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Start Up

Power Connector

Principal Power Switch

Fuse

Figure i: Rear Panel Controls Used in Start Up

Table i: Fuse and Fuse Cap Part Numbers

Fuse

Fuse Part
Number

Fuse Cap Part
Number

.25 inch

1.25 inch (UL 198.6, 3AG):

6 A FAST, 250 V.

159-0013-00

200-2264-00

5 mm

20 mm (IEC 127): 5 A (T),

250 V.

159-0210-00

200-2265-00

Power On

Check that the rear-panel principal power switch is on (Figure i ). The
principal power switch controls all AC power to the instrument.

If the oscilloscope is not powered on (the screen is blank), push the
front-panel ON/STBY button to toggle it on (Figure ii).

The ON/STBY button controls power to most of the instrument circuits.
Power continues to go to certain parts even when this switch is set to
STBY.

Once the oscilloscope is installed, you can leave the principal power
switch on and use the ON/STBY button as the power switch.

Содержание TDS 620

Страница 1: ...Digitizing Oscilloscopes 070 8506 01 Please check for change information at the rear of this manual First Printing AUG 1992 Revised NOV 1992 Advanced Test Equipment Rentals www atecorp com 800 404 ATE...

Страница 2: ...tronix Inc Beaverton Oregon USA E200000 Tektronix United Kingdom Ltd London J300000 Sony Tektronix Japan H700000 Tektronix Holland NV Heerenveen The Netherlands Instruments manufactured for Tektronix...

Страница 3: ...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 ser...

Страница 4: ...been supplied in a safe condition This manual contains some information and warnings which have to be followed by the user to ensure safe operation and to retain the apparatus in safe condition The ap...

Страница 5: ...the oscilloscope through the GPIB interface The TDS 620 640 Reference Tektronix part number 070 8505 01 gives you a quick overview of how to operate your oscilloscope The TDS Family Option 2F Instruc...

Страница 6: ...uttons an arrow marks each transition between a front panel button and a menu or between menus Also whether a name is a main menu or side menu item is clearly indicated Press VERTICAL MENU Coupling ma...

Страница 7: ...eforms 1 8 Example 3 Automated Measurements 1 12 Example 4 Saving Setups 1 17 Concepts Overview 2 1 Triggering 2 2 Acquisition 2 7 Scaling and Positioning Waveforms 2 10 Measurements 2 14 In Detail Ov...

Страница 8: ...ing Setups 3 102 Saving and Recalling Waveforms 3 104 Selecting Channels 3 107 Signal Path Compensation 3 109 Status 3 111 Triggering 3 112 Vertical Control 3 116 Waveform Math 3 119 Zoom 3 122 Append...

Страница 9: ...and display any two channels simultaneously All channels can acquire at the maximum digitizing rate H Waveform Math Invert a single waveform and add subtract and multiply two waveforms On instruments...

Страница 10: ...Product Description Product Description vi...

Страница 11: ...er property H statements identify conditions or practices that could result in personal injury or loss of life These two terms appear on equipment H CAUTION indicates a personal injury hazard not imme...

Страница 12: ...rminals of the oscilloscope Without the protective ground connection all parts of the oscilloscope are potential shock hazards This includes knobs and controls that may appear to be insulators Use the...

Страница 13: ...of the cabinet where the fan operates are free of any airflow obstructions Leave at least 2 inches 5 1 cm free on each side WARNING To avoid electrical shock be sure that the power cord is discon nect...

Страница 14: ...1 Check that the rear panel principal power switch is on Figure i The principal power switch controls all AC power to the instrument 2 If the oscilloscope is not powered on the screen is blank push th...

Страница 15: ...results If the self test fails call your local Tektronix Service Center Depending on the type of failure you may still be able to use the oscilloscope before it is serv iced Power Off Press the ON STB...

Страница 16: ...this feature The P6205 Active Probe is a superb tool for coupling signals to your oscillo scope It teams with the oscilloscope to provide extremely low loading capaci tance to ensure best possible sig...

Страница 17: ...Tutorial Replace this page with the tab divider of the same name...

Страница 18: ......

Страница 19: ...system H Example 4 discusses saving and recalling the oscilloscope setups The Concepts and In Detail sections also teach you about the oscilloscope organization and specific functions All the example...

Страница 20: ...tate Reset the oscilloscope when you begin a new task and need to start fresh with known default settings 1 Press save recall SETUP Figure 1 2 SETUP Button Figure 1 2 SETUP Button Location Main menus...

Страница 21: ...ection see Figure 1 3 3 Press OK Confirm Factory Init side NOTE This manual uses the following notation to represent the sequence of selections you made in steps 1 2 and 3 Press save recall SET UP Rec...

Страница 22: ...l offset level H The trigger readout shows that the oscilloscope is triggering on channel 1 Ch1 on a rising edge and that the trigger level is about 200 300 mV H The time base readout shows that the m...

Страница 23: ...ALE knob clockwise Observe the change in the displayed waveform and the channel readout at the bottom of the display Figure 1 6 The VERTICAL and HORIZONTAL Controls 2 Turn the vertical POSITION knob f...

Страница 24: ...probe compensation signal happens to display well at the default settings of the oscilloscope 1 To create an unstable display slowly turn the trigger MAIN LEVEL knob see Figure 1 7 first one directio...

Страница 25: ...arlier in this exam ple Figure 1 9 The Display After Pressing Autoset NOTE If you are using a passive probe such as the optional P6139A probe the corners on your displayed signal may look rounded or p...

Страница 26: ...on the TDS 620 they are CH 1 CH 2 AUX 1 AUX 2 and MORE Figure 1 11 The Channel Buttons and Lights TDS 640 Shown Each of the channel CH buttons has a light above its label In Figure 1 11 the CH 1 ligh...

Страница 27: ...can change the trigger source by using the TRIGGER MENU button to display the trigger menu 5 Turn the vertical POSITION knob clockwise to move the channel 2 wave form up on the graticule Notice that...

Страница 28: ...sets the vertical controls to that channel It also adds the channel to the display if that waveform is not already displayed 1 Press CH 1 Observe that now the side menu title shows Ch1 Figure 1 13 and...

