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TDS 340A, TDS 360 & TDS 380 Digital Real

1. The Option 14 Panel Option 14 instruments only The power connector accepts line voltage allows access to three communications interfaces to power the instrument See page 0 1 for a Centronics parallel port an RS 232 interface a listof power cord and connector options and a GPIB interface It also includes a VGA video compatible output port and a power connector for the optional TDS4F5P printer The fuse drawer holds the line fuse See upgrade kit page 1 3 for fuse replacement procedures You can use the Centronics RS 232 and GPIB interfaces to transmit hardcopy data see page 3 41 for hard copy procedures You can use the GPIB and RS 232 interfaces to operate and program the oscilloscope from a GP IB controller refer to the TDS 340A TDS 360 amp TDS 380 Programmer Manual for more information 2 8 TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics Using the Menu System TDS 300 Series oscilloscopes use an intuitive user interface This interface reduces front panel clutter while allowing easy access to specialized functions through the menu structure The procedure on page 2 10 illustrates how to navigate in the menu structure If you are unfamiliar with this menu system you may want to run through the procedure several times to learn how you can access functions and subfunctions Refer to Figure 2 1 as necessary TDS 340A TDS 36
2. Name Definition Period Timing measurement Time it takes for the first complete signal cycle to happen in the waveform or gated region The reciprocal of frequency Measured in seconds Frequency Timing measurement for the first cycle in the waveform or gated region The reciprocal of the period Measured in Hertz Hz where 1 Hz 1 cycle per second Positive Width Timing measurement of the first pulse in the waveform or gated region The distance time between MidR ef default 5096 amplitude points of a positive pulse Negative Width Timing measurement of the first pulse in the waveform or gated region The distance time between MidR ef default 50 amplitude points of a negative pulse f Risetime Timing measurement Time taken for the leading edge of the first pulse in the waveform or gated region to rise from a Low Ref value default 10 to a High Ref value default 9096 of its final value Fall Time Timing measurement Time taken for the falling edge of the first pulse in the waveform or gated region to fall from a High Ref value default 90 to a Low Ref value default 10 of its final value Positive Duty Cycle Timing measurement of the first cycle in the waveform or gated region The ratio of the positive pulse width to the signal period expressed as a percentage _ PositiveWidth P PositiveDutyCycle Period x 100 Negative Duty Cycle Timing measurement of the first cycle in the waveform or gated re
3. Language option Language User manual Reference Std English 070 9459 XX 070 9434 XX L1 French 070 9431 XX L3 German 070 9432 XX L4 Spanish 070 9433 XX L5 Japanese 070 9440 XX 070 9441 XX L7 Simple Chinese 070 9437 XX L8 Standard Chinese 070 9438 XX L9 Korean 070 9439 XX The following options add to the services available with the standard warranty The standard warranty appears immediately following the title page in this manual m Option M2 Tektronix provides three years of warranty plus two years remedial service m Option M3 Tektronix provides three years of warranty plus two years remedial service and four oscilloscope calibrations m Option M8 Tektronix provides four calibrations and four performance verifications one of each in the second through the fifth years of service TDS 340A TDS 360 amp TDS 380 User Manual Appendix C Options and Accessories Standard Accessories Optional Accessories The standard accessories listed in Table C 4 come with the TDS 340A TDS 360 and TDS 380 Refer to Table C 3 for manual part numbers Table C 4 Standard accessories Accessory Reference User Manual U S Power Cord Probes quantity two P 6109B 10X Passive TDS 340A Probes quantity two P6111B 10X Passive TDS 360 Probes quantity two P 6114B 10X Passive TDS 380 You can order the optional accessories listed in Table C 5 Table C 5 Optional accessories
4. Figure 3 17 The ACQUIRE button The ACQUIRE button activates the acquire menu shown in Figure 3 18 x a Acquisition Mode M Peak Detect gt 10us div nd Envelope 8 Average 16 M 5300ys Chi f Mode Stop After EEUU CMER 5 Button Ne O oloisoelo o o Figure 3 18 The acquire menu 3 25 TDS 340A TDS 360 amp TDS 380 User Manual Controlling Acquisition Select Acquisition Mode Activate Single Sequence Mode 3 26 Use the acquire menu to perform these tasks Press the main menu button Mode Use the side menu to select from these modes m Press Sample to select sample mode m Press Peak Detect to select peak detect mode Peak detect mode only operates at horizontal SCALE settings of 25 us or slower m Press Envelope to select envelope mode Use the General Purpose Knob to adjust the number of envelopes 2 4 8 16 32 64 128 256 or m Press Average to select average mode Use the General Purpose Knob to adjust the number of acquisitions to average 2 4 8 16 32 64 128 or 256 NOTE Average is the only available acquisition mode if an FFT math waveform is displayed Press the main menu button Stop After and then the side menu button Single Acquisition Sequence When in single sequence mode the oscilloscope acquires a single sequence displays it an
5. i Select Measurement Rise Time Fall Time EUN Positive Duty Cycle Ch1 Fall eer Negative Duty Cycle Bi 500mv M 2 545 Chl f 10mVv more elect i High Low z gt Remove Gating Reference measrmnt Measrmnt Off DAL OOOO O ooojio iolis Figure 3 13 The measure menu and active measurements Use the measure menu to perform the following tasks Activate a Measurement Use this procedure to activate a measurement for the selected waveform 1 Press the main menu button Select Measrmnt for 2 If necessary press the lowermost side menu button labeled more x out of 6 to page through the available measurements until the measurement you want to take appears in the side menu 3 Then press one of the top four side menu buttons to activate a particular measurement The measured values appear to the left of the side menu as shown in Figure 3 13 For definitions of the available measurements see Table 3 1 NOTE Measurements only remain active while the channel is active If you activate several measurements for a channel and then press the WAVEFORM OFF button the measurements disappear just like the waveform 3 18 TDS 340A TDS 360 amp TDS 380 User Manual Taking Measurements Table 3 1 Measurement definitions
6. Sample Signal Path Compensatio signal Path Compensation SPC corrects for DC inaccuracies caused by temperature variations and or long term drift SPC can be run any time after the oscilloscope is warmed up and should be run whenever the oscilloscope s ambient temperature has changed by more than 5 C or once a week if vertical settings of 5 mV div or less are used First display the CAL menu Second verify Pass f SPC willNoe adversely affected by input signals status for the with AC Sempanenis Disconnect or otherwise i i remove thse signals prior to running SPC adjustment Sections SPC will tale approximately 4 minutes to run Third run a signal path compensation and verify status is Pass Km S WETTEN System Path W Cal Pass O oooljo jolios Config OK 1 O M250us Ch2 f 240mV Compensate Signal Paths Timing Pass E Figure 1 3 Verifying adjustments and signal path compensation 8 Press Signal Path and then press the side menu button OK Compensate Signal Paths When compensation completes the status message updates to Pass or Fail in the main menu 9 Check that the word Pass appears under Signal Path in the main menu See Figure 1 3 If Pass does not appear the oscilloscope has failed the performance verification return it to Tektronix for servicing 1 6 TDS 340A
7. Accessory Part number Scope Camera C 9 Option 4 includes Adapter Hood 016 1154 01 Oscilloscope Cart K212 Rackmount Kit for field conversion 016 1166 00 Soft Sided Carrying Case 016 1158 01 Carrying Case 016 0792 01 Deluxe Transit Case 016 1157 00 Front Cover 200 3232 02 Accessories Pouch 016 1159 00 I O Interface Field Upgrade Kit TD3F14A Docuwave waveform capture utility software for the PC S60 DWAV Printer bubble jet 360 dpi 83 cps plain paper HC 220 Printer portable thermal 112 mm paper DPU 411 Paper for DPU 411 printer package of five rolls 006 7580 00 Programmer Manual 070 9442 XX Service Manual 070 9435 XX TDS 340A TDS 360 amp TDS 380 User Manual C 3 Appendix C Options and Accessories Accessory Probes These are other types of probes you can use with the TDS 340A TDS 360 and TDS 380 You can order the following probes separately m P6101B 1X Passive Probe m P6129B Switchable 1X 10X Passive Probe not recommended for the TDS 360 or TDS 380 m P6408 TIL Logic Probe m P5100 High Voltage Probe m P5200 High Voltage Differential Probe m AM503S DC AC Current Probe System m P6561AS SMD Small Geometry Probe Accessory Cables Table C 6 lists cables you can use with the TDS 340A TDS 360 and TDS 380 You can order them separately Table C 6 Accessory cables Cable type Part number GPIB 1 meter 3 3 feet 012 0991 01 GPIB 2 meter 6 6 feet 012 0991 0
8. 50 Q Termination Figure B 5 Hookup for sample rate check 2 Press SAVE RECALL SETUP Recall Factory Setup OK Confirm Factory Init 3 Setthe vertical SCALE to 500 mV div 4 Press SET LEVEL TO 50 use the vertical POSITION knob to center the test signal on screen 5 Setthe horizontal SCALE to 1 ms div 6 Press HORIZONTAL MENU Trigger Position Set to 10 TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Delta Time Measurement Accuracy 7 Adjust the horizontal POSITION to move the trigger T to the right and on to the screen Continue to position the trigger T to align it to the center vertical graticule line 8 Press the main menu button Time Base then press the side menu button Delayed Only 9 Setthe horizontal SCALE of the D delayed time base to 1 ms div Then use the General Purpose knob to set delay time to 10 ms 10 Set the horizontal SCALE of the D delayed time base to 500 ns div NOTE When you change the SEC DIV in step 10 the delay time readout changes to 10 00001 or 9 99999 This is normal and has no effect on the verification 11 Check that the rising edge of the marker crosses the center horizontal graticule line at a point within 2 0 divisions of the graticule center NOTE One division of displacement from the center graticule corresponds to a 50 ppm time base error 12 Disconnect the test hookup Delta time measurement ac
9. eeeeeeeeeee ehh nnn 2 10 Figure 2 2 A pop up menu eeeeee rr Hh hm hn nn 2 11 Figure 2 3 Connecting a probe eeeeeeeeeenn 2 12 Figure 2 4 Probe compensation setup eere 2 13 Figure 2 5 Compensation waveform eese 2 13 Figure 2 6 How probe compensation affects signals 2 14 Figure 2 7 Location of probe compensation adjustment 2 14 Figure 2 8 The AUTOSET button eene 2 15 Figure 3 1 The VERTICAL MENU button eee 3 3 Figure 3 2 The vertical menu eee 3 4 Figure 3 3 Inverting a waveform eee 3 5 Figure 3 4 The HORIZONTAL MENU button 3 6 Figure 3 5 The horizontal menu eee eene 3 6 Figure 3 6 The MATH button cece cece ce eee ee eeee 3 8 Figure 3 7 A math waveform ccccccceccceccscceces 3 9 Figure 3 8 The TRIGGER MENU button ee 3 11 Figure 3 9 The edge trigger menu eere 3 12 Figure 3 10 The video trigger menu eeeeees 3 14 Figure 3 11 The video scan rate menu eeeeeees 3 15 Figure 3 12 The MEASURE button eene 3 17 Figure 3 13 The measure menu and active measurements 3 18 Figure 3 14 The CURSOR button eene 3 22 Figure 3 15 The cursor menu eere een 3 22 Figure 3 16 Paired cursor measurem
10. 0 0 eee eee cee eee nee 3 17 Taking Measurements with Cursors 0000 cece cee een eee 3 21 Controlling Acquisition 0 ccc ccc cece eee e ee nenne 3 25 Controlling the Display 0 cece cece cece eee e ee eeee 3 27 Using the EFT 4 54 eL er ere tn 3 31 Description qas drei tas p en een quen 3 31 Operation c eer rU op ce e dro ai ee Nera edd ens 3 32 Considerations for Using FFTs 0 0 cee cece eee eens 3 36 Making Hard Copies Option 14 Equipped Instruments Only 3 41 Configuring Hard Copy Output 0 0000s 3 41 Saving a Hard Copy to Disk 0 cece eee 3 43 TDS 340A TDS 360 amp TDS 380 User Manual i Table of Contents Appendices Glossary Index Saving and Recalling Waveforms eee 3 45 Using Reference Waveforms 0 0 cece eee nennen 3 45 Using the Disk oe Rue ae NC as 3 47 Viewing a Waveform on a Spreadsheet 0 00 00 0 eee eee eee 3 49 Saving and Recalling Front Panel Setups 3 51 Using Internal Memory ssseseeeeee III 3 52 Using the Disk ehe er D EROS 3 52 Using the File System eee ehh ne 3 55 Using the Utility Menu eeeeeee ehh nen 3 59 Setting the Date and Time sasen neces 0 0 2 cee eee 3 60 Appendix A Specifications eeeeeeeeeeeeennn A 1 Warranted Characteristics 2 2 0 cece eee teen eee A 1 Typical Characteristic
11. 3 42 Position vertical 3 37 TDS 340A TDS 360 amp TDS 380 User Manual POSITION knob horizontal 2 3 vertical 2 2 Positive duty cycle measurement 3 19 Positive overshoot measurement 3 19 Positive width measurement 3 19 Power connector 1 2 2 8 controls 2 1 cord 1 2 clamp 1 2 option C 1 removal 1 3 1 4 distribution system nominal specifications A 9 on 1 2 1 4 requirements warranted A 3 Pretrigger Glossary 3 PROBE COMP output 2 12 Probe compensation output 2 2 typical specifications A 6 waveform 2 13 Probes 2 12 C 3 accessory C 4 compensating 2 12 connecting 2 12 current C 4 high voltage CA logic C 4 specifications 2 12 Product description 1 1 Programmer manual xi 2 8 3 59 C 1 Programming via GPIB 2 8 via RS 232 2 8 R Rackmount kit C 3 Readout cursor H Bars 3 34 Paired cursors 3 35 V Bars 3 34 Readouts 1 1 cursor 2 6 general purpose knob 2 6 horizontal scale 2 6 status 2 6 trigger 2 6 trigger position horizontal 2 6 vertical scale 2 6 READY indicator 2 4 Index 5 Index Rear panel 2 8 label 1 2 power connector 1 2 2 8 Recalling front panel setups 3 51 the factory setup 3 52 waveforms 3 47 Record length 1 1 Glossary 3 REF 1 2 2 button 3 45 REF 2 2 2 button 3 45 Reference xi levels 321 memory Glossary 3 section 3 1 waveform menu 3 3 3 46 waveforms 3 45 horizontal lock 3 46 remo
12. MENU CC O Trigger menu SET LEVEL 1 TO 50 O TRIGD FORCE TRIGGER Figure 3 8 The TRIGGER MENU button This button calls up one of two menus the edge trigger menu or the video trigger menu Press the leftmost main menu button to switch between the two trigger menus The edge trigger triggers on the rising or falling edge of the input signal You can access edge trigger settings through the edge trigger menu shown in Figure 3 9 Be sure the leftmost main menu selection indicates Type Edge TDS 340A TDS 360 amp TDS 380 User Manual 3 11 Triggering Select the Trigger Source Select Trigger Coupling Tek Run 1MS s Sample Edge Source Ext 10 M 50gs Cht 160mV AC AC Line Coupling Slope Level Mode Holdoff tie DC tf 160mV Normal 500ns Oo o9ooljloeio is Figure 3 9 The edge trigger menu Use the edge trigger menu to perform these tasks Press the main menu button Source Use the side menu to select from these options m Press Chl or Ch to set the trigger source to one of the input channels m Press Ext or Ext 10 to set the trigger source to the EXT TRIG input on the front panel Ext 10 attenuates the external input signal by a factor of ten Note that while the instrument can trigger on external trigger signals it cannot display them W Press AC to set the trigger source to the oscilloscope line voltage
13. TDS 360 amp TDS 380 User Manual Getting Started Functional Test The purpose of this procedure is to confirm that the oscilloscope functions properly NOTE This procedure verifies functions that is it verifies that oscilloscope features operate It does not verify that they operate within limits Therefore when the instructions that follow call for you to verify that a signal appears on screen that is about five divisions in amplitude or has a period of about six horizontal divisions do NOT interpret the quantities given as limits Operation within limits is checked in the performance tests which begin on page 0 5 DO NOT make changes to the front panel settings that are not called out in the procedure If you make changes to these settings other than those called out in the procedure you may obtain invalid results In this case just redo the procedure from step 1 Equipment Required One P6109B TDS 340A P6111B TDS 360 or P6114B TDS 380 probe Time Required Approximately 5 minutes Prerequisites None Procedure 1 Install the probe on CH 1 Connect the probe tip to PROBE COMP on the front panel leave the probe ground unconnected See Figure 1 4 OQooooocooof S Figure 1 4 Hookup for functional test TDS 340A TDS 360 amp TDS 380 User Manual 1 7 Getting Started 10 11 12 13 14 15 16 17 1 8 Press the front panel button SAVE RECALL the main
14. ni Table of Contents Getting Started Operating Basics Reference General Safety Summary eeeeeeeee enhn nnn vii Preface an tele xi StartUp a OUR COUR AD Lahn en 1 2 Line Fuse Replacemeht 512 ka e Reate et OUR RES uh ewe RR Rie 1 3 SellR TEST Yun Renee tfo ae ee are 1 5 F netion l Test 4E RR BA 1 7 Display and Power Controls 22 22222 cece cece tenes 2 1 Vertical Controls 44 ute o uot ee e e ned tue EHRE I rre 2 2 Horizontal Controls RER RR E SA 2 3 Trigger Controls 5 ES END EE ee E EC e viera I REOS 2 4 Miscellaneous Controls sseeeeeeeeeeee ee 2 5 Display Map x54 e RARUS XU pe une S Pe ee 2 6 Inputs uc oet ae nt ees tut lees A dal ue dac ANS c 2 7 Rear Panel Connectors 2 222220 esse cece eects 2 8 Using the Menu System 0 eect eh 2 9 Using the Pr bess uet VETERE EDU eS E IE E ERE VIS 2 12 Using AUtoset s e ee RR MERE OCURRE SPUR CE era EM 2 15 Introduction u 0 a e mer ern e e RR ER RETE 3 1 Manipulating Waveforms cece cece cece cere eeeeee 3 3 Vertical Operations a E e a eect teen n 3 3 Horizontal Operations 0 eect n 3 6 Displaying Math Waveforms 0c e eee eh 3 8 Trigsering ur sive ok Oa ois ire Foie sen 3 11 Edge Triggering ele nn Reeve RR ERR e e eda 3 11 Video Triggering ios re ns Re er eed 3 14 Taking Measurements 0 cece cece cece c cece ehh hn 3 17 Automated Measurements
15. press the side menu button Print The Print To side menu should appear Select the port to print to from GPIB RS 232 or Centronics See Figure 3 36 Then the oscilloscope sends the file in its raw form out the port The device printer receiving the file must be capable or printing the particular file format Creating a Directory To create a new directory press the side menu button Create Directory The labelling menu appears Turn the general purpose knob or use the main menu arrow keys to select each letter Press Enter Char from the main menu to enter each letter When you have entered the name press the side menu button OK Accept See Figure 3 36 TDS 340A TDS 360 amp TDS 380 User Manual 3 57 Using the File System Setting Confirm Delete 3 58 Setting Override Lock Formatting a Disk For More Information To turn on or off the confirm delete message toggle the side menu button Confirm Delete When the confirm delete option is OFF the oscilloscope can immediately delete files or directories When the confirm option is ON the oscilloscope warns you before it deletes files and gives you a chance to reconsider To turn on or off the file overwrite lock toggle the side menu button Overwrite Lock When overwrite lock is on the oscilloscope will not permit you to write over an existing file of the same name An important reason to allow overwriting is to let you write files using a target file name that con
16. 1 MO load Frequency 1 kHz TDS 340A TDS 360 amp TDS 380 User Manual Appendix A Specifications Table A 9 Typical characteristics data handling Name Description Time Data Retention Nonvolatile 25 Years Memoryt 1 Thetime that reference waveforms stored setups and calibration constants are retained when there is no power to the oscilloscope Datais maintained by a lithium poly carbon monofluoride battery Nominal Traits Nominal traits are described using simple statements of fact such as Two identical for the trait Input Channels Number of rather than in terms of limits that are performance requirements Table A 10 Nominal traits signal acquisition system Name Description Bandwidth S elections 20 MHz and FULL Digitizers Number of Two identical digitized simultaneously Digitized Bits Number of 8 bits Input Channels Number of Two identical called CH 1 and CH 2 Input Coupling DC AC or GND Ranges Offset All Channels Range Position Range Sensitivity Rise Time 5 divisions 2 mV div to 10 V div TDS 340A 3 5 ns TDS 360 1 75 ns TDS 380 875 ps TekP robe Interface Level one probe coding 1 Displayed vertically with 25 digitization levels DLs per division and 10 24 divisions dynamic range with zoom off A DL is the smallest voltage level change that the 8 bit A D Converter can resolve with the input scaled to the volts division setting of the channel u
