearest Tektronix sales and service office EXCEPT AS PROVIDED IN THIS SUMMARY OR THE APPLICABLE WARRANTY STATEMENT TEKTRONIX MAKES NO WARRANTY OF ANY KIND EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES SSF Table of Contents General Safety Summary 0 cece eee eee eees v Contacting Tektronix sssessssssosessssesssso vii Getting Started 20 e oi E cee ce cee AS 1 General Features 5 6 A maan Oia tase RA A seams 2 Installations 53 aa ea teens Ashes RR Ca E ET AO 3 Power Cord i gen cineca snanuiate gives paca sages 1 3 Security Loop 0 0 0 ccc cece eee eens 3 Extension Modules 0 0 c eee eee eee eee 4 Functional Check 0 0000 c eee ee eee 5 Probe Compensation
33. The Level control determines where on the edge the trigger point occurs To access the trigger level control press the HORIZONTAL Menu button select Level and use the LEVEL knob to change the value P ositive going Negative going edge edge Trigger level can be adjusted vertically Trigger slope can be positive or negative Acquiring Data When you acquire analog data the oscilloscope converts it into a digital form You can acquire data using three different acquisition modes The timebase setting affects how rapidly data is acquired Acquisition Modes There are three acquisition modes Sample Peak Detect and Average Sample In this acquisition mode the oscilloscope samples the signal in evenly spaced intervals to construct the waveform This mode accurately represents analog signals most of the time TDS 200 Series Digital Oscilloscope User Manual 15 Basic Concepts However this mode does not acquire rapid variations in the analog signal that may occur between samples This can result in aliasing described on page 18 and may cause narrow pulses to be missed In these cases you should use the Peak Detect mode to acquire data Peak Detect In this acquisition mode the oscilloscope finds the highest and lowest values of the input signal over a sample interval and uses these values to display the waveform In this way the oscilloscope can acquire and display narrow pulses which may have otherwise be
34. User Manual TDS 200 Series Digital Real Time Oscilloscope 071 0398 01 HA AE T T 071039801 User Manual Tektronix 7 TDS 200 Series Digital Real Time Oscilloscope 071 0398 01 This document supports firmware version FV v1 00 and above Ce Copyright Tektronix Inc All rights reserved 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 Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY SUMMARY TDS 200 Series Digitizing Oscilloscope Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of three 3 years from the date of shipment from an authorized Tektronix distributor If a product or CRT proves defective within the respective period Tektronix will provide repair or replacement as described in the complete warranty statement To arrange for service or obtain a copy of the complete warranty statement please contact your nearest Tektronix sales and service office EXCEPT AS PROVIDED IN THIS SUMMARY OR THE APPLICABLE WARRANTY STATEMENT TEKTRONIX MAKES NO WARRANTY OF ANY KIND EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PA
35. X passive probe Rise Time at BNC TDS 210 TDS 220 and TDS 224 typical lt 5 8 ns lt 35 ns Peak Detect Captures 50 or greater amplitude of pulses gt 10 ns wide Response 5 s div to 5 us div in the center 6 vertical divisions DC Gain Accuracy 2 mV div to 5 mV div 4 for Sample or Average acquisition mode 10 mV div and larger 3 for Sample or Average acquisition mode The oscilloscope reverts to Sample mode when the sec div horizontal scale is set from 2 5 us div to 5 ns div The Sample mode can still capture 10 ns glitches TDS 200 Series Digital Oscilloscope User Manual 93 Appendix A Specifications Specifications Vertical DC Measurement Ac curacy Average Ac quisition Mode Measurement Type Accuracy 4 x reading 0 1 div 1 mV 3 x reading vertical position 1 of vertical position 0 2 div Average of gt 16 waveforms with vertical position at zero Average of gt 16 waveforms with vertical position not at zero Add 2 mV for settings from 2 mV div to 200 mV div Add 50 mV for settings from gt 200 mV div to 5 V div Delta Volts Measure ment Accuracy Aver age Acquisition Mode Horizontal Delta volts between any two averages of gt 16 waveforms acquired under same setup and ambient conditions 3 x reading 0 05 div Sample Rate Range 50 S s to 1 GS s Waveform Interpolation sin x x Record Length SEC DIV Range Sample Rate and
36. button of the channel you are using and then press the menu selection next to Probe until the correct setting is displayed This setting remains in effect until changed again NOTE The default Probe attenuation setting is 10X when the oscilloscope is shipped 8 TDS 200 Series Digital Oscilloscope User Manual Ee Basic Concepts To use your oscilloscope effectively you must understand the following basic concepts m Triggering m Acquiring data Scaling and positioning waveforms m Measuring waveforms E Setting Up the oscilloscope The figure below shows a block diagram of the various functions of an oscilloscope and their relationship to each other Each Vertical Acquire data Waveform channel gain and mode and record Display position time base 2500 points Computer gt interface TDS2CM Y Eisa Trigger AC Line gge TDS 200 Series Digital Oscilloscope User Manual 9 Basic Concepts Triggering 10 The trigger determines when the oscilloscope starts to acquire data and display a waveform When a trigger is set up properly it can convert unstable displays or blank screens into meaningful waveforms Triggered waveform Untriggered waveforms When the oscilloscope starts to acquire a waveform it collects enough data so that it can draw the wavefor
37. ch channel a Push the top menu box button to select Type b Push the CH1 menu box button to select Pk Pk c Push the CH2 menu box button to select Pk Pk 3 Read the peak to peak amplitudes for channel 1 and channel 2 in the menu display 4 Calculate the amplifier gain using the following equations Gain output amplitude input amplitude Gain dB 20 x log Gain TDS 200 Series Digital Oscilloscope User Manual 41 Application Examples Taking Cursor Measurements You can use the cursors to quickly take time and voltage measure ments on a waveform 42 Measuring Pulse Width You are analyzing a pulse waveform and you want to know the width of the pulse To measure the width of a pulse using the time cursors do these steps 1 Push the CURSOR button to see the Cursor menu Push the top menu box button to select Time 2 3 4 Push the Source menu box button to select CH1 Use the CURSOR 1 knob to place a cursor on the rising edge of the pulse Use the CURSOR 2 knob to place the remaining cursor on the falling edge of the pulse You can see the following measurements in the Cursor menu m The time at Cursor 1 relative to the trigger m The time at Cursor 2 relative to the trigger m The delta time which is the pulse width measurement TDS 200 Series Digital Oscilloscope User Manual Application Examples ErQLO us 1 435kHz Cursor 1 1 330ms Curso
38. d push the CH 1 MENU button 2 Use the VERTICAL POSITION knob to place the waveform on the middle graticule line position 0 Adjust the VERTICAL VOLTS DIV knob to 500 mV Push the Coupling menu box button to select DC Push the Probe menu box button to select 1X Push the TRIGGER MENU button to see the Trigger menu Push the top menu box button to select VIDEO Push the Polarity menu box button to select Normal Sr Rs SEN O RT O Push the Source menu box button to select CH1 10 Push the Syne menu box button to select Field 11 Push the ACQUIRE button to see the Acquire menu 12 Set SEC DIV to 10 us 13 Adjust the HORIZONTAL POSITION knob to about 1 5 ms 14 Push the HORIZONTAL MENU button to see the Main menu TDS 200 Series Digital Oscilloscope User Manual Application Examples 15 Push the Trig knob menu box button to select Holdoff 16 Adjust the HOLDOFF knob to 21 ms for NTSC and PAL video NOTE To make a large adjustment to the holdoff period adjust the SEC DIV knob to 50 ms adjust the HOLDOFF knob to 21 ms and readjust the SEC DIV back to the previous value Now the oscilloscope only triggers on an odd or an even field but not both and the line information is stable With 500 ns of holdoff time you cannot With 21 ms of holdoff time you can see any line information because the easily see one clear line alternating fields overlap TDS 200 Series Digital Oscilloscope User Manual 59 Ap
