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Tektronix TDS544A User's Manual

1. p Disconnect all test equipment TSG121 from the digitizing oscillo scope 5 Check 60 Hz Rejection a Setup oscilloscope for 60 Hz Rejection Test m Use the keypad to set the Ch1 Fine Scale to 282 mV press 282 SHIFT m then ENTER m Press WAVEFORM OFF m Press CH2 m Press VERTICAL MENU m Use the keypad set the fine scale to 2 V press 2 then ENTER m Press HORIZONTAL MENU m Use the keypad to set the horizontal scale time per division Horiz Scale div to 5 ms press 5 SHIFT m then ENTER b Setup 60 Hz signal generator SG 502 m Connect the output of the SG 502 to the CH2 input through a 50 Q cable See Figure 1 32 1 66 Performance Verification Procedures Performance Tests Signal Generator SG 502 oooO 00000 gg 0 0 0 0 0 0 0 Oooo ft 500 Cable Figure 1 32 60 Hz Rejection Test Hookup Adjust the SG 502 for three vertical divisions of 60 Hz signal See Figure 1 33 The signal will not be triggered That is it will run free Run 10 0kS 5 Sample Main Scale 5ms Horizontal Scale Main Scale 50 Pts Div Sms Delayed Scale 50 Pts Div 200ns 2 00V M5 00ms vid Ch1 147 Time Base Mager or i FastFrame Main Position 50 Figure 1 33 60 Hz Rejection Test Setup Signal c Check 60 Hz rejection m Use the keypad to set the the horizontal
2. Rackmount conversion kit 2 3 kg 5 lbs parts only 3 6 kg 8 lbs parts plus package for domestic shipping Overall Dimensions Standard Digitizing Oscilloscope Height 193 mm 7 6 in with the feet installed Width 445 mm 17 5 in with handle Depth 434 mm 17 1 in with front cover installed Rackmount Digitizing Oscilloscope Height 178 mm 7 0 in Width 483 mm 19 0 in Depth 558 8 mm 22 0 in TDS 520A 524A 540A amp 544A Performance Verification 2 13 Nominal Traits 2 14 Specifications Performance Conditions Warranted Characteristics This subsection lists the electrical and environmental warranted characteristics that describe the TDS 520A 524A 540A and 544A Digitizing Oscilloscopes Warranted characteristics are described in terms of quantifiable performance limits which are warranted NOTE In these tables those warranted characteristics that are checked in the procedure Performance Verification found in Section 1 appear in boldface type under the column Name As stated above this subsection lists only warranted characteristics A list of typical characteristics starts on page 2 21 The electrical characteristics found in these tables of warranted characteris tics apply when the scope has been adjusted at an ambient temperature between 20 C and 30 C has had a warm up period of at least 20 min utes and is operating at an ambient temperature between 4 C and 50 C unless other
3. The minimum pulse width and rearm width required for logic type triggering or events delaying to occur gt 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 See the characteristic Sensitivity Edge Type Trigger DC Coupled in Table 2 10 which begins on page 2 17 O ua The minimum signal levels required for stable logic or pulse triggering of an acquisition or for stable counting of a DC coupled events delay signal Also see the footnote for Sensitivity Edge Type Trigger DC Coupled in this table Stable counting of events is counting that misses no events Table 2 16 Typical Characteristics Data Handling Name Description Time Data Retention Nonvolatile Battery life is 5 years Memory1 2 Floppy disk 3 5 inch 720 K or 1 44 Mbyte DOS 3 3 or later compatible Standard on TDS 540A 544A Option 1F on TDS 520A 524A The time that reference waveforms stored setups and calibration constants are retained when there is no power to the oscillo scope N Data is maintained by small lithium thionyl chloride batteries intern
4. Set Level to 50 Function Sensitivity Edge Trigger Not DC Coupled4 Sensitivities Logic Type Trigger Events Delay DC Coupled Any Channel l Offset 0 3 div x volts div setting Offset Accuracy Auxiliary a TDS 540A amp 544A only mV The input resistance is 1 5 KQ the maximum safe input voltage is AC Acquire Mode Sample Hi Res Average a Trigger Position Marker1 gt 2 WI 1 ns Peak Detect Envelope ns Minimum For any horizontal scale setting the minimum holdoff is 10 times that setting but is never less than 1 us or longer than 5 s Maximum For any horizontal scale setting the maximum holdoff is at least 2 times the minimum holdoff for that setting but is never more than 10 times the minimum holdoff for that setting 5ns 30 Hz Trigger Coupling Typical Signal Level for Stable Triggering AC Same as DC coupled limits for frequen cies above 60 Hz Attenuates signals be low 60 Hz Noise Reject Three ane one half times the DC coupled limits One and one half times the DC coupled limits gt from DC to 30 kHz Attenuates sig nals above 30 kHz One and one half times the DC coupled limitsS for frequencies above 80 kHz At tenuates signals below 80 kHz High Frequency Reject Low Frequency Reject 1 0 division from DC to 100 MHz with a minimum slew rate of 25 divisions us at the trigger level or the threshold cross
5. Minimum Requirements Ratio 10X impedance 50 Q connectors female BNC input male BNC output Ratio 5X impedance 50 Q connectors female BNC input male BNC output Impedance 50 Q connectors female BNC input male BNC output 50 Q 36 inch male to male BNC connectors Female BNC to dual banana Male BNC to dual female BNC Female BNC to dual male BNC Variable amplitude to 10 V accuracy to 0 1 500 mV square wave calibra tor amplitude accuracy to 0 25 200 kHz to 250 MHz Variable amplitude from 5 mV to 5 5 Vp p into 50 Q 250 MHz to 500 MHz Variable amplitude from 500 mV to 4 Vp p into 50 Q 6 MHz reference Variable marker frequency from 10 ms to 10 ns accuracy within 2 ppm 500 mV square wave calibra tor amplitude accuracy to 0 25 Example Tektronix part number 011 0059 02 Tektronix part number 011 0060 02 Tektronix part number 011 0049 01 Tektronix part number 012 0482 00 Tektronix part number 103 0090 00 Tektronix part number 103 0030 00 Tektronix part number 067 0525 02 Data Precision 8200 with 1 kV option installed PG 506A Tektronix SG 503 Leveled Sine Wave Generator Tektronix SG 504 Leveled Sine Wave Generator with its Level ing Head Tektronix TG 501 Time Mark Generator PG 506A 1 Requires a TM 500 or TM 5000 Series Power Module Mainframe Purpose Signal Attenuation Signal Attenuation Signal Termina
6. Now press the side menu button Normal Press VERTICAL MENU then press the main menu button Coupling Now press the side menu Q button and select the 50 Q setting Press SHIFT then press ACQUIRE MENU Now press the main menu button Mode then the side menu Average 16 button Performance Verification Procedures Performance Tests c Hook up the test signal source 00 Onto 00 Medium Frequency Sine Wave Generator 00000 gg 0 0 0 0 0 0 0 0 10C 00 00 oooO T Output 500 Coaxial Cables Figure 1 18 Initial Test Hookup TDS 520A or 524A Only m TDS 520A 524A only Connect through a 50 Q precision coaxial cable the signal output of a medium frequency sine wave gener ator to CH 1 See Figure 1 18 To AUX TRIG INPUT on Rear Panel J Medium Frequency Sine Wave Generator 00 0 Ono 00 0000000 00000 00000 00000 0O0000 Output 30 OR 500 Coaxial Cables Figure 1 19 Initial Test Hookup TDS 540A or 544A Only m TDS 540A or 544A only Connect the signal output of a medium frequency sine wave generator to a BNC T connector Connect one output of the T connector to CH 1 through a 50 Q precision coaxial cable connect the other output of the T connector to the AUX TRIG INPUT at the rear panel See Figure 1 19 2 Confirm Main and Delayed trigger systems are within sensitivit
7. Press the side menu button OK Confirm Factory Init c Select Delayed Triggerable Press HORIZONTAL MENU Press the main menu button Time Base Press the side menu button Delayed Triggerable 2 Confirm Main trigger system is within limits for Trigger level Threshold accuracy a Display the test signal Press VERTICAL MENU Press the main menu button Position Use the keypad to set vertical position to 3 divisions press 3 then ENTER on the keypad The baseline level will move down three divisions Press the main menu button Offset Use the keypad to set vertical offset to 10 volts Press 10 then ENTER The baseline level will move off screen Set the standard output of a DC calibration generator to 10 volts The DC test level will appear on screen b Measure the test signal Press SET LEVEL TO 50 Press TRIGGER MENU Read the measurement results from the readout below the label Level in the menu not the trigger readout in the graticule area c Check against limits 1 46 CHECK that the Level readout in the main menu is within 9 940 V to 10 060 V inclusive Press TRIGGER MENU Press the main menu button Slope then press the side menu button for negative slope See icon at left Repeat substep b CHECK that the Level readout in the main menu is within 9 940 V to 10 060 V inclusive See Figure 1 17 Performance Verification Procedures First set vertical offset to maximum and vertica
8. and a dual input coupler Item 7 Prerequisites See page 1 15 Procedure DO NOT use the vertical position knob to reposition any channel while doing this check To do so invalidates the test 1 Install the test hookup and preset the instrument controls a Initialize the front panel Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init b Modify the initialized front panel control settings Do not adjust the vertical position of any channel during this procedure Set the horizontal SCALE to 500 ps m Press SHIFT then ACQUIRE MENU m Press the main menu button Mode and then press the side me nu button Average 16 c Hook up the test signal source m Connect through a 50 Q precision coaxial cable followed by a 50 Q termination the sine wave output of a medium frequency sine wave generator to a dual input coupler See Figure 1 10 Medium Frequency Sine Wave Generator oooO Output 500 Terminator Dual Input Coupler Figure 1 10 Initial Test Hookup Performance Verification Procedures Performance Tests m Connect the coupler to both CH 1 and CH 2 2 Confirm CH 1 through CH 4 CH 2 for 520A and 524A are within limits for channel delay a Setup the generator Set the generator frequency to 250 MHz and the amplitude for about five divisions in CH 1 Hint as you are adjusting the gen
9. gain GUI The user interface also makes use of a GUI or Graphical User Interface to make setting functions and interpreting the display more intuitive Some menus and status are displayed using iconic representations of function settings such as those shown here for full 100 MHz and 20 MHz bandwidth Such icons allow you to more readily determine status or the available set tings TDS 540A and 544A The signal acquisition system provides four vertical channels with calibrated vertical scale factors from 1 mV to 10 V per division All four channels can be acquired simultaneously Each of the four TDS 540A and 544A channels can be displayed vertically positioned and offset can have their bandwidth limited 100 MHz or 20 MHz and their vertical coupling specified Fine gain can also be adjusted TDS 520A and 524A The signal acquisition system provides four vertical channels Two are full featured vertical channels CH1 and CH2 with cali brated vertical scale factors from 1 mV to 10 V per division The other two are auxiliary channels AUX1 and AUX2 with three calibrated deflection factors of 100 mV 1 V and 10 V per division Any two of the four channels can be acquired simultaneously Each of the four TDS 520A and 524A channels can be displayed vertically positioned and offset CH1 and CH2 can also have their bandwidth limited 100 MHz or 20 MHz and their vertical coupling specified Fine gain can also be adjusted for CH1 and
10. m Press the main menu button Mode then press the side menu button Average 16 Press TRIGGER MENU m Press the main menu button Coupling then press the side menu button Noise Rej Press Measure Now press the main menu button High Low Setup then press the side menu button Min Max c Hook up the test signal source Connect through its leveling head the sine wave output of a high frequency leveled sine wave generator to CH 1 Set the output of the generator to a reference frequency of 6 MHz See Figure 1 8 High Frequency Sine Wave Generator Output Leveling Head Figure 1 8 Initial Test Hookup 1 32 Performance Verification Procedures Vertical Scale 100 mV 1V 500 mV 200 mV 50 mV 20 mV 10 mV 5 mV 2mV Attenuators 10X none none none none 1 1 1 Performance Tests 2 Confirm the input channels are within limits for analog bandwidth Do the following substeps test CH 1 first skipping substeps a and b since CH 1 is already set up for testing from step 1 Select an unchecked channel m Press WAVEFORM OFF to remove the channel just confirmed from display m Press the front panel button that corresponds to the channel you are to confirm m Move the leveling head to the channel you select Match the trigger source to the channel selected m Press TRIGGER MENU m Press the main menu button Source m Press the side menu button that corresponds to
11. Adapters DC Calibrator Output Sense fon Kan en an an Qu CL 500 Coaxial Cables BNC T Connector Figure 1 5 Initial Test Hookup a Hook up the test signal source Set the output of a DC calibration generator to 0 volts Connect the output of a DC calibration generator through a dual banana connector followed by a 50 Q precision coaxial cable to one side of a BNC T connector Connect the Sense output of the generator through a second dual banana connector followed by a 50 Q precision coaxial cable to the other side of the BNC T connector Now connect the BNC T connector to CH 1 b Initialize the oscilloscope Press save recall SETUP Press the main menu button Recall Factory Setup Press the side menu button OK Confirm Factory Init c Modify the default settings Press SHIFT then ACQUIRE MENU Press the main menu button Mode then press the side menu button Average 16 Press CURSOR Press the main menu button Function then press the side menu button H Bars Press DISPLAY Performance Verification Procedures Performance Tests m Press the main menu button Graticule then press the side menu button Frame 2 Confirm input channels are within limits for DC delta voltage accuracy Do the following substeps test CH 1 first skipping substep a since CH 1 is already selected from step 1 a Select an unchecked channel Set the generator ou
12. CH2 On all TDS 520A 524A 540A and 544A Besides the four channels up to three math waveforms and four reference waveforms are available for display A math waveform results when dual waveform operations such as add are specified on any two channels A reference waveform results when you save a live waveform in a reference memory TDS 520A 524A 540A amp 544A Performance Verification 2 3 Specifications Horizontal System There are three horizontal display modes main only main intensified and delayed only You can select among various horizontal record length settings A feature called Fit to Screen allows the user to view entire waveform records within the 10 division screen area In other words waveforms are compressed to fit on the screen The exception is that with Option 1M 50 000 point records are displayed over a 15 division time span see Table 2 1 Table 2 1 Record Length vs Divisions per Record Samples Per Division and Sec Div Sequence Divisions per Records Record Length Samples Division Sec Div Sequence Fit to Screen OFF Fit to Screen ON 50 1 2 5 50 1 2 5 50000 1000 divisions 10 divisions 150002 300 divisions 15 divisions 5000 100 divisions 10 divisions 2500 50 divisions 10 divisions 1000 20 divisions 10 divisions 500 10 divisions 10 divisions 1 The 50 000 samples in 1 000 division record is only available with Option 1M 2 The maximum record length of 15 000 samples 50 00
13. PERIOD to 10 us Set OUTPUT VOLTS to 1 for LOW LEVEL and 1 for HIGH LEVEL Depress the COMPLEMENT button Be sure BACK TERM is depressed in Performance Verification Procedures Performance Tests c Check Sync Duty Cycle m Connect the pulse generator PG502 through a 50 Q cable and a 50 Q terminator to the oscilloscope CH1 input See Figure 1 39 Pulse Generator PG502 O0OOCQ 50 Q Cable 502 Terminator Figure 1 39 PG502 Setup for Sync Duty Cycle Test Turn the pulse generator OUTPUT VOLTS control until the signal on the oscilloscope shows a one division negative going pulse See Figure 1 40 NOTE You may need to adjust the trigger level control to obtain a stable trigger TDS 520A 524A 540A amp 544A Performance Verification 1 73 Performance Tests Run 250MS s Sample Select Measurement chi Width 196 8ns Low signal amplitude Ch1 Period s No period Frequency found width SEES Negative width lot Remove Gating Migh Low Reference Measrmnt Setup Snapshot i OFF _ aistogram levels al Sesesce 282mMY M 200ns Ch1 JF 152mMY more amp Figure 1 40 Sync Duty Cycle Test One Div Neg Pulse Waveform Turn the pulse generator PULSE DURATION variable control to adjust the negative pulse so the oscilloscope CH1 Width mea
14. Press CLEAR MENU Follow these rules to match this procedure to the model of the oscillo scope under test Models TDS 540A 544A Only Use Table 1 3 to test CH 1 CH 4 ignore Table 1 4 AUX 1 amp AUX 2 settings and limits Model TDS 520A 524A Only Use Table 1 3 to test CH 1 and CH 2 only use Table 1 4 to test AUX 1 and AUX 2 only c Set its vertical scale Set the vertical SCALE to one of the settings listed in Table 1 3 and Table 1 4 for the TDS 520A and 524A that is not yet checked Start with the first setting listed Table 1 3 DC Accuracy CH 1 CH 4 Scale Position Offset Generator Accuracy Setting Setting Setting Setting Limits Divs 5 mV 5 1 V 1 040 V 1 0355 V to 1 0445 V 5 1 V 1 040 V 1 0355 V to 1 0445 V 200 mV 5 10 V 11 6 V 11 525 V to 11 675 V 5 10 V 11 6 V 11 525 V to 11 675 V 1V 5 100 V 108 V 107 450 V to 108 550 V 5 100 V 108 V 107 450 V to 108 550 V TDS 520A 524A 540A amp 544A Performance Verification 1 29 Performance Tests Table 1 4 DC Accuracy AUX 1 AUX 2 Scale Positio Offset Generator Accuracy Setting n Setting Setting Limits Setting Divs 100 mV 5 0 5 V 1 8 V 1 271 V to 1 329 V 5 0 5 V 1 3 V 1 271 V to 1 329 V 1V 5 5 V 13 V 12 710 V to 13 290 V 5 5 V 13 V 12 710 V to 13 290 V 10 V 5 50 V 130 V 127 10 V to 132 90 V 5 50 V 130 V 127 10 V to 132 90 V d Display the test signal m