17. 13 14 Set the generator frequency to 100 MHz TDS 340A 200 MHz TDS 360 or 400 MHz TDS 380 Press MEASURE High Low Setup Min Max Press the main menu button Select Measurement Press the side menu button more until Amplitude appears in the side menu Press the side menu button Amplitude Press SET LEVEL TO 50 Set the test signal amplitude for about one division on screen Fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 500 mV Readout may fluctuate around 500 mV Press TRIGGER MENU Slope TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification 15 Press SET LEVEL TO 50 Check that a stable trigger is obtained for the test waveform on both the positive and negative slopes see Figure B 7 Use the side menu to switch between trigger slopes use the trigger LEVEL knob to stabilize the trigger if required Tek Run 300MS s Edge Slope First seta signal with an amplitude atthe minimum trigger sensitivity Second check for a stable EL trigger at both the positive and negative slope settings 500mVv M i ns Chl Tomy Source Coupling slope Level Mode Holdoff chi DC X 10mv Normal 500ns Kos feno Fd d emo mod mn Figure B 7 Measuring trigger sensitivity 16 17 18 19 20 21 22 23 24 Press WAVEFOR
18. 3 1 NOTE The VERTICAL MENU button calls up the vertical menu only if a channel waveform CH 1 or CH 2 is selected If a math or reference waveform is selected the VERTICAL MENU button calls up the math or reference waveform menu O CH 1 O CH2 CD W VERTICAL ZA POSITION O MATH wv O REF 1 VERTICAL C 2 Vertical menu OREF2 R Su Ge D WAVEFORM OFF S PROBE COMP C 3 6V IL 7 Figure 3 1 The VERTICAL MENU button TDS 340A TDS 360 amp TDS 380 User Manual 3 3 Manipulating Waveforms Figure 3 2 shows the vertical menu chi Coupling M 250ns Chl X 40mVv COICO CO COICS Coupling Invert Bandwidth Fine Scale Position Offset DC off Full 20mV 20mdiv 0v olo mp Doelo o is Figure 3 2 The vertical menu Use the vertical menu to perform these tasks Select Input Coupling Press the main menu button Coupling Use the side menu to select DC AC or ground GND coupling Invert a Waveform Press the main menu button Invert Use the side menu to turn invert off and on When you turn invert on the selected waveform flips reverses polarity around the zero volt axis Figure 3 3 shows an inverted pulse signal NOTE Invert flips the waveform but it does not alter the trigger level accord ingly To obtain a stable trigger after inverting a waveform press SET LEVEL TO 50 34 TDS 340A TDS
19. 3 28 Fuse 1 2 drawer 2 8 removal and replacement 1 3 1 4 specifications 1 2 G Gated measurements Glossary 2 Gating 3 20 General Purpose Knob 2 5 2 11 3 5 3 7 3 13 3 20 3 21 3 23 3 26 3 28 icon 2 6 readout 2 6 TDS 340A TDS 360 amp TDS 380 User Manual GPIB interface 3 42 Glossary 2 cables C 4 port 2 8 talk only 3 43 Graphical user interface 1 1 2 9 Graticule full or frame 3 28 Graticule intensity 3 28 Ground coupling 3 4 Glossary 3 H H Bars 3 22 Hanning window 3 38 Hard copy 3 41 Glossary 3 abort 3 41 configuring output 3 41 format 3 42 layout 3 42 output ports 2 8 port 3 42 saving to disk 3 43 HARDCOPY button 2 5 3 41 HF reject trigger coupling 3 12 High frequency reject 3 12 High measurement 3 19 High Ref 3 19 3 21 High voltage probe C 4 High low setup 3 21 Histogram 3 21 Holdoff Glossary 3 adjustment 3 13 autoset default 2 16 range 3 13 Horizontal bar cursors Glossary 3 HORIZONTAL MENU button 2 3 3 6 Horizontal position lock reference waveforms 3 46 Horizontal system 3 6 controls 2 3 menu 3 6 menu button 2 3 position autoset default 2 15 POSITION knob 2 3 scale autoset default 2 15 scale control 2 3 scale readout 2 6 Index 3 Index I O interface field upgrade kit C 3 Input channels 1 1 Input coupling 3 4 Inputs CH 1 and CH 2 2 7 EXT TRIG 2 7 Installation 1 2 Instruction manual
20. 380 User Manual Appendix B Performance Verification Performance Test Overview Prerequisites The procedures are in three groupings Signal Acquisition System Checks Time Base System Checks and Triggering System Checks They check all the characteristics that appear in boldface type under Warranted Characteristics on page A 1 The tests in this subsection comprise an extensive valid confirmation of performance and functionality when the following requirements are met m The cabinet must be installed m You must have performed and passed the procedures under Self Tests on page 1 5 and those under Functional Tests on page 1 7 m The digitizing oscilloscope must have been operating for a warm up period of at least 20 minutes and must be operating at an ambient temperature between 10 C and 455 C Signal Acquisition System Checks Check DC Voltage Measurement Accuracy A These procedures check signal acquisition system characteristics that are listed as checked under Warranted Characteristics in the Specifications section WARNING Performance of this procedure requires input voltages up to 98 VDC Contact with live circuits could cause injury or death Be sure to set the DC calibration generator to 0 volts before connecting disconnecting and or moving the test hookup during the performance of this procedure Equipment Required One dual banana connector Item 3 one DC calibration generator Item 6 and o
21. 7 Channel ground indicator 2 6 CLEAR MENU button 2 1 Clipping FFT math waveforms 3 37 Compensating a probe 2 12 Compensation output 2 2 Config menu 3 59 Connecting a probe 2 12 Connector chassis ground 2 2 Contrast 3 28 Controls display 2 1 horizontal system 2 3 power 2 1 trigger 2 4 vertical system 2 2 Conventions performance verification B 1 B 16 Cooling space 1 2 Index 1 Index Coupling AC 3 4 Glossary 1 DC 3 4 ground 3 4 Glossary 3 input 3 4 trigger 3 12 AC 3 12 DC 3 12 HF reject 3 12 LF reject 3 13 noise reject 3 13 Current probe C 4 CURSOR button 2 5 3 21 Cursor menu 3 34 Cursor readout H Bars 3 34 Paired cursors 3 35 V Bars 3 34 Cursors 1 1 3 21 Glossary 2 menu 3 22 paired 3 22 readouts 2 6 vertical bar indicators 2 6 with FFT waveforms 3 34 Cycle mean measurement 3 20 Cycle RMS measurement 3 20 D Data handling typical specifications A 7 Date Time stamp displaying 3 29 setting 3 60 DC coupling Glossary 2 input 3 4 trigger 3 12 DC offset 3 37 for DC correction of FFTs 3 37 with math waveforms 3 37 Deluxe transit case C 3 Diag menu 3 59 Digitizing Glossary 2 Dimensional drawing A 11 Disk drive 3 55 3 58 See also File system Index 2 Display contrast 3 28 controls 2 1 3 27 dot accumulate 3 28 dots 3 28 format 3 28 autoset default 2 15 intensity 3 28 autoset default 2 15 text and graticule 3 28 wav
22. A 5 Table A 7 Typical characteristics triggering system A 6 Table A 8 Typical characteristics probe compensator output A 6 Table A 9 Typical characteristics data handling A 7 Table A 10 Nominal traits signal acquisition system A 7 Table A 11 Nominal traits time base system A 8 Table A 12 Nominal traits triggering system A 8 Table A 13 Nominal traits display system A 9 Table A 14 Nominal traits I O interface option A 9 Table A 15 Nominal traits power distribution system A 9 Table A 16 Nominal traits mechanical characteristics A 10 Table A 17 Certifications and compliances A 12 Table B 1 Test equipment eee nnn nn B 3 Table B 2 DC accuracy ccc cece cece cece rh nnn B 7 Table C 1 VGA output connector pins eee C 1 Table C 2 International power cords eee C 1 Table C 3 Language options eeeeeeeeennnnn C 2 Table C 4 Standard accessories eee C 3 Table C 5 Optional accessories eene C 3 Table C 6 Accessory cables cc ccc cee cece eee enn nn C 4 TDS 340A TDS 360 amp TDS 380 User Manual V Table of Contents vi TDS 340A TDS 360 amp TDS 380 User Manual fcc if General Safety Su
23. Measrmnt CO Gating Off CO OO OO D Figure B 4 Measuring analog bandwidth 14 When finished checking set the horizontal SCALE back to the 10 us div setting and set the generator output frequency back to 50 kHz 15 Press WAVEFORM OFF to remove Channel 1 from the display 16 Press CH 2 and move the hookup to the CH 2 input 17 Press TRIGGER MENU Source CH 2 18 Repeat steps 6 through 13 for CH 2 TDS 340A TDS 360 amp TDS 380 User Manual B 9 Appendix B Performance Verification 19 Disconnect the test hook up from the CH 2 input connector Time Base System Checks Check Long Term Sample Rate and Delay Time Accuracy B 10 This procedure checks those characteristics that relate to the Main and Delayed time base system and are listed as checked under Warranted Characteristics in the Specifications section Equipment Required One time marker generator Item 9 one precision coaxial cable Item 2 and one 50 Q termination Item 1 Time Required Approximately 5 minutes Prerequisites See page B 5 Procedure 1 Connect through a 50 Q precision coaxial cable and a 50 Q termination the time mark output of a time marker generator to CH 1 as shown in Figure B 5 Set the output of the generator for 10 ms markers Time Mark Generator 7000000 0 D SS SS cC UO 6 0
24. activate a particular measurement Press the main menu button Gating Press the side menu button Gate with V Bar Cursors Use the General Purpose Knob to set one cursor to the left edge of your gate Press SELECT geo is come IR Use the General Purpose Knob to set the other cursor to the right edge of the gate All automated measurements now take data only from the portion of the waveform that is within the gate 9 Press Gate Off to turn gating off TDS 340A TDS 360 amp TDS 380 User Manual Taking Measurements NOTE Gate Off deactivates the gating function but it does not deactivate the vertical cursors Deactivate the cursors from the cursor menu as described in the next section Switch High Low Setup Press the main menu button High Low Setup to change the way the measure ment system determines the high and low levels of waveforms Use the side menu to select from these options m Press Histogram to set the levels statistically The oscilloscope attempts to find the highest density of points above and below the midpoint ignoring spikes This method works well for measuring square waves and pulse waveforms W Press Min Max to set the levels to the lowest amplitude most negative and highest amplitude most positive samples Set Reference Levels Press the main menu button Reference Levels to set the high middle and low reference levels The oscilloscope uses these levels for rise time fall time width an
25. and fastest time base setting of 1 ns div TDS 380 200 MHz analog bandwidth and fastest time base setting of 2 5 ns div TDS 360 100 MHz analog bandwidth and fastest time base setting of 5 ns div TDS 340A m A full complement of advanced functions including on screen readout AUTOSET cursors continuously updated automatic measurements and FFT m Waveform averaging waveform enveloping and hardware peak detection m Floppy disk drive for mass storage of waveforms setups and hard copies m A unique graphical user interface GUI and a logical front panel layout which combine to deliver the standard in usability pioneered by the TDS family of oscilloscopes TDS 340A TDS 360 amp TDS 380 User Manual 1 1 Getting Started Start Up To properly install and power on the oscilloscope perform this procedure 1 Check that you have the proper electrical connections The rear label lists power requirements for all possible voltage inputs Check the fuse to be sure it is the proper type and rating Figure 1 2 TDS 300 Series oscilloscopes are shipped with a UL approved fuse installed Fuse specifications are as follows 5 mm x 20 mm time lag 3 15 A 250 V or 1 25 in x 0 25 in time lag 3 A 250 V Connect the proper power cord from the rear panel power connector Figure 1 2 to the power system Use the power cord clamp to secure the cord to the rear panel Leave space for cooling Do this by verifying that th
26. displays an actively acquiring waveform on screen with the noise displayed Press the side menu button Average Check that the oscilloscope displays an actively acquiring waveform on screen with the noise reduced TDS 340A TDS 360 amp TDS 380 User Manual Getting Started 18 Press WAVEFORM OFF to remove Channel 1 from the display 19 Press CH 2 and move the probe to the CH 2 input 20 Repeat steps 3 through 17 for Channel 2 21 Disconnect the probe from the channel input and the PROBE COMP terminal TDS 340A TDS 360 amp TDS 380 User Manual 1 9 Getting Started 1 10 TDS 340A TDS 360 amp TDS 380 User Manual SD Operating Basics Br n Operating Basics This chapter begins with eight illustrations that identify and describe each control and connector on the TDS 300 Series oscilloscope Next Operating Basics covers these additional topics m Using the menu system m Using probes m Using autoset Display and Power Controls Tektronix TDS 360 25e soos a The Side Menu buttons provide access to side menu selections See page 2 9 for more information about the user interface m d Fen E an DE e m a e CO The CLEAR MENU button clears all menus from the screen CLEAR MENU I NZ The ON STBY button toggles The Main Menu buttons provide access to instrument power main menu selec
27. div 0 4 x Net Offset 300 mV 0 1 div x V div setting TDS 340A DC 2100 MHz TDS 360 DC 2200 MHz DC 2180 MHz for 2 mV div TDS 380 DC 2400 MHz DC 2250 MHz for 2 mV div Cross Talk Channel Isolation 2100 1 at50 MHz with equal Volts Div settings on each channel Input Impedance DC Coupled TDS 340A 1 MQ 1 in parallel with 20 pF 2 0 pF TDS 360 1 MQ 1 in parallel with 20 pF 2 0 pF TDS 380 1 MQ 1 in parallel with 12 pF 2 0 pF Input Voltage Maximum 300 V DC or AC CAT Il derate at 20 dB decade above 100 kHz to 13 V peak AC at 3 MHz and above Lower Frequency Limit AC Coupled lt 10 Hz 1 Net Offset Offset Position x Volts Div Net offset is the voltage level at the center of the A D converter dynamic range Offset Accuracy is the accuracy of this voltage level The AC Coupled Lower Frequency Limits are reduced by a factor of 10 when 10X passive probes are used Table A 2 Warranted characteristics time base system Name Accuracy Long Term Sample Rate and Delay Time Accuracy Delta Time Measurements 2 Description 100 ppm over any 21 ms interval For single shot acquisitions using sample acquisition mode and a bandwidth limit setting of FULL 1 WI 100 ppm x Reading 0 6 ns For repetitive acquisitions using average acquisition mode with 216 averages and a bandwidth limit setting of FULL 1 WI 100 ppm x Reading 0 4 ns 1 For input sign
28. interfaces VGA video output and power for the DPU 411 printer It also includes the TDS 340A TDS 360 amp TDS 380 Programmer Manual You can connect a remote display to the VGA 9 pin D connector on the rear panel Table C 6 on page C 4 gives the part number of a properly shielded cable that is commercially available Because display manufacturers use different pin combinations and connectors you may find the information in Table C 1 helpful Table C 1 VGA output connector pins Pin Signal 2 Video monochrome analog 4 Horizontal sync Q 31 5 kHz VGA rate 5 Vertical sync 6 7 8 Ground Options A1 A5 Besides the standard North American 110 V 60 Hz power cord Tektronix ships International Power Cords any of five alternate power cord configurations with the oscilloscope when ordered by the customer see Table C 2 Table C 2 International power cords Option Power Cord Al Universal European 220 V 50 Hz A2 UK 240 V 50 Hz A3 Australian 240 V 50 Hz TDS 340A TDS 360 amp TDS 380 User Manual C 1 Appendix C Options and Accessories Language Options Warranty Plus Service Options C 2 Table C 2 International power cords Cont Option Power Cord A4 North American 240 V 60 Hz A5 Switzerland 220 V 50 Hz Language options provide user documentation in following local languages see Table C 3 for options and manual part numbers Table C 3 Language options
29. located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES rm M
30. of a signal Using both channel waveforms the oscilloscope can add or multiply them or subtract one from the other and display the result as a math waveform To activate the math waveform press the MATH button shown in Figure 3 6 OCH1 OCH2 VERTICAL Z POSITION O MATH v Math C D O REF 1 VERTICAL OREF2 A fy J WAVEFORM OFF PROBE COMP 25V IL Figure 3 6 The MATH button To choose one of the arithmetic math functions select a formula from the side menu Chl Ch2 Chl Ch2 Ch2 Chl or CHI Ch2 Figure 3 7 shows a square wave on Channel 2 added to a sine wave on Channel 1 For more information about the FFT math function refer to the section Using the FFT on page 3 31 TDS 340A TDS 360 amp TDS 380 User Manual Manipulating Waveforms Tek Single Seq 100kS s Math 4 chi Ch2 Chi Ch2 ch2 chi chi x ch2 OS Chi 2v Ch 2V M500gs Chi 2v 50045 Ojoloioioe o o Figure 3 7 A math waveform TDS 340A TDS 360 amp TDS 380 User Manual 3 9 Manipulating Waveforms 3 10 TDS 340A TDS 360 amp TDS 380 User Manual Triggering Edge Triggering TDS 300 Series oscilloscopes have two triggers a standard edge trigger and a video trigger To access trigger settings and features press the TRIGGER MENU button shown in Figure 3 8 HE TRIGGER lili LEVEL TRIGGER
31. one half times the DC coupled limits 4 High Frequency Reject One and one half times times the DC coupled limits4 from DC to 30 kHz Attenuates signals above 30 kHz Low Frequency Reject One and one half times the DC coupled limits4 for frequencies above 80 kHz Attenuates signals below 80 kHz 1 The trigger position errors are typically less than the values given here These values are for triggering signals having a slew rate at the trigger point of 0 5 division ns The waveform interval WI is the time between the samples in the waveform record Also see the footnote for the characteristics Sample Rate Range and Equivalent Time or Interpolated Waveform Rates in Table A 11 on page A 8 3 The minimum sensitivity for obtaining a stable trigger A stable trigger results in a uniform regular display triggered on the selected slope The trigger point must not switch between opposite slopes on the waveform and the display must not roll across the screen on successive acquisitions The TRIG D LED stays constantly lighted when the SEC DIV setting is 2 ms or faster but may flash when the SEC DIV setting is 10 ms or slower Seethe characteristic Sensitivity Edge Type Trigger DC Coupled in Table A 3 which begins on page A 3 Table A 8 Typical characteristics probe compensator output Name Output Voltage and Frequency Probe Compensator A 6 Description Characteristic Voltage 5 0 V low high into a
32. signal Press the main menu button Coupling Use the side menu to select from these options m Press DC to select DC coupling W Press AC to select AC coupling m Press HF Reject to select high frequency reject mode High frequency rejection removes the high frequency portion of the triggering signal This TDS 340A TDS 360 amp TDS 380 User Manual Triggering allows only the low frequency components to pass on to the triggering system High frequency reject mode attenuates signals above 30 kHz m Press LF Reject to select low frequency reject mode Low frequency rejection is the opposite of high frequency rejection Low frequency reject mode attenuates signals below 80 kHz m Press Noise Reject to select noise reject mode Noise rejection provides DC low sensitivity but it requires additional signal amplitude for stable triggering Change Trigger Slope Press the main menu button Slope Use the top two side menu buttons to switch between positive going and negative going slope Adjust Trigger Level Press the main menu button Level Use the side menu to select from these options m Use the General Purpose Knob to adjust trigger level Note that this selection performs the same function as the trigger LEVEL knob on the front panel m Press Setto TTL to automatically set the trigger level to the TTL switching threshold m Press Set to ECL to automatically set the trigger level to the ECL switching threshold m Pr