39. e moves the channel invert function from the MATH menu to the Vertical CH1 and CH2 menus Key Points VOLTS DIV Use the VOLTS DIV control to scale the waveforms of the channels The math waveform is the visual sum or difference of the channel waveforms Channel Display for a TDS 210 or TDS 220 Firmware Below V 2 00 Displaying a math waveform automatically removes the display of channels used to create the math waveform Math operations are turned off if a channel used in the operation is turned on NOTE You can push the menu box button of the enabled math operation on a TDS 210 or TDS 220 to switch between the math waveform and the channels used to create the math waveform 78 TDS 200 Series Digital Oscilloscope User Manual Reference Math Operations Only one math operation is allowed Using the subtraction selection eliminates the need to first invert and then add the waveform for subtraction operations Measure Push the MEASURE button to access the automated measurement capabilities There are five measurements available and the ability to display up to four at a time Press the top menu button to display the Source or the Type menu You can choose the channel on which to take a measurement in the Source menu You can choose the type of measurement to take Freq Period Mean Pk Pk Cyc RMS and None in the Type menu RE Source Type 4 gt Hz Readout gt 2 Source menu bo
40. e pulse width The module also provides Fast Fourier Transform FFT TDS2CM Communications Extension Module The TDS2CM Communications module plugs directly into the rear panel of any TDS 200 Series oscilloscope This module provides full GPIB and RS 232 compatibility and a Centronics port for hard copy output TDS 200 Series Digital Oscilloscope User Manual 101 Appendix B Accessories Optional Accessories Cont OOO J TDS 210 amp TDS 220 OOO Ssess5 CMM O DO OQ oO o 80 E O 0 0 0 olololo OIOIOIO UQOOOO TDS 224 p 102 RM200 Rackmount Kit The RM200 Rackmount Kit lets you install a TDS 200 Series oscilloscope into an industry standard 19 inch rack The rackmount kit requires seven inches of vertical rack space You can turn the oscilloscope power on or off from the front of the rackmount kit The rackmount kit does not have slide out capability TDS 200 Series Digital Oscilloscope Service Manual The service manual 071 0492 XX English provides module level repair information TDS 200 Series Digital Oscilloscope User Manuals The User manual is available in these languages English 071 0398 XX French 071 0400 XX Italian 071 0401 XX German 071 0402 XX Spanish 071 0399 XX Japanese 071 0405 XX Portuguese 071 0403 XX Simplified Chinese 071 0406 XX Traditional Chinese 071 0407 XX Korean 071 0408 XX Russian 071 0404 XX
41. e signals For a more stable display use the Run Stop button to control the acquisition of the waveform Each time you push the Run Stop button the instrument acquires a snapshot of the digital data stream You can use the cursors or automatic measurements to analyze the waveform or you can store the waveform to analyze later TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 without a TDS2MM Press the CHI CH2 menu box button to display a new waveform that is the difference of the signals TDS 210 and TDS 220 Oscilloscopes Firmware Below V 2 00 with a TDS2MM Do these steps 1 Push the CH2 MENU button and then push the CH2 Inverted menu box button to invert the signal on channel 2 2 Push the MATH MENU button and then push the CH1 CH2 menu box button to display a new waveform that is the difference of the two signals TDS 200 Series Digital Oscilloscope User Manual 61 62 Application Examples Viewing Impedance Changes in a Network You have designed a circuit that needs to operate over a wide temperature range You need to evaluate the stability of the circuit as the ambient temperature is changed Connect the oscilloscope to monitor the input and output of the circuit and capture the changes that occur as you vary the tempera ture Circuit CH1 CH2 Go TDS 200 Series Digital Oscilloscope User Manual Application E
42. ements 38 autoset using 38 averaging using 48 calculating amplifier gain 41 capturing a single shot signal 49 cursors using 42 looking at a noisy signal 47 measuring propagation delay 51 measuring pulse width 42 measuring ring amplitude 46 measuring ring frequency 45 measuring rise time 43 measuring two signals 40 optimizing the acquisition 50 peak detect using 47 reducing noise 48 taking automatic measurements 39 taking cursor measurements 42 triggering on a video signal 53 triggering on odd or even video fields 57 triggering on video fields 54 triggering on video lines 54 using persistence 63 using the math functions 61 using the window function 55 using xy mode 63 viewing impedance changes in a network 62 attenuation probe 89 auto trigger 12 84 automated measurements 21 AUTOSET 22 actions 70 button 34 70 average 16 66 69 bandwidth limit 89 basic concepts 9 broken waveforms 28 buttons trigger view 33 C calibration 87 Centronics 2 101 CH 1 connector 35 MENU button 30 TDS 200 Series Digital Oscilloscope User Manual 111 Index CH 2 connector 35 MENU button 30 CH 3 connector 35 MENU button 30 CH 4 connector 35 MENU button 30 channel scale 26 cleaning 103 coarse resolution 89 compensation probe 6 35 signal path 88 connectors 35 CH 1 35 CH 2 35 CH 3 35 CH 4 35 EXT TRIG 35 PROBE COMP 35 contrast 72 coupling tr
43. en missed in Sample mode Noise will appear to be higher in this mode Average In this acquisition mode the oscilloscope acquires several waveforms averages them and displays the resulting waveform You can use this mode to reduce random noise Time Base The oscilloscope digitizes waveforms by acquiring the value of an input signal at discrete points The time base allows you to control how often the values are digitized To adjust the time base to a horizontal scale that suits your purpose use the SEC DIV knob Scaling and Positioning Waveforms You can change the display of waveforms by adjusting their scale and position When you change the scale the waveform display will increase or decrease in size When you change the position the waveform will move up down right or left 16 TDS 200 Series Digital Oscilloscope User Manual Basic Concepts The channel reference indicator located on the left of the graticule identifies each waveform on the display The indicator points to the ground level of the waveform record Vertical Scale and Position You can change the vertical position of waveforms by moving them up or down on the display To compare data you can align a waveform above another or you can align waveforms on top of each other You can change the vertical scale of a waveform The waveform display will contract or expand about the ground level Horizontal Scale and Position Pretrigger Information Yo
44. ence between the center graticule and horizontal trigger position Center screen equals zero 5 Marker shows trigger level 6 Readout shows numeric value of the trigger level 7 Icon shows selected trigger type as follows J Edge trigger for the rising edge Edge trigger for the falling edge w Video trigger for line sync wi Video trigger for field sync TDS 200 Series Digital Oscilloscope User Manual 25 Operating Basics 8 Readout shows trigger source used for triggering 9 Readout shows window time base setting if it is in use 10 Readout shows main time base setting 11 Readouts show the vertical scale factors of the channels 12 Display area shows on line messages momentarily 13 On screen markers show the ground reference points of the displayed waveforms No marker indicates the channel is not displayed Using the Menu System The user interface of the TDS 200 series oscilloscopes was designed for easy access to specialized functions through the menu structure When you press a menu button on the front panel the associated menu title displays at the top right of the screen There can be up to five menu boxes below the menu title To the right of each menu box is a bezel button you can use to change the menu setting There are four types of menu boxes you can use to change settings Circular Lists Action Buttons Radio Buttons and Page Selections Circular List Menu Boxes A Circular
