Tektronix 420 Service Manual
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Tektronix 420 Service Manual

Tektronix 420 Service Manual

Digitizing oscilloscopes
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Advanced Test Equipment Rentals
www.atecorp.com 800-404-ATEC (2832)
Service Manual
TDS 410, 420 & 460
Digitizing Oscilloscopes
070–8036–02
Please check for change information at the rear
of this manual.
Third Edition: February 1994
Last Revised: May 31, 1994

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  • Page 1 ® Advanced Test Equipment Rentals www.atecorp.com 800-404-ATEC (2832) Service Manual TDS 410, 420 & 460 Digitizing Oscilloscopes 070–8036–02 Please check for change information at the rear of this manual. Third Edition: February 1994 Last Revised: May 31, 1994...
  • Page 2 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.
  • 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 4: Table Of Contents

    ..........TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 5 Zoom ..........Nominal Traits .
  • Page 6 ......vv v TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 7 Equipment Required ........Adjustment Instructions .
  • Page 8 Using the Replaceable Parts List ......10-2 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 9 Contents...
  • Page 10 ......5-11 Figure 5-5: Initial Test Hookup (TDS 410 and TDS 420 Only) ..
  • Page 11 Figure 5-13: Adjustments vs. Front-Corner Response ... . . 5-19 Figure 5-14: Monitor Adjustment Locations ..... . 5-21 Figure 5-15: Five and Ten Percent Luminance Patches .
  • Page 12 ....... 10-13 xx x x TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 13 Contents...
  • Page 14 ....... . . 4-19 Table 4-3: Analog Bandwidth (TDS 410 and TDS 420) ... .
  • Page 15 Table 6-8: Troubleshooting Test Equipment, Fixtures, and Supplies 6-67 Table 6-9: Connections for a 9 to 25 Pin Null Modem Cable ..6-68 Table 6-10: Diagnostic Failure Priority List ..... . 6-73 Table 6-11: Normal Output Voltage .

  • Page 16: Service Safety Summary

    This symbol appears in manuals: Static-Sensitive Devices These symbols appear on equipment: DANGER Protective ATTENTION High Voltage ground (earth) Refer to terminal manual x x x TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 17 Observe all of the following precautions to ensure your personal safety and to Specific Precautions prevent damage to either the digitizing oscilloscope or the equipment con- nected to it. Do Not Perform Service While Alone Do not perform internal service or adjustment of this product unless another person capable of rendering first aid and resuscitation is present.
  • Page 18 Do not operate the digitizing oscilloscope in an atmosphere of explosive gasses. Electric Overload Never apply a voltage to a connector on the digitizing oscilloscope that is outside the range specified for that connector. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 19: Safety Summary

    Safety Summary...

  • Page 20: Preface

    This service manual provides service information for the TDS 410, TDS 420, and TDS 460 Digitizing Oscilloscopes. If servicing a TDS 410, follow the procedures for the TDS 420, but ignore all references to CH 3 and CH 4. This manual is divided into sections, such as Specifications and Theory of Manual Structure Operation .

  • Page 21: Manual Conventions

    Various icons such as the example icon at the left are used in proce- dures to help identify certain readouts and menu functions on screen. These other manuals are available for the TDS 410, TDS 420, and TDS 460 Related Manuals Digitizing Oscilloscopes.

  • Page 22: Introduction

    Tektronix. This manual is for servicing the TDS 410, TDS 420, & TDS 460 Digitizing Before Servicing Oscilloscopes. To prevent injury to yourself or damage to the oscilloscope, do the following before you attempt service: Be sure you are a qualified service person;...

  • Page 23: Tektronix Service

    Of these services, the annual maintenance agreement offers a particularly cost-effective approach to service for many owners of the TDS 420 & TDS 460 Digitizing Oscilloscopes. Such agreements can be purchased to span several years.

  • Page 24: Self Service

    Module Repair and Return — This service returns to you within 10 days the same module that you shipped to Tektronix. The module shipped is re- paired, tested, and returned to you from the Beaverton, Oregon service center. It is not updated to match current modules of the same type. Again, each module comes with a 90-day service warranty.
  • Page 25 Introduction...

  • Page 26: Specifications

    Specifications...

  • Page 27: Product Description

    Key features include: Four input channels on the TDS 420 and TDS 460 (two input channels on the TDS 410), each with a record length of 500 to 15,000 points and 8-bit vertical resolution.

  • Page 28: Menus

    Product Description Menus Those functions for which control settings are usually changed less often, such as vertical coupling and horizontal mode, are set indirectly. That is, pressing one (sometimes two) front-panel button, such as vertical menu, displays a menu of functions at the bottom of the screen that are related to that button.

  • Page 29: Horizontal System

    At time base settings of 20 ms per division or slower the records are dis- played using Roll mode. Both untriggered roll and triggered roll modes are available. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 30: Trigger System

    Product Description The triggering system comprises a complete set of features for triggering the Trigger System signal-acquisition system. In edge trigger mode, you can select the source, slope, coupling, mode (auto or normal), and holdoff. Oscilloscopes ordered with Option 5 also have the video trigger mode. This trigger mode allows triggering on NTSC-standard, PAL-standard, SECAM- standard, or custom video waveforms.

  • Page 31: Measurement Assistance

    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 automated measurements in a production or research and development TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 32: Display

    Product Description 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. 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-controller...

  • Page 33: Nominal Traits

    8 bits Input Channels, Number of TDS 410: Two, both identical, called CH 1 and CH 2 TDS 420 and TDS 460: Four, all identical, called CH 1 through CH 4 Input Coupling DC, AC, or GND Input Resistance Selections...

  • Page 34: Table 1-3: Nominal Traits - Time Base System

    Nominal Traits Table 1-2: Nominal Traits — Signal Acquisition System (Cont.) Name Description Rise Time Volts/Div Setting Rise Time (TDS 410 and TDS 420) 5 mV/div–10 V/div 2.3 ns 2 mV/div–4.98 mV/div 3.2 ns 1 mV/div–1.99 mV/div 3.9 ns Rise Time...

  • Page 35: Table 1-4: Nominal Traits - Triggering System

    Two lithium poly-carbon monofluoride. Both are type BR2/3A, UL listed. Both are rated at 3.0 volt, 1.2 amp-hour. Batteries are not accessible from the outside of the instrument; therefore, they can only be replaced by a service technician. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 36: Table 1-7: Nominal Traits - Gpib Interface, Video Output, And Power Fuse

    Chassis parts constructed of aluminum alloy; front panel constructed of plastic laminate; circuit boards constructed of glass-laminate. Plas- tic parts are polycarbonate. Finish Type Tektronix Blue textured finish on aluminum cabinet. Weight Standard digitizing oscilloscope 8.6 kg (19.0 lbs), oscilloscope only.
  • Page 37 Rackmount digitizing oscilloscope Height 178 mm (7.0 in). Width 483 mm (19.0 in). Depth 472 mm (18.6 in), without front-panel handles; 517 mm (20.35 in), with front-panel handles installed. 1 11 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 38: Warranted Characteristics

    Warranted Characteristics This subsection lists the various warranted characteristics that describe the TDS 400 Digitizing Oscilloscopes. Included are electrical and environmental characteristics. Warranted characteristics are described in terms of quantifiable performance limits which are warranted. This subsection lists only warranted characteristics.
  • Page 39 200 ps between CH 1 and CH 2 (all models) and between CH 3 and width, Equivalent Time CH 4 (TDS 420 and TDS 460) when both channels have equal volts/ division and coupling settings 450 ps for any other combination of two channels with equal volts/di- vision and coupling settings (TDS 420 and TDS 460).

  • Page 40: Table 1-10: Warranted Characteristics - Time Base System

    . Matched between chan- nels to within capacitance Input Impedance, DC-50 Coupled with VSWR 1.2:1 from DC–150 MHz (TDS 410 and TDS 420) Input Impedance, DC-50 Coupled VSWR 1.6:1 from DC–350 MHz (TDS 460) Input Voltage, Maximum, DC-1 M...

  • Page 41: Table 1-11: Warranted Characteristics - Triggering System

    Sensitivity, Edge-Type Trigger, DC 0.35 division from DC to 50 MHz, increasing to 1 division at 350 MHz Coupled (TDS 410 and TDS 420) or 500 MHz (TDS 460) for any channel as trigger source Sensitivity, Video-Type, TV Field and 0.6 division of video sync signal...

  • Page 42: Table 1-12: Warranted Characteristics - Probe Compensator Output

    Warranted Characteristics Table 1-12: Warranted Characteristics — Probe Compensator Output Name Description Output Voltage and Frequency, Characteristic Limits Probe Compensator Voltage 0.5 V (base-top) load Frequency 1 kHz Table 1-13: Warranted Characteristics — Power Requirements Name Description Source Voltage and Frequency 90 to 132 VAC rms, continuous range, for 48 Hz through 62 Hz 100 to 132 VAC rms, continuous range, for 48 Hz through 440 Hz 180 to 250 VAC rms, continuous range, for 48 Hz through 440 Hz...