33. the trigger source Trigger Slope Positive DC Trigger Coupling 2 15 Operating Basics Table 2 1 Autoset defaults Cont Control Changed by autoset to Trigger Holdoff 500 ns Vertical Scale As determined by the signal level Vertical Coupling Vertical Bandwidth Vertical Offset DC unless AC was previously set AC remains unchanged Full 0 volts TDS 340A TDS 360 amp TDS 380 User Manual E 0 Reference Introduction This chapter describes common tasks where you can use the TDS 300 oscillo scope The tasks listed below are in a functional order starting with the most basic and then moving to the more specialized Manipulating Waveforms Triggering Taking Measurements Controlling Acquisition Controlling the Display Using the FFT Making Hard Copies Saving and Recalling Waveforms Saving and Recalling Setups Using the File System Using the Utility Menu TDS 340A TDS 360 amp TDS 380 User Manual 3 1 Introduction 3 2 TDS 340A TDS 360 amp TDS 380 User Manual E Manipulating Waveforms Vertical Operations There are two basic ways to manipulate waveforms acquired by TDS 300 Series oscilloscopes m You can change their display parameters with the vertical and horizontal systems W Youcan add subtract and multiply them with the waveform math feature To access the vertical system features press the VERTICAL MENU button shown in Figure
34. waveform Reference Memory Memory in an oscilloscope used to store waveforms or settings You can use that waveform data later for processing The oscilloscope saves the data even if you turn it off or unplug it TDS 340A TDS 360 amp TDS 380 User Manual Glossary 3 Glossary Glossary 4 Roll An acquisition mode useful at slow horizontal scale settings Roll mode allows you to view the waveform as it is acquired point by point The waveform appears to roll across the display Sample Acquisition Mode The oscilloscope creates a record point by saving the first sample during each acquisition interval This is the default mode of the acquisition system Sample Interval The time interval between successive samples in a time base 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 Selected Waveform The waveform on which all measurements are performed and which is affected by vertical position and scale adjustments Side Menu Menu that appears to the right of the display These selections expand on main menu selections Side Menu Buttons Bezel buttons to the right of the side menu display They allow you to select items in the side menu Signal Path Compensation SPC The ability of the oscilloscope to minimize the electrical offsets in the ver
35. xi Intensity 3 28 autoset default 2 15 text and graticule 3 28 waveform 3 28 Interfaces Centronics 2 8 GPIB 2 8 nominal specifications A 9 RS 232 2 8 user 2 9 Inverting a waveform 3 4 L Landscape output 3 42 LEVEL knob 2 4 LF reject trigger coupling 3 13 Line cord removal 1 3 1 4 Logic probe C 4 Low frequency reject 3 13 Low measurement 3 19 Low Ref 3 19 3 21 Main menu 2 6 2 10 Glossary 3 buttons 2 1 2 11 Glossary 3 MATH button 2 2 3 8 Math waveform 3 8 FFT See FFT math waveform menu 3 3 3 9 Maximum measurement 3 19 Mean measurement 3 20 MEASURE button 2 5 3 17 Measure menu 3 18 Measurement definitions 3 19 Index 4 Measurements 3 17 amplitude 3 20 automated 1 1 3 17 activating 3 18 burst width 3 19 cycle mean 3 20 cycle RMS 3 20 fall time 3 19 frequency 3 19 gated Glossary 2 high 3 19 low 3 19 maximum 3 19 mean 3 20 minimum 3 19 negative duty cycle 3 19 negative overshoot 3 19 negative width 3 19 peak to peak 3 19 period 3 19 positive duty cycle 3 19 positive overshoot 3 19 positive width 3 19 removing 3 20 rise time 3 19 RMS 3 20 Mechanical characteristics nominal specifications A 10 Menu locations B 2 Menus acquisition 3 25 cal 3 59 config 3 59 cursor 3 22 diagnostics 3 59 display 3 27 edge trigger 3 12 horizontal system 2 3 3 6 math 3 3 3 9 measure 3 18 po
36. 0 RS 232 9 pin female to 9 pin female connectors null 012 1379 00 modem 76 inch for AT style computers RS 232 9 pin female to 25 pin female connectors null 012 1380 00 modem 76 inch for PC style computers RS 232 9 pin female to 25 pin male connectors null 012 1298 00 modem 9 feet for serial interface printers RS 232 9 pin female to 25 pin male connectors 15 feet 012 1241 00 for modems Centronics 25 pin male to 36 pin Centronics 012 1214 00 2 4 meter 8 feet for parallel printer interfaces NEC VGA video cable Use an appropriate adapter 13893029 when other than a 9 pin monitor connection is needed C 4 TDS 340A TDS 360 amp TDS 380 User Manual Pp AEP u il Appendix D General Care and Cleaning General Care Protect the oscilloscope from adverse weather conditions The oscilloscope is not waterproof CAUTION To avoid damage to the oscilloscope do not expose it to sprays liquids or solvents Cleaning Inspect the oscilloscope as often as operating conditions require To clean the oscilloscope exterior perform the following steps 1 Remove loose dust on the outside of the oscilloscope with a lint free cloth Use care to avoid scratching the clear plastic display filter 2 Usea soft cloth or paper towel dampened with water to clean the oscillo scope You can use a 7596 isopropyl alcohol solution for more efficient cleaning abrasiv
37. 0 amp TDS 380 User Manual 2 9 Operating Basics i Tektronix TDS 360 H OSCILLOSCOPE QUSS vmm MEASURE och Oo OCH2 CD amp VERTICAL aa HORIZONTAL BI a TRIGGER NA amp POSITION Position gt LEVEL O MATH v O O ORES VERTICAL HORIZONTAL TRIGGER CO MENI MENU MENU OREF2 C CO S some lt q sene gt SETLEVEL O TRIGD CO O READY WAVEFORM OFF FORCE CO TRIGGER oO PROBE COMP 1 Press any ofthe front panel menu buttons 2 Selectan item from the main bottom menu or use leftmost button to pop up selections Tektronix TDS 360 DIGITAL REAL ue OSCILLOSCOPE SELECT C 2 x umu MEASURE OCHI COMO oO OCH2 p CO CD CD CC amp VERTICAL IB dil HORIZONTAL IR all TRIGGER NA a POSITION lt Position gt LEVEL O MATH SO 1 0 OREF 1 onl ge voran uen C E SCALE lt scare gt Sb O TRIGD O READY WAVEFORM OFF FORSE O PROBE COMP 3 Selectan item from the side menu if displayed 4 Adjust menu item values with general purpose knob Figure 2 1 Using menus 1 Push one of the indicated front panel buttons to call up a menu of functions This first menu is the main menu Sometimes the main menu will be a side menu step 3 but mos
38. 14 5 lbs plus weight of rackmount parts Option IR 14 7 kg 32 5 Ibs when the rackmounted oscilloscope is packaged for domestic shipment Rackmount conversion kit 4 5 kg 10 Ibs 7 5 kg 17 5 lbs when kit is packaged for domestic shipment Overall Dimensions Standard Instrument Figure A 1 Height 191 mm 7 5 in with feet and accessories pouch installed 165 mm 6 5 in withoutthe accessories pouch installed Width 362 mm 14 25 in with handle Depth 471 mm 18 55 in stand alone instrument 490 mm 19 28 in with front cover installed 564 mm 22 2 in with handle extended Rackmount Instrument A 10 Height 178 mm 7 in Width 483 mm 19 in Depth 472 mm 18 6 in without handles 517 mm 20 35 in including handles TDS 340A TDS 360 amp TDS 380 User Manual Appendix A Specifications 471 mm 18 55 in 321 2 mm 12 88 in a ilLljl1l Ix l 308 1 mm 165 mm 6 5 in 12 13 in 000000 0 Ovo bebbe 0 0 0L 00 00H 00 000000 Ooo 569 mm 22 4 in ij E E gg 381 mm 15 in Figure A 1 TDS 340A TDS 360 and TDS 380 dimensions TDS 340A TDS 360 amp TDS 380 Use
39. 1cm by 1 cm Intensity Levels Dim and Bright with adjustable Overall Intensity and Contrast Table A 14 Nominal traits I O interface option Name Description GPIB Part of Option 14 1 O interface or TD3F 14A 1 0 interface field upgrade kit complies with IEEE Std 488 1987 RS 232 Part of Option 14 I O interface or TD3F 144A 1 0 interface field upgrade kit a 9 pin male DTE RS 232 interface that complies with EIA TIA 574 90 Centronics Part of Option 14 I O interface or TD3F 144A 1 0 interface field upgrade kit a 25 pin IBM PC type parallel printer interface that complies electrically with Centronics C332 44 RevA Video Signal Output DB 9 rear panel Video connector non interlaced with levels that comply with ANSI Option 14 Only RS343A VGA compatible ata 30 6 kHz sync rate Power Supply Printer Power supply connector to supply power to the Option 3P Printer Pack Option 14 Only Table A 15 Nominal traits power distribution system Name Description 5 mm x 20 mm 3 15 A T 250 V or 1 25 in x 0 25 in 3A T 250 V Fuse Rating TDS 340A TDS 360 amp TDS 380 User Manual A 9 Appendix A Specifications Table A 16 Nominal traits mechanical characteristics Name Weight Standard Rackmount Description 1 0 kg 15 5 Ibs stand alone instrument 8 6 kg 19 lbs with front cover accessories and accessories pouch installed 12 9 kg 28 5 lbs when packaged for domestic shipment 6 6 kg
40. 3 33 Save Recall UTILITY MEASURE RUN STOP SAVE RECALL CURSOR DISPLAY ACQUIRE Figure 3 33 The SAVE RECALL button Pressing the button activates the save recall menu shown in Figure 3 34 A Tek Run 100kS s Sample ARE Save Current Setup To File To Setup1 factory H To Setup2 factory ToSetup3 factory POM Sd0us Chr i wy more j 1of3 Ralf Wadi i ONE MERE RE REM i m Setup Setup Setup Internal O opoIop o I o s Ne Figure 3 34 The save recall menu TDS 340A TDS 360 amp TDS 380 User Manual 3 51 Saving and Recalling Front Panel Setups Using Internal Memory Saving the Current Setup 3 52 Recalling a Setup Recalling the Factory Setup Internal nonvolatile memory contains locations to store up to ten oscilloscope setups NOTE The Tek Secure feature page 3 59 will erase all saved setups To save the current setup press the front panel button SAVE RECALL and then the main menu button Save Current Setup Select a setup from the side menu press the lowermost side menu button labeled more x of 3 to page through the setups Finally press the side menu button OK Overwrite Saved Setup To recall a setup from internal memory press the front panel button SAVE RE CALL and then p
41. 360 amp TDS 380 User Manual Manipulating Waveforms Normal waveform gt Inverted waveform 4 Select Bandwidth Make Fine V div Adjustments Adjust Vertical Position Adjust Vertical Offset Tek Run 200MS s Sample S 1Vi M250ns Ch2 4 O CIOIO OIc Source Coupling Slope Level Holdoff tabe Ch2 Dc x 40mV 500ns fi SS Eeee eee Figure 3 3 Inverting a waveform Press the main menu button Bandwidth Use the side menu to switch between 20 MHz and full bandwidth Press the main menu button Fine Scale to activate the General Purpose Knob Then use the knob to make precise adjustments to the vertical scale setting Press the main menu button Position to activate the General Purpose Knob Then use the knob to adjust vertical position or use the side menu to set the vertical position to 0 divisions Vertical position is limited to a range of 5 divisions NOTE This selection performs the same function as the vertical POSITION knob Press the main menu button Offset to activate the General Purpose Knob Then use the knob to adjust offset or use the side menu to set the offset to O V Offset performs a function similar to the vertical POSITION knob but it has a wider range Use offset to view a waveform that has a large DC bias TDS 340A TDS 360 amp TDS 380 User Manual 3 5 Manipulating Waveforms
42. 70 m operating to 40 000 ft 12190 m non operating Dynamics Random vibration without diskette in floppy disk drive 0 31 g nus from 5 to 500 Hz 10 minutes each axis operating 2 46 g nus from 5 to 500 Hz 10 minutes each axis non operating A 4 TDS 340A TDS 360 amp TDS 380 User Manual Appendix A Specifications Typical Characteristics Typical characteristics are described in terms of typical or average performance Typical characteristics are not warranted Table A 6 Typical characteristics signal acquisition system Name Description Accuracy DC Gain Envelope 3 for sec div settings from 5 Sec Div to 25 usec div Acquisition Mode 2 for sec div settings from 10 us div to 5 ns div TDS 340A 2 for sec div settings from 10 us div to 2 5 ns div TDS 360 2 for sec div settings from 10 pis div to 1 ns div TDS 380 Accuracy DC Voltage Measurement Measurement type DC accuracy Sample Acquisition Mode Any Sample 2 0 x reading Net Offset Offset Accuracy 0 13 div 0 6 mV Delta Volts between any two samples 2 0 x reading 0 26 div 1 2 mV acquired under the same setup and ambient conditions Frequency Limit Upper 20 MHz Band 20 MHz width Limited Step Response Settling Error Volts Div Step Settling error 96 setting amplitude 100 ns 20 ms am nam ov fen In 100 mV div 995 mV div 02 1 Vidiv 10 V div lt 200V lt 25 02 Common Mode Rejection Ratio CMRR 100 1
43. Controls The Trigger LEVEL knob controls the EH TRIGGER Eli trigger The TRIGGER MENU button calls up the trigger menu See page 3 11 for The SET LEVEL TO 50 buit Es TRIGGER more information about triggering e 6 button sets the trigger level at the midpoint between the H 1 SET LEVEL TRIG D peaks of the trigger signal C gt durs The trigger status lights indicate the m status of the triggering system The TRIGGER TRIG D light illuminates when the The FORCE TRIGGER button forces the gt instrument recognizes a valid trigger oscilloscope to start acquiring a waveform 9 9g regardless of whether a trigger event NE deal This button has no effect if the The READY light illuminates when the l acquisition system is stopped instrument can accept a valid trigger and is waiting for that event to occur 2 4 TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics Miscellaneous Controls The MEASURE button calls up the automated measurements menu See page 3 17 for more information about automated measurements The floppy disk drive provides The RUN STOP button starts mass storage for waveforms and stops acquisition setups and hard copies The UTILITY button calls up the utility menu See page 3 59 for more information about utilities The AUTOSET button automatically sets up the instrument to produce a usable display of the input signals See page 2 15 for more information about the autoset function SS Se R
44. Horizontal Operations 3 6 To access horizontal system features press the HORIZONTAL MENU button shown in Figure 3 4 Figure 3 5 shows the horizontal menu 4B HORIZONTAL lt Position gt HORIZONTAL MEN U C gt Horizontal menu SCALE gt L D Figure 3 4 The HORIZONTAL MENU button Tek Run 100kS s Sample Delay IMs Time Base Main Intensified MER Delayed Only a Delayed Runs ric Main DICIC C CO Set to Min Trigger Fit to Position Screen 50 off LES CES FEES ES TEES CES Figure 3 5 The horizontal menu TDS 340A TDS 360 amp TDS 380 User Manual Manipulating Waveforms Use the horizontal menu to perform these tasks Select the Time Base Press the main menu button Time Base Use the side menu to select from these options Press Main Only to show only the main time base Press Intensified to show both the main and delayed time bases The oscilloscope intensifies a portion of the waveform this intensified zone indicates the location of the delayed time base with respect to the main Use the horizontal SCALE knob to change the length of the zone and the General Purpose Knob to change its position Press Delayed Only to show only the delayed time base Use the General Purpose Knob to adjust the delay time the interval between the main and delayed time bases Y
45. Interleaf TIF PCX BMP EPS Encapsulated PostScript DPU 411 II and DPU 412 6 If you are using the GPIB as your hard copy port press the main menu button GPIB Then press the side menu button Hardcopy Talk Only 7 If you are using the RS 232C as your hard copy port press the main menu button RS 232C Then press in turn each side menu button until the desired parameter settings are displayed in the side menu Or if its settings are appropriate press Set RS 232 Parameters to Default Values Remember the parameter settings you select must be compatible with the settings of your hardcopy device or personal computer For additional RS 232 information see the TDS 340A TDS 360 amp TDS 380 Programmer Manual You are now ready to make a hard copy Press the front panel HARDCOPY button Saving a Hard Copy to Disk You can send a hard copy the screen image to a floppy disk to use later in your documentation You cannot recall hard copies from the disk back into the oscilloscope To save a hard copy to disk do the following steps 1 Insert a formatted 720 Kbyte or 1 44 Mbyte floppy disk into the slot at the top of the oscilloscope NOTE To format disks delete hard copy files you save to disk and otherwise manage the disk storage see Using the File System on page 3 55 2 Press the front panel button UTILITY and then press the main menu button System to select the I O menu 3 Press the main menu button Hcp P
46. M OFF Press CH 2 Press TRIGGER MENU Source Ch2 Disconnect the hookup from CH 1 and connect it to CH 2 Set the vertical SCALE to 500 mV div Repeat steps 14 and 15 for Channel 2 Press TRIGGER MENU Source EXT 10 Press MEASURE Select Measrmnt Amplitude Increase the generator amplitude until the amplitude measurement reads 1 5 V if you are checking a TDS 340A or TDS 360 Increase the generator amplitude until the amplitude measurement reads 4 0 V if you are checking a TDS 380 TDS 340A TDS 360 amp TDS 380 User Manual B 13 Appendix B Performance Verification Trigger Level Accuracy DC Coupled 25 Repeat steps 14 and 15 for the external trigger 26 Disconnect the test hookup Trigger level accuracy is verified by the successful completion of the Self Tests and the DC voltage measurement accuracy procedure on page B 5 This completes the performance verification procedure Sine Wave Generator Leveling Procedure Some procedures in this manual require a sine wave generator to produce the necessary test signals If you do not have a leveled sine wave generator use the following procedure to level the output amplitude of your sine wave generator using a power meter Equipment Required Sine wave generator level meter and power sensor power splitter and one precision coaxial cable Time Required About 5 minutes Prerequisites See page B 5 Procedure 1 Connect the equipment as s
47. OI MEASURE as RUN STOP SAVE RECALL CURSOR DISPLAY ACQUIRE The HARDCOPY button starts print operations See page 3 41 for more information about making hard copies SELECT The General Purpose Knob controls many Side menu functions including the cursors The SELECT button switches control from cursor to cursor The ACQUIRE button calls up the acquisition menu See page 3 25 for more information about controlling The SAVE RECALL button calls up the acquisition save recall menu S ee page 3 45 for more information about saving and recalling waveforms See page 3 51 for more information about saving and recalling Setups The CURSOR button calls up the cursor menu See page 3 21 for information about making measurements with cursors The DISPLAY button calls up the display menu See page 3 27 for information about controlling the display TDS 340A TDS 360 amp TDS 380 User Manual 2 5 Operating Basics Display Map Trigger position T m p The waveform Indicates position record ican of vertical bar cursors in the waveform record The value entered with the general purpose knob When the general purpose The Status Readouts show knob is first assigned the trigger status and acquisition Ka VE S 2 f knob icon appears here status mode and sampling rate or number of acquisitions Cursor measurement reado
48. S 340A TDS 360 amp TDS 380 User Manual 3 41 Making Hard Copies Configuring Hard Copy Output Before you can successfully make a hard copy you need to configure the hard copy output to match your hard copy device Use this procedure to configure the hard copy output 1 Press the UTILITY button shown in Figure 3 28 Utility AUTOSET UTILITY MEASURE HARDCOPY RUN STOP SAVE RECALL CURSOR DISPLAY ACQUIRE Figure 3 28 The UTILITY button 2 Repeatedly press the System main menu button until I O is highlighted in the pop up menu This activates the system I O menu shown in Figure 3 29 Tek Run 100ks s Sample j Hard Copy Port P WE gs cht 7 ov Hcp Format GPIB a Portrait Interleaf fra ten Rer232 Spo Figure 3 29 The system I O menu 3 42 TDS 340A TDS 360 amp TDS 380 User Manual Making Hard Copies 3 Press the main menu button Hcp Port Use the side menu to select Centron ics GPIB or RS 232C 4 Press the main menu button Hcp Layout Use the side menu to select Landscape or Portrait 5 Press the main menu button Hcp Format Use the side menu to select your printer format press the lowermost side menu button labeled more x of 3 to page through the formats as necessary Formats available are Thinkjet Deskjet Laserjet Epson