45. fy that your instrument is operating correctly ON OFF 1 Turn on the instrument button Wait until the display shows that all self tests passed Push the SAVE RECALL button select Setups in the top menu box and push the Recall Factory menu box PROBE COMP 2 Connect the oscilloscope probe to channel 1 To do this align the slot in the probe connector with the key on the CH 1 6 do 6 BNC push to connect and twist to the 000 right to lock the probe in place oo Attach the probe tip and reference lead to CH1 the PROBE COMP connectors 3 Push the AUTOSET button Within a few seconds you should see a square wave in the display approximately 5 V at 1 kHz peak to peak Push the CH 1 MENU button twice to turn off channel 1 push the CH 2 MENU button to turn on channel 2 repeat steps 2 and 3 For TDS 224 repeat for CH 3 and CH 4 TDS 200 Series Digital Oscilloscope User Manual 5 Getting Started Probe Compensation Perform this adjustment to match your probe to the input channel This should be done whenever you attach a probe for the first time to any input channel PROBE AUTOSET 1 Connect the oscilloscope probe to CH 1 If COMP a you use the probe hook tip ensure a proper connection by firmly inserting the tip onto the probe Attach the probe tip to the PROBE COMP 5V connector and the reference lead to the PROBE COMP Ground connector turn on the channel and then press AUTOSET 2 Check the
46. gnal and common of both channels and with the same VOLTS DIV and coupling settings on each channel Also measured on MATH Ch3 Ch4 waveform for the TDS 224 TDS 210 TDS 220 and TDS 224 gt 100 1 at 30 MHz gt 100 1 at 50 MHz Measured on one channel with test signal applied between signal and common of the other channel and with the same VOLTS DIV and coupling settings on each channel TDS 200 Series Digital Oscilloscope User Manual Appendix A Specifications Specifications Cont Vertical Digitizers VOLTS DIV Range Position Range Analog Bandwidth in Sample and Average modes at BNC or with P6112 probe DC Coupled 8 bit resolution except when set to 2 mV div each channel sampled simultaneously 2 mV div to 5 V div at input BNC 2 mV div to 200 mV div 2 V gt 200 mV div to 5 V div 50 V TDS 210 60 MHz when vertica set to gt 5 mV div 20 MHz when vertical s TDS 220 and TDS 224 100 MHz when vertical scale set to gt 5 mV div ale set to lt 5 mV div scale a Analog Bandwidth in Peak Detect mode 5 s div to 5 us div typical TDS 210 TDS 220 and TDS 224 50 MHz when vertica set to gt 10 mV div scale 75 MHz when vertical scale set to gt 10 mV div 20 MHz when vertical scale set to lt 10 mV div Selectable Analog 20 MHz Bandwidth Limit typical Lower Frequency Limit lt 10 Hz at BNC AC Coupled lt 1 Hz when using a 10
47. igger 14 83 85 vertical 89 90 cursor adjusting 34 menu 71 using 71 CURSOR button 34 71 cursors 21 application example 42 measurements 42 time 21 voltage 21 112 D description general 1 display 24 contrast 72 format 72 indicators 24 intensity 72 menu 72 persistence 72 type 72 DISPLAY button 34 72 dots 72 dual time base 32 74 E error log 87 EXT TRIG connector 35 extension module 2 101 external trigger 35 F factory setup recalling 81 features overview 1 fine resolution 89 FORCE TRIGGER button 33 format 72 functional check 5 G GPIB 2 101 TDS 200 Series Digital Oscilloscope User Manual Index graticule 20 72 gray waveforms 28 ground marker 26 probe terminal 7 terminals 35 H HARDCOPY button 34 90 holdoff 13 32 75 HOLDOFF control 13 32 horizontal aliasing 18 menu 74 position 17 position marker 25 scale 17 status 88 HORIZONTAL MENU button 31 intensity 72 invert 77 L languages 87 LEVEL control 32 level 15 main time base 32 74 manuals 102 math functions 76 menu 76 MATH MENU button 30 measure menu 79 MEASURE button 34 measurements automatic 21 79 basic concepts 20 cursor 21 42 frequency 80 graticule 20 mean 80 peak to peak 80 period 80 RMS 80 types 80 menu boxes Action Button 27 Circular List 26 Page Selection 27 Radio Button 27 menu sys
48. ing You can see the following measurements in the cursor menu m The delta voltage peak to peak voltage of the ringing m The voltage at Cursor 1 m The voltage at Cursor 2 Cursor 2 437 46 TDS 200 Series Digital Oscilloscope User Manual Application Examples Analyzing Signal Detail You have a noisy signal displayed on the oscilloscope and you need to know more about it You suspect that the signal contains much more detail than you can now see in the display Looking at a Noisy Signal The signal appears noisy and you suspect that noise is causing problems in your circuit To better analyze the noise do these steps 1 Push the ACQUIRE button to see the Acquire menu 2 Push the Peak detect button 3 If necessary push the DISPLAY button to see the Display menu Use the Contrast Increase and Contrast Decrease menu box buttons to adjust the contrast to see the noise more easily Peak detect emphasizes noise spikes and glitches in your signal especially when the time base is set to a slow setting TDS 200 Series Digital Oscilloscope User Manual 47 Application Examples 48 Separating the Signal from Noise Now you want to analyze the signal shape and ignore the noise To reduce random noise in the oscilloscope display do these steps
49. int on the display The display is 320 pixels wide by 240 pixels high Pretrigger The portion of the waveform record that contains data acquired before the trigger event Real Time Digitizing A digitizing technique that samples the input signal with a sample frequency of at least four times the oscilloscope bandwidth TDS 200 series oscilloscopes sample at 10 times the bandwidth or more Combined with sinx x interpolation all frequency components of the input up to the bandwidth are accurately displayed Record Length The number of samples in a waveform Reference Waveform A saved waveform selected for display RS 232 A serial communication port used to connect to a hard copy device computer controller or terminal Sample Acquisition Mode A mode in which the oscilloscope creates a record point by saving a sample during each acquisition interval Sample Interval The time interval between successive samples in a waveform record Changing the SEC DIV control the time base changes the sample interval For real time digitizers the sample interval is the reciprocal of the sample rate Sampling The process of capturing an analog input such as a voltage at a discrete point in time and holding it constant so that it can be quantized TDS 200 Series Digital Oscilloscope User Manual Glossary Scan Mode An acquisition mode useful at slow horizontal scale settings Scan mode allows you to view the waveform as it is ac
50. level in the specified direction Video You can use the video trigger on fields or lines of standard video signals Refer to Triggering on a Video Signal on page 53 Modes The trigger mode determines how the oscilloscope behaves in the absence of a trigger event The oscilloscope provides three trigger modes Auto Normal and Single TDS 200 Series Digital Oscilloscope User Manual 11 Basic Concepts Auto This trigger mode allows the oscilloscope to acquire a waveform even when it does not detect a trigger condition If no trigger condition occurs while the oscilloscope waits for a specific period as determined by the time base setting it will force itself to trigger Refer to Time Base on page 16 for more information on time bases When forcing invalid triggers the oscilloscope cannot synchronize the waveform and the waveform seems to roll across the display If valid triggers occur the display becomes stable on the screen You can use Auto mode to monitor an amplitude level such as a power supply output which may cause the waveform to roll across the display Normal The Normal mode allows the oscilloscope to acquire a waveform only when it is triggered If no trigger occurs the oscilloscope will not acquire a new waveform and the previous waveform if any will remain on the display Single The Single mode allows the oscilloscope to acquire one waveform each time you press the RUN button and the trigger condi
51. ll be used as a trigger source or for math displays while turned off Hard Copy 90 Push the HARDCOPY button to print a hard copy of the display The hard copy function requires that an extension module with a Centronics RS 232 or GPIB port be installed and connected to a printer Refer to the manual supplied with your extension module for instructions on connections and using the module Refer to Optional Accessories on page 101 for information about the available extension modules TDS 200 Series Digital Oscilloscope User Manual Appendix A Specifications All specifications apply to the TDS 200 Series Digital Oscilloscopes with a P6112 probe unless noted otherwise To meet specifications two conditions must first be met m The instrument must have been operating continuously for twenty minutes within the specified operating temperature m You must perform the Self Cal operation accessible through the Utility menu if the operating temperature changes by more than SG All specifications are guaranteed unless noted typical Specifications Acquisition Acquisition Modes Acquisition R ate Sample Peak Detect and Average Up to 180 waveforms per second all channels Sample acquisition mode no measurements typical Single Sequence Inputs Input Coupling Acquisition Mode Sample Peak Detect Average DC AC or GND Acquisition Stops After Single acquisition all channels simultaneousl
