Tektronix CSA7404B Service Manual
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Tektronix CSA7404B Service Manual

Communication signal analyzers csa7000b series, digital phosphor oscilloscopes tds7000b series
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Service Manual

CSA7000B Series
Communication Signal Analyzers &
TDS7000B Series
Digital Phosphor Oscilloscopes
(CSA7404B, TDS7704B, TDS7404B,
TDS7254B, & TDS7154B)
071-1227-04
Revision C
This document applies to firmware version 3.0.0
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

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  • Page 1: Service Manual

    Service Manual CSA7000B Series Communication Signal Analyzers & TDS7000B Series Digital Phosphor Oscilloscopes (CSA7404B, TDS7704B, TDS7404B, TDS7254B, & TDS7154B) 071-1227-04 Revision C This document applies to firmware version 3.0.0 and above. Warning The servicing instructions are for use by qualified personnel only.
  • Page 2 Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material.
  • Page 3 Warranty 2 Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.

  • Page 5: Table Of Contents

    ......... 2- - 11 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 6 ..... . . 4- - 121 Optical-to-Electrical Converter Checks (CSA7000B Series Only) ..4- - 125 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 7 ........6- - 89 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 8 Mfr. Code to Manufacturer Cross Index ......10- - 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 9 ......... . 4- -103 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 10 ..6- -34 Figure 6- -20: Hard disk drive removal from cartridge ... . 6- -35 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 11 ........10- -18 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 12 ..... . 6- -5 Table 6- -3: Tools required for module removal ....6- -10 viii CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 13 ......7- -4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 14 Table of Contents CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 15: General Safety Summary

    Avoid Exposed Circuitry. Do not touch exposed connections and components when power is present. Use Proper Fuse. Use only the fuse type and rating specified for this product. CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 16 H CAUTION indicates a hazard to property including the product. The following symbols may appear on the product: CAUTION WARNING Protective Ground Earth Terminal Refer to Manual High Voltage (Earth) Terminal Mains Disconnected Mains Connected Standby ON (Power) OFF (Power) CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 17: Service Safety Summary

    Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. To avoid electric shock, do not touch exposed connections. xiii CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 18 Service Safety Summary CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 19: Environmental Considerations

    This product has been classified as Monitoring and Control equipment, and is Substances outside the scope of the 2002/95/EC RoHS Directive. This product is known to contain lead, cadmium, mercury, and hexavalent chromium. CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 20 Environmental Considerations CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 21: Preface

    I/O port connectors, that is listed in the replaceable parts list of Chapter 10. Safety Symbols and terms related to safety appear in the General Safety Summary found at the beginning of this manual. xvii CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 22: Related Documentation

    Preface Related Documentation The following related manuals are available for this instrument: H CSA7000B & TDS7000B User manual. Tektronix part number 071-1227-XX. H CSA7000B & TDS7000B Reference manual. Tektronix part number 071-0880-XX. H CSA7000, TDS7000, TLA600 & OTS9000 Series Rackmount Kit (Option 1R) Instructions.

  • Page 23: Specifications

    Specifications...
  • Page 25 H You must perform the Signal Path Compensation procedure after the 20-minute warm-up period, and if the ambient temperature changes more than 5 °C (41 °F), repeat the procedure. 1- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 26: Product And Feature Description

    Horizontal Delay. Use delay when you want to acquire a signal at a significant time interval after the trigger point. Toggle delay on and off to quickly compare the signal at two different points in time. 1- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 27: Display Features

    Both vertical and horizontal zoom functions are available. Zoomed waveforms can be aligned, locked, and automatically scrolled. Measurement Features Cursors. Use cursors to take simple voltage, time, and frequency measurements. 1- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 28: Trigger Features

    Toolbar or Menu Bar. You can choose a toolbar operating mode that is optimized for use with the touch screen, or a PC-style menu bar operating mode that is optimized for use with a mouse. 1- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 29: Specification Tables

    <2 GHz 1.5 for f <2 GHz 1.1 for f <3 GHz 2 for f <3 GHz 1.2 for f <6 GHz 2.5 for f <6 GHz 1.3 for f 1- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 30 (3% +(6% × | net offset/1V | )) 4 mV/div to 99.5 mV/div (2.5% +(2% × | net offset/1V | )) 100 mV/div to 1 V/div (2.5% +(2% × | net offset/10V | )) 1- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 31 + 0.08 division V/division] ±[(2.5% +(2% 100 mV/div to 1 V/div | net offset/10V | )) | reading - - net offset | + offset accuracy + 0.08 division V/division] 1- 7 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 32 CSA7404B & TDS7404B SCALE range Bandwidth 2 mV/div to 3.9 mV/div DC to 1 GHz 4 mV/div to 9.9 mV/div DC to 1.25 GHz ≥ 10 mV/div DC to 4 GHz 1- 8 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 33 Settling error at time after step 2 mV/div to 99.5 mV/div, 20 ns:≤2% with ≤1.5 V step 1 ms:≤0.1% 100 mV/div to 1 V/div, 20 ns:≤2% with ≤3 V step 1 ms:≤0.2% 1- 9 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 34 ± (0.5% × | net offset | + 1.5 mV + 0.1 div× V/div setting) 100 mV/div to 1 V/div ± (0.5% × | net offset | + 15 mV + 0.1 div × V/div setting) 1- 10 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 35: Table 1- 3: Horizontal And Acquisition System Specifications

    ≤30 ps between any two channels with the same scale and coupling settings Channel-to-channel crosstalk ≥ 15:1 at rated bandwidth (CSA7404B, TDS7704B, TDS7404B & TDS7254Bonly), ≥80:1 at≤ 1.5 GHz or the rated bandwidth, whichever is less. Assumes two channels with the same scale settings Rise time calculation: A simple formula relating these times to bandwidth for all instruments is not available.
  • Page 36 16,000,000 points (1 or 2 channels only) 32,000,000 points (1 channel only) Option 5M installed 16,000,000 points (3 or 4 channels) 32,000,000 points (1 or 2 channels only) 64,000,000 points (1 channel only) 1- 12 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 37 Option 5M: 327- - 1320 500,000 points Standard: 2- - 8 Option 2M: 8- - 32 Option 3M: 16- - 64 Option 4M: 16- - 64 Option 5M: 32- - 128 1- 13 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 38 | reading | ) RMS ± (0.3/sample rate +2.5 ppm | reading |) peak ± (4 ps +2.5 ppm Average acquisition mode, >100 aver- | reading | ) peak ages, Full bandwidth 1- 14 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 39: Table 1- 4: Trigger Specifications

    Same as DC-coupledlimits for fr e quen- cies < 20 kHz, attenuates signals > 20 kHz LF REJ Same as DC-coupledlimits for fr e quen- cies > 200 kHz, attenuates signals < 200 kHz 1- 15 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 40 Time-qualified runt type Minimum runt width = 340 ps 450 ps Width type Minimum difference between upper and 250 ps lower limits = 225 ps Window type 225 ps 300 ps 1- 16 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 41 Runt width + 330 ps 160 ps 175 ps Width 190 ps 40 ps 175 ps Transition 330 ps 225 ps 175 ps Window 190 ps - - 20 ps 0 ps 1- 17 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 42 250 ns to 12 s plus random holdoff, if enabled. Minimum resolution is 8 ns for settings ≤1.2 s. A dither of 800 ps is added to the holdoff setting 1- 18 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 43: Table 1- 5: Serial Trigger Specifications (Optional On Tds7000B Series)

    Horizontal: 60 degrees left, 60 degrees right Vertical: 60 degrees up, 45 degrees down Displayed intensity levels Each R-G-B input is 6 bits, giving 64 intensity levels of each color component 1- 19 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 44: Table 1- 7: Input/Output Port Specifications

    Miniature phone jacks for stereo microphone input and stereo line output USB ports, two Allows connection or disconnection of USB keyboard and/or mouse while instrument power is on GPIB port IEEE 488.2 standard interface 1- 20 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 45 A or B trigger (selectable) high low (true) ≥2.5 V into open circuit, ≤0.7 V with ≤4 ma sink, ≥1.0 V into 50 Ω load ≤0.25 V into 50 Ω load 1- 21 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 46 - - 1.3 V. The signal amplitude will be correspondingly reduced. Serial data output latency, typical (CSA7000B Series 11 ns 4 ns plus 35.5 clock cycles only) 1- 22 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 47: Table 1- 8: O/E Converter (Csa7000B Series Only)

    1.1 W + (6.5% of W/div setting) 850 nm 2.1 W + (6.5% of W/div setting) 780 nm 2.6 W + (6.5% of W/div setting) O/E converter alone 0.85 W 1- 23 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 48 25 W per division to 125 W per division 780 nm: 28 W per division to 142 W per division All specifications are with the O/E electrical out-to-CH1 input adapter installed. 1- 24 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 49: Table 1- 9: Data Storage Specifications