15. Specifications User Interface Specialized display modes such as variable persistence with color coding on the TDS 524A and 544A dot or vector mode sin x x or linear display filters and on the TDS 524A and 544A user selectable color palettes The Fit to Screen feature compresses the entire waveform record to fit on the screen A complement of advanced acquisition modes such as peak detect high resolution sample envelope and average The FastFrameTM feature acquires waveforms in rapid succession with a minimum of dead time between acquisitions FastFrame allows acquisition rates of up to 50 000 frames per second A unique graphical user interface GUI an on board help mode and a logical front panel layout which combine to deliver a new standard in usability VGA output for driving remote monitors m A 1 44 Mbyte DOS 3 3 or later floppy disk drive for saving waveforms color images and oscilloscope setups standard on the TDS 524A and 544A and optional as option 1F on the TDS 520A and 540A Also all TDS 500A have built in NVRAM storage for saving waveforms and set ups m On the 524A and 544A a color display for distinguishing among wave forms their measurements and associated text Use a combination of front panel buttons knobs and on screen menus to control the many functions of these oscilloscopes The front panel controls are grouped according to function vertical horizontal trigger and
16. and 524A Four channel acquisition the TDS 540A and 544A offer four full fea tured channels the TDS 520A and 524A offer two full featured channels and two channels with limited vertical scale selections 100 mV 1 V and 10 V Extensive triggering capabilities such as edge logic and glitch Video trigger Option 05 is also available The video trigger modes are NTSC PAL SECAM HDTV and FlexFormat user definable format Waveform Math Invert a single waveform and add subtract and multiply two waveforms On the TDS 524A 544A and other TDS 500A equipped with option 2F integrate or differentiate a single waveform or perform an FFT fast fourier transform on a waveform to display its magnitude or phase versus its frequency Eight bit digitizers Up to 15 000 point record length per channel 50 000 point with option 1M Full GPIB software programmability Hardcopy output using GPIB RS 232 or Centronics ports RS 232 and Centronics is standard on the TDS 524A and 544A and optional as option 13 on the TDS 520A and 540A Complete measurement and documentation capability Intuitive graphic icon operation blended with the familiarity of traditional horizontal and vertical knobs On line help at the touch of a button A full complement of advanced functions like continuously updated measurements results and local pass fail decision making TDS 520A 524A 540A amp 544A Performance Verification 2 1
17. from CH1 wait a few seconds then reconnect the signal CONFIRM that the TRIG D LED is on and the waveform is stable Press Sync Polarity Press Pos Sync Push the pulse generator COMPLEMENT button out CONFIRM that the TRIG D LED is on and the waveform is stable Disconnect the signal source from CH1 wait a few seconds then reconnect the signal CONFIRM that the TRIG D LED is on and the waveform is stable TDS 520A 524A 540A amp 544A Performance Verification 1 75 Performance Tests m Disconnect all test equipment TSG 121 from the oscilloscope m Press save recall SETUP press the main menu button Recall Factory Setup and the side menu OK Confirm Factory Init 1 76 Performance Verification Procedures Specifications Specifications This subsection begins with a general description of the traits of the TDS 520A 524A 540A and 544A Digitizing Oscilloscopes Three subsections follow one for each of three classes of traits nominal traits warranted char acteristics and typical characteristics General Product The Tektronix TDS 520A 524A 540A and 544A Digitizing Oscilloscopes are Description portable four channel instruments suitable for use in a variety of test and measurement applications and systems Key features include 500 MHz maximum analog bandwidth 1 Gigasample second maximum digitizing rate TDS 540A and 544A 500 Megasamples second maximum digitizing rate TDS 520A
18. is between 45 mV and 55 mV inclusive 4 Disconnect the hookup Disconnect the cable from the generator output at the input connector of the channel last tested Check Probe Compensator Outputs One female BNC to clip adapter Item 15 two dual banana connectors Item 5 one BNC T connector Item 6 two 50 Q precision cables Item 4 and one DC calibration generator Item 8 Prerequisites See page 1 15 Also this Digitizing Oscilloscope must have passed Check Accuracy Long Term Sample Rate Delay time Time Mea surement on page 1 39 and Check Accuracy for DC Gain and Voltage Mea surements on page 1 25 Procedure 1 Install the test hookup and preset the instrument controls a Hook up test signal Connect CH 1 to PROBE COMPENSATION SIGNAL and to PROBE COMPENSATION GND through a precision coaxial cable and a BNC to clip adapter See Figure 1 23 Co Cc oo cS aS So gt o o o 3 Sa ees Black Lead ma 500 Coaxial Cable Female BNC to Clip Adapter Figure 1 23 Initial Test Hookup b Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup TDS 520A 524A 540A amp 544A Performance Verification 1 57 Performance Tests m Press the side menu button OK Confirm Factory Init c Modify the initialized front panel control settings Set the vertical SCALE to 100 mV as required Set the horizonta
19. m then ENTER Performance Verification Procedures Positive pulse Negative pulses Performance Tests m CONFIRM that the TRIG D LED stays on and that the waveform on screen is stable ie does not move horizontally or vertically Also CONFIRM that the waveform on the screen has one positive pulse and a number of negative pulses See Figure 1 30 Tek Run 1 00MS s Sample Fine Scale 300mvV chi Fine Scale E Fine Scale J at eleloo Zoomy MSbous Vidhi 1 7 D ine ea e i ON 300mv Position div Figure 1 30 Triggered Signal Range Test 300 mV Coupling Bandwidth Cal Probe DC 100 MHZ initialized Offset ov n Use the keypad to set the fine scale to 75 mV press 75 SHIFT m then ENTER o CONFIRM that the TRIG D LED stays lit and that the waveform on screen is stable ie does not move horizontally or vertically Also CONFIRM that the waveform on the screen has one positive pulse and a number of negative pulses See Figure 1 31 TDS 520A 524A 540A amp 544A Performance Verification 1 65 Performance Tests Tek Run 1 00MS s Sample Fine Scale 75 0m V chi Fine Scale 75 0mV Positive pulse Negative pulses S vid Ch1 14 Coupling Bandwidth EE position offset Cal Probe DC 100 mHz SPAS div au initialized n Figure 1 31 Triggered Signal Range Test 75 mV
20. of procedures that can be used to verify oscilloscope performance includes the Performance Tests found later in this section You may not need to perform all of these procedures depending on what you want to accomplish m To rapidly confirm that this oscilloscope functions and was adjusted properly just do the procedures under Self Tests which begin on page 1 4 Advantages These procedures are quick to do require no external equipment or signal sources and perform extensive functional and accu racy testing to provide high confidence that the oscilloscope will perform properly They can be used as a quick check before making a series of important measurements To further check functionality first do the Self Tests just mentioned then do the procedures under Functional Tests that begin on page 1 6 Advantages These procedures require minimal additional time to per form require no additional equipment other than a standard accessory probe and more completely test the internal hardware of this oscillo scope They can be used to quickly determine if the oscilloscope is suitable for putting into service such as when it is first received m f more extensive confirmation of performance is desired do the Perform ance Tests beginning on page 1 15 after doing the Functional and Self Tests just referenced Advantages These procedures add direct checking of warranted specifi cations They require more time to perform and suitabl
21. scale time per division Horiz Scale div to 50 us press 50 SHIFT p then ENTER Reconnect the output of the signal generator SG 502 Connect the PAL signal source s composite signal connector labelled COMPST on the TSG 121 to a 75 Q cable and a 75 Q termina tor Connect both signals to the CH1 input through a BNC T See Figure 1 34 TDS 520A 524A 540A amp 544A Performance Verification 1 67 Performance Tests m Press VERTICAL MENU m f needed press the main menu Fine Scale m Use the keypad to set fine scale to 500 mV press 500 SHIFT m then ENTER Connect another the PAL signal source s composite signal con nector labelled COMPST on the TSG 121 through a 75 Q cable and a 75 Q terminator to the CH2 input See Figure 1 34 00 00 0 Signal PAL Signal Generator Source SG 502 TSG121 0 1010000 Oooo 00000 gg 75 Q Cable 750 Cable 50 Q Cable 75Q BNCT 75Q Terminator Connector Terminator Figure 1 34 Subsequent 60 Hz Rejection Test Hookup CONFIRM that the TRIG D LED stays on and that the waveform on screen is stable Stable means the waveform does not move horizontally or vertically Also confirm that the waveform on the screen has one positive pulse and a number of negative pulses See Figure 1 35 1 68 Performance Verification Procedures Performance Tests Run 1 00MS s Sample Fine Scale 500mvV coupling B
22. sensitive of the pair For example between 50 mV div and 100 mV div the volts division can be set with 0 5 mV resolution TDS 520A 524A 540A amp 544A Performance Verification 2 9 Nominal Traits Table 2 3 Nominal Traits Time Base System Name Description Range Sample Rate1 3 Number of Sample Rate TDS 540A 544A Channels On Range 1 5 Samples s 1 GSamples s 2 5 Samples s 500 MSamples s 3 or 4 5 Samples s 250 MSamples s Range Sample Rate1 3 Number of Sample Rate TDS 520A 524A Channels On Range 1 5 Samples s 500 MSamples s 2 5 Samples s 250 MSamples s Range Equivalent Time or Interpolated Waveform Rate2 3 Range Seconds Division Record Length4 FastFramelM 500 MSamples s to 100 GSamples s 500 ps div to 10 s div 500 samples 1000 samples 2500 samples 5000 samples 15000 samples A record length of 50000 samples is available with Option 1M Up to four 50 K waveform records may be saved in NVRAM with Option 1M installed Maximum Frame Rate 50 000 Frames Second Frame Length Range 50 points Frame to 5 000 Points Frame Maximum Number of Frames 910 Frames at 50 Points Frame with Option 1M 50 000 Record Length 227 Frames at 50 Points Frame standard configuration of 15 000 Record Length 1 The range 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 sample
23. signal in reference 1 Disconnect the cable from CH 1 and the clips from the probe compensation terminals m Press MORE then press the main menu button Ref 1 to dis played the stored signal m Press CH 1 b Hook up the DC standard source Set the output of a DC calibration generator to 0 volts Connect the output of a DC calibration generator through a dual banana connector followed by a 50 Q precision coaxial cable to one side of a BNC T connector See Figure 1 25 Connect the Sense output of the generator through a second dual banana connector followed by a 50 Q precision coaxial cable to the other side of the BNC T connector Now connect the BNC T connector to CH 1 See Figure 1 25 0 o o o os DC Calibrator is sss D00 000 Output Sense gt 000 AH e O O o 200 6 ee e 2 9 fF Lo 7 OO Dual Banana to BNC Adapters 500 Coaxial Cables BNC T Connector Figure 1 25 Subsequent Test Hookup c Measure amplitude of the probe compensation signal Press SHIFT then ACQUIRE MENU Then use the keypad to set AVERAGE to 16 in the side menu TDS 520A 524A 540A amp 544A Performance Verification 1 59 Performance Tests Adjust the output of DC calibration generator until it precisely overlaps the top upper level of the stored probe compensation signal This value will be near 500 mV Record the setting of the DC generator Adjust the out
24. special Set a function you adjust often such as vertical positioning or the time base setting directly by its own front panel knob Set functions which you change less often such as vertical coupling and horizontal mode indirectly using selected menus Menus Pressing one Sometimes two front panel button s such as vertical menu displays a main menu of related functions such as coupling bandwidth etc at the bottom of the screen Pressing a main menu button such as coupling displays a side menu of settings for that function such as AC DC or GND ground coupling at the right side of the screen Pressing a side menu button selects a setting such as DC Indicators On screen readouts help you keep track of the settings for various functions such as vertical and horizontal scale and trigger level Some readouts use the cursors or the automatic parameter extraction feature called measure to display the results of measurements made or the status of the instrument Specifications Signal Acquisition System Specifications General Purpose Knob Assign the general purpose knob to adjust a selected parameter function More quickly change parameters by toggling the SHIFT button Use the same method as for selecting a function except the final side menu selection assigns the general purpose knob to adjust some function such as the posi tion of measurement cursors on screen or the setting for a channels fine
25. the oscilloscope successfully makes 100 acquisitions If not successful the oscilloscope bell will ring When the word Run in the top left corner of the display changes to STOP the test is com plete See Figure 1 29 TDS 520A 524A 540A amp 544A Performance Verification 1 63 Performance Tests 1 64 STOP shows the gt _ SE Sir jle A 125MS s test is complete Stop After RUN STOP button only Single Acquisition Sequence Limit Test Condition Met eloelo 282mY By M AUS vid chi 147 Refl 282mV a are de epe a After Limit Test Limit Test reare C Limit Test Template Seeeece Figure 1 29 Jitter Test When Completed Envalane N a Seq Sources w Press the main menu Limit Test Setup X y Toggle the side menu Ring Bell if Condition Met to OFF Toggle the side menu Limit Test to OFF 4 Check Triggered Signal Range Setup oscilloscope for Triggered Signal Test a b C Press MORE Press WAVEFORM OFF Press HORIZONTAL MENU Use the keypad to set the horizontal scale time per division Horiz Scale div to 50 us press 50 SHIFT p then ENTER Press SHIFT then ACQUIRE MENU Press the main menu Stop After Press the side menu RUN STOP button only Press the main menu Mode Press the side menu Sample Press RUN STOP Press VERTICAL MENU Use the keypad to set fine scale to 300 mV press 300 SHIFT
26. those called out in the procedure you may obtain invalid results In this case just redo the procedure from step 1 When you are instructed to press a menu button the button may already be selected its label will be highlighted If this is the case it is not necessary to press the button Verify All Input Channels Equipment Required One P6139A probe Prerequisites None Procedure 1 Install the test hookup and preset the oscilloscope controls a ao o e O e 00000 gg Figure 1 3 Universal Test Hookup for Functional Tests Hook up the signal source Install the probe on CH 1 Connect the probe tip to PROBE COMPENSATION SIGNAL on the front panel connect the probe ground to PROBE COMPENSATION GND Performance Verification Procedures Brief Procedures b Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init 2 Verify that all input channels operate Do the following substeps test CH 1 first skipping substep a since CH 1 is already set up for verification from step 1 a Select an unverified channel Press WAVEFORM OFF to remove from display the channel just verified m Press the front panel button that corresponds to the channel you are to verify Move the probe to the channel you selected b Setup the selected channel m Press AUTOSE
27. 0 samples with Option 1M is select able with all acquisition modes except Hi Res In Hi Res the maximum record length is 5 000 samples 15 000 samples with Option 1M FastFrameTM allows multiple triggered acquisitions to occur with a minimum of dead time between acquisitions maximum of 910 acquisition se quences frames are possible with 50 points per record frame length when a 50 000 point waveform record length is available with option 1M You can delay by time with respect to the main trigger both the delayed display and the intensified zone on the main intensified display You can set them to display immediately after the delay delayed runs after main mode The delayed display can also be set to display at the first valid trigger after the delay delayed triggerable mode You can also delay by a selected number of events the delayed display or the intensified zone In this case the events source is the delayed trigger source For any events signal the delayed trigger system conditions the signal by determining the source coupling etc of that signal Specifications Trigger System Specifications The triggering system supports a varied set of features for triggering the signal acquisition system Trigger signals recognized include Edge main and delayed trigger systems This familiar type of triggering is fully configurable for source slope coupling mode auto or normal and holdoff Logic main