52. m to the left of the trigger point The oscilloscope continues to acquire data while waiting for the trigger condition to occur After it detects a trigger the oscilloscope continues to acquire enough data so that it can draw the waveform to the right of the trigger point Source You can derive your trigger from various sources Input channels AC Line and External Input The most commonly used trigger source is any one of the input channels The channel you select as a trigger source will function whether it is displayed or not TDS 200 Series Digital Oscilloscope User Manual Basic Concepts AC Line You can use this trigger source when you want to look at signals related to the power line frequency such as lighting equipment and power supply devices The oscilloscope generates the trigger so you do not have to input a trigger signal External TDS 210 and TDS 220 Only You can use this trigger source when you want to acquire data on two channels and trigger from a third For example you might want to trigger from an external clock or with a signal from another part of the test circuit For the TDS 210 and TDS 220 oscilloscopes you can connect an external trigger signal to the EXT TRIG connector Types The oscilloscope provides two types of triggers Edge and Video Edge You can use the edge trigger with analog and digital test circuits An edge trigger occurs when the trigger input passes through a specified voltage
53. ne window zone gt tem Main Window zone time base displayed displayed Holdoff Use holdoff to help stabilize the display of nonperiodic waveforms Holdoff begins when the instrument recognizes a trigger event and disables the trigger system until acquisition is complete The trigger system remains disabled during the holdoff time that follows each recognized trigger event TDS 200 Series Digital Oscilloscope User Manual 75 Reference Math 76 Although you access the Math menu in the same way the menu boxes vary depending on the oscilloscope model firmware version and installed module Push the MATH MENU button to display the waveform math operations Push the MATH MENU button again to turn off the math waveform display Refer to page 89 for vertical system descriptions The following tables list menu boxes available based on the oscilloscope model firmware version and installed module TDS 210 and TDS 220 Firmware V 2 00 and Above and TDS 224 All Versions Oscilloscopes Operation menu Comments CH1 CH2 The channel 2 waveform is sub subtraction tracted from the channel 1 waveform CH2 CH1 The channel 1 waveform is sub tracted from the channel 2 waveform CH3 CH4 The channel 4 waveform is sub tracted from the channel 3 waveform CH4 CH3 The channel 3 waveform is sub tracted from the channel 4 waveform TR CH1 CH2 ooo Channels 1 and 2 are added together
54. ntrols 89 TDS 200 Series Digital Oscilloscope User Manual 65 Reference Acquire Push the ACQUIRE button to set acquisition parameters Menus Comments Sample This is the default mode Peak Detect Use to detect glitches and reduce the possibility of aliasing Average Use to reduce random or uncorrelated noise in the signal display The number of averages is selectable Averages Select Number of Averages Key Points If you probe a noisy square wave signal that contains intermittent narrow glitches the waveform displayed will vary depending on the acquisition mode you choose EFE a PAH Sample Peak Detect Average 66 TDS 200 Series Digital Oscilloscope User Manual Reference The next two topics describe each of the types of acquisition modes and their differences Sample Use Sample acquisition mode to acquire 2 500 points and display them at the SEC DIV setting Sample mode is the default mode Sample acquisition intervals 2500 1 2 3 4 5 6 7 8 9 10 e Sample points Sample mode acquires a single sample point in each interval The maximum sample rate is 1 GS s At 100 ns and faster settings this sample rate does not acquire 2 500 points In this case a Digital Signal Processor interpolates points between the sampled points to make a full 2 500 point waveform record Peak Detect Use Peak Detect acquisition mode to detect glitches as nar
55. ob to 61 ms Adjust the horizontal SEC DIV knob until you see a whole line Push the Window Zone menu box button Adjust the SEC DIV knob to set the width of the window area to be expanded 8 Adjust the HORIZONTAL POSITION knob to position the window around the portion of the waveform you want to expand NA un A Ww N 56 TDS 200 Series Digital Oscilloscope User Manual Application Examples 9 Push the Window button to see the expanded portion of the waveform 10 Adjust the SEC DIV knob to optimize viewing the expanded waveform To switch between the Main and Window views push the Main or Window menu box button in the HORIZONTAL MENU Triggering on Odd or Even Video Fields Your oscilloscope will trigger on both odd and even video fields and make the data difficult to view because the line details are a half line apart To remedy this you can set the holdoff period to lock on just the odd or even field which produces a stable display For example the field rate for NTSC video is 60 Hz For stable triggering you should set the holdoff period to at least the field rate 16 7 ms but not to more than twice the field rate 33 ms TDS 200 Series Digital Oscilloscope User Manual 57 Application Examples 58 To trigger on only an odd or even video field do these steps 1 If channel 1 is not displaye
56. oid 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 Connect the Probe Properly The probe ground lead is at ground potential Do not connect the ground lead to an elevated voltage 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 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 Provide Proper Ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation TDS 200 Series Digital Oscilloscope User Manual vV General Safety Summary vi Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Safety Terms and Symbols Terms in This Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that
57. oscope acquires and displays a waveform that is the averaged result of several acquisitions This reduces the apparent noise The oscilloscope acquires data as in the sample mode and then averages it according to a specified number of averages TDS 200 Series Digital Oscilloscope User Manual 105 Glossary 106 Backlight The illumination behind the liquid crystal display Bezel Buttons The column of buttons beside the display that select items in the menus Centronics A serial communication port used to connect to a hard copy device computer controller or terminal Cursors Paired markers that you can use to make measurements between two waveform locations The oscilloscope displays the values expressed in volts or time of the position of each cursor and the distance between the two cursors DC Coupling A mode that passes both AC and DC signal components to the circuit Available for both the trigger system and the vertical system Digitizing The process of converting a continuous analog signal such as a waveform to a set of discrete numbers representing the amplitude of the signal at specific points in time Display The word used to refer to the screen or the LCD liquid crystal display Edge Trigger Triggering that occurs when the oscilloscope detects the source passing through a specified voltage level in a specified direction the trigger slope GPIB A serial communication port used to connect to a hard co
58. plication Examples Analyzing a Differential Communication Signal You are having intermittent problems with a serial data communica tion link and you suspect poor signal quality Set up the oscilloscope to show you a snapshot of the serial data stream so you can verify the signal levels and transition times Because this is a differential signal you use the math function of the oscilloscope to view a better representation of the waveform ngoooooooooooogoo0o0o000o00o00o000090u0000 efe a ooo ooo ooo Inooooorsconoooopsgpooooooooooooooooso CH1 CH2 Nong occ 0c 0 Soo 0S000000 0c000000000000000u0000 TiN Sct Go AGSsococeySSocoo0c0o00000000000 pff cooooooooooooooUoooooooooooooOooooUGooHo0o000 60 TDS 200 Series Digital Oscilloscope User Manual Application Examples To activate the differential signals connected to channel and channel 2 do these steps 1 If the channels are not displayed push the CH 1 MENU and then CH 2 MENU buttons 2 Push the AUTOSET button 3 Push the MATH button to see the Math menu TDS 210 and TDS 220 Firmware V 2 00 and Above and TDS 224 All Versions Oscilloscopes Do these steps 1 Push the Operation menu box button to select 2 Push the CHI CH2 menu box button to display a new waveform that is the difference of th