  • Page 43: Table 1-14: Warranted Characteristics - Environmental, Safety, And Reliability

    (braid and foil) GPIB cable. The cable shield must have low impedance connections to both connector housings. Acceptable cables are Tektronix part numbers 012-0991-00, -01, -02, and -03. To maintain emission requirements when connecting to the VGA-compatible video output of this oscilloscope, use only a high-quality double-shielded (braid and foil) video cable with ferrite cores at either end.

  • Page 44: Typical Characteristics

    Typical Characteristics This subsection contains tables that list the various typical characteristics that describe the TDS 400 Digitizing Oscilloscopes. Typical characteristics are described in terms of typical or average performance. Typical characteristics are not warranted. This subsection lists only typical characteristics. A list of warranted character- istics starts on page 1-12.

  • Page 45: Table 1-16: Typical Characteristics - Time Base System

    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 1-11, which begins on page 1-15. 1 19 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 46: Table 1-18: Typical Characteristics - Data Handling

    Typical Characteristics Table 1-17: Typical Characteristics — Triggering System (Cont.) Name Description Frequency, Maximum for Events Delay 90 MHz Width, Minimum Pulse and Rearm, 5 ns Events Delay Video Mode (Option 05 Equipped Instru- Line Rate Class: Four classes are provided as follows. ments Only) NTSC, which provides a default line rate compatible with the NTSC standard (525/60)

  • Page 47: Operating Information

    Operating Information...

  • Page 48: Installation

    Any interruption of the grounding connection can create an electric shock hazard. For electric shock protection, the grounding connection must be made before making connection to the oscilloscope input or output terminals. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 49: Power Cord Information

    Installation Power Cord Information A power cord with appropriate plug configuration is supplied with each digitizing oscilloscope. Table 2-1 gives the color coding of the conductors in the power cord. If you require a power cord other than the one supplied, refer to Figure 2-1.

  • Page 50: Figure 2-1: Power-Cord Plug Identification

    Option A5 Australian North Switzerland 230V American 230V 230V * Canadian Standards Association certification includes these power plugs for use in the North American power network Figure 2-1: Power-Cord Plug Identification TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 51: Operating Environment

    Installation The following environmental requirements are provided to ensure proper Operating operation and long oscilloscope life. Environment Operating Temperature Operate the oscilloscope where the ambient air temperature is between 0 _ C and +50 _ C, and store the oscilloscope at an ambient temperature from –40 _ C to +75 _ C.

  • Page 52: Power-Down

    A frequency response adjustment is re- quired (Section 5). Response Trigger Skew A trigger skew adjustment is required (Section 5). Error Log Errors logged are lost. Reference Waveforms Waveforms Lost. Saved Setups Setups Lost. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 53: Repackaging Instructions

    (If available, use the original shipping carton, which meets these requirements.) If the instrument is being shipped to a Tektronix Service Center, enclose the following information: the owner’s address, the name and phone number of a contact person, the type and serial number of the oscilloscope, the reason for returning, and a complete description of the service required.

  • Page 54: Operating Information

    ON/STBY switch. When connecting or disconnecting the line cord to or from the power source, the principal power switch should be off. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 55: How To Use Help

    Operating Information Brief status General purpose information. knob readout. Side menu area. Readouts for measurements move here when CLEAR MENU is pressed. Position of waveform record relative to the screen and display. Waveform reference symbols: ground levels and waveform sources. Graticule and waveforms.

  • Page 56: How To Set Functions

    1. Locate the block that contains the function to be set. Vertical Controls and Horizontal Controls Block Inputs Block Trigger Controls Block Special Controls Block: Accesses all functions except those in the remaining three control blocks. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 57 Operating Information 2. Select the waveform source(s). Position, scale, and set trigger level for waveform source(s) directly from the front-panel. (Note that parentheses- enclosed numbers appear within the following steps. Each number refers to the control(s) labeled with the same number in the figure that precedes the step.) a.
  • Page 58 Example: Push Coupling (13). e. Select the setting for the function from the side menu (9) using the side menu buttons (11). Example: Push AC (10). 2 11 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 59: How To Set Complex Functions

    Operating Information How to Set Complex Functions A few functions require more than just two levels (main and side) of menus to completely specify their settings. In such cases, either the main menu, the side menu, or both are modified to supply additional choices. The procedures that follow show both schemes.
  • Page 60 The general purpose knob can also be assigned to control the following functions: Cursor positioning Display intensities Delay time Number of events Trigger position 2 13 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 61 Operating Information Holdoff Offset Variable persistence In all cases, the menus are used to select the function to which the general purpose knob is assigned. The following attributes apply to this knob: Depending on the function it is assigned to control, the general purpose knob varies numerical readouts, positions objects (cursors) on screen, or selects between icon-label settings that show up in side-menu labels.
  • Page 62 Instructions for setting up communication over the GPIB are found in Sec- tion 5, Adjustment Procedures . 2 15 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 63 Operating Information 2 16 Operating Information...

  • Page 64: Theory Of Operation

    Theory of Operation...

  • Page 65: Circuit Description

    Circuit Description This section describes the electrical operation of the Tektronix TDS 410, TDS 420, & TDS 460 Digitizing Oscilloscopes using the major circuit blocks or modules. This section has two main parts: Logic Conventions describes how logic functions are discused and represented in this manual.
  • Page 66 Circuit Description Attenuators — Circuitry in the attenuator selects the input coupling, the termination, and the attenuation factor. The processor system controls the attenuators. For example, if 50 input termination is selected and the input is overloaded, the processor system switches the input to the 1 M position.
  • Page 67 The fan provides forced air cooling for the oscilloscope. It connects to +12 V on the A01 Backplane through the A07 Auxiliary Power board. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 68 Circuit Description Theory of Operation...

  • Page 69: Performance Verification

    Performance Verification...

  • Page 70: Brief Procedures

    If you are not familiar with operating this oscilloscope, read General Operating Instructions in Section 3 of this manual. These instructions will acquaint you with the use of the front-panel controls and the menu system. TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 71: Conventions

    Brief Procedures Throughout these procedures the following conventions apply: Conventions 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 72: Figure 4-1: Map Of Display Functions

    Vertical scale, horizontal scale, and trigger-level readouts. Main menu display area. Readouts in lower graticule area move here when CLEAR MENU is pressed. Figure 4-1: Map of Display Functions TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 73: Self Tests

    Brief Procedures This procedure uses internal routines to verify that this oscilloscope functions Self Tests and passes its internal self tests and signal path compensations. It also confirms that the oscilloscope was adjusted properly at the time it was last adjusted.

  • Page 74: Figure 4-2: Verifying Adjustments And Signal Path Compensation

    (see step h). h. Confirm signal path compensation returns passed status: Verify the word Pass appears under Signal Path in the main menu. (See Figure 4-2.) TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 75: Functional Tests

    Brief Procedures 2. Return to regular service: Press CLEAR MENU to exit the system me- nus. The purpose of these procedures is to confirm that this oscilloscope functions Functional Tests properly. The only equipment required is one of the standard-accessory probes.

  • Page 76: Figure 4-3: Universal Test Hookup For Functional Tests

    Set the horizontal SCALE to 200 Press TRIGGER MENU. Press the main-menu button Coupling; then press the side menu-button HF Rej. TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 77: Verify The Time Base

    Brief Procedures c. Verify that the channel is operational: Confirm that the following statements are true. The vertical scale readout for the channel under test shows a setting of 100 mV, and a square-wave probe-compensation signal about five divisions in amplitude is on-screen. (See Figure 4-1 on page 4-3 to locate the readout.) The vertical POSITION knob moves the signal up and down the screen when rotated.

  • Page 78: Verify The Main And Delayed Trigger Systems

    (See Figure 4-3 on page 4-7.) 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 default settings: TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 79 Brief Procedures Press AUTOSET to obtain a viewable, triggered display. Set the horizontal SCALE for the M (main) time base to 200 Press VERTICAL MENU. Press the main-menu button Bandwidth. Then press the side- menu button 20 MHz. Press TRIGGER MENU. Press the main-menu button Mode &...
  • Page 80 4. Remove the test hookup: Disconnect the standard-accessory probe from the channel input and the probe-adjust terminal. 4 11 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 81 Brief Procedures 4 12 Performance Verification...

  • Page 82: Performance Tests

    Equipment Required These procedures use external, traceable signal sources to directly check warranted characteristics. The required equipment list follows this introduc- tion. 4 13 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 83: Table 4-1: Test Equipment

    Female BNC to dual banana Tektronix part number Various accuracy Banana (two re- 103-0090-00 tests quired) Connector, BNC Male BNC to dual female BNC Tektronix part number Checking trigger “T” 103-0030-00 sensitivity Coupler, Dual- Female BNC to dual male Tektronix part number...