Страница 29: ...move is not already se lected select that channel using the channel CH button 1 Press WAVEFORM OFF under the vertical SCALE knob Since the CH 2 light was on when you pressed the WAVEFORM OFF button th...

Страница 30: ...nt you want For example a rise time measurement requires at least one rising edge and a frequency measurement needs at least one complete cycle 1 If you are not continuing from the previous example fo...

Страница 31: ...ntil the Frequency item appears Then press Frequency side Observe that the frequency measurement appears within the right side of the graticule area The measurement readout includes the notation Ch1 m...

Страница 32: ...solute voltage levels To examine the current values press Reference Levels main High Ref side The General Purpose Knob The general purpose knob the large knob with the indentation is now set to adjust...

Страница 33: ...ssing the ENTER button The numeric keypad also provides multipliers for engineering exponents such as m for milli M for mega and m for micro To enter these multiplier values press the SHIFT button the...

Страница 34: ...channel using the channel selection buttons The snapshot measurements do not continuously update Snapshot executes a one time capture of all measurements and does not update those measurements unless...

Страница 35: ...ious example follow the instruc tions on page 1 1 under the heading Setting Up for the Examples 2 Press SETUP Recall Factory Setup main OK Confirm Factory Init side 3 Press AUTOSET 4 Press MEASURE Sel...

Страница 36: ...the settings as you wish knowing that you can come back to that setup at any time 8 Press MEASURE Positive Width side to add that measurement to the display Press SETUP Recall Saved Setup main Recall...

Страница 37: ...Concepts Replace this page with the tab divider of the same name...

Страница 38: ......

Страница 39: ...Acquisition on page 2 7 H The waveform scaling and positioning system which changes the dimensions of the waveform display Scaling increases or decreases the waveform displayed size Positioning moves...

Страница 40: ...en a trigger event occurs the oscilloscope starts acquiring samples to build the posttrigger portion the waveform record displayed after or to the right of the trigger event Once a trigger is recogniz...

Страница 41: ...er system only The trigger mode normal or automatic determines whether the oscilloscope will acquire a waveform without a trigger event H Normal this trigger mode requires the oscilloscope be triggere...

Страница 42: ...ff period allows the oscilloscope to trigger on the correct edge resulting in a stable display Holdoff Holdoff Trigger Points Trigger Level Holdoff Acquisition Interval Acquisition Interval Triggers a...

Страница 43: ...rd It lets you properly align and measure data within records Pretrigger data is the part of the record that occurs before the trigger post trigger is the part that occurs after the trigger To help yo...

Страница 44: ...em provides an edge trigger no pulse or logic trig gers When using the delayed time base you can also delay the acquisition of a waveform for a user specified time or a user specified number of delaye...

Страница 45: ...me zero in a waveform record All record points before the trigger event make up the pretrigger portion of the the waveform record Every record point after the trigger event is part of the posttrigger...

Страница 46: ...n linear or sin x x Linear interpolation uses a straight line fit to compute record points between actual acquired samples It assumes all the interpolated points fall in their appropriate point in tim...

Страница 47: ...ignal H AC coupling shows only the alternating components of an input signal H Ground GND coupling disconnects the input signal from the acquisition H Input impedance lets you select either 1 MW or 50...

Страница 48: ...The channel reference icon points to the ground of the waveform record when offset is set to 0 V This is the point about which the waveform contracts or expands when the vertical scale is changed The...

Страница 49: ...dds a voltage to the reference indicator without changing the scale That feature allows you to move the waveform up and down over a large area without decreasing the resolution Offset is useful in cas...

Страница 50: ...ple a signal with frequency components of 500 MHz would need to be sampled at a rate faster than 1 Gigasamples second Aliasing may be prevented by adjusting the horizontal scale or simply press the AU...

Страница 51: ...y After you are finished you can return to your original horizontal scale setting by pressing one menu button The zoom feature is also handy if you have acquired a waveform while using the fastest tim...

Страница 52: ...icule Measurements Graticule measurements provide you with quick visual estimates For exam ple you might look at a waveform amplitude and say it is a little more than 100 mV Simple measurements can be...

Страница 53: ...d line on the display To get the cursor menu press the CURSOR button There are three kinds of cursors available in that menu H Horizontal bar cursors H Bar measure vertical parameters typically volts...

Страница 54: ...c measurements and their defini tions Automated measurements can be made on the entire waveform record or just on a specific part The gating selection in the Measurement menu lets you use the vertical...

Страница 55: ...In Detail Replace this page with the tab divider of the same name...

Страница 56: ......

Страница 57: ...Use this section to answer specific questions about instru ment operation The following tasks are included H Pulse Triggering H Probe Selection H Remote Communication H Saving and Recalling Setups H...

Страница 58: ...bes the purposes of the various buttons and knobs on the front panel of the oscilloscope H The Rear Panel Map shows the various parts of the instrument rear panel H The Display Map shows a typical dis...

Страница 59: ...At a Glance TDS 620 TDS 640 User Manual 3 3 ON STBY Switch page ix CLEAR MENU Removes Menus from the Display Main Menu Buttons page 3 7 Side Menu Buttons page 3 7 Front Panel Map Left Side...

Страница 60: ...ge 3 12 Cursor Measurements page 3 19 Triggering page 3 112 Display Modes page 3 30 Remote Communication page 3 98 VerticalControl page 3 116 Measurement System page 3 65 Saving and Recalling Setups p...

Страница 61: ...Fuse page ix Principal Power Switch page ix Serial Number SIGNAL OUT Provides analog signal output AUX TRIGGER INPUT Provides auxiliary trigger signal input MAIN TRIGGER OUTPUT Provides main trigger T...

Страница 62: ...tal scale and time base type page 3 48 Trigger parameters page 3 114 Cursor measurements page 3 19 Trigger position T page 3 112 Shows what part of the waveform record is displayed page 3 48 Indicates...

Страница 63: ...rst if the button label is blue 2 Press one of these buttons to select from main menu 3 Press one of these buttons to select from side menu if displayed 4 If side menu item has an ad justable value sh...

