Tektronix ECO422D Instruction Manual
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Tektronix ECO422D Instruction Manual

Sd/hd changeover unit signal generator
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Instruction Manual
ECO422D
SD/HD Changeover Unit
071-0859-01
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 Instruction Manual ECO422D SD/HD Changeover Unit 071-0859-01 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.
  • Page 2 Copyright © Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077...
  • 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. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
  • Page 5 ......... . . 7- - 4 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 6 ..........A- - 1 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 7: Table Of Contents

    Table of Contents List of Figures Figure 1- -1: Front panel of the ECO422D ..... . 1- -1 Figure 1- -2: Rear panel of the ECO422D .
  • Page 8 ......7- -9 Figure 7- -2: Slide the Connector board out this way ... . . 7- -10 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 9 ......2- -5 Table 2- -3: Truth table for ECO422D switching ....
  • Page 10 Table of Contents ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 11: General Safety Summary

    Provide Proper Ventilation. Refer to the manual’s installation instructions for details on installing the product so it has proper ventilation. Symbols and Terms Terms in this Manual. These terms may appear in this manual: ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 12 CAUTION indicates a hazard to property including the product. Symbols on the Product. The following symbols may appear on the product: Double Protective Ground CAUTION WARNING Refer to Manual High Voltage Insulated (Earth) Terminal viii ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 13 Use Care When Servicing With Power On. Dangerous voltages or currents may exist in this product. 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. ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 14 Service Safety Summary ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 15 H Specifications describes functional characteristics and performance require- ments for the ECO422D. H Theory of Operation explains how the ECO422D operates to a level sufficient to perform component level service. H Performance Verification describes how to verify the functional performance of the ECO422D.
  • Page 16 This phone number is toll free in North America. After office hours, please leave a voice mail message. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices. ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 17 Getting Started...

  • Page 19: Figure 1- 1: Front Panel Of The Eco422D

    Getting Started Product Description The ECO422D SD/HD Changeover Unit (Figure 1- -1 and Figure 1- -2) provides automatic selection of reference sources. Automatic changeover may occur upon fault detection in any active source. Automatic transfer ensures uninterrupted signals for critical applications. The ECO422D is an in-line device without internal buffers.

  • Page 20: Accessories 1

    17-¾ inches to allow clearance for the slide-out tracks. Rack slides conveniently mount in any rack that has a front-to-rear rail spacing between 15-½ and 28 inches. The ECO422D requires six inches of clearance between the instrument rear panel and any rear cabinet panel for connector space and to provide adequate air circulation.

  • Page 21: Figure 1- 3: Front Rail Mount

    Getting Started Bar nut (Use if the front rail is not tapped) Figure 1- 3: Front rail mount Bar nut screws Rear rack rail Figure 1- 4: Deep rackmount 1- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 22: Figure 1- 5: Shallow Rackmount

    (The right hand rail is Flat nut bar shown above.) 10-32 PHS screw Stop latch hole Intermediate section Figure 1- 6: Assembly of rackmounting hardware 1- 4 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 23: Figure 1- 7: Installing Or Removing The Rack Slides

    1. Loosen retaining screw and pull instrument outward until the stop latches snap into the holes. 2. Press stop latches and remove instrument. Stop latch Figure 1- 7: Installing or removing the rack slides 1- 5 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 24 Electrical Installation You can order any of the following power cord options for the ECO422D. If no power cord option is ordered, the instrument is shipped with a North American 125 V power cord and one replacement fuse.

  • Page 25: Table 1- 1: Power Cord Identification

    Figure 1- -2 shows the instrument rear panel. Connecting Power To supply power to the ECO422D, connect the power cord to the power-input connector on the rear-panel of the instrument, and then connect the power cord to the local mains supply.

  • Page 26: Figure 1- 8: Example Of Eco422D Connections

    (example: Trompeter RT- -1L). There are many different ways to configure the ECO422D. The illustration below is only one example. One thing to keep in mind, the ECO422D will automatically change to the Primary signals whenever it looses power. Therefore, always power the Backup source and the ECO422D by the same source and the Primary source separately.
  • Page 27 ECO422D. This section gives one example, analog active video. Active Analog Video. The ECO422D will pass active analog video by using the no checking mode, but there will be times when you need to check for the presence of an active video signal.

  • Page 28: Figure 1- 9: Default Position Of The User Configuration And Mode Switches

    All of these switches are available through a small access panel on top of the ECO422D, eliminating any need to remove the top cover just to change the function of the outputs.

  • Page 29: Table 1- 2: Default Configuration Of Switches

    4 / S4 5 / S5 6 / S6 7 / S7 8 / S8 9 / S9 10 / S10 11 / S11 Attenuation cannot be set on switches S1- S6. 1- 11 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 30: Figure 1- 10: Setup For The Functional Check

    Getting Started Functional Check and First Time Operation This section steps through how the ECO422D will react under its most common operating circumstances: two good signals, loss and then return of the Primary signal, loss and return of the Backup signal, and loss of power. Only two input signals are used here to avoid confusion.
  • Page 31 Power up all instruments. Enable the front panel, using the Front Panel button. Set the ECO422D to “Switch on Fault” using front-panel buttons. (This is the default at power on.) If Primary is not already the source, press the Sync Source button to make Primary the source.
  • Page 32 Getting Started Reconnect the Primary input source. (Replace the cable between the SPG422 and the Primary 1 input of the ECO422D.) Press the Reset button to clear the fault indicator LED. Return the auto switching to “Switch on Fault.” Note that the sync source is still Backup.
  • Page 33 Operating Basics...