  • Page 84: Test Record

    Requires a TM 500 or TM 5000 Series Power Module Mainframe. Test Record Photocopy the next two pages and use them to record the performance test results for your instrument. 4 15 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 85 Performance Tests TDS 410, TDS 420, & TDS 460 Test Record Instrument Serial Number: Certificate Number: Temperature: RH %: Date of Calibration: Technician: Performance Test Minimum Incoming Outgoing Maximum Offset Accuracy CH1 Offset +1 V 995 mV __________ __________ +1.005 V +10 V 9.935 V...
  • Page 86 Delayed Trigger – Falling –18 mV __________ ___________ +18 mV Probe Compensator Output Signal Frequency 950 Hz __________ __________ 1050 Hz Voltage 475 mV __________ __________ 525 mV 4 17 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 87: Signal Acquisition System Checks

    Performance Tests These procedures check those characteristics that relate to the signal-ac- Signal Acquisition quisition system and are listed as checked under Warranted Characteristics in System Checks Section 1, Specification. Check Offset Accuracy Equipment Required: Two dual-banana connectors (Item 7), one BNC T connector (Item 8), one DC calibration generator (Item 10), and two precision coaxial cables (Item 5).

  • Page 88: Table 4-2: Dc Offset Accuracy

    Table 4-2: DC Offset Accuracy Vertical Vertical Offset Generator Offset Accuracy Scale Position Setting Setting Limits Setting 1 mV +1 V +1 V 100 mV +10 V +10 V +99.9 V +99.9 V 1 19 TDS 410, TDS 420, & TDS 460 Performance Verification...

  • Page 89: Check Dc Voltage Measurement Accuracy (Averaged)

    Performance Tests b. Set the vertical scale: Set the vertical SCALE to one of the settings listed in Table 4-2 that is not yet checked. (Start with the first setting listed.) c. Set the offset: Press the VERTICAL MENU button and then the Offset main-menu button.

  • Page 90: Figure 4-5: Initial Test Hookup

    1. a. Select an unchecked channel: Set the generator output to 0 V. Press WAVEFORM OFF to remove the channel just confirmed from the display. 1 21 TDS 410, TDS 420, & TDS 460 Performance Verification...

  • Page 91: Check Analog Bandwidth

    Then disconnect the cable from the generator output at the input connector of the channel last tested. Check Analog Bandwidth Equipment Required for TDS 410 and TDS 420: One medium-frequency leveled sine-wave generator (Item 11), one 50 precision cable (Item 5), and two 10X attenuators (Item 1).

  • Page 92: Figure 4-6: Initial Test Hookup (Tds 410 And Tds 420)

    Generator Output Figure 4-6: Initial Test Hookup (TDS 410 and TDS 420) c. TDS 410 and TDS 420: Hook up the test-signal source: Connect, through a 50 precision cable, the sine-wave output of a medium- frequency leveled sine-wave generator to CH 1. Set the output of the generator to a reference frequency of 50 kHz.

  • Page 93: Figure 4-7: Initial Test Hookup (Tds 460)

    Set the vertical scale: Set the vertical SCALE to one of the settings listed in Table 4-3 (TDS 410 and TDS 420) or Table 4-4 (TDS 460) not yet checked. (Start with the 100 mV setting.) 1 24...

  • Page 94: Table 4-3: Analog Bandwidth (Tds 410 And Tds 420)

    Performance Tests Table 4-3: Analog Bandwidth (TDS 410 and TDS 420) Vertical Attenuators Reference Amplitude Horizontal Test Scale (10X) (at 50 MHz) Scale Frequency Limits 100 mV none 600 mV (6 divisions) 5 ns 150 MHz 424 mV none 5 V (5 divisions)

  • Page 95: Figure 4-8: Measurement Of Analog Bandwidth

    Measure the test signal: Increase the frequency of the generator output to the test fre- quency in Table 4-3 (TDS 410 and TDS 420) or Table 4-4 (TDS 460) that corresponds to the vertical scale set in substep d. Set the horizontal SCALE to 5 ns (TDS 410 and TDS 420) or 2 ns (TDS 460).

  • Page 96: Check Delay Match Between Channels

    Table 4-3 (TDS 410 and TDS 420) or Table 4-4 (TDS 460) for the channel under test. When doing substep e, skip the subparts that turn on the CHx Pk-Pk measurement until you check a new channel.

  • Page 97: Figure 4-9: Initial Test Hookup

    Performance Tests a. Initialize the front panel; 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: Do not adjust the vertical position of any channel during this procedure.
  • Page 98 (Press TOGGLE to switch between the two cursors.) See Figure 4-10. Read the measurement results at the : cursor readout, not the @: readout on screen. 1 29 TDS 410, TDS 420, & TDS 460 Performance Verification...

  • Page 99: Figure 4-10: Measurement Of Channel Delay

    Performance Tests First, display the live/reference waveforms for all four channels. Note their overlapping ground references. Second, identify the time reference points of those waveforms. Third, turn on the cursor and align the V bar cursors to the time reference points. Fourth, read the results here.

  • Page 100: Time Base System Checks

    Coupling. Press the side-menu button to change the coupling setting to 50 Press SET LEVEL TO 50%. Use the vertical POSITION knob to center the test signal on screen. 4 31 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 101 Performance Tests Set the horizontal SCALE of the Main time base to 1 ms. Press TRIGGER MENU; then press the main-menu button Mode & Holdoff. Now press the side-menu button Normal. Press SET LEVEL TO 50%. Press horizontal MENU. Press the main-menu button Record Length;...

  • Page 102: Figure 4-12: Measurement Of Accuracy - Long-Term And Delay-Time

    Min-Max. Press the main-menu button Select Measurement for Ch1. Press the side-menu button –more–, until PERIOD appears in the side menu. Press PERIOD. Press CLEAR MENU. 4 33 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 103 Performance Tests CHECK that the readout for CH 1 Per is within 49.592 ns to 50.408 ns. 3. Disconnect the hookup: Disconnect the cable from the generator output at the input connector of CH 1. 4 34 Performance Verification...

  • Page 104: Trigger System Checks

    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. 4 35 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)
  • Page 105 Performance Tests 2. Confirm Main trigger system is within limits for Trigger-level/Threshold accuracy: a. Display the test signal: Set the vertical SCALE to 50 mV. Set the standard output of a DC calibration generator to +0.3 V. b. Measure the test signal: Press SET LEVEL TO 50%.
  • Page 106 First set the output of the DC calibration generator to 0 volts. b. Then disconnect the cable from the generator output at the input connector of CH 1. 4 37 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 107: Sensitivity, Edge Trigger, Dc Coupled

    Performance Tests Sensitivity, Edge Trigger, DC Coupled Equipment Required: One medium-frequency leveled sine-wave generator (Item 11), one high-frequency leveled sine-wave generator (Item 12), one precision 50 coaxial cable (Item 5), one 10X attenuator (Item 1), and one 5X attenuator (Item 2). Prerequisites: See page 4-13.
  • Page 108 MAIN LEVEL knob to stabilize the trigger if required.) Leave the Main trigger system triggered on the positive slope of the waveform before continuing to the next step. 4 39 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 109: Figure 4-15: Measurement Of Trigger Sensitivity

    Performance Tests 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. Figure 4-15: Measurement of Trigger Sensitivity c. Check delayed trigger system for stable triggering at limits: Do the following subparts in the order listed.
  • Page 110 Set the horizontal SCALE to 2 ns for the D (Delayed) time base. Press the side-menu button Main Only. c. Display the test signal: Set the generator frequency to 350 MHz (TDS 410 and TDS 420) or 500 MHz (TDS 460). Set the test signal amplitude for about five divisions on screen.

  • Page 111: Maximum Input Frequency, Auxiliary Trigger

    Performance Tests Maximum Input Frequency, Auxiliary Trigger Equipment Required: One medium-frequency leveled sine-wave generator (Item 11), two precision 50 coaxial cables (Item 5), and a BNC T connector (Item 8). Prerequisites: See page 4-13. Procedure: 1. Install the test hookup and preset the instrument controls: To Rear Panel Medium Frequency...

  • Page 112: Figure 4-17: Confirming Auxiliary Triggering At Maximum Triggering Frequency

    Figure 4-17: Confirming Auxiliary Triggering at Maximum Triggering Frequency 3. Disconnect the hookup: Disconnect the cable from the generator output at the input connector of the channel last tested. 4 43 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 113: Check Video Trigger Sensitivity (Option 05 Equipped Models Only)

    Performance Tests Check Video Trigger Sensitivity (Option 05 Equipped Models Only) Equipment Required: One NTSC format video generator (Item 15), 75 coaxial cable (Item 6), and one 75 terminator (Item 4). Prerequisites: See page 4-13. Procedure: 1. Install the test hookup and preset the instrument controls: a.