Страница 64: ...t a Glance In Detail 3 8 Press to display pop ups Press it again to make selection Press here to remove menus from screen A pop up selection changes the other main menu titles To Operate a Pop Up Menu...

Страница 65: ...e 3 39 Press these but tons Cursor Menu see page 3 19 Delayed Trigger Menu see page 3 24 Display Menu see page 3 30 Horizontal Menu see page 3 48 To bring up these menus Acquire Menu see page 3 12 App...

Страница 66: ...Menu see page 3 102 Save Recall Waveform Menu see page 3 104 More Menu see page 3 119 Main Trigger Menu Pulse see page 3 91 Main Trigger Menu Logic see page 3 57 Status Menu see page 3 111 Press thes...

Страница 67: ...buttons To bring up these menus Utility Menu I O see page 3 98 Vertical Channel Menu see page 3 116 Zoom Menu see page 3 122 Utility Menu Calibration see page 3 109 Utility Menu Diagnostics see the Se...

Страница 68: ...the time covered by the waveform record divided by the record length This is the default mode Envelope Mode Envelope mode lets you acquire and display a waveform record that shows the extremes in var...

Страница 69: ...uisitions Uses first sample in each interval over single acquisition Calculates average value for each record point over many acquisitions Multiple Waveform Acquisitions Single Waveform Acquisition Sa...

Страница 70: ...up the acquisition menu Figure 3 2 press SHIFT ACQUIRE MENU Acquisition Mode To choose how the oscilloscope will create points in the waveform record Press SHIFT ACQUIRE MENU Mode main Sample Envelop...

Страница 71: ...he number of acquisitions If you press the button again the oscilloscope will resume taking acquisitions H Press Single Acquisition Sequence side That selection lets you run a single sequence of acqui...

Страница 72: ...illoscope to stop acquisition when limit test conditions have been met limit testing must be turned ON using the Limit Test Setup main menu Setting up limit testing requires several more steps You can...

Страница 73: ...Vertical NOTE Autoset may change vertical position in order to position the wave form appropriately It always sets vertical offset to 0 V 1 Press the Channel Selection button such as CH 1 that corres...

Страница 74: ...orizontal Scale As determined by the signal frequency Horizontal Time Base Main Only Horizontal Record Length Unchanged Limit Test Off Trigger Position Unchanged Trigger Type Edge Trigger Source Numer...

Страница 75: ...paired Fig ure 3 4 Horizontal bar cursors H Bars measure vertical parameters typically volts Vertical bar cursors V Bars measure horizontal parameters typically time or frequency Paired cursors measur...

Страница 76: ...ss TOGGLE to change the selected cursor In tracking mode use the general purpose knob to move both cursors in tandem The two cursors remain a fixed distance time or voltage apart Press TOGGLE to tempo...

Страница 77: ...see Figure 3 7 Non selected Cursor Dashed Line Selected Cursor Solid Line Cursor Readout H Bars Figure 3 6 H Bars Cursor Menu and Readouts Paired cursors can only show voltage differences when they r...

Страница 78: ...both cursors positionable in tandem that is both cursors move in unison and maintain a fixed horizontal or vertical distance between each other 2 In Independent mode use the general purpose knob to mo...

Страница 79: ...l purpose knob The cursor moves faster when the SHIFT button is lighted and the display reads Coarse Knobs in the upper right corner See Measurements on page 2 14 See Waveform Math on page 3 119 for i...

Страница 80: ...r defined time and then starts acquiring see Figure 3 8 Wait User Specified Time Acquire Data Wait for Main Trigger Figure 3 8 Delayed Runs After Main Delayed triggerable looks for a main trigger and...

Страница 81: ...trigger if the main trigger type as defined in the Main Trigger menu is logic if the main trigger type is edge with its source set to auxiliary or if the main trigger type is pulse with the runt trig...

Страница 82: ...elayed Trigger Source Start Posttrigger Acquisition First Trigger After Delay Delayed Trigger Waveform Record Main Trigger Source Delayed Trigger Source Delayed Triggerable By Time Delayed Runs After...

Страница 83: ...on the main time base For Delayed Triggerable After mode the start of the intensified zone corresponds to the possible start point of the delayed time base record The end of the zone continues to the...

Страница 84: ...elect the slope that the delayed trigger will occur on Choose between the rising edge and falling edge slopes When using Delayed Triggerable mode to acquire waveforms two trigger bars are displayed On...

Страница 85: ...d ECL levels That happens because the trigger level range is fixed at center At 100 mV the next smaller setting after 200 mV the trigger range is V which is smaller than the typical TTL 1 4 V or ECL 1...

Страница 86: ...ess DISPLAY Style main Vectors Intensified Samples Dots Infinite Persistence or Variable Persistence side Figure 3 12 H Vectors has the display draw vectors lines between the record points H Dots disp...

Страница 87: ...sity main Overall Text Grat Waveform or Contrast side Enter the intensity percentage values with the keypad or the general purpose knob All intensity adjustments operate over a range from 20 close to...

Страница 88: ...eature you may wish to display the current date and time on screen For more information about displaying and setting the date and time see Date Time Stamping Your Hardcopy on page 3 42 4 Press Display...

Страница 89: ...H Grid displays a frame and a grid H Cross Hair provides cross hairs and a frame H Frame displays just a frame Format There are two kinds of format YT and XY YT is the conventional oscilloscope displ...

Страница 90: ...pe will delete the XY graph of channel 1 versus channel 2 Since selecting YT or XY affects only the display the horizontal and vertical scale and position knobs and menus control the same parameters r...

Страница 91: ...Figure 3 14 Main Time Base Main Time Base Time Div Main Trigger Source Ch 1 Main Trigger Slope Rising Edge Main Trigger Level Figure 3 14 Edge Trigger Readouts The Edge Trigger menu lets you select t...

Страница 92: ...er signal H HF Rej removes the high frequency components of the triggering signal That allows only the low frequency components to pass on to the trigger ing system to start an acquisition High freque...

Страница 93: ...ECL levels That happens because the trigger level range is fixed at center At 100 mV the next small er setting after 200 mV the trigger range is V which is smaller than the typical TTL 1 4 V or ECL 1...

