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Tektronix ECO422D Instruction Manual

Sd/hd changeover unit
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Instruction Manual

ECO422D
SD/HD Changeover Unit
S/N B020000 and above
071-1792-01
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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Summary of Contents for Tektronix ECO422D

  • Page 1: Instruction Manual

    Instruction Manual ECO422D SD/HD Changeover Unit S/N B020000 and above 071-1792-01 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. 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 ........4- - 2 ECO422D Option ELSW Block Level Description ..... .
  • 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- -8 Figure 7- -2: Slide the Connector board out this way ... . . 7- -9 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 9 ......2- -6 Table 2- -3: Truth table for ECO422D switching ....
  • Page 10 Table of Contents ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 11 Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified service personnel. Do Not Operate in Wet/Damp Conditions. Do Not Operate in an Explosive Atmosphere. Keep Product Surfaces Clean and Dry. 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: CAUTION WARNING Protective Ground Refer to Manual High Voltage (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: Environmental Considerations

    Restriction of Hazardous 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. ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 16 Environmental Considerations ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 17 H How to remove and replace replaceable parts H Corrective maintenance information H Replaceable Mechanical Parts lists all replaceable parts in the ECO422D to a module level. Parts are identified on an indexed illustration to make them easier to identify.
  • Page 18 Preface ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 19 Getting Started...

  • Page 21: Figure 1- 1: Front Panel Of The Eco422D

    This does not apply to the three Option ELSW channels, which are buffered. To avoid this problem, work on an output only when the ECO422D is not in operation. Disconnect the output cable from the ECO422D before working on the cable, and verify proper termination before reconnecting the cable to the ECO422D.

  • Page 22: Figure 1- 2: Rear Panel Of The Eco422D

    These indicators remain on until cleared by the operator. Power Up Delay The ECO422D has a delay between the time power is applied and the time the ECO422D starts error detection. This delay allows source equipment to become operational before detection begins.

  • Page 23: Figure 1- 3: Front Rail Mount

    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 24: Figure 1- 4: Deep Rackmount

    Getting Started Bar nut screws Rear rack rail Figure 1- 4: Deep rackmount Rear rack rail Flush with rear rack rail Bar nut PNH screws Figure 1- 5: Shallow rackmount 1- 4 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 25: Figure 1- 6: Assembly Of Rackmounting Hardware

    Removing the Instrument. Refer to Figure 1- -7 to remove the instrument from the rack. 1. Loosen retaining screw and pull instrument outward until the stop latches snap into the holes. 2. Press stop latches and remove instrument. 1- 5 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 26: Figure 1- 7: Installing Or Removing The Rack Slides

    The instrument is firmly held in this position. To completely remove the instrument, first be sure to disconnect all cabling. Then, press both release-latch buttons (visible in the stop-latch holes) and carefully slide the instrument free from the tracks. 1- 6 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 27 Getting Started 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 28: Configuration 1

    This does not apply to the three Option ELSW channels, which are buffered. To avoid this problem, work on an output only when the ECO422D is not in operation. Disconnect the output cable from the ECO422D before working on the cable, and verify proper termination before reconnecting the cable to the ECO422D.

  • Page 29: Figure 1- 8: Example Of Eco422D Connections

    ECO422D. This section gives one example, active analog 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 30 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. The gray shading on the switches in Figure 1- -9 indicate the down position of the rocker switch.

  • Page 31: Figure 1- 9: Default Position Of The User Configuration And Mode Switches

    NTSC serial digital video (143 Mb/s) 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) 1- 11 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 32: Table 1- 2: Channel Configuration Switch Log (S1 - S11)

    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- 12 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 33: 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 34 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 35 Clear the fault indicator by pressing the Reset button. Press the Sync Source button to return to Backup sync source. Loss of Power to the Remove the power source from the ECO422D. ECO422D Note that the output signal switches to the Primary input signal.
  • Page 36 Getting Started 1- 16 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 37 Operating Basics...

  • Page 39: 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- -4.) Only one of these LEDs can be on.

  • Page 40: Figure 2- 2: Default Position Of The User Configuration And Mode Switches

    S11), which is allowed to be combined with either of the user-defined levels. BACK FRONT (SWITCHES SHOWN IN DEFAULT POSITION) Figure 2- 2: Default position of the user configuration and mode switches The following list shows the functions for each of the switches. 2- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 41: Table 2- -1: Factory Settings Of Channel Configuration

    Attenuation. Attenuation allows larger signals to have their signal level checked. The attenuator adds about 14 dB (x5) attenuation to the signal level being checked. This has no effect on the level of the output signal and only extends the 2- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 42: Connectors 2

    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 43: Figure 2- 3: Rear Panel Of The Eco422D

    50 or 60 Hz. The operating voltage range is continuous from 100 to 240 VAC ±10%. WARNING. To prevent personal injury, do not connect power to the ECO422D if the top cover is not installed. Dangerous potentials are present on the Power Supply board.

