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Tektronix TG700 Service Manual
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Tektronix TG700 Service Manual

Tektronix TG700 Service Manual

Tv signal generator platform
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Service Manual
TG700
TV Signal Generator Platform
TG700 TV Signal Generator Platform
AG7 Audio Generator
AGL7 Analog Genlock Module
ATG7 Analog Test Generator
AVG7 Analog Video Generator
AWVG7 Analog Wideband Video Generator
BG7 Black Generator
DVG7 Digital Video Generator
HDVG7 HDTV Digital Video Generator
070-A800-51
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 TG700

  • Page 1 Service Manual TG700 TV Signal Generator Platform TG700 TV Signal Generator Platform AG7 Audio Generator AGL7 Analog Genlock Module ATG7 Analog Test Generator AVG7 Analog Video Generator AWVG7 Analog Wideband Video Generator BG7 Black Generator DVG7 Digital Video Generator HDVG7 HDTV Digital Video Generator...
  • Page 2 This volume contains the following service manuals: H TG700 TV Signal Generator Platform Service Manual H AG7 Audio Generator Service Manual H AGL7 Analog Genlock Module Service Manual H ATG7 Analog Test Generator Service Manual H AVG7 Analog Video Generator Service Manual...
  • Page 3 Service Manual TG700 TV Signal Generator Platform www.valuetronics.com...
  • Page 4 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 5 Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.
  • Page 6 www.valuetronics.com...
  • Page 7 ........TG700 TV Signal Generator Platform Service Manual...
  • Page 8 ........10-2 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 9: Table Of Contents

    ........10-7 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 10 ......6-10 Table 6-5: Tools required for module removal ....6-10 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 11: General Safety Summary

    Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 12 Symbols on the Product. The following symbols may appear on the product: CAUTION WARNING Double Protective Ground Not suitable for Refer to Manual High Voltage Insulated (Earth) Terminal connection to the public telecom munications network TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 13: Service Safety Summary

    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. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 14 Service Safety Summary viii TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 15: Manual Structure

    Preface This is the service manual for the TG700 TV Signal Generator Platform. This manual contains information needed to service a TG700 to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.
  • Page 16 H Names of front panel controls and menus appear in the same case (initial capitals, all uppercase, etc.) in the manual as is used on the TG700 front panel and menus. H Instruction steps are numbered unless there is only one step.

  • Page 17: Contacting Tektronix

    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. TG700 TV Signal Generator Platform Service Manual...
  • Page 18 Preface TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 19: Performance Check Interval

    Signal Generator Platform, as well as general information critical to safe and effective servicing. To prevent personal injury or damage to the TG700, consider the following before attempting service: H The procedures in this manual should be performed only by a qualified service person.

  • Page 20: Tektronix Service Offerings

    Whether providing warranty repair service or any of the other services listed below, Tektronix service technicians are well trained to service the TG700. They have access to the latest information on improvements to the TG700 as well as the latest new options.

  • Page 21: Specifications

    Specifications www.valuetronics.com...
  • Page 22 www.valuetronics.com...

  • Page 23: Product Overview

    Product Overview The TG700 TV Signal Generator Platform is a multiformat TV signal generator platform supporting both analog and digital video standards. The TG700 consists of a mainframe and up to four plug-in modules. The modules are either signal generators or they provide special functions, such as genlock capability.
  • Page 24 Product Overview TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 25: Electrical Characteristics

    Specifications Tables 1-1 through 1-3 list the electrical, environmental, and mechanical characteristics of the TG700 mainframe. For the specifications of a specific generator module or other module, refer to the module User manual. Table 1-4 lists the certification and compliances.

  • Page 26: Table 1-3: Mechanical Characteristics

    44 mm Width 438 mm Depth 559 mm Weight Approximately 5.5 kg (mainframe only, without rack rail) TG700 Total weight of the will vary depending on the number and type of modules installed. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 27: Figure 1-1: Tg700 Dimensions

    Specifications (mm) Figure 1 1: TG700 dimensions TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 28: Table 1-4: Certifications And Compliances

    U.S. nationally recognized testing UL 3111 1 Standard for electrical measuring and test equipment. laboratory listing Canadian certification CAN/CSA C22.2 No.1010.1 CSA safety requirements for electrical and electronic measuring and test equipment. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 29 Test and Measuring Installation Category II (as defined in IEC 61010 1, Annex J) Pollution Degree 2 (as defined IEC 61010 1) Safety Class I (as defined in IEC 61010 1, Annex H)-grounded product TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 30 Specifications TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 31: Operating Information

    Operating Information www.valuetronics.com...
  • Page 32 www.valuetronics.com...

  • Page 33: Installation

    250 volts. Before making connection to the power source, be sure the TG700 has a suitable two-pole, three-terminal grounding-type plug. GROUNDING. This instrument is safety Class 1 equipment (IEC designation).

  • Page 34: Table 2-1: Power-Cord Conductor Identification

    A power cord with the appropriate plug configuration is supplied with each TG700. Table 2-1 gives the color-coding of the conductors in the power cord. If you require a power cord other than the one supplied, refer to Table 2-2, Power cord identification.

  • Page 35: Table 2-2: Power Cord Identification

    Switzerland 230 V Operating Voltage This TG700 operates with any line voltage from 100–240 VAC with any line frequency from 48–63 Hz. Before plugging the cord into the outlet, be sure that the line voltage is in the proper range.

  • Page 36: Operating Environment

    Operating Temperature Operate the TG700 where the ambient air temperature is from 0_ C to +50_ C. Store the TG700 in ambient temperatures from –20_ C to +60_ C. After storage at temperatures outside the operating limits, allow the chassis to stabilize at a safe operating temperature before applying power.

  • Page 37: Repackaging Instructions

    CAUTION. If the fan on the rear panel stops working, disconnect the power cable from the AC power source. Internal components could be damaged. The TG700 displays the following warning message if the fan on the rear panel stop working:...

  • Page 38: Installed Options

    Table 2-2 on page 2-3, all options and optional accessories are listed and described in Section 7, Options. For further information and prices of instrument options, see your Tektronix Products catalog or contact your Tektronix Field Office.

  • Page 39: Figure 2-1: Mainframe Main Menu

    This section provides an overview of the mainframe main menu and submenus. Mainframe Main Menu When you power on the TG700 and the initializing process for all of the installed module is completed, the top menu item of the mainframe main menu appears on the LCD display.

  • Page 40: Figure 2-2: Preset Submenu

    This menu allows you to select and run a sequence that is already loaded into the TG700. A sequence is a series of generator settings defined using the Tcl language and SCPI commands. The TG700 loads a sequence and runs the command and settings in the order dictated by the sequences file.

  • Page 41: Figure 2-4: Frame Reset Status Submenu

    Sel e ctamodul e tobedi s pl a yed 14.985Hz:AGL7[1]:B1,B2 TG700:FRSTATUS:FRAMERESET2 Sel e ctamodul e tobedi s pl a yed 3.000Hz:BGL7[2]:B3 TG700:FRSTATUS:FRAMERESET3 Sel e ctamodul e tobedi s pl a yed 1.250Hz:BG7[2]:B1 Figure 2 4: FRAME RESET STATUS submenu TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 42: Figure 2-5: Utility Submenu

    30Mi n utes Ti m eOut:OFF 5Mi n utes 1Hour ENTER TG700:UTILITY:NETWORK ToNETWORKINFORMATIONSubmenuor Informati o n Informati o n ToNETWORKSETUPSubmenu Setup CANCEL ENTER TG700:UTILITY:DIAGNOSTICS ToDIAGNOSTICSSubmenu CANCEL Figure 2 5: UTILITY submenu 2 10 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 43: Figure 2-6: Signal Key Assign Submenu

    This menu allows you to assign signal sets to a specific test signal button on the Submenu front panel. You can also assign a frame picture file created by the Frame Picture Generator application supplied with the TG700 to the OTHER test signal button. Figure 2-6 shows the SIGNAL KEY ASSIGN submenu. Sel e ctSIGNALKEYASSIGN...

  • Page 44: Figure 2-8: Network Setup Submenu

    Submenu TG700 These parameters are used when you connect the TG700 to a remote computer (PC) so you can control the TG700 remotely from the PC, and transfer various files between the TG700 and the PC. Use the up (...

  • Page 45: Figure 2-9: Diagnostics Submenu

    Figure 2 9: DIAGNOSTICS submenu CAUTION. When you execute the diagnostic routines, be sure to save the current instrument settings to a preset, and then recall the settings after the diagnostics is completed. 2 13 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 46 Using the Menu Displays 2 14 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 47: Module Installation

    Module Installation This section provides instructions for installing and removing modules from the TG700 mainframe. A screwdriver with a #1 Phillips tip is the only tool you need to install or remove a module. CAUTION. To prevent damage to the mainframe and module, always remove the power cord before installing or removing a module.

  • Page 48: Installing A Module

    AGL7 Figure 2 10: TG700 slot numbering NOTE. Only one (1) AGL7 module may be installed in a TG700 mainframe at a time, and no more than two (2) AWVG7 modules or two (2) HDVG7 modules may be installed in a TG700 mainframe at a time. In addition, only one (1) AWVG7 module and one (1) HDVG7 module may be installed in a TG700 mainframe at a time.

  • Page 49: Figure 2-11: Removing The Blank Panel

    4. Insert the module into the slot, paying attention to the module orientation. See Figure 2-12. Figure 2 12: Installing the module 2 17 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 50: Removing A Module

    Module removal becomes easier if they are attached to the connectors on the left and right sides. 3. Use a screwdriver with a #1 Phillips tip to loosen the two screws securing the module to the mainframe. 2 18 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 51: Figure 2-14: Removing The Module

    Position the blank panel on the open mainframe slot. b. Tighten the two screws to secure the blank panel to the mainframe. A blank panel is available as an optional accessory for the TG700 main- frame. Refer to OPTIONAL ACCESSORIES on page 10-13.
  • Page 52 Module Installation 2 20 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 53: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 54 www.valuetronics.com...

  • Page 55: A10 Main Board

    This block converts the +5 V power, supplied by the Power Supply module, to –5 V, 3.3V, 8 V, and 12 V. Network Interface This block controls the Ethernet interface. The TG700 has a 10 BASE-T port on the rear panel. TG700 TV Signal Generator Platform Service Manual...

  • Page 56: Power Supply Module

    Theory of Operation Power Supply Module The Power Supply module derives the +5 V power supply voltages from the AC line and supplies it to the A10 Main board. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 57: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 58 www.valuetronics.com...

  • Page 59: Table 4-1: Equipment Required For Performance Verification

    Warm up The TG700 and test equipment must have had a warm-up period of at least 20 minutes. Equipment Required Table 4-1 lists the equipment required for this procedure.

  • Page 60: Table 4-2: Tg700 Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4 2: TG700 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum Subcarrier Frequency 3.5795444 MHz 3.5795464 MHz...

  • Page 61: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Subcarrier Frequency This test verifies that the subcarrier frequency accuracy of black burst signals.
  • Page 62 4. Set the frequency counter to trigger on the input, and then verify that the displayed frequency is within the range of 3.579544 MHz to 3.579546 MHz. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 63: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 64 www.valuetronics.com...

  • Page 65: Requirement For Adjustment

    Before doing the adjustment, note the following requirement. Warm Up Period The TG700 requires a 20 minute warm-up time in a +20_ C to +30_ C environ- ment before it is adjusted. Adjustment done before the operating temperature has stabilized may cause errors in performance.

  • Page 66: Master Clock Frequency Adjustment

    Press the left ( ) or right ( " ) arrow button to select CW, and then press the ENTER button. d. Press the CANCEL button to return the AGL7 main menu. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 67 Adjustment Procedures 4. Press the MODULE button until the TG700 main menu is displayed. 5. Press the up ( ) or down ( ) arrow button to select UTILITY, and then press the ENTER button to access the UTILITY submenu.
  • Page 68 Adjustment Procedures TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 69: Maintenance

    Maintenance www.valuetronics.com...
  • Page 70 www.valuetronics.com...

  • Page 71: Related Maintenance Procedures

    H Section 4, Performance Verification, contains procedures that may be useful in isolating problems to modules by testing the TG700 performance. H Section 5, Adjustment Procedures, addresses after repair adjustment and the interval between periodic adjustments. It contains a procedure for adjusting the master clock frequency of the TG700.
  • Page 72 CAUTION. Static discharge can damage any semiconductor component in the TG700. Preventing ESD When performing any service which requires internal access to the TG700, adhere to the following precautions to avoid damaging internal modules and their components due to electrostatic discharge (ESD).