28. 544A Four all identical TDS 520A and 524A Two both identical 8 bits TDS 540A and 544A Four all identical called CH1 CH4 TDS 520A and 524A Two full featured CH1 and CH2 plus two limited auxiliary inputs AUX1 and AUX2 DC AC or GND 1 MQ or 50 Q Volts Div Setting Offset Range 1 mV div 99 5 mV div gl Vv 100 mV div 995 mV div gv 1 V div 10 V div a V Volts Div Setting Offset Range 100 mV div dev 1 V div gv 10 V div gv l divisions TDS 540A and 544A 1 mV div to 10 V div3 TDS 520A and 524A CH1 and CH2 1 mV div to 10 V div3 TDS 520A and 524A AUX1 and AUX2 100 mV div 1 V div 10 V div 1 Displayed vertically with 25 digitization levels DLs per division and 10 24 divisions dynamic range with zoom off A DL is the small est voltage level change that can be resolved by the 8 bit A D Converter with the input scaled to the volts division setting of the channel used Expressed as a voltage a DL is equal to 1 25 of a division times the volts division setting where otherwise specified The input characteristics Input Coupling Input Impedance Selections etc apply to both full featured and auxiliary inputs except The sensitivity ranges from 1 mV div to 10 V div in a 1 2 5 sequence of coarse settings Between a pair of adjacent coarse settings the sensitivity can be finely adjusted The resolution of such a fine adjustment is 1 of the more
29. 5mV 1V 250 mV 250 mV CH4 Offset 1 mV 1 6 mV 1 6 mV 100 mV 25 mV 25 mV 1 V 250 mV 250 mV DC Voltage Measurement Accuracy Averaged CH1 5 mV Vert scale setting 1 0355 V 1 0445 V 5 Div position setting CH1 5 mV Vert scale setting 1 0445 V 1 0355 V 5 Div position setting CH1 200 mV Vert scale setting 11 525 V 11 675 V 5 Div position setting CH1 200 mV Vert scale setting 11 675 V 11 525 V 5 Div position setting CH1 1 V Vert scale setting 107 450 V 108 550 V 5 Div position setting CH1 1 V Vert scale setting 108 550 V 107 450 V 5 Div position setting CH2 5 mV Vert scale setting 1 0355 V 1 0445 V 5 Div position setting CH2 5mvV Vert scale setting 1 0445 V 1 0355 V 5 Div position setting TDS 520A 524A 540A amp 544A Performance Verification 1 19 Performance Tests Instrument Serial Number Temperature Date of Calibration Performance Test CH2 200 mV Vert scale setting 5 Div position setting CH2 200 mV Vert scale setting 5 Div position setting CH2 1 V Vert scale setting 5 Div position setting CH2 1 V Vert scale setting 5 Div position setting CH3 5mvV Vert scale setting 5 Div position setting CH3 5mvV Vert scale setting 5 Div position setting CH3 200 mV Vert scale setting 5 Div position setting CH3 200 mV Vert scale setting 5 Div position setting CH3 1 V Vert scale setting 5 Div positi
30. EL TO 50 as necessary to trigger a stable display f Measure the test signal First increase the reference frequency to the test frequency then decrease the horizontal scale Second read the results from the readout of measurement Pk Pk Increase the frequency of the generator output to the test fre quency in Table 1 5 that corresponds to the vertical scale set in substep d Set the horizontal SCALE to 1 ns Press SET LEVEL TO 50 as necessary Read the results at the CHx Pk Pk readout which will automati cally measure the amplitude of the test signal See Figure 1 9 Run 2 00G5 5 Average G chi Pk Pk 442mv 1 Freq 5 1 26MHz i oons G F 0 18 Feb 1993 14 24 26 TT toomve SEE Figure 1 9 Measurement of Analog Bandwidth 1 34 Performance Verification Procedures Performance Tests g Check against limits CHECK that the Pk Pk readout on screen is within the limits listed in Table 1 5 for the current vertical scale setting When finished checking set the horizontal SCALE back to the 50 ns setting Checking each channel s bandwidth at all vertical scale settings is TOP time consuming and unnecessary You may skip checking the remain ing vertical scale settings in Table 1 5 that is skip the following substep h if this digitizing oscilloscope has performed as follows m Passed the 100 mV vertical scale setting just checked in th
31. Limit 2 0ns Pulse width Trig When ru i within Limits Out of Limits Upper Limit TOONS Lower Limit SSSS ri M 10 0ns width chi CO Source Polarity gen when S e iles lt Width gt HT ETS Holdoff SRE Figure 1 15 Measurement of Time Accuracy for Pulse and Glitch Triggering 3 Confirm the trigger system is within time accuracy limits for pulse glitch or pulse width triggering horizontal scale gt 1 us a Set upper and lower limits that ensure triggering at 250 kHz Press the side menu button Upper Limit Use the keyboard to set the upper limit to 4 us Press the side menu button Lower Limit Use the keypad to set the lower limit to 500 ns b Display the test signal Set the horizontal SCALE to 5 us Set the output of the sine wave generator for a 250 kHz five divi sion sine wave on screen Set the vertical SCALE to 20 mV the waveform will overdrive the display Press SET LEVEL TO 50 c Check against limits Do the following subparts in the order listed Use the general purpose knob to increase Lower Limit readout until triggering is lost CHECK that the Lower Limit readout is within 1 us to 3 us inclusive Use the keypad to return the Lower Limit to 500 ns and reestab lish triggering Performance Verification Procedures Performance Tests m Press the side menu button Upper Limit then use the general purpose knob to slowl
32. OBE COMPENSATION SIGNAL on the front panel connect the probe ground to PROBE COMPENSATION GND See Figure 1 3 on page 1 6 Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init Modify default settings m Press AUTOSET to obtain a viewable triggered display Set the horizontal SCALE for the M main time base to 200 us Press TRIGGER MENU m Press the main menu button Mode amp Holdoff m Press the side menu button Normal m Press CLEAR MENU to remove the menus from the screen 2 Verify that the main trigger system operates Confirm that the following statements are true m The trigger level readout for the main trigger system changes with the trigger LEVEL knob The trigger level knob can trigger and untrigger the square wave signal as you rotate it Leave the signal untriggered m Pressing SET LEVEL TO 50 triggers the signal that you just left untriggered Leave the signal triggered 3 Verify that the delayed trigger system operates a Select the delayed time base Press HORIZONTAL MENU m Press the main menu button Time Base m Press the side menu button Delayed Triggerable then press the side menu button Delayed Only Set the horizontal SCALE for the D delayed time base to 200 us Performance Verification Procedures Brief Procedures b Select the delayed trigger level men
33. Performance Verification Tektronix x TDS 520A 524A 540A amp 544A Digitizing Oscilloscopes 070 8712 01 Please check for change information at the rear of this manual First Printing July 1993 Instrument Serial Numbers Each instrument manufactured by Tektronix has a serial number on a panel insert or tag or stamped on the chassis The first letter in the serial number designates the country of manufacture The last five digits of the serial number are assigned sequentially and are unique to each instrument Those manufactured in the United States have six unique digits The country of manufacture is identified as follows B010000 Tektronix 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 by external vendors outside the United States are assigned a two digit alpha code to identify the country of manufacture e g JP for Japan HK for Hong Kong IL for Israel etc Tektronix Inc P O Box 500 Beaverton OR 97077 Printed in U S A Copyright Tektronix Inc 1993 All rights reserved Tektronix products are covered by U S and foreign patents issued and pending The following are registered trademarks TEKTRONIX TEK TEKPROBE and SCOPE MOBILE WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a peri
34. Press VERTICAL MENU Press the main menu button Position m Use the keypad to set vertical position to 5 divisions press 5 then ENTER on the keypad The baseline level will move off screen m Press the main menu button Offset m Use the keypad to set vertical offset to the positive polarity set ting listed in the table for the current vertical scale setting The baseline level will remain off screen m Set the generator to the level and polarity indicated in the table for the vertical scale position and offset settings you have made The DC test level should appear on screen If it doesn t return the DC accuracy check is failed for the current vertical scale setting of the current channel e Measure the test signal Press CLEAR MENU Read the measure ment results at the Mean measurement readout See Figure 1 7 1 30 Performance Verification Procedures Performance Tests Run 100kS 5 Average First set vertical and position offsets to maximum no input Note gnd ref indicator bounded on screen for the offset baseline below screen Chi Mean 1 03984 V Second input a DC level equal to the offset plus 3 divisions Third turn on the Measurement called mean and read the results here n idom a 0ps Chi F 68m 17 Feb 1993 12 44 17 Figure 1 7 Measurement of DC Accuracy at Maximum Offset and Position f Check against limits m CHECK that the readout for th
35. Procedures HiRes mode displays an actively acquiring waveform on screen with the noise that was present in Sample mode reduced Envelope mode displays an actively acquiring waveform on screen with the noise displayed m Average mode displays an actively acquiring waveform on screen with the noise reduced like in Hi Res mode TDS 520A and 524A only Substep e will have you repeat the pre vious substeps to check all input channels Be sure to check only CH 1 and CH 2 when testing the TDS 520A or 524A Step 3 will test the AUX 1 and AUX 2 inputs When testing the TDS 540A or 544A test all four channels CH 1 through CH 4 Test all channels Repeat substeps a through d until all four input channels are verified 3 TDS 520A and 524A Only Verify auxiliary inputs operate Perform the following substeps when checking the AUX 1 and AUX 2 inputs only a Select an auxiliary channel Press WAVEFORM OFF to remove from display the channel just verified Press the front panel button that corresponds to the channel you are to verify Move probe to the channel you selected Set up the selected channel Press AUTOSET to obtain a viewable display in the selected channel The display obtained might not trigger stably because autoset cannot provide more than about signal amplitude in an auxiliary channel equipped with a 10X probe This amount is less than the minimum trigger sensitivity for
36. Signal Acquisition System 2 3 Horizontal System 2 4 Trigger SyStem 25 eile te ME Sen En Gran 2 5 Acquisition Control wicca ne m re ees 2 6 On Board User Assistance 2 6 Help ssa stake eaves lee daw dee tested 2 6 AUTOSOL SR E gat E Paras aca acter Maree net auth 2 6 Measurement Assistance 2 6 CUES Ole arate Mn en entr 2 6 Measure lt td Tee at int er ds 2 7 Digital Signal Processing DSP 2 7 Storage and VO 2 7 D LT E L ART tee el ee AKERI 2 8 LOOM here i Pate ee Be EEE Rea pane es ata 2 8 Nominal Trails 2 coice se scsi tats ie i eae sat eee teh tete Ss gee ts 2 9 Warranted Characteristics 2 15 Typical Characteristics 2 21 Contents Symbols and Terms Safety Summary Please take a moment to review these safety precautions They are provided for your protection and to prevent damage to the digitizing oscilloscope This safety information applies to all operators and service personnel These two terms appear in manuals statements identify conditions or practices that could result in damage to the equipment or other property statements identify conditions or practices that could result in personal injury or loss of life These two terms appea
37. T to obtain a viewable triggered display in the selected channel Set the horizontal SCALE to 200 us Press CLEAR MENU to remove any menu that may be on the screen c Verify that the channel is operational Confirm that the following statements are true m The vertical scale readout for the channel under test shows a setting of 200 mV and a square wave probe compensation signal about 2 5 divisions in amplitude is on screen See Figure 1 1 on page 1 3 to locate the readout m The vertical POSITION knob moves the signal up and down the screen when rotated m Turning the vertical SCALE knob counterclockwise decreases the amplitude of the waveform on screen turning the knob clockwise increases the amplitude and returning the knob to 200 mV returns the amplitude to about 2 5 divisions d Verify that the channel acquires in all acquisition modes Press SHIFT then press ACQUIRE MENU Use the side menu to select in turn each of the five hardware acquire modes and confirm that the following statements are true Refer to the icons at the left of each statement as you confirm those statements etd Sample mode displays an actively acquiring waveform on screen Note that there is noise present on the peaks of the square wave LU Peak Detect mode displays an actively acquiring waveform on screen with the noise present in Sample mode peak de tected TDS 520A 524A 540A amp 544A Performance Verification 1 7 Brief
38. TION GND See Figure 1 3 on page 1 6 b Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup then press the side menu button OK Confirm Factory Init c Modify default settings m Press AUTOSET to obtain a viewable triggered display Set the horizontal SCALE to 200 us m Press CLEAR MENU to remove the menus from the screen 2 Verify that the time base operates Confirm the following statements a One period of the square wave probe compensation signal is about five horizontal divisions on screen for the 200 us horizontal scale setting set in step 1c b Rotating the horizontal SCALE knob clockwise expands the wave form on screen more horizontal divisions per waveform period and that counterclockwise rotation contracts it and that returning the horizontal scale to 200 us returns the period to about five divisions c The horizontal POSITION knob positions the signal left and right on screen when rotated 3 Remove the test hookup Disconnect the probe from the channel input and the probe compensation terminals TDS 520A 524A 540A amp 544A Performance Verification 1 9 Brief Procedures Verify the Main and Delayed Trigger Systems Equipment Required One P6139A probe Prerequisites None Procedure 1 Install the test hookup and preset the oscilloscope controls a Hook up the signal source Install the probe on CH 1 Connect the probe tip to PR
39. acquisitions using single shot sample acquisition modes Time Measurement Error lt 15 Si 25 ppm x Reading Time Per Div 1000 Add 50 ps typical Channel Skew for 2 channel measurements Sample calculation To measure the width of a 65 5 ns pulse at 1 GS sec sampling Time Measurement Error lt 0 15 x 1 ns 2 5 x 10 5 65 5 ns 50 ns div 1000 lt 0 15 ns 0 002 ns 0 05 ns lt 202 ps lt 250 ps for any two channels with equal volts division and coupling settings 100 MHz 20 MHz Volis Div Setting Rise Time 5 mV div 10 V div 800 ps 2 mV div 4 98 mV div 1 2 ns 1 mV div 1 99 mV div 1 6 ns lt 1 DL differential lt 1 DL integral independently based TDS 520A 524A 540A amp 544A Performance Verification 2 21 Typical Characteristics Table 2 13 Typical Characteristics Signal Acquisition System Cont Name Description Step Response Settling Errors Volis Div Setting Step Settling Error TDS 540A and 544A all channels Amplitude TDS 520A and 524A CH1 CH2 only 20ns 100ns 20ms 1 mV div 99 5 mV div lt 2V lt 0 5 lt 0 2 lt 0 1 100 mV div 995 mV div lt 20 V lt 1 0 lt 0 5 lt 0 2 1 V div 10 V div lt 200 V lt 1 0 lt 0 5 lt 0 2 1 The limits are given for signals having pulse height gt 5 div reference level 50 mid point filter set to Sin x x acquired at gt 5 mV div 1 4 lt Tt g lt 5 where S is the hardware sample interval and t is the s
40. adout lt 250 mV d Check Delayed Trigger output against limits Move the precision 50 Q cable from the Main Trigger Output BNC to the Delayed Trigger Output BNC CHECK that the Ch2 High readout is 1 0 volt and that the Ch2 Low readout lt 250 mV Press the side menu button select the 1 MQ setting Press CLEAR MENU CHECK that the Ch2 High readout is 2 5 volts and that the Ch2 Low readout is lt 700 mV 3 Confirm CH 3 output is within limits for gain a Measure gain Move the precision 50 Q cable from the rear panel DELAYED TRIGGER OUTPUT BNC to the rear panel SIGNAL OUTPUT BNC Push SHIFT Then push DELAYED TRIG Press the main menu button Source Then press the side menu button Ch3 Push HORIZONTAL MENU Push the main menu button Time Base Then press the side me nu button Delayed Triggerable Set vertical SCALE to 100 mV Press MEASURE then press the main menu button Select Measrmnt for Ch2 Repeatedly press the side menu button more until Pk Pk appears in the side menu its icon is shown at the left Press the side menu button Pk Pk Press CLEAR MENU Performance Verification Procedures Performance Tests b Check against limits m CHECK that the readout Ch2 Pk Pk is between 90 mV and 110 mV inclusive Press VERTICAL MENU then press the side menu button Q to toggle to the 50 Q setting Set vertical SCALE to 10 mV then press CLEAR MENU CHECK that the readout Ch2 Pk Pk
41. al to the memory ICs The amount of lithium is so small in these ICs that they can typically be safely disposed of with ordinary garbage in a sanitary landfill 2 24 Specifications
42. andwidth ine Scale Position Cal Probe Fu Ch2 Fine Scale E Fine Scale 4 PL nn SOS S00mV MST Vid Ch1 eS 5 Eu V a div Eu initialized Seeeeee Figure 1 35 60 Hz Rejection Test Result Disconnect all test equipment from the digitizing oscilloscope 6 Check Line Count Accuracy a Setup oscilloscope for Line Count Accuracy Test Press WAVEFORM OFF Press CH1 Press HORIZONTAL MENU Press the main menu Record Length Press if needed the side menu more 1 of 2 Press the side menu 5000 points in 100divs Press the main menu Horiz Scale div Use the keypad to set the horizontal scale to 200 ns press 200 SHIFT n then ENTER b Check Line Count Accuracy Connect a composite output signal from the PAL signal source on the TSG 121 this refers to the signal at the rear labelled COMPST to the CH1 input through a 75 Q cable and a 75 Q terminator See Figure 1 36 TDS 520A 524A 540A amp 544A Performance Verification 1 69 Performance Tests PAL Signal Source TSG121 O0O00OO COMPST 750 Cable 75Q Terminator Figure 1 36 Line Count Accuracy Test Hookup m Press the main menu Trigger Position m Press the side menu to Set to 50 m Press the main menu Horiz Pos m Press the side menu to Set to 50 m Use the HORIZONTAL POSITION knob to move the falling edge of the sync pulse to two divisions to t