    (Tektronix part number 159-0046-00, Bussman ABC-8, Littelfuse 314008) 5 mm 20 mm size IEC127, sheet 1, fast acting “F”, high breaking capacity: 6.3 A, 250 V (Tektronix part number 159-0381-00, Bussman GDA 6.3, Littelfuse 21606.3) 1- 25 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 50: Table 1- 11: Mechanical Specifications

    Chassis parts are constructed of aluminum alloy, front panel is constructed of plastic laminate, circuit boards are constructed of glass laminate, and the outer shell is molded and textured from a polycarbonate/ABS blend 1- 26 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 51: Table 1- 12: Environmental Specifications

    5 Hz to 500 Hz, 10 minutes on each axis, 3 axis, 30 minutes total, with floppy disk and compact disk installed Nonoperating 2.28 g from 5 Hz to 500 Hz, 10 minutes on each axis, 30 minutes total, 3 axis 1- 27 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 52: Certifications And Compliances

    If interconnect cables are used, they must be low-EMI shielded cables such as the following Tektronix part numbers or their equivalents: 012-0991-00, 012-0991-01, 012-0991-02 or 012-0991-03 GPIB Cable; 012-1213-00 (or CA part number 0294-9) RS-232 Cable;...
  • Page 53 H Polution Degree 4. Pollution that generates persistent conductivity through conductive dust, rain, or snow. Typical outdoor locations. Pollution Degree Pollution Degree 2 (as defined in IEC 61010-1). Note: Rated for indoor use only. 1- 29 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 54 H Measurement Category II. For measurements performed on circuits directly connected to the low-voltage installation. H Measurement Category I. For measurements performed on circuits not directly connected to MAINS. Overvoltage Category Overvoltage Category II (as defined in IEC 61010-1) 1- 30 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 55: Operating Information

    Operating Information...

  • Page 57: Installation

    The peripheral connections are the same as those you would make on a personal computer. The connection points are shown in Figure 2- -1 on page 2- -3. See Table 2- -1 for additional connection information. 2- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 58: Table 2- 1: Additional Accessory Connection Information

    WARNING. Before installing accessories to connectors (mouse, keyboard, etc.), power off the instrument. See Powering Off the Instrument on page 2- -5. 2- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 59: Figure 2- 1: Locations Of Peripheral Connectors On Rear Panel

    GPIB ..Network ....Figure 2- 1: Locations of peripheral connectors on rear panel 2- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 60: Power On The Instrument

    5. If the instrument does not power on, press the On/Standby switch to power on the instrument (see Figure 2- -3 for the switch location). 6. Wait for the boot routine and low-level self test to complete. 2- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 61: Powering Off The Instrument

    The compact disc serves as a backup in the event that you have to rebuild the hard drive. You must restore the Windows operating system before you can install the oscilloscope firmware and other product software. 2- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 62 The LockUpgrades.exe file is in the following directory: C:\Program Files\Tektronix\TekScope NOTE. Using the OS Restore CD to reinstall the operating system resets the LockUpgrades utility to the default setting and allows firmware upgrades. 2- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 63: Operating Information

    When the instrument is in the Tool bar mode, most of the control windows can be accessed by touching buttons at the top of the display. 2- 7 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 64 Readouts: Display Controls Status: Quick reference to cursor readouts and vertical, horizontal, and trigger measurement selections, scale, and parameters readouts in this area, selectable from the menu bar or tool bar 2- 8 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 65: Front Panel Controls Map

    Press ZOOM to add a magnified graticule to the display. Press HORIZ or VERT to select the axis to magnify. Turn channel displays on and off. Adjust the vertical scale and position. 2- 9 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 66: Front Panel I/O Map

    O/E converter electrical output TDS7000B Series Floppy disk drive Probe compensation Ground terminal output Auxiliary trigger input Channel Auxiliary trigger output inputs CH 3 SIGNAL OUTPUT; scale and offset controlled by CH3 controls 2- 10 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 67: Instrument Diagnostics

    PC and provides information for controlling the instrument via the GPIB. This section mainly discusses the online help for the instrument. 2- 11 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 68 (with the label Restore Help). Touch the Restore Help button to restore the help window to its normal size. 2- 12 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 69: Theory Of Operation

    Theory of Operation...

  • Page 71: Logic Conventions

    O/E Converter Board. The optical-to-electrical converter (CSA7000B Series only) board converts optical signals at its input to electrical signals. The electrical signals are connected to the CH1 input using an adapter. 3- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 72: Display Panel

    The CPU board provides a GPIB interface through a rear panel connector. ATX Board. The ATX board provides standard Windows functionality and I/O port interfaces to the rear panel. 3- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 73: Rear Panel

    Power is distributed throughout the instrument through the front and rear power distribution bus boards. Fans The fan assembly provides forced air cooling for the instrument. The fans are controlled by the CPU and microprocessor. 3- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 74 Theory of Operation 3- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 75: Performance Verification 4

    Performance Verification...

  • Page 77: Performance Verification

    (See Table 4- -2: Test equipment on page 4- -18). If you are not familiar with operating this instrument, read the instrument reference or user manuals or explore the online help. 4- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 78: Conventions

    “menu bar” refers to a row of menus at the top of the display. You can switch between toolbar and menu bar operating modes by pushing the button near the top right corner of the display. See Figure 4- -1. 4- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 79: Figure 4- -1: Toolbar And Menu Bar

    H The procedures assume you have connected a mouse to the instrument so you can click on the screen controls. If you have not connected a mouse, you can use the touch screen to operate all the screen controls. 4- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 80 Performance Verification 4- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 81: Brief Procedures

    Wait: The internal diagnostics do an exhaustive verification of proper instrument function. This verification may take several minutes. When the verification is finished, the resulting status will appear in the diagnostics control window. 4- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 82: Functional Tests

    “has a period of about six horizontal divisions,” etc., do NOT interpret the quantities given as limits. Operation within limits is checked in Performance Tests, which begin on page 4- -17. 4- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 83: Verify All Input Channels

    One P7240 probe (P7260 probe for TDS7704B) required One 067-0405-xx (067-0484-xx for TDS7704B) probe calibration and deskew fixture One BNC cable, such as Tektronix part number 012-0076-xx or the cable that came with the deskew fixture (012-0208-xx) Prerequisites None 1. Initialize the instrument:Push the front-panel DEFAULT SETUP button.

  • Page 84: Figure 4- 2: Universal Test Hookup For Functional Tests - Ch 1 Shown

    Figure 4- 2: Universal test hookup for functional tests - CH 1 shown 3. Turn off all channels:If any of the front-panel channel buttons are lighted, push those buttons to turn off the displayed channels. See Figure 4- -3. 4- 8 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 85: Figure 4- 3: Channel Button Location

    Waveform amplitude 5.2 divisions - - 2.5 divisions H The front-panel vertical POSITION knob (for the channel you are testing) moves the signal up and down the screen when rotated. 4- 9 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 86: Verify The Time Base

    9. Remove the test hookup: Disconnect the equipment from the channel input and the probe compensation output. Verify the Time Base Equipment One BNC cable, such as Tektronix part number 012-0076-00 required One TCA-BNC adapter Prerequisites None 1. Initialize the instrument:Push the front-panel DEFAULT SETUP button.

  • Page 87: Figure 4- 4: Setup For Time Base Test

    H Change the horizontal SCALE to 20 s/div. The rising edge of the waveform should remain near the center graticule and the falling edge should be off screen. b. Turn on and set horizontal delay: 4- 11 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 88: Verify The A (Main) And B (Delayed) Trigger Systems

    9. Remove the test hookup: Disconnect the BNC cable from the channel input and the probe compensation output. Verify the A (Main) and B Equipment One BNC cable, such as Tektronix part number 012-0076-00 (Delayed) Trigger Systems required One TCA-BNC adapter...