  • Page 114: Figure 4-19: Adjusting Sync Pulse Amplitude

    “roll” across the screen. At horizontal scale settings appropriate for viewing video waveforms, the TRIG’D light remains constantly lit. 4 45 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 115: Figure 4-20: Measurement Of Video Sensitivity

    Performance Tests Press TRIGGER MENU. Press the main menu button Type twice—first to pop up its menu and then to toggle it to Video. Press the main menu button Class to pop up its menu. Press it again as needed to toggle it to NTSC. Press the main menu button Scan to pop up its menu.
  • Page 116 Using the Vertical POSITION knob return the waveform to the center of the display. 3. Disconnect the hookup: Disconnect the cable from the generator output at the input connector of CH 1. 4 47 TDS 410, 420 & TDS 460 Service Manual (Company Confidential Final Draft)

  • Page 117: Output Signal Check

    Performance Tests The procedure that follows checks the characteristics of the probe compensa- Output Signal Check tion signal that are listed as checked under Warranted Characteristics in Section 1, Specification. Check Probe Adjust Output Equipment Required: One standard-accessory 10X probe (Item 14). Prerequisites: See page 4-13.

  • Page 118: Figure 4-22: Measurement Of Probe Compensator Limits

    950 Hz to 1.050 kHz, inclusive, and that the readout for Ch1 Ampl is within 475 mV to 525 mV, inclusive. c. Disconnect the test hookup: Remove the test probe as desired. 4 49 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 119 Performance Tests 4 50 Performance Verification...

  • Page 120: Adjustment Procedures

    Adjustment Procedures...

  • Page 121: Requirements For Performance

    Adjustment Procedures This section contains information needed to adjust the TDS 410, TDS 420, & TDS 460 Digitizing Oscilloscopes. Description — The Adjustment Procedures are divided into three parts: This general information about adjusting this oscilloscope and the written procedures for installing and using the adjustment software.

  • Page 122: System

    386sx ) or better with a math coprocessor installed. When obtained with its optional math coprocessor installed, the Tektronix RIC 386 controller, listed in the equipment list on page 5-5, is an example of a recommended computer. MSDOS 3.2 or higher.

  • Page 123: Complete Adjustment

    Table 5-1: Adjustments Required for Module Replaced Module Replaced Adjustment Required Acquisition Board Complete Adjustment Attenuator Board Complete Adjustment Front Panel Assembly None Required Low Voltage Power Supply Complete Adjustment TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 124: Adjustment Dependencies

    Adjustment Procedures Table 5-1: Adjustments Required for Module Replaced (Cont.) Module Replaced Adjustment Required CPU Assembly Complete Adjustment DSP Assembly None Required Display Assembly None Required Auxiliary Power Supply None Required Backplane Assembly None Required Monitor Assembly None Required If a firmware update is done, a complete adjustment must be done. Adjustment Dependencies Some adjustments depend on the successful prior completion of other adjust- ments.

  • Page 125: Equipment Required

    Adjustment Procedures The test equipment required to adjust the TDS 410, TDS 420, & TDS 460 Equipment Required Digitizing Oscilloscopes is listed here. Table 5-3: Test Equipment, Fixtures, and Supplies Item Number and Minimum Requirements Example Purpose Description Computer system...

  • Page 126: Adjustment Instructions

    16 Graticule, external TEKTRONIX TEKTRONIX 067-0206-00 A26 Monitor linearity 067-0206-00 check 17 Generator, pulse High amplitude pulse with TEKTRONIX PG 506A Cali- Software based variable amplitude of 60 V bration Generator adjustments and probe to 100 V. adjustment 18 Pulser, tunnel diode...

  • Page 127: Software Installation

    Type install. Install asks you to specify the hard disk on which to install the adjustment software. It also prompts you to specify several GPIB-card configuration parameters. d. The adjustment software is installed in a directory called TDS400.ADJ . TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 128: Software-Based Adjustments

    Adjustment Procedures 3. Store your installation disk: Remove your installation disk and store it in a secure place. Software-Based Adjustments Equipment Required: All items that are listed for “Software-based Adjust- ments” under “Purpose” in Table 5-3 on page 5-5. 1. Hook up the oscilloscope: a.

  • Page 129: Probe Adjustment

    Press AUTOSET. Set the horizontal SCALE to 200 Press SET LEVEL TO 50%. Press VERTICAL MENU. Push the main-menu button Bandwidth. Then push the side-me- nu button 20 MHz. Press SHIFT. Then press ACQUIRE MENU. TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 130: Compensate The Probe

    Adjustment Procedures Press the main-menu button Mode. Then press the side-menu button Hi Res. Figure 5-2: Performing Probe Compensation 2. Compensate the Probe: a. Locate the probe compensation hole in the side of the probe body. b. Using the probe compensation tool, adjust the probe for best square wave compensation (flat as possible across the top of the waveform).

  • Page 131: Measure The Probe Bandwidth

    Measure the Probe Bandwidth Equipment Required (TDS 410 and TDS 420 Only): One medium-frequen- cy sine wave generator (Item 12), one 50 precision coaxial cable (Item 9),...

  • Page 132: Figure 5-5: Initial Test Hookup (Tds 410 And Tds 420 Only)

    BNC Adapter Figure 5-6: Initial Test Hookup (TDS 460 Only) b. Hook up test-signal source: (TDS 410 and TDS 420 Only) Connect the output of a medium- frequency sine wave generator, through a 50 precision cable, to a BNC female to female BNC adapter (see Figure 5-5).
  • Page 133 600 mV (6 division), 6 MHz reference signal. (TDS 410 and TDS 420 Only) Set the horizontal SCALE to 2 ns and set the frequency of the generator to 150 MHz. (TDS 460 Only) Set the horizontal SCALE to 1 ns and set the frequency of the generator to 350 MHz.

  • Page 134: Adjust The Probe - High Frequency Response

    Do not perform this procedure if you have successfully completed Measure the Probe Bandwidth. Probe adjustment is complete. Equipment Required (TDS 410 and TDS 420 Only): One pulse generator (Item 17), one 50 precision cable (Item 9), one BNC female to female BNC...

  • Page 135: Figure 5-8: Initial Test Hookup (Tds 410 And Tds 420 Only)

    Follow the instructions in Figure 5-7 to remove the probe body covers. Calibration Generator Output Figure 5-8: Initial Test Hookup (TDS 410 and TDS 420 Only) Calibration Generator Output Precision Cable Tunnel Diode Pulser 10X attenuator Figure 5-9: Initial Test Hookup (TDS 460 Only) b.
  • Page 136 Press CLEAR MENU. 2. Adjust the Probe: a. Display and store the reference signal: (TDS 410 and TDS 420 Only) Set the high-amplitude output of the generator for a six division square wave on screen (see Figure 5-10). (TDS 460 Only) Set the high-amplitude output of the generator for 60 to 100 V at the input to the tunnel diode pulser (see Fig- ure 5-11).

  • Page 137: Figure 5-10: Probe Test Hookup (Tds 410 And Tds 420 Only)

    (TDS 410 and TDS 420 Only) Disconnect the calibration genera- tor at CH 1. (TDS 410 and TDS 420 Only) Connect the output of the calibra- tion generator through a BNC female to BNC female adapter to a BNC to probe tip adapter.

  • Page 138: Figure 5-12: Locations Of Probe Adjustments

    Adjustment Procedures Install the probe on CH 1. Plug the probe tip from the probe into the BNC to probe tip adapt- Press the main-menu button Coupling. Then press the side-me- nu button to toggle to 1 M coupling. Press HORIZONTAL MENU. Press the main-menu button Trigger Position;...
  • Page 139 3. Disconnect the hookup: Unplug the probe from the BNC to probe tip adapter. Reverse the instructions in Figure 5-4, page 5-11, to reinstall the retractable probe tip. 5 19 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...

