Tektronix TDS 520B Technical Reference
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Tektronix TDS 520B Technical Reference

Tektronix TDS 520B Technical Reference

Digitizing
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Technical Reference
TDS 520B, TDS 540B, TDS 620B, TDS 644B,
TDS 680B, TDS 684B, TDS 724A, TDS 744A,
& TDS 784A
Digitizing Oscilloscopes
Performance Verification and Specifications
070-9384-01

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  • Page 1 Technical Reference TDS 520B, TDS 540B, TDS 620B, TDS 644B, TDS 680B, TDS 684B, TDS 724A, TDS 744A, & TDS 784A Digitizing Oscilloscopes Performance Verification and Specifications 070-9384-01...
  • Page 2 Copyright Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. Tektronix, Inc., P.O. Box 1000, Wilsonville, OR 97070–1000...
  • Page 3 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.

  • Page 5: Table Of Contents

    Table of Contents General Safety Summary ........Preface .
  • Page 6 Table of Contents TDS Family Performance Verification and Specifications...

  • Page 7: General Safety Summary

    General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use the product only as specified. Only qualified personnel should perform service procedures. While using this product, you may need to access other parts of the system.

  • Page 8: Safety Terms And Symbols

    General Safety Summary Product Damage Precautions Use Proper Power Source Do not operate this product from a power source that applies more than the voltage specified. Provide Proper Ventilation To prevent product overheating, provide proper ventilation. Do Not Operate With If you suspect there is damage to this product, have it inspected by qualified Suspected Failures service personnel.

  • Page 9: Certifications And Compliances

    General Safety Summary Symbols on the Product The following symbols may appear on the product: Double DANGER Protective Ground ATTENTION Insulated High Voltage (Earth) Terminal Refer to Manual Certifications and Compliances CSA Certified Power CSA Certification includes the products and power cords appropriate for use in Cords the North America power network.
  • Page 10 General Safety Summary TDS Family Performance Verification and Specifications...

  • Page 11: Related Manuals

    The following documents are related to the use or service of the digitizing oscilloscope: The TDS 520B, 540B, 620B, 644B, 680B, 684B, 724A, 744A, & 784A User Manual (Tektronix part number 070-9383-XX). The TDS Family Programmer Manual (Tektronix part number 070-9556-XX) describes using a computer to control the digitizing oscillo- scope through the GPIB interface.
  • Page 12 Preface viii TDS Family Performance Verification and Specifications...
  • Page 13 Performance Verification Procedures...
  • Page 15 If you are not familiar with operating this oscilloscope, read the TDS 520B, 540B, 620B, 644B, 680B, 684B, 724A, 744A, & 784A Reference (070-9382-XX) or the TDS 520B, 540B, 620B, 644B, 680B, 684B, 744A, & 784A User Manual (070-9383-XX). These contain instructions that will acquaint you with the use of the front-panel controls and the menu system.

  • Page 16: Conventions

    Performance Verification 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.
  • Page 17 Performance Verification Procedures 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 General purpose record relative to knob readout the screen and display Brief status information Side menu area.
  • Page 18 Performance Verification Procedures 1–4 TDS Family Performance Verification and Specifications...

  • Page 19: Brief Procedures

    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. A probe, such as the P6243 or P6245, is required to do these test procedures.
  • Page 20 Brief Procedures e. Confirm the three adjustment sections have passed status: Press SHIFT; then press UTILITY. Highlight Cal in the pop-up menu by repeatedly pressing the main-menu button System. See Figure 1–2. Verify that the word Pass appears in the main menu under the following menu labels: Voltage Reference, Frequency Response, and Pulse Trigger.