  • Page 89: Figure 4- 5: Setup For Trigger Test

    H Set the front-panel trigger mode to NORM. b. Confirm that the following statements are true: H The trigger-level readout for the B trigger system changes as you turn the lower multipurpose knob. 4- 13 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 90: Verify The File System

    8. Remove the test hookup: Disconnect the BNC cable from the channel input and the probe compensation output. Verify the File System Equipment One BNC cable, such as Tektronix part number 012-0076-00 required One TCA-BNC adapter One 1.44 Mbyte, 3.5 inch DOS-compatible formatted disk.
  • Page 91 11. Remove the test hookup: a. Disconnect the BNC cable and adapter from the channel input and the probe compensation output. b. Remove the floppy disk from the floppy disk drive. 4- 15 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 92 Brief Procedures 4- 16 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 93: Performance Tests

    20 minutes, and must be operating at an ambient tempera- ture as listed in Table 1- -12. (The warm-up requirement is usually met in the course of meeting the Self Tests and Functional Tests prerequisites listed above). 4- 17 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 94: Equipment Required

    Fluke 9500B To check accuracy of signal amplitude; accuracy to 0.25% 11. Timer-counter 25 MHz, 1 s gate Advantest R5360 Checking long- - term sample rate and delay time accuracy 4- 18 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 95 Used to test delta time mea- 103-0031-00 surement accuracy 25. Termination (two re- Short circuit, SMA connector, female Tektronix part number Used to test delta time mea- quired) 015-1021-00 surement accuracy 4- 19 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 96 For Delta Time Measurement Accuracy, use a Fluke 9500B or a pulse generator with a rise time as shown in Table 4- 9 on page 4- 98. On Instruments with a bandwidth ≤3 GHz, items 12, 13, and 14 may be replaced with a Fluke 9500B and an appropriate output head. 4- 20 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 97: Csa7000B & Tds7000B Test Record

    Technician: Instrument performance test Minimum Incoming Outgoing Maximum DC voltage measurement accuracy (averaged), CSA7404B, TDS7404B, TDS7254B, & TDS7154B 2 mV Vert scale setting, + 512.79 mV __________ __________ + 519.21 mV - - 5 Div position setting, +0.5 V offset 2 mV Vert scale setting, - - 519.21 mV...
  • Page 98 - - 5 Div position setting, +2.5 V offset 1.0 V Vert scale setting, - - 4.8263 V __________ __________ - - 4.1738 V +5 Div position setting, - - 2.5 V offset 4- 22 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 99 - - 5 Div position setting, +0.5 V offset 2 mV Vert scale setting, - - 520.01 mV __________ __________ - - 511.99 mV +5 Div position setting, - - 0.5 V offset 4- 23 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 100 - - 5 Div position setting, +2.5 V offset 1.0 V Vert scale setting, - - 4.8525 V __________ __________ - - 4.1475 V +5 Div position setting, - - 2.5 V offset 4- 24 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 101 Instrument performance test Minimum Incoming Outgoing Maximum DC gain accuracy (averaged), CSA7404B, TDS7404B, TDS7254B, & TDS7154B 2 mV Vert scale setting, 0 Div position setting, 0 V offset 0 Div position setting, 0 V offset + 14.80 mV + 14.80 mV...
  • Page 102 + 5.856 V __________ __________ + 6.144 V + 6.144 V 0 Div position setting, - - 2.0 V offset - - 5.856 V __________ __________ - - 6.144 V 4- 26 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 103 + 5.856 V __________ __________ + 6.144 V + 6.144 V 0 Div position setting, - - 2.0 V offset - - 5.856 V __________ __________ - - 6.144 V 4- 27 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 104 + 5.856 V __________ __________ + 6.144 V + 6.144 V 0 Div position setting, - - 2.0 V offset - - 5.856 V __________ __________ - - 6.144 V 4- 28 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 105 + 5.826 V + 5.826 V __________ __________ + 6.174 V + 6.174 V 0 Div position setting, - - 2.0 V offset + 5.826 V __________ __________ + 6.174 V 4- 29 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 106 + 5.826 V + 5.826 V __________ __________ + 6.174 V + 6.174 V 0 Div position setting, - - 2.0 V offset + 5.826 V __________ __________ + 6.174 V 4- 30 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 107 + 5.826 V + 5.826 V __________ __________ + 6.174 V + 6.174 V 0 Div position setting, - - 2.0 V offset + 5.826 V __________ __________ + 6.174 V 4- 31 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 108 + 5.826 V + 5.826 V __________ __________ + 6.174 V + 6.174 V 0 Div position setting, - - 2.0 V offset + 5.826 V __________ __________ + 6.174 V 4- 32 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 109 - - 115 mV __________ __________ + 115 mV + 115 mV 0 Div position setting, - - 2.5 V offset - - 2.62375 V __________ __________ - - 2.37625 V 4- 33 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 110 - - 115 mV __________ __________ + 115 mV + 115 mV 0 Div position setting, - - 2.5 V offset - - 2.62375 V __________ __________ - - 2.37625 V 4- 34 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 111 - - 115 mV - - 115 mV __________ __________ + 115 mV + 115 mV - - 2.5 V offset - - 2.6275 V __________ __________ - - 2.3725 V 4- 35 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 112 - - 115 mV - - 115 mV __________ __________ + 115 mV + 115 mV - - 2.5 V offset - - 2.6275 V __________ __________ - - 2.3725 V 4- 36 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 113 RH %: Date of Calibration: Technician: Instrument performance test Minimum Incoming Outgoing Maximum Maximum input voltage, CSA7404B, TDS7404B, TDS7254B, & TDS7154B 50 mV Vert scale setting, 50 mV Vert scale setting, +1 V input +1 V input Pass Pass __________...
  • Page 114 50 mV 212 mV __________ __________ 20 mV 84.8 mV __________ __________ 10 mV 42.4 mV __________ __________ 5 mV 21.2 mV __________ __________ 2 mV 8.48 mV __________ __________ 4- 38 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 115 __________ __________ 0.67 divisions 10 mV CH 1 __________ __________ 0.67 divisions CH 2 __________ __________ 0.67 divisions CH 3 __________ __________ 0.67 divisions CH 4 __________ __________ 0.67 divisions 4- 39 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 116 4.75 ns __________ __________ 5.25 ns Probe compensation output signal Frequency 950 Hz __________ __________ 1.050 kHz Voltage (difference) 400 mV __________ __________ 600 mV Serial trigger (Option ST only) 4- 40 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 117 Position 34 Pass __________ __________ Position 35 Pass __________ __________ Position 36 Pass __________ __________ Position 37 Pass __________ __________ Position 38 Pass __________ __________ Position 39 Pass __________ __________ 4- 41 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 118 Pass __________ __________ Position 61 Pass __________ __________ Position 62 Pass __________ __________ Position 63 Pass __________ __________ Position 64 Pass __________ __________ Clock recovery frequency range Pass __________ __________ 4- 42 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 119 __________ __________ 1310 nm 64 mV __________ __________ 1550 nm 64 mV __________ __________ System bandwidth (O/E, O/E-to-CH1 input adaptor, Communications Signal Analyzer) CSA7404B 2.4 GHz 2.4 GHz __________ __________ 4- 43 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 120 Performance Tests 4- 44 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 121: Signal Acquisition System Checks

    50 precision coaxial cable to the other side of the BNC T connector. Now connect the BNC T connector to CH 1 through an adapter. See Figure 4- -7. 4- 45 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 122: Figure 4- 7: Initial Test Hookup

    H From the tool bar, touch MEAS and select the Ampl tab, then touch Mean to measure the mean of the current channel. H Touch Setup Statistics and touch Measurement Statistics Mean to display the measurement statistics of the mean measurement. 4- 46 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 123: Table 4- 3: Dc Voltage Measurement Accuracy

    H Use the keypad to set vertical position to - -5 divisions (press CLR, 5, - -, and then ENTER, on the keypad). The baseline level will move off screen. H Touch Offset. 4- 47 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 124: Figure 4- 8: Measurement Of Dc Accuracy At Maximum Offset And Position

    H Repeat substeps c through f until all vertical scale settings, listed in Table 4- -3, are checked for the channel under test. g. Test all channels: Repeat substeps a through f for all four channels. 4- 48 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 125: Check Dc Gain Accuracy

    50 precision coaxial cable to the other side of the BNC T connector. Now connect the BNC T connector to CH 1 through an adapter. See Figure 4- -9. 4- 49 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 126: Figure 4- 9: Initial Test Hookup

    H From the tool bar, touch MEAS and select the Ampl tab, then touch Mean to measure the mean of the current channel. H Touch Setup Statistics and touch Measurement Statistics Mean to display the measurement statistics of the mean measurement. 4- 50 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 127: Table 4- 4: Gain Accuracy