43. auxiliary channel trigger sources therefore triggering is not required Verify that the channel is operational Confirm that the following statements are true m The vertical scale readout for the channel under test shows a setting of 1 V and a square wave probe compensation signal about amp on page 1 3 to locate the readout m The vertical POSITION knob moves the signal up and down the screen when rotated m Turning the vertical SCALE knob counterclockwise to 10 V decreases the amplitude of the waveform on screen The ampli tude will drop to near zero when doing this substep m Returning the knob to 1 V returns the amplitude to about divi sion Verify that the channel acquires in all acquisition modes Disconnect the probe ground lead from the probe compensation terminal Do step 2 substep d to verify the five acquire modes Performance Verification Procedures Brief Procedures e Test all channels Repeat substeps a through d to verify AUX 2 4 Remove the test hookup Disconnect the probe from the channel input and the probe compensation terminals Verify the Time Base Equipment Required One P6139A probe Prerequisites None Procedure 1 Install the test hookup and preset the oscilloscope controls a Hook up the signal source Install the probe on CH 1 Connect the probe tip to PROBE COMPENSATION SIGNAL on the front panel connect the probe ground to PROBE COMPENSA
44. ble trigger is obtained for the test waveform on both the positive and negative slopes Use the side menu to switch between trigger slopes use the TRIGGER LEVEL knob to stabilize the trigger if required See Figure 1 20 Performance Verification Procedures Performance Tests Run 2 50G5 5 ET Average Edge Slope p chi Amp 42mv Le First set a signal with an amplitude at the minimum trigger sensitivity Second check for a stable trigger at both the positive and negative slope settings M 20 0ns Ch1 T Amy Toomva Level oge Source coupling Slope amp seine Sami Holdoff See Figure 1 20 Measurement of Trigger Sensitivity m Leave the Main trigger system triggered on the positive slope of the waveform before continuing to the next step The Main trigger system must be triggered to check the delayed trigger system in the next step c Check delayed trigger system for stable triggering at limits Do the following subparts in the order listed m Press HORIZONTAL MENU then press the main menu button Time Base Now press the side menu button Delayed Only m Press SHIFT then press DELAYED TRIG Press the main menu button Level m Press the side menu button SET TO 50 CHECK that a stable trigger is obtained for the test waveform for both the positive and negative slopes of the waveform Use the General Purpose knob to stab
45. ccuracy Pulse Width Triggering 2 ns to 1 us Z ns 1 02 us to is a setting Sensitivity Edge Type Trigger DC Trigger Source Sensitivity Coupled TDS 540A 0 35 division from DC to 50 MHz increasing to 544A 1 division at 500 MHz CH1 CH4 TDS 520A 524A CH1 CH2 0 55 division from DC to 50 MHz increasing to 1 5 division at 500 MHz TDS 520A 524A 0 25 volts from DC to 50 MHz AUX1 AUX2 Auxiliary TDS 540A 544A only Width Minimum Pulse and Rearm Pulse Class Minimum Minimum Rearm Width for Pulse Triggering Pulse Width Glitch 2ns 2 ns 5 of Glitch Width Setting 2 5 ns Runt Bods 2 ns 5 of Width Upper Limit Width 2ns Setting Jitter Option 05 Video Trigger 17 NSp p on HDTV signal 60 NSp p on NTSC or PAL signal Input Signal Sync Amplitude for 0 6 division to 4 division 1 division to 4 divisions in Numerical Field Stable Triggering Option 05 Video Trigger 1 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 TDS 520A 524A 540A amp 544A Performance Verification 2 17 Warranted Characteristics Table 2 11 Warranted Characteristic
46. channels use the columns for CH 1 CH 4 when testing CH 1 and CH 2 use the columns for AUX 1 and AUX 2 when testing those channels Table 1 2 DC Offset Accuracy Zero Setting Vertical Scale Vertical Setting Position Offset Accuracy Limits CH1 AUX 1 amp and Offset CH 4 AUX 2 Setting CH1 CH4 AUX 1 amp AUX 2 1 mV 100mV 0 l mV mV 100mV 1V 0 J mV a mV 1V 10 V 0 l mV V 1Vertical position is set to 0 divisions and vertical offset to 0 V when the oscilloscope is initialized in step 1 b g Set the vertical scale Set the vertical SCALE to one of the settings listed in Table 1 2 that is not yet checked Start with the first setting listed Display the test signal The baseline DC test level was initialized for all channels in step 1 and is displayed as you select each channel and its vertical scale Be sure not to use the vertical POSITION knob while checking any channel for accuracy of offset since varying the position invalidates the check Measure the test signal Rotate the general purpose knob to superim pose the active cursor over the baseline DC test level Ignore the other cursor Read the measurement results at the absolute cursor readout not the delta A readout on screen see Figure 1 4 Check against limits Do the following subparts in the order listed m CHECK that the measurement results are within the limits listed for the c
47. channels having equal volts division settings 1MQ 50 OG a pF lt 1 3 1 from DC 500 MHz MHz 5 Vams with peaks lt V lt 10 Hz when AC 1 MO Coupled lt 200 kHz when AC 50 Q Coupled Offset Accuracy is the accuracy of this Voltage level 2 The samples must be acquired under the same setup and ambient conditions Net Offset Offset Position x Volts Div Net Offset is the nominal voltage level at the center of the A D converter dynamic range To ensure the most accurate measurements possible run an SPC calibration first When using the oscilloscope at a Volts Div set ting lt 5 mV div an SPC calibration should be run once per week to ensure that instrument performance levels meet specifications gt each C above 30 C o The limits given are for the ambient temperature range of 0 C to 30 C Reduce the upper bandwidth frequencies by 2 5 MHz for The AC Coupled Lower Frequency Limits are reduced by a factor of 10 when 10X passive probes are used Table 2 9 Warranted Characteristics Time Base System Name Description Accuracy Long Term Sample Rate and Delay Time gt 1 ms interval Specifications Warranted Characteristics Table 2 10 Warranted Characteristics Triggering System Name Description Accuracy Time for Pulse Glitch or Time Range A
48. creen When compensation completes the status message will be updated to Pass or Fail in the main menu see step h Confirm signal path compensation returns passed status Verify the word Pass appears under Signal Path in the main menu See Figure 1 2 2 Return to regular service Press CLEAR MENU to exit the system me nus TDS 520A 524A 540A amp 544A Performance Verification 1 5 Brief Procedures Functional Tests The purpose of these procedures is to confirm that this oscilloscope functions properly The only equipment required is one of the standard accessory probes and to check the file system a 3 5 inch 720 K or 1 44 Mbyte floppy disk D D These procedures verify functions that is they verify that oscillo scope features operate They do not verify that they operate within limits Therefore when the instructions in the functional tests 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 divi sions etc do NOT interpret the quantities given as limits Operation within limits is checked in Performance Tests which begin on page 1 15 DO NOT make changes to the front panel settings that are not called out in the procedures Each verification procedure will require you to set the oscilloscope to certain default settings before verifying func tions If you make changes to these settings other than
49. ct through a 50 Q precision coaxial cable the time mark output of a time mark generator to CH 1 Set the output of the generator for 10 ms markers See Figure 1 12 Time Mark Generator lank an i an Xan an T Output o 0 0 0 0 0 0 0 500 Coaxial Cables Figure 1 12 Initial Test Hookup b Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init c Modify the initialized front panel control settings Set the vertical SCALE to 500 mV Press VERTICAL MENU then press the main menu button Coupling Press the side menu Q button to 50 9 m Press SET LEVEL TO 50 Use the vertical POSITION knob to center the test signal on screen Set the horizontal SCALE of the Main time base to 1 ms TDS 520A 524A 540A amp 544A Performance Verification 1 39 Performance Tests First the trigger T is aligned to the center graticule line Second the horizontal modes are set Third the horizontal scale for D time base is set and a 10 ms delay is entered Fourth the waveforms rising edge is checked to be within horizontal divisions of the center horizontal graticule line Press TRIGGER MENU then press the main menu button Mode amp Holdoff Now press the side menu button Normal m Press SET LEVEL TO 50 m Press horizontal MENU Press th
50. cy Re sponse and Pulse Trigger See Figure 1 2 Performance Verification Procedures First the CAL menu is displayed Second the adjustment sections are verified Third a signal path compensation is run and is verified Brief Procedures Tek Run 500KS 5 Sample TT 4 Signal Path ompensatio Path Compensation SPC corrects for DC inaccurackes caused by ambient temperature variations and or long term drift SPC can be run at an e after the oscillosco e is Og and shoWd be run whenever t by more than 5 ambient temperature has changed by more t E eloelo ov OK Compensate Signal Paths Te KIC Voltage Frequency Pulse N Path Reference Response Trigger Pass Pass Pass Pass Figure 1 2 Verifying Adjustments and Signal Path Compensation When doing steps f and g do not turn off the oscilloscope until signal path compensation completes If you interrupt or lose power to the instrument while signal path compensation is running a message is logged in the oscilloscope error log If such a case occurs rerun signal path compensation Run the signal path compensation Press the main menu button Signal Path then press the side menu button OK Compensate Signal Paths Wait Signal path compensation runs in about one to two minutes While it progresses a clock icon shown at left is displayed on s
51. dth Check Delay Between Channels Time Base System Checks Check Accuracy for Long Term Sample Rate Delay Time and Delta Time Measurements Trigger System Checks Check Accuracy Time for Pulse Glitch or Pulse Width TIGENO sers Nate le hart alata wee eth Check Accuracy Trigger level or Threshold DC Coupled Sensitivity Edge Trigger DC Coupled Output Signal Checks Check Outputs CH 3 and Main and Delayed Trigger TDS 540A and 544A only Check Probe Compensator Outputs Option 05 Video Trigger Checks Check Video Trigger TDS 520A 524A 540A amp 544A Performance Verification 1 1 1 2 1 4 1 4 1 6 1 6 1 9 1 10 1 12 1 15 1 15 1 16 1 19 1 23 1 23 1 25 1 32 1 36 1 39 1 39 1 42 1 42 1 45 1 48 1 54 1 54 1 57 1 61 1 61 iii Table of Contents Specifications Specifications hea iaaa a eas eens eee ae oe eee ut 2 1 General Product Description 2 1 User Interface 4 4222 ensure une 2 2 MENUS ss arabe de nana ne ana aa nie 2 2 ICG ALON ER en dot 2 2 General Purpose Knob 2 3 QUI ae ba NE ART te 2 3
52. e calibra tion generator Item 9 Prerequisites See page 1 15 Also this Digitizing Oscilloscope must have passed Check Accuracy Long Term Sample Rate Delay time Time Mea surement on page 1 39 and Check Accuracy for DC Gain and Voltage Mea surements on page 1 25 Procedure 1 Install the test hookup and preset the instrument controls a Hook up test signal source 1 Connect the standard amplitude output of a calibration generator through a 50 Q precision coaxial cable to CH 3 See Figure 1 21 Set the output of the calibration generator to 0 500 V b Hook up test signal source 2 Connect the Main Trigger Out at the rear panel to CH 2 through a 50 Q precision cable See Figure 1 21 To Main Trigger Out a Calibration Generator 00000 gg Oo Output 500 Coaxial Cables Figure 1 21 Initial Test Hookup c Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init 1 54 Performance Verification Procedures Performance Tests d Modify the initialized front panel control settings Set the horizontal SCALE to 200 us Press SHIFT then ACQUIRE MENU m Press the main menu button Mode Then press the side menu button Hi Res 2 Confirm Main and Delayed Trigger outputs are within limits for logic levels a Display the test signal Press WAVEFORM OFF to tur
53. e main menu button Record Length then press the side menu button 1000 points in 20 divs m Press the main menu button Trigger Position Press the side menu button Pretrigger then set pretrigger to 20 press 20 then ENTER on the keypad 2 Confirm Main and Delayed time bases are within limits for accuracies a Display the test signal Adjust the horizontal POSITION so the trigger T is aligned to the center vertical graticule line m Press the main menu button Time Base m Press the side menu buttons Delayed Only and Delayed Runs After Main b Measure the test signal Set the horizontal SCALE of the D delayed time base to 100 ns m Use the keypad to set delayed time to 10 ms Press 10 then SHIFT then m followed by ENTER Run 500MS s Sample Delay Time 10 000000ms Time Base SN Main Only LR Intensified Dela ed Runs 00000mS a ter Main Delayed 770mV Triggerable D 100ns Runs After see Delayed Trig Menu as 4 a z Red L n PIE me Rase Trager n Length Scale Hone FE y 20 1000 div EE M1 00ms Chi nue Figure 1 13 Measurement of Accuracy Long Term and Delay Time 1 40 Performance Verification Procedures Performance Tests c Check long term sample rate and delay time accuracies against limits CHECK that the rising edge of the marker crosses the center horizontal graticule line at a point within a
54. e measurement Mean readout on screen is within the limits listed for the current vertical scale and position offset generator settings m Repeat step d reversing the polarity of the position offset and generator settings as is listed in the table m CHECK that the Mean measurement readout on screen is within the limits listed for the current vertical scale setting and position offset generator settings Repeat substeps c through f until all vertical scale settings set tings listed in Table 1 3 and Table 1 4 for the TDS 520A and 524A are checked for the channel under test g Test all channels Repeat substeps a through f for all four channels 5 Disconnect the hookup a Set the generator output to O V b Then disconnect the cable from the generator output at the input connector of the channel last tested TDS 520A 524A 540A amp 544A Performance Verification 1 31 Performance Tests Check Analog Bandwidth Equipment Required One high frequency leveled sine wave generator and its leveling head Item 11 plus two10X attenuators Item 1 Prerequisites See page 1 15 Procedure 1 Install the test hookup and preset the instrument controls a Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init b Modify the default settings Set the horizontal SCALE to 50 ns Now press SHIFT then ACQUIRE MENU
55. e test equipment is required See Equipment Required on page 1 15 If you are not familiar with operating this oscilloscope read the TDS 520A 524A 540A 544A amp 644A Reference or the TDS 520A 524A 540A amp 544A User manual These contain instructions that acquaint you with the use of the front panel controls and the menu system TDS 520A 524A 540A amp 544A Performance Verification 1 1 Brief Procedures Conventions Throughout these procedures the following conventions apply Each test procedure uses the following general format Title of Test Equipment Required Prerequisites Procedure Each procedure consists of as many steps substeps and subparts as required to do the test Steps substeps and subparts are sequenced as follows 1 First Step a First Substep m First Subpart m Second Subpart b Second Substep 2 Second Step In steps and substeps the lead in statement in italics instructs you what to do while the instructions that follow tell you how to do it in the exam ple step below Initialize the oscilloscope by doing Press save recall SETUP Now press the main menu button Initialize the oscilloscope Press save recall SETUP Now press the main menu button Recall Factory Setup then the side menu button OK Confirm Factory Init Where instructed to use a front panel button or knob or select from a main or side menu or verify a readout or status message the name of the button
56. e the screen CONFIRM the digitizing oscilloscope is setup as shown below Channel CH1 Volt div 100 mV Horizontal scale 500 us div 2 Setup digitizing oscilloscope for TV triggers by completing the following steps a Press TRIGGER MENU b Press the main menu Type pop up until you select Video c Press the main menu Standard pop up until you select 625 PAL d Press the main menu Line e Use the keypad to set the line number to 7 press 7 then ENTER f Press VERTICAL MENU g Press the main menu Bandwidth h Select 100 MHz from the side menu i Press the main menu Fine Scale j Use the keypad to set the fine scale to 282mV press 282 SHIFT m then ENTER k Press HORIZONTAL MENU Press the main menu Horiz Scale m Use the keypad to set the horizontal scale to 200 ns press 200 SHIFT n then ENTER TDS 520A 524A 540A amp 544A Performance Verification 1 61 Performance Tests 3 Check Jitter vs Signal Amplitude a Setup equipment for Jitter Test See Figure 1 27 m Connect one of the rear panel composite outputs marked COMPST on the TSG121 through a 75 Q cable anda 75 Q terminator to the oscilloscope CH1 input m Press the PAL signal source 100 FIELD control the fourth TSG121 front panel button from the left 00 Oto PAL Signal Source TSG121 00000 gg 0 10O0000 COMPST 30 750 Cable 750 Terminator Figure 1 27 Jitter Tes