59. py device computer controller or terminal TDS 200 Series Digital Oscilloscope User Manual Glossary Ground GND Coupling Coupling option that disconnects the input signal from the vertical system Ground Lead The reference lead for an oscilloscope Hard Copy An electronic copy of the display in a format useable by a printer Holdoff A specified amount of time that must elapse after a trigger event before the trigger circuit will accept another trigger event Holdoff helps ensure a stable display Voltage Cursors The two horizontal bars that you position to measure the voltage parameters of a waveform The oscilloscope displays the value of each cursor with respect to ground and the voltage value between the bars Menu A set of labels shown in the display to identify the functions of the bezel buttons The specific menu contents depend on the menu button you press Normal Trigger Mode A mode where the oscilloscope does not acquire a waveform record unless a valid trigger event occurs It waits for a valid trigger event before acquiring waveform data Peak Detect Mode A mode in which the oscilloscope creates a pair of record points during each sample interval Each pair consists of the maximum and minimum input voltage during the interval Persistence A method of retaining old data on the display for a period of time TDS 200 Series Digital Oscilloscope User Manual 107 Glossary 108 Pixel A visible po
60. q Push the second CH1 menu box button to select Period IAM PR YP Push the third CH1 menu box button to select Pk Pk The frequency period and peak to peak measurements are shown in the menu and are updated periodically TDS 200 Series Digital Oscilloscope User Manual 39 Application Examples 40 Measuring Two Signals You are testing a piece of equipment and need to measure the gain of the audio amplifier You have an audio generator that can inject a test signal at the amplifier input Connect two oscilloscope channels to the amplifier input and output as shown Measure both signal levels and use the measurements to calculate the gain Oo a CH1 CH2 e o r al TDS 200 Series Digital Oscilloscope User Manual Application Examples To activate and display the signals connected to channel and to channel 2 do these steps 1 If the channels are not displayed push the CH 1 MENU and then CH 2 MENU buttons 2 Push the AUTOSET button To select measurements for the two channels do these steps 1 Select the source channels a Push the MEASURE button to see the Measure menu b Push the top menu box button to select Source c Push the second menu box button to select CH1 d Push the third menu box button to select CH2 2 Select the type of measurement displayed for ea
61. quired point by point The waveform appears from left to right across the display Time Base The period of time that corresponds to one horizontal division on the screen one tenth of the waveform record set with the SEC DIV control See also Sample Interval Time Cursors The two vertical bars you position to measure the time parameter of a waveform record The oscilloscope displays the value of each cursor with respect to trigger and the time value between the bars expressed in seconds and in the reciprocal of seconds Hertz Video Trigger Triggering on the sync pulse of a composite video signal XY Format A display format that compares the voltage level of two waveform records point by point It is useful for studying phase relationships between two waveforms YT Format The conventional oscilloscope display format It shows the voltage of a waveform record on the vertical axis as it varies over time on the horizontal axis TDS 200 Series Digital Oscilloscope User Manual 109 Glossary 110 TDS 200 Series Digital Oscilloscope User Manual Index A AC line trigger source 11 84 accessories 101 102 acquire menu 66 ACQUIRE button 34 66 acquiring data basic concepts 15 acquisition live display 69 modes 15 66 Average 16 Peak Detect 16 Sample 15 single shot 49 stopping 69 aliasing 18 applications analyzing a differential commu nication signal 60 analyzing signal detail 47 automatic measur
62. r 2 2 000ms NOTE The TDS2MM extension module provides pulse width as an automatic measurement Measuring Rise Time After measuring the pulse width you decide that you need to check the rise time of the pulse Typically you measure rise time between the 10 and 90 portion of the waveform To measure the rise time do these steps 1 Adjust the SEC DIV knob to display the rising edge of the waveform 2 Adjust the VOLTS DIV knob to set the waveform amplitude to about five divisions 3 Push the CH 1 MENU button to see the CH1 menu if it is not displayed 4 Push the Volts Div button to select Fine TDS 200 Series Digital Oscilloscope User Manual 43 Application Examples 5 Adjust the VOLTS DIV knob to set the waveform amplitude to exactly five divisions 6 Use the VERTICAL POSITION knob to center the waveform position the baseline of the waveform 2 5 divisions below the center graticule 7 Push the CURSOR button to see the Cursor menu 8 Push the top menu box button to set the type to Time 9 Use the CURSOR 1 knob to place the cursor at the point where the waveform crosses the second graticule line below center screen This is the 10 point on the waveform 10 Use the CURSOR 2 knob to place the second cursor at the point where the waveform crosses the second graticule line above center screen This is the 90 point on the waveform 11 The delta readout in the c
63. r as horizontal lines on the display and measure the vertical parameters Time Cursors Time cursors appear as vertical lines on the display and measure the horizontal parameters Automated When you take automated measurements the oscilloscope does all the calculating for you Because these measurements use the waveform record points they are more accurate than graticule or cursor measurements Automated measurements use readouts to show measurement results These readouts are updated periodically as the oscilloscope acquires new data Setting Up the Oscilloscope You should become familiar with three functions that you will use often when operating your oscilloscope Autoset saving a setup and recalling a setup Included is a description of the default settings for normal operation of the oscilloscope TDS 200 Series Digital Oscilloscope User Manual 21 Basic Concepts Using Autoset The Autoset function obtains a stable waveform display for you It automatically adjusts the vertical and horizontal scaling as well as the trigger coupling type position slope level and mode settings Saving a Setup By default the oscilloscope saves the setup each time it is powered off The oscilloscope automatically recalls this setup the next time it is powered on NOTE You should wait at least five seconds after your last change to the setup before you turn off the power This ensures that the setup is saved properly
64. re is a separate vertical menu for each channel Each item is set individually for each channel Menu Comments Coupling DC passes both AC and DC components of the input signal AC blocks the DC component of the input signal GND disconnects the input signal BW Limit 20 MHz Limits the bandwidth to reduce display noise Off Volts Div Coarse Selects the resolution of the Volts Div knob Fine Coarse defines a 1 2 5 sequence Fine changes the resolution to small steps between the coarse settings Probe 1x Set this to match your probe attenuation 10x factor to make the vertical scale readout 100x correct 1000x Invert On Not available on a TDS 210 or TDS 220 Off firmware below V 2 00 without a TDS2MM installed TDS 200 Series Digital Oscilloscope User Manual 89 Reference Key Points GND Coupling Use GND coupling to display a zero volt waveform When you use GND coupling the input BNC connector is discon nected from internal circuits Internally the channel input is connected to a zero volt reference level Fine Resolution The vertical scale readout displays the actual Volts Div setting while in the fine resolution setting Changing the setting to coarse does not change the vertical scale until the VOLTS DIV control is adjusted Waveform off To remove a waveform from the display push the MENU button for the channel to display its vertical menu Push the menu button again to turn the waveform off An input channel can sti