    +147.1 mV to +156.9 mV - - 676.0 mV 50 mV +190 mV +372.4 mV to +387.6 mV - - 190 mV - - 5 +0.5 V +940 mV +366.7 mV to +393.3 mV 4- 51 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 128 - - 3.80 V +2.0 V +5.00 V +5.856 V to +6.144 V - - 1.00 V - - 2.0 V +1.00 V +5.856 V to +6.144 V - - 5.00 V 4- 52 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 129 +366.7 mV to +393.3 mV +560 mV - - 0.5 V - - 560 mV +366.7 mV to +393.3 mV - - 940 mV 100 mV 0 +380 mV +744.8 mV to +775.2 mV 4- 53 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 130 - - 3.80 V +2.0 V +5.00 V +5.856 V to +6.144 V - - 1.00 V - - 2.0 V +1.00 V +5.856 V to +6.144 V - - 5.00 V 4- 54 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 131 +366.7 mV to +393.3 mV +560 mV - - 0.5 V - - 560 mV +366.7 mV to +393.3 mV - - 940 mV 100 mV 0 +380 mV +744.8 mV to +775.2 mV 4- 55 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 132 - - 3.80 V +2.0 V +5.00 V +5.856 V to +6.144 V - - 1.00 V - - 2.0 V +1.00 V +5.856 V to +6.144 V - - 5.00 V 4- 56 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 133 +366.7 mV to +393.3 mV +560 mV - - 0.5 V - - 560 mV +366.7 mV to +393.3 mV - - 940 mV 100 mV 0 +380 mV +744.8 mV to +775.2 mV 4- 57 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 134 - - 3.80 V +2.0 V +5.00 V +5.856 V to +6.144 V - - 1.00 V - - 2.0 V +1.00 V +5.856 V to +6.144 V - - 5.00 V 4- 58 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 135 - - 5 +0.5 V +940 mV +364.8 mV to +395.2 mV +560 mV - - 0.5 V - - 560 mV +364.8 mV to +395.2 mV - - 940 mV 4- 59 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 136 - - 3.80 V +2.0 V +5.00 V +5.826 V to +6.174 V - - 1.00 V - - 2.0 V +1.00 V +5.826 V to +6.174 V - - 5.00 V 4- 60 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 137 +364.8 mV to +395.2 mV +560 mV - - 0.5 V - - 560 mV +364.8 mV to +395.2 mV - - 940 mV 100 mV 0 +380 mV +741.0 mV to +779.0 mV 4- 61 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 138 - - 3.80 V +2.0 V +5.00 V +5.826 V to +6.174 V - - 1.00 V - - 2.0 V +1.00 V +5.826 V to +6.174 V - - 5.00 V 4- 62 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 139 +364.8 mV to +395.2 mV +560 mV - - 0.5 V - - 560 mV +364.8 mV to +395.2 mV - - 940 mV 100 mV 0 +380 mV +741.0 mV to +779.0 mV 4- 63 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 140 - - 3.80 V +2.0 V +5.00 V +5.826 V to +6.174 V - - 1.00 V - - 2.0 V +1.00 V +5.826 V to +6.174 V - - 5.00 V 4- 64 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 141 +364.8 mV to +395.2 mV +560 mV - - 0.5 V - - 560 mV +364.8 mV to +395.2 mV - - 940 mV 100 mV 0 +380 mV +741.0 mV to +779.0 mV 4- 65 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 142 H From the tool bar touch VERT and then touch Position. H Use the keypad to set vertical position to the number of divisions listed in the table for the current vertical scale setting and offset. H Touch Offset. 4- 66 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 143: Figure 4- 10: Measurement Of Dc Gain Accuracy

    Check against limits: H Subtract the second measurement mean from the first measurement mean for the current vertical scale, position, and offset. 4- 67 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 144: Check Offset Accuracy

    Also, check that the calibrator does not have shorting straps installed between the DC output, sense input, or grounds. 4- 68 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 145: Figure 4- 11: Initial Test Hookup

    H From the tool bar, touch MEAS and then Clear to remove the previous measurement. H Press the Vertical button of the channel just confirmed to remove the channel from the display. 4- 69 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 146: Table 4- 5: Offset Accuracy

    +496.55 mV to +503.45 mV 0.0 mV - - 1.7 mV to +1.7 mV - - 0.5 V - - 500 mV - - 503.45 mV to - - 496.55 mV 4- 70 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 147 Measure the test signal: Press Close. Read the measurement results at the Mean measurement readout. See Figure 4- -12. 4- 71 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 148: Figure 4- 12: Measurement Of Offset Accuracy

    3. Disconnect the hookup: a. Set the generator output to 0 V. b. Disconnect the cable and adapter from the generator output and the input connector of the channel last tested. 4- 72 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 149 BNC T connector. Now connect the BNC T connector to CH 1 through a 10X attenuator and an adapter. See Figure 4- -13. 4- 73 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 150: Figure 4- 13: Initial Test Hookup

    Turn on the measurement High for the channel: H From the tool bar, touch MEAS and select the Ampl tab, then touch High to measure the high of the current channel. 4- 74 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 151: Table 4- 6: Maximum Input Voltage Limit

    See Figure 4- -14. 4- 75 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 152: Figure 4- 14: Check Of Maximum Input Voltage

    Check the remaining vertical scale settings: Repeat substeps c through f until all vertical scale settings, listed in Table 4- -6, are checked for the channel under test. 4- 76 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 153: Check Analog Bandwidth

    TDS7704B: Touch the Interpolated Real Time IT button. All other CSA/TDS7000B: Touch the Equivalent Time ET button. H From the tool bar, touch MEAS. Touch Setup Ref Levs; then touch the Method Min-Max button. 4- 77 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 154: Figure 4- 15: Initial Test Hookup

    H Press the front-panel Vertical button that corresponds to the channel you are to confirm. H Move the leveled output of the sine wave generator to the channel you selected. 4- 78 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 155: Table 4- 7: Analog Bandwidth

    H Touch Close button. H Set the generator output so the CHx Pk-Pk mean readout equals the reference amplitude in Table 4- -7 that corresponds to the vertical scale set in substep c. 4- 79 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 156: Figure 4- 16: Measurement Of Analog Bandwidth

    H CHECK that the Pk-Pk mean readout on screen is within the limits listed in Table 4- -7 for the current vertical scale setting. H Enter the voltage on the test record. 4- 80 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 157 Test all channels: Repeat substeps a through g for all four channels. 3. Disconnect the hookup: Disconnect the test hook up from the input connector of the channel last tested. 4- 81 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 158: Check Delay Between Channels

    H Connect the sine wave output of a sine wave generator to a 50 precision coaxial cable followed by a power divider. H Connect the power divider to both CH 1 and CH 2. See Figure 4- -17. 4- 82 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 159: Figure 4- 17: Initial Test Hookup

    H Display the live waveform. Move the power divider from CH 3 to CH 4, so that CH 1 and CH 4 are driven. Press the Vertical CH 4 button to display. See Figure 4- -18 on page 4- -84. 4- 83 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 160: Figure 4- 18: Measurement Of Channel Delay

    Table 4- -8. Note that these numbers may be either positive or negative. h. Move the power divider on CH 1 to CH 2. Move the power divider on CH 4 to CH 1. 4- 84 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 161: Table 4- 8: Delay Between Channels Worksheet

    CH 1 to CH 3 skew CH 1 to CH 4 skew 3. Disconnect the hookup: Disconnect the cable from the generator output at the input connectors of the channels. 4- 85 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 162: Check Channel Isolation (Crosstalk)

    H From the tool bar, touch Horiz and select the Acquisition tab. Set the acquisition mode as follows: TDS7704B: Touch Sample. All other CSA/TDS7000B: Touch Average, set the number of averages to 16. 4- 86 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 163 (discount trace width). Enter the largest amplitude on the test record. d. Move the signal to the CH 3 input connector, change the Trigger SOURCE to CH 3, and move the 50 termination to the CH 2 input. 4- 87 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 164 H Repeat substeps a through g. 4. Display the test signal: If your instrument bandwidth is ≤1.5 GHz, skip to step 6. H Connect the 2X attenuator to CH 1. 4- 88 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 165 Check — Amplitude of each trace other than CH 4 is 0.67 division or less (discount trace width). Enter the largest amplitude on the test record. h. Select an unchecked Vertical SCALE: H Connect the 2X attenuator to CH 1. 4- 89 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 166: Check Input Impedance

    One Digital Multimeter (Item 27) required One Dual-Banana Connector, (Item 5) One precision 50 Ω coaxial cable (Item 4) One SMA male-to-female BNC adapter (Item 19) Prerequisites See page 4- - 17 4- 90 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 167: Figure 4- 20: Initial Test Hookup

    Move the test setup to an unchecked input channel. b. Set the Vertical SCALE of the channel to 10 mV per division. c. Repeat steps 2 through 3. 5. Disconnect the hookup: Disconnect the equipment from the instrument. 4- 91 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 168: Time Base System Checks

    2. Confirm the time base is within limits for accuracies: a. Check long-term sample rate and delay time accuracies against limits: H CHECK that the count on the timer-counter is within limits. 4- 92 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 169: Figure 4- 22: Initial Test Hookup

    CH 1 input through an adapter (see Figure 4- -22). H From the button bar, touch MEAS and select the Ampl tab. 4- 93 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 170: Figure 4- 23: Final Test Hookup

    H Touch Utilities and select Instrument Calibration. H Touch Calibrate and wait for the signal path compensation to finish. b. Check the completion status: If the Status is Fail, refer the instrument to qualified service personnel. 4- 94 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 171: Check Delta Time Measurement Accuracy

    Accuracy as listed in Specifications. The previous procedure, Check Long-Term Sample Rate and Delay Time Accuracy and Reference, see page 4- -92, verified the “PPM” portion of the delta time specification. 4- 95 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 172: Figure 4- 24: Delta Time Accuracy Test Hookup

    H Set the pulse generator output for about 500 mV. (This amplitude can be adjusted later to get a 6-division pulse on screen.) c. Modify the initialized front-panel control settings: H Power on the pulse generator. 4- 96 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 173 75 mV and press Enter. Touch Close. H Press the RUN/STOP button to start the acquisitions. H Wait about 30 seconds. H Press RUN/STOP button to freeze the display. H Record the all statistics values. 4- 97 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 174: Table 4- 9: Delta Time Measurement