Страница 94: ...pose knob press the SHIFT button before turning the knob When the light above the SHIFT button is on and the display says Coarse Knobs in the upper right corner the general purpose knob speeds up sign...

Страница 95: ...BMPR H Encapsulated PostscriptR Image Mono Plot and Color Plot Some formats particularly Interleaf Postscript TIFF PCX BMP and HPGL are compatible with various desktop publishing packages That means y...

Страница 96: ...jet Laserjet Epson Interleaf TIFF PCX BMP EPS Image EPS Mono EPS Color EPS stands for Encapsulated Postscript or HPGL side Press more side to see all of these format choices 3 Press SHIFT HARDCOPY MEN...

Страница 97: ...copy in process message is removed from the screen You can add hardcopies to the spool until it is full When the spool is filled by adding a hardcopy the message Hardcopy in Process Press HARDCOPY to...

Страница 98: ...ay so the date and time can be displayed See Figure 3 18 The date and time is removed from the display when menus are displayed 4 Press HARDCOPY to print your date time stamped hardcopy If you need to...

Страница 99: ...ibility in choosing a hardcopy device It also makes it easier for you to place oscilloscope screen copies into a desk top publishing system However since the oscilloscope has only a GPIB interface por...

Страница 100: ...GPIB to RS 232 Converter You can put a GPIB to Centronics or GPIB to RS 232 interface converter box between the oscilloscope and the RS 232 or Centronics hardcopy device see Figure 3 20 For example a...

Страница 101: ...s GPIB PCII IIA GPIB package you can operate this setup as follows 1 Use the MS DOS cd command to move to the directory that holds the software that came with your GPIB board For example if you instal...

Страница 102: ...the IBIC program by typing EXIT 7 Type COPY Filename Output port B where Filename is the name you defined in step 5 and Output port is the PC output port your hardcopy device is connected to such as L...

Страница 103: ...he oscilloscope is in help mode pressing any button except HELP or SHIFT turning any knob or pressing any menu item displays help text on the screen that discusses that control The menu selections tha...

Страница 104: ...ifferent portions of it That is particularly useful when you are using larger record sizes and cannot view the entire waveform on one screen To change the horizontal scale and position use the horizon...

Страница 105: ...ase for acquisitions It also lets you set the record length set the trigger position and change the position or scale Main and Delayed Time Base To select between the Main and Delayed views of the tim...

Страница 106: ...eral purpose knob to change the scale values Horizontal Position You can set the horizontal position to specific values in the menu instead of using the Horizontal POSITION knob Press HORIZONTAL MENU...

Страница 107: ...Horizontal Control TDS 620 TDS 640 User Manual 3 51 See Scaling and Positioning Waveforms on page 2 10 See Delayed Triggering on page 3 24 See Zoom on page 3 122 For More Information...

Страница 108: ...on to take if incoming waveform data exceeds the set limits Finally turn limit testing on so that the parameters you have specified will take effect To access limit testing Press SHIFT ACQUIRE MENU to...

Страница 109: ...Limit side Enter the horizontal time tolerance value using the general purpose knob or keypad 5 When you have specified the limit test template as you wish press OK Store Template side This action st...

Страница 110: ...tion if you wish to use the template you just created If you have created more than one template you can compare one channel to one template and the other channel to another template Limit Test Setup...

Страница 111: ...eform with each one compared against its own template How Limit Test operates depends on which type of these comparisons you choose Single Waveform Comparisons When making a single waveform versus a s...

Страница 112: ...more than one waveform fails during the same acquisition the template will track the position of the waveform in the highest numbered channel CH 4 or Aux 2 depending on the TDS model number of your di...

Страница 113: ...RUE logic high or FALSE logic low and whether the TRUE condition is time qualified see page 3 62 A state trigger occurs when the logic inputs to the logic function cause the function to be TRUE or at...

Страница 114: ...lists the definitions for the four types of logic triggers Keep the two classes of logic triggers pattern and state in mind as you apply the defini tions Pattern At the end of trigger holdoff the osc...

Страница 115: ...k input changes state See the definitions for Pattern and State on page 3 58 2The definitions given here are correct for the Goes True setting in the Trigger When menu If that menu is set to Goes Fals...

Страница 116: ...riggering and are covered on page 3 62 Press TRIGGER MENU Type main Logic pop up Class main Pattern or State pop up Trigger When main Goes TRUE or Goes FALSE side Set Thresholds To set the logic thres...

Страница 117: ...nel inputs and the combinational logic When you select Pattern the oscilloscope will trigger on a specified logic combination of the four input channels See page 3 59 for details on opera tions common...

Страница 118: ...lean function to be TRUE for longer than the time you specify Note the position of the trigger indicator in Figure 3 28 Triggering occurs at the point the specified logic function is determined to be...

Страница 119: ...ttern and state triggers The state trigger logic works as follows the oscilloscope waits until the fourth channel meets the selected slope and voltage threshold It then checks the logic function appli...

Страница 120: ...e the type of logic function you want applied to the input channels Press TRIGGER MENU Type main Logic pop up Class main State pop up Define Logic main AND OR NAND or NOR side See Triggering on page 2...

Страница 121: ...4 Table 3 4 gives brief definitions of the automated measurements provided by the oscilloscope for more details see Appendix C Algorithms page A 25 Table 3 4 Measurement Definitions Name Definition A...

Страница 122: ...ured over the entire waveform or gated region Maximum Voltage measurement The maximum amplitude Typically the most positive peak voltage Measured over the entire waveform or gated region Mean Voltage...

Страница 123: ...urement over the entire waveform or gated region PositiveOvershoot Max High Amplitude 100 Positive Width Timing measurement of the first pulse in the waveform or gated region The distance time between...

Страница 124: ...measurements first get a stable display of the wave form to be measured Pressing AUTOSET may help Once you have a stable display press MEASURE to bring up the Measure menu Figure 3 30 Selecting a Meas...

Страница 125: ...warning message Figure 3 30 Measure Menu Removing Measurements The Remove Measrmnt selection provides explicit choices for removing measurements from the display according to their readout position M...

Страница 126: ...of the waveform you want the oscilloscope to measure This is called the gated region 1 Press MEASURE Gating main Gate with V Bar Cursors side see Figure 3 31 Figure 3 31 Measure Menu Gating 2 Using t...