  • Page 44: Figure 2- 4: Remote Connector Pins

    Fault reporting + Fault reporting - - Ground Auto Switching (active low) If low, the automatic switching function from the front panel is disabled. The front panel cannot override this remote command. 2- 6 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 45: 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 46: 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 47: 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 The User-defined Threshold Levels are the two levels available from User Configuration switches 6 and 7.

  • Page 48: 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 49: Figure 2- 7: Selection Switches And User Level Control Locations

    11. Check to see that the sync source has not changed to Backup and no faults are on the Primary channel. 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.

  • Page 50: Exterior Cleaning 2

    (see Figure 2- -2) sets the delay between the time power is Delay applied and the time the ECO422D starts error detection. Each position of the switch increments the delay approximately 30 seconds, from position 0 (no delay) to position F (over seven minutes). The factory setting is position 5, which provides a delay of slightly under three minutes.
  • Page 51 Specifications...

  • Page 53: 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 54: Table 3- 1: General Characteristics

    - - 45 dB to 30 MHz Channels 7- - 11 - - 60 dB to 10 MHz - - 30 dB to 200 MHz - - 15 dB to 360 MHz 3- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 55: Figure 3- 1: Typical Eye-Pattern Of 20 M Of Belden 1694A Cable

    In the frequency range of 10 MHz to 1.5 GHz, the instrument approximates less than 20 meters of Belden 1694A cable. Figure 3- 1: Typical eye-pattern of 20 m of Belden 1694A cable 3- 3 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 56: Figure 3- 2: Typical Eye-Pattern Of Channels 1- 6 Hd Output

    Specifications Figure 3- 2: Typical eye-pattern of Channels 1- 6 HD output (Channels 1- 3 with Opt. ELSW) 3- 4 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 57: 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- 5 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 58: 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- 6 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 59: Table 3- 5: Environmental Characteristics

    1.33 GRMS. One hour per axis. Second Manual Handling (Shock) Drop on all sides once from a height of 24 inches. Drop on the bottom from a height of 48 inches. 3- 7 ECO422D SD/HD Changeover Unit Instruction Manual...

  • Page 60: Table 3- 6: Certifications And Compliances

    This product was certified by the GOST ministry of Russia to be in compliance with all applicable EMC regulations. FCC Compliance Emissions comply with FCC 47 CFR, Part 15, Subpart B for Class A equipment. 3- 8 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 61 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- 9 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 62 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- 10 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 63 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 65 Theory of Operation...

  • Page 67: 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 68: Figure 4- 1: Eco422D Block Diagram

    Latch Flag other channels Figure 4- 1: ECO422D Block diagram The Primary and Backup signals for each channel enter through the BNCs and are applied directly to a Relay, where one signal is switched 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 69: Figure 4- 2: Eco422D Option Elsw Block Diagram

    Figure 4- 2: ECO422D Option ELSW Block diagram In the standard instrument, switching between the Primary and Backup signals is accomplished with mechanical relays. With Option ELSW, channels four, five, and six employ electronic switching. This is faster than the mechanical relays and glitch- -free, to provide transparent switching of analog sync signals.
  • Page 70 The replacement fuse on the power supply should be a 3.15 A, 250 V fuse. The rear panel and Main board fuse requirements are listed in Replaceable Mechanical Parts. 4- 4 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 71 Performance Verification...

  • Page 73: 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 74 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 75: 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 76 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 77 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 78 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 79: Equipment Required 5

    1 GHz bandwidth, for example, a TDS7000 Series oscilloscope; Example waveform monitor: 1745A Waveform Monitor.) 75 Ω terminations. (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 80: Performance Verification Procedure 5

    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). With the addition of S13 the power up delay is adjustable, from no delay to over seven minutes (see page 2- -4).

  • Page 81: Figure 5- 1: Setup To Check Black Burst Levels

    75 Ω termination ECO422D Figure 5- 1: Setup to check Black Burst levels 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 82 Switch between 2 and 4 dB down from nominal Connect the equipment as shown in Figure 5- -1, except swap the Primary and Backup input signals at the ECO422D so that the step attenuator is on the Backup channel. Set the Channel Configuration switches to Disabled (signal not checked) for all channels (set all the DIP switches on S1 through S11 to “open”).
  • Page 83 Switch between 2 and 4 dB down from nominal Connect the equipment as shown in Figure 5- -1, except swap the Backup and Primary input signals at the ECO422D, so that the step attenuator is on the Backup input signal.
  • Page 84 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 85: Figure 5- 2: Setup To Check The Component Serial Digital Video Levels

    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 86 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 87: Figure 5- 3: Setup To Check The Serial Digital Video Composite Levels

    Switch between 2 and 5 dB down from nominal Repeat the previous two procedures for Channels 2 through 11 of the ECO422D, for standard instruments (exclude Channels 4 through 6 if Opt. ELSW is installed). Move the cables from Channel 1 to the channel under test.
  • 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 Backup. CHECK - - that the Backup signal still shows an error and automatically switches back to Primary. If the ECO422D does not continue to show the Backup signal in error after the reset, continue adding attenuation until the Backup signal switches to Primary again.