  • Page 140: Monitor Assembly Adjustment

    Adjustment Procedures Do not do this procedure when performing a routine adjustment. Only Monitor Assembly do this procedure if the display on the monitor assembly has become Adjustment unsatisfactory. See Complete Adjustment on page 5-3. CAUTION High voltages are accessible on the A26 Monitor assembly. Do not touch the circuit board when the power is on.
  • Page 141 V. SYNC (R453) V. LIN (R462) H. PHASE (463) Left Side of Instrument H. SYNC (R473) BRITE (R482) VID. GAIN (R483) Front of Instrument Figure 5-14: Monitor Adjustment Locations 5 21 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 142 Adjustment Procedures Adjust R482 until the background raster lines in the 5% lumi- nance patch (see Figure 5-15) disappear while the lines in the 10% luminance patch are visible. 4. Adjust the display contrast: a. Display the White Box test pattern: Press the center main-menu button to display the main-menu.
  • Page 143 6. Adjust the display position and size: a. Display the 16 12 test pattern: Press the center main-menu button to display the main-menu. Press the main-menu button Tests. 5 23 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 144 Adjustment Procedures Repeatedly press the side-menu button –more– until 16x12 appears in the side menu. Push 16x12. Press the main-menu button EXECUTE. Then press the side-me- nu button Ok Confirm Run Test. b. Make the position and size adjustment: Place the external graticule (16) over the front of the CRT. Locate the R443 (V.
  • Page 145 Adjustment Procedures Test Pattern on the CRT Limit Lines External Graticule with Marked Limit Lines Test Pattern Figure 5-17: External Graticule Limit Lines 5 25 TDS 410, TDS 420 & TDS 460 Technical Reference Manual...
  • Page 146 Adjustment Procedures 7. Adjust geometry and linearity: a. Set up for geometry and linearity adjustment: If you have not per- formed the display position adjustment, perform step 6. b. Make the linearity adjustment: Locate R462 (V. LIN) (see Figure 5-14). Adjust R462 so that alternate vertical lines of the displayed 16 12 test pattern are within the limits marked on the external grati- cule.

  • Page 147: Maintenance

    Maintenance...

  • Page 148: Maintenance Information

    Maintenance Information This section contains the information needed to do periodic and corrective maintenance on the TDS 410, TDS 420, & TDS 460 Digitizing Oscilloscopes. Specifically, the following subsections are included: Maintenance Information — This subsection. It includes this introduc- tion plus general information on preventing damage to internal modules when doing maintenance.

  • Page 149: Preventing Esd

    Maintenance Information Section 9, Diagrams , contains a block diagram using individual modules as blocks and an interconnection diagram showing connections between the modules. Section 10, Mechanical Parts List, lists all field replaceable modules by part number. Preventing ESD CAUTION Static discharge can damage any semiconductor component in this oscilloscope.

  • Page 150: Table 6-1: Relative Susceptibility To Static-Discharge Damage

    2 = 200 to 500 V 7 = 400 to 1000 V (est.) 3 = 250 V 8 = 900 V 4 = 500 V 9 = 1200 V 5 = 400 to 600 V TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 151 Maintenance Information Maintenance...

  • Page 152: Inspection And Cleaning

    Inspection and Cleaning Inspection and Cleaning describes how to inspect for dirt and damage on, and how to clean the exterior and interior of, the TDS 410, TDS 420, & TDS 460 Digitizing Oscilloscopes. Inspection and cleaning are done as preventive maintenance.

  • Page 153: Inspection - Exterior

    Inspection and Cleaning Inspection — Exterior Inspect the outside of the oscilloscope for damage, wear, and missing parts, using Table 6-2 as a guide. Oscilloscopes that appear to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance.

  • Page 154: Inspection - Interior

    Wiring and cables Loose plugs or connectors. Burned, Firmly seat connectors. Repair or replace broken, or frayed wiring. modules with defective wires or cables. Chassis Dents and deformations Straighten, repair, or replace chassis. TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 155: Cleaning Procedure - Interior

    Inspection and Cleaning Cleaning Procedure — Interior If, after doing steps 1 and 2, a module is clean upon inspection, skip the remaining steps. 1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi). 2. Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol (75% solution) and rinse with a warm deionized water.

  • Page 156: Removal And Installation Procedures

    Three module locator diagrams for finding all the modules in this oscilloscope. WARNING Before doing any procedure in this subsection, disconnect the power cord from the line voltage source. Failure to do so could cause serious injury or death. TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 157: List Of Modules

    Removal and Installation Procedures List of Modules Section 10 lists all modules. Cable Removal Usually cables are partially or completely removed as in the course of remov- ing a module they plug into. However, all field replaceable cables are modules and can be replaced by doing the Access Procedure.
  • Page 158 . The Disassembly for Cleaning procedure does not use the access procedure. NOTE Read the cleaning procedure before disassembling the oscilloscope for cleaning. Figure 6-1: Oscilloscope Orientation 6 11 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 159: Table 6-4: Tools Required For Module Removal

    Removal and Installation Procedures Equipment Required — The following tools are required to completely disassemble the oscilloscope into its modules. The tools required to remove an individual module are listed in the first step of its procedure. All the tools are standard tools readily available from tool suppliers. Table 6-4: Tools Required for Module Removal Item Name...

  • Page 160: Access Procedure

    If you have located the module to be replaced in Figure 6-4, you are removing one of the field replaceable cables. Do the following sub- parts: Go to Table 6-7 on page 6-18. 6 13 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 161: Table 6-5: Access Instructions For Modules In Figure

    Removal and Installation Procedures Find the procedure that includes the name of the cable noted in step 1. Perform the instructions listed in the table for that procedure to access and remove the cable. Follow the instructions listed in the table for the reinstallation of the cable.
  • Page 162 Gaskets (4) Menu Button Trim Ring Front Cover (Optional) Probe Code Flex Assembly A06 Front Panel Assembly Front Panel Knobs & Shafts Figure 6-2: Cabinet and Front-Panel Mounted Modules 6 15 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 163: Table 6-6: Access Instructions For Modules In Figure

    Removal and Installation Procedures Table 6-6: Access Instructions for Modules in Figure 6-3 Procedure Listing Module to be Page Access Instructions Removed A05 Attenuator Assembly and 6-34 Do Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Shield Gaskets (page 6-28). Do A08 Jumper Board Assembly, D1 Bus, and Board Sup- ports , listed as procedure number 3 in this table.
  • Page 164 A03 CPU Assembly Battery (2) Board Mounting Support (3) Screw Battery Clamp (2) A04 Acquisition Assembly Mounting Screw A08 Jumper Assembly Attenuator A05 Attenuator Shield Assembly Figure 6-3: Internal Modules 6 17 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 165 Removal and Installation Procedures Table 6-7: Access (and Removal) Instructions for Cables in Figure 6-4 Name of Cable Access and Removal Instructions Backplane to Acquisition Find the procedure A01 Backplane Assembly and its Mount in Table 6-6. Backplane to Attenuator Follow the access instructions found there to access and remove the backplane assembly.

  • Page 166: Table 6-7: Access (And Removal) Instructions For Cables In Figure 6-4

    Unplug the cable from the monitor. See Figure 6-4 for jack location. Unplug the cable from the auxiliary power supply. See Fig- ure 6-4 for jack location. Reverse these instructions to install the replacement cable. 6 19 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 167 Removal and Installation Procedures Aux Supply to Low Line Filter to Voltage Power Supply to Ground Lug Ground Lug Aux Supply to Line Filter Backplane to Aux Power Supply Monitor Cable Backplane to Low Volt. Power Supply D1 Bus Backplane to Acquisition (Soldered at Backplane) Backplane to...

  • Page 168: Procedures For Module Removal And Installation

    Rotate the knob while lightly pushing inwards until the shaft slips into its receptacle. Push the knob all the way in to seat the knob assem- bly. 6 21 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 169 Removal and Installation Procedures When reinstalling the knobs, note there are two sizes. Be sure to reinstall the proper size knob in the proper location. Figure 6-5: Knob and Shaft Removal 6 22 Maintenance...

  • Page 170: Line Fuse And Line Cord

    3. Remove line cord: a. Find the line cord on the rear cover. (See Figure 6-6.) b. Now, remove the line-cord retaining clamp by first unplugging the line cord from its receptacle. 6 23 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 171: Front Cover, Rear Cover, Cabinet, Rear Emi Gasket, And Cabinet Handle And Feet

    Removal and Installation Procedures c. Next, grasp both the line cord and the retaining clamp and rotate them 90 degrees counter-clockwise. d. Pull the line cord and clamp away to complete the removal. 4. Remove line fuse: Find the fuse cap on the rear panel. (See Figure 6-6.) Now, remove the fuse cap by turning it counter clockwise using a flat-bladed screwdriver, and remove the line fuse.
  • Page 172 Figure 6-7: Front Cover, Rear Cover, Cabinet, EMI Gasket, and Cabinet Handle and Feet Removal c. While holding the handle hubs pulled out, lift the cabinet upwards to slide it off the oscilloscope. 6 25 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 173 See step 7 to reinstall the handle assembly if it was removed. If installing a new handle assembly, also do the following: Find the label that matches your model of oscilloscope (TDS 410, TDS 420, or TDS 460). 6 26 Maintenance...
  • Page 174 Remove the covering from the back of the sticky-back label, align it to the handle, and press firmly to install. e. See the procedure Line Fuse and Line Cord to reinstall the line cord, which completes the oscilloscope reassembly. 6 27 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 175: Trim Ring, Menu Elastomer, Menu Buttons, And Front Emi Gaskets

    Removal and Installation Procedures Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gaskets 1. Assemble equipment and locate modules to be removed: a. Have handy a wooden spudger (Item 9). b. Locate the modules to be removed in the locator diagram Cabinet and Front-Panel Mounted Modules , Figure 6-2.
  • Page 176 TDS 420, or TDS 460). Remove the covering from the back of the sticky-back label, align it to the handle (see Figure 6-7 on page 6-25), and press firmly to install. 6 29 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 177 Removal and Installation Procedures Spudger EMI Gaskets (4) Figure 6-9: EMI Gasket Removal and Installation See the following procedures to install those modules removed by the access procedure: Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, and Cabinet Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-23) to reinstall the line cord, which completes the oscilloscope reassembly...