49. UIRE Figure 3 37 The UTILITY button TDS 340A TDS 360 amp TDS 380 User Manual 3 59 Using the Utility Menu Tek Run 100kS s Sample j Tek Secure d MS dgs chr oF V OK gt Erase Setup j amp Ref Memory Set Date Time Beng Erase version Memory Figure 3 38 The utility pop up menu Setting the Date and Time If you need to set the date and time of the oscilloscope do the following steps 1 Press the front panel button UTILITY the main menu button System and then select the popup menu item Config 2 Press the main menu button Set Date amp Time 3 60 TDS 340A TDS 360 amp TDS 380 User Manual Using the Utility Menu Tek Run 100KS s SCISISIC O Date and Time display p 17 40 28 Ke A GISIN OS Figure 3 39 Date and time display 3 Press the side menu button Year Day Month Hour or Minute Use the general purpose knob to set the parameter you have chosen to the value desired 4 Repeat step 3 to set other parameters as desired 5 Press the side menu button OK Enter Date Time to put the new settings into effect This sets the seconds to zero NOTE When setting the clock you can set to a time slightly later than the current time and wait for it to catch up When current time catches u
50. User Manual Tektronix TDS 340A TDS 360 amp TDS 380 Digital Real Time Oscilloscopes 070 9459 04 ce Copyright Tektronix Inc 1995 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 Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY 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 If a product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is
51. als 25 divisions in amplitude and a slew rate of 22 0 divisions ns at the delta time measurement points Signal must be acquired at a volts division setting 25 mV division The WI waveform interval is the time between the samples in the waveform record Also see the footnotes for Sample Rate Range and Equivalent Time or Interpolated Waveform Rates in Table A 11 on page A 8 A 2 TDS 340A TDS 360 amp TDS 380 User Manual Appendix A Specifications Table A 3 Warranted characteristics triggering system Name Description Accuracy Trigger Level DC Coupled Trigger source Sensitivity CH1 or CH2 3 of Setting Net Offset 0 2 div x volts div setting Offset Accuracy External 6 of Setting 20 mV External 10 6 of Setting 200 mV Sensitivity Edge Type Trigger DC Trigger source Sensitivity Coupled CH1 or CH2 TDS 340A 0 35 division from DC to 20 MHz increasing to 1 div at 100 MHz TDS 360 0 35 division from DC to 50 MHz increasing to 1 div at200 MHz TDS 380 0 35 division from DC to 50 MHz increasing to 1 div at 400 MHz External TDS 340A 50 mV from DC to 20 MHz increasing to 150 mV at 100 MHz TDS 360 50 mV from DC to 50 MHz increasing to 150 mV at 200 MHz TDS 380 50 mV from DC to 50 MHz increasing to 500 mV at 400 MHz External 10 TDS 340A 500 mV from DC to 20 MHz increasing to 1 5 V at 100 MHz TDS 360 500 mV from DC to 50 MHz increasing to 1 5 V at 200 MHz TDS 380 500
52. als are available for the TDS 300 Two Channel Digital Real Time Oscilloscopes The Reference gives you a quick overview of how to operate your oscillo scope The XYZ s of Analog and Digital Oscilloscopes provides introductory instruction on basic oscilloscope theory The Programmer Manual provides complete information about controlling the oscilloscope through the Option 14 Communications Board The Service Manual provides information to troubleshoot and repair the oscilloscope at the module level TDS 340A TDS 360 amp TDS 380 User Manual xi Preface Xii TDS 340A TDS 360 amp TDS 380 User Manual Getting Started xp NI Getting Started C o Ol o Ol o Ol 0 o I Tektronix TDS 340A TDS 360 and TDS 380 oscilloscopes are digital signal processors and are superb tools for displaying and measuring waveforms Their performance addresses the needs of both benchtop lab and portable applications with the following features m Two input channels each with a record length of 1 000 samples and 8 bit vertical resolution Both channels acquire waveforms simultaneously m 2 Gigasample second maximum sample rate TDS 380 1 Gigasamples second maximum sample rate TDS 360 500 Megasamples second maximum sample rate TDS 340A m 400 MHz analog bandwidth
53. amp TDS 380 User Manual 3 47 Saving and Recalling Waveforms Tek Run 100kS s Sample Id Save Format i Internal Spreadsheet Mathcad M 500mv EMS Chi FOV Save Recall Recall cave wim Recall wfm Save 1 To s File Factory UE Utilities Current Saved M Setup Internal Setup Setup GISI olo Figure 3 32 Save Format menu Saving a Waveform to the To store a waveform to disk insert a formatted 720 Kbyte or 1 44 Mbyte floppy Disk disk into the slot at the top of the oscilloscope Press the main menu button Save Wfm and then the side menu button To File Use the general purpose knob to select the exact file from the resulting scrollbar list Finally press the side menu button Save To Selected File to complete the operation Recalling a Waveform To recall a waveform from disk to an internal reference memory press the from the Disk front panel button SAVE RECALL and then the main menu button Recall Wfm To Ref Use the general purpose knob to select the exact file from the resulting scrollbar list Only files with ISF extensions are displayed Finally press either the side menu button To Refl or To Ref2 to complete the operation NOTE You can only recall waveforms saved with the ISF extension You cannot read files saved with DAT or CSV extensions back into the oscilloscope 3 48 TDS 340A TDS 360 amp TDS 380 U
54. and all its contents To rename a file or directory turn the general purpose knob until it scrolls the cursor over the name of the file or directory to rename For example to rename Then press the side menu button Rename The labelling menu should appear Turn the general purpose knob or use the main menu arrow keys to select each letter Press Enter Char from the main menu to enter each letter When you have entered the name press the side menu button OK Accept See Figure 3 36 TDS 340A TDS 360 amp TDS 380 User Manual Using the File System Tek Run 100kS s Sample Enter Label Name I i OK BCDEFGHIJKLMNOPORSTUVWXYZ0123436789 amp Accept Enter Char a Delete Clear Figure 3 36 File system Labelling menu Copying a File or To copy a file or directory turn the general purpose knob until it scrolls the Directory cursor over the name of the file to copy Then press the side menu button Copy The file menu reappears with the names of directories to copy to Select a directory and press the side menu button Copy name to Selected Directory To copy all files select the entry The oscilloscope copies all directories recursively That means it copies both the directory and all its contents Printing a File To print a file turn the general purpose knob until it scrolls the cursor over the name of the file to print Then
55. at 60 Hz reducing to 20 1 at 50 MHz with equal Volts Div and Coupling settings on each channel Net Offset Offset Position x Volts Div Net Offset is the voltage level at the center of the A D converter dynamic range Offset Accuracy is the accuracy of this voltage level 1 The samples must be acquired under the same setup and ambient conditions The values given are the maximum absolute difference between the value at the end of a specified time interval after the mid level crossing of the step and the value one second after the mid level crossing of the step expressed as a percentage of the step amplitude TDS 340A TDS 360 amp TDS 380 User Manual A 5 Appendix A Specifications Table A 7 Typical characteristics triggering system Name Error Trigger Position Edge Triggering Description Acquire mode Sample Average Peak Detect Envelope Trigger position error 1 WI 2 ns 2 WI 2 ns Sensitivity Video Type Trigger Source Typical sensitivity CH1 or CH2 0 6 division of video sync signal External 75 mV of video sync signal External 10 150 mV of video sync signal Lowest Frequency for Successful Operation 50 Hz of Set Level to 50 Function Sensitivity Edge Type Trigger Not DC Coupled Trigger coupling Typical signal level for stable triggering AC Same as DC coupled limits for frequencies above 60 Hz Attenuates signals below 60 Hz Noise Reject Three and
56. ated by interpolation of real time samples from a single acquisition or by equivalent time sampling of multiple acquisitions the waveform rate is faster than the real time sample rate For all three cases the waveform rate is 1 Waveform Interval for the waveform record where the waveform interval WI is the time between the samples in the waveform record Table A 12 Nominal traits triggering system Name Range Hold Off Ranges Trigger Level Formats and Field Rates Video Trigger TekP robe Interface External Trigger A 8 Description 500 ns minimum to 10 seconds maximum Source Range Any Channel 12 divisions from center of screen External 11 5 Volts External 10 15 Volts Line 300 Volts Triggers from sync negative composite video 525 to 625 lines 50 Hz to 60 Hz interlaced or noninterlaced systems with scan rates from 15 kHz to 65 kHz such as NTSC PAL or SECAM Level one probe coding TDS 340A TDS 360 amp TDS 380 User Manual Appendix A Specifications Table A 13 Nominal traits display system Name Description CRT Type T inch 17 95 cm diagonal magnetic deflection horizontal raster scan P 31 green phosphor Video Display Resolution 640 pixels horizontally by 480 pixels vertically Display area is 5 04 inch 12 92 cm horizontally by 3 78 inch 9 69 cm vertically Waveform Display Graticule A single graticule 401 x 501 pixels 8 x 10 divisions with divisions that are approximately
57. ave harmonic frequencies that do you should have methods for recognizing and dealing with aliases m Beaware that a source waveform with fast edge transition times creates many high frequency harmonics These harmonics typically decrease in amplitude as their frequency increases m Sample the source signal at rates that are at least 2X that of the highest frequency component having significant amplitude TDS 340A TDS 360 amp TDS 380 User Manual 3 37 Using the FFT FFT Windows 3 38 m Filter the input to bandwidth limit it to frequencies below that of the Nyquist frequency m Recognize and ignore the aliased frequencies If you think you have aliased frequencies in your FFT select the source channel and adjust the horizontal scale to increase the sample rate Since you increase the Nyquist frequency as you increase the sample rate the alias signals should unfold and appear at their proper frequency Nyquist frequency point Be KR A Frequency A A Aliased frequencies Actual frequencies Ne Figure 3 25 How aliased frequencies appear in an FFT The oscilloscope multiplies the FFT time domain record by a Hanning window before it inputs the record to the FFT function Figure 3 26 shows how the time domain record is processed The FFT windowing acts like a bandpass filter between the FFT time domain record and the FFT frequency domain record The shape of the window controls the ability of the FFT to resolve
58. aying 3 29 setting 3 60 Transit case C 3 TRIG D indicator 2 4 TDS 340A TDS 360 amp TDS 380 User Manual Index Trigger controls 2 4 coupling AC 3 12 autoset default 2 15 DC 3 12 HF reject 3 12 LF Reject 3 13 noise reject 3 13 edge 3 11 Glossary 2 edge menu 3 12 external 3 12 holdoff adjustment 3 13 autoset default 2 16 range 3 13 horizontal position adjustment 3 7 horizontal position readout 2 6 level adjustment 3 13 autoset default 2 15 indicator 2 6 set to 50 3 13 LEVEL knob 3 13 mode 3 13 normal 3 13 roll 3 13 nominal specifications A 8 point indicator 2 6 position autoset default 2 15 readout 2 6 slope 3 13 autoset default 2 15 source 3 12 AC 3 12 autoset default 2 15 T 3 28 type autoset default 2 15 typical specifications A 6 video 3 11 3 14 menu 3 14 3 15 point adjustment 3 14 source mode and holdoff 3 14 warranted specifications A 3 TDS 340A TDS 360 amp TDS 380 User Manual TRIGGER MENU button 2 4 3 11 Triggering 3 11 edge 3 11 external 3 12 on the ECL switching threshold 3 13 on the TTL switching threshold 3 13 video 3 14 TTL switching threshold 3 13 Typical specifications A 5 U User interface 2 9 UTILITY button 2 5 3 41 Utility menu 3 59 V V Bars 3 22 Vector accumulate 3 28 display 3 28 Vertical bar cursors Glossary 4 indicators 2 6 VERTICAL MENU button 2 2 3 3 Vertical position for DC
59. button cee cece cence 3 59 Figure 3 38 The utility pop up menu eere 3 60 Figure 3 39 Date and time display eere 3 61 Figure A 1 TDS 340A TDS 360 and TDS 380 dimensions A 1 Figure B 1 Menu locations eee nnn nn B 2 Figure B 2 Hookup for DC voltage measurement accuracy jq eiere e B 6 Figure B 3 Hookup for analog bandwidth check B 8 Figure B 4 Measuring analog bandwidth B 9 Figure B 5 Hookup for sample rate check B 10 Figure B 6 Hookup for trigger sensitivity check B 12 Figure B 7 Measuring trigger sensitivity B 13 Figure B 8 Hookup for sine wave generator leveling B 15 TDS 340A TDS 360 amp TDS 380 User Manual Table of Contents List of Tables Table 2 1 Autoset defaults ccc cece ccc cece ccc nn 2 15 Table 3 1 Measurement definitions eee 3 19 Table A 1 Warranted characteristics signal acquisition system A 1 Table A 2 Warranted characteristics time base system A 2 Table A 3 Warranted characteristics triggering system A 3 Table A 4 Power Requirements leeren A 3 Table A 5 Warranted characteristics environmental A 4 Table A 6 Typical characteristics signal acquisition system
60. correction of FFTs 3 37 Vertical resolution 1 1 Vertical scale readout 2 6 Vertical system 3 3 controls 2 2 coupling autoset default 2 16 fine scale adjustments 3 5 menu 3 4 menu button 2 2 offset autoset default 2 16 offset adjustment 3 5 position adjustments 3 5 POSITION control 2 2 scale autoset default 2 16 scale control 2 2 VGA display C 1 Video trigger 3 14 source mode and holdoff 3 14 trigger point adjustment 3 14 Index 7 Index W Width measurement 3 19 Window Hanning 3 38 Warranted specifications A 1 performance conditions for A 1 Warranty plus service options C 2 X WAVEFORM OFF button 2 2 3 18 3 47 Waveform Rate A 8 E t Gl 5 Waveform record FFT 3 36 Nuus n QS mode 3 28 Waveform record icon 2 6 Waveforms intensity 3 28 inverting 3 4 Y math 3 8 recalling from disk 3 48 YT recalling reference waveforms 3 47 format Glossary 5 reference 3 45 mode 3 28 horizontal lock 3 46 saving to a reference waveform 3 45 saving to disk 3 48 selecting 2 2 XYZs of Analog and Digital Oscilloscopes xi Index 8 TDS 340A TDS 360 amp TDS 380 User Manual
61. ct a scan rate of 15 to 20 kHz m Press Rate 2 to select a scan rate of 20 to 25 kHz W Press Rate 3 to select a scan rate of 25 to 35 kHz m Press Rate 4 to select a scan rate of 35 to 50 kHz W Press Rate 5 to select a scan rate of 50 to 65 kHz Tek Run 100kS s Sample t Scan Rate Rate 2 20 25 kHz Rate 3 25 35 kH2 Rate 4 35 50 kHz Rate 5 50 65 kHz scan Rate Mode Holdoff Any Field BERFIUS TER Auto 500ns eO olojo ioio jis Figure 3 11 The video scan rate menu TDS 340A TDS 360 amp TDS 380 User Manual 3 15 Triggering 3 16 TDS 340A TDS 360 amp TDS 380 User Manual o Q S Taking Measurements TDS 300 Series oscilloscopes have two features that make it easy for you to measure data from a displayed waveform automated measurements and cursors Automated Measurements The oscilloscope can perform 21 different automated measurements on a waveform four measurements at any one time To access these measurements press the MEASURE button shown in Figure 3 12 Measure al UTILITY MEASURE HARDCOPY RUNISTOP SAVE RECALL CURSOR DISPLAY ACQUIRE Figure 3 12 The MEASURE button The MEASURE button activates the measure menu shown in Figure 3 13 TDS 340A TDS 360 amp TDS 380 User Manual 3 17 Taking Measurements
62. curacy is verified by successful completion of the previous procedure Trigger System Checks Check Edge Trigger Sensitivity DC Coupled These procedures check those characteristics that relate to the trigger system and are listed as checked under Warranted Characteristics in the Specifications section Equipment Required One leveled sine wave generator Item 7 or 8 two precision 50 Q coaxial cables Item 2 one 50 Q termination Item 1 and one BNC T connector Item 4 Time Required Approximately 10 minutes Prerequisites See page B 5 TDS 340A TDS 360 amp TDS 380 User Manual B 11 Appendix B Performance Verification Procedure 1 en UD oh Press SAVE RECALL SETUP Recall Factory Setup OK Confirm Factory Init Set the vertical SCALE to 500 mV div Set the horizontal SCALE to 10 ns div Press TRIGGER MENU Mode Normal Press ACQUIRE Mode Average 16 Connect one 50 Q cable to the output of the sine wave generator Attach a BNC T connector to the other end of the cable Connect a second 50 Q cable to the other side of the BNC T connector Connect the BNC T connector to CH 1 connect the cable to the EXT TRIG input through a 50 Q termination as shown in Figure B 6 Leveled Sine Wave Generator O To Ext Trigger 500 Termination Figure B 6 Hookup for trigger sensitivity check 10 11 12
63. d overshoot measurements Use the side menu to select from these options m Press Set Levels in to toggle the units of the reference levels Switch between volts and percent m Press High Ref Mid Ref or Low Ref to select a particular reference level Use the General Purpose Knob to alter the selected reference level The defaults are 90 50 and 10 respectively Taking Measurements with Cursors You can also take quantitative measurements of a waveform with the cursor system To take measurements with cursors follow this procedure 1 Press the front panel button CURSOR shown in Figure 3 14 The CURSOR button calls up the cursor menu shown in Figure 3 15 TDS 340A TDS 360 amp TDS 380 User Manual 3 21 Taking Measurements 3 22 Cursor E i SAVE RECALL CURSOR DISPLAY ACQUIRE Cursor Function Paired M 10ns Chi X 10mVv i Tine Fun on Units seconds ololololololo Figure 3 15 The cursor menu 2 If you want to take a time measurement in Hertz instead of seconds press the main menu button Time Units and use the side menu to switch between the two If the main menu selection Function is not highlighted press its main menu button Use the side menu to select the type of measurement you want to take Select H Bars to take a voltage measurement select V Bar
64. d then waits for you to press the RUN STOP button The definition of a sequence depends on the present acquisition mode In sample or peak detect mode a sequence is a single acquisition In envelope or average mode a sequence is a number of acquisitions equal to the number of envelopes or averages For example when both average and single sequence mode are active and the number of averages is 16 the oscilloscope collects 16 acquisitions averages them displays the resulting waveform and then stops until you press the RUN STOP button To deactivate single sequence mode press RUN STOP button only in the side menu TDS 340A TDS 360 amp TDS 380 User Manual ey Controlling the Display To access the display controls press the front panel button DISPLAY shown in Figure 3 19 Display z r DISPLAY SAVE RECALL CURSOR ACQUIRE Figure 3 19 The DISPLAY button The DISPLAY button activates the display menu shown in Figure 3 20 Display Style Dots e Accumulate s00ms Dot Accumulate gt 00ms M 5ms Chi1 40mV Style g l Readout Graticule Format Intensity Options Full YT olo mppojo o is M CIOI O O Figure 3 20 The display menu TDS 340A TDS 360 amp TDS 380 User Manual 3 27 Controlling the Display Select Display Style Adjust Disp
65. dcopy NOTE To set the date and time refer to Setting the Date and Time on page 3 60 TDS 340A TDS 360 amp TDS 380 User Manual 3 29 Controlling the Display 3 30 TDS 340A TDS 360 amp TDS 380 User Manual E 9T o Using the FFT Using the Fast Fourier Transform FFT you can transform a waveform from a display of its amplitude against time to one that plots the amplitudes of the various discrete frequencies the waveform contains Use FFT math waveforms in the following applications m Testing impulse response of filters and systems m Measuring harmonic content and distortion in systems m Characterizing noise in DC power supplies m Analyzing vibration m Analyzing harmonics in 50 and 60 Hz power lines Description The FFT computes and displays the frequency content of a waveform you acquire as an FFT math waveform This frequency domain waveform is based on the following equation NIZ 1 _ j2ank X k i gt x n e N for k 0 to N 1 ZN 2 n Where x n is a point in the time domain record data array X k is a point in the frequency domain record data array nis the index to the time domain data array k is the index to the frequency domain data array N is the FFT length jis the square root of 1 The resulting waveform is a display of the magnitude of the various frequencies the waveform contains with respect to those frequencies For example Fig ure 3 2 shows the non transformed impuls