  • Page 73: Table 6-1: Relative Susceptibility To Static-Discharge Damage

    2 = 200 to 500 V 7 = 400 to 1000 V (est.) 3 = 250 V 8 = 900 V 4 = 500 V 9 = 1200 V 5 = 400 to 600 V TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 74: Inspection And Cleaning

    TG700 adjustment. General Care The top cover helps keep dust out of the TG700, and is needed to meet EMI and cooling requirements. The top cover should be in place when operating the TG700.
  • Page 75 Exterior. To clean the TG700 exterior, perform the following steps: 1. Remove loose dust on the outside of the TG700 with a lint free cloth. 2. Remove remaining dirt with a lint free cloth dampened in a general purpose detergent-and-water solution. Do not use abrasive cleaners.

  • Page 76: Table 6-3: Internal Inspection Check List

    STOP. If, after performing steps 1 and 2, a module is clean upon inspection, skip the remaining steps. 3. If steps 1 and 2 do not remove all the dust or dirt, the TG700 may be spray washed using a solution of ethyl alcohol by performing steps 4 through 8.
  • Page 77 7. Dry all parts with low-pressure, deionized air. 8. Dry all components and assemblies in an oven or drying compartment using low-temperature circulating air. Lubrication. There is no periodic lubrication required for the TG700. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 78 Maintenance TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 79: Removal And Installation Procedures

    H A disassembly procedure for removal of all the major modules from the TG700 at one time and for reassembly of those modules into the TG700. Such a complete disassembly is normally only done when completely cleaning the TG700. (Instructions for doing the actual cleaning are found under Inspection and Cleaning at the beginning of this section.)

  • Page 80: General Instructions

    Internal Modules H Power supply module Equipment Required. Most modules in this TG700 can be removed with a screwdriver handle mounted with a #2 Phillips tip. Use this tool whenever a procedure step instructs you to remove or install a screw unless a different size screwdriver is specified in that step.

  • Page 81: Figure 6-1: Tg700 Orientation

    7mm Nut Driver Socket or driver for 7mm nuts TG700 Orientation In this manual, procedures refer to “front,” “back,” “top,” etc. of the TG700. Figure 6-1 shows how the sides are referenced. Figure 6 1: TG700 orientation 6 11 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 82: Figure 6-2: External Modules

    Removal and Installation Procedures Line cord Top cover LCD module Front cover A20 Front Key board Figure 6 2: External modules 6 12 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 83: Figure 6-3: Internal Modules

    Removal and Installation Procedures A40 LAN board Power supply module A10 Main board Main frame Figure 6 3: Internal modules 6 13 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 84: Access Procedure

    Do the procedures Line Cord and Top cover on page 6 15. Procedures for Internal Modules A10 Main board p.6 20 Power supply module p.6 21 Figure 6 4: Guide to removal procedures 6 14 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 85: Procedures For External Modules

    Use a screwdriver with a #2 Phillips tip to remove the two screws securing the front of the top cover to the TG700. b. Slide the top cover toward the rear and then lift it off the TG700. See Figure 6-5, page 6-16.

  • Page 86: Figure 6-5: Top Cover Removal

    Removal and Installation Procedures Figure 6 5: Top cover removal 6 16 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 87 Use a screwdriver with a #2 Phillips tip to remove the three screws securing the front-panel unit to the top of the chassis. b. Set the TG700 so its top is down on the work surface and its front is facing you.

  • Page 88: Figure 6-6: Front-Panel Unit Removal

    3. Remove the A20 Front Key board: See Figure 6-7. a. Use a screwdriver with a #2 Phillips tip to remove the four screws securing the A20 board to the front cover. 6 18 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 89: Figure 6-7: Disassembly Of Front-Panel Assembly

    6. Reinstallation: Perform steps 2 through 5 in reverse order to reinstall the front-panel assembly. Front frame LCD module Front cover A20 Front Key board Figure 6 7: Disassembly of front panel assembly 6 19 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 90 Locate the module to be removed in the locator diagram Internal modules, Figure 6-3, page 6-13. 2. Orient the instrument: Set the TG700 so its bottom is down on the work surface and its right side is facing you.

  • Page 91: Figure 6-8: A10 Main Board Removal

    Locate the module to be removed in the locator diagram Internal modules, Figure 6-3, page 6-13. 2. Orient the instrument: Set the TG700 so its bottom is down on the work surface and its back is facing you. 6 21 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 92 Pull the RFI filter away. 7. Reinstallation: a. Perform steps 4 through 6 in reverse order to install all the modules. b. Perform step 3 in reverse order to reinstall the power supply module. 6 22 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 93: Figure 6-9: A40 Lan Board, Fan, And Rfi Filter Removal

    Removal and Installation Procedures Top cover A40 LAN board J120 J110 RFI filter Ground lead J120 Figure 6 9: A40 LAN board, fan, and RFI filter removal 6 23 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 94 Removal and Installation Procedures 6 24 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 95: Troubleshooting

    Perform the following procedures to execute the diagnostics: 1. Power on (plug in) the TG700 with the FRONT PANEL ENABLE button pressed. This starts up the instrument in Factory mode. 2. Wait until initialization of the mainframe and installed modules is com- pleted.

  • Page 96: Troubleshooting Trees

    Troubleshooting Trees Start Insert four generator modules (DVG7, HDVG7, or BG7 Option CB) that are functioning correctly into the TG700 mainframe, and then connect the power cable to the AC line connector. Is the fan in the Replace the power supply module.

  • Page 97: Figure 6-11: Troubleshooting Procedure (2)

    ? with the network. Can the instrument communicate with the network ? Replace the power supply module. Done Figure 6 11: Troubleshooting procedure (2) 6 27 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 98 Troubleshooting TP880 (VCC) J700 J630 J620 J610 J600 TP890 (GND) Figure 6 12: A10 Main board (view from top) 6 28 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 99 Options www.valuetronics.com...
  • Page 100 www.valuetronics.com...
  • Page 101 Frame picture generation feature will be provided with your TG700 and frame pictures and test patterns can be generated when this option is specified. Option D1 Description A calibration data test result report will be provided with the TG700 when this option is specified. TG700 TV Signal Generator Platform Service Manual...
  • Page 102 Options TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 103: Electrical Parts List

    Electrical Parts List www.valuetronics.com...
  • Page 104 www.valuetronics.com...
  • Page 105 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. TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 106 Electrical Parts List TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 107 Diagrams www.valuetronics.com...
  • Page 108 www.valuetronics.com...
  • Page 109 H Block diagram of the TG700 H Interconnect diagram of the TG700 The Block diagram shows the modules and functional blocks in the TG700. The Interconnect diagram shows how the modules in the TG700 connect together. TG700 TV Signal Generator Platform Service Manual...

  • Page 110: Figure 9-1: Tg700 Block Diagram

    Frame Pulse CPU & Memory Oscillator Converter Generator Network DC/DC Interface Converter Module I/F Power Connect Module Slots Board Power Supply Board RFI Filter 10 BASE T Figure 9 1: TG700 block diagram TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 111: Figure 9-2: Tg700 Interconnect Diagram

    J630 J620 J610 J600 J100 Power Connect Module Slots Board J120 J110 W400 W300 J110 Board Power W100 Supply J120 RFI Filter 10 BASE T W200 Figure 9 2: TG700 Interconnect diagram TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 112 Diagrams TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 113: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 114 www.valuetronics.com...

  • Page 115: Parts Ordering Information

    Mechanical Parts List This section contains a list of the replaceable modules for the TG700 mainframe. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative.

  • Page 116: Using The Replaceable Parts List

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.
  • Page 117 TAIPEI, TAIWAN ROC 2W733 BELDEN CORPORATION 2200 US HIGHWAY 27 SOUTH RICHMOND IN 47375-0010 PO BOX 1980 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR BEAVERTON, OR 97077-0001 PO BOX 500 10 3 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 118 351-0104-03 SL SECT,DWR EXT:12.625 L,W/O HARDWARESAFETY 80009 212-A041-00 SCREW,MACHINE;M4X8MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 211-A245-00 SCREW,MACHINE;M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 161-0216-00 CABLE ASSY,PWR,:3,18 AWG,2.5M L,BLACK,SAFETY 80009 CONTROLLED (STANDARD ACCESSORY) 10 4 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 119: Figure 10-1: Main Chassis

    See Figure 10 4 for detailed view Front panel unit See Figure 10 3 Main frame for detailed view See Figure 10 2 for detailed view Figure 10 1: Main chassis 10 5 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 120 STRIP,7MM WX1MM T,W/ADHESIVE 348-A132-00 GASKET,SHIELD:CONDUCTIVE URETHANE FORM 80009 STRIP,7MM WX1MM T,W/ADHESIVE 348-A559-00 MARKER,IDENT:MKD WARNING 80009 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 348-A133-00 GASKET,SHIELD:CONDUCTIVE URETHANE FORM 80009 STRIP,5.5MM WX13MM T,W/ADHESIVE 10 6 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...

  • Page 121: Figure 10-2: Main Frame

    Mechanical Parts List Figure 10 2: Main frame 10 7 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 122 CA ASSY,SP,ELEC:16,28AWG,20CM L,FLAT 80009 174-B791-00 CA ASSY,SP,ELEC:14,28AWG,15CM L,FLAT 80009 671-B082-00 CIRCUIT BOARD ASSY:A20 FRONT KEY,389-B032-XX 80009 WIRED 348-A120-00 GASKET SHIELD:CONDUCTIVE URETHANE 80009 FORM,2MMX4MM,W/ADHESIVE [E02S040020] 348-A132-00 GASKET,SHIELD:CONDUCTIVE URETHANE FORM 80009 STRIP,7MMWX1MMT,W/ADHESIVE TAPE 10 8 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 123 Mechanical Parts List Figure 10 3: Front panel unit 10 9 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 124 CA ASSY,SP,ELEC:0-N 9-N,10CM L 80009 174-B789-00 CA ASSY,SP,ELEC:10,28AWG,30CM L,FLAT 80009 174-B788-00 CA ASSY,SP,ELEC:8,18AWG,10CM L,2-N 80009 671-B084-00 CIRCUIT BOARD ASSY:A40 LAN CONNECT,389-B034-XX 80009 WIRED 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR SONY/TEK 80009 10 10 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 125 Mechanical Parts List Figure 10 4: Power supply module 10 11 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 126 SPRING,CONICAL:VXI MOUNTING SCREW,0.26MM 80009 SUS304,5.4MM L 213-1129-00 SCREW,MACHINE:M2.5X11MM L,PAN HD,STL,NI PL,CROSS 80009 REC & SLOTTED [322401-05] 348-A128-00 SCREW,MACHINE:M2.5X11MM L,PAN HD,STL,NI PL,CROSS 80009 REC & SLOTTED [322401-05] Figure 10 5: Blank panel 10 12 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 127 TRK SL OUT SECT:STATIONARY & INTERMEDIATESAFETY TK0191 CONTROLLED 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R).SAMPLE TK0191 WAVEFORM,APPLI 070-A799-XX MANUAL,TECH:USERS TK0191 161-0216-00 CABLE ASSY,PWR,:3,18 AWG,2.5M L,BLACK 80009 (STANDARD ONLY) OPTIONAL ACCESSORIES 614-A021-00 BLANK PANEL 80009 070-A800-XX MANUAL,TECH:SERVICE,TG700 TK0191 10 13 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 128 Mechanical Parts List 10 14 TG700 TV Signal Generator Platform Service Manual www.valuetronics.com...
  • Page 129 www.valuetronics.com...
  • Page 130 www.valuetronics.com...
  • Page 131 Service Manual Audio Generator www.valuetronics.com...
  • Page 132 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 133 ..........Contacting Tektronix .
  • Page 134 Table of Contents Maintenance Maintenance ..........6–1 Preparation .
  • Page 135 Table of Contents List of Figures Figure 2–1: AG7 module main menu ......2–2 Figure 2–2: CHANNEL submenu .
  • Page 136 Table of Contents AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 137: Manual Structure

    Preface This is the service manual for the AG7 Audio Generator module. This manual contains information needed to service an AG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 138: Related Manuals

    Related Manuals The following documents are related to the AG7 Generator module. H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 139: Specifications

    Specifications www.valuetronics.com...
  • Page 140 www.valuetronics.com...