  • Page 178: A06 Front-Panel Assembly, Esd Shield, And Menu Flex And Probe Code Flex Circuits

    Then pull the ESD shield off the left edge of the front panel to remove. (The shield snaps on and off.) 6 31 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 179 Removal and Installation Procedures Menu Flex Circuit Front Panel Assembly ESD Shield Probe Code Flex Circuit Figure 6-10: A06 Front-Panel Assembly, ESD Shield, and Menu Flex and Probe Code Flex Circuits Removal 6. Remove the Probe Code Flex Circuit: If replacing or cleaning the probe code flex circuit, remove the four T-15 Torx screws and lift it away from the front of the main chassis.
  • Page 180 10. Reinstallation: a. If the menu flex circuit was removed in step 9, do the following sub- parts to install a new circuit (reference Figure 6-10 on page 6-32): 6 33 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 181 Removal and Installation Procedures DO NOT touch the contacts on the menu flex circuit with your bare fingers. You should wear clean cloth gloves that are free of lint when installing the menu flex circuit on the front chassis. Wipe the front of the chassis using isopropyl alcohol and a clean, lint-free cloth.
  • Page 182 Lift the attenuator assembly away from the oscilloscope to complete its removal. A05 Attenuator Assembly Mounting Screws (4) Attenuator Shield Figure 6-12: A05 Attenuator Removal 6 35 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 183 Removal and Installation Procedures 5. Reinstallation: a. Perform in reverse order substeps 4a and 4c, reversing the removal instructions in each substep to reinstall the assembly. b. See the following procedures in the order listed to replace modules removed by the access procedure: A06 Front-Panel Assembly, ESD Shield, and Menu Flex and Probe Code Flex Circuits on page 6-31 Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gas-...
  • Page 184 Remove the three T-15 Torx screws securing the monitor assem- bly to the bottom of the main chassis . Return the digitizing oscillo- scope to the orientation established in step 2. 6 37 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 185 Removal and Installation Procedures WARNING High-voltage is present on the anode lead. It is NOT necessary to unplug the anode from the monitor when removing or replacing the monitor module; therefore, do not do so. d. Remove the three T-15 Torx assembly to the top of the chassis.
  • Page 186 Removal and Installation Procedures A26 Monitor Assembly EMI Clip Monitor Frame Mounting Screws (6) Figure 6-13: A26 Monitor Assembly Removal 6 39 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 187: A08 Jumper Board Assembly, D1 Bus, And Board Supports

    Removal and Installation Procedures 5. Reinstallation: a. Perform in reverse order 4a-4f, reversing the removal instructions in each step and substep to reinstall the assembly. If the EMI clips on the monitor are replaced, be sure to center them in the notched area of the top and bottom of the chassis.

  • Page 188: A03 Cpu Assembly

    Unplug the CPU to front panel cable from the front-panel assembly at J101. b. Remove the single T-15 Torx screw from the bracket covering the unused rear-panel slot at the inside rear corner of the main chassis. 6 41 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 189 Removal and Installation Procedures c. Remove the single T-15 Torx screw from the bracket that secures the CPU assembly at the inside rear corner of the main chassis. d. Working from the rear of the oscilloscope, remove the single T-15 Torx screw from the bracket that secures the CPU assembly to the rear of the main chassis .

  • Page 190: A02 Display Assembly

    Working from the rear of the oscilloscope, remove the single T-15 Torx screw from the bracket that secures the display assembly to the rear of the main chassis . 6 43 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 191 Removal and Installation Procedures CAUTION Note that the screw removed in step d is shorter (0.250 inch/ 6.35 mm) than the screws removed in substeps b and c (0.625 inch/15.875 mm). Be sure to install the short screw in its proper location when reinstalling the board.

  • Page 192: A09 Dsp Assembly

    (0.625 inch/15.875 mm). Be sure to install the short screw in its proper location when reinstalling the board. Installation of the long screw will damage the DSP assembly circuit board. 6 45 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 193: A01 Backplane Assembly And Its Mount

    Removal and Installation Procedures Mounting Screw (Short), DSP Assembly Mounting Screw, Display Assembly Mounting Screw, DSP Assembly D1 Bus (Removed by the Access Procedure) A09 DSP Assembly Figure 6-17: A09 DSP Assembly Removal e. Grasp the board by its edge and pull outward to unplug it from J5 of the backplane assembly to complete the removal.
  • Page 194 Unplug the backplane to front panel cable at J8 of the backplane assembly. Unplug the backplane to low voltage power cable at J7 of the back- plane assembly. 6 47 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 195 Removal and Installation Procedures Mounting Screw (5) A01 Backplane Assembly Lift latches (4) to release the board. Figure 6-18: A01 Backplane Assembly and its Mount Removal g. Remove the five T15 Torx screws mounting the board to the chas- sis. h.

  • Page 196: Back-Up Batteries

    C, or incinerate. Replace batteries with the part number listed in the Replaceable Parts List, Section 10, only. Use of another battery presents a risk of fire or explosion. 6 49 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 197 Removal and Installation Procedures Dispose of used batteries promptly. Small quantities of used batter- ies may be disposed of in normal refuse. Keep away from children. Do not disassemble, and do not dispose of in fire. Disconnection of the batteries from their plugs results in the loss of all saved front panel setups and saved waveforms.

  • Page 198: A25 Low Voltage Power Supply And Its Mount

    When releasing the low voltage power supply from its mount, take care not to push on the board components. Rather, push on the board edge when performing the following step and its substeps. 6 51 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 199 Removal and Installation Procedures 4. Remove the low voltage power supply: a. Unplug the cable coming from the backplane assembly at J2. b. Unplug the cable coming from the AUX power supply at J1. c. Working through the opening created when the fan was removed ( Access Procedure), remove the T-15 Torx screw at the center of the power supply board.
  • Page 200 Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-28) to reinstall the line cord, which completes the oscilloscope reassembly 6 53 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 201: Fan And Fan Mount

    Removal and Installation Procedures Fan and Fan Mount 1. Access the module: Be sure you have performed the Access Procedure on page 6-13 and removed the modules as instructed. 2. Assemble equipment and locate modules to be removed: Locate the modules to be removed in the locator diagram Internal Modules , Figure 6-3, page 6-17.
  • Page 202 Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-28) to reinstall the line cord, which completes the oscilloscope reassembly 6 55 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 203: Line Filter

    Removal and Installation Procedures Line Filter 1. Access the module: Be sure you have performed the Access Procedure on page 6-13 and removed the modules as instructed. 1. Assemble equipment and locate modules to be removed: Have handy a screwdriver with a size T-15 Torx tip (Items 1 and 2).
  • Page 204 Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-28) to reinstall the line cord, which completes the oscilloscope reassembly 6 57 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 205: A07 Auxiliary Power Supply

    Removal and Installation Procedures A07 Auxiliary Power Supply 1. Access the module: Be sure you have performed the Access Procedure on page 6-13 and removed the modules as instructed. 2. Assemble equipment and locate modules to be removed: a. Have handy a screwdriver with a size T-15 Torx tip (Items 1 and 2) and a 5/16 inch nut-driver (Item 7).
  • Page 206 See the following procedures in the order listed to replace modules removed by the access procedure: A08 Jumper Board Assembly, D1 Bus, and Board Supports on page 6-40 (board supports and D1 bus only) 6 59 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 207: A04 Acquisition Assembly

    Removal and Installation Procedures A06 Front-Panel Assembly, ESD Shield, and Menu Flex and Probe Code Flex Circuits on page 6-31 Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gaskets on page 6-28 Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, and Cabi- net Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-28) to reinstall the line cord,...
  • Page 208 Handle and Feet (page 6-24) to reinstall the cabinet and rear cover Line Fuse and Line Cord (page 6-28) to reinstall the line cord, which completes the oscilloscope reassembly 6 61 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 209: Main Chassis

    Removal and Installation Procedures Main Chassis 1. Remove the main chassis: Since the removal of the main chassis requires the removal of virtually all modules, perform the procedure Disassembly for Cleaning that follows. 2. Reinstallation: See reinstallation instructions in Disassembly for Cleaning. This procedure is for disassembly of the digitizing oscilloscope into its Disassembly for individual modules so they can be cleaned.