66. do s 95 10 03 16 44 06 BACKUP 95 10 03 16 45 28 Delete x PA TEKO0000 SET 95 10 03 16 44 Rename TEK00001 SET 95 10 03 16 44 TEK00002 SET B 95 10 03 TEK0000 1 15F E 95 10 03 TEK00002 ISF E 95 10 03 TEK00003 ISF E 93 10 03 mora 10f2 Save i File Format UI Internal Utilities O oiojojo o o Saved Setup Current Setup Factory Setup Save Recall Recall Save wfm Recall wfm chi To Ref Figure 3 35 File utilities TDS 340A TDS 360 amp TDS 380 User Manual 3 55 Using the File System 3 56 Deleting a File or Directory Renaming a File or Directory NOTE The amount of free space on the disk is shown in the upper right corner of the display The display shows the amount in Kbytes or in Mbytes if the free space is 1 Mbyte or more Bytes are only shown if the free space is less than 1 Kbyte Kbytes are only shown if the free space is 1 Kbyte or more but less than 1 Mbyte 1 Mbyte is shown if the free space is 1 Mbyte or more To delete a file or directory turn the general purpose knob until it scrolls the cursor over the name of the file or directory to delete Then press the side menu button Delete To delete all files in the file list set the cursor to the selection The oscilloscope deletes directories recursively That means it deletes both the directory
67. e air intake and exhaust holes on the sides and bottom of the cabinet where the fan operates are free of any airflow obstructions Leave at least 5 1 cm 2 in free on each side Press the ON STBY button to power up the oscilloscope see Figure 1 1 TDS 340A TDS 360 amp TDS 380 User Manual Getting Started Tektronix TDS 360 55s REA Twe osciLoscore DR ON STBY button Figure 1 1 The ON STBY button Line Fuse Replacement power source before continuing WARNING To avoid injury or death unplug the line cord from the line voltage 1 Have handy a flat bladed screwdriver 2 Setthe oscilloscope so its bottom is down on the work surface and its rear is facing you 3 Find the line cord on the rear cover See Figure 1 2 Unplug the line cord from its receptacle 4 Find the fuse drawer beneath the line voltage plug on the rear panel Now pry open the drawer with a small flat bladed screwdriver and remove the line fuse See Figure 1 2 TDS 340A TDS 360 amp TDS 380 User Manual 1 3 Getting Started Fuse drawer gt Figure 1 2 Line fuse removal 5 Reinstallation Do in reverse steps 4 through 2 to reinstall the line fuse and then the line cord 14 TDS 340A TDS 360 amp TDS 380 User Manual Getting Started Self Test This procedure uses internal routin
68. e generator output to O V Disconnect the cable at the CH 2 input connector gain accuracy is verified by successful completion of the self tests and the voltage measurement accuracy in the previous procedure Offset accuracy is verified by successful completion of the Self Tests and the DC voltage measurement accuracy in the previous procedure TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Check Analog Bandwidth Equipment Required One leveled sine wave generator Item 7 or 8 one 50 Q precision cable Item 2 and one 50 Q termination Item 1 Time Required Approximately 20 minutes Prerequisites See page B 5 Procedure 1 Connect through a 50 Q precision cable and a 50 Q termination the sine wave output of a leveled sine wave generator to CH 1 see Figure B 3 Set the output of the generator to a reference frequency of 50 KHz NOTE If you are verifying a TDS 380 you need a leveled sine wave generator with a 400 MHz output frequency Refer to Sine Wave Generator Leveling Procedure on page B 14 for information on obtaining a leveled output from an unleveled sine wave generator Leveled Sine Wave Generator 00 000000 0 000000 Ooo o 0 SO 62030 0 0 D 50 Q Termination Figure B 3 Hookup for analog bandwidth check 1 Press SAVE RECALL SETUP Recall Factory Setup OK Confirm Facto
69. e or chemical cleaning agents CAUTION To avoid damage to the surface of the oscilloscope do not use any TDS 340A TDS 360 amp TDS 380 User Manual D 1 Appendix D General Care and Cleaning D 2 TDS 340A TDS 360 amp TDS 380 User Manual nl Ms Glossary _ E E 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 Active Cursor The cursor that moves when you turn the General Purpose Knob The readout on the display shows the position of the active cursor 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 that is the ratio of the input measure to the output measure For example a 10X probe attenuates or reduces the i
70. e response of a system in channel 1 at the top of the screen The FFT transformed magnitude appears in the math waveform below the impulse The horizontal scale for FFT math waveform is TDS 340A TDS 360 amp TDS 380 User Manual 3 31 Using the FFT always expressed in frequency division with the beginning left most point of the waveform representing zero frequency DC Tek Run 500MS s Average DEEK T Normal waveform of an impulse response FFT waveform of the magnitude response ICOICOICOICOICS Sl io mv M3 ns Chl 7 somv ath 20 dB 23MHz ololololoJo o Figure 3 21 System response to an impulse Operation To obtain an FFT of your waveform do these basic tasks W Acquire and display it normally that is in the time domain in your choice of input channels m Transform it to the frequency domain using the math waveform menu W Use cursors or automated measurements to measure its parameters Displaying an FFT Perform the following steps to display an FFT math waveform 1 Connect the waveform to the desired channel input and select that channel 2 Adjust the vertical and horizontal scales and trigger the display or press AUTOSET The topic Offset Position and Scale on page 3 37 provides in depth information about optimizing your setup for FFT displays 3 32 TDS 340A TDS 360 amp TDS 380 U
71. eform 3 28 map 2 6 menu 3 27 menu locations B 2 nominal specifications A 9 persistence 3 28 style 3 28 autoset default 2 15 vector accumulate 3 28 vectors 3 28 DISPLAY button 2 5 3 27 Dot accumulate 3 28 Dot display 3 28 Duty cycle measurement 3 19 E ECL switching threshold 3 13 Edge trigger Glossary 2 Envelope acquisition mode 3 26 Glossary 2 Environmental safety and reliability warranted specifications A 4 Equipment list for performance verification B 3 B 16 EXT TRIG input 2 7 3 12 External triggering 3 12 TDS 340A TDS 360 amp TDS 380 User Manual Index F Factory setup 3 52 Fall time measurement 3 19 Fast Fourier Transforms FFTs applications 3 31 FFT definition Glossary 2 FFT frequency domain record 3 36 FFT math waveform 3 31 aliasing 3 37 automated measurements of 3 35 DC correction 3 37 derivation of 3 31 frequency range 3 36 frequency resolution 3 36 procedure for displaying 3 32 procedure for measuring 3 34 record length 3 36 undersampling 3 37 window 3 38 File system 3 55 3 58 confirm delete 3 58 copying a file 3 57 creating a directory 3 57 deleting a file 3 56 formatting a disk 3 58 override lock 3 58 printing a file 3 57 renaming a file 3 56 Fit to screen 3 7 FORCE TRIGGER button 2 4 Frame graticule 3 28 Frequency measurement 3 19 Front panel cover C 3 inputs 2 7 setups saving and recalling 3 51 Full graticule
72. ent definitions Cont Name Definition D Amplitude Voltage measurement The high value less the low value measured over the entire waveform or gated region Amplitude High Low foe Mean Voltage measurement The arithmetic mean over the entire waveform or gated region y Cycle Mean Voltage measurement The arithmetic mean over the first cycle in the waveform or the first cycle in the gated region yy Cycle RMS Voltage measurement The true Root Mean Square voltage over the first cycle in the waveform or the first cycle in the gated region yxp RMS Voltage measurement The true Root Mean Square voltage over the entire waveform or gated region Remove a Measurement 3 20 Using Gating Press the main menu button Remove Measrmnt Use the top four side menu buttons to remove specific measurements or use the lowest side menu button to remove all measurements By default TDS 300 Series oscilloscopes take automated measurements on the entire waveform record If you want a measurement of only a portion of the waveform you can use gating to mark the boundaries of that portion Use this procedure to gate a signal 1 Press the main menu button Select Measrmnt for 2 If necessary press the lowermost side menu button labeled more x out of 6 to page through the available measurements until the measurement you want to take appears in the side menu 3 Then press one of the top four side menu buttons to
73. ents of a sine wave 3 23 Figure 3 17 The ACQUIRE button cee eee cence 3 25 Figure 3 18 The acquire menu eere eee 3 25 Figure 3 19 The DISPLAY button eee 3 27 Figure 3 20 The display menu een 3 27 Figure 3 21 System response to an impulse 3 32 Figure 3 22 Define FFT waveform menu e 3 33 TDS 340A TDS 360 amp TDS 380 User Manual iii Table of Contents Figure 3 23 Cursor measurement of an FFT waveform 3 35 Figure 3 24 FFT time domain record vs FFT frequency domain record 4i r6 Rv ER DP UFU ER ERE EE M 3 36 Figure 3 25 How aliased frequencies appear in an FFT 3 38 Figure 3 26 Windowing the FFT time domain record 3 39 Figure 3 27 The HARDCOPY button eee 3 41 Figure 3 28 The UTILITY button 0 cee cece cence 3 42 Figure 3 29 The system I O menu eene 3 42 Figure 3 30 The reference waveform buttons 3 45 Figure 3 31 A reference waveform menu eee 3 46 Figure 3 32 Save Format menu eee 3 48 Figure 3 33 The SAVE RECALL button eee 3 51 Figure 3 34 The save recallmenu eee 3 51 Figure 3 35 File utilities eeeeeeerenn 3 55 Figure 3 36 File system Labelling menu eese 3 57 Figure 3 37 The UTILITY
74. es to verify that the oscilloscope functions and passes its internal self tests and signal path compensations It also confirms that the oscilloscope was adjusted properly at the time it was last adjusted No test equipment or hookups are required Equipment Required None Time Required Approximately 5 minutes Prerequisites Power up the oscilloscope and allow a 20 minute warm up before doing this procedure Procedure 1 2 Press the front panel button UTILITY Press the main menu button System to select Diag Press the main menu button Execute and then press the side menu button OK Confirm Run Test The internal diagnostics verify proper oscilloscope function This verification takes about 30 seconds While it progresses a variety of test patterns flash on screen When finished status messages appear on the screen Check that the screen reports no failures If it reports a failure the oscillo scope has failed the self test Contact your Tektronix representative for assistance Press CLEAR MENU Press UTILITY and then press the main menu button System to select Cal Check that the word Pass appears in the main menu under the Voltage Reference Timing and Ext Trig menu labels See Figure 1 3 If any of the labels read Fail the oscilloscope has failed the self test Contact your Tektronix representative for assistance TDS 340A TDS 360 amp TDS 380 User Manual 1 5 Getting Started Tek Run 200kKkS s
75. ess Set to 50 to set the trigger level to the midpoint of the trigger source signal Note that this selection performs the same function as the SET LEVEL TO 50 button on the front panel Select Trigger Mode Press the main menu button Mode Use the side menu to select either Auto or Normal mode In normal trigger mode the oscilloscope waits for a valid trigger from the trigger signal source In auto trigger mode the oscilloscope produces an internal trigger in the absence of other trigger events At horizontal scale settings of 100 ms per division and slower auto trigger mode switches to an untriggered roll display When the display is in roll mode the envelope and average acquisition modes does not work properly and the display does not show a trigger T on the waveform Adjust Holdoff Press the main menu button Holdoff to activate the General Purpose Knob Use the knob to adjust holdoff the TDS 300 Series have a holdoff range of 500 ns to 10 s Press the side menu button Set to Min to quickly set the holdoff to 500 ns TDS 340A TDS 360 amp TDS 380 User Manual 3 13 Triggering Vid eo Triggering Select Trigger Source Mode and Holdoff Select Trigger Point The video trigger triggers on field 1 field 2 any field or lines of an NTSC or PAL standard video signal It can also trigger on nonstandard video signals with similar sync signals You can access video trigger settings through the video trigger menu sho
76. ged with the probe To connect a probe to the oscilloscope attach the BNC end of the probe to either the CH 1 or CH 2 input Be sure to twist the probe end clockwise until the BNC is fully locked See Figure 2 3 Figure 2 3 Connecting a probe Use the following procedure to compensate the probe every time you set up your oscilloscope 1 Attach the probe BNC connector to the CH 1 input and attach the probe tip to the PROBE COMP output signal as shown in Figure 2 4 Attach the probe ground clip to the outer ring of the CH 2 BNC TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics N FORCE TRIGGER N 2 PROBE COMP M V pk Q 2 cH 1 CH2 carn AP EXT TRIG Figure 2 4 Probe compensation setup 2 Press AUTOSET The oscilloscope displays the compensation waveform It should resemble the waveform shown in Figure 2 5 Ms ns Chi 7 2524 Oo ooljo o is Figure 2 5 Compensation waveform TDS 340A TDS 360 amp TDS 380 User Manual 2 13 Operating Basics 2 14 3 Check that the waveform indicates correct compensation see Figure 2 6 If the waveform indicates over or undercompensation use the alignment tool provided with the probe to adjust the compensation as shown in Figure 2 7 Probe compensated correctly Probe o
77. gion The ratio of the negative pulse width to the signal period expressed as a percentage NegativeWidth 5 NegativeDutyCycle Period 10096 fi Burst Width Timing measurement The duration of a burst Measured over the entire waveform or gated region Positive Voltage measurement over the entire waveform or gated region Overshoot Max High PositiveOvershoot rae e x 10096 Amplitude Negative Voltage measurement Measured over the entire waveform or gated region Overshoot NegativeOvershoot Low Min X 100 Amplitude fy High The value used as 100 whenever High Ref Mid Ref and Low Ref values are needed as in fall time and rise time measurements Measured over the entire waveform or gated region mp Low The value used as 0 whenever High Ref Mid Ref and Low Ref values are needed as in fall time and rise time measurements Measured over the entire waveform or gated region lir Maximum Voltage measurement The maximum amplitude Typically the most positive peak voltage Measured over the entire waveform or gated region 7 f Minimum Voltage measurement The minimum amplitude Typically the most negative peak voltage RL Measured over the entire waveform or gated region fyf Peak to Peak Voltage measurement The absolute difference between the maximum and minimum amplitude in the entire waveform or gated region TDS 340A TDS 360 amp TDS 380 User Manual Taking Measurements Table 3 1 Measurem
78. gs of 5 mV div or less are used SPC will be adversely affected by input signals with AC components Disconnect or otherwise remove these signals prior to running SPC SPC will take approximately 4 minutes to run M250us Ch2 f 240mV Co zensate Signal Paths Diaa SEIEN Voltage nn External System Path Reference nd Trigger al Pass Pass Pass Oo o oj jojo jolios ain Menu Figure B 1 Menu locations TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Test Equipment Table B 1 Test equipment These procedures use external traceable signal sources to directly check instrument performance If your test equipment does not meet the minimum requirements listed in Table B 1 your test results will be invalid Item number and description Minimum requirements Example Purpose l Termination 50 Q Impedance 50 Q connectors Tektronix part number Checking delay between two required female BNC input male BNC 011 0049 01 channels output 2 Cable Precision Coaxial 50 Q 91 cm 36 in male to Tektronix part number Signal interconnection two required male BNC connectors 012 0482 00 3 Connector Female BNC to dual banana Tektronix part number Several accuracy tests Dual Banana 103 0090 00 4 Connector Male BNC to dual female BNC Tektronix part numbe
79. hoices are available using the side menu buttons m Internal creates files ISF in the internal format of the oscilloscope m MathCad creates files DAT in a format usable by MathCad DAT files are supported by the MathCad numerical analysis program DAT file data is read line by line and placed into variables in the MathCad document You then do whatever calculations are required The DAT format begins with four values acting as a header containing the record length time per sample interval trigger location and trigger offset followed by a linear array of ASCII floating point Y values The recordLength pre trigger sample count and trigger offset are in samples The horizontal scale per sample is in x units and the y value is in y units m Spreadsheet creates files CSV in a format usable by most spreadsheets Excel Lotus 1 2 3 and Quattro Pro CSV files Comma Separated Values contain comma separated X and Y ASCII values on CRLF terminated lines a 2 dimensional array Each value is a floating point number There is one line for each point in a waveform record The X and Y values are displayed in the units of seconds and Volts All scaling to sample increments and offsetting has been done Zero on the X scale is the trigger point with negative values being pretrigger and positive values being posttrigger Refer to Viewing a Waveform on a Spreadsheet on page 3 49 for an example of using this format TDS 340A TDS 360
80. hort horizontal bar of the selected solid cursor relative to 1 Vrms 0 dB from the readout Read the frequency between the long horizontal bars of both paired cursors from the bottom A readout Automated Measurements You can also use automated measurements to measure FFT math waveforms ofan FFT Use the same procedure as is found under Taking Measurements on page 3 17 TDS 340A TDS 360 amp TDS 380 User Manual 3 35 Using the FFT Considerations for Using FFTs FFTs Transform Time Records to Frequency Records FFT Frequency Range and Resolution 3 36 There are several characteristics of FFTs that affect how they are displayed and should be interpreted Read the following topics to learn how to optimize the oscilloscope setup for good display of your FFT waveforms A 1000 point time domain record is input for the FFT Figure 3 24 shows the transformation of that time domain data record into a frequency domain record The resulting frequency domain record is initially 1000 points that contain both positive and negative frequencies Since the negative values mirror the positive values only the positive 500 values are kept Then each value is repeated to make a 1000 point frequency domain record 1000 point time domain record FFT Negative frequencies Positive frequencies Each point duplicated 1000 point frequency domain record Figure 3 24 FFT time domain record vs FFT frequency domai
81. hown in Figure B 8 2 Setthe sine wave generator to a reference frequency of 50 kHz x Adjust the sine wave generator amplitude to the required number of divisions as measured by the oscilloscope Note the reading on the level meter Change the sine wave generator to the desired new frequency Input the correction factor for the new frequency into the level meter Eo EE R Adjust the sine wave generator amplitude until the level meter again reads the value noted in step 4 The signal amplitude is now correctly set for the new frequency TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Sine wave Digitizing oscilloscope Level generator meter O O O lt Input QOOO Output Power splitter EN Attenuators na if necessary Power sensor gt Figure B 8 Hookup for sine wave generator leveling B 15 TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification B 16 TDS 340A TDS 360 amp TDS 380 User Manual ee C r Appendix C Options and Accessories This appendix describes the various options as well as the standard and optional accessories that are available for the TDS 340A TDS 340A and TDS 380 Options Options include the following Option 14 I O Interfaces This option includes GPIB RS 232 and Centronics