    H Move the test hookup to the channel you selected. H Press RUN/STOP button to start the display. H Repeat step d. 2. Disconnect all test equipment from the instrument. 4- 98 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 175: Trigger System Checks

    Sine wave generator Output 2X Attenuator 50 Ω Coaxial cable Figure 4- 25: Initial test hookup d. Set the trigger mode: Press the Trigger MODE button to toggle it to NORMAL. 4- 99 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 176: Figure 4- 26: Measurement Of Time Accuracy For Pulse And Glitch Triggering

    Check against limits: Do the following subparts in the order listed. H While doing the following subparts, monitor the display (it will stop acquiring) and the front-panel light TRIG’D (it will extinguish) to determine when triggering is lost. 4- 100 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 177: Check Sensitivity, Edge Trigger, Dc Coupled

    H From the tool bar, touch Horiz and select the Acquisition tab. H Touch Average and set the number of averages to 16. H Touch the Equivalent Time ET button. 4- 101 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 178: Figure 4- 27: Initial Test Hookup

    500 mV. Readout may fluctuate around 500 mV. H Disconnect the 50 precision coaxial cable at CH 1 and reconnect it to CH 1 through a 10X attenuator. 4- 102 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 179: Figure 4- -28: Measurement Of Trigger Sensitivity - - 50 Mhz

    Check Delayed trigger system for stable triggering at limits: Do the following subparts in the order listed. H From the button bar touch Trig, select the A Event tab, and set the Source to Line. 4- 103 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 180 H Press the Trigger SOURCE button to toggle it to EXT. H Press PUSH TO SET 50%. H CHECK that a stable trigger is obtained for the test waveform on both the positive and negative slopes. Press the Trigger SLOPE 4- 104 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 181 Repeat step 2, substep b for the full bandwidth selected. d. Display the test signal (delay trigger at 1.5 GHz): H Set the generator frequency as follows: CSA7404B 1.5 GHz 4- 105 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 182: Output Signal Checks

    5. Disconnect the hookup: Disconnect the cables and adapter from AUX IN and the channel last tested. Output Signal Checks The procedure that follows checks those characteristics of the output signals that are listed as checked under Warranted Characteristics in Specifications. 4- 106 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 183: Check Outputs — Ch 3 Signal Out And Aux Trigger Out 4

    H Connect the standard amplitude output of a calibration generator through a 50 precision coaxial cable to CH 3 through an adapter. H Set the calibration generator to output a 0.500 V square wave. 4- 107 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 184 Check AUX OUT output against limits: CHECK that the CH 2 High readout is ≥1.0 volt and that the CH 2 Low readout ≤0.25 volts. See Figure 4- -30. 4- 108 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 185 H From the button bar, touch MEAS and select the Ampl tab. H Touch the Low button. H Touch Close. a. Check against limits: CHECK that the Low reading is between - -100 mV and - -170 mV, inclusive. 4- 109 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 186: Check Probe Compensation Output

    Figure 4- 31: Initial test hookup b. Initialize the instrument: Press the DEFAULT SETUP button. c. Modify the initialized front-panel control settings: H Set the Vertical SCALE to 100 mV. 4- 110 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 187 H CHECK that the CH 1 Freq readout is within 950 Hz to 1.050 kHz, inclusive. See Figure 4- -32. H Enter the frequency on the test record. H Touch Clear to remove the measurement. Figure 4- 32: Measurement of probe compensator frequency 4- 111 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 188 H From the tool bar, touch Horiz and select the Acquisition tab. H Touch Average and set the number of averages to 16 using the keypad or the multipurpose knob. 4- 112 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 189 H CHECK that the difference obtained is within 400 mV to 600 mV, inclusive. H Enter voltage difference on test record. 3. Disconnect the hookup: Disconnect the cable and adapter from CH 1. 4- 113 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 190: Serial Trigger Checks (Tds7000B Series Option St And Csa7000B Series Only)

    H Set the vertical SCALE to 50 mV per division. H Set the horizontal SCALE to 2.5 ns per division. H Adjust the sine-wave generator output for 4 divisions of amplitude centered on the display. 4- 114 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 191: Table 4- 10: Serial Pattern Data

    Figure 4- -36). Enter pass or fail in the test record. Touch the Clear button. m. Enter data into Serial Pattern Data field for the next setting in Table 4- -10 that is not yet checked. n. Touch Apply. 4- 115 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 192 Performance Tests Triggered 1 UI before a 0 Triggered on a 0 Triggered 1 UI after a 0 Figure 4- 36: Isolated 0 triggering 4- 116 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 193: Table 4- 11: Word Recognizer Data

    Figure 4- -37). Enter pass or fail in the test record. Touch the Clear button. k. Enter data into the Serial Pattern Data field for the next setting in Table 4- -11 that is not yet checked. 4- 117 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 194 Performance Tests Triggered 1 UI before a 1 Triggered on a 1 Triggered 1 UI after a 1 Figure 4- 37: Isolated 1 triggering 4- 118 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 195 Repeat steps g and i until all 64 bits of the Serial Pattern Data have contained a 1. 5. Disconnect the hookup: Disconnect the cables and adapters from the inputs and outputs. 4- 119 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 196 1. Step 2, 5, 8, 11, . . . Triggering 2 clock cycles after a 1. Step 3, 6, 9, 12, . . . Figure 4- 38: N modulo 3 triggering 4- 120 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 197: Check Serial Trigger Clock Recovery Range

    H From the button bar, touch the Disp (display) button. H Set the Display Style to Dots. H Set the Display Persistence to Variable, and set the Persist Time to 3.0 s. H Touch the Close button. 4- 121 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 198 Table 4- -12 (on page 4- -123). g. If all tests pass, enter passed in the test record. 3. Disconnect the hookup: Disconnect the cables and adapters from the inputs and outputs. 4- 122 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 199: Table 4- 12: Clock Recovery Input Frequencies And Baud Rates

    195.06 Mbaud 24.383 MHz 97.531 Mbaud 12.191 MHz 48.766 Mbaud 6.0957 MHz 24.383 Mbaud 3.0479 MHz 12.191 Mbaud 1.5239 MHz 6.0957 Mbaud 761.96 kHz 3.0479 Mbaud 380.98 kHz 1.5239 Mbaud 4- 123 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 200 Performance Tests Recovered clock locked (1.5625 GHz) Recovered clock locked (All frequencies except 1.5625 GHz) A possible display with the recovered clock not locked Figure 4- 40: Clock recovery 4- 124 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 201: Optical-To-Electrical Converter Checks (Csa7000B Series Only)

    2. Follow this procedure to make the Dark Level checks: a. In the Utilities menu, select Instrument Calibration. Check that the Status is Pass. b. Press the Calibrate button. c. Wait until the compensation is completed. 4- 125 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 202: Table 4- 13: Dark Level

    CHECK that the CH 1 Mean readout is within the limits listed for the current scale setting in the table. Record the mean on the test record. 7. Repeat step 6 until all scale settings have been checked. 4- 126 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 203: Check Maximum Optical-To-Electrical Noise 4

    Set Position to 0.0div. h. Set Channel Offset to 0.0W. From the tool bar, touch the Horiz button and select the Horizontal tab. Set the Scale to 20 ns/div. 4- 127 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 204: Table 4- 14: Optical Noise Limits

    Maximum optical noise, std CSA7404B 1550 and 1310 nm 4.35 W 850 nm 5.35 W 780 nm 5.85 W 3. Disconnect the hookup: Disconnect the adapters from the inputs and outputs. 4- 128 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 205: Check Optical-To-Electrical Gain 4

    H Connect the output of the optical attenuator to the input of the optical power meter. H Set the CW laser source to 780 nm. H Set the multimode optical attenuator for 0.1 mW (- -10 dBm) into the optical power meter. 4- 129 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 206: Table 4- 15: O/E Gain

    H Set the Vertical SCALE to the setting in Table 4- -15 for the selected wavelength. H Set the multimode optical attenuator for 0.1 mW out of the optical power meter. 4- 130 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 207: Check Optical-To-Electrical System Bandwidth 4

    Power log 1 –3 dB In terms of voltage, and resistance, the bandwidth is expressed as: ⎧ ⎫ V f 2 ⎪ ⎪ 3 dB ⎩ ⎭ V DC 2 4- 131 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 208 @ frequency 3 dB vertical swing @ DC This definition is used for reference receiver settings. This procedure checks the minimum optical bandwidth of the instrument. 4- 132 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 209 4. From the tool bar, touch Horiz and select the Acquisition tab. 5. Select the Average acquisition mode. Set the number of averages to 64. Touch the Equivalent Time ET button. 4- 133 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 210 9. Decrease the amount of attenuation provided by the optical attenuator until a pulse appears. 10. Adjust the attenuation of the variable optical attenuator until it produces an impulse pulse amplitude of 80 W See Figure 4- -45. p-p. 4- 134 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 211: Table 4- 16: O/E System Bandwidth

    Set the Ref Level to - -5.2 dBm and press Apply. From the tool bar, touch Math and select the Math 1 tab. Set the Math Scale to 3 dBm per division. 4- 135 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 212 NOTE. In Figure 4- -46, the left cursor is at the DC frequency. The right cursor is at the - -3 dB frequency. The f2 readout should be at or above the limit shown in Table 4- -16. 4- 136 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 213: Sine Wave Generator Leveling Procedure

    H Set the sine wave generator to a reference frequency of 10 MHz. H Adjust the sine wave generator amplitude to the required number of divisions as measured by the instrument. 4- 137 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 214 3. The signal amplitude is now correctly set for the new frequency. H Disconnect the sine wave generator from the power sensor. H Connect the sine wave generator to the instrument. 4- 138 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 215: Adjustment Procedures

    Adjustment Procedures...