  • Page 21: Functional Tests

    Brief Procedures 2. Return to regular service: Press CLEAR MENU to exit the system menus. Functional Tests The purpose of these procedures is to confirm that the 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.
  • Page 22 Brief Procedures Verify All Input Channels Equipment One probe such as the P6243, P6245 or P6139A Required Prerequisites None 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;...
  • Page 23 Press the main-menu button Source. Press the side-menu button that corresponds to the channel selected (Ch2, Ch3, or Ch4. On the TDS 520B, 620B, 680B, and 724A use Ax1 and Ax2 instead of Ch3 and Ch4). c. Set up the selected channel: Set the vertical SCALE to 200 mV.
  • Page 24 Brief Procedures Sample mode displays an actively acquiring waveform on-screen. (Note that there is noise present on the peaks of the square wave.) Peak Detect mode displays an actively acquiring waveform on-screen with the noise present in Sample mode “peak detected.” Hi Res mode (TDS 500B and 700A only) displays an actively acquiring waveform on-screen with the noise that was present in Sample mode reduced.
  • Page 25 Brief Procedures a. One period of the square-wave probe-compensation signal is about five horizontal divisions on-screen for the 200 s horizontal scale setting (set in step 1c). b. Rotating the horizontal SCALE knob clockwise expands the waveform on-screen (more horizontal divisions per waveform period), counter- clockwise rotation contracts it, and returning the horizontal scale to 200 s returns the period to about five divisions.
  • Page 26 Brief Procedures 2. Verify that the main trigger system operates: Confirm that the following statements are true. 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.
  • Page 27 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-XX) contained in the TDS Family Programmer Manual (Tektronix part number 070-9556-XX).
  • Page 28 Brief Procedures e. Save the settings: Press SETUP. 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 ). With this choice, you will save a file starting with , then containing 5-numbers, and a extension.

  • Page 29: Performance Tests

    Performance Tests This section contains a collection of procedures for checking that the TDS 500B, 600B, and 700A Digitizing Oscilloscopes perform as warranted. The procedures are arranged in four logical groupings: Signal Acquisition System Checks, Time Base System Checks, Triggering System Checks, and Output Ports Checks.

  • Page 30: Equipment Required

    Wavetek 9100 with options Checking Sample-Rate and to 10 ns; accuracy within 2 ppm 100 and 250 (or, optionally, Delay-time Accuracy Tektronix TG 501A Time Mark Generator 12. Probe, 10X A P6139A, P6243, or P6245 probe Tektronix part number Signal Interconnection P6139A or P6245 13.
  • Page 31 To make measurements beyond 8 V, use either the P6139A probe (good to 500 V), or refer to the catalog for a recom- mended probe. You can replace items 19, 20, or 21 with a Tektronix SG503 (item 25) or SG504 (item 26) – if available. 1–17...
  • Page 32 Performance Tests 1–18 TDS Family Performance Verification and Specifications...

  • Page 33: Tds 600B Test Record

    Performance Tests TDS 600B Test Record Photocopy this and the next three pages and use them to record the performance test results for your TDS 600B. TDS 600B Test Record Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 600B Performance Test Minimum...
  • Page 34 Performance Tests TDS 600B Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 600B Performance Test Minimum Incoming Outgoing Maximum 200 mV Vert scale setting, – 11.786 V __________ __________ – 11.420 V +5 Div position setting, –10 V offset 1 V Vert scale setting, + 17.26 V...
  • Page 35 Performance Tests TDS 600B Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 600B Performance Test Minimum Incoming Outgoing Maximum Delay Between Channels Delay Between Channels __________ __________ 100 ps Time Base System Long Term Sample Rate/ Delay Time @ 500 ns/10 ms –2.0 Div...
  • Page 36 Performance Tests TDS 600B Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 600B Performance Test Minimum Incoming Outgoing Maximum CH 3 or AX1 SIGNAL OUTPUT, 1 M Pk-Pk 80 mV __________ __________ Pk-Pk 120 mV CH 3 or AX1 SIGNAL OUTPUT, 50 Pk-Pk 40 mV...

  • Page 37: Tds 500B/700A Test Record

    Performance Tests TDS 500B/700A Test Record Photocopy this and the next three pages and use them to record the performance test results for your TDS 500B/700A. TDS 500B/700A Test Record Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 500B/700A Performance Test Minimum...
  • Page 38 Performance Tests TDS 500B/700A Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 500B/700A Performance Test Minimum Incoming Outgoing Maximum 200 mV Vert scale setting, – 11.6615 V __________ __________ – 11.5385 V +5 Div position setting, –10 V offset 1 V Vert scale setting, + 17.7785 V...
  • Page 39 Performance Tests TDS 500B/700A Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 500B/700A Performance Test Minimum Incoming Outgoing Maximum Delay Between Channels Delay Between Channels __________ __________ 50 ps Time Base System Long Term Sample Rate/ Delay Time @ 100 ns/10.0 ms –2.5 Div...
  • Page 40 Performance Tests TDS 500B/700A Test Record (Cont.) Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: TDS 500B/700A Performance Test Minimum Incoming Outgoing Maximum CH 3 or AX 1 SIGNAL OUTPUT, 1 M Pk-Pk 88 mV __________ __________ Pk-Pk 132 mV CH 3 or AX 1 SIGNAL OUTPUT, 50...