65. row as 10 ns and to limit the possibility of aliasing This mode is effective when at 5 us div or slower TDS 200 Series Digital Oscilloscope User Manual 67 Reference Sample acquisition intervals 1250 1 2 3 4 5 e Sample points displayed Peak Detect mode displays highest and lowest acquired voltage in each interval NOTE If you set the SEC DIV to 2 5 us div or faster the acquisition mode changes to Sample because the sample rate is fast enough that you do not need to use Peak Detect No message displays to tell you that the mode was changed from Peak Detect to Sample When there is enough waveform noise a typical peak detect display shows large black areas The TDS 200 series oscilloscopes displays this area with diagonal lines to improve display performance Typical peak detect display TDS 200 peak detect display 68 TDS 200 Series Digital Oscilloscope User Manual Reference Average Use Average acquisition mode to reduce random or uncorrelated noise in the signal you want to display Data is acquired in sample mode then a number of waveforms are averaged together Select the number of acquisitions 4 16 64 or 128 to average for the waveform Scan Mode Display When the SEC DIV control is set to 100 ms div or slower and the trigger mode set to Auto the instrument enters the scan acquisition mode In this mode the waveform display updates from left to right There is no horizontal po
66. s of an NTSC PAL or SECAM standard video signal Menu Comments Video With Video highlighted triggering occurs onan NTSC PAL or SECAM standard video signal Trigger coupling is preset to AC Polarity Normal Normal triggers on the negative edge of Inverted the sync pulse and Inverted triggers on the positive edge of the sync pulse Source CH1 Selects the input source as the trigger CH2 signal CH3 CH4 EXT EXT and EXT 5 use the signal applied to EXT 5 the EXT TRIG connector as the source Sync Field Select to trigger on fields or lines Line Only available on the TDS 224 oscilloscope Only available on the TDS 210 and TDS 220 oscilloscopes Key Points Sync Pulses When you choose Normal Polarity the trigger always occurs on negative going sync pulses If your video signal has positive going sync pulses use the Inverted Polarity selection 86 TDS 200 Series Digital Oscilloscope User Manual Reference Utility Push the UTILITY button to display the utility menus The Utility menus change with the addition of extension modules The menus explained here relate to the product with no modules installed Refer to the manual supplied with your extension module for items not discussed here Menu Comments System Displays the system menus Status Do Self Cal Performs a self calibration Error Log Displays a list of any errors logged This list is useful when contacting a Tektronix Service Center for help
67. save the current instrument settings or from which to recall the settings Save Completes the save action Recall Recalls the instrument settings stored in the location chosen in the Setup field Key Points Saving and Recalling Setups The complete setup is stored in nonvolatile memory When you recall the setup you will be in the mode from which the setup was saved When turning the instrument on all settings return to the settings that were in place when the instrument was turned off Recalling the Factory Default Setup You can recall the default Factory Setup to initialize the instrument to a known setup TDS 200 Series Digital Oscilloscope User Manual 81 Reference Waveforms Menu Comments Waveforms Highlighting Waveforms displays the menus for storing or recalling waveforms Source Choose the waveform display to store Ref Choose the reference location to store or recall a waveform Save Stores source waveform to the chosen reference location Ref x Turns the reference waveform display on or off TDS 224 only Saving and Recalling Waveforms For the TDS 210 and TDS 220 oscilloscopes you can store two reference waveforms in nonvolatile memory For the TDS 224 oscilloscope you can store four reference waveforms although you can only display two at a time You can display reference waveforms simultaneously with current waveform acquisitions Recalled waveforms are not adjustable 82 TDS 200 Series Digital
68. shape of the displayed waveform Overcompensated ETLE Undercompensated zE a S a ule Compensated correctly 3 If necessary adjust your probe Repeat as necessary 6 TDS 200 Series Digital Oscilloscope User Manual Getting Started Self Calibration The self calibration routine lets you quickly optimize the oscillo scope signal path for maximum measurement accuracy You can run the routine at anytime but you should always run the routine if the ambient temperature changes by 5 C or more To compensate the signal path disconnect any probes or cables from the input connectors Then press the UTILITY button and select Do Self Cal to confirm that you are ready to proceed Probe Safety A guard around the probe body provides a finger barrier for protection from electric shock WARNING To avoid electric shock when using the probe keep fingers behind the guard on the probe body To avoid electric shock while using the probe do not touch metallic portions of the probe head while it is connected to a voltage source Connect the probe to the instrument and connect the ground terminal to ground before you take any measurements TDS 200 Series Digital Oscilloscope User Manual 7 Getting Started Probe Attenuation Setting Probes are available with various attenuation factors which affect the vertical scale of the signal To change or check the probe attenuation setting press the VERTICAL MENU
69. sition or trigger control of waveforms during scan mode Stopping the Acquisition While acquisition is running the waveform display is live Stopping the acquisition freezes the display In either mode the waveform display can be scaled or positioned with the vertical and horizontal controls TDS 200 Series Digital Oscilloscope User Manual 69 Reference Autoset The Autoset feature automatically adjusts the controls to produce a usable display of the input signal Pushing AUTOSET adjusts or sets each of the following items listed Function Setting Acquire mode Adjusted to Sample or Peak Detect Vertical coupling DC if GND was selected Vertical VOLTS DIV Adjusted Bandwidth Full Horizontal position Centered Horizontal SEC DIV Adjusted Trigger type Edge Trigger source Lowest numbered channel displayed Trigger coupling Adjusted to DC Noise Reject or HF Reject Trigger slope Rising Trigger holdoff Minimum Trigger level Set to 50 Display format YT Trigger mode Auto 70 TDS 200 Series Digital Oscilloscope User Manual Reference Cursors Push the CURSOR button to display the measurement cursors and cursor menu Menu Comments Select and display the measurement cursors Type Voltage measures amplitude and Time measures time and frequency Choose the waveform on which to take the cursor measurement Source The readouts display this measurement Delta The
70. t the top of the screen does not display Armed or Ready then push the RUN STOP button to start the acquisition When the relay opens the oscilloscope is triggered and captures the event TDS 200 Series Digital Oscilloscope User Manual 49 Application Examples 50 Optimizing the Acquisition The initial acquisition shows the relay contact beginning to open at the trigger point This is followed by a large spike that indicates contact bounce and inductance in the circuit The inductance can cause contact arcing and premature relay failure You can adjust the vertical horizontal and trigger controls to optimize the settings before the next single shot event is captured When the next acquisition is captured with the new settings you can see more detail about the relay contact opening You can now see that the contact bounces several times as it opens TDS 200 Series Digital Oscilloscope User Manual Application Examples Measuring Propagation Delay You suspect that the memory timing in a microprocessor circuit is marginal Set up the oscilloscope to measure the propagation delay between the chip select signal and the data output of the memory device CH1 CH2 TDS 200 Series Digital Oscilloscope User Manual 51 Application E