Страница 127: ...pulses H Min max uses the highest and lowest values of the waveform record This setting is best for examine waveforms that have no large flat portions at a common value such as sine wave and triangle...

Страница 128: ...default is 50 Figure 3 32 Measure Menu Reference Levels Delay Measurement The delay measurement lets you measure from an edge on the selected waveform to an edge on another waveform You access the De...

Страница 129: ...want the delayed measurement to be made between Press MEASURE Select Measrmnt main Delay side Delay To main Edges side A side menu of delay edges and directions will appear Choose from one of the comb...

Страница 130: ...e on the selected waveform once and displays the results The measurements are not continuously updated All of the measurements listed in Table 3 4 on page 3 65 except for Delay and Phase are displayed...

Страница 131: ...cute snapshot again H A snapshot is taken on a single waveform acquisition or acquisition sequence The measurements in the snapshot display are not continu ously updated H Be careful when taking autom...

Страница 132: ...gain and or offset errors are too great u2 gain and or u50 mV offset If these errors are within specified limits for your probe you may wish to use another probe If they are not within specification y...

Страница 133: ...ssage or gain compensation did not successfully complete examine the probe connections to the oscilloscope Ensure the probe tip is properly installed in its retractor etc and repeat step 9 H If gain c...

Страница 134: ...obe checked by service personnel You can also check the error log by doing steps 13 and 14 18 After the clock icon disappears verify the word Initialized changed to Pass under Cal Probe in the main me...

Страница 135: ...lowing actions H If the probe has a complex oscilloscope interface it can convey additional information such as a unique identification number the oscilloscope determines whether it is the same probe...

Страница 136: ...a side to use the Probe Cal data last stored to compensate the probe H Press OK Erase Probe Cal Data side to erase the Probe Cal data last stored and use the probe uncompensated H Press CLEAR MENU on...

Страница 137: ...e Pass Different probe Initialized 1Refers to a channel input that was successfully compensated at the time Probe Cal was last executed for the input channel 2If no probe is connected the probe status...

Страница 138: ...Connect the probe tip to PROBE COMPENSATION SIGNAL connect the probe ground lead to PROBE COMPENSATION GND 2 Press SETUP Recall Factory Setup main OK Confirm Factory Init side 3 Press AUTOSET 4 Press...

Страница 139: ...al 3 83 8 Adjust the probe until you see a perfectly flat top square wave see Figure 3 37 on the display Figure 3 38 shows where the adjustment is located Figure 3 38 P6139A Probe Adjustment See Probe...

Страница 140: ...assive circuit compo nents such as resistors capacitors and inductors There are three common classes of passive voltage probes H General purpose high input resistance H Low impedance Zo H High voltage...

Страница 141: ...ance reduces high fre quency loading to the circuit under test That makes Zo probes ideal for timing and phase measurements when amplitude accuracy is not a major concern Zo probes are useful for meas...

Страница 142: ...to change the input imped ance High Speed Active Probes Active probes offer low input capacitance 1 to 2 pF typical while maintaining the higher input resistance of passive probes 10 kW to 10 MW Like...

Страница 143: ...ly current probes use a transformer to convert AC current flux into a voltage signal to the oscilloscope and have a frequency response from a few hundred Hertz up to 1 GHz AC DC current probes include...

Страница 144: ...o the oscilloscope the input impedance automatically becomes 50 W If you then connect a high input resistance passive probe you need to set the input impedance back to 1 MW Vertical Control on page 3...

Страница 145: ...P6501 Opt 02 Buffer Amplifier 1 GHz 1 MW 10X Microprobe with TekProbe Power Cable 750 MHz 1 MW 10X Current AM 503S AM 503S Opt 03 P6021 P6022 CT 1 CT 2 CT 4 AC DC Uses A6302 Current Probe AC DC Uses...

Страница 146: ...61 2 3 Passive high voltage P60091 2 P60091 2 3 P6015A1 2 3 P60091 2 P60091 2 3 P6015A1 2 3 P60091 2 3 P6015A1 2 3 Active differential voltage P60462 3 P60462 3 P60462 3 Current AM 503S2 3 P60211 2 AM...

Страница 147: ...you can set the glitch trigger to reject glitches of either polarity H A runt trigger occurs when the trigger source detects a short pulse that crosses one threshold but fails to cross a second thresh...

Страница 148: ...second threshold before recrossing the first going negative Runt negative Triggering occurs if the oscilloscope detects a negative going pulse that crosses one thresh old going negative but fails to...

Страница 149: ...becomes the pulse trigger source Press TRIGGER MENU Type main Pulse pop up Source main Ch1 or Ch2 side On the TDS 640 you can also press Ch3 or Ch4 side On the TDS 620 you can select Aux1 or Aux2 side...

Страница 150: ...egative pulses 2 Press Width side and set the glitch width using the general purpose knob or keypad Glitch Accept or Reject To specify whether to trigger on glitches or filter out glitches using the G...

Страница 151: ...gering 1 Press TRIGGER MENU Type main Pulse pop up Class main Runt pop up Source main Ch1 Ch2 Ch3 Aux1 on the TDS 620 or Ch4 Aux2 on the TDS 620 side See Figure 3 43 2 Press Polarity main Positive Neg...

Страница 152: ...appears in that menu item Note the position of the trigger indicator in Figure 3 43 Triggering occurs at the point the pulse returns over the first lower threshold going negative without crossing the...

Страница 153: ...Trig When main 2 Press Within Limits side if you want the oscilloscope to trigger on pulses that fall within the specified range If you want it to trigger on pulses that are outside the range then pre...

Страница 154: ...h as the TDS 620 and TDS 640 supports standard commands Use of instruments that support these commands can greatly simplify devel opment of GPIB systems GPIB Interface Requirements You can connect GPI...

Страница 155: ...d to connect two GPIB devices Connector A 24 pin GPIB connector is located on the oscilloscope rear panel The connector has a D type shell and conforms to IEEE Std 488 1 1987 You can stack GPIB connec...