  • Page 217: Adjustment Interval

    Modules listed as customer replaceable have adjustment listed if required. Modules not listed as customer replaceable must be installed and adjusted by Tektronix. See Table 6- -7 on page 6- -76.
  • Page 218 Adjustment Procedures 5- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 219: Maintenance

    Maintenance...

  • Page 221: Preventing Esd

    3. Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules. Do service of static-sensitive modules only at a static-free work station. 6- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 222: Inspection And Cleaning

    To reduce the need for cleaning, immediately replace protective caps on the optical connectors when not in use. Use the following items to clean optical connectors: H Clean, dust-free compressed air H Fiber-optic cleaning swabs 6- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 223: Interior Cleaning

    Cleaning kits for optical connectors (such as the Tektronix Optical Connector Cleaner kit number 020-2357-00) are available from a number of suppliers. To clean optical connectors, follow these steps: 1.

  • Page 224: Exterior Cleaning

    Flat Panel Display The display is a soft plastic display and must be treated with care during Cleaning cleaning. 6- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 225: Table 6- 2: Internal Inspection Check List

    Burned, broken, or cracked circuit-run plating. Resistors Burned, cracked, broken, Remove and replace damaged blistered condition. circuit board. Solder connections Cold solder or rosin joints. Resolder joint and clean with isopropyl alcohol. 6- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 226 5. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate. 6. Use hot (120 _F to 140 _F) deionized water to thoroughly rinse them. 7. Dry all parts with low-pressure, deionized air. 6- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 227 8. Dry all components and assemblies in an oven or drying compartment using low-temperature (125 _F to 150 _F) circulating air. Lubrication. There is no periodic lubrication required for this instrument. 6- 7 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 228 Maintenance 6- 8 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 229: Removal And Installation Procedures

    NOTE. Read Equipment Required for a list of the tools needed to remove and install modules in this instrument. See Table 6- -3, page 6- -10. Read the cleaning procedure before disassembling the instrument for cleaning. 6- 9 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 230: Table 6- 3: Tools Required For Module Removal

    Standard tool inch open-end wrench posts Used to remove the rear panel nut Standard tool inch open-end wrench posts MA-800G Soldering Aid Used to remove the front panel trim Standard tool 6- 10 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 231: Procedures For External Modules

    Reverse procedure to reinstall. 7. Reinstallation: Do in reverse steps 6 and 5 to reinstall the line cord and then the line fuse. 6- 11 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 232 4. Reinstallation: To reinstall, align knob to shaft and push it in until it snaps. CAUTION. To prevent damage to the encoders located on the circuit board, apply pressure to the encoders while pushing the knob on the shaft. 6- 12 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 233 Removal and Installation Procedures Figure 6- 2: Knob removal 6- 13 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 234 The T-15 Torx screws also secure the snap studs to the top cover. c. Remove the top cover trim from the instrument. 6. Reinstallation: Do in reverse steps 2 through 5 to reinstall the appropriate trim. 6- 14 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 235 To remove the trim ring, slide the flat end of a soldering aid into the side slot on the trim ring. Press in, then lift up to hook it underneath, then pry Figure 6- 3: Trim removal 6- 15 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 236 Remove the bottom cover from the instrument. 3. Reinstallation: Do in reverse steps a and b to reinstall the bottom cover. Bottom cover T-15 Torx screw (4) Figure 6- 4: Bottom cover removal 6- 16 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 237 When reinstalling the bottom cover, ensure that the cover key enters the key socket as the cover is put in place. When reinstalling the bottom cover, ensure that all sides of the covers are snug against the instrument before installing the screws. 6- 17 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 238 Removal and Installation Procedures All left and right cover mounting holes are indicated as shown. Left side cover T-15 Torx screw (11) Right side cover Figure 6- 5: Cover removal 6- 18 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 239 Removal and Installation Procedures Left side cover Right side cover T-15 Torx screw (12) Figure 6- 6: Cover removal 6- 19 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 240 Top cover trim Left side cover Rear foot Right side cover Front panel trim Right side trim Carrying handle Chassis Front panel cover Bottom cover Acquisition trim Figure 6- 7: External modules 6- 20 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 241 Power flex Acquisition circuit board PA bus Front panel board Rear board distribution Front board distribution Front panel board keypad Display module assembly Front panel assembly Figure 6- 8: Internal modules 6- 21 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 242 Removal and Installation Procedures 6- 22 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 243: Procedures For Modules