71. tem menu boxes 26 using 26 menus acquire 66 cursor 71 display 72 horizontal 74 math 76 measure 79 save recall 81 trigger 83 utility 87 vertical 89 messages 26 TDS 200 Series Digital Oscilloscope User Manual 113 Index N normal operation recall factory setup default 22 normal trigger 84 NTSC 57 86 P PAL 54 86 peak detect 66 67 persistence 72 73 ports 2 position vertical 89 POSITION control horizontal 31 vertical 30 positioning waveforms basic concepts 16 power 3 power cords 3 102 pretrigger view 85 printing 90 PROBE COMP connector 35 probes attenuation 89 compensation 6 35 safety 7 specifications 99 R recalling factory setup default 22 setups 22 waveforms 82 resolution fine 90 roll mode 75 RS 232 2 101 hard copy 90 114 RUN STOP button 34 S sample 66 67 sample rate maximum 67 SAVE RECALL button 34 81 saving setups 22 81 waveforms 82 scaling waveforms basic concepts 16 scan mode 69 scanning waveform 69 75 84 SEC DIV control 32 75 SECAM 86 security 3 self cal 87 service 87 102 SET LEVEL TO 50 button 33 setups basic concepts 21 saving and recalling 81 signal path compensation 88 single acquisition 84 single shot application example 49 slope 14 source trigger 10 83 86 specifications 91 status system 87 sync pulse 86 T time base 26 main 32 74 window 32 74 time
72. tion mode described on page 16 This mode samples the highest and lowest values so that the oscilloscope can detect faster signals TDS 200 Series Digital Oscilloscope User Manual 19 Basic Concepts Taking Measurements 20 The oscilloscope displays graphs of voltage versus time and can help you to measure the displayed waveform There are several ways to take measurements You can use the graticule the cursors or an automated measurement Graticule This method allows you to make a quick visual estimate For example you might look at a waveform amplitude and determine that it is a little more than 100 mV You can take simple measurements by counting the major and minor graticule divisions involved and multiplying by the scale factor For example if you counted five major vertical graticule divisions between the minimum and maximum values of a waveform and knew you had a scale factor of 100 mV division then you could easily calculate your peak to peak voltage as follows 5 divisions x 100 mV division 500 mV Cursor gt Cursor gt TDS 200 Series Digital Oscilloscope User Manual Basic Concepts Cursors This method allows you to take measurements by moving the cursors which always appear in pairs and reading their numeric values from the display readouts There are two types of cursors Voltage and Time Voltage Cursors Voltage cursors appea
73. tion causes a broken line waveform Vertical Controls VERTICAL Z POSITION Z POSITION V VY C MATH CURSOR 1 MENU CURSOR 2 CH 1 CH2 ss TD DIV ae DIV QI TDS 210 and TDS 220 TDS 200 Series Digital Oscilloscope User Manual 29 Operating Basics MATH q VERTICAL A POSITION ZA POSITION ZA POSITION ZX POSITION VY VY VY CURSOR 1 CURSOR 2 co 1 Em 2 Em 3 CH Em menu menu menu menu VOLTS DIV VOLTS DIV VOLTS DIV VOLTS DIV TDS 224 CH 1 2 3 amp 4 and CURSOR 1 amp 2 POSITION Positions the waveform vertically When cursors are turned on and the cursor menu is displayed these knobs position the cursors CH 1 CH 2 CH3 amp CH 4 MENU Displays the channel input menu selections and toggles the channel display on and off VOLTS DIV CH1 CH 2 CH 3 amp CH 4 Selects calibrated scale factors MATH MENU Displays waveform math operations menu and can also be used to toggle the math waveform on and off 30 TDS 200 Series Digital Oscilloscope User Manual Operating Basics Horizontal Controls HORIZONTAL HORIZONTAL MENU sEC DIV lt Position gt gt O Ed O N HORIZONTAL MENU TDS 224 SEC DIV TDS 210 and TDS 220 POSITION Adjusts the horizontal position of all channels and math waveforms The resolution of this control varies with the time base NOTE To make a large adjustment to the horizontal position change the SEC DIV to
74. tion is detected The data that the oscilloscope acquires depends on the acquisition mode Refer to Acquisition Modes on page 15 for more information on the type of data each acquisition mode will acquire NOTE When you use the Single trigger mode with the Average acquisition mode the number of waveforms specified in the number of averages are acquired before the acquisition stops 12 TDS 200 Series Digital Oscilloscope User Manual Basic Concepts Holdoff Triggers are not recognized during holdoff time the period that follows each acquisition For some signals you need to adjust the holdoff period to produce a stable display The trigger signal can be a complex waveform with many possible trigger points on it such as a digital pulse train Even though the waveform is repetitive a simple trigger might result in a series of patterns on the screen instead of the same pattern each time Acquisition Acquisition Acquisition interval interval interval Ss m o Indicates y J N J A J trigger points X Y Holdoff Holdoff Holdoff Triggers are not recognized during holdoff time For example you could use the holdoff period to prevent triggering on any other pulse except the first one in a pulse train This way the oscilloscope would always display the first pulse To access the Holdoff control press the HORIZONTAL Menu button select Holdoff and use the HOLDOFF knob to change the amount of
75. u can adjust the Horizontal Position control to view waveform data before the trigger after the trigger or some of each When you change the horizontal position of a waveform you are actually changing the time between the trigger and the center of the display This appears to move the waveform to the right or left on the display For example if you want to find the cause of a glitch in your test circuit you might trigger on the glitch and make the pretrigger period large enough to capture data before the glitch You can then analyze the pretrigger data and perhaps find the cause of the glitch You change the horizontal scale of all the waveforms by using the SEC DIV knob For example you might want to see just one cycle of a waveform to measure the overshoot on its rising edge TDS 200 Series Digital Oscilloscope User Manual 17 Basic Concepts The oscilloscope shows the time per division in the scale readout Since all active waveforms use the same time base the oscilloscope only displays one value for all the active channels except when you use a Window Zone Aliasing Aliasing occurs when the oscilloscope does not sample the signal fast enough to construct an accurate waveform record When aliasing happens you see a waveform with a frequency lower than the actual waveform being input or a waveform that is not stable even though the oscilloscope triggered Actual high frequency t waveform Apparent low frequency
76. ual time base Video trigger capability RS 232 GPIB and Centronics communication ports easily added with optional extension modules Variable persistence display User interface available in ten user selectable languages TDS 200 Series Digital Oscilloscope User Manual Getting Started Installation Power Cord Use only power cords designed for your oscilloscope Use a power source that delivers 90 to 264 VACRpms 45 to 440 Hz Refer to page 102 for a list of available power cords Use the power cord notch to help route the cord to the rear of the instrument and avoid inadvertently disconnecting the power source Power cord notch Securing cable Security Loop Use the built in cable channels to secure both your instrument and extension module to your location TDS 200 Series Digital Oscilloscope User Manual 3 Getting Started Extension Modules You can increase the feature set of your oscilloscope by inserting an extension module Refer to page 101 for information about the available modules CAUTION Electrostatic discharge ESD can damage components in the extension module and the oscilloscope Do not operate your instrument with the extension module connector exposed Modules slide 4 in and out y Sd IA Pa Ss N 4 TDS 200 Series Digital Oscilloscope User Manual Getting Started Functional Check Perform this quick functional check to veri
77. ument or probes do not use any abrasive or chemical cleaning agents TDS 200 Series Digital Oscilloscope User Manual 103 General Care and Cleaning 104 TDS 200 Series Digital Oscilloscope User Manual EEE Glossary AC Coupling A mode that blocks the DC component of a signal but passes the dynamic AC component of the signal Useful for observing an AC signal that is normally riding on a DC signal Acquisition The process of sampling signals from input channels digitizing the samples processing the results into data points and assembling the data points into a waveform record The waveform record is stored in memory Aliasing A false representation of a signal due to insufficient sampling of high frequencies or fast transitions A condition that occurs when an oscilloscope digitizes at an effective sampling rate that is too slow to reproduce the input signal The waveform displayed on the oscilloscope may have a lower frequency than the actual input signal Attenuation The degree the amplitude of a signal is reduced when it passes through an attenuating device such as a probe or attenuator the ratio of the input measure to the output measure For example a 10X probe attenuates or reduces the input voltage of a signal by a factor of 10 Auto Trigger Mode A trigger mode that causes the oscilloscope to automatically acquire if it does not detect a trigger event Average Acquisition Mode A mode in which the oscill