  • Page 41: Signal Acquisition System Checks

    Performance Tests Signal Acquisition System Checks These procedures check those characteristics that relate to the signal-acquisition system and are listed as checked under Warranted Characteristics in Specifica- tions. Check Offset Accuracy Equipment None (Zero Setting) Required Prerequisites The oscilloscope must meet the prerequisites listed on page 1–15 1.
  • Page 42 Performance Tests b. 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.) Press VERTICAL MENU. Press the main-menu button Fine Scale. Use the keypad to enter the vertical scale.
  • Page 43 Performance Tests Read the measurement results. Align the active cursor over the waveform. Figure 1–4: Measurement of DC Offset Accuracy at Zero Setting g. Test all channels: Repeat substeps a through f for all input channels. 3. Disconnect the hookup: No hookup was required. Check DC Voltage Measurement Accuracy WARNING.
  • Page 44 Performance Tests 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 precision coaxial cable to one side of a BNC T connector.
  • Page 45 Performance Tests a. Select an unchecked channel: Press WAVEFORM OFF to remove the channel just confirmed from the display. Press the front-panel button that corresponds to the channel you are to confirm. Set the generator output to 0 V. Move the test hookup to the channel you selected. b.
  • Page 46 Performance Tests Use the keypad to set vertical offset to the positive-polarity setting listed in the table for the current vertical scale setting. The baseline level will remain off screen. Set the generator to the level and polarity indicated in the table for the vertical scale, position, and offset settings you have made.
  • Page 47 Performance Tests Repeat substeps c through f until all vertical scale settings, listed in Table 1–3, are checked for the channel under test. g. Test all channels: Repeat substeps a through f for all four channels. 3. Disconnect the hookup: a.
  • Page 48 10 MHz or less. See Figure 1–7. For the optional setup using a leveled sine wave generator with a leveling head (item 26) see Figure 1–8 and, if using this optional setup with the example Tektronix SG 504, set the generator output to 6 MHz. Sine Wave Digitizing Oscilloscope...
  • Page 49 Set the vertical scale: Set the vertical SCALE to one of the settings listed in Table 1–4 not yet checked. (Start with the 100 mV setting.) Table 1–4: Analog Bandwidth TDS 680B, TDS 620B TDS 520B, 684B, and and 644B 540B, 724A, Horizontal...
  • Page 50 Press the front-panel button SET LEVEL TO 50% as necessary to trigger a stable display. At full bandwidth, which for the TDS 680B, TDS 684B, and TDS 784A equals 1 GHz and for the TDS 520B, 540B, 620B, TDS 644B, 724A, and TDS 744A equals 500 MHz frequency, you may also want to make small, manual adjustments to the trigger level.
  • Page 51 Performance Tests Read results. Set the generator (reference) frequency to the test frequency from Table 1–4. Set the horizontal scale from Table 1–4. Figure 1–9: Measurement of Analog Bandwidth g. Check against limits: CHECK that the Pk-Pk readout on screen is within the limits listed in Table 1–4 for the current vertical scale setting.
  • Page 52 Performance Tests 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.
  • Page 53 TO 50% frequently to speed up the updating of the waveform amplitude on screen. b. The horizontal SCALE should already be set to 500 ps. On the TDS 784A and TDS 600B, now set it to 200 ps. On the TDS 520B, 540B, 1–39 TDS Family Performance Verification and Specifications...
  • Page 54 Save Wfm; then press the side-menu button To Ref 2. d. Save CH 3 (AX1 on the TDS 520B, 620B, 680B, and 724A) waveform: Move the coupler from CH 2 to CH 3, so that CH 1 and CH 3 are driven.
  • Page 55 Use the cursors to measure the skew from CH1 to CH2, CH1 to CH3, and CH1 to CH4 (on the TDS 520B, 620B, 680B, and 724A use AX1 and AX2 instead of CH3 and CH4). Write down these three numbers in the first measurement column of Table 1–5.
  • Page 56 Add the first CH1 to CH2 skew measurement to the second CH1 to CH2 skew measurement and divide the result by 2. Use Table 1–5. m. Add the first CH1 to CH3 (AX1 on the TDS 520B, 620B, 680B, and 724A) skew measurement to the second CH1 to CH3 skew measurement and divide the result by 2.

  • Page 57: Time Base System Checks

    Init. c. Modify the initialized front-panel control settings: Set the vertical SCALE to 200 mV (or 500 mV with the optional Tektronix TG 501A Time Mark Generator) Press VERTICAL MENU; then press the main-menu button Coupling. Press the side-menu button to toggle it to the 50 setting.
  • Page 58 Performance Tests Use the vertical POSITION knob to center the test signal on screen. Set the horizontal SCALE of the Main time base to 1 ms. Press TRIGGER MENU; then press the main-menu button Mode & Holdoff. Press the side-menu button Normal. 2.