    3. Orient the instrument: Set the instrument so its bottom is down on the work surface and its front panel is facing you. a. Remove the six T-15 Torxdrive screws that secure the Front-Panel assembly to the front chassis. 6- 23 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 244 4. Reinstallation: Do in reverse steps a through d to reinstall the front-panel assembly. J1 ribbon cable Front panel assembly T-15 Torxdrive screw (6) Figure 6- 9: Front-panel assembly removal 6- 24 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 245 Remove the eight T-15 Torxdrive screws that secure the Front panel board to the Front panel assembly. b. Remove the board from the assembly. 3. Reinstallation: Do in reverse steps a through b to reinstall the front panel board. 6- 25 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 246 Remove the keypad from the front panel board. T-15 Torxdrive screw (8) Front panel board Keypad support guide (12) Keypad Figure 6- 11: Front panel board and keyboard removal 6- 26 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 247 Disconnect the J2 and J3 flex cables from the display assembly. Remove the display module assembly from the instrument. See Figure 6- -12, page 6- -28. 6- 27 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 248 Separate the assembly by carefully prying the Touch panel (outer) assembly from the Display (inner) assembly. Use fingers in the finger reliefs to pull out on the Touch panel assembly. 6- 28 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 249 Remove the three T-15 Torxdrive screws that secure the Display Adapter circuit board to the Display assembly. Remove the Display Adapter from the assembly. 3. Reinstallation: Do in reverse steps a and b to reinstall the board. 6- 29 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 250 Grasp the flex circuit and pull it out of the Display assembly. 4. Reinstallation: Do following procedure to reinstall the On/Standby Switch. a. Remove the protective backing on the power flex circuit. 6- 30 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 251 Firmly press the flex circuit to the Display assembly chassis surface. Display assembly Power flex circuit Front view Display adaptor board Power flex circuit Back view Figure 6- 15: Power flex circuit removal 6- 31 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 252 5. Remove the floppy disk drive from the cartridge: a. Disconnect the cable at the rear of the cartridge. b. Remove the Phillips screws at the sides of the cartridge. 6- 32 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 253 Grasp the hard disk drive assembly by the thumb screws and pull until the handle is exposed. Grasp the handle and pull the drive out of the instrument. 4. Reinstallation: Do in reverse step 3 to reinstall the hard disk drive assembly. 6- 33 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 254 Remove the hard disk drive Figure 6- 18: Hard disk drive removal Drive cartridge bottom Drive cartridge top Pry detents (4) Figure 6- 19: Separating the halves of the drive cartridge 6- 34 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 255 Hard drive cartridge Hard disk Remove 4 drive screws Hard drive cartridge back side Figure 6- 20: Hard disk drive removal from cartridge 6- 35 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 256 Slide the CD Drive assembly away from the rear of the chassis and remove it from the instrument. CD drive assembly T-15 Torxdrive screw (2) Figure 6- 21: CD drive assembly removal 6- 36 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 257 #0 Phillips screw (4) CD drive bracket Figure 6- 22: CD drive and bracket removal 5. Reinstallation: Do in reverse steps 3 and 4 to reinstall the CD Drive assembly. 6- 37 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 258 J611 Processor board and J100 Acquisition board. 4. Reinstallation: Do in reverse step 3 to reinstall the front and rear power distribution and the PA bus interconnect boards. 6- 38 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 259 Remove the two T-15 Torxdrive screws securing the low-voltage power supply to the right-side chassis support. b. Remove the three T-15 Torxdrive screws securing the low-voltage power supply to rear chassis. 6- 39 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 260 4. Reinstallation: Do in reverse steps a through c to reinstall the low-voltage power supply. T-15 Torxdrive screw (3) Low-voltage power supply T-15 Torxdrive screw (2) Figure 6- 24: Low-voltage power supply removal 6- 40 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 261 H Press the Enter key to Load Optimal Defaults. H In the BIOS SETUP UTILITY, press the F10 key. H Press the Enter key to Save configuration changes and exit. 6- 41 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 262 Remove the three T-15 Torxdrive screws that secure ATX assembly to the top of the chassis. d. Remove the five T-15 Torxdrive screws that secure ATX assembly to the rear chassis. 6- 42 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 263 Lift the right edge of the assembly. Release the arm at the front of the assembly. Insert the free end of the arm at the middle front of the chassis. See Figure 6- -27 on page 6- -44. 6- 43 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 264 Figure 6- 27: ATX assembly troubleshooting position h. To remove the ATX assembly from the instrument: Disconnect J410, J510, J180, J182, and J182 from the processor board. 6- 44 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 265 Slide the assembly to the rear of the instrument, and lift to remove the assembly. Remove the Micro ATX board assembly from the instrument. Remove from the instrument Slide to the rear Rear of instrument Figure 6- 29: Micro ATX assembly removal 6- 45 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 266 Remove the 3/16 nut posts that secure the connectors to the rear of the ATX assembly. d. Remove the Micro ATX board from the assembly. 5. Reinstallation: Do in reverse steps 3 and 4 to reinstall the Micro ATX board. 6- 46 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 267 Removal and Installation Procedures T-15 Torxdrive screw (6) Micro ATX board Micro ATX assembly chassis 3/16 Nut posts (6) Figure 6- 31: Micro ATX board removal 6- 47 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 268 Place the fan/heatsink assembly on the microprocessor. e. Move the two latch arms to the locked position. Connect the fan power cable J2F4 to the Micro ATX board. 6- 48 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 269 J2F4 power cable Microprocessor Pull up to release the holding bracket Socket Latch arm Latch arm Fan legs Locking Micro ATX channel board P2F4 Figure 6- 32: Microprocessor removal 6- 49 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 270 4. Reinstallation: Do in reverse steps a through c to reinstall the fan assembly. CAUTION. Take care when handling the fan assembly, the fan blades are brittle and can be easily damaged. 6- 50 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 271 Removal and Installation Procedures T-15 Torxdrive screw (2) Fan assembly Disconnect from J291 Disconnect from J390 Processor board Figure 6- 33: Fan assembly removal 6- 51 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 272 PPC Processor Board 1. Locate module to be removed: Replacement of this board must be performed by a Tektronix Service Center. Locate the PPC (Power PC) processor board assembly in the locator diagram Internal Modules, Figure 6- -8, on page 6- -21. Additional modules to be removed: CAUTION.
  • Page 273 Remove the seven T-15 Torxdrive screws securing the PPC processor to the chassis support. e. Remove the two 9/32 nut posts securing the PPC processor board assembly and connector to the rear chassis. Remove the PPC board. 6- 53 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 274 Grasp the Bridge board and pull it straight up to disconnect J870 edge card connector from the PPC board. Remove the Bridge board from the PPC board assembly. See Figure 6- -36, page 6- -55. 6- 54 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 275 Removal and Installation Procedures Bridge board Processor board Figure 6- 36: Bridge board removal 4. Reinstallation: Do in reverse step 3 to reinstall the PPC processor board assembly and Bridge board. 6- 55 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 276 1. Locate module to be removed: Replacement of this board must be performed CSA7000B Series by a Tektronix Service Center. Locate the Acquisition board in the locator diagram, Figure 6- -8, on page 6- -21. Additional modules to be removed: CAUTION.
  • Page 277 Remove the TekConnect ribbon cable by grasping the sides of the connector and pulling up. b. Remove the 7/16 nut from the inside front of the 4 TekConnect buckets. 6- 57 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 278 6. Remove a TekConnect bucket: See Figure 6- -39, page 6- -59. Remove the three T-15 Torxdrive screws securing the TekConnect bucket to the Front Panel Combination assembly. 6- 58 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 279 Acquisition board and the Front-panel combination assembly. TekConnect board T-15 Torx screw (5) T-15 Torx screw (3) TekConnect bucket Figure 6- 39: TekConnect board and TekConnect bucket removal 6- 59 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 280 1. Locate module to be removed: Replacement of this board must be performed TDS7000B Series by a Tektronix Service Center. Locate the Acquisition board in the locator diagram, Figure 6- -8, on page 6- -21. Additional modules to be removed: CAUTION.
  • Page 281 6. Remove a TekConnect bucket: See Figure 6- -42, page 6- -64. Remove the three T-15 Torxdrive screws securing the TekConnect bucket to the Front Panel Combination assembly. 6- 61 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 282 Removal and Installation Procedures T-15 Torx screw (6) Acquisition circuit board Coaxial cables (2) T-15 Torx screw (8) Figure 6- 40: Acquisition circuit board removal (TDS7404B shown) 6- 62 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 283 Removal and Installation Procedures TekConnect ribbon cable T-15 Torx screw (3) Nut and washer Cables (4) Figure 6- 41: Front panel combination assembly removal (TDS7404B shown) 6- 63 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 284 Removal and Installation Procedures TekConnect board T-15 Torx screw (5) T-15 Torx screw (3) TekConnect bucket Figure 6- 42: TekConnect board and TekConnect bucket removal 6- 64 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 285: Troubleshooting

    H Faulty power supply H Faulty fan cable Front panel light comes on (instrument powers on), but H Defective fan assembly one or more fans will not H Faulty power supply operate 6- 65 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 286 H Faulty bridge board H Faulty PPC board H Defective CD-ROM CD-ROM related symptoms H Defective CD-ROM drive cable H Defective CD-ROM board H Incorrect CD-ROM configuration in the BIOS setup 6- 66 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 287: Equipment Required

    Fault Isolation Procedure Follow the primary troubleshooting tree in Figure 6- -43 for fault isolation. This tree calls for you to run the diagnostics programs, and check for BIOS errors. 6- 67 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 288 2 External monitor controls turned down 3 Defective monitor BIOS error See BIOS error message? code, Table 6- - 9 on page 6- - 77 Figure 6- 43: Primary troubleshooting tree 6- 68 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 289 The pins that should be carrying voltages are listed in Table 6- -5. The location of the J1 and J2 connectors is shown in Figure 6- -45 on page 6- -70. 6- 69 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 290 Figure 6- 45: Connectors J1 and J2 If the Instrument Will Not If there is a display on the VGA port, but not on the LCD, replace the display Boot assembly (LCD, lamps, and cable). 6- 70 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 291: Dip Switch Controls 6

    8. Check the desktop properties (right click on the desktop and select Proper- ties). On the Settings tab, 16 bit is required. Video merge will not work with other settings. If you change the setting, reboot. 6- 71 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 292: Ppc And Microatx Pc Diagnostics

    ADG VXI Addr Test ADG VXI Data Test System Interrupt Lines Trigger Lines Processor Memory 111 DRAMWalk1 112 DRAMCell 113 DRAMMarch 114 NVRAM PCI Bus 121 Scan Test Registers 131 PAI 6- 72 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 293 322 MemAddr 323 DataFormat 324 MemSpeed Acq Modes 331 SubSample 332 PeakDetect 333 HiRes Interrupt 341 Bit Tests HF Step 351 PhaseCal Vertical 371 50OhmOvld 372 ADC Connects 381 Clock Freq 6- 73 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 294 CD in the CD-ROM drive. Refer to the CheckIt Utilities online help for additional information on running the utilities. Repair or replace any failed component identified by the CheckIt Utilities. 6- 74 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 295: After Repair

    CD. If you want to order a software update, contact your Tektronix service center. After Repair After removal and replacement of a module due to electrical failure, you must perform the adjustment or software update as indicated in Table 6- -7.

  • Page 296: Bios Error Messages

    None Series Adjustment must be performed by Tektronix. Replacement of this board must be performed by Tektronix. BIOS Error Messages When the MicroATX board powers-on, the BIOS runs power-on-self-tests (POST) to check the board. The BIOS writes error codes to location 80h and tries to write the codes to the display.
  • Page 297 DMA#2 base register test passed. BIOS stack set. Going to disable cache if any. DMA unit 1 and 2 programming over. POST code to be uncompressed. Extended NMI sources enabling is in progress. 6- 77 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 298 Different buses initialization (system, static, output Optional ROM control is done. devices) to start if present. To give control for any setup required before Initialization required after optional ROM test over. optional video ROM check. 6- 78 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 299 Keyboard controller BAT test, CPU ID saved, and going to 4 GB flat mode. Amount of memory below 1M found and verified. Do necessary chipset initialization, start memory refresh, and do memory sizing. 6- 79 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 300 BIOS checkpoint from which the control is passed to the different bus routines. The high byte of the checkpoint indicates which routine is being executed. Table 6- -10 describes which function being executed. 6- 80 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 301: Bios Beep Codes

    Cannot reset parity Memory failure, first 64 KB Timer failure Not used Cannot toggle 8042 GateA20 Exception interrupt error Display memory R/W error Not used CMOS Shutdown register test error 6- 81 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 302: Dip Switch Controls

    If set, the power-on diagnostics cycle, which prevents completion of the boot sequence. Do not force power-up diagnostics Forces power-up diagnostics At power-on this switch is checked, and if set, power-up diagnostics will run. 6- 82 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 303: Diagnostic Led

    Test address lines. Write patterns to address range set by switch 1. From start address (000000000) to end address, write hex pattern aaaaaaaa. Repeat for hex patterns cccccccc and f0f0f0f0. 6- 83 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 304: Troubleshooting Using Reset Circuits

    MicroATX primary PCI bus. This is useful when Windows will not start. The Bridge board components on the MicroATX primary PCI bus are the Intel 21152 transparent bridge, and the Tvia CP5202 video adapter. 6- 84 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 305 Integrated MicroATX video adapter and the Tvia video adapter is a PCI bus video adapter. The Tvia adapter is made the primary video adapter because it can drive LCD panels. Tektronix forces the Tvia adapter to be the primary video adapter via BIOS setting Advance→ Video Configuration→...