  • Page 141: Product Description

    This section contains a general product description of the AG7 Generator module followed by the operating specifications of the module. Product Description The AG7 Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The module can output serial digital audio signals that comply with the AES/EBU standard.

  • Page 142: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 through 1–4 list the electrical characteristics of the AG7 Generator module. Table 1-1: AES/EBU serial digital audio outputs Characteristic Performance requirements Reference information Connector Number of channels 1+2, 3+4, 5+6, and 7+8 Quantized resolution 20 or 24 bits User selectable Audio tone Frequency...

  • Page 143: Environmental Characteristics

    Specifications Table 1-3: 48 kHz CLOCK output (cont.) Characteristic Performance requirements Reference information Output level User selectable by the internal jumper. Level 1 is selected at the factory. Level 1 CMOS compatible High u 2.1 V, Low t 0.8 V Level 2 1"0.1 V Measured across 75 W.
  • Page 144 Specifications AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 145: Operating Information

    Operating Information www.valuetronics.com...
  • Page 146 www.valuetronics.com...

  • Page 147: Operating Procedure

    3. Following the initialization process the mainframe main menu appears, as shown below. TG700 : PRESET 4. Press the front-panel MODULE button until the AG7 module main menu appears, as shown below.

  • Page 148: Ag7 Module Main Menu

    Operating Instructions AG7 Module Main Menu You can select the audio channel whose parameters are to be changed, set the audio data resolution, select the frame reset signal to be synchronized, and adjust the timing offset for the audio signal outputs, using the AG7 module main menu. Use the up ( ) or down ( ) arrow button to scroll through the main menu.
  • Page 149 Operating Instructions CHANNEL Submenu This menu allows you to set the frequency, amplitude, and audio click of the selected audio channel. Use the up ( ) or down ( ) arrow button to scroll through the menu items. Figure 2–2 shows the CHANNEL sabmenu. From CHANNEL PARAMETERS in the main menu Inactive...
  • Page 150 Operating Instructions Setting the Clock Output The output level of the 48 kHz clock signal can be set to either a CMOS Level compatible level or 1 V. This feature is available through jumper J452 on the circuit board. Figure 2–4 shows the location of J452. ( 1+2 ) ( 3+4 ) ( 5+6 )

  • Page 151: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 152 www.valuetronics.com...
  • Page 153 Theory of Operation This section describes the basic operation of the major circuit blocks in the AG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 154 Theory of Operation Channel 1+2 Buffer Interface Channel 3+4 Buffer Audio Data Controller Channel 5+6 Buffer Audio Memory Channel 7+8 Buffer SILENCE Silence 48 kHz 48 kHz CLOCK 48 kHz Clock Decoder Figure 3-1: Simplified block diagram of the AG7 Generator module AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 155: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 156 www.valuetronics.com...

  • Page 157: Equipment Required

    Tektronix 764 Oscilloscope Bandwidth: 200 MHz or higher Tektronix TDS540D Length: 42 inches Tektronix part no. 012 0074 00 75 W BNC cable Tektronix part no. 011 0103 02 75 W feed through terminator Tektronix part no. 011 0102 01...

  • Page 158: Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: AG7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum AES/EBU Serial Digital Audio Output Level 900 mV 1100 mV 900 mV...

  • Page 159: Performance Verification Procedures

    Be sure you have performed the Preparation for Performance Verification before proceeding. Performance verification procedures can be performed individually if desired. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Serial Digital Audio...
  • Page 160 ... . . Amplitude 3. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Use the up ( ) or down ( ) arrow button to select RECALL.
  • Page 161 Performance Verification 75 W BNC cable 75 W coax terminator TG700 mainframe rear panel Digital audio monitor rear panel (764) AG7 module Figure 4-2: Second equipment connection for verifying the serial digital audio outputs 12. On the digital audio monitor front panel, press the MENU button to display the menu.
  • Page 162 3. Use the oscilloscope to measure that the signal amplitude is as follows: Low: < 0.8 V High: > 2.1 V This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 163: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 164 www.valuetronics.com...
  • Page 165 Adjustments The AG7 Generator module does not require any adjustments. AG7 Audio Generator Service Manual www.valuetronics.com...
  • Page 166 Adjustments AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 167: Maintenance

    Maintenance www.valuetronics.com...
  • Page 168 www.valuetronics.com...

  • Page 169: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 170 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.

  • Page 171: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 172 Maintenance c. Pack dunnage or urethane form between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.

  • Page 173: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the AG7 Generator module from the mainframe. 2. Disconnect these cables: H The cable from J400 at 1+2 connector.
  • Page 174 Removal and Replacement 3. Use a screwdriver with a #2 Phillips tip to remove the four screws securing the AG7 circuit board to the chassis. 4. Lift the circuit board up and away from chassis, and then place it on a static free surface.

  • Page 175: Troubleshooting

    Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 176: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 as follows: 1. Connect the power cable to the instrument. 2. Wait until the mainframe and the module completely initialize. Check that no error messages appear on the display. 3. Press the front panel MODULE button.
  • Page 177 Troubleshooting Power off and remove the module, and Is the module then install it into the TG700 mainframe operating correctly? that is functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 178 Troubleshooting 6-10 AG7 Audio Generator Service Manual www.valuetronics.com...
  • Page 179 Option www.valuetronics.com...
  • Page 180 www.valuetronics.com...
  • Page 181 Option This section describes option that is available for the AG7 Generator module. The following option is available. H Option D1 (Test data report) Option D1 Description A calibration data test result report will be provided with the AG7 Generator module when this option is specified.
  • Page 182 Option AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 183: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 184 www.valuetronics.com...
  • Page 185 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. AG7 Audio Generator Service Manual www.valuetronics.com...
  • Page 186 Replaceable Electrical Parts AG7 Audio Generator Service Manual www.valuetronics.com...
  • Page 187 Diagram www.valuetronics.com...
  • Page 188 www.valuetronics.com...
  • Page 189 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the AG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 190 Diagram AG7 Audio Generator Service Manual www.valuetronics.com...

  • Page 191: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 192 www.valuetronics.com...

  • Page 193: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 194: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 195 Mechanical Parts List Replaceable parts list Fig. & Tektronix part Serial no. Serial no. Mfr. index number effective discont'd Name & description code Mfr. part number number 10-1 116-A001-00 EXCHANGE MODULE:AG7 80009 10-1-1 441-A267-00 CHASSIS,MODULE AG7:ASSY 80009 333-A404-00 PANEL,REAR:AG7,AL 80009 214-4946-00 SPRING,CONICAL:VXI MOUNTING SCREW,0.26 MM...
  • Page 196 Mechanical Parts List Figure 10-1: AG7 Generator module exploded view 10-4 AG7 Audio Generator Service Manual www.valuetronics.com...
  • Page 197 www.valuetronics.com...
  • Page 198 www.valuetronics.com...
  • Page 199 Service Manual AGL7 Analog Genlock Module www.valuetronics.com...
  • Page 200 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 201 ..........Contacting Tektronix .
  • Page 202 Table of Contents Maintenance Maintenance ..........6–1 Preparation .

  • Page 203: Table 1-2: Environmental Characteristics

    Table of Contents List of Figures Figure 2–1: AGL7 module main menu ......2–2 Figure 2–2: GENLOCK submenu .
  • Page 204 Table of Contents AGL7 Analog Genlock Module Service Manual www.valuetronics.com...

  • Page 205: Manual Structure

    Preface This is the service manual for the AGL7 Analog Genlock module. This manual contains information needed to service an AGL7 Genlock module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 206: Related Manuals

    Related Manuals The following documents are related to the AGL7 Genlock module H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 207: Specifications

    Specifications www.valuetronics.com...
  • Page 208 www.valuetronics.com...

  • Page 209: Product Description

    This section contains a general product description of the AGL7 Genlock module followed by the operating specifications of the module. Product Description The AGL7 Genlock module is designed to be installed in the TG700 TV Signal Generator Platform. The module provides genlock function for the mainframe and installed modules.

  • Page 210: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 and 1–2 list the electrical characteristics of the AGL7 Genlock module. Table 1-1: Genlock function Characteristic Performance requirements Reference information Input configuration 75 W loop through REF inputs 75 W terminated CW input Return loss u40 dB 5 MHz u35 dB...
  • Page 211 Specifications Table 1-2: Black burst signal and HDTV trilevel sync signal outputs Characteristic Performance requirements Reference information Connector Number of outputs BLACK1, BLACK2, and BLACK3 Configuration BLACK1 Black burst BLACK1 always generates Black burst. BLACK2 Black burst or Trilevel sync When the trilevel sync signal is selected, the signal to be the same signal as BLACK 3 is output.

  • Page 212: Environmental Characteristics

    Specifications Environmental Characteristics Tables 1–3 lists the environmental characteristics of the AGL7 Genlock module. Table 1-3: Environmental characteristics Characteristic Description Temperature Operating 0_ C to +50_ C Non operating -20_ C to +60_ C Relative Humidity Operating 20% to 80% (No condensation) ; Maximum wet bulb temperature 29.4_ C Non operating 5% to 90% (No condensation) ;...

  • Page 213: Operating Information

    Operating Information www.valuetronics.com...
  • Page 214 www.valuetronics.com...

  • Page 215: Operating Procedure

    3. Following the initialization process the mainframe main menu appears, as shown below. TG700 : PRESET 4. Press the front-panel MODULE button until the AGL7 module main menu appears, as shown below.
  • Page 216 Operating Instructions AGL7 Module Main Menu You can select the genlock source and the output whose parameters will be changed using the AGL7 module main menu. Use the up ( ) or down ( ) arrow button to scroll through the main menu. Figure 2–1 shows the AGL7 module main menu.
  • Page 217 Operating Instructions Select GENLOCK in the main menu Internal 525 SYNC AGL7 [1] : GENLOCK : SOURCE NTSC Burst 625 SYNC Internal NTSC Burst with 10 Field ID HD SYNC PAL Burst ENTER To TIMING submenu AGL7 [1] : GENLOCK : TIMING (Page 2-4) CANCEL * Except when Internal is selected...
  • Page 218 Operating Instructions NOTE. When you change signal format, synchronization shock occurs; the signal format changes immediately at the output as you change the format selection. SIGNAL Submenu This menu allows you to select the black burst signal for the NTSC, NTSC No Setup, and PAL formats.

  • Page 219: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 220 www.valuetronics.com...

  • Page 221: Analog Genlock

    Theory of Operation This section describes the basic operation of the major circuit blocks in the AGL7 Genlock module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Analog Genlock The Analog Genlock consists of the following blocks.
  • Page 222 Theory of Operation D/A Converter & Amp This block consists of a D/A converter, two amplifiers, and a filter. It converts the digital data from the black burst generator or trilevel sync generator to an analog signal and re-constructs the signal for output. The “D/A Converter & Amp 3”...

  • Page 223: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 224 www.valuetronics.com...

  • Page 225: Equipment Required

    Tektronix TDS540D Video measurement set Tektronix VM700T Option 01/11 Waveform vector monitor Tektronix 1765 TV signal generator Tektronix TG700 with AGL7 Analog Genlock module Frequency counter Frequency range: 0.1 Hz to 1250 MHz ANRITSU MF 1603A Precision: 7 digits or higher Length: 42 inches Tektronix part no.

  • Page 226: Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: AGL7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum Black Output (NTSC) Blanking Level BLACK 1 -50 mV +50 mV...