  • Page 59: Trigger System Checks

    Performance Tests Align the trigger T to the center graticule line. horizontal mode. Check long–term sample Set horizontal scale rates and delay time and delayed time. accuracies against limits. Figure 1–13: Measurement of Accuracy — Long-Term and Delay Time 3. Disconnect the hookup: Disconnect the cable from the generator output at the input connector of CH 1.
  • Page 60 Performance Tests 1. Install the test hookup and preset the instrument controls: a. Initialize the instrument: Press save/recall SETUP. Press the main-menu button Recall Factory Setup. Press the side-menu button OK Confirm Factory Init. b. Modify the default setup: Press VERTICAL MENU. Press the main-menu button Coupling;...
  • Page 61 Performance Tests b. Set the trigger mode: Press TRIGGER MENU. Now press the main-menu button Mode & Holdoff; then press the side-menu button Normal. c. Set upper and lower limits that ensure triggering: See Figure 1–15. Press the main-menu button Type; then repeatedly press the same button until Pulse is highlighted in the menu that pops up.
  • Page 62 Performance Tests Set upper and lower limits that ensure triggering. Then change limits until triggering stops. 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 >1 s): a.
  • Page 63 Performance Tests CHECK that the Lower Limit readout, after the oscilloscope stops triggering, is within 1.9 s to 2.1 s, inclusive. Enter time on test record. Use the keypad to return the Lower Limit to 500 ns and reestablish triggering. Press the side-menu button Upper Limit;...
  • Page 64 Performance Tests Connect the output of the DC calibration generator, through a dual-banana connector followed by a 50 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 precision coaxial cable, to other side of the BNC T connector.
  • Page 65 Performance Tests c. Read results (Check against limits): See Figure 1–17. CHECK that the Level readout in the main menu is within 9.863 V to 10.137 V, inclusive, for the TDS 600B or is within 9.9393 V to 10.1147 V, inclusive, for the TDS 500B/700A. Enter voltage on test record.
  • Page 66 Performance Tests Press HORIZONTAL MENU. Press the main-menu button Time Base. Press the side-menu buttons Delayed Only and Delayed Trigger- able. Set D (delayed) horizontal SCALE to 500 s. b. Select the Delayed trigger system: Press SHIFT; then press the front-panel DELAYED TRIG button. Press the main-menu button Level.
  • Page 67 Performance Tests Sensitivity, Edge Trigger, Equipment One sine wave generator (Item 19 or, optionally, items 25 and 26) Required DC Coupled Two precision 50 coaxial cables (Item 5) One 10X attenuator (Item 1) One BNC T connector (Item 7) One 5X attenuator (Item 2) Prerequisites See page 1–15.
  • Page 68 Performance Tests Sine Wave To AUX TRIG INPUT Generator on Rear Panel Digitizing Oscilloscope Figure 1–18: Initial Test Hookup 2. Confirm Main and Delayed trigger systems are within sensitivity limits (50 MHz): a. Display the test signal: Set the generator frequency to 50 MHz. Press MEASURE.
  • Page 69 Performance Tests 2 ms/division and faster, TRIG’D will remain constantly lighted. It will flash for slower settings. Press TRIGGER MENU; then press the main-menu button Slope. Press SET LEVEL TO 50%. Adjust the TRIGGER LEVEL knob so that the TRIG’D light is on. Set the level to near the middle of the range where the TRIG’D light is on.
  • Page 70 Performance Tests Press SHIFT; then press DELAYED TRIG. Press the main-menu button Level. 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 TRIGGER LEVEL knob to stabilize the Main trigger.
  • Page 71 Performance Tests Leave the Main trigger system triggered on the positive slope of the waveform before proceeding to the next check. 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 (full bandwidth, for TDS 680B, 684B, &...