  • Page 35: Figure 2- 1: Front-Panel Controls

    Primary or Backup input). It can be manually changed using the Sync Source button. (If the ECO422D is in Normal mode, this is only true when the other input is good or both inputs are bad. Refer to User Configuration Switch (S14- -8) on page 2- -3.) Only one of these LEDs can be on.

  • Page 36: Figure 2- 2: Default Position Of The User Configuration And Mode Switches

    Serial digital video (270 Mb/s) Analog tri- - level sync NTSC serial digital audio User defined User defined Serial digital video (1.485 Gb/s) (Channels 1- - 6) Attenuation (Channels 7- - 11) 2- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 37: Table 2- 1: Factory Settings Of Channel Configuration Switches (S1 - S11)

    For Normal operation, the user cannot switch to a bad signal whether the instrument is in manual or auto switch mode. For example, the ECO422D is in manual mode and the Primary signal is bad, while the Backup signal is good. If the user presses the Sync Source button, the output will be the Backup signal.

  • Page 38: Figure 2- 3: Rear Panel Of The Eco422D

    Sync signal. The procedure used to set these levels is on page 2- -8. Connectors Figure 2- -3 shows the layout of the rear panel of the ECO422D. Figure 2- 3: Rear panel of the ECO422D Power This instrument is designed to operate from a single-phase power source with one current-carrying conductor at or near earth-ground (the neutral conductor).

  • Page 39: Figure 2- 4: Remote Connector Pins

    Operating Basics Output. Signal output. It is either from the Primary or the Backup source. How the ECO422D is configured determines under what conditions the source changes. Backup. Input from the backup sync generator. This should be the same signal type as its Primary signal pair.

  • Page 40: Figure 2- -5: Wiring Required To Conform With Smpte

    Fault Reporting - - and + It is normally open, indicating that everything is good. It will close in the cases of: loss of power to the ECO422D or one (or more) input signals are bad. The fault is latched and will remain until the fault is cleared.

  • Page 41: State Machine Description 2

    State Machine Description Table 2- -3 is a truth table that gives the various states the ECO422D outputs based on the state of the inputs. Note that Primary is set to check a given level.

  • Page 42: Table 2- 3: Truth Table For Eco422D Switching

    Operating Basics Table 2- 3: Truth table for ECO422D switching Power User config Switch O auto O manual " " " " " " " " " " " " " " " " " " How to Adjust the...

  • Page 43: Figure 2- -6: Setup For Adjusting R265 (The User Level For

    3. Set all S14 switches “closed.” 4. Set the ECO422D to Primary Sync Source. 5. Set the ECO422D Auto Switching to “Switch on Fault.” 6. Set the step attenuator to 0 dB of attenuation. 7. Turn the potentiometer R265 fully. (You are attempting to allow the minimum signal level to pass through before the threshold is reached.)

  • Page 44: Exterior Cleaning 2

    Operating Basics 12. Slowly adjust R265 until the ECO422D switches to the Backup sync source and a fault occurs on the Primary channel. Press Reset to verify that the fault is still preset. If the Primary fault indicator LED goes out, continue adjusting the potentiometer.
  • Page 45 Specifications...

  • Page 47: Introduction 3

    Specifications Introduction The items listed in the following tables describe the performance of the ECO422D Changeover Unit. Performance Requirements are generally quantita- tive and can be tested by a Performance Verification procedure contained in the service part of this manual.

  • Page 48: Table 3- 1: General Characteristics

    Time that it takes for the relays to switch and settle. Approximately 10 msec. Power-up delay > 4 minutes, to allow source generator signals to stabilize Approximates less than 20 meters of Belden 1694A cable. 3- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 49: Figure 3- 1: Typical Eye-Pattern Of 20 M Of Belden 1694A Cable

    Specifications Figure 3- 1: Typical eye-pattern of 20 m of Belden 1694A cable Figure 3- 2: Typical eye-pattern of Channels 1- 6 HD output 3- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 50: Table 3- 2: Signal Loss Detection

    Attenuation approximately x5 Analog tri-level sync 400 to 565 mV 475 mV (between 3 and 6 dB down) Performance is verified indirectly by completing Performance Verification steps 2- 5 & 10- 11. 3- 4 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 51: Table 3- 3: Power Supply

    Supplemental information Rackmount Dimensions Height 1.734 inches (4.4 cm) Width 19.0 inches (48.3 cm) Length 22.1 inches (56.1 cm) Net Weight 10.8 lbs (4.9 kg) Shipping Weight 18 lbs, 5 oz (8.3 kg) 3- 5 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 52: Table 3- 5: Environmental Characteristics