  • Page 227: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Genlock Function This test verifies that the genlock function is operating correctly. The following...
  • Page 228 10. Align the PAL burst vector with the compass rose of the display. 11. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Press the up ( ) or down ( ) arrow button to select RECALL.
  • Page 229 ENTER button. Press the CANCEL button to return the module main menu. 13. Verify that the displayed vector display is locked and the EXT.REF LED on the TG700 mainframe front panel lights. 14. Press the left ( ) or right ( "...
  • Page 230 Press and hold the MODULE, FORMAT, and FRONT PANEL ENABLE buttons on the TV signal generator (TG700) simultaneously until TG700 Preset appears in the display, then release the MODULE and FORMAT buttons to re-start the instrument in Factory mode.
  • Page 231 ENTER button. 27. Verify that the displayed vector display is locked and the EXT.REF LED on the TG700 mainframe front panel lights. 28. Change the BNC cable connection from BLACK 2 connector to BLACK 3 connector on the TV signal generator (AGL7 module).
  • Page 232 Performance Verification 2. Select the HD SYNC (SAME AS BLACK3) signal for BLACK 2 as follows: a. Press the up ( ) or down ( ) arrow button to select SELECT OUTPUT. b. Press the left ( ) or right ( "...
  • Page 233 Performance Verification Black Burst Outputs This test verifies the blanking level, burst amplitude, and sync amplitude of black burst signals. The following equipment is required for the test: H Oscilloscope H Video measurement set H 75 W feed-through terminator H 75 W terminator Perform the following procedure to verify that the blanking level, burst amplitude, and sync amplitude of black burst signals.
  • Page 234 Performance Verification 3. Set the oscilloscope settings as indicated below: Vertical ... . . 50 mV/div Vertical offset ..Horizontal ... 1 ms/div Horizontal position .
  • Page 235 75 W coax terminator Video measurement set rear panel (VM700T Option 01/11) AGL7 module TG700 mainframe rear panel 75 W BNC cable Figure 4-3: Equipment connection for verifying burst and sync amplitude 10. Press the Measure button on the video measurement set to open the Measure mode display.
  • Page 236 3. Output the NTSC subcarrier calibration signal as follows: a. Press and hold the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously until TG700 Preset appears in the display, then release the MODULE and FORMAT buttons to re-start the instrument in Factory mode.
  • Page 237 4. Set the frequency counter to trigger on the input, and then verify that the displayed frequency is within the range of 3.5795444 MHz to 3.5795464 MHz. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. 4-13 AGL7 Analog Genlock Module Service Manual www.valuetronics.com...
  • Page 238 Performance Verification 4-14 AGL7 Analog Genlock Module Service Manual www.valuetronics.com...

  • Page 239: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 240 www.valuetronics.com...

  • Page 241: Requirements For Adjustment

    When adjusting the output offset, output gain, and clock timing, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual.
  • Page 242 Preparation To perform the output offset and gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the AGL7 circuit board.
  • Page 243 Figure 5-2: Equipment connection for adjusting the output offset and gain 2. Press and hold the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously until TG700 Preset is displayed, then release the MODULE and FORMAT buttons to re-start the instrument in Factory mode.
  • Page 244 Adjustment Procedures 5. Adjust R691 so that the output offset is 0 V"1 mV. 6. Move the BNC cable connection from the BLACK 1 connector to the BLACK 2 connector on the AGL7 Genlock module. 7. Locate variable resistor R491 on the AGL7 circuit board. See Figure 5–1. 8.
  • Page 245 Preparation To perform the clock timing adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the AGL7 circuit board.
  • Page 246 Adjustment Procedures c. Press the CANCEL button to return the AGL7 main menu. d. Press the up ( ) or down ( ) arrow button to select SELECT OUTPUT. e. Press the left ( ) or right ( " ) arrow button to select BLACK 1, and then press the ENTER button.
  • Page 247 Adjustment Procedures CH1 signal (TP501) 4.0 "0.5 ns CH2 signal (TP430) Figure 5-3: Timing relationship between CH1 and CH2 signals 11. Move the CH1 probe from TP501 to TP502. 12. Change the horizontal fine timing of the BLACK 3 output from –7.0 ns to + 7.0 ns and verify that the CH2 signal moves at least 13.5 ns.
  • Page 248 Adjustment Procedures c. Adjust R472 so that the CH2 signal is delayed by 8"0.5 ns from the CH1 signal. d. Change the horizontal fine timing of the BLACK 1 output from –10.0 ns to + 10.0 ns and verify that the CH2 signal moves at least 18.5 ns. If the CH2 signal still moves less than 18.5 ns, turn R473 completely clockwise and then repeat steps a through d.

  • Page 249: Maintenance

    Maintenance www.valuetronics.com...
  • Page 250 www.valuetronics.com...

  • Page 251: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 252 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.

  • Page 253: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 254 Maintenance c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.

  • Page 255: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the AGL7 Genlock module from the mainframe. 2. Disconnect the cables at J000 (REF), J002 (REF), J040 (CW), J930 (BLACK 1), J830 (BLACK 2), and J880 (BLACK 4) on the AGL7 circuit board.
  • Page 256 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the six screws securing the AGL7 circuit board to the chassis.

  • Page 257: Troubleshooting

    Genlock module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 258: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 as follows: 1. Connect the power cable to the instrument. 2. Wait until the mainframe and the module completely initialize. Check that no error messages appear on the display. 3. Press the front panel MODULE button.
  • Page 259 Troubleshooting Power off and remove the module, then Is the module install it into a TG700 mainframe that is operating correctly? functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 260 Troubleshooting 6-10 AGL7 Analog Genlock Module Service Manual www.valuetronics.com...
  • Page 261 Option www.valuetronics.com...
  • Page 262 www.valuetronics.com...
  • Page 263 Option This section describes option that is available for the AGL7 Genlock module. The following option is available. H Option D1 (Test data report) Option D1 Description A calibration data test result report will be provided with the AGL7 Genlock module when this option is specified.
  • Page 264 Option AGL7 Analog Genlock Module Service Manual www.valuetronics.com...

  • Page 265: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 266 www.valuetronics.com...
  • Page 267 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. AGL7 Analog Genlock Module Service Manual www.valuetronics.com...
  • Page 268 Replaceable Electrical Parts AGL7 Analog Genlock Module Service Manual www.valuetronics.com...
  • Page 269 Diagram www.valuetronics.com...
  • Page 270 www.valuetronics.com...
  • Page 271 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the AGL7 Genlock module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 272 Diagram AGL7 Analog Genlock Module Service Manual www.valuetronics.com...

  • Page 273: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 274 www.valuetronics.com...

  • Page 275: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 276: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 277 CABLE ASSY,RF:75OHM COAX(RG179),7.5CM L,BNC TO 80009 174-B851-00 CABLE ASSY,RF:75OHM COAX(RG179),5.5CM L,BNC TO 80009 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 342-A146-00 INSULATOR,PLATE:HEAT 80009 CONDUCTOR,RUBBER,20MMX20MMX100MM THK [TC1000-TKC] STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS...
  • Page 278 Mechanical Parts List Figure 10-1: AGL7 Genlock module exploded view 10-4 AGL7 Analog Genlock Module Service Manual www.valuetronics.com...
  • Page 279 www.valuetronics.com...
  • Page 280 www.valuetronics.com...
  • Page 281 Service Manual ATG7 Analog Test Generator www.valuetronics.com...
  • Page 282 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 283 ..........Contacting Tektronix .
  • Page 284 Table of Contents Maintenance Maintenance ..........6–1 Preparation .
  • Page 285 Table of Contents List of Figures Figure 2–1: ATG7 module main menu ......2–5 Figure 2–2: SELECT OUTPUT submenu .
  • Page 286 Table of Contents ATG7 Analog Test Generator Service Manual www.valuetronics.com...

  • Page 287: Manual Structure

    Preface This is the service manual for the ATG7 Analog Test Generator module. This manual contains information needed to service an ATG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 288: Related Manuals

    Related Manuals The following documents are related to the ATG7 Generator module. H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 289: Specifications

    Specifications www.valuetronics.com...
  • Page 290 www.valuetronics.com...

  • Page 291: Product Description

    This section contains a general product description of the ATG7 Generator module followed by the operating specifications of the module. Product Description The ATG7 Generator module is designed for installation in the TG700 TV Signal Generator Platform. The module is an analog test signal generator that provides NTSC/PAL analog composite signals.

  • Page 292: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 through 1–4 list the electrical characteristics of the ATG7 Generator module. Table 1-1: Black burst and timing pulse outputs Characteristic Performance requirements Reference information Connector Number of outputs BLACK 1 and BLACK 2 Output impedance, typical 75 W Black burst output signals NTSC and NTSC No Setup...
  • Page 293 Specifications Table 1-2: Color bars signal output Characteristic Performance requirements Reference information Connector Number of outputs BARS Output impedance, typical 75 W Output signals NTSC and NTSC No Setup SMPTE Color Bar 100 % Color Bar 75 % Color Bar 40 % Flat Field Black Burst Black Burst with Field REF...
  • Page 294 Specifications Table 1-3: Test signal output Characteristic Performance requirements Reference information Connector Number of outputs SIGNAL Output impedance, typical 75 W Output signals Refer to Table on page 2-3 for detailed information about the output signals. ID text Maximum 18 characters Luminance amplitude accuracy "1 % Measured at 700 mV.

  • Page 295: Environmental Characteristics

    Specifications Environmental Characteristics Tables 1–5 lists the environmental characteristics of the ATG7 Generator module. Table 1-5: Environmental characteristics Characteristic Description Temperature Operating 0_ C to +50_ C Non operating -20_ C to +60_ C Relative Humidity Operating 20 % to 80 % (No condensation) ; Maximum wet bulb temperature 29.4_ C Non operating 5 % to 90 % (No condensation) ;...
  • Page 296 Specifications ATG7 Analog Test Generator Service Manual www.valuetronics.com...

  • Page 297: Operating Information

    Operating Information www.valuetronics.com...
  • Page 298 www.valuetronics.com...

  • Page 299: Operating Procedure

    3. The top menu item of the mainframe main menu shown below appears on the display after initialization is complete. TG700 : PRESET 4. Press the front-panel MODULE button until the ATG7 module main menu appears, as shown below.
  • Page 300 Operating Instructions Refer to ATG7 Module Main Menu beginning on page 2–4 for detailed information about the main menu items and the submenu items. Selecting an Output Signal The ATG7 Generator module provides the capability to output test signals assigned to the corresponding test signal buttons from the SIGNAL connector. When you output a signal from the connector, you need to select a signal format and output signal.
  • Page 301 Operating Instructions Selecting a Signal All the signal sets available in the module are already assigned to corresponding test signal buttons. When you press any of the buttons, one of the signals in the signal set is output. For example, when you press the COLOR BAR test signal button, you can output the 100% Color Bars signal in the Color Bars signal set.

  • Page 302: Atg7 Module Main Menu

    Operating Instructions Table 2-1: Signal set assigned to the test signal buttons (Cont.) Button name Signal set Signals in the signal set PAL format 100% Colour Bars, 75% Colour Bars, COLOR BAR Color Bars 100% Colour Bars Over Red, 75% Colour Bars Over Red LINEARITY Linearity 5 Step, 10 Step, Modulated 5 Step,...
  • Page 303 Operating Instructions Selection by the MODULE button ATG7 [x] : STATUS : NTSC SMPTE Color Bars ENTER BLACK 1 ATG7 [x] : SELECT OUTPUT To SELECT OUTPUT submenu BLACK 2 BLACK 1 (page 2-6) BARS CANCEL ENTER ATG7 [x] : ID TEXT To ID TEXT submenu (page 2-7) CANCEL...
  • Page 304 Operating Instructions SELECT OUTPUT This menu allows you to set the video format, signal, and timing offset for the Submenu BLACK 1, BLACK 2, or BARS output. You can also set the ID text overlay for the BARS output using this menu. Figure 2–2 shows the SELECT OUTPUT submenu.
  • Page 305 Operating Instructions ID TEXT Submenu This menu allows you to edit text that is overlaid on the signal for the SIGNAL and BARS outputs, and to set the display position of the text. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 306 Operating Instructions TIMING Submenu This menu allows you to adjust the timing offset of the selected output relative to the internal reference signal (frame reset signal). Use the up ( ) or down ( arrow button to scroll through the menu. Figure 2–5 shows the TIMING submenu.

  • Page 307: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 308 www.valuetronics.com...
  • Page 309 Theory of Operation This section describes the basic operation of the major circuit blocks in the ATG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 310 Theory of Operation Black Burst D/A Converter BLACK 1 Generator 1 & Amp 1 Interface D/A Converter Black Burst BLACK 2 & Amp 2 Generator 2 D/A Converter BARS BARS Memory & Amp 3 Generator SIGNAL D/A Converter Memory SIGNAL Generator &...

  • Page 311: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 312 www.valuetronics.com...

  • Page 313: Equipment Required

    Bandwidth: 200 MHz or higher Tektronix TDS540D Video measurement set Tektronix VM700T Option 01/11 Length: 42 inches Tektronix part no. 012 0074 00 75 W BNC cable Tektronix part no. 011 0103 02 75 W feed through terminator Tektronix part no. 011 0102 01...