  • Page 72: Output Signal Checks

    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 Specifications. The oscilloscope outputs these signals at its front and rear panels. Check Outputs — CH 3 Equipment Two 50 precision cables (Item 5)
  • Page 73 Performance Tests d. Modify the initialized front-panel control settings: Set the horizontal SCALE to 200 s. Press SHIFT; then press ACQUIRE MENU. Press the main-menu button Mode; then press the side-menu button Average. Select 64 averages. Do this with the keypad or the general purpose knob 2.
  • Page 74 CHECK that the Ch2 High readout is 2.5 volts and that the Ch2 Low readout is 0.7 volts. Enter high and low voltages on test record. 3. Confirm CH 3 (Ax1 on TDS 520B, 620B, 680B, and TDS 724A) output is within limits for gain: a. Measure gain:...
  • Page 75 Push TRIGGER MENU. Press the main-menu button Source. Press the side-menu button Ch3. (Ax1 on TDS 520B, 620B, 680B, and TDS 724A) Set vertical SCALE to 100 mV. Press SET LEVEL TO 50%. Press MEASURE; then press the main-menu button Select Measrmnt for Ch2.
  • Page 76 Performance Tests Check Probe Equipment One female BNC to clip adapter (Item 3) Required Compensator Output Two dual-banana connectors (Item 6) One BNC T connector (Item 7) Two 50 precision cables (Item 5) One DC calibration generator (Item 9) Prerequisites See page 1–15.
  • Page 77 Performance Tests c. Modify the initialized front-panel control settings: Set the horizontal SCALE to 200 s. Press SET LEVEL TO 50%. Use the vertical POSITION knob to center the display on screen. Press SHIFT; then press ACQUIRE MENU. Press the main-menu button Mode; then press the side-menu button Average.
  • Page 78 Performance Tests Figure 1–23: Measurement of Probe Compensator Frequency c. Save the probe compensation signal in reference memory: Press SAVE/RECALL WAVEFORM; then press the main-menu button Save Wfm Ch 1. Press the side-menu button To Ref 1 to save the probe compensation signal in reference 1.
  • Page 79 Performance Tests the other side of the BNC T connector. Now connect the BNC T connector to CH 1. See Figure 1–24. Digitizing Oscilloscope DC Calibrator Dual Banana to BNC Adapters BNC T Connector Coaxial Cables Figure 1–24: Subsequent Test Hookup e.
  • Page 80 Performance Tests Figure 1–25: Measurement of Probe Compensator Amplitude g. Check against limits: Subtract the value just obtained (base level) from that obtained previously (top level). CHECK that the difference obtained is within 495 mV to 505 mV, inclusive. Enter voltage difference on test record. 3.

  • Page 81: Option 05 Video Trigger Checks

    Performance Tests Option 05 Video Trigger Checks Check Video Trigger Equipment PAL signal source (Item 14) Required 60 Hz. sine wave generator (Item 15) Pulse generator (Item 16) Two 75 cables (Item 17) Two 75 terminators (Item 18) One BNC T connector (Item 7) cable (Item 5) terminator (Item 4) Prerequisites...
  • Page 82 Performance Tests g. Press the main-menu Bandwidth. h. Select 250 MHz from the side menu. Press the main-menu Fine Scale. 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.
  • Page 83 Performance Tests Figure 1–27: Jitter Test Displayed Waveform – TDS 684B Shown c. Press SHIFT; then press ACQUIRE MENU. d. Press the main-menu Mode. e. Select the side-menu Average. It should be already set to 16. Press the main-menu Create Limit Test Template. g.
  • Page 84 Performance Tests q. Press the main-menu Mode. r. Press the side-menu Envelope. s. Use the keypad to set envelope to use 100 acquisitions (press 100, then ENTER). Press the main-menu Stop After button. u. Press the side-menu Single Acquisition Sequence. v.
  • Page 85 Performance Tests b. Press WAVEFORM OFF. c. Press HORIZONTAL MENU. d. Use the keypad to set horizontal scale (/div) to 50 s (press 50, SHIFT, , then ENTER). e. Press SHIFT; then press ACQUIRE MENU. Press the main-menu Stop After. g.
  • Page 86 Performance Tests Positive pulse Negative pulses Figure 1–29: Triggered Signal Range Test – 300 mV 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 lighted and that the waveform on screen is stable.
  • Page 87 Performance Tests Positive pulse Negative pulses Figure 1–30: Triggered Signal Range Test – 75 mV p. Disconnect all test equipment (TSG121) from the digitizing oscillo- scope. 5. Check 60 Hz Rejection. a. Set up oscilloscope for 60 Hz Rejection Test. Use the keypad to set the Ch1 Fine Scale to 282 mV (press 282, SHIFT m, then ENTER).
  • Page 88 Performance Tests Digitizing Oscilloscope Signal Generator Output Cable Figure 1–31: 60 Hz Rejection Test Hookup Adjust the signal generator for three vertical divisions of 60 Hz signal. See Figure 1–32. The signal will not be triggered. That is, it will run free. Figure 1–32: 60 Hz Rejection Test Setup Signal c.
  • Page 89 Performance Tests TSG 121) to a 75 cable and a 75 terminator. Connect both signals to the CH1 input through a BNC T. See Figure 1–33. Press VERTICAL MENU. If needed, press the main-menu Fine Scale. Use the keypad to set fine scale to 500 mV (press 500, SHIFT, m, then ENTER).
  • Page 90 Performance Tests Figure 1–34: 60 Hz Rejection Test Result – TDS 684B Shown 6. Check Line Count Accuracy. a. Set up oscilloscope for Line Count Accuracy Test. Press WAVEFORM OFF. Press CH1. Press HORIZONTAL MENU. Press the main-menu Record Length. Press the side-menu –more–...
  • Page 91 Performance Tests PAL Signal Source Digitizing Oscilloscope Output Cable Terminator Figure 1–35: Line Count Accuracy Test Hookup Press the main-menu Trigger Position. Press the side-menu to Set to 50%. Press the main-menu to Horiz Pos. Press the side-menu to Set to 50%. Use the HORIZONTAL POSITION knob to move the falling edge of the sync pulse to two divisions to the left of center screen.
  • Page 92 Performance Tests Figure 1–36: Line Count Accuracy Test Setup Waveform – TDS 684B Shown Press CURSOR. Press the main-menu Function. Press the side-menu V Bars. Using the General Purpose knob, place the left cursor directly over the trigger ‘T’ icon. Press SELECT.
  • Page 93 Performance Tests Figure 1–37: Line Count Accuracy Correct Result Waveform Disconnect all test equipment (TSG 121) from the digitizing oscilloscope. 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.
  • Page 94 Performance Tests 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).
  • Page 95 Performance Tests c. Check Sync Duty Cycle. Connect the pulse generator through a 50 cable and a 50 terminator to the oscilloscope CH1 input. See Figure 1–38. Pulse Generator Digitizing Oscilloscope Output Cable Terminator Figure 1–38: 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.
  • Page 96 Performance Tests Figure 1–39: 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’s CH1 – Width measurement displays 400ns +/–10 ns. Turn the HORIZONTAL SCALE knob to set the oscilloscope time base to 5 s/div.
  • Page 97 Performance Tests Figure 1–40: Sync Duty Cycle Test: Critically Adjusted Pulse Press TRIGGER MENU. Press the main-menu Type pop-up until you select Video. If the TRIG’D LED is not lighted, 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.