Страница 156: ...er see Figure 3 47 Press SHIFT UTILITY System main I O pop up Port main GPIB pop up Configure main Talk Listen Address Hardcopy Talk Only or Off Bus side H Choose Talk Listen Address for normal contro...

Страница 157: ...Figure 3 47 Utility Menu See Hardcopy on page 3 39 See the TDS Family Programmer Manual Tektronix part number 070 8318 04 See the TDS Family Option 13 Hardcopy Interface Instruction Manual Tektronix p...

Страница 158: ...you turn the oscilloscope off or unplug it To save the current setup of the oscilloscope 1 Press SETUP Save Current Setup main Before doing step 2 note that if you choose a setup location labeled user...

Страница 159: ...ms and any setups used to acquire them Be sure you want to remove all waveforms and set ups because once they are removed you cannot retrieve them To use Tek Secure to remove all stored setups and wav...

Страница 160: ...save a waveform do the following steps 1 Select the channel that has the waveform you want to save Before doing step 2 note that if you choose a reference memory location labeled active see Figure 3 4...

Страница 161: ...ure 3 49 Save Waveform Menu Recalling a Waveform To recall a waveform Press MORE Ref1 Ref2 Ref3 or Ref4 main Note that in Figure 3 50 the main menu items Ref2 Ref3 and Ref4 appear shaded while Ref1 do...

Страница 162: ...Saving and Recalling Waveforms In Detail 3 106 Figure 3 50 More Menu See Selecting Channels on page 3 107 For More Information...

Страница 163: ...y See Figure 3 51 Channel Readout Channel Reference Indicator Figure 3 51 The Channel Readout Selecting channels on the TDS 600 series oscilloscopes is straightforward and easy The channel selection b...

Страница 164: ...the next highest priority waveform Figure 3 52 shows how the oscilloscope prioritizes waveforms 1 CH1 2 CH2 3 CH3 or AUX 1 on the TDS 620 4 CH4 or AUX 2 on the TDS 620 5 MATH1 6 MATH2 7 MATH3 8 REF1 9...

Страница 165: ...e oscilloscope not meeting warranted performance levels at those volts div settings Warranted charac teristics are listed in Appendix B 1 Power on the oscilloscope and allow a 20 minute warm up before...

Страница 166: ...Signal Path Compensation In Detail 3 110 Figure 3 53 Performing a Signal Path Compensation...

Страница 167: ...s information about the Horizontal Zoom Acquisition Display Measure and Hardcopy systems Figure 3 54 This display also tells you the firmware version H Trigger displays parameter information about the...

Страница 168: ...Triggering in the Con cepts section To learn more about using specific triggers and using the delayed trigger system see For More Information on page 3 115 Use the trigger buttons and knobs to quickl...

Страница 169: ...quire Once that is established you can determine how to trigger on it press SET LEVEL TO 50 check trigger source setting etc The oscilloscope recognizes and acts upon FORCE TRIG even when you press it...

Страница 170: ...Time Div Main Trigger Source Ch 1 Main Trigger Level Edge Trigger Figure 3 56 Example Trigger Readouts The record view at the top of the display shows the location of the trigger signal in the wavefo...

Страница 171: ...indicator and level bar are displayed from the Display menu See Display Readout on page 3 31 for more information Each trigger type edge logic and pulse has its own main trigger menu which is describ...

Страница 172: ...ng divisions moves the waveform up and sub tracting them moves the waveform down You also can adjust the waveform position using the offset option in the Vertical menu discussed later in this article...

Страница 173: ...t signal H AC coupling shows only the alternating components of an input signal H Ground GND coupling disconnects the input signal from the acquisition H Input impedance lets you select either 1 MW or...

Страница 174: ...veform to the center of the display Offset Offset lets you subtract DC bias from the waveform so the oscilloscope can acquire the exact part of the waveform you are interested in Offset is useful when...

Страница 175: ...es the standard waveform math features invert add subtract and multiply See the TDS Family Option 2F Instruction Manual if your oscilloscope is equipped with that option To perform waveform math press...

Страница 176: ...e Math waveform definition side Single Wfm Math or Dual Wfm Math main to alter the present math waveform definition see Figure 3 60 The single and dual waveform operations are described separately in...

Страница 177: ...de Toggle the button or use the general purpose knob Supported operators are and 3 Press OK Create Math Wfm side to perform the function NOTE If you select for multiply in step 2 the cursor feature wi...

Страница 178: ...acquisition but you can still use the corresponding menu items to change acquisition Zoom mode does not change the the way horizontal position knob operates To use zoom do the following steps 1 Press...

Страница 179: ...SPLAY Filter main Sin x x Interpolation or Linear Inter polation side Resetting Zoom Defaults Press ZOOM Reset Zoom Factors side see Table 3 9 Table 3 9 Zoom Defaults Parameter Setting Zoom Vertical P...

Страница 180: ...Zoom In Detail 3 124 See Acquisition on page 2 7 See Display Modes on page 3 30 For More Information...

Страница 181: ...Appendices Replace this page with the tab divider of the same name...

Страница 182: ......

Страница 183: ...A 1 International Power Cords Option Power Cord A1 Universal European 220 V 50 Hz A2 UK 240 V 50 Hz A3 Australian 240 V 50 Hz A4 North American 240 V 60 Hz A5 Switzerland 220 V 50 Hz Option B1 Service...

Страница 184: ...illoscope are shipped with the option 1R Option 13 RS 232 Centronics Hardcopy Interface With this option Tektronix ships the oscilloscope equipped with an RS 232 and a Centronics interface that can be...

Страница 185: ...Technology an accepted value of a natural physical constant or a ratio calibration technique The calibration is in compliance with US MIL STD 45662A This option also includes a test data report for th...

Страница 186: ...01 Six inch Alligator Clip Ground Lead 196 3120 00 IC Test Tip quantity one standard optionally available in package of 10 as 015 0201 07 No customer ord erable part num ber for single unit SMT KlipCh...

Страница 187: ...e power cable active fixtured 750 MHz 1 MW 10X H AM 503S DC AC Current probe system AC DC Uses A6302 Current Probe H AM 503S Option 03 DC AC Current probe system AC DC Uses A6303 Current Probe H P6021...