  • Page 306: Update/Restore The Microatx Board Cmos

    If the CMOS parameters become corrupted, restore the CMOS memory using one of the following procedures: CAUTION. Only install CMOS parameters from Tektronix. CMOS parameters from other manufactures may make your instrument inoperable. If you cannot restore the CMOS memory, replace the battery.

  • Page 307: Installing An Authorization Key

    Utilities Format command. Format will destroy all data currently on the disk. 5. If reformatting the hard disk and reloading the software will not repair the disk, install a new hard disk drive. 6- 87 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 308 Troubleshooting 6- 88 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 309: Repackaging Instructions

    H Type and serial number of the instrument. H Reason for returning. H A complete description of the service required. Mark the address of the Tektronix Service Center and the return address on the shipping carton in two prominent locations. 6- 89...
  • Page 310 Repackaging Instructions 6- 90 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

  • Page 311: Options 7

    Options...

  • Page 313: Accessories 7

    China 230 V, 50 Hz power cord No power cord Software applications TDSDVI DVI compliance test application TDSDVD Optical storage analysis application TDSET3 Ethernet compliance test application TDSDDM2 Disk Drive Measurements application 7- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 314 Add one TCA-1MEG TekConnect high-impedance buffer amplifier Field upgrades CSA7BUP Many are available. Contact Tektronix (see the back of the title page) for a complete list of available CSA7UP options. TDS7BUP Many are available. Contact Tektronix (see the back of the title page) for a complete list of available TDS7UP options.
  • Page 315 O/E Electrical Out-to-CH1 Input adapter (Tektronix part number 013-0327-xx) number 013-0327-xx) O/E-to-SMA adapter (Tektronix part number 013-0326-xx) U.S. Power Cord 161-0104-00 Mouse, optical 119-6936-xx Keyboard, USB 119-B146-xx Front Cover 200-4653-xx Accessory Pouch 016-1441-xx 7- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 316 Click’N Burn Software CD 063-3575-xx Optional The accessories in Table 7- -3 are orderable for use with the instrument at the time this manual was originally published. Consult a current Tektronix catalog for additions, changes, and details. Table 7- 3: Optional accessories Accessory...
  • Page 317 TekConnect adapter, 4 GHz, 75 Ω to 50 Ω adapter with 75 Ω BNC input WSTRO WaveStar Software WSTRO GPIB cable (1 m) 012-0991-01 GPIB cable (2 m) 012-0991-00 RS-232 cable 012-1298-xx USB Keyboard 119-6633-xx Centronics cable 012-1214-xx Replacement hard disk 650-4271-xx 7- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 318 SMA 2.5 119 4517 00 119-4517-00 119 4557 00 119-4557-00 Dust cap, optical, CSA7404B 200-4104-00 Requires TCA-BNC TekConnect BNC adapter NOTE. The P6339A probe is not supported by this instrument. 7- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 319 Replaceable Electrical Parts...
  • Page 321 The modules that make up this instrument are often a combination of mechanical 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. 8- 1 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 322 Electrical Parts List 8- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 323 Diagrams...

  • Page 325: Symbols 9

    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: H Tektronix Standard 062- -2476 Symbols and Practices for Schematic Drafting H ANSI Y14.159- -1971 Interconnection Diagrams...
  • Page 326 J101 J100 HPI Probe Interface J102 Aux In Aux Out Ext Ref Sig Out Recovered Data Probe Comp Recovered Clk Ref Out CSA7000B Series Figure 9- 1: Instrument block diagram 9- 2 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 327 Replaceable Mechanical Parts...
  • Page 329 This section contains a list of the replaceable modules for the instrument. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements.
  • Page 330 Figure & Index Number Items in this section are referenced by component number. Tektronix Part Number Use this part number when ordering replacement parts from Tektronix. 3 and 4 Serial Number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.
  • Page 331 TK1943 NEILSEN MANUFACTURING INC 3501 PORTLAND RD NE SALEM, OR 97303 TK2491 TEMPO RESEARCH CORP 1340 FLYNN RD CAMARILLO, CA 93012 TK2548 XEROX CORPORATION 7431 EVERGREEN PARKWAY HILLSBORO, OR 97124 10- 3 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 332 646 CARRIBEAN DR SUNNYVALE, CA 94089- - 1108 TK6457 BEIJING MINGDAR TECHNOLOGY INC RM 213 LUIPU BLDG~NO 5 XIAGUANG- BEIJING, CN LI~CHAOYANG DISTRICT TK6592 SOURIAU USA 25 GRUMBACHER ROAD YORK, PA 17402 10- 4 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 333 0 - - - - 6 0 - - - - 8 0 - - - - 8 0 - - - - 7 0 - - - - 7 10- 5 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 334 - - 23 200- - 4521- - 00 COVER,LEFT:PC ABS,13.654L X 8.250W,TEK BLUE, 7X318 2TEK1632 - - 24 200- - 4520- - 00 COVER,TOP:PC ABS,17.200L X 13.550W,TEK BLUE, 7X318 2TEK1637 10- 6 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 335 Mechanical Parts List Figure 10- 1: External parts 10- 7 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 336 366- - 0820- - 00 KNOB,CAP:SILVER GRAY 22670 366- - 0820- - 00 - - 37 366- - 0819- - 00 KNOB,EPS:PUSH BUTTON,SILVER GRAY 22670 366- - 0819- - 00 10- 8 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 337 343- - 1682- - 00 CLAMP,HINGED FLAT CABLE,NYLON TK1943 3437- - 1682- - 00 - - 49 679- - 5705- - 00 CKT BD ASSY:IDE ADAPTER BRD,CD 7X318 679- - 5705- - 00 10- 9 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 338 Mechanical Parts List Figure 10- 2: Front panel and drives 10- 10 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 339 174- - 4798- - 00 CA ASSY:4POS 12V P4 PWR 060D9 174- - 4798- - 00 - - 26 174- - 4797- - 00 CA ASSY:20POS ATX PWR 060D9 174- - 4797- - 00 10- 11 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 340 156- - 9442- - 00 IC,MEMORY:CMOS,DRAM;ATX - - 29 174- - 4906- - 00 CA ASSY:RND RIBBON,UDMA 060D9 174- - 4906- - 00 Replacement of this part must be performed by Tektronix 10- 12 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 341 Mechanical Parts List Figure 10- 3: Power supply 10- 13 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 342 679- - 5236- - 00 - - 10 174- - 4517- - 00 CABLE, ASSY:PELTOLA,16.5L,WF 80009 174- - 4517- - 00 Replacement of this part must be performed by Tektronix 10- 14 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 343 Mechanical Parts List Figure 10- 4: Acquisition assembly, CSA7000B Series 10- 15 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 344 PNL MNT,SILVER ALLOY,0.576 MLG X 0.366 TERMN, - - 11 174- - 4517- - 00 CABLE, ASSY:PELTOLA,16.5L,WF 80009 174- - 4517- - 00 Replacement of this part must be performed by Tektronix 10- 16 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 345 Mechanical Parts List Figure 10- 5: Acquisition assembly, TDS7000B Series 10- 17 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 346 MANUAL,TECH:USER TK2548 071- - 1226- - xx 071- - 1323- - xx MANUAL,TECH:REFERENCE,ENGLISH TK2548 071- - 1323- - xx 119- - 6936- - 00 MOUSE:OPTICAL MOUSE 989644 D66- - 00029 10- 18 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 347 01963 G84- - 4100PRAUS 071- - 1227- - 01 MANUAL TECH:SERVICE TK2548 071- - 1227- - 00 016- - 1790- - 05 RACKMOUNT KIT 5Y400 016- - 1790- - 05 10- 19 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...
  • Page 348 Mechanical Parts List 10- 20 CSA7404B, TDS7704B, TDS7404B, TDS7254B & TDS7154B Service Manual...

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