  • Page 210: A05 Attenuator Assembly And Shield

    A02 Display Assembly (page 6-43) g. A03 CPU Assembly (page 6-41) h. Line Fuse and Line Cord (page 6-23) A08 Jumper Board Assembly, D1 Bus, and Board Supports (page 6-40) 6 63 TDS 410, TDS 420 & TDS 460 Service Manual...

  • Page 211: A26 Monitor Assembly

    Removal and Installation Procedures Line Filter (page 6-56) k. A07 Auxiliary Power Supply (page 6-58) A26 Monitor Assembly (page 6-43) m. A25 Low Voltage Power Supply and its Mount (page 6-51) n. Fan and Fan Mount (page 6-54) o. Trim Ring, Menu Elastomer, Menu Buttons, and Front EMI Gaskets (page 6-28) p.

  • Page 212: Troubleshooting

    If a module needs to be replaced, follow the Removal and Installation Procedures located in this section. If servicing a TDS 410, follow the procedures for the TDS 420, but ignore all references to CH 3 and CH 4.

  • Page 213: Firmware Updates

    Troubleshooting Firmware updates are easy to do. Simply install the firmware disks on your Firmware Updates PC and follow the instructions in the README file located on the first disk. The firmware update kit is listed as an optional accessory in Section 10. NOTE You must set both switches of the Protection switch to the unpro- tected position before updating the firmware.

  • Page 214: Troubleshooting Equipment

    DB-25 adaptor, null modem adaptor, gender changer adaptor, and an extension cable to connect the console port to your personal computer (see Figure 6-26). 2. Prerequisites: Power off the oscilloscope. 6 67 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 215 Troubleshooting 3. Accessing J3: Using the Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, and Cabinet Handle and Feet disassembly procedure, remove the cabinet. Table 6-9: Connections for a 9 to 25 Pin Null Modem Cable DB-9 Signals DB-9 Pin DB-25 Pin DB-25 Signals 6 and 8 DSR and DCD...
  • Page 216 Port part number 174-2613-00 Tektronix part number 131-1006-00 Tektronix Tektronix part number part number 200-1170-00 175-2767-00 Tektronix part number 200-1667-00 Tektronix part number 131-0569-00 Figure 6-26: Console Port Connections 6 69 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 217 Troubleshooting Press on the principal power switch on the back of the oscilloscope. Power off and remove the cover using the Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, Press Perform the Low and Cabinet Handle and Can you the ON/STBY Feet removal procedure.
  • Page 218 Troubleshooting Pin 3 Pin 1 Pin 32 Figure 6-28: A03 CPU Board Connector P1 6 71 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 219 Troubleshooting This procedure assumes that the oscilloscope is up and running and you can read the display. Select the extended diagnostics Does menu and run all the tests (see the display Are any failures The oscilloscope is ok. the discussion of the diagnostics report any reported? on page 6-65).
  • Page 220 Cable Cable Cable Jumper Panel Board Cables Cal Initialization Cpu/Dsp or AT bus Cpu/Dsp/Dsy or D1 Cpu/Dsp/Dsy or AT Cpu/Attn or I2C bus Attn Cpu/Acq, D1/I2C Acq/Attn Fp/Cpu 6 73 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 221 Troubleshooting Use this procedure to troubleshoot the Low Voltage Power Supply. Is the Press principal principal power power switch S1 to switch (S1) in the on the on (in) position. (in) position? Press principal power switch S1 to the off (out) position. Is line Disconnect the cable from Does the fuse...
  • Page 222 J2 Pin Minimum Output Maximum Output +5.1 V +5.05 V +5.15 V +15 V +14.85 V +15.15 V –6.4 V –6.35 V –6.45 V –15 V –14.85 V –15.15 V 6 75 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 223 Troubleshooting Use this procedure to troubleshoot a power supply overload problem. CAUTION Turn the oscilloscope power off before removing a board or disconnecting a cable. Remove loads one at a time (remove each plug-in circuit board and disconnect cables from the A01 Backplane).
  • Page 224 6 and 7 5.5 A –15 V 1 and 2 0.75 A Pin 1 A25 Low Voltage Power Supply Figure 6-32: A25 Low Voltage Power Supply Module (Right Side) 6 77 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 225 Troubleshooting This procedure helps you determine whether the A26 Monitor or the A02 Display module is bad. Replace the pins 2 and 4 of J440 A26 Monitor have signals similar to Assembly. Figure 6-34? the display legible but the horizontal and/or vertical sync do not look Power the oscilloscope off and...
  • Page 226 60 Hz Rate Figure 6-34: Horizontal and Vertical Sync Signals White Level J2 pin 7 (Video) Black Level Blanking Level Figure 6-35: A Video Signal with White, Black, and Blanking Levels 6 79 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 227 Troubleshooting J440 Figure 6-36: A26 Monitor Connector J440 Pin 1 Pin 1 Figure 6-37: A07 Auxiliary Power Connectors J4 and J7 6 80 Maintenance...
  • Page 228 Troubleshooting Pin 1 Figure 6-38: A02 Display Connector J2 6 81 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 229 Troubleshooting Use this procedure to determine if the A03 CPU or the A06 Front Panel module is bad. Turn on the principle POWER switch. Do all of the front panel Press the LEDs turn on and then ON/STBY button. turn off a short time later? the correct the front...
  • Page 230 Nominal Voltage J101 Pins 2 and 4 5.1 V J106 Pin 1 15 V J106 Pin 2 5.1 V J106 Pin 4 –5 V J106 Pin 5 –15 V 6 83 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 231 Troubleshooting Use this procedure to isolate a problem between the A04 Acquisition, A08 Jumper, and A05 Attenuator boards. This procedure assumes that the oscilloscope is not displaying and/or not triggering properly on one or more channels. It also assumes that the power-up diagnostic fails with FAIL++Acq, FAIL++Attn, FAIL++Cpu/Acq..., or FAIL++Acq/Attn messages.
  • Page 232 Figure 6-42: A08 Jumper and A05 Attenuator Boards Signal Locations Table 6-14: Channel and P1 Signal Locations Channel Trigger Vertical Vertical Inverted Number P1 Pin Number P1 Pin Number P1 Pin Number 6 85 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 233 Troubleshooting Use this procedure to check the power to the A04 Acquisition and A05 Attenuator boards. Using Table 6-16 and Perform the Low Figure 6-44, are the Voltage Power Supply A04 Acquisition board troubleshooting power supply voltages procedure. Using Table 6-15 and Perform the Low Figure 6-42, are the Voltage Power Supply...
  • Page 234 Troubleshooting Acquisition Board Pin 1 Figure 6-44: A04 Acquisition Board Power Connector 6 87 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 235 Troubleshooting Use this procedure to troubleshoot the A01 Backplane board. Press the ON/STBY button. Are the Does the Replace the voltages at U1–U4 oscilloscope A01 Backplane ok (see Table 6-17 power up? module. and Figure 6-46)? Disconnect P2 (between the A07 Auxiliary Power and A25 Low Voltage Power Are the...
  • Page 236 Nominal Voltage Minimum Voltage Maximum Voltage +15 V +14.25 V +15.75 V +5 V +5.05 V +5.15 V –5 V –5.05 V –5.2 V –15 V –14.85 V –15.15 V 6 89 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 237 Troubleshooting Pin 1 Pin 1 Pin 1 Pin 1 Pin 1 Figure 6-46: A01 Backplane Module 6 90 Maintenance...
  • Page 238 Power on the up normally? normally? oscilloscope. The A01 Backplane Repeat the procedure and/or contact was bad. the local Tektronix service center. Figure 6-47: I2C Isolation Troubleshooting Procedure 6 91 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 239 Troubleshooting Use this procedure when troubleshooting with the console. Power off the oscilloscope. Using the Front Cover, Rear Cover, Cabinet, Rear EMI Gasket, and Cabinet Handle and Feet disassembly procedure, remove the cabinet. Using the Console Port Set Up procedure, connect the console-port cable to J3 on the A03 CPU module.
  • Page 240 Options...

  • Page 241: Options And Accessories

    Options and Accessories This section describes the various options as well as the standard and option- al accessories that are available for the TDS 410, TDS 420, and TDS 460 Digitizing Oscilloscopes. Options include: Options Option 02: Front Cover and Pouch With this option, Tektronix ships a front cover and pouch with the instrument.
  • Page 242 Trigger), and Option 2F (Advanced DSP Math). Options A1–A5: International Power Cords Besides the standard North American, 110 V, 60 Hz power cord, Tektronix ships any of five alternate power cord configurations with the oscilloscope when ordered by the customer.
  • Page 243 Options and Accessories Option 1K: K212 Instrument Cart With this option, Tektronix ships a three tray instrument cart (the K212). Option 1P: HC100 4 Pen Plotter With this option, Tektronix ships a four-color plotter designed to make wave- form plots directly from the digitizing oscilloscope without requiring an external controller.