    Class I (grounded product), as defined in IEC 1010-1, Annex H. Installation Category Installation Category II, as defined in IEC 1010-1, Annex J. Rated for indoor use only. Pollution Degree Pollution Degree 2, as defined in IEC 1010-1. 3- 6 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 53: Table 3- 6: Certifications And Compliances

    FCC Compliance Emissions comply with FCC Code of Federal Regulations 47, Part 15, Subpart B, Class A Limits. High quality shielded cables must be used to ensure compliance to the above listed standards. 3- 7 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 54 CAT II Local-level mains (wall sockets). Equipment at this level includes appliances, portable tools, and similar products. Equipment is usually cord-connected. CAT I Secondary (signal level) or battery operated circuits of electronic equipment. 3- 8 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 55 Conductive pollution, or dry, nonconductive pollution that becomes conductive due to condensation. These are sheltered locations where neither temperature nor humidity is controlled. The area is protected from direct sunshine, rain, or direct wind. 3- 9 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 56 Specifications 3- 10 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 57 WARNING The following servicing instructions are for use only by qualified personnel. To avoid injury, do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so. Refer to all safety summaries before performing any service.
  • Page 59 Theory of Operation...

  • Page 61: Theory Of Operation

    Theory of Operation This section provides information on how the ECO422D circuitry works, in order to troubleshoot the instrument. Logic Conventions Signal names are all capital letters. For example, SIGNAL. An active low signal (normally denoted by an overscore) is a signal name enclosed in parentheses.

  • Page 62: Figure 4- 1: Block Diagram Of The Eco422D

    Latch Flag other channels Figure 4- 1: Block diagram of the ECO422D The Primary and Backup signals enter through the BNCs. The signal goes directly to the Relay where one switches through to the rear-panel Output and the other terminates in 75 Ω. The rest of the circuitry determines which signal goes to the Output.

  • Page 63: Figure 4- 2: Block Diagram Of The Input Comparator

    This allows checking a broader range of signals without the Negative Peak Detectors being overdriven or saturated. The output of the Input Buffers goes to the Negative Peak Detectors. 4- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 64: Figure 4- 3: Block Diagram For The Control And Remote Circuit

    Controller PLD that then generates the control signals for the switching relays. (P_AND) (P_AND_C) (B_AND) (B_AND_C) Keyboard Remote encoder Controller Timer/ flasher Front panel led driver Watchdog timer Figure 4- 3: Block diagram for the Control and Remote circuit 4- 4 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 65 Q33 to saturate to less than 1.5 V, signaling the fault. When the LED is on, Q33 is cut off leaving less than 100 nA of leakage. The diodes, CR48 and VR1, are provided for reverse voltage and ESD protec- tion. 4- 5 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 66 (P_SELECT) and (B_SELECT) signals. (AUTO_ON) and (AUTO_OFF) are sent to drive the front-panel LED circuit. After the front panel is enabled, the ECO422D will only allow the front panel approximately 60 seconds of inactivity before it will automatically disable the front panel.

  • Page 67: Figure 4- 4: Reference Voltage And Selector Switch Farm Block Diagram

    ATTEN, is inserted. Opening the seven reference amplitude switches allows VREF to go to a negative voltage. Since the peak detector will never produce a negative voltage, the comparators will be disabled. 4- 7 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 68 The replacement fuse on the power supply should be a 3.15 A, 250 V fuse. The rear panel fuse requirements are listed in Replaceable Electrical Parts. 4- 8 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 69 Performance Verification...

  • Page 71: Calibration Data Report 5

    In addition, it can be used as a short-form Performance Check for those familiar with the Performance Verification Procedure. Only steps that have numeric Performance Requirements are included in this report form. (Some steps have been omitted.) 5- 1 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 72 5 dB down Backup NTSC Serial Digital Composite switch at 2 dB down switch at 5 dB down Switch - - Primary Certificate number is not provided, unless “Certificate of Traceability” is issued. 5- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 73: Performance Verification

    Serial Digital 270 Mb/s Switch - - switch at 2 dB down switch at 5 dB down Backup NTSC Serial Digital Composite switch at 2 dB down switch at 5 dB down Switch - - Primary 5- 3 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 74 Serial Digital 270 Mb/s Switch - - switch at 2 dB down switch at 5 dB down Backup NTSC Serial Digital Composite switch at 2 dB down switch at 5 dB down Switch - - Primary 5- 4 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 75 Serial Digital Audio Switch - - Primary switch at 2 dB down switch at 4 dB down Serial Digital Audio Switch - - Backup switch at 2 dB down switch at 4 dB down 5- 5 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 76 PAL Black Burst Switch - - Backup switch at 2 dB down switch at 4 dB down Serial Digital 270 Mb/s Switch - - switch at 2 dB down switch at 5 dB down Primary 5- 6 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 77: Equipment Required 5

    1 GHz bandwidth, for example, a TDS7000 Series oscilloscope; Example waveform monitor: 1745A Waveform Monitor.) 75 Ω terminators. (Example: Tektronix part number 011-0163-00 for serial digital video or 011-0102-01 for analog and audio) 75 Ω Cables. (Example: Tektronix part number 012-0074-00)

  • Page 78: Figure 5- 1: Setup To Check Black Burst Levels

    Set all switches on S1 through S11 to “open” to disable switches on all channels. Power the ECO422D up. (No inputs or outputs are required at this point.) Wait for the power-up delay to complete (over 4 minutes). CHECK - - that there are no error shown on the front panel.
  • Page 79 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D to “Primary” Sync Source and Auto Switch “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Primary input signal until the signal source switches to the Backup.
  • Page 80 Primary. CHECK - - that the Primary signal still shows an error and automatically switches back to Backup. If the ECO422D does not continue to show the Primary signal in error after the reset, continue adding attenuation until the Primary signal switches to Backup again.
  • Page 81 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D to “Backup” Sync Source and Auto Switch to “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Backup input signal until the signal source switches to the Primary.