82. izontal axis TDS 340A TDS 360 amp TDS 380 User Manual Glossary 5 Glossary Glossary 6 TDS 340A TDS 360 amp TDS 380 User Manual Index Index A Aborting a hard copy 3 41 AC input coupling 3 4 AC trigger coupling 3 12 AC trigger source 3 12 Accessories cables C 4 optional C 3 C 4 pouch C 3 probes C 4 standard C 3 C 4 ACQUIRE button 2 5 3 25 Acquire menu 3 25 Acquisition 3 25 autoset default 2 15 average mode 3 26 defined Glossary 1 envelope mode 3 26 mode 3 26 nominal specifications A 7 peak detect mode 3 26 performance verification B 5 sample mode 3 26 single sequence mode 3 26 typical specifications A 5 warranted specifications A 1 Active cursor Glossary 1 Air intake space 1 2 Aliasing 3 37 Glossary 1 Amplitude measurement 3 20 Analog bandwidth 1 1 Applications FFT math waveforms 3 31 Attenuation Glossary 1 Auto trigger mode 3 13 Glossary 1 Automated measurements 1 1 3 17 of FFT math waveforms 3 35 Autoset 1 1 2 15 Glossary 1 defaults 2 15 AUTOSET button 2 5 2 15 Average acquisition mode 3 26 Glossary 2 TDS 340A TDS 360 amp TDS 380 User Manual Bandwidth analog 1 1 autoset default 2 16 selecting 3 5 Burst width measurement 3 19 C Cables C 4 Cal menu 3 59 Calibration test record B 4 Camera C 3 Carrying case C 3 soft sided C 3 Centronics interface 2 8 3 42 cables C 4 CH 1 2 2 CH 1 input 2 7 CH 2 2 2 CH 2 input 2
83. l purpose knob to align the selected cursor to the bottom or to any amplitude on the FFT waveform you choose Read the amplitude between the two cursors from the A readout Read the amplitude of the selected cursor relative to 1 Vrms 0 dB from the readout See Figure 3 23 Press the side menu button V Bars Use the general purpose knob to align one of the two vertical cursors to a point of interest along the horizontal axis of the waveform Press SELECT to select the alternate cursor Align the alternate cursor to another point of interest on the FFT waveform Read the frequency difference between the cursors from the A readout The cursor units will always be in Hz regardless of the setting in the Time Units side menu TDS 340A TDS 360 amp TDS 380 User Manual Using the FFT Tek Run 500MS s Average Uk 1 Hal EVA 25 2dB widens chi 4 Somv Cursor Function Paired 1 sec Hz O C O o gt CO Figure 3 23 Cursor measurement of an FFT waveform 10 Press the main menu button Function and then the side menu button Paired 11 Use the technique just outlined to place the vertical bar of each paired cursor to the points along the horizontal axis you are interested in 12 Read the amplitude between the short horizontal bar of the two paired cursors from the top most A readout Read the amplitude of the s
84. lay Intensity 3 28 Add or Remove the Trigger T Select Graticule Type Select Display Format Use the display menu to perform these tasks Press the main menu button Style Use the side menu to select from these display styles m Press Vectors to select vector display style The oscilloscope draws a vector between each pair of waveform points W Press Dots to select dot display mode The oscilloscope displays only the waveform points m Press Vector Accumulate or Dot Accumulate to set the display to accumulate dots Use the General Purpose Knob to adjust the time limit from 500 ms to 10 s in 250 ms increments or o The display accumulates dots until it reaches the time limit It then clears the waveform and starts over Dot Accumulate mode shows the latest acquired waveform in dot format while Vector Accumulate mode shows it in vector format Press the main menu button Intensity Use the side menu to select from the following menu items m Press Overall to adjust the intensity of the screen as a whole Use the General Purpose Knob to vary screen intensity m Toggle Text Grat to switch the text and graticule between bright and dim m Toggle Waveform to switch the waveform between bright and dim m Press Contrast to adjust the contrast between the bright and dim settings Use the General Purpose Knob to vary the contrast level from 100 to 250 When you set contrast to 200 the dim setting is half as bright as the brigh
85. mV from DC to 50 MHz increasing to 5 0 V at 400 MHz Input Impedance External Trigger 1 MQ 2 in parallel with 20 pF 2 pF Maximum Input Voltage 300 V DC or AC CAT Il derate at 20 dB decade above 100 kHz to 13 V peak AC at External Trigger 3 MHz and above 1 Net Offset Offset Position x Volts Div Net Offset is the voltage level at the center of the A D converter dynamic range Offset Accuracy is the accuracy of this voltage level Table A 4 Power Requirements Name Description 90 to 132 VACrms continuous range for 47 Hz through 440 Hz 132 to 250 VACg ms continuous range for 47 Hz through 63 Hz Power Consumption 65 Watts 120 VA Source Voltage and Frequency TDS 340A TDS 360 amp TDS 380 User Manual A 3 Appendix A Specifications Table A 5 Warranted characteristics environmental Name Description Atmospherics Temperature without diskette in floppy disk drive M C to 450 C operating 22 C to 460 C non operating Temperature with diskette in floppy disk drive 410 C to 450 C operating or non operating Relative humidity without diskette in floppy disk drive to 80 at or below 429 C or to 20 from 30 C to 450 C operating to 90 ator below 440 C or to 5 from 441 C to 450 C non operating Relative humidity with diskette in floppy disk drive to 80 at or below 429 C orto 20 from 430 C to 450 C operating or non operating Altitude To 15 000 ft 45
86. menu button Recall Factory Setup and then the side menu button OK Confirm Factory Init Press AUTOSET Set the VOLTS DIV to 1 V Use the vertical POSITION knob to center the waveform vertically on screen Set the SEC DIV to 250 us Check that a square wave probe compensation signal of about five divisions in amplitude is on screen Check that one period of the square wave probe compensation signal is about four horizontal divisions on screen Check that the horizontal POSITION knob positions the signal left and right on screen when rotated Press the front panel button TRIGGER MENU the main menu button Mode and then the side menu button Normal Check that the trigger level readout for the main trigger system changes with the trigger LEVEL knob Check that the trigger level knob can trigger and untrigger the square wave signal as you rotate it Leave the signal untriggered Check that pressing SET LEVEL TO 50 triggers the signal that you just left untriggered Press the front panel button ACQUIRE the main menu button Mode and then the side menu button Sample Check that the oscilloscope displays an actively acquiring waveform on screen Note that there is noise present on the peaks of the square wave Press the side menu button Peak Detect Check that the oscilloscope displays an actively acquiring waveform on screen with the noise peak detected Press the side menu button Envelope Check that the oscilloscope
87. mmary Injury Precautions Use Proper Power Cord Avoid Electric Overload Avoid Electric Shock Ground the Product Do Not Operate Without Covers Use Proper Fuse Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere 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 the product only as specified Only qualified personnel should perform service procedures To avoid fire hazard use only the power cord specified for this product To avoid electric shock or fire hazard do not apply a voltage to a terminal that is outside the range specified for that terminal To avoid injury or loss of life do not connect or disconnect probes or test leads while they are connected to a voltage source This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded To avoid electric shock or fire hazard do not operate this product with covers or panels removed To avoid fire hazard use only the fuse type and rating specified for this product To avoid electric shock do not operate this product in wet or damp conditions To avoid injury or fire hazard do not operate this product in an explo
88. mponents of the input up to the bandwidth are accurately displayed 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 Edge Trigger Triggering occurs when the oscilloscope detects the source passing through a specified voltage level in a specified direction the trigger slope Envelope Acquisition Mode A mode in which the oscilloscope acquires and displays a waveform that shows the variation extremes of several acquisitions Fast Fourier Transform FFT An algorithm used to transform a time domain waveform into a frequency domain waveform The frequency domain waveform shows the spectral content of the time domain waveform Gated Measurements A feature that lets you limit automated measurements to a specified portion of the waveform You define the area of interest using the vertical cursors GPIB General Purpose Interface Bus An interconnection bus and protocol that allows you to connect multiple instruments in a network under the control of a controller Also known as IEEE 488 bus It transfers data with eight parallel data lines five control lines and three handshake lines Glossary 2 TDS 340A TDS 360 amp TDS 380 User Manual Glossary Ground GND Coupling Coupling option that disconnects the input signal from the vertical system Hard Copy An electronic copy of the display in a format
89. n TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Table B 2 DC accuracy Vertical scale Sese Generator setting T divs Offsetsetting setting Accuracy limits 1V 98 V 97 1 V to 498 9 V 200 mV 184 V 8 28 V to 48 52 V 50 mV 0 6V 581 mV to 619 mV 50 mV ir 0 9V 881 mV to 919 mV A at50 mV 286 mV to 314 mV 10 mV DR mV 54 6 mV to 465 4 mV 5mV 990 mV 982 mV to 998 mV 12 Set the generator to the level and polarity indicated in Table B 2 for the 13 14 15 16 17 18 19 20 21 DC DC DC Gain Accuracy Offset Accuracy vertical scale position and offset settings you have made The DC test level should appear on screen If it does not return the DC accuracy check has failed for the present vertical scale setting of the current channel Check that the readout for the measurement Mean readout on screen is within the limits listed for the present vertical scale and position offset gen erator settings Repeat steps 7 through 13 until you have checked all the vertical scale settings listed in Table B 2 Record the measurements for each of the 50 mV settings Subtract the second 50 mV measurement from the first and compare the result to the A at 50 mV limits in Table B 2 Press WAVEFORM OFF then press CH 2 Set the generator output to O V Move the test hookup to the CH 2 input Repeat steps 5 through 15 for channel 2 Set th
90. n obtaining a leveled output from an unleveled sine wave generator If available you can use a Tektronix SG504 Leveled Sine Wave Generatior in place of the example equipment TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification Test Record Photocopy this page and use it to record the performance test results for your instrument TDS 340A TDS 360 and TDS 380 test record Instrument Serial Number Certificate Number Temperature RH 96 Date of Calibration Technician Performance test Minimum Incoming Outgoing Maximum DC Voltage Measurement Accuracy CH1VOLTS DIV 1V ne 1 4 0 LL2feL AL 0 iei Lm 198 9 V 200 mV 82807 Ss Fee Uto D TOR SUE 8 52 V 50 mV NV vede un em 619 mV 50 mV 8gga imvV LI 919 mV A at50 mV HB86mV 314 mV 10 mV 46m 2 465 4 mV 5mv 982 MV 998 mV CH2 VOLTS DIV 1V FOMEI green AN 98 9 V 200 mV 39 28V 0 0 020505 uan ous 8 52 V 50 mV g mV 1 00 1 n 619 mV 50 mV 8g8a mV 919 mV Aat50 mV H86mV 314 mV 10 mV 46m LI 465 4 mV 5 mV 982 998 mV Analog bandwidth CH1 APN ee ee N A CH2 425mV 1 LLLLLLL N A Long term sample rate and delay time accuracy 20Div 00 22 2 0 Div Edge trigger sensitivity DC coupled Main Trigger stable trigger 1 1 1 N A Main Trigger Falling stable trigger 1 1 1 1 N A 1 Generator set at 0 6 V Generator set at 0 9 V TDS 340A TDS 360 amp TDS
91. n record When you turn on an FFT waveform the oscilloscope displays the magnitude of the FFT frequency domain record The resolution between the discrete frequen cies displayed in this waveform is determined by the following equation Sample Rate _ Sample Rate a FFT Length 500 samples Where AF is the frequency resolution in Hz Sample Rate is the sample rate of the source waveform FFT Length is the number of independent points in the FFT The sample rate also determines the range these frequencies span they span from Zero to one half the sample rate of the waveform record The value of one half the sample rate is often referred to as the Nyquist frequency or point For TDS 340A TDS 360 amp TDS 380 User Manual Using the FFT example a sample rate of 20 Megasamples second would yield an FFT with a range of 0 to 10 MHz The sample rates available for acquiring data records vary over a range the limits of which depend on your oscilloscope model The oscilloscope displays the sample rate in the acquisition readout at the top of the oscilloscope screen Offset Position and Scale To properly display your FFT waveform scale the source waveform so it is not clipped m You should scale and position the source waveform so it is contained on screen Off screen waveforms may be clipped which will result in errors in the FFT waveform Alternately to get maximum vertical resolution you can display source wavefo
92. n the Lock and Independent modes In Lock mode the horizontal position of the selected reference waveform is locked to the live waveforms In Independent mode the selected reference waveform is independently positionable NOTE When saving to a reference waveform the previous contents of the reference waveform are overwritten Tek Run 1MS s Sample Horizontal Position Lock to Ref2 Save CH2 to Ref2 to Ref2 Save Refi to Ref2 Horizontal Position M Sips Chi 7 160mV 100mv Oo o oelo o ios Figure 3 31 A reference waveform menu 3 46 TDS 340A TDS 360 amp TDS 380 User Manual Saving and Recalling Waveforms The reference waveforms maintain their contents indefinitely regardless of the power state or setup of the instrument To remove a selected reference waveform from the display press WAVEFORM OFF Recalling a Reference To recall a reference waveform simply press its front panel button REF 1 or Waveform REF 2 Using the Disk You can save waveforms to a floppy disk in several useful formats for mass storage or transfer to other applications You can recall waveforms for display as reference waveforms Selecting the Save Format To select the file format that the oscilloscope uses to save waveforms to a file press the front panel button SAVE RECALL and then the main menu button Save Format Three format c
93. nce waveforms respond just like live waveforms to changes in vertical position and scale but they do not respond to horizontal scale adjustments There is no way to horizontally expand a reference waveform NOTE The TekSecure feature page 3 59 erases both reference waveforms and fills them with null data Saving to a Reference To save a live waveform to a reference waveform press one of the reference Waveform waveform buttons REF 1 or REF 2 shown in Figure 3 30 O CH 1 OCH2 C 5 W VERTICAL Z POSITION O MATH Vv O REF 1 VERTICAL Refl C__ MENU OREF 2 C9 Ref 2 2 SCALE e D WAVEFORM OFF N PROBE COMP c 3 5V TL Figure 3 30 The reference waveform buttons TDS 340A TDS 360 amp TDS 380 User Manual 3 45 Saving and Recalling Waveforms If the selected reference waveform does not contain null data it appears on the screen A side menu also appears select one of these options from the side menu see Figure 3 31 m Press Save CHI to Ref x to save the channel 1 waveform to the selected reference waveform W Press Save CH2 to Ref x to save the channel 2 waveform to the selected reference waveform m Press Save MATH to Ref x to save the math waveform to the selected reference waveform m Press Save Ref y to Ref x to save the unselected reference waveform to the selected reference waveform For example Ref2 to Refl or Refl to Ref2 W Press Horizontal Position to toggle betwee
94. ne precision coaxial cable Item 2 Time Required Approximately 35 minutes Prerequisites The oscilloscope must meet the prerequisites listed on page B 5 Procedure 1 Set the output of a DC calibration generator to 0 volts TDS 340A TDS 360 amp TDS 380 User Manual B 5 Appendix B Performance Verification Dual banana to Connect the output of a DC calibration generator through a dual banana connector followed by a 50 2 precision coaxial cable to CH 1 as shown in Figure B 2 DC Calibrator Sense ga _ Output BNC adapter Coaxial cable Figure B 2 Hookup for DC voltage measurement accuracy check 10 11 Press SAVE RECALL SETUP Recall Factory Setup OK Confirm Factory Init Press ACQUIRE Mode Average 16 Press MEASURE Select Measurement Press the side menu button more until the menu label Mean appears in the side menu Press the side menu button Mean Set the vertical SCALE to one of the settings listed in Table B 2 that you have not yet checked Start with the first setting listed Press VERTICAL MENU Position Turn the General Purpose Knob to set the vertical position to the setting listed in Table B 2 The baseline level moves off screen Press the main menu button Offset Use the General Purpose Knob to set vertical offset to the setting listed in Table B 2 for the present vertical scale setting The baseline level remains off scree
95. nel button SAVE RECALL the main menu button Recall Setup and then the side menu button From File Use the general purpose knob to select the exact file from the resulting scrollbar list Only files with set extensions will be displayed Finally press the side menu Recall From Selected File to complete the operation Running the File Utilities To run file utilities see Using the File System on page 3 55 TDS 340A TDS 360 amp TDS 380 User Manual 3 53 Saving and Recalling Front Panel Setups 3 54 TDS 340A TDS 360 amp TDS 380 User Manual eJ Using the File System The TDS 300 oscilloscopes provide file utilities and a floppy disk drive for saving hard copies setups and waveforms This section describes how to manage delete rename and so forth these files using the file system Read the sections listed under For More Information on page 3 58 for information on saving hard copies setups and waveforms Accessing the File Utilities The File Utilities menu lets you delete rename copy print files create a new directory operate the confirm delete and overwrite lock and format disks To bring up the File Utilities menu 1 Press the SAVE RECALL button 2 Press File Utilities in the main menu to bring up the File Utilities side menu See Figure 3 35 Tek Run 500MS s Sample Use to choose eJ L3 37Eh Press SELECT to change J LT File Directory fd0 TESTWFMS Free 1 42MB Utilities f
96. nel inputs terminated with grounding caps both channels set to 10 mV div both channels set to DC Coupling trigger source set to CH 1 acquisition mode set to Sample and time base set to 250 us div Underwriters Laboratories listing to Standard UL3111 1 for Electrical Measuring and Test Equipment 34 Canadian Standards Association certified to Standard CAN CSA C22 2 No 1010 1 92 3 3 These standards are North American interpretations of IEC 1010 Conditions for certification operating temperature 10 C to 55 C maximum operating altitude 2000 m Safety Class IEC 1010 1 Annex H Overvoltage Catagory Il IEC 1010 1 Annex Pollution Degree 2 IEC 1010 1 Emissions comply with FCC Code of Federal Regulations 47 Part 15 Subpart B Class A Limits 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 Category Examples of P roducts in this Category CAT Ill Distribution level mains fixed installation CAT II Local level mains appliances portable equipment CAT I Signal levels in special equipment or parts of equipment telecommu nications electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present A 12 TDS 340A TDS 360 amp TDS 380 User Manual Pp P i Appendix B Performance Verification The proced