  • Page 90: Figure 5- 4: Setup To Check The Serial Audio Levels

    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 91 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 92: Figure 5- 5: Setup To Check The Component Serial Digital Video Levels

    Switch between 2 and 4 dB down from nominal Repeat the previous two procedures for Channels 2 through 11 of the ECO422D, for standard instruments (exclude Channels 4 through 6 if Opt. ELSW is installed). Move the cables from Channel 1 to the channel under test.
  • Page 93 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 94 Performance Verification CHECK - - that the Backup signal still shows an error and automatically switches back to Primary. If the ECO422D does not continue to show the Backup signal in error after the reset, continue adding attenuation until the Backup signal switches to Primary again.
  • Page 95 Adjustment Procedure...
  • Page 97 Adjustment Procedure The only adjustments required for the ECO422D are the user-defined threshold levels. 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 98 Adjustment Procedure 6- 2 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 99 Maintenance...

  • Page 101: 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 102 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 103: 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 104: Corrective Maintenance 7

    Ensure that the malfunction is 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 or downstream from the ECO422D.
  • Page 105 This does not apply to the three Option ELSW channels, which are buffered. To avoid this problem, work on an output only when the ECO422D is not in operation. Disconnect the output cable from the ECO422D before working on the cable, and verify proper termination before reconnecting the cable to the ECO422D.

  • Page 106: Tektronix Service Offerings 7

    The services include a range of calibration, repair, upgrade, and installa- tion services that are performed on- -site or at a Tektronix service depot. In addition replacement parts are available for self- -service customers.
  • Page 107 Service Centers Tektronix maintains service centers worldwide. These centers provide calibration and repair services for Tektronix instruments. They can be contacted through your Tektronix field office or representative. You can also find service and support information at: http://www.tektronix.com/serviceandsupport Not all service centers are equipped to repair or calibrate all instruments; please be prepared to provide the instrument model and serial number when calling for assistance.

  • Page 108: Remove The Connector Board 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- 8 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 109 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- 9 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 110 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 111 Replaceable Electrical Parts...
  • Page 113 Replaceable Electrical Parts Refer to the Mechanical Parts List chapter for a complete listing and description of replaceable parts for the ECO422D. 8- 1 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 114 Replaceable Electrical Parts 8- 2 ECO422D SD/HD Changeover Unit Instruction Manual...
  • Page 115 Replaceable Mechanical Parts...
  • Page 117 This section contains a list of the components that are replaceable for the ECO422D. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available from or through your local Tektronix, Inc., 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 118 Mounting Parts always appear in the same indentation as the Item it mounts, while the detail parts are indented to the right. Indented items are part of and included with, the next higher indentation. Mounting parts must be purchased separately, unless otherwise specified. ECO422D SD/HD Changeover Unit Instruction Manual 9- 2...
  • Page 119 T- - 10, TORX DR - - 27 220- - 0497- - 00 NUT,PLAIN,HEX:0.5- - 28 X 0.562 HEX,BRS CD PL - - 28 210- - 1039- - 00 WASHER,LOCK:0.521 ID,INT,0.025 THK,SST ECO422D SD/HD Changeover Unit Instruction Manual 9- 3...
  • Page 120 174- - 3370- - 01 CA ASSY,SP:DESCRETE;PSC,6,18 AWG,12.0 L,0.156 CTR,1X6,0.156 CTR,RCPT,W/FRICTION LOCK BOTH ENDS,GOLD PL (W21) (CONNECTS FROM A2J21 TO A4J2) 335- - 1453- - 00 MARKER IDENT; ECO422D ELSW CONN; SAFETY CONTROLLED (OPTION ELSW ONLY) ECO422D SD/HD Changeover Unit Instruction Manual 9- 4...
  • Page 121 161- - 0154- - 00 CA ASSY,PWR:3,1.0MM SQ,250V/10A,2.5 METER,STR, (SWISS OPTION A5 ONLY) 161- - A008- - 00 CA ASSY, PWR:THREE 2.0MM SQ, 125V, 15A, 12M L W/HOLDER &LATCH;SAFETY CONTROLLED (JAPAN OPTION A6 ONLY) ECO422D SD/HD Changeover Unit Instruction Manual 9- 5...
  • Page 122 Replaceable Mechanical Parts ECO422D SD/HD Changeover Unit Instruction Manual 9- 6...
  • Page 123 ECO422D...
  • Page 125 Appendices...
  • Page 127 Appendix A: Options This section describes the instrument options available for the ECO422D Changeover Unit. Option ELSW Option ELSW provides electronic switching on channels four, five, and six, instead of the mechanical relay switching used in the standard instrument. This enhancement provides faster, glitch- -free switching for analog sync signals.
  • Page 128 Appendix A: Options A- 2 ECO422D SD/HD Changeover Unit Instruction Manual...

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