  • Page 82: Figure 5- 2: Setup To Check The Component Serial Digital Video Levels

    6. Check the NTSC & PAL Black Burst for Channels 2 - - 11 Switch between 2 and 4 dB down from nominal Repeat the four previous procedures for Channels 2 - - 11 of the ECO422D. Move the cables from Channel 1 to the channel under test. Replace the switch setting for S1 as given in the following Table.
  • Page 83 Primary. CHECK - - that the Primary signal still shows an error and automatically switches back to Backup. If the ECO422D does not continue to show the Primary signal in error after the reset, continue adding attenuation until the Primary signal switches to Backup again.
  • Page 84 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D (using the front panel) to “Backup” Sync Source and Auto Switch “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Backup input signal until the signal source switches to Primary.

  • Page 85: Figure 5- -3: Setup To Check The Serial Digital Video

    CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D to “Primary” Sync Source and Auto Switch to “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Primary input signal until the signal source switches to Backup.
  • Page 86 Performance Verification CHECK - - that the Primary signal still shows an error and automatically switches back to Backup. If the ECO422D does not continue to show the Primary signal in error after the reset, continue adding attenuation until the Primary signal switches to Backup again.

  • Page 87: Figure 5- 4: Setup To Check The Serial Audio Levels

    Switch between 2 and 5 dB down from nominal Repeat the previous two procedures for Channels 2 through 11 of the ECO422D. Move the cables from Channel 1 to the channel under test. Replace the switch setting for S1 as given in the following table.
  • Page 88 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D to “Primary” Sync Source and Auto Switch to “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Primary input signal until the signal source switches to Backup.
  • Page 89 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D to “Backup” Sync Source and Auto Switch to “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Backup input signal until the signal source switches to Primary.
  • Page 90 CHECK - - that there are no errors shown for either the Primary or Backup ECO422D sync sources. Set the ECO422D (using the front panel) to “Primary” Sync Source and Auto Switch “Switch on Fault.” Add attenuation, 0.5 dB at a time, to the Primary input signal until the signal source switches to Backup.
  • Page 91 Performance Verification CHECK - - that the Primary signal still shows an error and automatically switches back to Backup. If the ECO422D does not continue to show the Primary signal in error after the reset, continue adding attenuation until the Primary signal switches to Backup again.
  • Page 92 Performance Verification 5- 22 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 93 Adjustment Procedure...
  • Page 95 Adjustment Procedure The only adjustment required for the ECO422D is the user-defined threshold levels. Adjustment Procedure How to Adjust the The user-defined threshold levels are the two levels available from User User-Defined Threshold Configuration switches SX- -6 (R266) and SX- -7 (R265). They are available so that the user can check the levels of signals other than the five predefined levels.
  • Page 96 Adjustment Procedure 6- 2 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 97 Maintenance...

  • Page 99: Preparation 7

    Inspection and Cleaning Preventive maintenance consists of cleaning, lubricating, visual inspection, checking performance, and readjusting the ECO422D on a regular schedule. The Inspection and cleaning schedule should be established based on the amount of use and the surrounding environment of the ECO422D. Under average condi- tions, a preventive maintenance check should be performed on a one year interval (severe environmental conditions may dictate a shorter time interval).
  • Page 100 Periodic checks of the transistors and integrated circuits are not recommended. The best measure of performance is the actual operation of the component in the circuit. 7- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 101: Table 7- 1: Static-Sensitive Components

    Service static-sensitive components or assemblies only at a static free workstation by qualified personnel. If soldering is involved, use a soldering iron connected to earth ground and special antistatic desoldering tools. 7- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 102: Corrective Maintenance 7

    Ensure that the malfunction exists in the instrument. This is done by making sure Procedures that the instrument is operating as intended by Tektronix (see Operating Basics), and by checking that a malfunction has not occurred upstream from the ECO422D.
  • Page 103 Determine the extent of the repair. If the necessary repair is complex, it may be advisable to contact your local Tektronix field office or representative before continuing. If the repair is minor, such as replacing a component, see the parts list for replacement information.

  • Page 104: Tektronix Service Offerings 7

    In addition, there are training programs that are available for service technicians. NOTE. When considering which service offerings best suit the current need, remember that Tektronix provides a limited parts and service warranty for all its products. No customer repairs should be attempted during the warranty period. Service Training Tektronix provides service training in a number of programs.