57. ect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES 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 Welcome This is the Performance Verification for the TDS 520A 524A 540A and 544A Oscilloscope It contains procedures suitable for determining if the instrument functions was adjusted properly and meets the performance characteristics as warranted Also contained in this document are technical specifications for these oscillo scopes Related Manuals The following documents are related to the use or service of the digitizing oscilloscope m The TDS 520A 524A 540A amp 544A User Manual Tektronix part number 070 8710 01 The TDS Family Programmer Manual Tektronix part number 070 8709 01 describes using a computer to control the digitizing oscillo scope through the GPIB interface m The TDS 520A 524A 540A 544A amp 644A Reference Tekt
58. ements on the displayed waveforms Horizontal bar cursors H Bar measure vertical parameters typically volts Vertical bar cursors V Bar measure horizontal parameters typically time or frequency and now extend to the top and bottom of the screen Paired cursors measure both amplitude and time simul taneously These are delta measurements that is measurements based on the difference between two cursors Specifications Storage and I O Specifications Both H Bar and V Bar cursors can also be used to make absolute measure ments that is measurements relative to a defined level or event For the H Bars either cursor can be selected to read out its voltage with respect to any channels ground reference level For the V Bars it s time with respect to the trigger point event of the acquisition and the cursors can control the portion of the waveform on which automatic measurements are made For time measurements units can be either seconds or Hertz for 1 time When the video trigger option installed Option 05 the video line number can be selected using the vertical cursors IRE amplitude NTSC can be mea sured using the horizontal cursors with or without the video trigger option installed Measure Measure can automatically extract parameters from the signal input to the Digitizing Oscilloscope Any four out of the more than 20 parameters available can be displayed to the screen The waveform parameters are measured cont
59. eps a through d for all four channels 3 Reestablish the initial test hookup setup a Hook up the test signal source Set the output of a DC calibration generator to 0 volts m Move the BNC T connector back to CH 1 b Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init c Modify the default settings Press SHIFT then ACQUIRE MENU m Press the main menu button Mode then press the side menu button Average 16 m Press DISPLAY m Press the main menu button Graticule then press the side menu button Frame 1 28 Performance Verification Procedures Performance Tests 4 Confirm input channels are within limits for DC accuracy at maximum offset and position Do the following substeps test CH 1 first skipping substep a since CH 1 is already selected from step 3 a Select an unchecked channel Press WAVEFORM OFF to remove the channel just confirmed from the display m Press the front panel button that corresponds to the channel you are to confirm m Set the generator output to O V m Move the test hookup to the channel you select b Turn on the measurement Mean for the channel m Press MEASURE then press the main menu button Select Measrmnt for CHx m Press the side menu button more until the menu label Mean ae appears in the side menu its icon is shown at the left Press the side menu button Mean m
60. erator amplitude push SET LEVEL TO 50 frequently to speed up the updating of the waveform ampli tude on screen TDS 520A and 524A only Press CH 2 then skip to substep e and continue this check If testing a TDS 540A or 544A model continue with the next substep b b Save a CH 2 waveform Press CH 2 then press save recall WAVE FORM Now press the main menu button Save Wfm Ch2 then press the side menu button To Ref 2 c Save CH 3 waveform Move the coupler from CH 2 to CH 3 so that CH 1 and CH 3 are driven Press CH 3 then press the side menu button To Ref 3 d Display all test signals Press WAVEFORM OFF twice to remove CH 2 and CH 3 from the display Move the coupler from CH 3 to CH 4 so that CH 1 and CH 4 are driven Press CH 4 Now press the front panel button MORE Press the main menu buttons Ref 2 and Ref 3 e Measure the test signal Locate the point on the rising edge of the left most waveform where it crosses the center horizontal graticule line This is the time reference point for this waveform Note the corresponding time reference point for right most waveform See Figure 1 11 m Press CURSOR then press the side menu button V Bars m Press CLEAR MENU Rotate the General Purpose knob to align one cursor to the time reference point of the left most waveform edge and the other cursor to the time reference point of the right most waveform edge Press SELECT to switch between the two cursor
61. he left of center screen See Figure 1 37 Run 250MS s5 rigger Position 50 Trigger Position ttt 50 Pretrigger ps 3 Set to 10 Set to 50 4 Set to 90 282mv amp M 200ns vid chi 1 7 Time Base UGE i FastFrame Main Figure 1 37 Line Count Accuracy Test Setup Waveform m Press CURSOR m Press the main menu Function 1 70 Performance Verification Procedures Performance Tests m Press the side menu V Bars Using the General Purpose knob place the left cursor directly over the trigger T icon m Press SELECT Turn the General Purpose knob to adjust the right cursor for a cursor delta reading of 6 780us m Use the HORIZONTAL POSITION knob to position the right cursor to center screen Verify that the cursor is positioned on a positive slope of the burst signal See Figure 1 38 Run 250MS s Sample Cursor Function 282mV Ey A M 200ns Vid Chi 1 7 Function Mode time i mpritudey aa RE indep seins Base Figure 1 38 Line Count Accuracy Correct Result Waveform m Disconnect all test equipment TSG 121 from the digitizing oscilloscope m Turn off cursors by pressing CURSOR then the main menu Function button and finally Off from the side menu 7 Check the Sync Duty Cycle a Setup digitizing oscilloscope for Sync Duty Cycle Test Press TRIGGER MENU Press
62. ignal rise time N The numbers given are valid 0 C to 30 C and will increase as the temperature increases due to the degradation in bandwidth Rise time is calculated from the bandwidth It is defined by the following formula ____ 400 Rise Time ns BW MHz Note that if you measure rise time you must take into account the rise time of the test equipment signal source etc that you use to provide the test signal That is the measured rise time RT is determined by the instrument rise time RT and the rise time of the test signal source RTgen according to the following formula RTm 2 RT 2 RTgen 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 ampli tude Table 2 14 Typical Characteristics Time Base System Name Description Aperture Uncertainty lt 5 ps EN ET 2 22 Specifications Typical Characteristics Table 2 15 Typical Characteristics Triggering System Name Description Accuracy Trigger Level or Thresh Trigger Accuracy old DC Coupled Source Input Auxiliary Trigger Trigger Marker Position Edge Trigger ing Holdoff Variable Main Trigger Width Minimum Pulse and Rearm for Logic Triggering or Events Delay Lowest Frequency for Successful Op eration of
63. ilize the trigger if required Press the main menu button Slope then use the side menu to switch between trigger slopes m Leave the delayed trigger system triggered on the positive slope of the waveform before continuing to the next step Also return to the main time base Press HORIZONTAL MENU then press the main menu button Time Base Now press the side menu button Main Only TDS 520A or 524A only Skip to step 4 since the TDS 520A and 524A are not equipped with an AUX Trigger input If testing the TDS 540A or 544A continue with step 3 TDS 520A 524A 540A amp 544A Performance Verification 1 51 Performance Tests 3 Confirm the AUX Trigger input a Display the test signal m Remove the 10X attenuator and reconnect the cable to CH 1 Set the test signal amplitude for about 2 5 divisions on screen Now fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 250 mV Readout may fluctu ate around 250 mV b Check the AUX trigger source for stable triggering at limits Do the following in the order listed m Use the definition for stable trigger from step 2 Press TRIGGER MENU then press the main menu button Source m Press the side menu button more until the side menu label Auxiliary appears then press Auxiliary m Press SET LEVEL TO 50 CHECK that a stable trigger is obtained for the test waveform on both the positive and negative slopes Press the main menu button Sl
64. in the menu that pops up Press the main menu button Class then repeatedly press the same button until Width is highlighted in the menu that pops up Press the main menu button Trig When then press the side me nu button Within Limits Press the side menu button Upper Limit Use the keyboard to set the upper limit to 10 ns press 10 then SHIFT then n then ENTER Press the side menu button Lower Limit Use the keypad to set the lower limit to 2 ns d Check against limits Press SET LEVEL TO 50 While doing the following subparts monitor the display it will stop acquiring and the front panel light TRIG it will extinguish to determine when triggering is lost Use the general purpose knob to increase the Lower Limit readout until triggering is lost CHECK that the Lower Limit readout is within 2 5 ns to 7 5 ns inclusive Use the keypad to return the Lower Limit to 2 ns and reestablish triggering Press the side menu button Upper Limit then use the general purpose knob to slowly decrease the the Upper Limit readout until triggering is lost CHECK that the Upper Limit readout is within 2 5 ns to 7 5 ns inclusive TDS 520A 524A 540A amp 544A Performance Verification 1 43 Performance Tests 1 44 First the upper and lower limits are set so the test waveform triggers within limits Second a limit here the lower limit is increased until triggering stops Run 5 00GS s ET Sample Width Lower
65. ing Sensitivities Pulse Type Runt Trigger 1 0 division from DC to 200 MHz with a minimum slew rate of 25 divisions us at the trigger level or the threshold crossing TDS 520A 524A 540A amp 544A Performance Verification 2 23 Typical Characteristics Table 2 15 Typical Characteristics Triggering System Cont Name Description Sensitivities Pulse Type Trigger Width 1 0 division with a minimum slew rate of 25 div us at the trigger level and Glitch or the threshold crossing For lt 5 nsec pulse width or rearm time 2 divisions are required Sensitivities Derating Aux Channel Trig All trigger sensitivity specifications are derated by 50 for AUX 1 and ger TDS 520A amp 524A AUX2 inputs Sync Width Option 05 Video Trigger min 400 ns for HDTV signals Sync Duty Cycle min 50 to 1 Option 05 Video Trigger Hum Rejection NTSC and PAL 20 dB without any trigger spec deterioration Trig Option 05 Video Trigger gering will continue down to 0 dB with some performance deteriora tion 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 division ns N 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 2 3 on page 2 10
66. ing oscillo scope are potential shock hazards This includes knobs and controls that may appear to be insulators Use the Proper Power Cord Use only the power cord and connector specified for your product Use only a power cord that is in good condition Use the Proper Fuse To avoid fire hazard use only the fuse specified in the parts list for your product matched by type voltage rating and current rating Do Not Remove Covers or Panels To avoid personal injury do not operate the digitizing oscilloscope without the panels or covers Electric Overload Never apply to a connector on the digitizing oscilloscope a voltage that is outside the range specified for that connector Do Not Operate in Explosive Atmospheres The digitizing oscilloscope provides no explosion protection from static dis charges or arcing components Do not operate the digitizing oscilloscope in an atmosphere of explosive gases Safety Performance Verification Procedures General Instructions Brief Procedures The Self Tests use internal routines to confirm basic functionality and proper adjustment No test equipment is required to do these test procedures The Functional Tests utilize the probe compensation output at the front panel as a test signal source for further verifying that the oscilloscope functions properly standard accessory probe included with this oscilloscope is the only equipment required Besides the Brief Procedures the set
67. inuously with the results updated on screen as the Digitizing Oscilloscope continues to acquire waveforms Digital Signal Processing DSP An important component of the multiprocessor architecture of this Digitizing Oscilloscope is Tektronix s proprietary digital signal processor the DSP This dedicated processor supports advanced analysis of your waveforms when doing such compute intensive tasks as interpolation waveform math and signal averaging It also teams with a custom display system to deliver spe cialized display modes See Display later in this description Acquired waveforms may be saved in any of four nonvolatile REF reference memories or if available on a 3 5 inch DOS 3 3 or later compatible disk The disk is standard on the TDS 524A and 544A It is available as option 1F on the 520A and 540A Any or all of the saved waveforms may be displayed for comparison with the waveforms being currently acquired The source and destination of waveforms to be saved may be chosen As signment can be made to save any of the four channels to any REF memory or to move a stored reference from one REF memory to another Reference waveforms may also be written into a REF memory location via the GPIB interface The Digitizing Oscilloscope is fully controllable and capable of sending and receiving waveforms over the GPIB interface IEEE Std 488 1 1987 IEEE Std 488 2 1987 standard This feature makes the instrument ideal for making automa
68. is procedure m Passed the Verify Internal Adjustment Self Compensation and Diagnostics procedure found under Self Tests on page 1 4 NOTE Passing the signal path compensation confirms the signal path for all vertical scale settings for all channels Passing the internal diagnostics ensures that the factory set adjustment constants that control the bandwidth for each vertical scale setting have not changed h Check remaining vertical scale settings against limits optional m f desired finish checking the remaining vertical scale settings for the channel under test by repeating substeps d through g for each of the remaining scale settings settings listed in Table 1 5 for the channel under test m When doing substep e skip the subparts that turn on the CHx Pk Pk measurement until you check a new channel m Install remove 10X attenuators between the generator leveling head and the channel input as is needed to obtain the six division reference signals listed in the table i Test all channels Repeat substeps a through g for all four channels 3 Disconnect the hookup Disconnect the test hook up from the input con nector of the channel last tested TDS 520A 524A 540A amp 544A Performance Verification 1 35 Performance Tests 1 36 Check Delay Between Channels Equipment Required One medium frequency leveled sine wave generator Item 10 one precision 50 Q coaxial cable Item 4 one 50 Q terminator Item 3
69. ites listed on page 1 15 1 Preset the instrument controls a Initialize the oscilloscope Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init m Press CLEAR MENU to remove the menus from the screen b Modify the default settings Set the horizontal SCALE to 1 ms Press SHIFT then ACQUIRE MENU m Press the main menu button Mode then press the side menu button Hi Res m Press DISPLAY m Press the main menu button Graticule then press the side menu button Frame m Press CURSOR m Press the main menu button Function then press the side menu button H Bars m Press CLEAR MENU 2 Confirm input channels are within limits for offset accuracy at zero offset Do the following substeps test CH 1 first skipping substep a since CH 1 is already set up to be checked from step 1 a Select an unchecked channel Press WAVEFORM OFF to remove the channel just confirmed from the display Then press the front pa nel button that corresponds to the channel you are to confirm TDS 520A 524A 540A amp 544A Performance Verification 1 23 Performance Tests 1 24 6 Follow these rules to match this procedure to the model of the oscillo scope under test Models TDS 540A 544A Only When using Table 1 2 to test CH 1 CH 4 ignore the columns for AUX 1 amp AUX 2 settings and limits Model TDS 520A 524A Only Use Table 1 2 to test input
70. l SCALE to 200 us Press Set Level to 50 and use the VERTICAL POSITION knob to center the display on screen Press SHIFT then ACQUIRE MENU m Press the main menu button Mode then press the side menu Average button Select 128 averages On the keypad type 128 then press EN TER 2 Confirm that the Probe Compensator signal is within limits for frequency a Measure the frequency of the probe compensation signal m Press MEASURE then press the main menu button Select Measrmnt for Ch1 m Repeatedly press the side menu button more until Frequency appears in the side menu its icon is shown at the left Press the side menu button Frequency m Press CLEAR MENU to remove the menus from the display See Figure 1 24 Run 250kS 5 Average Ch1 Freq N 3 i A j i Eht Ered jojololo E W tomy 0ps Chi F 246m 25 Feb 1993 17 38 45 S sisisicicl Figure 1 24 Measurement of Probe Compensator Frequency 1 58 Performance Verification Procedures Performance Tests b Check against limits CHECK that the CH 1 Freq readout is within 950 Hz to 1 050 kHz inclusive 3 Confirm that the Probe Compensator signal is within limits for amplitude a Save the probe compensation signal in reference memory Press SAVE RECALL WAVEFORM then press the main menu button Save Wfm Ch 1 m Press the side menu button to Ref 1 to save the probe compen sation