  • Page 314: Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: ATG7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum SIGNAL Output (Tested format : NTSC) Luminance Amplitude 707.2 mV 721.0 mV...
  • Page 315 Performance Verification Table 4-2: ATG7 calibration data report (Cont.) Step Function Tested Minimum Cal Data Maximum BLACK 1 and BLACK 2 Outputs Timing Pulse Amplitude BLACK 1 (Peak to Peak value) 900 mV 1100 mV BLACK 2 (Peak to Peak value) 900 mV 1100 mV SIGNAL, BARS, BLACK 1, and BLACK2 Outputs (Common function)

  • Page 316: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Timing Pulse Outputs This test verifies the pulse amplitude of the H drive signal from the BLACK 1 (BLACK 1 and BLACK 2) and BLACK 2 outputs.
  • Page 317 Performance Verification 2. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Press the up ( ) or down ( ) arrow button to select RECALL. c. Press the left ( ) or right ( "...
  • Page 318 Performance Verification Black Burst Outputs This test verifies the blanking level, burst amplitude, and sync amplitude of black burst signals. The following equipment is required for the test: H Oscilloscope H Video measurement set H 75 W BNC cable H 75 W feed-through terminator H 75 W coax terminator Perform the following procedure to verify the blanking level, burst amplitude, and sync amplitude of black burst signals.
  • Page 319 Performance Verification 4. Set the oscilloscope settings as indicated below: Vertical ... . . 50 mV/div Vertical offset ..Horizontal ... 1 ms/div Horizontal position .
  • Page 320 Performance Verification 75 W BNC cable 75 W coax terminator TG700 mainframe rear panel Video measurement set rear panel (VM700T Option 01/11) ATG7 module Figure 4-2: Equipment connection for verifying burst and sync amplitude 12. Press the Measure button on the video measurement set to open the Measure mode display.
  • Page 321 Performance Verification Luminance and This test verifies the luminance and chrominance gain of the 75% colour bar Chrominance Gain (BARS over red signal from the BARS output. The following equipment is required for the test: Output) H Video measurement set H 75 W feed-through terminator H 75 W coax terminator Perform the following procedure to verify the luminance and chrominance gain...
  • Page 322 Performance Verification Luminance Amplitude This test verifies the luminance amplitude of the 75% color bars signal (for (SIGNAL Output) NTSC) and the 75% colour bars signal (for PAL) from the SIGNAL output. H Video measurement set H 75 W feed-through terminator H 75 W coax terminator Perform the following procedure to verify the luminance amplitude of the 75% color bars signal (for NTSC) and the 75% colour bars signal (for PAL) from the...
  • Page 323 Performance Verification PAL Format. 1. Select the 75% Colour Bars signal for SIGNAL as follows: a. Press the FORMAT button to select PAL, and then press the ENTER button. b. Press the COLOR BAR button to select 75% Colour Bars. 2.
  • Page 324 Performance Verification Chrominance to This test verifies the chrominance to luminance gain and delay of the FCC Luminance Gain and composite signal (for NTSC) and the CCIR17 signal (for PAL) from the SIGNAL output. Delay (SIGNAL Output) H Video measurement set H 75 W feed-through terminator H 75 W coax terminator Perform the following procedure to verify the chrominance to luminance gain...
  • Page 325 Performance Verification b. Press the OTHER button to select CCIR 17. 17. Press the Measure button on the video measurement set to open the Measure mode display. 18. Touch the Video Standard soft key to recognize the applied video signal as PAL.
  • Page 326 Performance Verification 27. In the Measure mode display, touch the DGDP soft key to open the differential gain and phase measurement display. 28. Press the Menu button, and then touch the Average soft key and rotate the front-panel knob to set the value to 256. 29.
  • Page 327 Performance Verification Luminance Linearity Error This verifies the luminance linearity error of the 5 step signal from the SIGNAL (SIGNAL Output) output. H Video measurement set H 75 W feed-through terminator H 75 W coax terminator Perform the following procedure to verify the luminance linearity error of the 5 step signal from the SIGNAL output.
  • Page 328 6. Verify that the amplitude is within the range of – 0.08 dB to + 0.08 dB (0.5 MHz to 4.8 MHz). This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. 4-16 ATG7 Analog Test Generator Service Manual...

  • Page 329: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 330 www.valuetronics.com...

  • Page 331: Requirements For Adjustment

    Access When adjusting the output offset and output gain, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. Equipment Required Table 5–1 lists the equipment required to adjust the output offset, output gain,...
  • Page 332 Preparation To perform the output offset and gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the ATG7 circuit board.
  • Page 333 Adjustment Procedures 75 W BNC cable Digital multimeter TG700 mainframe BNC T connector rear panel BNC female to dual banana adapter ATG7 module 75 W coax terminator Figure 5-2: Equipment connection for adjusting the output offset and gain 2. Press the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously, and then release the MODULE and FORMAT buttons to re-start the instrument in Factory mode.
  • Page 334 Adjustment Procedures 11. Adjust R691 so that the output offset is 0 V"1 mV. 12. Move the BNC cable from the SIGNAL connector to the BARS connector on the ATG7 Generator module. 13. Locate variable resistor R791 on the ATG7 circuit board. See Figure 5–1. 14.

  • Page 335: Maintenance

    Maintenance www.valuetronics.com...
  • Page 336 www.valuetronics.com...

  • Page 337: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 338 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.

  • Page 339: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 340 Maintenance c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.

  • Page 341: Removal And Replacement

    Replacing the Rear Panel To replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the ATG7 Generator module from the mainframe. 2. Disconnect the cables at J830 (BLACK 1), J880 (BLACK 2), J930 (SIG- NAL) and J980 (BARS) on the ATG7 circuit board.
  • Page 342 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the five screws securing the ATG7 circuit board to the chassis.

  • Page 343: Troubleshooting

    Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 344: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 as follows: 1. Connect the power cable to the instrument. 2. Wait until the mainframe and the module completely initialize. Check that no error messages appear on the display. 3. Press the front panel MODULE button.
  • Page 345 Troubleshooting Power off and remove the module, and Is the module then install it into the TG700 mainframe operating correctly? that is functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 346 Troubleshooting 6-10 ATG7 Analog Test Generator Service Manual www.valuetronics.com...
  • Page 347 Option www.valuetronics.com...
  • Page 348 www.valuetronics.com...
  • Page 349 Option This section describes option that is available for the ATG7 Generator module. The following option is available. H Option D1 (Test data report) Option D1 Description A calibration data test result report comes with the ATG7 Generator module when you specify this option. ATG7 Analog Test Generator Service Manual www.valuetronics.com...
  • Page 350 Option ATG7 Analog Test Generator Service Manual www.valuetronics.com...

  • Page 351: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 352 www.valuetronics.com...
  • Page 353 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. ATG7 Analog Test Generator Service Manual www.valuetronics.com...
  • Page 354 Replaceable Electrical Parts ATG7 Analog Test Generator Service Manual www.valuetronics.com...
  • Page 355 Diagram www.valuetronics.com...
  • Page 356 www.valuetronics.com...
  • Page 357 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the ATG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 358 Diagram ATG7 Analog Test Generator Service Manual www.valuetronics.com...

  • Page 359: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 360 www.valuetronics.com...

  • Page 361: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 362: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 363 SHLD GASKET,ELEK:FINGER TYPE,5.1MM LX6.4MM 80009 W,BE-CU [97-645-02] 174-B851-00 CABLE ASSY,RF:75OHM COAX(RG179),5.5CM L,BNC TO 80009 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX 80009 STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS TK0191 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R) TK0191 OPTIONAL ACCESSORIES 070-A800-XX...
  • Page 364 Mechanical Parts List Figure 10-1: ATG7 Generator module exploded view 10-4 ATG7 Analog Test Generator Service Manual www.valuetronics.com...
  • Page 365 www.valuetronics.com...
  • Page 366 www.valuetronics.com...
  • Page 367 Service Manual AVG7 Analog Video Generator www.valuetronics.com...
  • Page 368 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 369 ..........Contacting Tektronix .
  • Page 370 Table of Contents Maintenance Preparation ............6–1 Inspection and Cleaning .
  • Page 371 Table of Contents List of Figures Figure 2–1: Front-panel test signal buttons ..... 2–3 Figure 2–2: AVG7 module main menu .
  • Page 372 Table of Contents Figure 5–7: Location of the variable resistors and capacitors for the frequency response adjustment ......5–12 Figure 5–8: Equipment connection for adjusting the frequency response...

  • Page 373: Manual Structure

    Preface This is the service manual for the AVG7 Analog Video Generator module. This manual contains information needed to service an AVG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 374: Related Manuals

    Related Manuals The following documents are related to the AVG7 Generator module: H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 375: Specifications

    Specifications www.valuetronics.com...
  • Page 376 www.valuetronics.com...

  • Page 377: Product Description

    Product Description The AVG7 Analog Video Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The TG700 platform must be running version 3.1 or later firmware. The module is an analog video signal generator which provides analog compos- ite and component video signals in various formats.

  • Page 378: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 through 1–2 list the electrical and environmental characteristics of the AVG7 Generator module. Table 1-1: Output channels Characteristic Performance requirements Reference information Channel 1 (CH 1) Number of outputs Output signals Y, G, or composite Each component of a composite signal can be turned On or Off using the VIDEO submenu.

  • Page 379: Environmental Characteristics

    Specifications Table 1-2: Common output characteristics (cont.) Characteristic Performance requirements Reference information Line time distortion Measured with FCC composite signal. v0.5% Field time distortion Measured with field square wave. v0.5% K factor 2T5 pulse v0.5% Pulse/bar ratio, typical 1:1 within 0.5% with 2T5 pulse and bar signal.
  • Page 380 Specifications AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 381: Operating Information

    Operating Information www.valuetronics.com...
  • Page 382 www.valuetronics.com...

  • Page 383: Operating Procedure

    3. Following the initialization process the mainframe main menu appears, as shown below. TG700 : PRESET 4. Press the front-panel MODULE button until the AVG7 module main menu appears, as shown below. AVG7 [x] : STATUS : NTSC 100% Color Bars 5.
  • Page 384 Operating Instructions 6. Press the front-panel arrow buttons to select the desired main menu item or submenu item. Refer to AVG7 Module Main Menu beginning on page 2–8 for detailed information about the main menu items and the submenu items. Selecting an Output Signal When you output a signal from the AVG7 Generator module, you need to select a signal format and output signal.
  • Page 385 Operating Instructions Selecting a Signal All signal sets available in the module are already assigned to the corresponding test signal buttons (see Figure 2–1). When you press any of the buttons, one of the signals in the signal set is output. For example, when you press the COLOR BAR test signal button, you can output the 100% Color Bars signal in the Color Bars signal set.
  • Page 386 Operating Instructions Table 2-1: Signal set assigned to the test signal buttons (Cont.) Button name Signal set Signals in the signal set MONITOR Monitor Convergence Pattern, Gray Window, 100% Red Field, 2 Level Pedestal & Pluge, 4 Level Pedestal & Pluge, 75% Red Field, Monitor Setup, White Window, Safe Area PULSE BAR Pulse &...
  • Page 387 Operating Instructions Table 2-1: Signal set assigned to the test signal buttons (Cont.) Button name Signal set Signals in the signal set MONITOR Monitor Convergence, Monitor Setup Matrix, 100% Red Field, 75% Red Field, White Window, Safe Area PULSE BAR Pulse &...
  • Page 388 Operating Instructions Table 2-1: Signal set assigned to the test signal buttons (Cont.) Button name Signal set Signals in the signal set ----- ----- OTHER ----- ----- 525 YPbPr format COLOR BAR Color Bars 100% Color Bars, 75% Color Bars LINEARITY Linearity 5 Step, Ramp, Oversize Ramp,...
  • Page 389 Operating Instructions Table 2-1: Signal set assigned to the test signal buttons (Cont.) Button name Signal set Signals in the signal set 625 GBR format 100% Color Bars, 75% Color Bars COLOR BAR Color Bars LINEARITY Linearity Oversize Ramp, Luminance Ramp, Shallow Ramp, Shallow Ramp Matrix, 5 Step FLAT FIELD Flat Fields...
  • Page 390 Operating Instructions AVG7 Module Main Menu You can set the logo, circle, and text overlay, timing offset, APL feature of the signal outputs using the AVG7 module main menu. Use the up ( ) or down ( ) arrow button to scroll through the main menu. Figure 2–2 shows the AVG7 module main menu.
  • Page 391 Operating Instructions Select MOVING PICTURE in the main menu AVG7 [x] : MOVING PICTURE Set the number of samples to be scrolled H Step : 0 Sample (s) AVG7 [x] : MOVING PICTURE Set the number of lines to be scrolled V Step : 0 Line (s) AVG7 [x] : MOVING PICTURE Set the period in frames to be scrolled...
  • Page 392 Operating Instructions LOGO Submenu This menu allows you to select a logo to overlay on the output test signal, and to set the display position of the logo. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 393 Operating Instructions ID TEXT Submenu This menu allows you to edit text that is overlaid on the output test signal, and to set the display position of the text. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 394 Operating Instructions CIRCLE Submenu This menu allows you to create a circle overlaid on the output test signal and set its position on the display. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–7 shows the CIRCLE submenu. Select Circle in the OVERLAY submenu AVG7 [x] : OVERLAY : CIRCLE...
  • Page 395 Operating Instructions TIMING Submenu This menu allows you to adjust the timing offset of the output signals relative to the internal reference signal (frame reset signal). Use the up ( ) or down ( arrow button to change the menu items. Figure 2–8 shows the TIMING submenu.
  • Page 396 Operating Instructions VIDEO Submenu This menu allows you to set the output channel configuration when a composite signal is being output and to enable or disable the signal output of each channel. You can also set whether or not a sync signal is multiplexed with the B and R signal when a GBR signal is being output.
  • Page 397 Operating Instructions APL Submenu This menu allows you to set the APL and Bounce features for the test signal outputs. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–10 shows the APL submenu. Select APL in the main menu APL OFF High APL...
  • Page 398 Operating Instructions 2-16 AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 399: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 400 www.valuetronics.com...
  • Page 401 Basic Operation Description This section describes the basic operation of the major circuit blocks in the AVG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 402 Theory of Operation Interface D/A Converter Line Memory & Amp for Y/G D/A Converter Line Memory Address Overlay Pb/B & Amp for Pb/B Generator Controller Line Memory D/A Converter Pr/R for Pr/R & Amp Frame Overlay Memory Memory Figure 3-1: Simplified block diagram of the AVG7 Generator module AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 403: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 404 www.valuetronics.com...