  • Page 105: Table 7- 2: Assemblies In The Eco422D

    Note that this information is important whether you are ordering a circuit board from the Module Exchange Center or as a new replacement part from Tektronix. Table 7- 2: Assemblies in the ECO422D Circuit board First seven digits Assembly name assembly No.
  • Page 106 Maintenance Factory Replacement Replacement parts are available through the local Tektronix field office or Parts representative. However, many common electric parts are available through local sources. Using a local source, where possible, will eliminate shipping delays. Changes to Tektronix instruments are sometimes made to accommodate improved components, as they become available, and to improve circuit performance.

  • Page 107: Removal/Replacement Instructions 7

    NOTE. During installation, remember to include the spacer strip on the BNC connectors. Remove these screws Remove these posts Figure 7- 1: Remove these screws and posts before attempting to remove the Connector board 7- 9 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 108 Figure 7- 2: Slide the Connector board out this way CAUTION. Use extreme care when sliding any of the boards to clear the rear panel because there are components on both sides of the boards. 7- 10 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 109: Repackaging Instructions 7

    Repackaging Instructions Identification Tag If the instrument is to be shipped to Tektronix Service Center for service or repair, attach a tag to the instrument showing: 1. Owner (with complete address) and the name of the person at your firm that can be contacted.
  • Page 110 Maintenance 7- 12 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 111 Replaceable Electrical Parts...

  • Page 113: Parts Ordering Information 8

    Replaceable Electrical Parts This section contains a list of the components that are replaceable for the ECO422D. Use this list to identify and order replacement parts. There is a separate Replaceable Electrical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field...

  • Page 114: Using The Replaceable Electrical Parts List 8

    These mechanical subparts are listed with their associated electrical part (for example, fuse holder follows fuse). Chassis-mounted parts and cable assemblies have no assembly number prefix and are located at the end of the electrical parts list. 8- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 115: Replaceable Electrical Parts 8

    Indicates the code number of the actual manufacturer of the part. (Code to name and address cross reference can be found immediately after this page.) (Column 6) Mfr. Part No. (Column 7) Indicates actual manufacturer’s part number. 8- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 116: Replaceable Electrical Parts