71. l position to 3 divisions Second set input equal to the offset to return the DC level to the screen Third push SET LEVEL to 50 and check the results in the main menu under Level Figure 1 17 Performance Tests Run 100kS 5 Sample Edge Slope 100m 500us Chi 9 0 Source coupling ITS Level ode Type amp Dee Chi BC f 9 992v Hoco Measurement of Trigger level Accuracy 3 Confirm Delayed trigger system is within limits for Trigger level Threshold accuracy a Select the Delayed time base Press HORIZONTAL MENU m Press the main menu button Time Base m Press the side menu buttons Delayed Only and Delayed Trig gerable Set D delayed horizontal SCALE to 500 us Select the Delayed trigger system Press SHIFT then press the front panel button DELAYED TRIG m Press the main menu button Level Measure the test signal Press the side menu button SET TO 50 The TRIG D indicator should be lit Read the measurement results in the side menu below the label Level Check against limits Do the following subparts in the order listed CHECK that the Level readout in the side menu is within 9 940 V to 10 060 V inclusive Press the main menu button Slope then press the side menu button for negative slope See icon at left Press the main menu button Level Repeat substep c TDS 520A 524A 540A amp 544A Performance Verificatio
72. le Style of waveform display s vectors or dots intensified or non intensified samples infinite persistence and variable persistence with color coding m Interpolation method Sin x x or Linear m Display format xy or yt with various graticule selections including NTSC and PAL to be used with video trigger Zoom This Digitizing Oscilloscope also provides an easy way to focus in on those waveform features you wish to examine up close By invoking zoom you can magnify the waveform parameter using the vertical and horizontal controls to expand or contract and position it for viewing Specifications Nominal Traits This subsection contains tables that list the electrical and mechanical nominal traits that describe the TDS 520A 524A 540A and 544A Digitizing Oscilloscopes Nominal traits are described using simple statements of fact such as Four all identical for the trait Input Channels Number of rather than in terms of limits that are performance requirements Table 2 2 Nominal Traits Signal Acquisition System Name Description Bandwidth Selections Digitizers Number of Digitized Bits Number of Input Channels Number of Input Coupling Input Impedance Selections Ranges Offset TDS 540A 544A and CH1 and CH2 on TDS 520A and 524A Ranges Offset AUX1 and AUX2 on TDS 520A and 524A Range Position Range Sensitivity 20 MHz 100 MHz and FULL 500 MHz TDS 540A and
73. mp center graticule See Figure 1 13 d Check delta time accuracy against limits Press the side menu button Main Only Set horizontal SCALE to 2 ns Set the output of the generator for 20 ns markers Press SET LEVEL TO 50 Press SHIFT then ACQUIRE MENU Next press the main menu button Mode Finally press the side menu button Average Enter 8 for eight averages on the keypad Press MEASURE Press the main menu button High Low Setup then press the side menu button Min Max Press the main menu button Select Measrmnt for Ch1 Press the side menu button more until PERIOD appears in the side menu Press PERIOD Press CLEAR MENU CHECK that the readout for CH 1 Per is within 19 760 ns to 20 240 ns 3 Disconnect the hookup Disconnect the cable from the generator output at the input connector of CH 1 TDS 520A 524A 540A amp 544A Performance Verification 1 41 Performance Tests Trigger System Checks 1 42 These procedures check those characteristics that relate to the Main and Delayed trigger systems and are listed as checked under Warranted Charac teristics in Section 2 Specifications Check Accuracy Time for Pulse Glitch or Pulse Width Triggering Equipment Required One medium frequency leveled sine wave generator Item 10 one 10X attenuator Item 1 and one precision 50 Q coaxial cable Item 4 Prerequisites See page 1 15 Procedure 1 Install the test hookup and prese
74. n For example the first time you run this on a blank for matted disk or on the Example Programs Disk the TDS will assign the name TEK00000 SET to your file If you ran the procedure again the TDS would increment the name and call the file TEK00001 SET Performance Verification Procedures Brief Procedures Press the side menu button Save To Selected File 2 Verify the file system works Press AUTOSET to restore the 500 us time base and the five cycle waveform Press the main menu button Recall Saved Setup then press the side menu button From File Turn the general purpose knob to select the file to recall For example if you followed the instructions above and used a blank disk you had the TDS assign the name TEKO0000 SET to your file Press the side menu button Recall From Selected File Verify that Digitizing Oscilloscope retrieved the saved setup from the disk Do this by noticing the horizontal SCALE for the M main time base is again 200 us and the waveform shows only two cycles just as it was when you saved the setup 3 Remove the test hookup Disconnect the standard accessory probe from the channel input and the probe compensation terminals Remove the disk from the disk drive Do this by pushing in the tab at the bottom of the disk drive TDS 520A 524A 540A amp 544A Performance Verification 1 13 Brief Procedures 1 14 Performance Verification Procedures Performance Te
75. n 1 47 Performance Tests 1 48 CHECK that the Level readout in the side menu is within 9 940 V to 10 060 V inclusive 4 Disconnect the hookup a First set the output of the DC calibration generator to O volts b Then disconnect the cable from the generator output at the input connector of CH 1 Sensitivity Edge Trigger DC Coupled Equipment Required One medium frequency leveled sine wave generator Item 10 one high frequency leveled sine wave generator Item 11 one precision 50 Q coaxial cable Item 4 and one 10X attenuator Item 1 When checking the TDS 540A and 544A a BNC T connector Item 6 a 5X attenu ator Item 2 and a second precision 50 Q coaxial cable Item 4 are also required Prerequisites See page 1 15 Procedure 1 Install the test hookup and preset the instrument controls a Initialize the oscilloscope Press save recall SETUP Press the main menu button Recall Factory Setup Press the side menu button OK Confirm Factory Init b Modify the initialized front panel control settings Set the horizontal SCALE for the M main time base to 20 ns Press HORIZONTAL MENU then press the main menu button Time Base Press the side menu button Delayed Only then the side menu button Delayed Triggerable Set the horizontal SCALE for the D delayed time base to 20 ns then press the side menu button Main Only Press TRIGGER MENU then press the main menu button Mode amp Holdoff
76. n off CH 1 then press CH 2 to display that channel Set the vertical SCALE to 1 V Press TRIGGER MENU m Press the main menu button Source then press the side menu button CH 3 Press SET LEVEL TO 50 m Use the vertical POSITION knob to center the display on screen b Measure logic levels m Press MEASURE then press the main menu button Select Measrmnt for Ch2 m Repeatedly press the side menu button more until High and Low appear in the side menu their icons are shown at the left Press both side menu buttons High and Low See Figure 1 22 Run 250kS s Hi Res First turn on the ETS 7 7 measurements Be ee ee IG ENN ee SE NY ae ij Select high and low Measurement Ch2 Low 160mv Second read the measurement results here GI i o0 M 200us Ch F 720mV 4of7 etic a Remove Gating Reference Measrmnt Setup Snapshot PERS Vieasrmnt OFF Histogram Levels 1 Figure 1 22 Measurement of Main Trigger Out Limits TDS 520A 524A 540A amp 544A Performance Verification 1 55 Performance Tests 1 56 c Check Main Trigger output against limits CHECK that the Ch2 High readout is 2 5 volts and that the Ch2 Low readout is lt 700 mV Press VERTICAL MENU then press the main menu button Coupling Now press the side menu button Q to toggle it to the 50 Q setting CHECK that the Ch2 High readout is 1 0 volt and that the Ch2 Low re
77. nterval and at a temperature within C of the present operating temperature If at the time you did the prerequisite Self Tests the temperature was within the limits just stated consider this prerequisite met m The Digitizing Oscilloscope must have been last adjusted at an ambient temperature between 20 C and 30 C must have been operating for a warm up period of at least 20 minutes and must be operating at an ambient temperature between 4 C and 50 C The warm up require ment is usually met in the course of meeting the first prerequisite listed above Related Information Read General Instructions and Conventions that start on page 1 1 Equipment Required These procedures use external traceable signal sources to directly check warranted characteristics The required equipment list is shown in Table 1 1 TDS 520A 524A 540A amp 544A Performance Verification 1 15 Performance Tests Item Number and Description 1 Attenuator 10X three required 2 Attenuator 5X 3 Terminator 50 Q 4 Cable Precision 50 Q Coaxial two required 5 Connector Dual Banana two required 6 Connector BNC Ga 7 Coupler Dual Input 8 Generator DC Calibration 9 Generator Cali bration 10 Generator Lev eled Sine Wave Medium Fre quency 11 Generator Lev eled Sine Wave High Frequency 12 Generator Time Mark 13 Generator Cali bration Table 1 1 Test Equipment
78. od of three 3 years from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment or c to service a product that has been modified or integrated with other products when the eff
79. on setting CH3 1 V Vert scale setting 5 Div position setting CH4 5mvV Vert scale setting 5 Div position setting CH4 5mvV Vert scale setting 5 Div position setting CH4 200 mV Vert scale setting 5 Div position setting CH4 200 mV Vert scale setting 5 Div position setting CH4 1 V Vert scale setting 5 Div position setting CH4 1 V Vert scale setting 5 Div position setting 1 20 TDS 500A Test Record Cont Certificate Number RH Technician Incoming Outgoing Maximum 11 675 V 11 525 V 108 550 V 107 450 V 1 0445 V 1 0355 V 11 675 V 11 525 V 108 550 V 107 450 V 1 0445 V 1 0355 V 11 675 V 11 525 V 108 550 V 107 450 V Performance Verification Procedures Instrument Serial Number TDS 500A Test Record Cont Certificate Number Performance Tests Temperature RH Date of Calibration Technician Performance Test Minimum Incoming Outgoing Maximum Analog Bandwidth CH1 100 mV 424 mV N A CH2 100 mV 424 mV N A CH3 100 mV 424 mV N A CH4 100 mV 424 mV N A Delay Between Channels Delay Between Channels N A 250 ps Time Base System Long Term Sample Rate Delay Time 500 ns 10 ms 2 5 Div 2 5 Div Delta Time 5 ns 100 MHz 19 760 ns 20 240 ns Trigger System Accuracy Pulse Glitch or Pulse Wid
80. ope then use the side menu to switch between trigger slopes Use the TRIGGER LEV EL knob to stabilize the trigger if required m Leave the Main trigger system triggered on the positive slope of the waveform before proceeding to the next check m Press the main menu button Source then press the side menu button more until CH 1 appears Press CH 1 4 Confirm that the Main and Delayed trigger systems are within sensitivity limits 500 MHz a Hook up the test signal source Disconnect the hookup installed in step 1 Connect through its leveling head the signal output of a high frequency leveled sine wave generator to CH 1 b Set the Main and Delayed Horizontal Scales Set the horizontal SCALE to 500 ps for the M Main time base Press HORIZONTAL MENU Now press the main menu button Time base then press the side menu button Delayed Trigger able m Press the side menu button Delayed Only Set the horizontal SCALE to 500 ps for the D Delayed time base Press the side menu button Main Only c Display the test signal Set the generator frequency to 500 MHz 1 52 Performance Verification Procedures Performance Tests Set the test signal amplitude for about five divisions on screen Now fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 500 mV Readout may fluctu ate around 500 mV Disconnect the leveling head at CH 1 and reconnect it to CH 1 through a 5X atten
81. or knob appears in boldface type press SHIFT then AC QUIRE MENU press the main menu button Coupling or verify that the status message is Pass TOP The symbol at the left is accompanied by information you must read to do the procedure properly Performance Verification Procedures Brief Procedures m Refer to Figure 1 1 Main menu refers to the menu that labels the seven menu buttons under the display side menu refers to the menu that labels 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 Position of Waveform Record Relative to General Purpose the Screen and Display Knob Readout Brief Status Information ek Gun 1004575 Sampie Trigger ievei 252mv Graticule and Waveforms Waveform Reference es aoa ete etches ata Lx eee ee i Ee EE AEREN EFES Set to TTL Symbols Ground Levels and Waveform Sources _ gt j denses haha nd Mp dante Estate g E Set to ECL Vertical Scale Horizontal Scale and Trigger Level Readouts Side menu area Readouts for measurements move here when CLEAR MENU is pressed Pop up Menu Main menu display area Readouts in lower graticule area move here when CLEAR MENU is pressed Figure 1 1 Map of Display Functions TDS 520A 524A 540A amp 544A Performance Verification 1 3 Brief Procedures Self Tests This p
82. plies with Centronics interface standard C332 44 Feb 1977 REVA optional as option 13 on TDS 520A and 540A VGA video output with levels that comply with ANSI R5343A stan dard DB 15 connector Negative TRUE High to low transition indicates the trigger occurred Either of two fuses may be used a 25 x 1 25 UL 198 6 3AG 6 A FAST 250 V or a 5 mm x 20 mm IEC 127 5A T 250 V Specifications Nominal Traits Table 2 7 Nominal Traits Mechanical Name Description Cooling Method Forced air circulation with no air filter Construction Material Chassis parts constructed of aluminum alloy front panel constructed of plastic laminate circuit boards constructed of glass laminate Cabi net is aluminum and is clad in Tektronix Blue vinyl material Finish Type Tektronix Blue vinyl clad aluminum cabinet Weight Standard TDS 524A and 544A Digitizing Oscilloscope 13 7 kg 30 lbs with front cover 25 1 kg 55 lbs when packaged for domestic shipment Standard TDS 520A and 540A Digitizing Oscilloscope 12 3 kg 27 lbs with front cover 20 0 kg 44 lbs when packaged for domestic shipment Rackmount TDS 524A and 544A Digitizing Oscilloscope 13 7 kg 30 lbs plus weight of rackmount parts for the rack mounted Digitizing Oscilloscope Option 1R Rackmount TDS 520A and 540A Digitizing Oscilloscope 12 3 kg 27 lbs plus weight of rackmount parts for the rack mounted Digitizing Oscilloscope Option 1R
83. put of DC calibration generator until it precisely overlaps the base lower level of the stored probe compensation signal This value will be near zero volts Record the setting of the DC generator d Press CLEAR MENU to remove the menus from the display See Figure 1 26 Run 250kS 5 Average oe SSSS i tomy oops Chi F 246m 25 Feb 1993 Refi 100mY 200 17 44 34 esse esle Figure 1 26 Measurement of Probe Compensator Amplitude e Check against limits Subtract the value just obtained base level from that obtained previously top level m CHECK that the difference obtained is within 495 mV to 505 mV inclusive 4 Disconnect the hookup Disconnect the cable from CH 1 1 60 Performance Verification Procedures Performance Tests Option 05 Video Equipment Required PAL signal source Item 18 60 Hz sine wave gener Trigger Checks ator Item 19 pulse generator Item 20 75 Q Cable Item 21 75 Q termina tor Item 22 50 Q cable Item 4 50 Q terminator Item 3 Check Video Trigger Prerequisites See page 1 15 These prerequisites include running the signal path compensation routine Procedure 1 Setup digitizing oscilloscope to factory defaults by completing the follow ing steps a b C Press save recall SETUP Press the main menu Recall Factory Setup Press the side menu OK Confirm Factory Init Wait for the Clock Icon to leav
84. r 8 field m PAL 625 50 2 field mono 8 field m SECAM m HDTV 787 5 60 1050 60 1125 60 1250 60 m FlexFormat user definable standards User can specify field rate number of lines sync pulse width and polarity line rate and vertical interval timing Table 2 5 Nominal Traits Display System Name Video Display Video Display Resolution Waveform Display Graticule Waveform Display Colors Grey Scale Description 7 inch diagonal with a color display area of 5 04 inches horizontally by 3 78 inches vertically 640 pixels horizontally by 480 pixels vertically Single Graticule 401 x 501 pixels 8 x 10 divisions where divisions are 1 cm by 1 cm TDS 524A and 544A Sixteen colors in infinite persistence or variable persistence display with color coding TDS 520A and 540A Sixteen levels in infinite persistence and vari able persistence display styles TDS 520A 524A 540A amp 544A Performance Verification 2 11 Nominal Traits Table 2 6 Nominal Traits Interfaces Output Ports and Power Fuse Name Interface GPIB Interface RS 232 Interface Centronics Interface Video Logic Polarity for Main and Delayed Trigger Outputs Fuse Rating 1 Each fuse type requires its own fuse cap Description GPIB interface complies with IEEE Std 488 1987 RS 232 interface complies with EIA TIA 574 talk only optional as option 13 on TDS 520A and 540A Centronics interface com