  • Page 98: Sine Wave Generator Leveling Procedure

    Performance Tests Disconnect the signal source from CH1, wait a few seconds, then reconnect the signal. CONFIRM that the TRIG’D LED is lighted and the waveform is stable. Disconnect all test equipment from the digitizing oscilloscope. Press save/recall SETUP, the main-menu button Recall Factory Setup, and the side-menu OK Confirm Factory Init.
  • Page 99 Performance Tests Sine Wave Level Digitizing Oscilloscope Generator Meter Input Power Output Splitter Attenuators (if necessary) Power Sensor Figure 1–41: Sine Wave Generator Leveling Equipment Setup 1. Install the test hookup: Connect the equipment as shown in Figure 1–41. 2. Set the Generator: Set the sine wave generator to a reference frequency of 10 MHz.
  • Page 100 Performance Tests Equipment Sine wave generator (Item 19) Required Level meter and power sensor (Item 20) Two male N to female BNC adapters (Item 23) Two precision coaxial cables (Item 5) Prerequisites See page 1–15 1. Install the test hookup: Connect the equipment as shown in Figure 1–42 (start with the sine wave generator connected to the digitizing oscilloscope).
  • Page 101 Performance Tests 4. Set the generator to the new frequency and reference level: Change the sine wave generator to the desired new frequency. Input the correction factor for the new frequency into the level meter. Adjust the sine wave generator amplitude until the level meter again reads the value noted in step 3.
  • Page 102 Performance Tests 1–88 TDS Family Performance Verification and Specifications...
  • Page 103 Specifications...

  • Page 105: Specifications

    Opt. 1G, TDS 540B, 744A: simultaneously 1 GS/s Analog bandwidth 1 GHz on TDS 680B, 684B, and 784A 500 MHz on TDS 520B, 540B, 620B, 644B, 724A and 744A Channels Four, each with 8-bit resolution Record lengths, maximum 15,000 samples...

  • Page 106: User Interface

    Specifications User Interface Use a combination of front-panel buttons, knobs, and on-screen menus to control the many functions of the oscilloscope. The front-panel controls are grouped according to function: vertical, horizontal, trigger, and special. Set a function you adjust often, such as vertical positioning or the time base setting, directly by its own front-panel knob.