97. nput 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 triggerable event Autoset A function of the oscilloscope that automatically produces a stable waveform of usable size Autoset sets up front panel controls based on the characteris tics of the active waveform A successful autoset sets the volts per division time per division and trigger level to produce a coherent and stable waveform display TDS 340A TDS 360 amp TDS 380 User Manual Glossary 1 Glossary Average Acquisition Mode In this mode the oscilloscope 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 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 the active 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 Digital Real Time Digitizing A digitizing technique that samples the input signal with a sample frequency of four to five times the oscilloscope bandwidth Combined with sinx x interpolation all frequency co
98. nventions Throughout these procedures the following conventions apply m Each test procedure uses the following general format Title of Test Equipment Required Time Required Prerequisites Procedure m Refer to Figure B 1 Main menu refers to the menu that labels the seven menu buttons under the display Side menu refers to the menu that labels TDS 340A TDS 360 amp TDS 380 User Manual B 1 Appendix B Performance Verification the five buttons to the right of the display Pop up menu refers to a menu that pops up when a main menu button is pressed Where instructed to use a front panel button or knob select from a main or side menu or verify a readout or status message the name of the button or knob appears in boldface type Instructions for menu selection follow this format FRONT PANEL BUTTON Pop Up if necessary Main Menu Button Side Menu Button For example Push TRIGGER MENU Type Video Trig ger On Lines STOP This symbol denotes information you must read to do the procedure properly Pop Up Menu 4 Tek Run 200kKkS s Sample Signal Path Compensation SPC corrects for DC inaccuracies caused by temperature variations and or long term drift SPC can be run any time after the oscilloscope is warmed up and should be run whenever the oscilloscope s ambient temperature has changed by more than 5 C or once a week if vertical settin
99. ort and then press the side menu button File The file list and its scrollbar will appear TDS 340A TDS 360 amp TDS 380 User Manual 3 43 Making Hard Copies 3 44 4 Turn the general purpose knob to place the scroll bar over the file in which to store the hard copy NOTE Upon power on the oscilloscope creates the wild card file copy format you select Selecting this file and pressing HARDCOPY stores a hard copy in a uniquely named sequentially numbered file For instance if the selected format is Thinkjet the oscilloscope saves the first hard copy you save to the file TEK00001 TJ the second to TEK00002 TJ and so on 5 Press HARDCOPY to copy the screen image to the selected file Saving files to the floppy disk provides a convenient way to store hard copies for later recall and display at a remote site You can load them into your desktop publishing software that runs on a compatible PC TDS 340A TDS 360 amp TDS 380 User Manual C 9 Saving and Recalling Waveforms You can save waveforms into and recall them from reference waveforms that reside in nonvolatile memory You can also save and recall waveforms to and from files on a floppy disk Using Reference Waveforms TDS 300 Series oscilloscopes have two reference waveforms You can use the reference waveforms to store live waveforms channel and math waveforms You can also shift a stored waveform from one reference waveform to the other Refere
100. ou adjust the delay time in coarse increments when Main Only or Intensified are selected and in fine incre ments when Delayed Only is selected The side menu selection Delayed Runs After Main shows the delay time Press Set to Min to set the delay time to its minimum value Adjust Trigger Position Press the main menu button Trigger Position Use the General Purpose Knob to adjust horizontal trigger position or use the side menu to set the trigger position to near the beginning middle or end of the waveform record The TDS 380 maximum pretrigger is 75 Select Fit to Screen Press the main menu button Fit to Screen Use the side menu to select from these options Press Off to display 500 points of the 1000 point waveform record The waveform record icon described on page 2 6 shows the location of the displayed portion of the waveform record Use the horizontal POSITION knob to adjust the portion of the waveform record to display Press On to display the entire 1000 point waveform record If you use this setting to display FFT math waveforms you can view a complete frequency spectrum from DC to the Nyquist frequency TDS 340A TDS 360 amp TDS 380 User Manual 3 7 Manipulating Waveforms Displaying Math Waveforms 3 8 A TDS 300 Series oscilloscope performs math operations on one or both channel waveforms Using one channel waveform the oscilloscope can calculate a Fast Fourier Transform FFT to display the frequency content
101. ower cords appropriate for use in Cords the North America power network All other power cords supplied are approved for the country of use Compliances Consult the product specifications for Overvoltage Category and IEC Classifica tions TDS 340A TDS 360 amp TDS 380 User Manual ix General Safety Summary X TDS 340A TDS 360 amp TDS 380 User Manual Preface Related Manuals This manual provides user information for the TDS 300 Two Channel Digital Real Time Oscilloscopes The manual contains the following chapters and appendices Getting Started contains a brief product description information needed to power on the oscilloscope and a brief procedure to verify that it functions Operating Basics contains user interface probe and autoset information Reference contains task oriented descriptions of oscilloscope features The features are described in order from most basic to more specialized Appendix A Specifications contains typical nominal and warranted specifications for the oscilloscope Appendix B Performance Verification contains procedures you can use to verify that oscilloscope is operating within warranted specifications Appendix C Options and Accessories describes other products that are useful with the oscilloscope Appendix D General Care and Cleaning describes how to care for and clean the oscilloscope Glossary contains a glossary of terms Index contains a full index These other manu
102. p to the time you have set pressing Ok Enter Date Time synchronizes the set time to the current time 6 Press CLEAR MENU to see the date time displayed with the new settings If the date and time is not in the display you need to enable it Refer to Add or Remove Date lime Stamp on page 3 29 for information about how to enable the date and time display TDS 340A TDS 360 amp TDS 380 User Manual 3 61 Using the Utility Menu 3 62 TDS 340A TDS 360 amp TDS 380 User Manual Appendices Pp K Appendix A Specifications This appendix contains complete specifications for the TDS 340A TDS 360 and TDS 380 The specifications are divided into three subsections one for each of three classes of traits Warranted Characteristics Typical Characteristics and Nominal Traits Warranted Characteristics Performance Conditions Warranted characteristics are described in terms of quantifiable performance limits that are warranted This subsection lists only warranted characteristics NOTE In these tables those warranted characteristics that are checked in the Performance Tests starting on page 0 5 appear in boldface type under the column Name The electrical characteristics found in these tables of warranted characteristics apply when the oscilloscope has been adjusted at an ambient temperature between 20 C and 30 C has had a warm up period of at least 20 minutes and is operating a
103. p up Glossary 3 reference waveform 3 3 3 46 save recall setup 3 51 system I O 3 59 trigger 2 4 utility 3 59 vertical system 3 3 3 4 video trigger 3 14 3 15 Mid Ref 3 19 3 21 Min max 3 21 Minimum measurement 3 19 TDS 340A TDS 360 amp TDS 380 User Manual Index N Negative duty cycle measurement 3 19 Negative overshoot measurement 3 19 Negative width measurement 3 19 Noise reject trigger coupling 3 13 Nominal specifications A 7 Normal trigger mode 3 13 Glossary 3 NTSC standard video signal 3 14 Nyquist frequency 3 37 O Offset 3 5 autoset default 2 16 vertical 3 37 ON STBY button 1 2 2 1 Option 14 2 8 3 59 C 1 Optional accessories C 3 Options C 1 I O interfaces C 1 power cords C 1 warranty plus service C 2 Options and accessories C 1 Oscilloscope cart C 3 P Paired cursors 3 22 PAL standard video signal 3 14 Peak Detect mode 3 26 Peak to peak measurement 3 19 Performance tests A 1 Performance verification equipment required B 3 functional test 1 7 1 10 general instructions B 1 B 16 of warranted characteristics B 5 B 16 partial vs complete See Performance Verification General Instructions prerequisites B 5 B 16 purpose and extent of See Performance Verification General Instructions self tests 1 5 1 6 test record B 4 trigger checks B 11 Period measurement 3 19 Pixel Glossary 3 Pop up menu 2 11 Glossary 3 Portrait output
104. r Checking trigger sensitivity BNC T 103 0030 00 5 Coupler Female BNC to dual male BNC Tektronix part number Checking delay between Dual Input 067 0525 02 channels 6 Generator DC Calibration Variable amplitude to 110 V Wavetek 9100 Calibration Checking DC offset gain and accuracy to 0 196 System with Option 250 measurement accuracy 7 Generator 200 kHz to 250 MHz variable Wavetek 9100 Calibration Checking bandwidth and trigger Leveled Sine Wave amplitude from 5 mV to 4 Vp p System with Option 250 sensitivity Medium F requency into 50 O 8 Generator 200 kHz to 400 MHz variable Rohde amp Schwarz SMY with Checking bandwidth and trigger Leveled Sine Wave High Frequency 9 Generator Time Mark 10 Probe 10X included with this instrument amplitude from 5 mV to 4 Vp p into 50 Q Variable marker frequency from 10 ms to 10 ns accuracy within 2 ppm A P6109B TDS 340A P6111B TDS 360 or P6114B TDS 380 probe URV 35 Power Meter and NRV Z8 Power Sensor Wavetek 9100 Calibration System with Option 250 Tektronix number P6109B TDS 340A P6111B TDS 360 or P6114B TDS 380 sensitivity Checking sample rate and delay time accuracy Signal interconnection 1 The high frequency leveled sine wave generator is only required to verify the TDS 380 not the TDS 340A or TDS 360 If you use the example equipment refer to Sine Wave Generator Leveling Procedure on page B 14 for information o
105. r Manual A 11 Appendix A Specifications Table A 17 Certifications and compliances EC Declaration of Conformity Certifications FCC Compliance CSA Certified Power Cords Overvoltage Category Meets intent of Directive 89 336 EE C for Electromagnetic Compatibility and Low Voltage Directive 73 23 EEC for Product Safety Compliance was demonstrated to the following specifications as listed in the Official ournal ofthe European Communities EMC Directive 89 336 EEC EN 55011 Class B Radiated and Conducted Emissions EN 50081 1 Emissions EN 60555 2 AC Power Line Harmonic Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Immunity IEC 801 3 RF Electromagnetic Field Immunity 2 IEC 801 4 Electrical Fast Transient Burst Immunity IEC 801 5 Power Line Surge Immunity Low Voltage Directive 73 23 EEC EN 61010 1 Safety requirements for electrical equipment for measurement control and laboratory use l To maintain emission requirements when connecting to the 1 0 interface of this oscilloscope use only a high quality double shielded braid and foil cable The cable shield must have low impedance connections to both connector housings The VGA cable must also have a ferrite core at both ends Acceptable cables are listed in Table C 6 on page 0 4 2 Performance criteria lt 0 3 division waveform displacement or lt 0 6 division increase in p p noise from 27 MHz to 500 MHz Test conditions both chan
106. ress the main menu button Recall Saved Setup Select a destination setup memory from the side menu press the lowermost side menu button labeled more x of 3 to page through the setups Recalling a setup does not change the menu that is currently displayed If you recall a setup that is labeled factory in the side menu you recall the factory setup The conventional method for recalling the factory setup is described below To recall the default factory setup press the front panel button SAVE RECALL and then press the main menu button Recall Factory Setup Press the side menu button OK Confirm Factory Init to complete the initialization TDS 340A TDS 360 amp TDS 380 User Manual Saving and Recalling Front Panel Setups Using the Disk The disk drive can provide mass storage for an unlimited number of oscilloscope setups NOTE Setups are not transferable between different oscilloscope models or software versions Saving the Current Setup To save a setup on a formatted disk insert a formatted 720 Kbyte or 1 44 Mbyte floppy disk into the slot at the top of the oscilloscope Press the front panel button SAVE RECALL the main menu button Save Setup and then the side menu button To File Use the general purpose knob to select the exact file from the resulting scrollbar list Finally press the side menu Save To Selected File to complete the operation Recalling a Setup To recall a setup stored on disk press the front pa
107. rms with amplitudes up to two divisions greater than that of the screen If you do turn on Pk Pk in the measurement menu and monitor the source waveform for clipping W Use vertical position and vertical offset to position your source waveform As long as the source waveform is not clipped its vertical position and vertical offset will not affect your FFT waveform except at DC DC correction 1s discussed below Normally the output of a standard FFT computation yields a DC value that is twice as large as it should be with respect to the other frequencies The displayed output of the FFT on a TDS 300 oscilloscope is corrected for these errors to show the true value for the DC component of the input signal The Position and Offset must be set to zero for the source waveform in the Vertical menu When measuring the amplitude at DC remember that 1 VDC equals 1 Vrms and the display is in dB Undersampling Aliasing Aliasing occurs when the oscilloscope acquires a source waveform with frequency components outside of the frequency range for the current sample rate In the FFT waveform the actual higher frequency components are under sampled and therefore they appear as lower frequency aliases that fold back around the Nyquist point see Figure 3 25 The greatest frequency that can be input into any sampler without aliasing is one half the sample frequency Since source waveforms often have a fundamen tal frequency that does not alias but h
108. ry Init Set the horizontal SCALE to 10 us div Press TRIGGER MENU Coupling Noise Rej Press ACQUIRE Mode Average 16 Press MEASURE High Low Setup Min Max m E ND E Press the main menu button Select Measurement Now press the side menu button more until the menu label Pk Pk appears in the side menu Press the side menu button Pk Pk 7 Setthe vertical SCALE to 10 mV div TDS 340A TDS 360 amp TDS 380 User Manual Appendix B Performance Verification First increase the reference frequency to the test frequency then decrease the horizontal scale Second read the results from the readout of measurement P k P k 8 Setthe generator output so the CHx Pk Pk readout equals 60 mV 9 Press SET LEVEL TO 50 as necessary to trigger the display 10 Increase the frequency of the generator output to 100 MHz TDS 340A 200 MHz TDS 360 or 400 MHz TDS 380 11 Set the horizontal SCALE to 5 ns div TDS 340A 2 5 ns div TDS 360 or 2 5 ns div TDS 380 12 Press SET LEVEL TO 50 as necessary to trigger the display 13 Check that the Pk Pk readout on screen as shown in Figure B 4 is z 42 5 mV Chi Pk Pk 45 53mV Positive Overshoot Negative Overshoot Amplitude more 30f6 chi 10mY M 5ns Ch1 f 0v SISISIC O etup Min Max bevels High Lows Reference elect i i Remove leasrmnt for chi
109. s s soengu d cee ce A nenn A 5 Nominal Traits 2 28 gla A R E a nn A 7 Appendix B Performance Verification eee B 1 Conventions 4 v pato SC TAS IER FE ee ee RUE Voy FERRERS B 1 Test Equipment eco en ETIN TAI UNT VES s B 3 Test Record a creeps GIC US CREER I RO Id NOU UE HE Le B 4 Performance Test Overview 0 cece cece cette hee B 5 Signal Acquisition System Checks 0 0 e eee eee eee B 5 Time Base System Checks 2 222220 2 een eee eee eee eee B 10 Trigger System Checks oersten aties 80 en Re B 11 Sine Wave Generator Leveling Procedure 00000000 B 14 Appendix C Options and Accessories 0c cece cee e cece C 1 OPIOIDS A c RER nd a eu EC LECCE C 1 Standard Accessories ied aae a CR ERRORS C 3 Optional Accessories sic bf ee RR en E EROR LS C 3 Accessory Probes dns E E ee las C 4 Accessory Cables eee as ar Ce Roe e C 4 Appendix D General Care and Cleaning D 1 General Care ii eoi a UEM Ree hr Se be ee Se a D 1 Cleaning ee EEUU MPH heat D 1 TDS 340A TDS 360 amp TDS 380 User Manual Table of Contents List of Figures Figure 1 1 The ON STBY button eere 1 3 Figure 1 2 Line fuse removal eee 1 4 Figure 1 3 Verifying adjustments and signal path compensation 1 6 Figure 1 4 Hookup for functional test else 1 7 Figure 2 1 Using menus
110. s to take a time measure ment or select Paired to take simultaneous voltage and time measurements TDS 340A TDS 360 amp TDS 380 User Manual Taking Measurements 5 Usethe General Purpose Knob to move one cursor to a desired measurement point For example if you wanted to measure both the peak to peak voltage and period of a sine wave you would start by moving one paired cursor to a valley see Figure 3 16 l M 2Bus Chl 20mV l Function Time Paired Units seconds ae Figure 3 16 Paired cursor measurements of a sine wave 6 Press SELECT 7 Use the General Purpose Knob to move the second cursor to another desired measurement point To continue the example you would move the second cursor to the previous peak 8 Read the measured value s at the upper right corner of the display next to the A sign s Figure 3 16 shows a sine wave with a 5 48 Vp p and a 13 2 us period 6 6 us x 2 TDS 340A TDS 360 amp TDS 380 User Manual 3 23 Taking Measurements 3 24 TDS 340A TDS 360 amp TDS 380 User Manual Controlling Acquisition To access the acquisition controls press the front panel button ACQUIRE shown in Figure 3 17 Acquire SELECT J i MEASURE HARDCOPY RUN STOP L N AUTOSET UTILITY SAVE RECALL CURSOR DISPLAY ACQUIRE
111. sed Expressed as a voltage a DL is equal to 1 25 of a division times the volts division setting 2 The sensitivity ranges from 2 mV div to 10 V div in a 1 2 5 sequence of coarse settings Between consecutive coarse settings the sensitivity can be finely adjusted with a resolution of 1 of the more sensitive setting For example between 50 mV div and 100 mV div the volts division can be set with 0 5 mV resolution TDS 340A TDS 360 amp TDS 380 User Manual A 7 Appendix A Specifications Table A 11 Nominal traits time base system Name Range Sample R ate Range Seconds Division Range Time Base Delay Time Record Length Description TDS 340A 10 Samples s to 500 MSamples s in a 1 2 5 sequence TDS 360 10 Samples s to 1 GSamples s in a 1 2 5 sequence TDS 380 10 Samples s to 2 GSamples s in a 1 2 5 sequence TDS 340A 5 ns div to 5 s div in a 1 2 5 5 sequence TDS 360 2 5 ns div to 5 s div in a 1 2 5 5 sequence TDS 380 1 ns div to 5 s div in a 1 2 5 5 sequence 16 5 ns to 50 seconds 1 000 samples 1 Therange of real time rates expressed in samples second at which a digitizer samples signals at its inputs and stores the samples in memory to produce a record of time sequential samples The Waveform Rate WR is the equivalent sample rate of a waveform record For a waveform record acquired by real time sampling of a single acquisition the waveform rate is the same as the real time sample rate for a waveform cre