    SAN JOSE CA 95131- - 1008 OPTOELECTRONICS DIV 53387 3M COMPANY 3M AUSTIN CENTER AUSTIN TX 78769- - 2963 ELECTRONIC PRODUCTS DIV 55680 NICHICON /AMERICA/ CORP 927 E STATE PKY SCHAUMBURG IL 60195- - 4526 ECO422D SD/HD Changeover Unit Instruction Manual 8- 4...
  • Page 117 PO BOX 500 81073 GRAYHILL INC 561 HILLGROVE AVE LA GRANGE IL 60525- - 5914 PO BOX 10373 91637 DALE ELECTRONICS INC 2064 12TH AVE COLUMBUS NE 68601- - 3632 PO BOX 609 ECO422D SD/HD Changeover Unit Instruction Manual 8- 5...
  • Page 118 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2C8 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2C9 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2C10 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA ECO422D SD/HD Changeover Unit Instruction Manual 8- 6...
  • Page 119 USP1C470MCA1TP POLAR,BULK A2C56 290- - 1289- - 00 CAP,FXD,ALUM:47UF,20%,16V,0.250 X 0.276;RADIAL,NON- 55680 USP1C470MCA1TP POLAR,BULK A2C59 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2C60 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA ECO422D SD/HD Changeover Unit Instruction Manual 8- 7...
  • Page 120 281- - 0773- - 00 CAP,FXD,CERAMIC:MLC;0.01UF,10%,100V TK1743 CGB103KEX A2C107 290- - 1289- - 00 CAP,FXD,ALUM:47UF,20%,16V,0.250 X 0.276;RADIAL,NON- 55680 USP1C470MCA1TP POLAR,BULK A2C108 290- - 1289- - 00 CAP,FXD,ALUM:47UF,20%,16V,0.250 X 0.276;RADIAL,NON- 55680 USP1C470MCA1TP POLAR,BULK ECO422D SD/HD Changeover Unit Instruction Manual 8- 8...
  • Page 121 SA105E104MAA A2C156 281- - 0775- - 01 CAP,FXD,CERAMIC:MCL;0.1UF,20%,50V,Z5U,0.170 04222 SA105E104MAA A2C157 290- - 1311- - 00 CAP,FXD,ALUM:10UF,20%,50V,ESR=1.4 OHM(100KHZ,20C), 55680 UPL1H100MDH1TD 5X11MM,105C,5000HRS A2C158 290- - 1311- - 00 CAP,FXD,ALUM:10UF,20%,50V,ESR=1.4 OHM(100KHZ,20C), 55680 UPL1H100MDH1TD 5X11MM,105C,5000HRS ECO422D SD/HD Changeover Unit Instruction Manual 8- 9...
  • Page 122 04222 SA101C102MAA A2C225 281- - 0563- - 00 CAP,FXD,CERAMIC:MLC;0.47UF,20%,50V,0.150 X0.290 04222 SA305E474MAA A2C226 281- - 0770- - 00 CAP,FXD,CER DI:1000PF,20%,100V 04222 SA101C102MAA A2C227 281- - 0770- - 00 CAP,FXD,CER DI:1000PF,20%,100V 04222 SA101C102MAA ECO422D SD/HD Changeover Unit Instruction Manual 8- 10...
  • Page 123 DIODE,SIG:SCHTKY;60V,2.25PF 66958 1N6263 A2CR33 152- - 0951- - 00 DIODE,SIG:SCHTKY;60V,2.25PF 66958 1N6263 A2CR34 152- - 0141- - 02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 A2CR35 152- - 0141- - 02 DIODE,SIG:ULTRA FAST;40V,150MA,4NS,2PF 27014 FDH9427 ECO422D SD/HD Changeover Unit Instruction Manual 8- 11...
  • Page 124 222092- - 1 PNL,0.625 H X 0.187TALL W/O MTG FLANGE,W/MTG POSTS A2J7 131- - 5414- - 00 CONN,RF JACK:BNC;75 OHM,FEMALE,RTANG,PCB/REAR 00779 222092- - 1 PNL,0.625 H X 0.187TALL W/O MTG FLANGE,W/MTG POSTS ECO422D SD/HD Changeover Unit Instruction Manual 8- 12...
  • Page 125 MPSH81RLRP AMPLIFIER,MPSH81,TO- - 92 BEC,T&A A2Q10 151- - 0711- - 02 XSTR,SIG:BIPOLAR,NPN;25V,50MA,650MHZ,AMPL 04713 MPSH10RLRP A2Q11 151- - 0711- - 02 XSTR,SIG:BIPOLAR,NPN;25V,50MA,650MHZ,AMPL 04713 MPSH10RLRP A2Q12 151- - 0207- - 01 XSTR,SIG:BIPOLAR,NPN;45V,300MA,250MHZ,AMPL 27014 PN100A/D75Z ECO422D SD/HD Changeover Unit Instruction Manual 8- 13...
  • Page 126 322- - 3210- - 00 RES,FXD:METAL FILM;1.5K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G15000F A2R24 322- - 3056- - 00 RES,FXD,FILM:37.4 OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF50- - 2F37R40F A2R25 322- - 3158- - 00 RES,FXD,FILM:432 OHM,1%,0.2W,TC=T0MI,SMALL BODY 57668 CRB2D FXE 432 ECO422D SD/HD Changeover Unit Instruction Manual 8- 14...
  • Page 127 322- - 3232- - 00 RES,FXD,FILM:2.55K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G25500F A2R83 322- - 3485- - 00 RES,FXD,FILM:5.0K OHM,1%,0.2W,TC=TO,SMALL BODY 91637 CCF501G50000F A2R84 322- - 3450- - 00 RES,FXD,FILM:475K OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF50- - 2G47502F ECO422D SD/HD Changeover Unit Instruction Manual 8- 15...
  • Page 128 322- - 3222- - 00 RES,FXD:METAL FILM;2K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20000F A2R146 322- - 3056- - 00 RES,FXD,FILM:37.4 OHM,1%,0.2W,TC=T0MI,SMALL 91637 CCF50- - 2F37R40F A2R147 322- - 3318- - 00 RES,FXD:METAL FILM;20K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G20001F ECO422D SD/HD Changeover Unit Instruction Manual 8- 16...