85. r on equipment CAUTION indicates a personal injury hazard not immediately accessible as one reads the marking or a hazard to property including the equip ment itself DANGER indicates a personal injury hazard immediately accessible as one reads the marking This symbol appears in manuals Static Sensitive Devices These symbols appear on equipment 4 9 A DANGER Protective ATTENTION High Voltage ground earth Refer to terminal manual TDS 620A 640A amp 644A Performance Verification Safety Summary Specific Precautions vi Observe all of these precautions to ensure your personal safety and to pre vent damage to either the digitizing oscilloscope or equipment connected to it Power Source The digitizing oscilloscope is intended to operate from a power source that will not apply more than 250 Vams between the supply conductors or between either supply conductor and ground A protective ground connection through the grounding conductor in the power cord is essential for safe system operation Grounding the Digitizing Oscilloscope The digitizing oscilloscope is grounded through the power cord To avoid electric shock plug the power cord into a properly wired receptacle where earth ground has been verified by a qualified service person Do this before making connections to the input or output terminals of the digitizing oscillo scope Without the protective ground connection all parts of the digitiz
86. rocedure uses internal routines to verify that this oscilloscope functions and was adjusted properly No test equipment or hookups are required Verify Internal Adjustment Self Compensation and Diagnostics Equipment Required None Prerequisites Power on the Digitizing Oscilloscope and allow a 20 minute warm up before doing this procedure Procedure 1 Verify that internal diagnostics pass Do the following substeps to verify passing of internal diagnostics a Display the System diagnostics menu Press SHIFT then press UTILITY Repeatedly press the main menu button System until Diag Err is highlighted in the pop up menu Run the System Diagnostics Press the main menu button Execute then press the side menu button OK Confirm Run Test Wait The internal diagnostics do an exhaustive verification of proper oscilloscope function This verification will take up to two minutes At some time during the wait a clock icon shown at left will appear on screen When the verification is finished the resulting status will appear on the screen Confirm no failures are found Verify that no failures are found and reported on screen Confirm the three adjustment sections have passed status Press SHIFT then press UTILITY m Press the main menu button System until Cal is highlighted in the pop up menu Verify that the word Pass appears in the main menu under the following menu labels Voltage Reference Frequen
87. ronix part number 070 8711 01 gives you a quick overview of how to operate your digitizing oscilloscope m The TDS 520A 524A 540A amp 544A Service Manual Tektronix part number 070 8713 01 provides information for maintaining and servicing your digitizing oscilloscope to the module level TDS 520A 524A 540A amp 544A Performance Verification i Welcome ii Welcome Table of Contents Safety SUMMAFY 5 82 es couette ele a epee tase ele a bee Di ge Performance Verification Procedures Brief Proc dures Lite habitats General Instructions Conventions soor caaan a tint menti eae ek Self Tests erous a res siennes pi us Verify Internal Adjustment Self Compensation and DIAGNOSTICS SR anaa a aa tire Functional Tests 25525 Lite dE rene een nr fee Verify All Input Channels Verify the Time Base Verify the Main and Delayed Trigger Systems Verify the File System Optional on TDS 520A and 540A Performance Tests Prer quisit s fil VR af es don ab od Aidan nh ee aes Equipment Required Test Record 24 dei kde eked eae ke Peace ketal Signal Acquisition System Checks Check Accuracy of Offset Zero Setting Check DC Gain and Voltage Measurement Accuracy Check Analog Bandwi
88. s Interfaces Output Ports and Power Requirements Name Logic Levels Main and Delayed Trigger Outputs Output Voltage and Frequency Probe Compensator Output Voltage Channel 3 Signal Out Source Voltage Source Frequency Power Consumption Description Characteristic Vout HI Vout LO Characteristic Output Voltage Frequency 20 mV division 50 Q load Ce Limits 2 5 V open circuit 1 0 V into a 50 Q load to ground lt 0 7 V into a load of lt 4 mA lt 0 25 V into a 50 Q load to ground Limits 0 5 V base top amp 50 Q load 1 kHz 1 MQ load 10 mV division amp 90 to 250 VACrms continuous range 47 Hz to 63 Hz lt 300 W 450 VA Specifications Warranted Characteristics Table 2 12 Warranted Characteristics Environmental Safety and Reliability Name Description Atmospherics Dynamics Emissions User Misuse Simulation Temperature with floppy disk optional on TDS 520A and 540A Operating 4 C to 50 C Non operating 22 C to 60 C Temperature without floppy disk Operating 0 C to 50 C Non operating 40 C to 60 C Relative humidity with floppy disk optional on TDS 520A and 540A Operating To 80 at or below 29 C Operating To 20 at or below 50 C Non operating To 90 at or below 40 C Non operating To 5 at or below 50 C Relative humidity without flopp
89. s 2 The range of waveform rates for equivalent time or interpolated waveform records 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 created 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 4 The maximum record length of 15 000 samples 50 000 samples with Option 1M is selectable with all acquisition modes except Hi Res In Hi Res the maximum record length is 5 000 samples 15 000 samples with Option 1M 2 10 Specifications Nominal Traits Table 2 4 Nominal Traits Triggering System Name Description Range Delayed Trigger Time Delay Range Events Delay Range Time for Pulse Glitch or Pulse Width Triggering Ranges Trigger Level or Threshold Video Trigger Modes of Operation Option 05 Video Trigger 16 ns to 250s 2 to 10 000 000 2nstois Source Range Any Channel a screen Auxiliary av TDS 540A amp 544A only Line V Supports the following video standards m NTSC 525 60 2 field mono o
90. s See Figure 1 11 TDS 520A 524A 540A amp 544A Performance Verification 1 37 Performance Tests m Read the measurement results at the A cursor readout not the readout on screen Run 2 00GS 5 Sample Cursor Function First display the live reference waveforms for channels Note their overlapping ground reference indicators Second identify the time reference points of those waveforms chi 100mY Third turn on the cursor and align DS EMET a 0 the V bar cursors to the time reference points Fourth read the results here Figure 1 11 Measurement of Channel Delay f Check against limits CHECK that the cursor readout on screen is lt 250 ps 3 Disconnect the hookup Disconnect the cable from the generator output at the input connectors of the channels 1 38 Performance Verification Procedures Performance Tests Time Base System These procedures check those characteristics that relate to the Main and Checks Delayed time base system and are listed as checked under Warranted Char acteristics in Section 2 Specifications Check Accuracy for Long Term Sample Rate Delay Time and Delta Time Measurements Equipment Required One time mark generator Item 12 and one precision coaxial cable Item 4 Prerequisites See page 1 15 Procedure 1 Install the test hookup and preset the instrument controls a Hook up the test signal source Conne
91. s or interpolation of points sampled on non repetitive signals Both can increase apparent sample rate on the waveform when maximum real time rates are reached The apparent sample rate can be increased even further by using the FastFrame feature Acquisition rates of 50 000 Frames Se cond are possible using FastFrameTM m Use peak detect high resolution sample envelope and average modes can be used to acquire signals m Set the acquisition to stop after a single acquisition or sequence of acquisitions if acquiring in average or envelope modes Select channel sources for compliance with limit tests You can direct the TDS to signal you or generate hard copy output based on the results Also you can create templates for use in limit tests Help and autoset can assist you in setting up the Digitizing Oscilloscope to make your measurements Help Help displays operational information about any front panel control When help mode is in effect manipulating any front panel control causes the oscillo scope to display information about that control When help is first invoked an introduction to help is displayed on screen Autoset Autoset automatically sets up the oscilloscope for a viewable display based on the input signal Once you have set up to make your measurements the cursor and measure features can help you quickly make those measurements Cursor Three types of cursors are provided for making parametric measur
92. sts This subsection contains a collection of procedures for checking that TDS 520A 524A 540A and 544A Digitizing Oscilloscopes perform as warranted Since the procedures cover models with both two full featured channels TDS 520A and 524A and four full featured models TDS 540A and 544A instructions that apply only to one of the model types are clearly identified Otherwise all test instructions apply to both the two and four channel models The procedures are arranged in four logical groupings Signal Acquisition System Checks Time Base System Checks Triggering System Checks and Output Ports Checks They check all the characteristics that are designated as checked in Section 2 Specifications The characteristics that are checked appear in boldface type under Warranted Characteristics in Section 2 These procedures extend the confidence level provided by the basic procedures described on page 1 1 The basic procedures should be done first then these procedures performed if desired Prerequisites The tests in this subsection comprise an extensive valid confirmation of performance and functionality when the following requirements are met The cabinet must be installed on the Digitizing Oscilloscope You must have performed and passed the procedures under Self Tests found on page 1 4 and those under Functional Tests found on page 1 6 m Asignal path compensation must have been done within the recom mended calibration i
93. surement displays 400ns 10 ns m Turn the HORIZONTAL SCALE knob to set the oscilloscope time base to 5 us div Turn the pulse generator PERIOD variable control to adjust the period until the oscilloscope CH1 Period measurement reads 21 000us 25 50 ns See Figure 1 41 Read note shown below NOTE The pulse duration and period adjustments are critical in making this measurement If the pulse duration and or the duty cycle are not stable the FLEXFMT function may not function You must take care when making these adjustments 1 74 Performance Verification Procedures Performance Tests Run 10 0MS s Sample Select Measurement chi Width 400ns resolution Ch1 Period 20 90us 4 Low signal Frequency amplitude Positi width lolol Negative width lot Remove alina Fig Age Reference Measrmnt Set Snapshot Measrmnt OFF sisiograml Levels 282mV Bares Chis 152mv lt morer E Figure 1 41 Sync Duty Cycle Test Critically Adjusted Pulse m Press TRIGGER MENU m Press the main menu Type pop up until you select Video If the TRIG D LED is not on check that the CH1 Width and CH1 Period measurements are adjusted correctly see note above CONFIRM that the setup is correct and the oscilloscope will trigger CONFIRM that the TRIG D LED is on and the waveform is stable m Disconnect the signal source
94. t Hookup b CHECK that the oscilloscope lights up its front panel TRIG D LED and it displays the waveform on screen See Figure 1 28 Run 250MS s Sample Main Scale 200ns Horizontal Scale Main Scale 50 Pts Div Delayed Scale 50 Pts Div 200ns eleloo 282mV amp M 200ns vid Chi 1 7 Time pase eco Horiz A Length Eka on Frame FE eee Figure 1 28 Jitter Test Displayed Waveform 1 62 Performance Verification Procedures Performance Tests CONFIRM that the TRIG D LED is lit and the waveform is dis played on screen Press SHIFT then ACQUIRE MENU 2 p Press the main menu Mode e Select the side menu Average It should be already set to 16 f Press the main menu Create Limit Test Template g Press the side menu V Limit Use the keypad to set V Limit to 100 mdiv press 100 SHIFT m then ENTER i Press the side menu OK Store Template j Press MORE k Press the main menu Ref1 Press CH1 m Press SHIFT then ACQUIRE MENU n Press the main menu Limit Test Setup o Toggle the side menu Limit Test to ON Toggle the side menu Ring Bell if Condition Met to ON Press the main menu Mode D P Press the side menu Envelope s Use the keypad to set envelope to use 100 acquisitions press 100 then ENTER t Press the main menu Stop After button u Press the side menu Single Acquisition Sequence v CONFIRM that
95. t the instrument controls a Initialize the instrument Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init b Modify the default setup Press vertical MENU m Press the main menu button Coupling then press the side me nu Q button to select 50 Q coupling Set the horizontal SCALE to 10 ns c Hook up the test signal source Connect through a 50 Q precision coaxial cable followed by a 10X attenuator the output of a medium frequency leveled sine wave generator Item 10 to CH 1 See Fig ure 1 14 Medium Frequency Sine Wave Generator 00 Ondo 00 00 0 0 0000 00000 00000 00000 Output o 30 50 Q Coaxial Cable 10X Attenuator Figure 1 14 Initial Test Hookup Performance Verification Procedures Performance Tests 2 Confirm the trigger system is within time accuracy limits for pulse glitch or pulse width triggering Horizontal Scale lt 1 us a Display the test signal Set the output of the sine wave generator for a 100 MHZ five division sine wave on screen Press SET LEVEL TO 50 b Set the trigger mode Press TRIGGER MENU Now press the main menu button Mode amp Holdoff then the side menu button Normal c Set upper and lower limits that ensures triggering Press the main menu button Type then repeatedly press the same button until Pulse is highlighted
96. ted measurements in a production or research and development environment that calls for repetitive data taking Self compensation and TDS 520A 524A 540A amp 544A Performance Verification 2 7 Specifications Display self diagnostic features built into the Digitizing Oscilloscope to aid in fault detection and servicing are also accessible using commands sent from a GPIB controller Another standard feature is hardcopy This feature allows you to output waveforms and other on screen information to a variety of graphic printers and plotters from the Digitizing Oscilloscope front panel providing hard copies without requiring you to put the Digitizing Oscilloscope into a system control ler environment You can make hardcopies in a variety of popular output formats such as PCX TIFF BMP RLE EPS Interleaf and EPS mono or color You can also save hardcopies in a disk file in any of the formats above The hardcopies obtained are based on what is displayed on screen at the time hardcopy is invoked The hardcopies can be stamped with date and time and spooled to a queue for printing at a later time You can output screen information via GPIB RS 232C or Centronics interfaces The TDS 520A 524A 540A and 544A Digitizing Oscilloscopes offer flexible display options You can customize the following attributes of your display Color Waveforms readouts graticule etc on the TDS 524A and 544A m Intensity waveforms readouts and graticu
97. tes None Procedure 1 Install the test hookup and preset the oscilloscope controls a Hook up the signal source Install the probe on CH 1 Connect the probe tip to PROBE COMPENSATION SIGNAL on the front panel connect the probe ground to PROBE COMPENSATION GND See Figure 1 3 on page 1 6 Insert the test disk Insert the disk in the disk drive to the left of the monitor Position the disk so the metal shutter faces the drive Position the disk so the stamped arrow is on the top right side In other words place the angled corner in the front bottom location Push the disk into the drive until it goes all the way in and clicks into place Initialize the oscilloscope m Press save recall SETUP m Press the main menu button Recall Factory Setup m Press the side menu button OK Confirm Factory Init Modify default settings m Press AUTOSET to obtain a viewable triggered display Set the horizontal SCALE for the M main time base to 200 us one click clockwise Notice the waveform on the display now shows two cycles instead of five m Press CLEAR MENU to remove the menus from the screen Save the settings Press SETUP m Press the main menu button Save Current Setup then press the side menu button To File Turn the general purpose knob to select the file to save Choose TEK SET or fdo With this choice you ll save a file starting with TEK then containing 5 numbers and a SET exten sio
98. th Hor scale lt 1 us Lower Limit 2 5 ns 7 5 ns Upper Limit 2 5 ns 7 5 ns Pulse Glitch or Pulse Width Hor scale gt 1 us Lower Limit 1 us 3 us Upper Limit 1 us 3 us Main Trigger DC Coupled 9 940 V 10 060 V Delayed Trigger DC Coupled 9 940 V 10 060 V Output Signal Checks MAIN TRIGGER OUTPUT 1 MQ High gt 2 5 V Low lt 0 7 V MAIN TRIGGER OUTPUT 50 Q High 1 0 V Low lt 0 25 V DELAYED TRIGGER OUTPUT 50 Q High gt 1 0 V Low lt 0 25 V DELAYED TRIGGER OUTPUT 1 MQ High 2 5 V Low lt 0 7 V CH 3 SIGNAL OUTPUT 1 MQ Pk Pk gt 90 mV Pk Pk lt 110 mV CH 3 SIGNAL OUTPUT 50 Q Pk Pk gt 45 mV Pk Pk lt 55 mV TDS 520A 524A 540A amp 544A Performance Verification 1 21 Performance Tests Instrument Serial Number Temperature Date of Calibration _ SS Performance Test Frequency CH1 Freq Voltage difference 1 22 TDS 500A Test Record Cont Certificate Number RH Minimum Incoming Outgoing Maximum Probe Compensator Output Signal 950 Hz 1050 Hz 495 mV 505 mV Performance Verification Procedures Technician S Performance Tests Signal Acquisition These procedures check those characteristics that relate to the signal acqui System Checks sition system and are listed as checked under Warranted Characteristics in y Section 2 Specifications Check Accuracy of Offset Zero Setting Equipment Required None Prerequisites The oscilloscope must meet the prerequis