112. separate the frequencies and to accurately measure the amplitude of those frequencies The Hanning window is optimized for low leakage and good amplitude measurement accuracy on the different frequency components of the signal If possible adjust the trigger position so that the most interesting parts of the signal in the time domain record are positioned in the center region of the window so that the tapering does not cause severe errors TDS 340A TDS 360 amp TDS 380 User Manual Using the FFT Hanning window FA hd Time domain record after windowing FFT wwe Frequency domain record Figure 3 26 Windowing the FFT time domain record TDS 340A TDS 360 amp TDS 380 User Manual 3 39 Using the FFT 3 40 TDS 340A TDS 360 amp TDS 380 User Manual sce 7 Making Hard Copies Option 14 Equipped Instruments Only By using the Option 14 Communications Interface you can make hard copies of waveforms with the oscilloscope To make a hard copy connect your hard copy device to the appropriate interface on the rear panel and press the HARDCOPY button shown in Figure 3 27 Hardcopy col AUTOSET UTILITY MEASURE RUN STOP SAVE RECALL CURSOR DISPLAY ACQUIRE Figure 3 27 The HARDCOPY button To abort a hard copy enter the System I O menu as described in the next section and press the main menu button Clear Spool TD
113. ser Manual Saving and Recalling Waveforms Viewing a Waveform on a Spreadsheet To save a waveform and view the waveform data using a spreadsheet this example uses EXCEL 1 With a disk in the disk drive press the front panel button SAVE RECALL the main menu button Save Format and then the side menu button Spreadsheet Press the main menu button Save Wfm the side menu button To File and then the side menu button Save to Selected File Remove the disk and place it in your computer drive Start EXCEL Using the EXCEL File menu select Open From the List Files of Type menu select Text Files prn txt csv From the Drives menu select the drive containing the waveform file From the File Name menu select the name of the waveform file Now select OK For information on the CSV data format see Selecting the Save Format on page 3 47 Running the File Utilities To run file utilities see Using the File System on page 3 55 TDS 340A TDS 360 amp TDS 380 User Manual 3 49 Saving and Recalling Waveforms 3 50 TDS 340A TDS 360 amp TDS 380 User Manual a fi Saving and Recalling Front Panel Setups TDS 300 Series oscilloscopes can store up to ten front panel setups in internal memory for an indefinite period You can also save and recall setups to and from a floppy disk To access front panel save and recall features press the SAVE RE CALL button shown in Figure
114. ser Manual Using the FFT 3 Press the front panel MATH button to display a math waveform 4 Press the FFT side menu button to select the FFT waveform To select a different source channel press the FFT side menu button repeatedly See Figure 3 22 Tek Run SOOMS s Average Umi FFT Source Ch1 Math Ch1 Ch2 Chi ch2 ch2 chi Chi x ch2 Chi 100mV 20dB 25MHz W200n Chl 7 O oI ojolio olio Figure 3 22 Define FFT waveform menu NOTE The FFT math waveform vertical scale factor is dBVrys which is dB relative to 1 Vrms 0 dB 1 VRMS 5 Press the HORIZONTAL MENU button and then press the main menu button Fit to Screen 6 Press the side menu button On to display a complete frequency spectrum from DC to the Nyquist frequency TDS 340A TDS 360 amp TDS 380 User Manual 3 33 Using the FFT Cursor Measurements of 3 34 an FFT Once you have displayed an FFT math waveform use cursors to measure its frequency amplitudes 1 2 Be sure MATH is selected in the channel selection buttons Press the front panel button CURSOR the main menu button Function and then the side menu button H Bars Use the general purpose knob to align the selected cursor solid line to the top or to any amplitude on the FFT waveform you choose Press SELECT to select the other cursor Use the genera
115. sive atmosphere TDS 340A TDS 360 amp TDS 380 User Manual vii General Safety Summary Product Damage Precautions Use Proper Power Source Do not operate this product from a power source that applies more than the voltage specified Provide Proper Ventilation To prevent product overheating provide proper ventilation Do Not Operate With If you suspect there is damage to this product have it inspected by qualified Suspected Failures service personnel Safety Terms and Symbols Terms in This Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product viii TDS 340A TDS 360 amp TDS 380 User Manual General Safety Summary Symbols on the Product The following symbols may appear on the product A AN m DANGER Protective Ground ATTENTION Double High Voltage Earth Terminal Refer to Manual Insulated Certifications and Compliances CSA Certified Power CSA Certification includes the products and p
116. t an ambient temperature between 10 C and 55 C unless otherwise noted Table A 1 Warranted characteristics signal acquisition system The minimum single pulse widths for guaranteed 50 or greater amplitude capture are as follows Name Description Accuracy DC Voltage Measurement Measurement type DC accuracy Average Acquisition Mode Average of 216 waveforms 2 0 x reading Net Offset Offset Accuracy DC Gain Sample or Average Acquisition Modes Pulse Response Peak Detect and Envelope Mode Accuracy 0 1 div Delta volts between any two averages of 2 0 x reading 0 15 div 0 3 mV 216 waveforms acquired under the same setup and ambient conditions 2 Sec Div setting Minimum pulse width 5 s div 25 us div 10 ns TDS 340A 10 us div 5 ns div The greater of 10 ns or TDS 360 10 us div 2 5 ns div 0 02 x sec div setting TDS 380 10 us div 1 ns div TDS 340A TDS 360 amp TDS 380 User Manual A 1 Appendix A Specifications Table A 1 Warranted characteristics signal acquisition system Cont The minimum single pulse widths for guaranteed 50 or greater amplitude capture are as follows Name Accuracy Offset Analog Bandwidth DC Coupled Description Volts Div setting Offset accuracy 2 mV div 99 5 mV div 0 4 x Net Offset 3 mV 0 1 div x V div setting 100 mV div 995 mV div 0 4 x Net Offset 30 mV 40 1 div x V div setting 1 V div 10 V
117. t main menus are bottom menus 2 10 TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics 2 Pusha bottom menu button to select a function One of three things result m If the function has no subfunctions it becomes active If it is a variable function you can now use the General Purpose Knob to adjust it step 4 m If the function has subfunctions they appear on the side menu step 3 m The leftmost bottom menu button sometimes activates a pop up menu as shown in Figure 2 2 You can cycle through the pop up menu options by repeatedly pressing the button Each selection calls up different bottom and side menus config M250us Chi J 254mV Ca Dia i dp Hcp Layout System 70 Viu REN Hcp Format Interleaf GPIB Talk Listen RS 232C Kerle Figure 2 2 A pop up menu 3 Push a side menu button to select a subfunction 4 Use the General Purpose Knob to alter variable function or subfunction settings 5 Press the CLEAR MENU button to remove a menu from the screen TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics Using the Probes Connecting a Probe Compensating a Probe 2 12 The TDS 340A TDS 360 and TDS 380 come with two standard accessory probes Use these probes to conduct signals to the oscilloscope For detailed probe specifications and instructions see the instruction manual packa
118. t setting By default TDS 300 oscilloscopes display a T at the trigger point Press the main menu button Readout Options and then toggle the Display T Trigger Point button to remove and add this feature Press the main menu button Graticule and then use the side menu to switch between a full graticule a frame a grid or cross hairs Press the main menu button Format and then use the side menu to switch between YT and XY modes TDS 340A TDS 360 amp TDS 380 User Manual Controlling the Display Add or Remove the You can display the current date and time on screen so that it appears in the Date Time Stamp display on hard copies you print and with any files you store on the floppy disk To enable the date and time stamp in the display do the following steps 1 Press the front panel button DISPLAY and then the main menu button Readout Options Press the side menu button Display Date and Time to toggle the setting to On The date and time are backed up by a battery and need not be set each time you power up the oscilloscope If the date and time are not correct skip steps 4 and 5 and continue with step 1 of Setting the Date and Time on page 3 60 Then redo this procedure Press Clear Menu to remove the menu from the display so the date and time can be displayed See Figure 3 39 The date and time is removed from the display when menus are displayed Press HARDCOPY to print your date time stamped har
119. tains wild card characters This means the oscilloscope creates sequential files whose names are similar except for the sequential numbers that go in the real name in the place of the question marks To format a 720 Kbyte or 1 44 Mbyte disk turn the general purpose knob until it scrolls the cursor over the name of the drive to format in fd0 Then press the side menu button Format See Making Hard Copies on page 3 41 See Saving and Recalling Front Panel Setups on page 3 51 See Saving and Recalling Waveforms on page 3 45 TDS 340A TDS 360 amp TDS 380 User Manual E 1 Using the Utility Menu The utility menu is actually four menus in one Access these menus by pressing the UTILITY button Figure 3 37 and then the leftmost main menu button The pop up menu see Figure 3 38 shows these options The Config menu offers Tek Secure which overwrites all setup and reference memories and the software version identifier as main menu selections The I O menu Option 14 instruments only pertains to making hardcopies see page 3 41 and remote operations refer to the TDS 340A TDS 360 amp TDS 380 Programmer Manual The Cal menu which you should only use in conjunction with the adjust ment procedures The Diag menu which you should only use in conjunction with the Self Test Utility SAVE RECALL CURSOR DISPLAY ACQ
120. tical horizontal and trigger amplifiers caused by ambient temperature changes and component aging You should run SPC at the following times when the ambient temperature varies more than 5 C from the last SPC when using settings equal to or less than 5 mV per division and when performing critical measurements Tek Secure This feature erases all waveform and setup memory locations setup memories are replaced with the factory setup Then it checks each location to verify erasure This feature is useful where the oscilloscope is used to gather security sensitive data Time base The set of parameters that let you define the time and horizontal axis attributes of a waveform record The time base determines when and how long to acquire record points Vertical Bar Cursors The two vertical bars you position to measure the time parameter of a TDS 340A TDS 360 amp TDS 380 User Manual Glossary waveform record The oscilloscope displays the value of the active move able cursor with respect to trigger and the time value between the bars 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 hor
121. tions See page 2 9 for more information about the user interface TDS 340A TDS 360 amp TDS 380 User Manual 2 1 Operating Basics Vertical Controls C O CH 1 e OCH2 The Vertical POSITION knob controls OD VERTICAL ED the vertical position ofthe selected Z POSTION waveform The Waveform Select buttons display CS and selectwaveforms CH1 CH2 MATH REF1 and REF2 A lightnextto a button lt OREF1 VERTICAL illuminates when that waveform i C MENU rg Pe ee C D The VERTICAL MENU button calls up SEES IA the vertical operations menu For more SCALE 3 3 y information about vertical operations WAVEFORM OFF see page 3 3 Connector to chassis ground 87 7 The SCALE knob controls the vertical scale of the selected waveform Probe compensation output See The WAVEFORM OFF button tums page 2 12 for instructions on how to off the selected waveform compensate the probes TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics Horizontal Controls 4B HORIZONTAL position gt s The Horizontal POSITION knob controls the horizontal position of all waveforms HORIZONTAL MENU CT The HORIZONTAL MENU button calls up the horizontal operations menu For more lt b information about horizontal operations See page 3 6 The SCALE knob controls the horizontal scale of the active waveforms TDS 340A TDS 360 amp TDS 380 User Manual 2 3 Operating Basics Trigger
122. ure in this appendix verifies that the TDS 340A TDS 360 and TDS 380 oscilloscopes meet warranted specifications Depending on what you want to accomplish you may prefer to perform another procedure you can find elsewhere in this manual m To rapidly confirm that this oscilloscope functions just do the procedures under Self Tests which begin on page 1 5 Advantages This procedure is quick to do requires no external equipment or signal sources and performs extensive functional and accuracy testing to provide high confidence that the oscilloscope performs properly You can use it as a quick check before making a series of important measurements m To further check functionality do the procedures under Functional Tests that begin on page 1 7 Advantages These procedures require minimal additional time to perform require no additional equipment other than a standard accessory probe and more completely test the internal hardware of this oscilloscope You can use them to quickly determine if the oscilloscope is suitable for putting into service such as when it is first received m If you need a more extensive confirmation of performance do the Perfor mance Tests in this appendix beginning on page B 5 after doing the Functional and Self Tests just referenced Advantages These procedures add direct checking of warranted specifica tions They require more time and suitable test equipment See Equipment Required on page B 3 Co
123. useable by a printer or plotter Holdoff Trigger A specified amount of time after a trigger signal that elapses before the trigger circuit will accept another trigger signal This helps ensure a stable display Horizontal Bar Cursors The two horizontal bars that you position to measure the voltage parameters of a waveform The oscilloscope displays the value of the active moveable cursor with respect to ground and the voltage value between the bars Main Menu A group of related controls for a major oscilloscope function that the oscilloscope displays across the bottom of the screen Main Menu Buttons Bezel buttons under the main menu display They allow you to select items in the main menu Normal Trigger Mode A mode on which 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 Pixel A visible point on the display The oscilloscope display is 640 pixels wide by 480 pixels high Pop Up Menu A submenu of a main menu Pop up menus temporarily occupy part of the waveform display area and present additional choices associated with the main menu selection You can cycle through the options in a pop up menu by repeatedly pressing the main menu button underneath the pop up Pretrigger The specified portion of the waveform record that contains data acquired before the trigger event Record Length The specified number of samples in a
124. uts See page 3 21 for more information about cursors Trigger level indicator Channel ground ig ee deed indicator My QE The Channel readout gt em spe gt shows the vertical scale of coupiing Slope hy Mode Hodo DI orma ns Trigger point indicator Set to TTL H The side menu offers a choice of specific actions Set to ECL Set to 50 The Trigger readout shows the trigger source and level and whether the oscilloscope is triggered on the rising or falling edge of the waveform all active channels qe Source The main menu offers a The Time base readout shows the choice of major actions time base setting M indicates M ain time base D indicates D elayed time base When in video trigger mode the readout displays source and trigger feature Field 1 Field 2 or Lines 2 6 TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics 300V 400V pk CH1 CH2 carn A EXT TRIG The channel BNC inputs CH1 and The EXT TRIG input accepts external CH2 accept electrical signals for trigger signals See page 3 12 for display more information about external triggering TDS 340A TDS 360 amp TDS 380 User Manual 2 7 Operating Basics Rear Panel Connectors
125. vercompensated Probe undercompensated Figure 2 6 How probe compensation affects signals Compensation adjustment Figure 2 7 Location of probe compensation adjustment TDS 340A TDS 360 amp TDS 380 User Manual Operating Basics Using Autoset The TDS 300 Series autoset feature produces a stable triggered display of almost any input signal To use autoset connect a signal to either the CH 1 or CH 2 input connector and press the AUTOSET button shown in Figure 2 8 Autoset SELECT Ce Co AUTOSET UTILITY SAVE RECALL CURSOR DISPLAY ACQUIRE Figure 2 8 The AUTOSET button Table 2 1 specifies the changes autoset makes in your oscilloscope setup Table 2 1 Autoset defaults Control Selected channel Changed by autoset to If none already displayed numerically lowest of the displayed channels Acquire Mode Sample Acquire Stop After RUN STOP button only Display Style Vectors If less than 50 set to 75 Display Intensity Overall Display Format YT Horizontal P osition Horizontal Scale Centered within the graticule window As determined by the signal frequency TDS 340A TDS 360 amp TDS 380 User Manual Horizontal Time Base Main Only Trigger Position Unchanged Trigger Type Edge Trigger Source Numerically lowest of the displayed channels the selected channel Trigger Level Midpoint of data for
126. ving from the display 3 47 Related manuals xi Remote control GPIB port 2 8 RS 232 port 2 8 Removing a measurement 3 20 Resolution vertical 1 1 Rise time measurement 3 19 RMS measurement 3 20 Roll acquisition mode 3 13 Glossary 4 RS 232 port 2 8 RUN STOP button 2 5 3 26 S Sample acquisition mode Glossary 4 interval Glossary 4 mode 3 26 rate 1 1 Sampling Glossary 4 Save format 3 47 SAVE RECALL SETUP button 2 5 3 51 Save recall setup menu 3 51 Saving front panel setups 3 51 Saving waveforms 3 45 Index 6 Scale vertical 3 37 SCALE knob horizontal 2 3 vertical 2 2 Scope camera C 3 Seconds per division fastest setting 1 1 SELECT button 2 5 3 20 3 23 Selected waveform Glossary 4 Service options C 2 SET LEVEL TO 50 button 2 4 3 13 Side menu 2 6 Glossary 4 buttons 2 1 Glossary 4 Signal path compensation Glossary 4 Single sequence mode 3 26 SPC Glossary 4 Specifications A 1 Standard accessories C 3 Start up 1 2 Status readouts 2 6 System I O 3 42 System I O menu 3 59 T Tek Secure 3 52 3 59 Glossary 4 TekSecure 3 45 Test record B 4 Text intensity 3 28 Time base 3 7 Glossary 4 delayed 3 7 delayed runs after main 3 7 fastest setting 1 1 intensified zone 3 7 main 3 7 nominal specifications A 8 performance verification B 10 readout 2 6 warranted specifications A 2 Time base setting autoset default 2 15 Time Date stamp displ
127. wn in Figure 3 10 Tek Run 100kS s Sample E Trigger On Field 1 Field 2 Any Field IO CIOIoI Ic Source Trigger On Scan Rate Mode Holdoff chi ETIAM 15 20 KHZ Auto 500ns Figure 3 10 The video trigger menu Use the video trigger menu to perform these tasks These main menu selections perform exactly as in the edge trigger menu because the two triggers share these parameters For example if you set the edge trigger holdoff to 2 3 ms and then switch to the video trigger its holdoff will also be 2 3 ms Press the main menu button Trigger On to select the part of the video signal on which the oscilloscope will trigger Use the side menu to select from these options W Press Field 1 to trigger on field 1 of the video signal W Press Field 2 to trigger on field 2 of the video signal TDS 340A TDS 360 amp TDS 380 User Manual Triggering m Press Any Field to trigger on any field of the video signal m Press Lines to trigger on all lines of the video signal The video trigger can only trigger on negative going sync If you need to trigger on the positive going sync of a signal simply invert the signal from the vertical menu see page 3 4 Select Scan Rate Press the main menu button Scan Rate to select the scan rate frequency range Use the side menu to select from the following rates see Figure 3 11 m Press Rate 1 to sele

TDS 340A, TDS 360 & TDS 380 Digital Real

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TDS 340A, TDS 360 &amp; TDS 380 Digital Real

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TDS 340A, TDS 360 & TDS 380 Digital Real