  • Page 129 322- - 3126- - 00 RES,FXD,FILM:200 OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF501G200ROF A2R205 322- - 3228- - 00 RES,FXD,FILM:2.32K OHM,1%,0.2W,TC=T0MI,SMALL BODY 91637 CCF50- - 1G2320F A2R206 322- - 3385- - 00 RES,FXD:METAL FILM;100K OHM,1%,0.2W,TC=100 PPM 91637 CCF501G10002F ECO422D SD/HD Changeover Unit Instruction Manual 8- 17...
  • Page 130 91637 CCF501G50000F A2R265 311- - 2235- - 00 RES,VAR,TRMR:CERMET;10K OHM,20%,0.5W,0.197 TK2073 GF06UT2 103 M L SQ,TOP ADJUST A2R266 311- - 2235- - 00 RES,VAR,TRMR:CERMET;10K OHM,20%,0.5W,0.197 TK2073 GF06UT2 103 M L SQ,TOP ADJUST ECO422D SD/HD Changeover Unit Instruction Manual 8- 18...
  • Page 131 322- - 3147- - 00 RES,FXD:METAL FILM;332 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G332R0F A2R325 322- - 3147- - 00 RES,FXD:METAL FILM;332 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G332R0F A2R326 322- - 3147- - 00 RES,FXD:METAL FILM;332 OHM,1%,0.2W,TC=100 PPM 91637 CCF501G332R0F ECO422D SD/HD Changeover Unit Instruction Manual 8- 19...
  • Page 132 156- - 1699- - 00 IC,LINEAR:BIFET,OP- - AMP;DUAL,LOW OFFSET,LOW DRIFT 27014 LF412CN A2U4 156- - 1225- - 00 IC,LINEAR:BIPOLAR,COMPARATOR;DUAL,OPEN 01295 LM393P COLLECTOR,300NS A2U5 156- - 1699- - 00 IC,LINEAR:BIFET,OP- - AMP;DUAL,LOW OFFSET,LOW DRIFT 27014 LF412CN ECO422D SD/HD Changeover Unit Instruction Manual 8- 20...
  • Page 133 222092- - 1 PNL,0.625 H X 0.187TALL W/O MTG FLANGE,W/MTG POSTS A3J7 131- - 5414- - 00 CONN,RF JACK:BNC;75 OHM,FEMALE,RTANG,PCB/REAR 00779 222092- - 1 PNL,0.625 H X 0.187TALL W/O MTG FLANGE,W/MTG POSTS ECO422D SD/HD Changeover Unit Instruction Manual 8- 21...
  • Page 134 47- - 440HZ,OUT 5VDC 5A,+15V2A, - - 15V 0.5A F100 159- - 0022- - 00 FUSE,CARTRIDGE:3AG,1A,250V,FAST BLOW 71400 AGC- - 1 *ATTACHED PARTS* 162- - 0531- - 00 INSUL SLVG,ELEC:HT SHRINK,0.165 IDPOLYOLEFIN,BLK, 06090 VERSAFIT 0.02 THK W ECO422D SD/HD Changeover Unit Instruction Manual 8- 22...
  • Page 135 174- - 1495- - 00 (CONNECTED @ A2J18 & A3J19) 174- - 3370- - 00 CA ASSY,SP:DESCRETE;PSC,6,18 AWG,12.0 L,0.156 80009 174337000 CTR,1X6,0.156 CTR,RCPT,W/FRICTION LOCK BOTH ENDS,GOLD PL (CONNECTED @ A2J21 & A4J2) ECO422D SD/HD Changeover Unit Instruction Manual 8- 23...
  • Page 136 Replaceable Electrical Parts ECO422D SD/HD Changeover Unit Instruction Manual 8- 24...
  • Page 137 Diagrams...
  • Page 139 Example: ID CONTROL, (ID CONTROL), or /ID CONTROL. Abbreviations are based on ANSI Y1.1- -1972. Other ANSI standards that are used in the preparation of diagrams by Tektronix, Inc. are: H Y14.15, 1966 — Drafting Practices. H Y14.2, 1973 — Line Conventions and Lettering.
  • Page 140 ---15V SEE PARTS LIST FOR CIRCUIT BOARD EARLIER VALUES AND OUTLINE SERIAL NUMBER RANGES. PART OF A1 MAIN BOARD INSTRUMENT NAME VERTICAL INPUT SCHEMATIC NAME & NUMBER ASSEMBLY NUMBER COMPONENT LOCATOR GRID 9- 2 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 141 A1 Front Panel Board Static Sensitive Devices See Maintenance Section Front Panel Board and Schematic Diagram <1> Component Locator Chart A1 Front Panel Board. Comp Diag Comp Diag ECO422D...
  • Page 142 SYNC SOURCE AUTO SWITCHING FAULT INDICATOR FRONT PANEL PRIMARY SWITCH ON FAULT PRIMARY ENABLED ENABLE P_FAULT AUTO PRIMARY ENABLE DISABLE P_FAULT B_FAULT BACKUP DISABLED BACKUP LOCKED OUT AUTO CONNECTS PRIMARY TO J16 DISABLE BACKUP B_FAULT BACKUP MAIN RESET BOARD UNUSED PUSHBUTTON LED’S MOUNTING HOLES A1 FRONT PANEL BOARD ECO 422 Changeover Unit...
  • Page 143 A2 Main Board Component Locator (with cross-references to schematic diagrams 1, 2, 3, 4, and 5.) Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag Comp Diag Diag...
  • Page 144 A2 Main Board A2 Main board locator chart on front of this page. Static Sensitive Devices ECO422D See Maintenance Section...
  • Page 145 VOLTAGE COMPARATORS INPUT BUFFERS NEGATIVE PEAK DETECTORS +5VD RF RELAY C212 R232 47UF R231 24.3K 1.00M C106 R198 R215 R201 R202 1.50K .01UF 2.49K C108 R221 100K R222 C126 13.3K 47UF 47UF R200 CR41 2.32K C111 .1UF R197 R238 LF412 R203 2.00K CR45...
  • Page 146 Main Board Schematic Diagram <2> Component Locator Chart A2 Main Board. Partial A2 also shown on Schematics 1, 3, 4, and 5. Comp Diag Comp Diag Comp Diag Comp Diag C209 R107 C228 R108 C229 R109 R110 C230 C231 R111 C236 R112 C240...