78. ursor menu is the rise time of the waveform Source ren ie Delta 5 divisions 5400s 165 2kHz Cursor 1 5 200 us Cursor 2 2 200 us NOTE The TDS2MM extension module provides rise time as an automatic measurement 44 TDS 200 Series Digital Oscilloscope User Manual Application Examples Measuring Ring Frequency To measure the ring frequency at the rising edge of a signal do these steps 1 Push the CURSOR button to see the Cursor menu 2 Push the top menu box button to select Time 3 Use the CURSOR 1 knob to place a cursor on the first peak of the ring 4 Use the CURSOR 2 knob to place a cursor on the second peak of the ring You can see the delta time and frequency the measured ring frequency in the Cursor menu Delta 10 00ns 100 0hMHz Cursor 1 5 600ns Cursor 2 15 60ns TDS 200 Series Digital Oscilloscope User Manual 45 Application Examples Measuring Ring Amplitude You measured the ring frequency in the previous example Now you want to measure the amplitude of the ringing To measure the amplitude do these steps 1 Push the CURSOR button to see the Cursor menu 2 Push the top menu box button to select Voltage 3 Use the CURSOR 1 knob to place a cursor on the highest peak of the ring 4 Use the CURSOR 2 knob to place a cursor on the lowest point of the r
79. xamples To set up to measure propagation delay do these steps 1 If the channels are not displayed push the CH 1 MENU and then CH 2 MENU buttons 2 Push AUTOSET to trigger a stable display Se Adjust the horizontal and vertical controls to optimize the display Push the CURSOR button to see the Cursor menu Push the top menu box button to select Time Push the Source menu box button to select CH1 Use the CURSOR 1 knob to place the cursor on the active edge of the chip select signal 8 Use the CURSOR 2 knob to place the second cursor on the data output transition E IS ol 9 Read the propagation delay in the Delta readout in the cursor menu 52 TDS 200 Series Digital Oscilloscope User Manual Application Examples Triggering on a Video Signal You are testing the video circuit in a piece of medical equipment and need to display the video output signal The video output is an NTSC standard signal Use the video trigger to obtain a stable display 75 Q terminator TDS 200 Series Digital Oscilloscope User Manual 53 Application Examples Triggering on Video Fields To trigger on the video fields do these steps 1 p Push the TRIGGER MENU button to see the Trigger menu 2 Push the top menu box button to select Video 3 4 Adjust the horizontal SEC DIV knob to see a complete field Push the Sync menu box button to
80. xamples To view the input and output of the circuit in an x y display do these steps 1 Connect the channel 1 probe to the input of the network and connect the channel 2 probe to the output If the channels are not displayed push the CH 1 MENU and CH 2 MENU buttons Push the AUTOSET button Adjust the VOLTS DIV knobs to display approximately the same amplitude signals on each channel Push the DISPLAY button to see the Display menu Push the Format menu box button to select XY The oscilloscope displays a Lissajous pattern representing the input and output characteristics of the circuit Adjust the VOLTS DIV and VERTICAL POSITION knobs to display a desirable waveform Push the Persist menu box button to select Infinite Push the Contrast Increase or Decrease menu box buttons to adjust the contrast of the display for optimal viewing As you adjust the ambient temperature the display persistence captures the changes in the characteristics of the circuit TDS 200 Series Digital Oscilloscope User Manual 63 Application Examples 64 TDS 200 Series Digital Oscilloscope User Manual _ a SSS Reference This section describes the menus and operating details associated with each front panel menu button Reference Topic Page Acquire 66 Autoset 70 Cursor 71 Display 72 Hard copy 90 Horizontal controls 74 Math 76 Measure 19 Save R ecall 81 Trigger controls 83 Utility 87 Vertical co
81. xes Type menu boxes NOTE The optional TDS2MM measurement extension module adds the rise time fall time positive pulse width and negative pulse width measurements to the oscilloscope See the TDS 200 Series Extension Modules Instructions Manual TDS 200 Series Digital Oscilloscope User Manual 79 Reference Key Points Taking Measurements You can display up to four automated measurements at a time for a single waveform or divided among the waveforms The waveform channel must be on displayed to make a measurement Automated measurements cannot be taken on reference or math waveforms or while using XY or scan mode Measurement Type Definition Cyc RMS Calculates a true RMS measurement of one complete cycle of the waveform Mean Calculates the arithmetic mean voltage over the entire record Period Calculates the time for one cycle Pk Pk Calculates the absolute difference between the maximum and minimum peaks of the entire waveform Freq Calculates the frequency of the waveform by measuring the first cycle 80 TDS 200 Series Digital Oscilloscope User Manual Reference Save Recall Push the SAVE RECALL button to save or recall instrument setups or waveforms Setups Menu Comments Setups Highlighting Setups displays the menus for storing or recalling instrument setups Recall Sets the instrument controls to the default Factory factory settings Setup Specifies the memory location in which to
82. y N acquisitions all channels simultaneously N is selectable from 4 16 64 and 128 1 MQ 2 in parallel with 20 pF 3 pF Input Impedance DC Coupled P6112 Probe Attenua tion 10X Probe Attenuation Fac tors TDS 200 Series Digital Oscilloscope User Manual 1X 10X 100X 1000X 91 Appendix A Specifications Specifications Cont Inputs Maximum Voltage Be tween Signal and Com mon at input BNC Overvoltage Category Maximum Voltage CAT and CAT II 300 Vrms 420 V peak duty factor lt 50 pulse width lt 100 msec CAT Ill 150 Vams For steady state sinusoidal waveforms derate at 20 dB decade above 100 kHz to 13 Vp at 3 MHz and above Also refer to Overvoltage Category description on page 100 Maximum Voltage Be tween Probe Tip and ground using P6112 connected to input BNC Overvoltage Category Maximum Voltage CAT and CAT Il 300 Vrms 500 V peak duty factor lt 35 pulse width lt 100 msec CAT Ill 150 Vams Derate at 20 dB decade above 900 kHz to 13 Vams at 27 MHz and above Also refer to Overvoltage Category description on page 100 Time delay between 150 ps channels typical Channel to Channel TDS 210 TDS 220 and TDS 224 Common Mode Rejec tion typical Channel to Channel Crosstalk 92 100 1 at 60 Hz 20 1 at 30 MHz 100 1 at 60 Hz 20 1 at 50 MHz Measured on MATH Chl Ch2 waveform with test signal applied between si
83. y Points Persistence When using persistence old data retained is displayed in gray while the new data is black With Persistence set to Infinite record points accumulate until a control is changed XY Format This format only applies to channels 1 and 2 Choose XY display format to display channel 1 in the horizontal axis and channel 2 in the vertical axis The oscilloscope uses the untriggered sample acquisition mode and data displays as dots The sampling rate is 1 MS s and can not be changed NOTE The oscilloscope can capture a waveform in normal YT mode at any sampling rate You can view the same waveform in XY mode To do so stop the acquisition and change the display format to XY The controls operate as follows m The channel 1 VOLTS DIV and vertical POSITION controls set the horizontal scale and position m The channel 2 VOLTS DIV and vertical POSITION controls continue to set vertical scale and position The following functions do not work in XY display format m Ref or Math waveforms m Cursors Autoset resets display format to YT m Time base controls m Trigger controls TDS 200 Series Digital Oscilloscope User Manual 73 Reference Horizontal 74 You can use the horizontal controls to change the horizontal scale and position of waveforms The horizontal center of the screen is the time reference for waveforms Changing the horizontal scale causes the waveform to expand or contract around the

User Manual TDS 200-Series Digital Real

Contents

Download Pdf Manuals

Related Search

Related Contents