  • Page 405: Equipment Required

    Tektronix VM700T Option 01/11 Digital multimeter 5 1/2 digits FLUKE 8842A Peak detector amplifier Tektronix part number. 015 0408 00 and TM500 series power supply Peak detector head Tektronix part number 015 0413 00 Color picture monitor SONY BVMD14H5J and BKM129X...

  • Page 406: Calibration Data Report

    Table 4-1: Equipment required for performance verification (Cont.) Item Minimum requirement Recommended equipment BNC T connector Tektronix part number 103 0030 00 BNC female to dual banana Tektronix part number 103 0090 00 adapter Calibration Data Report Photocopy this form and use it to record the performance test results.
  • Page 407 Performance Verification Table 4-2: AVG7 calibration data report (Cont.) Step Function Tested Minimum Cal Data Maximum Chrominance to Luminance Gain Ratio (Measured on DAC test signal) -1.0% 1.0% CH 1 Output v1.0% -1.0% 1.0% CH 2 Output v1.0% -1.0% 1.0% CH 3 Output v1.0% Line Time Distortion (Measured on NTSC: FCC Composite signal) ------...

  • Page 408: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. DC Offset and Amplitude This test verifies the DC offset and amplitude error of the channel outputs. The...
  • Page 409 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 3. Select the DAC Gain (GBR) : 0 mV calibration signal as follows: a.
  • Page 410 Performance Verification 16. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AVG7 Generator module. 17. Read the value on the digital multimeter, and note this value as CH3_DC1. 18. Verify that CH3_DC1–CH3_DC0 is within the range of 693.0 mV to 707.0 mV.
  • Page 411 BLACK 1 connector on the test signal generator to the CH 3 input connector on the oscilloscope as shown in Figure 4–2. Oscilloscope (TDS784D) Test signal generator (ATG7) AVG7 module TG700 mainframe rear panel 75 W signal adapter 75 W feed through termination 75 W BNC cable...
  • Page 412 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 7. Set the test signal generator (ATG7 module) settings as indicated below: Output selection .

  • Page 413: Frequency Response

    Performance Verification Frequency Response This test verifies the frequency response of the DAC test signal from the CH 1, CH 2, and CH 3 outputs. The following equipment is required for the test: H Oscilloscope H Peak detector H Peak detector head H Test signal generator H 75 W feed-through termination H Three 75 W BNC cables...
  • Page 414 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 6. Set the test signal generator (ATG7 module) settings as indicated below: Output selection .
  • Page 415 Performance Verification 7. Select the 525 GBR signal format as follows: a. Press the MODULE button to display the AVG7 main menu. b. Press the FORMAT button to select 525 GBR, and then press the ENTER button. c. Press the COLOR BAR button. 8.
  • Page 416 Performance Verification Figure 4-4: Verifying the signal amplitudes from 500 kHz to 5 MHz 12. Move the peak detector head from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module and repeat steps 10 and 11. 13.
  • Page 417 2. Use the 75 W coaxial termination to terminate the other loopthrough to the CHAN A connector on the video measurement set. 75 W BNC cable 75 W coaxial termination TG700 mainframe rear panel Video measurement set rear panel (VM700T Option 01/11)
  • Page 418 Performance Verification 9. Press the Select Line button and rotate the front-panel knob to set the measurement line to 17 (Field=1 Line=17). 10. Verify that the line time distortion is less than or equal to 0.5%. 11. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module and repeat step 10.
  • Page 419 Performance Verification 8. Press the Select Line button and rotate the front-panel knob to set the measurement line to 17 (Field=1 Line=17). 9. Verify that the field time distortion is less than or equal to 0.5%. 10. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module and repeat step 9.
  • Page 420 Performance Verification 8. Press the Select Line button and rotate the front-panel knob to set the measurement line to 17 (Field=1 Line=17). 9. Verify that the K-2T value and K-PB value are within the range of –0.5% to +0.5%. 10. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module and repeat step 9.
  • Page 421 Performance Verification 4. Set the Y video signal to off as follows: a. Press the up ( ) or down ( ) arrow button to select VIDEO:Y. b. Press the left ( ) or right ( " ) arrow button to select OFF, and then press the ENTER button.
  • Page 422 Performance Verification 15. Verify that the pk-pk value of the differential phase is less than or equal to 0.5 degree. 16. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module and repeat steps 14 and 15. 17.
  • Page 423 Performance Verification 26. Repeat steps 10 through 17. Color Bars Signal Check This test verifies that the 75% color bars signal is normally output from all of the channels. The following equipment is required for the test: H Color picture monitor H Three 75 W BNC cables H Three 75 W coaxial termination Perform the following procedure to verify that the 75% color bars signal is...
  • Page 424 75 W coaxial termination /R IN 75 W BNC cable 75 W BNC cable TG700 mainframe rear panel AVG7 module Figure 4-6: Equipment connection for checking the color bars signal 5. Set the display setting of the color picture monitor to the GBR mode.
  • Page 425 CH 3 connector to the lower CH 3 connector on the AVG7 Generator module and repeat step 8. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. 4-21 AVG7 Analog Video Generator Service Manual...
  • Page 426 Performance Verification 4-22 AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 427: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 428 www.valuetronics.com...

  • Page 429: Requirements For Adjustment

    The AVG7 Generator module requires a 20 minute warm-up time in a +20 _C to +30 _C environment before it is adjusted. Adjustment done before the operating temperature has stabilized may cause errors in performance. WARNING. To avoid potential shock, use caution when removing the TG700 mainframe top cover with power connected. Access When adjusting the AVG7 Generator module, remove the top cover of the TG700 mainframe.
  • Page 430 Preparation To perform the output offset and gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the AVG7 circuit board.
  • Page 431 Procedure WARNING. To avoid serious injury, do not touch exposed connectors or compo- nents when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 W BNC cable, BNC T connector, 75 W coaxial termination, and...
  • Page 432 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 3. Select the DAC Gain (GBR) : 0 mV calibration signal as follows: a.
  • Page 433 Adjustment Procedures 18. Adjust R751A and R751B so that the output gain is 700.4 mV"1 mV. 19. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AVG7 Generator module. 20. Locate variable resistors R651A (coarse) and R651B (fine) on the AVG7 circuit board.
  • Page 434 To perform the frame timing and clock timing adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the test points on the AVG7 circuit board.
  • Page 435 Adjustment Procedures 5. Set the oscilloscope settings as indicated below: Vertical scale ..CH 1: 500 mV/div, CH 2: 1V/div Vertical position ..–2.0 div Vertical offset .
  • Page 436 Preparation To perform the group delay adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors and capacitors on the AVG7 circuit board.
  • Page 437 Procedure WARNING. To avoid serious injury, do not touch exposed connectors or compo- nents when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 W BNC cable and the 75 W signal adapter to connect the upper CH 1 connector on the AVG7 Generator module to the CH 1 input connector on the oscilloscope as shown in Figure 5–5.
  • Page 438 Adjustment Procedures 3. Set the oscilloscope settings as indicated below: Vertical scale ..CH 1: 5 mV/div, CH 2: 1.00 V/div Bandwidth ... 250 MHz (CH 1) Horizontal scale .
  • Page 439 Adjustment Procedures Figure 5-6: Adjusting the baseline of the modulated 20T pulse signal 10. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AVG7 Generator module. 11. Adjust C704B and C735A so that the baseline of the modulated 20T pulse signal is flat.

  • Page 440: Frequency Response Adjustment

    Preparation To perform the frequency response adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors and capacitors on the AVG7 circuit board.
  • Page 441 Adjustment Procedures Oscilloscope (TDS784D) Test signal generator (ATG7) AVG7 module TG700 mainframe rear panel 75 W feed through Peak detector head 75 W BNC cable termination Peak detector amplifier (installed in the TM500 series power supply) 75 W BNC cable...
  • Page 442 Adjustment Procedures 7. Select the 525 GBR signal format as follows: a. Press the MODULE button to display the AVG7 main menu. b. Press the FORMAT button to select 525 GBR, and then press the ENTER button. c. Press the COLOR BAR button. 8.
  • Page 443 Adjustment Procedures Figure 5-9: Adjusting the signal amplitudes 13. Adjust R835A so that the signal amplitudes from 500 kHz to 5 MHz are at the same level. See Figure 5–9. 14. Readjust C835A and R835A so that the differences of the signal amplitudes from 500 kHz to 5 MHz are within 2 mV.
  • Page 444 Preparation To perform the interchannel adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable capacitors on the AVG7 circuit board.
  • Page 445 BLACK 1 connector on the test signal generator to the CH 3 input connector on the oscilloscope as shown in Figure 5–11. Oscilloscope (TDS784D) Test signal generator (ATG7) AVG7 module TG700 mainframe rear panel 75 W signal adapter 75 W feed through termination 75 W BNC cable: 72 inches...
  • Page 446 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 8. Select the DAC Test calibration signal as follows: a.
  • Page 447 Adjustment Procedures 15. Using the most delayed signal as a reference, adjust the following variable capacitors so that the other signals are delayed within 0.5 ns from the most delayed signal: CH 1 output: C837A CH 2 output: C737A CH 3 output: C637A Frequency Response Confirmation After you have performed the group delay adjustment, be sure to check that the frequency response meets the specifications.
  • Page 448 Adjustment Procedures 5-20 AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 449: Maintenance

    Maintenance www.valuetronics.com...
  • Page 450 www.valuetronics.com...

  • Page 451: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 452 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. To avoid semiconductor component damage, do not handle static sensitive parts without taking proper ESD precautions.

  • Page 453: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 454 Maintenance a. Obtain a corrugated cardboard carton with inside dimensions six or more inches greater than the dimensions of the instrument. Use a shipping carton that has a test strength of at least 250 pounds (113.5 kg). b. Surround the module with a protective (anti-static) bag. c.

  • Page 455: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the AVG7 Generator module from the mainframe. 2. Disconnect the cables at J830A (upper CH 1), J830B (lower CH 1), J730A (upper CH 2), J730B (lower CH 2), J630A (upper CH 3), and J630B (lower CH 3) on the AVG7 circuit board.
  • Page 456 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the five screws securing the AVG7 circuit board to the chassis.