  • Page 107: Horizontal System

    2,000 divs 10 divs (TDS 500B/700A opt. 1M only) 130000 2,600 divs 13 divs (TDS 500B/700A opt. 1M only) (for TDS 520B & 724A, 1 or 2 channels only) 250000 5,000 divs 10 divs (TDS 520B/724A opt. 1M only, 1 channel, TDS 540B, 744A, 784A opt.

  • Page 108: Trigger System

    Specifications Both the delayed only display and the intensified zone on the main intensified display may be delayed by time with respect to the main trigger. Both can be set 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 modes).

  • Page 109: Acquisition Control

    Specifications Acquisition Control You can specify a mode and manner to acquire and process signals that matches your measurement requirements. Select the mode for interpolation (linear or sin (x)/x). This can increase the apparent sample rate on the waveform when the maximum real-time rate is exceeded.

  • Page 110: Storage

    An important component of the multiprocessor architecture of this Digitizing (DSP) 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.

  • Page 111: Display

    Specifications measurements in a production or research and development environment that calls for repetitive data taking. Self-compensation and 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. The oscilloscope can also output copies of its display using the hardcopy feature.
  • Page 112 Specifications 2–8 TDS Family Performance Verification and Specifications...

  • Page 113: Nominal Traits

    Description Bandwidth Selections 20 MHz, 250 MHz, and FULL Samplers, Number of TDS 540B, 644B, 684B, 744A, 784A: Four, simultaneous TDS 520B, 620B, 680B, 724A: Two, simultaneous Digitized Bits, Number of 8 bits Input Channels, Number of Four Input Coupling...
  • Page 114 Record Length Selection 500 samples, 1000 samples, 2500 samples 5000 samples, 15000 samples The TDS 520B and 724A also offer: 50000 samples and, with its option 1M, 75000, 100000, 130000 (1 or 2 channels), or 250000 (1 channel) samples The TDS 540B, 744A, and 784A also offer: 50000 samples and, with its option 1M,...
  • Page 115 Nominal Traits Table 2–5: Nominal Traits — Triggering System Name Description Range, Delayed Trigger Time Delay 16 ns to 250 s Range, Events Delay TDS 600B; 2 to 10,000,000 TDS 500B/700A: 1 to 10,000,000 Range (Time) for Pulse-Glitch, 1 ns to 1 s Pulse-Width, Time-Qualified Runt, Timeout, or Slew Rate Trigger, Delta Time Setup and Hold for...
  • Page 116 Single Graticule: 401 501 pixels, 8 10 divisions, where divisions are 1 cm by 1 cm Waveform Display Levels/Colors TDS 520B, 540B, 620B & 680B: Sixteen levels in infinite-persistence or variable persistence display TDS 644B, 684B, 724A, 744A, 784A: Sixteen colors in infinite-persistence or variable persistence display Table 2–7: Nominal Traits —...
  • Page 117 Forced-air circulation with no air filter. Clearance is required. Construction Material Chassis parts constructed of aluminum alloy; front panel constructed of plastic laminate; circuit boards constructed of glass laminate. Cabinet is aluminum and is clad in Tektronix Blue vinyl material. Finish Type...
  • Page 118 Nominal Traits 2–14 TDS Family Performance Verification and Specifications...