99. the Standard pop up to select FlexFmt Trigger Type should already be set to Video m Press the main menu Setup TDS 520A 524A 540A amp 544A Performance Verification 1 71 Performance Tests 1 72 Press the side menu Field Rate Use the keypad to set the field rate to 60 05 Hz press 60 05 then ENTER Press the side menu Lines Use the keypad to set the field rate to 793 lines press 793 then ENTER Press the side menu Fields Use the keypad to set the number of fields to 1 press 1 then ENTER Press the side menu Sync Width Use the keypad to set the width to 400 ns press 400 SHIFT n then ENTER Press the side menu more 1 of 2 Then press V1 Start Time Use the keypad to set V1 start time to 10 10 us press 10 10 SHIFT p then ENTER Press the side menu V1 Stop Time Use the keypad to set V1 stop time to 10 50 us press 10 50 SHIFT p then ENTER Press the main menu Type pop up to select Edge Press HORIZONTAL MENU Press the main menu Record Length Select the side menu 1000 points in 20div if needed first press the side menu more 2 of 2 Turn the HORIZONTAL POSITION knob to position the trigger T two divisions to the left of the center screen Press MEASURE If needed press the main menu Select Measrmnt Press the side menu Negative Width Press the side menu Period Setup the pulse generator PG502 for Sync Duty Cycle Test Set PULSE DURATION to 50 ns Set
100. the channel selected Set its input impedance Press VERTICAL MENU then press the main menu button Coupling m Press the side menu Q button to toggle it to the 50 Q setting Set the vertical scale Set the vertical SCALE to one of the settings listed in Table 1 5 not yet checked Start with the 100 mV setting Table 1 5 Analog Bandwidth Reference Amplitude Horizontal Test at 6 MHz Scale Frequency Limits 600 mV 6 divisions 1 ns 500 MHz gt 424 mV 5 V 5 divisions 1 ns 500 MHz 2 gt 3 535 V 3 V 6 divisions ins 500 MHz 22 121 V 1 2 V 6 divisions 1 ns 500 MHz 848 mV 300 mV 6 divisions ins 500 MHz gt 212 mV 120 mV 6 divisions 1 ns 500 MHz 84 mV 60 mV 6 divisions 1 ns 500 MHz gt 42 mV 30 mV 6 divisions 1 ns 500 MHz gt 21 mV 12 mV 6 divisions 2 ns 350 MHz 8 48 mV TDS 520A 524A 540A amp 544A Performance Verification 1 33 Performance Tests e Display the test signal Do the following subparts to first display the reference signal and then the test signal Press MEASURE then press the main menu button Select Measrmnt for CHx Now press the side menu button more until the menu label Pk Pk appears in the side menu its icon is shown at the left Press the side menu button Pk Pk Press CLEAR MENU Set the generator output so the CHx Pk Pk readout equals the reference amplitude in Table 1 5 that corresponds to the vertical scale set in substep d Press the front panel button SET LEV
101. tion for Channel Delay Test Signal Interconnec tion Various Accuracy Tests Checking Trigger Sensitivity Checking Delay Between Channels Checking DC Offset Gain and Measure ment Accuracy To check accuracy of the CH 3 Signal Out TDS 540A and 544A only Checking Trigger Sensitivity at low fre quencies Checking Analog Bandwidth and Trig ger Sensitivity at high frequencies Checking Sample Rate and Delay time Accuracy Use to check accu racy of the CH 3 Output Performance Verification Procedures Item Number and Description 14 Probe 10X in cluded with this instrument 15 Adapter BNC female to Clip Leads 16 Power Supply Dual Output 17 3 5inch 720 K or 1 44 Mbyte DOS compatible floppy disk 18 Generator Video Signal 19 Oscillator Lev eled Sinewave Generator 20 Pulse Generator 21 Cable 750 Coaxial 22 Termination 75Q TDS 520A 524A 540A amp 544A Performance Verification Table 1 1 Test Equipment Cont Minimum Requirements A P6139A probe BNC female to Clip Leads 0 35 V and 60 V 2A current limit without foldback Provides NTSC compatible outputs 60 Hz Sine Wave 75 Q 36 inch male to male BNC connectors Impedance 75 Q connectors female BNC input male BNC output Example Tektronix number P6139A Tektronix part number 013 0076 00 Tektronix PS 280 Power Supply Programming Examples Soft ware Disk Tektronix part n
102. tput to O V Press WAVEFORM OFF to remove the channel just confirmed from the display Press the front panel button that corresponds to the next channel you are to confirm m Move the test hook up to the channel you select b Display the test signal Press VERTICAL MENU Press the main menu button Position m Use the keypad to set vertical position to 2 5 divisions press 2 5 then ENTER on the keypad c Measure the test signal m Press CURSOR Use the general purpose knob to precisely align the active cursor to the DC baseline level on screen Set the generator output to 500 mV m Press SELECT Use the general purpose knob to precisely align the alternate cursor to the 500 mV DC test level on screen Press CLEAR MENU Read the measurement results from the delta AA readout not the absolute readout See Figure 1 6 on page 1 28 d Check against limits CHECK that the A readout on screen is within 485 mV to 515 mV see Figure 1 6 TDS 520A 524A 540A amp 544A Performance VerifidatidALy 93 1 27 Performance Tests Run 100kS 5 Average First align a cursor to the DC baseline no input Second align the second cursor to the DC test level that you input Third read the results of the ADC Deets ewer cose measurement here Hs dd ae 993 CSSS Figure 1 6 Measurement of the DC Accuracy for Delta Measurements e Test all channels Repeat subst
103. trigger system This type of triggering can be based on pattern asynchronous or state synchronous In either case logic triggering is configurable for sources for boolean operators to apply to those sources for logic pattern or state on which to trigger for mode auto or normal and for holdoff Time qualified logic triggering can also be specified Pulse main trigger system Pulse triggering is configurable for triggering on runt or glitch pulses or on pulse widths or periods inside or outside limits that you specify It is also configurable for source polarity mode and holdoff Video with option 05 Video Trigger Video triggering is compatible with standard NTSC PAL SECAM and HDTV formats An additional feature called FlexFormat flexible format allows the user to define the video format on which to trigger You can choose where the trigger point is located within the acquired wave form record by selecting the amount of pretrigger data displayed Select presets of 10 50 and 90 of pretrigger data in the horizontal menu or assign the general purpose knob to set pretrigger data to any value within the limits of trigger position resolution TDS 520A 524A 540A amp 544A Performance Verification 2 5 Specifications Acquisition Control On Board User Assistance Measurement Assistance You can specify a mode and manner to acquire and process signals Select equivalent time sampling on repetitive signal
104. u Press SHIFT then press DELAYED TRIG m Press the main menu button Level then press the side menu button Level c Confirm that the following statements are true m The trigger level readout for the delayed trigger system changes as you turn the general purpose knob m The general purpose knob can trigger and untrigger the square wave probe compensation signal as you rotate it Leave the signal untriggered m Pressing the side menu button Set to 50 triggers the probe compensation signal that you just left untriggered Leave the signal triggered d Verify the delayed trigger counter m Press the main menu button Delay by Time m Use the keypad to enter a delay time of 1 second press 1 then press ENTER Verify that the trigger READY indicator on the front panel flashes about once every second as the waveform is updated on screen 4 Remove the test hookup Disconnect the standard accessory probe from the channel input and the probe compensation terminals TDS 520A 524A 540A amp 544A Performance Verification 1 11 Brief Procedures Verify the File System Optional on TDS 520A and 540A Equipment Required One P6139A probe and one 720 K or 1 44 Mbyte 3 5 inch DOS compatible disk You can use a disk of your own or you can use the Programming Examples Software 3 5 inch disk Tektronix part number 063 1134 00 contained in the TDS Family Programmer Manual Tektronix part number 070 8709 01 Prerequisi
105. uator d Repeat step 2 substeps b and c only since only the 500 MHz fre quency is to be checked here 5 Confirm that the Main and Delayed trigger systems couple trigger signals from all channels Doing the procedure Check Analog Bandwidth which begins on page 1 32 checks coupling If you have not done that proce dure do so after finishing this procedure See the following note NOTE Steps 1 through 4 confirmed trigger sensitivity for the Main and Delayed triggering systems using the CH 1 input Doing the proce dure Check Analog Bandwidth ensures that trigger signals are coupled from all four channels When checking delayed triggering sensitivity at 500 MHz the waveform record may have some missing interpolated record points The waveform is still stably triggered See definition of a stable trigger earlier in this procedure 6 Disconnect the hookup Disconnect the cable from the generator output at the input connector of the channel last tested TDS 520A 524A 540A amp 544A Performance Verification 1 53 Performance Tests Output Signal Checks The procedure that follows checks those characteristics of the output signals that are listed as checked under Warranted Characteristics in Section 2 Specifications The oscilloscope outputs these signals at its front and rear panels Check Outputs CH 3 and Main and Delayed Trigger TDS 540A and 544A only Equipment Required Two 50 precision cables Item 4 and on
106. um ber 063 1134 00 that comes with the TDS Family Program mer Manual Tektronix part number 070 8709 01 Tektronix TSG 121 Tektronix part number SG 502 Tektronix part number PG 502 Tektronix part number 012 1338 00 Tektronix part number 011 0102 01 Performance Tests Purpose Signal Interconnec tion Signal Coupling for Probe Compensator Output Check Power Supply Troubleshooting Checking File Sys tem Basic Function ality Used to Test Video Option 05 Equipped Instruments Only Used to Test Video Option 05 Equipped Instruments Only Used to Test Video Option 05 Equipped Instruments Only Used to Test Video Option 05 Equipped Instruments Only Used to Test Video Option 05 Equipped Instruments Only 1 17 Performance Tests 1 18 Performance Verification Procedures Instrument Serial Number Performance Tests Test Record Photocopy the next four pages and use them to record the performance test results for your instrument TDS 500A Test Record Certificate Number Temperature RH Date of Calibration Technician Performance Test Minimum Incoming Outgoing Maximum Offset Accuracy CH1 Offset 1 mV 1 6 mV 1 6 mV 100 mV 25 mV 25 mV 1 V 250 mV 250 mV CH2 Offset 1 mV 1 6 mV 1 6 mV 100 mV 25 mV 25 mV 1 V 250 mV 250 mV CH3 Offset 1 mV 1 6 mV 1 6 mV 100 mV 25 mV 2
107. urrent vertical scale setting Repeat substeps b through f until all vertical scale settings set tings listed in Table 1 2 are checked for the channel under test Test all channels Repeat substeps a through f for all input channels 3 Disconnect the hookup No hookup was required Performance Verification Procedures Performance Tests Run 50 0kS s Hi Res A 3 10mY Ignore the 100pV inactive cursor Align the active cursor to the DC baseline no input A SSSS Then read the offset relative to ground reference l chi Toom Toms chi 7 o 17 Feb 1993 elella Figure 1 4 Measurement of DC Offset Accuracy at Zero Setting Check DC Gain and Voltage Measurement Accuracy Performance of this procedure requires input voltages up to 130 VDC 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 Two dual banana connectors Item 5 one BNC T connector Item 6 one DC calibration generator Item 8 and two precision coaxial cables Item 4 Prerequisites The oscilloscope must meet the prerequisites listed on page 1 15 TDS 520A 524A 540A amp 544A Performance Verification 1 25 Performance Tests 1 26 Procedure 1 Install the test hookup and preset the instrument controls see Fig ure 1 5 Dual Banana to BNC
108. wise noted Table 2 8 Warranted Characteristics Signal Acquisition System Name Description Accuracy DC Gain For all sensitivities from 1 mV div to 10 V div with offsets from 0 V to a Accuracy Offset Volis Div Setting Offset Accuracy TDS 540A and 544A all channels coat TDS 520A and 524A CH1 and CH2 MV div 99 5 mV div Accuracy Offset TDS 520A and 524A AUX1 and AUX2 x Net Offset 1 5 mV 1 div x volts div setting x Net Offset 15 mV 1 div x volts div setting x Net Offset 150 mV 0 1 div x volts div setting 100 mV div 995 mV div of of 1 V div 10 V div Offset Accuracy g x Net Offset 0 1 div x volts div setting TDS 520A 524A 540A amp 544A Performance Verification 2 15 Warranted Characteristics Table 2 8 Warranted Characteristics Signal Acquisition System Cont Name Description Analog Bandwidth DC 50 Q Coupled Volts Div Bandwidth4 or DC 1 MQ Coupled 5 mV div 10 V div DC 500 MHz 2 mV div 4 98 mV div DC 350 MHz 1 mV div 1 99 mV div DC 250 MHz Cross Talk Channel Isolation Input Impedance DC 1 MQ Coupled Input Impedance DC 50 Q Coupled Input Voltage Maximum DC 1 MQ AC 1 MQ or GND Coupled Input Voltage Maximum DC 50 Q or AC 50 Q Coupled Lower Frequency Limit AC Coupled 100 1 at 100 MHz and 30 1 at the derated bandwidth for any two
109. y decrease the the Upper Limit readout until triggering is lost m CHECK that the Upper Limit readout is within 1 us to 3 us inclusive 4 Disconnect the hookup Disconnect the cable from the generator output at the input connector of CH 1 Check Accuracy Trigger level or Threshold DC Coupled Equipment Required One DC calibration generator Item 8 one BNC T connector Item 6 and two precision 50 Q coaxial cables Item 4 Prerequisites The oscilloscope must meet the prerequisites listed on page 1 15 Procedure 1 Install the test hookup and preset the instrument controls a Hook up the test signal source Set the output of a DC calibration generator to 0 volts Connect the output of a DC calibration generator through a dual banana connector followed by a 50 Q precision coaxial cable to one side of a BNC T connector See Figure 1 16 Connect the Sense output of the generator through a second dual banana connector followed by a 50 Q precision coaxial cable to other side of the BNC T connector Now connect the BNC T connector to CH 1 See Figure 1 16 DC Calibrator Sense Output Dual Banana to BNC Adapter 500 Coaxial Cables BNC T Connector Figure 1 16 Initial Test Hookup TDS 520A 524A 540A amp 544A Performance Verification 1 45 Performance Tests b Initialize the oscilloscope Press save recall Setup Press the main menu button Recall Factory Setup
110. y disk To 95 at or below 40 C To 75 from 41 C to 55 C Altitude To 4570 m 15 000 ft operating To 12190 m 40 000 ft non operating Random vibration without floppy disk installed 0 31 g Rms from 5 to 500 Hz 10 minutes each axis operating 3 07 g Rus from 5 to 500 Hz 10 minutes each axis non operat ing Meets or exceeds the requirements of the following standards Vig 243 1991 Amended per Vfg 46 1992 FCC Code of Federal Regulations 47 CFR Part 15 Subpart B Class A Electrostatic Discharge Susceptibility Up to 8 kV with no change to control settings or impairment of normal operation up to 15 kV with no damage that prevents recovery of normal operation by the user TDS 520A 524A 540A amp 544A Performance Verification 2 19 Warranted Characteristics 2 20 Specifications Typical Characteristics The tables in this subsection list the typical characteristics that describe the TDS 520A 524A 540A and 544A Digitizing Oscilloscopes Typical characteristics are described in terms of typical or average performance Typical characteristics are not warranted Table 2 13 Typical Characteristics Signal Acquisition System Name Accuracy Delta Time Measurement Delay Between Channels Full Band width Equivalent Time Frequency Limit Upper 100 MHz Bandwidth Limited Frequency Limit Upper 20 MHz Bandwidth Limited Calculated Rise Time Nonlinearity Description For single shot
111. y limits 50 MHz a Display the test signal m Set the generator frequency to 50 MHz Press MEASURE TDS 520A 524A 540A amp 544A Performance Verification 1 49 Performance Tests 1 50 Press the main menu button High Low Setup then press the side menu button Min Max Press the main menu button Select Measrmnt for Ch1 Press the side menu button more until Amplitude appears in the side menu its icon is shown at the left Press the side menu button Amplitude Press SET LEVEL TO 50 Press CLEAR MENU Set the test signal amplitude for about three divisions on screen Now fine adjust the generator output until the CH 1 Amplitude readout indicates the amplitude is 350 mV Readout may fluctu ate around 350 mV Disconnect the 50 Q precision coaxial cable at CH 1 and recon nect it to CH 1 through a 10X attenuator Check for Main trigger system for stable triggering at limits Read the following definition A stable trigger is one that is con sistent that is one that results in a uniform regular display triggered on the selected slope positive or negative This display should not have its trigger point switching between opposite slopes nor should it roll across the screen At horizontal scale settings of 2 ms division and faster TRIG D will remain constantly lit It will flash for slower settings Press TRIGGER MENU then press the main menu button Slope Press SET LEVEL TO 50 CHECK that a sta

Tektronix TDS544A User's Manual

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