Страница 188: ...f nine colors 016 0633 00 SMT KlipChipTM 20 Adapters SMG50 Low Inductance Spring Tips Two each of five different springs and insulator 016 1077 00 Bayonet Ground Assembly 013 0085 00 Probe Tip to Chas...

Страница 189: ...ny two channels simultaneously Key features they have in common are as follows H A record length of 2 000 samples and 8 bit vertical resolution H An analog bandwidth of 500 MHz H Extensive triggering...

Страница 190: ...unction except the final selection in the side menu assigns the general purpose knob to adjust some function such as the position of measurement cursors on screen or the setting for a channels fine ga...

Страница 191: ...s per Record 50 Samples Division 2000 40 divs 1000 20 divs 500 10 divs Both the delayed only display and the intensified zone on the main intensified display may be delayed by time with respect to the...

Страница 192: ...o any value within the 20 to 80 limits You can specify the mode and manner in which signals are acquired and processed depending on your measurement requirements H You can select the mode for interpol...

Страница 193: ...r Hertz for 1 time Measure Measure can automatically extract parameters from the signal input to the oscilloscope Any four out of the more than 20 parameters available can be displayed to the screen T...

Страница 194: ...of popular output formats such as TIFF PCX BMP and EPS mono or color without requiring you to put the oscilloscope into a system controller environment The hardcopies obtained are based on what is dis...

Страница 195: ...pedance Selections 1 MW or 50 Ranges Offset Volts Div Setting 1 mV div 99 5 mV div 100 mV div 995 mV div 1 V div 10 V div Offset Range V V V Range Position divisions TDS 620 Range Sensitivity CH 1 CH...

Страница 196: ...equential samples 2The range of waveform rates for interpolated waveform records 3The Waveform Rate WR is the equivalent sample rate of a waveform record For a waveform record acquired by real time sa...

Страница 197: ...ce RS 232 Option 13 only RS 232 interface complies with EIA TIA 574 Interface Centronics Option 13 only Centronics interface complies with Centronics interface standard C332 44 Feb 1977 REV A Logic Po...

Страница 198: ...mounted Digitizing Oscilloscope Option 1R 20 5 kg 45 lbs when the rackmounted Digitizing Oscilloscope is packaged for domestic shipment Rackmount conversion kit 2 3 kg 5 lbs parts only 3 6 kg 8 lbs p...

Страница 199: ...other wise noted Table A 14 Warranted Characteristics Signal Acquisition System Name Description Accuracy DC Gain3 5 At 1 mV div 2 0 Accuracy DC Voltage Measurement Averaged3 Measurement Type Average...

Страница 200: ...hen AC 50 Coupled5 4The limits given are for the ambient temperature range of 0_C to 30_C Reduce the upper bandwidth frequencies by 2 5 MHz for each _C above 30_C 5The AC Coupled Lower Frequency Limit...

Страница 201: ...d Rearm for Pulse Type Triggering Pulse Class Glitch Runt Width Minimum Pulse Width 2 ns 2 5 ns 2 ns Minimum Rearm Width 2 ns 5 of Glitch Width Setting 2 5 ns 2 ns 5 of Width Upper Limit Setting 1Net...

Страница 202: ...3 AUX 1 is selected as the trigger source for the main and or delayed trigger systems Table A 18 Warranted Characteristics Environmental Name Description Atmospherics Temperature 0_C to 50_C operating...

Страница 203: ...mV div 99 5 mV div 100 mV div 995 mV div 1 V div 10 V div v2 V v20 V v200 V 20 ns v0 5 v1 0 v1 0 100 ns v0 2 v0 5 v0 5 20 ms v0 1 v0 2 v0 2 1Net Offset Offset Position x Volts Div Net Offset is the v...

Страница 204: ...evel for Stable Triggering Same as the DC coupled limits for fre quencies above 60 Hz Attenuates signals below 60 Hz Three and one half times the DC coupled limits One and one half times the DC couple...

Страница 205: ...Type Trigger DC Coupled in this table Stable counting of events is counting that misses no events 5The minimum signal levels required for stable runt pulse triggering of an acquisition Also see the f...

Страница 206: ...Appendix B Specification Appendices A 24...

Страница 207: ...exact meaning of High and Low depends on which of two calculation methods you choose from the Measure menu s High Low Setup item These are Min max and Histogram Min Max Method defines the 0 and the 1...

Страница 208: ...t work well for two level waveforms with greater than about 100 overshoot HighRef MidRef LowRef Mid2Ref The user sets the various reference levels through the Measure menus Reference Level selection T...

Страница 209: ...negative crossing can be measured Hysteresis is useful when you are measuring noisy signals because it allows the oscillo scope to ignore minor fluctuations in the signal MCross Calculations MCross1...

Страница 210: ...he domain reference location This location is where time 0 TSOFF is the offset between and the actual trigger point In other words it is the trigger sample offset Values range between 0 0 and 1 0 samp...

Страница 211: ...see page A 35 Burst Width Timing measurement The duration of a burst 1 Find MCross1 on the waveform This is MCrossStart 2 Find the last MCross begin the search at EndCycle and search toward StartCycle...

Страница 212: ...n the source waveform to the crossing on the second waveform Delay is not available in the Snapshot display Fall Time Timing measurement The time taken for the falling edge of a pulse to drop from a v...

Страница 213: ...Measured in Hertz Hz where 1 Hz 1 cycle per second If Period 0 or is otherwise bad return an error Frequency 1 Period High 100 highest voltage reference value See High Low earlier in this section Usi...

Страница 214: ...e interpolated value at Otherwise dt For details of the integration algorithm see page A 35 Minimum Amplitude voltage measurement The minimum amplitude Typically the most negative peak voltage Examine...

Страница 215: ...cle between the crossings of two different wave forms Waveforms measured should be of the same frequency or one wave form should be a harmonic of the other Phase is a dual waveform measurement that is...

Страница 216: ...value should never be negative Positive Width Timing measurement The distance time between MidRef default 50 amplitude points of a positive pulse If MCross1Polarity then PositiveWidth MCross2 MCross1...