  • Page 119: Warranted Characteristics

    Warranted Characteristics This section lists the various warranted characteristics that describe the TDS 500B, 600B, and 700A Digitizing Oscilloscopes. Electrical and environ- mental characteristics are included. 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 appear in boldface type under the column Name.
  • Page 120 Warranted Characteristics Table 2–10: Warranted Characteristics — Signal Acquisition System Name Description Accuracy, DC Gain TDS 600B: 1.5% for all sensitivities from 2 mV/div to 10 V/div 2.0% at 1 mV/div sensitivity TDS 500B, 700A: 1% for all sensitivities from 1 mV/div to 10 V/div with offset from 0 V to 100V Accuracy, DC Voltage Measurement, Accuracy, DC Voltage Measurement,...
  • Page 121 Warranted Characteristics Table 2–10: Warranted Characteristics — Signal Acquisition System (Cont.) Name Description Analog Bandwidth, DC-50 Coupled 520B, 540B, 724A, and Bandwidth selection is FULL, and Bandwidth selection is FULL, Volts/Div 744A Bandwidth 784A Bandwidth TDS 500B/700A TDS 500B/700A 10 mV/div – DC –...
  • Page 122 Warranted Characteristics Table 2–12: Warranted Characteristics — Triggering System Name Description Sensitivity, Edge-Type Trigger, Coupling Sensitivity, Edge-Type Trigger, Coupling Trigger Source Sensitivity set to “DC” set to “DC” Any Channel TDS 620B & 644B: 0.35 division from DC to 50 MHz, increasing to 1 division at 500 MHz TDS 680B &...
  • Page 123 Warranted Characteristics Table 2–13: Warranted Characteristics — Output Ports, Probe Compensator, and Power Requirements (Cont.) Name Description Output Voltage and Frequency, Output Voltage and Frequency, Characteristic Limits Probe Compensator Probe Compensator Output Voltage 0.5 V (base-top) 1% into a 50 load Frequency 1 kHz 5%...
  • Page 124 Warranted Characteristics Table 2–14: Warranted Characteristics — Environmental (Cont.) Name Description 1, 2 Emissions (TDS 500B/700A) Meets or exceeds the requirements of the following standards: Vfg. 243/1991 Amended per Vfg. 46/1992 FCC Code of Federal Regulations, 47 CFR, Part 15, Subpart B, Class A European Community Requirements EN 55011 Class A Radiated Emissions EN 55011 Class A Conducted Emissions...
  • Page 125 The GPIB cable connected to the instrument for certain of the emissions tests must be “low EMI” having a high-quality outer shield connected through a low impedance to both connector housings. Acceptable cables are Tektronix part numbers 012-0991-00, -01, -02, and -03. In order to maintain the EMI performance conforming to the above regulations, the following cables, or their equivalent, should be used: a shielded Centronics cable, 3 meters in length, part number 012-1214-00, and a shielded RS-232 cable, 2.7 meters in length, CA part number 0294-9.
  • Page 126 Warranted Characteristics 2–22 TDS Family Performance Verification and Specifications...

  • Page 127: Typical Characteristics

    Typical Characteristics This subsection contains tables that list the various typical characteristics which describe the TDS 500B, 600B and 700A Digitizing Oscilloscopes. Typical characteristics are described in terms of typical or average performance. Typical characteristics are not warranted. Table 2–15: Typical Characteristics — Signal Acquisition System Name Description Analog Bandwidth, DC-50...
  • Page 128 Typical Characteristics Table 2–15: Typical Characteristics — Signal Acquisition System (Cont.) Name Description Analog Bandwidth, DC-50 Coupled Volts/Div as with P6245 Probe and Bandwidth Read Out on 784A Bandwidth selection is FULL, TDS 784A selection is FULL, TDS 784A Screen 10 mV/div –...
  • Page 129 Typical Characteristics Table 2–15: Typical Characteristics — Signal Acquisition System (Cont.) Name Description Single Shot or TDS 600B: ( (0.20 sample interval) + (100 ppm | Reading |) + Sample mode (0.05 W (or HiRes mode TDS 600B example: at 5 GS/s, 5 ns/div, measuring a 40 ns wide on the TDS pulse, accuracy = ( 40 ps + 4 ps + 5 ps) = 49 ps.
  • Page 130 Table 2–15: Typical Characteristics — Signal Acquisition System (Cont.) Name Description Effective Bits Sample Rate Input Input — TDS 520B, 724A — TDS 520B, 724A 1 GS/s 10 MS/s & HiRes Frequency The chart on the right gives the typical The chart on the right gives the typical 1 MHz –...
  • Page 131 Typical Characteristics Table 2–16: Typical Characteristics — Triggering System Name Description Accuracy, Trigger Level or Threshold, Accuracy, Trigger Level or Threshold, Trigger Source Accuracy DC Coupled DC Coupled Any Channel ((2% | Setting – Net Offset |) (for signals having rise and fall times + (0.3 div Volts/div Setting ) + Offset 20 ns) Accuracy)
  • Page 132 Typical Characteristics Table 2–16: Typical Characteristics — Triggering System (Cont.) Name Description For vertical settings > 10 mV/div and 1 V/div at the BNC input Width, Minimum Pulse and Rearm, for Logic Triggering or Events Delay Minimum Minimum Pulse Minimum Re-Arm Time Between Triggering Type Width...
  • Page 133 Typical Characteristics Table 2–16: Typical Characteristics — Triggering System (Cont.) Name Description 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 and produces no extra, phantom events.) The minimum signal levels required for stable runt pulse triggering of an acquisition.
  • Page 134 Typical Characteristics 2–30 TDS Family Performance Verification and Specifications...

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Tds 540bTds 680bTds 684bTds 724aTds 620bTds 744a ... Show all

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