  • Page 244: Standard Accessories

    Option and Accessories The following standard accessories are included with the digitizing oscillo- Standard scope: Accessories Table 7-2: Standard Accessories Accessory Part Number User Manual 070-8034-02 Programmer Manual 070-8709-03 Reference 070-8035-02 Performance Verification 070-8721-01 U.S. Power Cord 161-0230-01 Probes (qty. two) P6138 10X Passive P6138 (single unit) Probe Accessories...

  • Page 245: Optional Accessories

    Options and Accessories You can also order the following optional accessories: Optional Accessories Table 7-4: Optional Accessories Accessory Part Number TDS 410, TDS 420, & TDS 460 Service Manual 070-8036-02 Plotter (GPIB and Centronics Standard) HC100 Plotter (Centronics Standard) HC200...
  • Page 246 Option and Accessories A6501 Buffer Amplifier (active fixtured), 1 GHz, 1 M 10X. P6501 Option 02: Microprobe with TekProbe power cable (active fixtured), 750 MHz, 1 M 10X. AM 503S—DC/AC Current probe system, AC/DC. Uses A6302 Current Probe. AM 503S Option 03: DC/AC Current probe system, AC/DC. Uses A6303 Current Probe.
  • Page 247 The following optional accessories are Tektronix software products recom- mended for use with your digitizing oscilloscope: Table 7-6: Accessory Software Software Part Number EZ-Test Program Generator S45F030 Wavewriter: AWG and waveform creation S3FT400 LabWindows S3FG910 TDS 410, TDS 420 & TDS 460 Technical Reference...
  • Page 248 Option and Accessories Warranty Information Check for the full warranty statements for this product, the probes, and the products listed above on the back of each product manual’s title page. Options...
  • Page 249 Electrical Parts List...

  • Page 250: Replaceable Electrical Parts List

    The modules that make up this instrument are often a combination of me- chanical and electrical subparts. Therefore, all replaceable modules are listed in Section 10, Mechanical Parts List. Refer to that section for part numbers when using this manual. TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 251 Replaceable Electrical Parts List Electrical Parts List...
  • Page 252 Diagrams...
  • Page 253 The tilde (~) preceding a signal name indicates that the signal performs its intended function when in the low state. Other standards used in the preparation of diagrams by Tektronix. Inc are: Tektronix Standard 062–2476 Symbols and Practices for Schematic Drafting ANSI Y14.159–1971 Interconnection Diagrams...
  • Page 254 14 PINS 5 PINS FRONT PANEL A1W1 ATTENUATOR A1W2 CH 1 J101 CH 2 18 PINS CH 3 (TDS 420 & TDS 460 CH 4 ONLY) 34 PINS J102 JUMPER 34 PINS LOW VOLTAGE PWR SUPPLY 20 PINS AUX TRIG 34 PINS <6V...
  • Page 255 25 PINS COMPATIBLE COMPATIBLE P1 & P2 SERPAR 50 PINS 98 PINS 98 PINS 8 PINS DISPLAY 22 PINS 10 PINS J901 BACKPLANE 10 PINS MONITOR Figure 9-1: TDS 400 Interconnections (Cont.) TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 256 CH 1 ATTENUATORS CH 2 ACQUISITION JUMPER SYSTEM CH 3 (TDS 420 & TDS 460 ONLY) CH 4 PREAMPS (TDS 420 & TDS 460 ONLY) ATTENUATOR PROBE CODING ACQUISITION FRONT PAN- INTERFACE SWITCHES MENU SWITCHES FRONT PAN- BEZEL BUTTON LEDS...
  • Page 257 RS-232 PORT PROCESSOR SYSTEM GPIB IEEE 488 PORT MONITOR ASSEMBLY VID- DISPLAY VIDEO MONITOR 7V, 2A FUSED OPTION 13 RS-232 DTE PORT CENTRON- SERPAR COMPATIBLE Figure 9-2: TDS 400 Block Diagram (Cont.) TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 258 Diagrams...
  • Page 259 Mechanical Parts List...

  • Page 260: Replaceable Parts List

    This section contains a list of the modules that are replaceable for the TDS 400. Use this list to identify and order replacement parts. Replacement parts are available from or through your local Tektronix, Inc. Parts Ordering service center or representative.

  • Page 261: Using The Replaceable Parts List

    Replaceable Parts List The tabular information in the Replaceable Parts List is arranged for quick Using the retrieval. Understanding the structure and features of the list will help you find Replaceable Parts the all the information you need for ordering replacement parts. List Item Names In the Replaceable Parts List, an Item Name is separated from the description...
  • Page 262 PO BOX 511 11716–2501 70903 COOPER BELDEN ELECTRONICS WIRE AND CABLE SUB OF COOPER INDUSTRIES INC 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON OR 97077–0001 PO BOX 500 10 3 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 263 10 4 Mechanical Parts List...
  • Page 264 SCR,ASSEM WSHR:6–32 X 0.375,PNH,STL CD PL 0KB01 ORDER BY DESC (TDS410 ONLY) –17 259–0085–00 FLEX CIRCUIT:PROBE CODE 80009 259008500 –18 348–1258–00 SHLD,GASKET,ELE:2 LAYER,0.094 X 0.188 X 80009 348125800 8.750 10 5 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 265 Fig. & Serial Index Tektronix Effective Mfr. Part No. Dscont 12345 Name & Description Code Mfr. Part No. 10–1–19 672–1365–02 CIRCUIT BD ASSY:FRONT PANEL ASSY 80009 672136502 (TDS420/460 ONLY) 672–1430–00 CIRCUIT BD ASSY:FRONT PANEL ASSY 80009 672143000 (TDS410 ONLY) –20 614–0895–00...
  • Page 266 Figure 10-1: External and Front Panel Modules 10 7 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 267 Fig. & Serial Index Tektronix Effective Mfr. Part No. Dscont 12345 Name & Description Code Mfr. Part No. 10–2–1 426–2436–00 B010100 B020499 FRAME,CRT FLTR:POLYCARBONATE TK1163 ORDER BY DESC (TDS420 ONLY) 426–2436–01 B020500 FRAME,CRT FLTR:POLYCARBONATE TK1163 ORDER BY DESC (TDS420 ONLY) 426–2436–00...
  • Page 268 B020100 CIRCUIT BD ASSY:ACQUISITION 80009 671168509 (TDS460 ONLY) 671–3087–00 CIRCUIT BD ASSY:ACQUISITION 80009 671308700 (TDS410 ONLY) –21 344–0116–00 RTNR,CAPACITOR:0.625 DIA,STEEL TK1891 E50003–007 –22 671–1683–00 CIRCUIT BD ASSY:JUMPER 80009 671168300 10 9 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 269 Fig. & Serial Index Tektronix Effective Mfr. Part No. Dscont 12345 Name & Description Code Mfr. Part No. 10–2–23 671–1680–02 B010100 B010348 CIRCUIT BD ASSY:ATTENUATOR 80009 671168002 (TDS420 ONLY) 671–1680–03 B010349 B010978 CIRCUIT BD ASSY:ATTENUATOR 80009 671168003 (TDS420 ONLY) 671–1680–04...
  • Page 270 Figure 10-2: Internal Modules 10 11 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 271 Fig. & Serial Index Tektronix Effective Mfr. Part No. Dscont 12345 Name & Description Code Mfr. Part No. 10–3–1 174–2661–00 CABLE,SP,ELEC:18 AWG,AMP TK2469 174–2661–00 –2 174–2282–00 CA ASSY,SP,ELEC: TK2469 174–2282–00 –3 174–2283–00 CA ASSY,SP,ELEC: TK2469 174–2283–00 –4 174–2373–00 CA ASSY,SP,ELEC:2,18 AWG,2.0 L TK2469 174–2373–00...
  • Page 272 Figure 10-3: Cables and Routing 10 13 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 273 Fig. & Serial Index Tektronix Effective Mfr. Part No. Dscont 12345 Name & Description Code Mfr. Part No. STANDARD ACCESSORIES –––––––– ACCESSORY PKG:(2) P6138 1.3M PROBES 070–8034–02 MANUAL,TECH:TUTORIAL/USER 80009 070803402 070–8035–02 MANUAL,TECH:QUICK REF 80009 070803502 070–8036–02 MANUAL,TECH:SERVICE 80009 070803602 070–8709–03...
  • Page 274 (SEE FIGURE 10–1–25) 070–8521–03 MANUAL,TECH:RACKMOUNT 80009 070852103 070–8567–01 MANUAL,TECH:RS–232/CENTRONICS 80009 070856701 (OPTION 13 ONLY) 070–8722–02 MANUAL,TECH:INSTRUCTION 80009 070872202 (OPTION 3P ONLY) 070–8762–00 MANUAL,TECH:USER,VIDEO DISPLAY 80009 070876200 (OPTION 05 ONLY) 10 15 TDS 410, TDS 420 & TDS 460 Service Manual...
  • Page 275 10 16 Mechanical Parts List...

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