  • Page 147 VOLTAGE COMPARATORS INPUT BUFFERS NEGATIVE PEAK DETECTORS +5VD RF RELAY C208 R138 47UF R137 24.3K 1.00M R104 R121 R107 R108 1.50K .01UF 2.49K R127 100K R128 13.3K 47UF 47UF R106 CR23 2.32K .1UF R103 R144 LF412 R109 2.00K CR27 76.8 R117 (P_AND) R119...
  • Page 148 Main Board Schematic Diagram <3> Component Locator Chart A2 Main Board. Partial A2 also shown on Schematics 1, 2, 4, and 5. Comp Diag Comp Diag Comp Diag Comp Diag C220 C221 C226 C227 C239 C250 C251 CR53 CR68 CR69 R301 R302 C189...
  • Page 149 VOLTAGE COMPARATORS INPUT BUFFERS NEGATIVE PEAK DETECTOR +5VD RF RELAY C203 47UF 24.3K 1.00M +5VD .01UF 1.50K 2.49K 100K 13.3K 47UF 47UF 2.32K .1UF 10.0K LF412 2.00K 76.8 (P_AND) 20.0K 475K .1UF C226 RELAY 20.0K .001UF 75 OHM LM393 MICROSTRIP 1.00K 75 OHM --- 5V...
  • Page 150 Main Board Schematic Diagram <4> Component Locator Chart A2 Main Board. Partial A2 also shown on Schematics 1, 2, 3, and 5. Comp Comp Comp Diag Comp Diag Diag Diag C131 CR51 R248 R344 * C132 CR52 R249 R345 * C133 CR80 R346 *...
  • Page 151 +5VD +5VD R327 U17A R329 20.0K 74AC08 U17B 10.0K (P_AND_C) 74AC08 REMOTE (PFAULT) PLCC44 TOP VIEW (P_AND) C254 .01UF +5VD +5VD U17C +5VD 74AC08 R314 R328 U18A U17D CR49 20.0K 10.0K R251 74ACT244 74AC08 1.00K (B_AND_C) (R_AUTO) (BFAULT) (R_SOURCE) (R_RESET) (B_AND) C216 CR50...
  • Page 152 Main Board Schematic Diagram <5> Component Locator Chart A2 Main Board. Partial A2 also shown on Schematics 1, 2, 3, and 4. Comp Diag Comp Diag Comp Diag Comp Diag C146 C147 R280 C148 R254 R281 C149 R255 R283 C150 R256 R284 R257...
  • Page 153 C146 C147 C151 C153 C155 C149 C157 .1UF .1UF .1UF .1UF .1UF .1UF 10UF BUF0 VOLTS0 SELECTOR SWITCH FARM BUF1 VOLTS1 BUF2 VOLTS2 BUF3 C148 C150 C152 C154 C156 C158 VOLTS3 .1UF .1UF .1UF .1UF .1UF 10UF BUF4 VOLTS4 MODE BUF5 FOR TEST ONLY --- 5V...
  • Page 154 ATTENUATOR PRIMARY 75 OHM CHANNEL OUTPUT 75 OHM BACKUP ATTENUATOR COMPONENT LEVEL INFORMATION UNAVALABLE ATTENUATOR PRIMARY 75 OHM CHANNEL OUTPUT 75 OHM BACKUP ATTENUATOR ATTENUATOR (P_AND_C) (B_AND_C) ATTEN6 PRIMARY ATTEN5 75 OHM ATTEN4 VREF6 VREF5 CHANNEL OUTPUT VREF4 VREF3 VREF2 VREF1 75 OHM BACKUP...
  • Page 155 Replaceable Mechanical Parts...
  • Page 157 Replaceable Mechanical Parts This section contains a list of the components that are replaceable for the ECO422D. Use this list to identify and order replacement parts. There is a separate Replaceable Mechanical Parts list for each instrument. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., Field...
  • Page 158 Indicates the code number of the actual manufacturer of the part. (Code to name (Column 7) and address cross reference can be found immediately after this page.) Mfr. Part Number Indicates actual manufacturer’s part number. (Column 8) ECO422D SD/HD Changeover Unit Instruction Manual 10- 2...
  • Page 159 BEAVERTON OR 97077- - 0001 PO BOX 500 80126 PACIFIC ELECTRICORD CO 747 W REDONDO BEACH GARDENA CA 90247- - 4203 PO BOX 10 85471 BOYD CORP 13885 RAMOMA AVE CHINO CA 91710 ECO422D SD/HD Changeover Unit Instruction Manual 10- 3...
  • Page 160 - - 25 - - - - - - - - - - - - - - - - - - - - - - CKT BD ASSY:MAIN BOARD (SEE A2 REPL) *MOUNTING PARTS* ECO422D SD/HD Changeover Unit Instruction Manual 10- 4...
  • Page 161 S3109 12- - H05VVF3G 00- - IEC320,RCPT,SWISS,SAFTEY CONTROLLED (SWISS OPTION A5 ONLY) - - 37 386- - 7347- - 00 PLATE, SPACER; REAR PANEL, BNC, 0.090 AL, 5052- - H3X 80009 386734700 ECO422D SD/HD Changeover Unit Instruction Manual 10- 5...
  • Page 162 Replaceable Mechanical Parts ECO422D SD/HD Changeover Unit Instruction Manual 10- 6...
  • Page 163 ECO 422...
  • Page 164 Appendices...

  • Page 166: Appendix A: Options

    This instrument is orderable with an “A” option to accommodate the various national electrical power connections. Power Cord Options Any of the following power cord options can be ordered for the ECO422D. If no power cord option is ordered, instruments are shipped with a North American 125 V power cord.

  • Page 167: Table A- 1: Power Cord Identification

    Table A- 1: Power cord identification Plug configuration Normal usage Option number North America Standard 125 V/15 A Plug NEMA 5-15P Europe 230 V United Kingdom 230 V Australia 230 V Switzerland 230 V A- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

Table of Contents