  • Page 457: Troubleshooting

    Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 458: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 as follows: 1. Connect the power cable to the instrument. 2. Wait until the mainframe and the module completely initialize. Check that no error messages appear on the display. 3. Press the front panel MODULE button.
  • Page 459 Troubleshooting Power off and remove the module, then Is the module install it into a TG700 mainframe that is operating correctly? functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 460 Troubleshooting 6-10 AVG7 Analog Video Generator Service Manual www.valuetronics.com...
  • Page 461 Option www.valuetronics.com...
  • Page 462 www.valuetronics.com...
  • Page 463 Option This section describes the option that is available for the AVG7 Generator module. The following option is available: H Option D1 (Test data report) Option D1 Description A calibration data test result report comes with the AVG7 Generator module when you specify this option.
  • Page 464 Option AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 465: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 466 www.valuetronics.com...
  • Page 467 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Parts List. Since component-level repair is not supported, individual electrical components are not listed. AVG7 Analog Video Generator Service Manual www.valuetronics.com...
  • Page 468 Replaceable Electrical Parts AVG7 Analog Video Generator Service Manual www.valuetronics.com...
  • Page 469 Diagram www.valuetronics.com...
  • Page 470 www.valuetronics.com...
  • Page 471 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the AVG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 472 Diagram AVG7 Analog Video Generator Service Manual www.valuetronics.com...

  • Page 473: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 474 www.valuetronics.com...

  • Page 475: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 476: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustration that follows. 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 477 SHLD GASKET,ELEK:FINGER TYPE,5.1MM LX6.4MM 80009 W,BE-CU [97-645-02] 174-B851-00 CABLE ASSY,RF:75OHM COAX(RG179),5.5CM L,BNC TO 80009 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS TK0191 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R) TK0191 OPTIONAL ACCESSORIES 070-A800-XX...
  • Page 478 Mechanical Parts List Figure 10-1: AVG7 Generator module exploded view 10-4 AVG7 Analog Video Generator Service Manual www.valuetronics.com...
  • Page 479 www.valuetronics.com...
  • Page 480 www.valuetronics.com...
  • Page 481 Service Manual AWVG7 Analog Wideband Video Generator www.valuetronics.com...
  • Page 482 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 483 ..........Contacting Tektronix .
  • Page 484 Table of Contents Maintenance Preparation ............6–1 Inspection and Cleaning .
  • Page 485 Table of Contents List of Figures Figure 2–1: Front-panel test signal buttons ..... 2–3 Figure 2–2: AWVG7 module main menu .
  • Page 486 Table of Contents List of Tables Table 1–1: Output channels ....... . . 1–2 Table 1–2: Common output characteristics .

  • Page 487: Manual Structure

    Preface This is the service manual for the AWVG7 Analog Wideband Video Generator module. This manual contains information needed to service an AWVG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 488: Related Manuals

    Related Manuals The following documents are related to the AWVG7 Generator module: H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 489: Specifications

    Specifications www.valuetronics.com...
  • Page 490 www.valuetronics.com...

  • Page 491: Product Description

    Product Description The AWVG7 Analog Wideband Video Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The TG700 platform must be running version 3.0 or later firmware. The module is a 30 MHz bandwidth video signal generator which provides wideband analog component video signals for HDTV system.

  • Page 492: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 through 1–3 list the electrical and environmental characteristics of the AWVG7 Generator module. Table 1-1: Output channels Characteristic Performance requirements Reference information Channel 1 (CH 1) Number of outputs Output signals Y or G Channel 2 (CH 2) Number of outputs Output signals Pb or B...

  • Page 493: Environmental Characteristics

    Specifications Environmental Characteristics Table 1-3: Environmental characteristics Characteristic Description Temperature 0 _C to +50 _C Operating Non operating -20 _C to +60 _C Relative humidity Operating 20% to 80% (No condensation) ; Maximum wet bulb temperature 29.4 _C Non operating 5% to 90% (No condensation) ;...
  • Page 494 Specifications AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...

  • Page 495: Operating Information

    Operating Information www.valuetronics.com...
  • Page 496 www.valuetronics.com...

  • Page 497: Operating Procedure

    3. Following the initialization process the mainframe main menu appears, as shown below. TG700 : PRESET 4. Press the front-panel MODULE button until the AWVG7 module main menu appears, as shown below. AWVG7 [x] : STATUS : 1080 59i YPbPr 100% Color Bars 5.
  • Page 498 Operating Instructions 6. Press the front-panel arrow buttons to select the desired main menu item or submenu item. Refer to AWVG7 Module Main Menu beginning on page 2–4 for detailed information about the main menu items and the submenu items. Selecting an Output Signal When you output a signal from the AWVG7 Generator module, you need to select a signal format and output signal.
  • Page 499 Operating Instructions Selecting a Signal All signal sets available in the module are already assigned to the corresponding test signal buttons (see Figure 2–1). When you press any of the buttons, one of the signals in the signal set is output. For example, when you press the COLOR BAR test signal button, you can output the 100% Color Bars signal in the Color Bars signal set.

  • Page 500: Awvg7 Module Main Menu

    Operating Instructions With the AWVG7, you can download a frame picture file created by Frame Picture Generator to the TG700 Option FP and output the picture. Refer to TG700 TV Signal Generator Platform User Manual for detailed information on how to create, download, and output a frame picture.
  • Page 501 Operating Instructions MOVING PICTURE This menu allows you to scroll the active picture area of the output signal Submenu up/down or left/right (or randomly). Use the up ( ) or down ( ) arrow button to scroll the menu. Figure 2–3 shows the MOVING PICTURE submenu. Select MOVING PICTURE in the main menu AWVG7 [x] : MOVING PICTURE...
  • Page 502 Operating Instructions OVERLAY Submenu This menu allows you to select an item (logo, ID Text, or circle) to overlay on the output test signal, and to set the blinking mode for the overlay. Use the up ) or down ( ) arrow button to scroll through the menu.
  • Page 503 Operating Instructions LOGO Submenu This menu allows you to select a logo to overlay on the output test signal, and to set the display position of the logo. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 504 Operating Instructions ID TEXT Submenu This menu allows you to edit text that is overlaid on the output test signal, and to set the display position of the text. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 505 Operating Instructions CIRCLE Submenu This menu allows you to create a circle overlaid on the output test signal and set its position on the display. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–7 shows the CIRCLE submenu. Select CiIRCLE in the OVERLAY submenu AWVG7 [x] : OVERLAY : CIRCLE...
  • Page 506 Operating Instructions TIMING Submenu This menu allows you to adjust the timing offset of the output signals relative to the internal reference signal (frame reset signal). Use the up ( ) or down ( arrow button to change the menu items. Figure 2–8 shows the TIMING submenu.
  • Page 507 Operating Instructions VIDEO Submenu This menu allows you to enable or disable the signal output from CH 1, CH 2, and CH 3 connectors and to set whether or not a sync signal is multiplexed with the B and R signal when a GBR signal is being output. Use the up ( ) or down ) arrow button to scroll through the menu.
  • Page 508 Operating Instructions 2-12 AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...

  • Page 509: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 510 www.valuetronics.com...
  • Page 511 Basic Operation Description This section describes the basic operation of the major circuit blocks in the AWVG7 Generator module. For information about the TG700 mainframe, refer to the TG700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 512 Theory of Operation Interface D/A Converter Line Memory & Amp for Y/G D/A Converter Line Memory Address Overlay Pb/B & Amp for Pb/B Generator Controller Line Memory D/A Converter Pr/R for Pr/R & Amp Frame Overlay Memory Memory Figure 3-1: Simplified block diagram of the AWVG7 Generator module AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...

  • Page 513: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 514 www.valuetronics.com...

  • Page 515: Equipment Required

    Bandwidth: 1 GHz or higher Tektronix TDS784D Digital multimeter 5 1/2 digits FLUKE 8842A Peak detector amplifier Tektronix part number 015 0408 00 and TM500 series power supply Peak detector head Tektronix part number 015 0413 00 Color picture monitor SONY BVMD14H5J and BKM129X...

  • Page 516: Calibration Data Report

    Table 4-1: Equipment required for performance verification (Cont.) Item Minimum requirement Recommended equipment BNC T connector Tektronix part number 103 0030 00 BNC female to dual banana Tektronix part number 103 0090 00 adapter Calibration Data Report Photocopy this form and use it to record the performance test results.
  • Page 517 Performance Verification Table 4-2: AWVG7 calibration data report (Cont.) Step Function Tested Minimum Cal Data Maximum Frequency Response (Measured on DAC Test Signal) CH 1 Output (Peak value to 20 MHz) -7.0 mV 7.0 mV CH 1 Output (Peak value to 28 MHz) -14.0 mV 14.0 mV CH 1 Output (Peak value to 30 MHz)

  • Page 518: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. DC Offset and Amplitude This test verifies the DC offset and amplitude error of the channel outputs. The...
  • Page 519 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 3. Select the DAC Gain (GBR) : 0 mV calibration signal as follows: a.
  • Page 520 Performance Verification 15. Verify that CH2_DC1–CH2_DC0 is within the range of 693.0 mV to 707.0 mV. Note this value as CH2_V1. 16. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AWVG7 Generator module. 17.
  • Page 521 2. Use the 75 W BNC cable to connect the OUTPUT connector on the peak detector amplifier to the CH 1 input connector on the oscilloscope as shown in Figure 4–2. Oscilloscope (TDS784D) AWVG7 module TG700 mainframe rear panel Peak detector head Peak detector amplifier (installed in the TM500...
  • Page 522 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 5. Select the DAC Test calibration signal as follows: a.
  • Page 523 Performance Verification 9. Verify that the differences between the maximum amplitude and the minimum amplitude from 500 kHz to 30 MHz are less than or equal to 21 mV. See Figure 4–3. 10. Move the peak detector head from the upper CH 1 connector to the upper CH 2 connector on the AWVG7 Generator module and repeat steps 7 through 9.
  • Page 524 Performance Verification Oscilloscope (TDS784D) Test signal generator (ATG7) AWVG7 module TG700 mainframe rear panel 75 W signal adapter 75 W feed through termination 75 W BNC cable 75 W BNC cable Figure 4-4: Equipment connection for verifying the field time distortion 3.
  • Page 525 Performance Verification 6. Place one of the vertical cursor on the portion after 4 ms of the rising edge of the line bar signal, and place the other vertical cursor on the portion before 4 ms of the falling edge of the line bar signal. 7.
  • Page 526 Performance Verification 2. Set the oscilloscope settings as indicated below: Vertical scale ..CH 1: 5 mV/div, CH 2: 1.00 V/div Vertical offset ..700 mV Horizontal scale .
  • Page 527 /B IN 75 W coaxial termination /R IN 75 W BNC cable 75 W BNC cable TG700 mainframe rear panel AWVG7 module Figure 4-5: Equipment connection for checking the color bars signal 4-13 AWVG7 Analog Wideband Video Generator Service Manual...
  • Page 528 CH 3 connector to lower CH 3 connector on the AWVG7 Generator module and repeat step 8. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. 4-14 AWVG7 Analog Wideband Video Generator Service Manual...

  • Page 529: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 530 www.valuetronics.com...

  • Page 531: Requirements For Adjustment

    Access When adjusting the AWVG7 Generator module, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. Equipment Required Table 5–1 lists the equipment required to adjust the output offset and gain,...
  • Page 532 Preparation To perform the output offset and gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the AWVG7 circuit board.
  • Page 533 Procedure WARNING. To avoid serious injury, do not touch exposed connectors or compo- nents when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 W BNC cable, BNC T connector, 75 W coaxial termination, and...
  • Page 534 Adjustment Procedures 6. Move the BNC cable from the upper CH 1 connector to the upper CH 2 connector on the AWVG7 Generator module. 7. Locate variable resistor R756A on the AWVG7 circuit board. See Figure 5–1. 8. Adjust R756A so that the output offset is 0 V"1 mV. 9.
  • Page 535 To perform the frame timing and clock timing adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the test points on the AWVG7 circuit board.
  • Page 536 Procedure WARNING. To avoid serious injury, do not touch exposed connectors or compo- nents when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Attach the two P6139A probes to the oscilloscope CH 1 and CH 2 inputs.
  • Page 537 Adjustment Procedures 10. Press the up ( ) or down ( ) arrow button to select 2.0 ns. 11. While seeing the Delay Timing value on the oscilloscope, press the left ( or right ( " ) arrow button to adjust the delay value to 2.0 ns. 12.
  • Page 538 Preparation To perform the frequency response adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable capacitors on the AWVG7 circuit board.
  • Page 539 MODULE and FORMAT buttons to re-start the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the “TG700 start up with Factory Mode.” message appears. 5. Select the DAC Test calibration signal as follows: a.
  • Page 540 Adjustment Procedures c. Press the left ( ) or right ( " ) arrow button to select DAC Test, and then press the ENTER button. d. Press the ENTER button again to confirm the signal output. 6. Locate variable capacitors C804B, C704B, and C604B on the AWVG7 circuit board.