Страница 217: ...essary 4 RiseTime THR TLR High HighRef LowRe f Lo w THR TLR Rise Time Figure A 3 Rise Time RMS Amplitude voltage measurement The true Root Mean Square voltage If Start End then RMS the interpolated va...

Страница 218: ...time measurements on other waveforms because envelope waveforms contain so many apparent crossings Unless otherwise noted envelope waveforms use either the minima or the maxima but not both determined...

Страница 219: ...es recover from an overdrive condition instantaneously MidRef Both min and max samples are above MidRef so use minima MidRef Both min and max samples are below MidRef so use maxima Figure A 4 Choosing...

Страница 220: ...surements are displayed using Snapshot out of range warnings are NOT available However if you question the validity of any measurement in the snapshot display you can select and display the measuremen...

Страница 221: ...kg 375 pound test strength 2 If you are shipping the oscilloscope to a Tektronix field office for repair attach a tag to the oscilloscope showing the instrument owner and ad dress the name of the per...

Страница 222: ...Appendix E Packaging for Shipment Appendices A 40...

Страница 223: ...6 Acquire of envelopes 10 Channel selection Channel 1 on all others off Cursor H Bar 1 position 10 of graticule height 3 2 divs from the center Cursor H Bar 2 position 90 of the graticule height 3 2 d...

Страница 224: ...splay intensity waveform 80 Display intensity overall 85 Display interpolation filter Sin x x Display style Vectors Display trigger bar style Short Display trigger T On Display variable persistence 50...

Страница 225: ...gic trigger threshold all chan nels pattern and state 1 4 V when 10X probe attached Logic trigger class Pattern Logic trigger logic pattern and state AND Logic trigger triggers when pattern and state...

Страница 226: ...hannel 1 Ch1 Pulse width trigger when Within limits Pulse width upper limit 2 0 ns Pulse width lower limit 2 0 ns Pulse width trigger polarity Positive Saved setups No change Saved waveforms No change...

Страница 227: ...Glossary Index Replace this page with the tab divider of the same name...

Страница 228: ......

Страница 229: ...alue 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...

Страница 230: ...original reference signal Burst width A timing measurement of the duration of a burst Coupling The association of two or more circuits or systems in such a way that power or information can be transf...

Страница 231: ...10 of its amplitude Frequency A timing measurement that is the reciprocal of the period Measured in Hertz Hz where 1 Hz 1 cycle per second Gated Measurements A feature that lets you limit automated me...

Страница 232: ...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 v...

Страница 233: ...he bottom of the screen Main menu buttons Bezel buttons under the main menu display They allow you to select items in the main menu Maximum Amplitude voltage measurement of the maximum amplitude Typi...

Страница 234: ...de Period A timing measurement of the time covered by one complete signal cycle It is the reciprocal of frequency and is measured in seconds Phase A timing measurement between two waveforms of the amo...

Страница 235: ...t that has been sampled such as a voltage to a digital value Real time sampling A sampling mode where the oscilloscope samples fast enough to completely fill a waveform record from a single trigger ev...

Страница 236: ...e menu Menu that appears to the right of the display These selections ex pand on main menu selections Side menu buttons Bezel buttons to the right of the side menu display They allow you to select ite...

Страница 237: ...respect to trigger and the time value between the bars Waveform The shape or form visible representation of a signal Waveform interval The time interval between record points as displayed XY format A...

Страница 238: ...Glossary Glossary G 10...

Страница 239: ...ing 2 12 G 1 Amplitude 3 65 G 1 AND G 1 AND Main Trigger menu 3 61 3 64 Area 3 65 G 1 Attenuation G 1 Auto Main Trigger menu 3 37 3 61 3 93 Automated Measurements Snapshot of 1 15 Automated measuremen...

Страница 240: ...rsor Readouts 3 20 Cursor Speed 3 23 Cursors 2 15 3 19 3 23 G 2 Cycle area 3 65 G 2 Cycle mean 3 65 G 2 Cycle RMS 3 65 G 2 D DANGER statement on equipment vii Date Time On hardcopies 3 42 To set 3 42...

Страница 241: ...quency 1 13 3 66 G 3 Front panel 3 4 Full Display menu 3 33 Full Vertical menu 3 118 Function Cursor menu 3 21 3 22 Fuse ix 3 5 G Gated Measurements 3 70 G 3 Gating Measure menu 3 70 General purpose h...

Страница 242: ...16 Trigger MAIN LEVEL 1 6 2 6 Vertical POSITION 1 5 2 11 3 116 Vertical SCALE 1 5 2 11 3 116 L Landscape Hardcopy menu 3 40 Laserjet 3 39 Laserjet Hardcopy menu 3 40 Layout Hardcopy menu 3 40 Level D...

Страница 243: ...ve duty cycle 3 66 Negative overshoot 3 66 Negative width 3 66 Overshoot G 7 Peak to peak 3 66 G 6 Period 3 66 G 6 Phase 3 66 G 6 Positive duty cycle 3 67 Positive overshoot 3 67 Positive width 3 67 P...

Страница 244: ...Utility menu 3 100 Portrait Hardcopy menu 3 40 Position Vertical 2 11 3 116 Position Vertical menu 3 118 Positive duty cycle 3 67 Positive overshoot 3 67 Positive width 3 67 Positive Main Trigger menu...

Страница 245: ...e Recall Setup menu 3 10 3 102 factory status 3 102 Recall Factory Setup 3 103 Recall Saved Setup 3 103 Save Current Setup 3 102 user status 3 102 Save Recall WAVEFORM button 3 104 Save Recall Wavefor...

Страница 246: ...ntal menu 3 25 3 49 Time Units Cursor menu 3 23 Time to voltage converter 3 88 TOGGLE button 2 15 3 22 G 9 Tracking Mode Cursor 2 16 Tracking Cursor menu 3 22 Trigger 2 2 2 6 3 17 G 9 AC Line Voltage...

Страница 247: ...knob 3 116 Vertical Readout 3 116 Vertical SCALE knob 3 116 W WARNING statement in manual vii Warranted Characteristics Defined A 17 Performance Conditions for A 17 Waveform G 9 Acquisition A 10 Inter...

Страница 248: ...Index Index I 10...

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