  • Page 541: Maintenance

    Maintenance www.valuetronics.com...
  • Page 542 www.valuetronics.com...

  • Page 543: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 544 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. To avoid semiconductor component damage, do not handle static sensitive parts without taking proper ESD precautions.

  • Page 545: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 546 Maintenance a. Obtain a corrugated cardboard carton with inside dimensions six or more inches greater than the dimensions of the instrument. Use a shipping carton that has a test strength of at least 250 pounds (113.5 kg). b. Surround the module with a protective (anti-static) bag. c.

  • Page 547: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the AWVG7 Generator module from the mainframe. 2. Disconnect the cables at J830A (upper CH 1), J830B (lower CH 1), J730A (upper CH 2), J730B (lower CH 2), J630A (upper CH 3), and J630B (lower CH 3) on the AWVG7 circuit board.
  • Page 548 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the five screws securing the AWVG7 circuit board to the chassis.

  • Page 549: Troubleshooting

    AWVG7 Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 550: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 as follows: 1. Connect the power cable to the instrument. 2. Wait until the mainframe and the module completely initialize. Check that no error messages appear on the display. 3. Press the front panel MODULE button.
  • Page 551 Troubleshooting Power off and remove the module, then Is the module install it into a TG700 mainframe that is operating correctly? functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 552 Troubleshooting 6-10 AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...
  • Page 553 Option www.valuetronics.com...
  • Page 554 www.valuetronics.com...
  • Page 555 Option This section describes the option that is available for the AWVG7 Generator module. The following option is available: H Option D1 (Test data report) Option D1 Description A calibration data test result report comes with the AWVG7 Generator module when you specify this option.
  • Page 556 Option AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...

  • Page 557: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 558 www.valuetronics.com...
  • Page 559 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Parts List. Since component-level repair is not supported, individual electrical components are not listed. AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...
  • Page 560 Replaceable Electrical Parts AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...
  • Page 561 Diagram www.valuetronics.com...
  • Page 562 www.valuetronics.com...
  • Page 563 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the AWVG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 564 Diagram AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...

  • Page 565: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 566 www.valuetronics.com...

  • Page 567: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 568: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 569 SHLD GASKET,ELEK:FINGER TYPE,5.1MM LX6.4MM 80009 W,BE-CU [97-645-02] 174-B851-00 CABLE ASSY,RF:75OHM COAX(RG179),5.5CM L,BNC TO 80009 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS TK0191 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R) TK0191 OPTIONAL ACCESSORIES 070-A800-XX...
  • Page 570 Mechanical Parts List Figure 10-1: AWVG7 Generator module exploded view 10-4 AWVG7 Analog Wideband Video Generator Service Manual www.valuetronics.com...
  • Page 571 www.valuetronics.com...
  • Page 572 www.valuetronics.com...
  • Page 573 Service Manual Black Generator www.valuetronics.com...
  • Page 574 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 575 ..........Contacting Tektronix .
  • Page 576 Table of Contents Maintenance Maintenance ..........6–1 Preparation .
  • Page 577 Table of Contents List of Figures Figure 2–1: BG7 module main menu ......2–2 Figure 2–2: SELECT FORMAT submenu .
  • Page 578 Table of Contents BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 579: Manual Structure

    Preface This is the service manual for the BG7 Generator module. This manual contains information needed to service an BG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 580: Related Manuals

    Related Manuals The following documents are related to the BG7 Generator module. H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 581: Specifications

    Specifications www.valuetronics.com...
  • Page 582 www.valuetronics.com...

  • Page 583: Product Description

    This section contains a general product description of the BG7 Generator module followed by the operating specifications of the module. Product Description The BG7 Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The module is a multi format black generator with the following features:...

  • Page 584: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 and 1–2 list the electrical characteristics of the BG7 Generator module. Table 1-1: Black burst and HDTV trilevel sync outputs Characteristic Performance requirements Reference information Connector Number of outputs BLACK1, BLACK2, BLACK3, and BLACK4 Output impedance, typical 75 W Return loss To 30 MHz...

  • Page 585: Environmental Characteristics

    Specifications Table 1-2: Color bars and black burst with field ID outputs (option CB) Characteristic Performance requirements Reference information Color bars signals NTSC 100 % Color Bars, 75 % Color Bars, SMPTE Color Bars, 40 % Flat Field, SNG Color Bar, Monitor Setup Matrix NTSC No Setup 100 % Color Bars, 75 % Color Bars, SMPTE...
  • Page 586 Specifications BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 587: Operating Information

    Operating Information www.valuetronics.com...
  • Page 588 www.valuetronics.com...

  • Page 589: Operating Procedure

    Check that there are no error messages on the display. 3. The first menu item of the mainframe main menu, shown below, appears on the display after initialization is complete. TG700 : PRESET 4. Press the front-panel MODULE button until the BG7 module main menu shown below appears.
  • Page 590 Operating Instructions BG7 Module Main Menu In the BG7 module main menu, there is one menu item to select the output whose parameters are to be changed. Figure 2–1 shows the BG7 module main menu. Selection by the MODULE button BLACK 1 ENTER BG7 [x] : SELECT OUTPUT...
  • Page 591 Operating Instructions SELECT SIGNAL This menu allows you to select black signal output from the selected BLACK Submenu output. Figure 2–3 shows the SELECT SIGNAL submenu. HD SYNC : NTSC and PAL : 1080 60i BG7 [x] : BLACK 1 : NTSC NTSC No Setup : Black Burst 1080 59.94i...
  • Page 592 Operating Instructions BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 593: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 594 www.valuetronics.com...
  • Page 595 Theory of Operation This section describes the basic operation of the major circuit blocks in the BG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 596 Theory of Operation BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 597: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 598 www.valuetronics.com...

  • Page 599: Equipment Required

    Bandwidth: 200 MHz or higher Tektronix TDS540D Video measurement set Tektronix VM700T Option 01/11 Length: 42 inches Tektronix part no. 012 0074 00 75 W BNC cable Tektronix part no. 011 0103 02 75 W feed through terminator Tektronix part no. 011 0102 01...

  • Page 600: Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: BG7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum Black Output (NTSC) Blanking Level BLACK 1 -50 mV +50 mV...
  • Page 601 Performance Verification Table 4-2: BG7 calibration data report (Cont.) Step Function Tested Minimum Cal Data Maximum Sync Amplitude minus BLACK 1 294.0 mV 306.0 mV BLACK 2 294.0 mV 306.0 mV BLACK 3 294.0 mV 306.0 mV BLACK 4 294.0 mV 306.0 mV Option CB Luminance Gain (Measured on PAL 75% Colour Bars Over Red signal)

  • Page 602: Performance Verification Procedures

    75 W BNC cable Figure 4-1: Equipment connection for verifying the trilevel sync outputs 2. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Press the up ( ) or down ( ) arrow button to select RECALL.
  • Page 603 Performance Verification c. Press the left ( ) or right ( " ) arrow button to select Factory Default. d. Press the ENTER button to recall the factory default settings. 3. Select the 1080 59.94i HD sync signal for BLACK 1 to BLACK 4 as follows: a.
  • Page 604 Performance Verification 12. Change the BNC cable connection from BLACK 1 connector to the BLACK 2 connector on the BG7 Generator module and repeat steps 5 through 11. 13. Change the BNC cable connection from BLACK 2 connector to the BLACK 3 connector on the BG7 Generator module and repeat steps 5 through 11.
  • Page 605 Performance Verification 3. Set the oscilloscope settings as indicated below: Vertical ... . . 50 mV/div Vertical offset ..Horizontal ... 1 ms/div Horizontal position .
  • Page 606 Performance Verification 75 W BNC cable 75 W coax terminator TG700 mainframe rear panel Video measurement set rear panel (VM700T Option 01/11) BG7 module Figure 4-2: Equipment connection for verifying burst and sync amplitude 12. Touch the Mode soft key to set the instrument to Analog mode, and then touch the H_Timing soft key.
  • Page 607 30. Change the BNC cable connection from BLACK 3 connector to the BLACK 4 connector on the BG7 Generator module and repeat steps 28 and 29. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. BG7 Black Generator Service Manual www.valuetronics.com...
  • Page 608 Performance Verification 4-10 BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 609: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 610 www.valuetronics.com...

  • Page 611: Requirements For Adjustment

    When adjusting the blanking, luminance, and chrominance levels, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. Equipment Required Table 5–1 lists the equipment required to adjust the output offset, output gain,...
  • Page 612 Preparation To perform the output offset and gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the BG7 circuit board.
  • Page 613 Adjustment Procedures 75 W BNC cable Digital multimeter TG700 mainframe BNC T connector rear panel BNC female to dual banana adapter BG7 module 75 W coax terminator Figure 5-2: Equipment connection for adjusting the output offset and gain 2. Press the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously, and then release the MODULE and FORMAT buttons to re-start the instrument in Factory mode.
  • Page 614 Adjustment Procedures 11. Adjust R691 so that the output offset is 0 V"1 mV. 12. Change the BNC cable connection from the BLACK 3 connector to the BLACK 4 connector on the BG7 Generator module. 13. Locate variable resistor R791 on the BG7 circuit board. See Figure 5–1. 14.
  • Page 615 Preparation To perform the luminance gain adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the BG7 circuit board.
  • Page 616 Adjustment Procedures 3. Select the 75% Colour Bars signal for BLACK 3 and BLACK 4 as follows: a. Press the MODULE button to display the BG7 main menu. b. Press the left ( ) or right ( " ) arrow button to select BLACK 3, and then press the ENTER button.

  • Page 617: Maintenance

    Maintenance www.valuetronics.com...
  • Page 618 www.valuetronics.com...

  • Page 619: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 620 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.

  • Page 621: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 622 Maintenance c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.

  • Page 623: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the BG7 Generator module from the mainframe. 2. Disconnect the cables at P830 (BLACK 1), J880 (BLACK 2), J930 (BLACK 3) and J980 (BLACK 4) on the BG7 circuit board.
  • Page 624 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the six screws securing the BG7 circuit board to the chassis.

  • Page 625: Troubleshooting

    Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 626: Troubleshooting Trees

    Troubleshooting Trees Start Power on the TG700 as follows: For Option CB Power on the TG700 in factory mode and execute 1. Connect the power cable to the instrument. diagnostics as follows: 2. Wait until the mainframe and the module completely initialize.
  • Page 627 Troubleshooting Power off and remove the module, and Is the module then install it into the TG700 mainframe operating correctly? that is functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 628 Troubleshooting 6-10 BG7 Black Generator Service Manual www.valuetronics.com...
  • Page 629 Options www.valuetronics.com...
  • Page 630 www.valuetronics.com...
  • Page 631 Options This section describes options that are available for the BG7 Generator module. The following options are available. H Option CB (Adds NTSC/PAL Color Bars ) H Option D1 (Test data report) Option CB Description Option CB adds 10 field ID and NTSC/PAL color bar signals to the standard black burst signal.
  • Page 632 Options BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 633: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 634 www.valuetronics.com...
  • Page 635 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. BG7 Black Generator Service Manual www.valuetronics.com...
  • Page 636 Replaceable Electrical Parts BG7 Black Generator Service Manual www.valuetronics.com...
  • Page 637 Diagram www.valuetronics.com...
  • Page 638 www.valuetronics.com...
  • Page 639 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the BG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 640 Diagram BG7 Black Generator Service Manual www.valuetronics.com...

  • Page 641: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 642 www.valuetronics.com...

  • Page 643: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 644: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 645 SHLD GASKET,ELEK:FINGER TYPE,5.1MM LX6.4MM 80009 W,BE-CU [97-645-02] 174-B851-00 CABLE ASSY,RF:75OHM COAX(RG179),5.5CM L,BNC TO 80009 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU&LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS TK0191 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R) TK0191 OPTIONAL ACCESSORIES 070-A800-XX...
  • Page 646 Mechanical Parts List Figure 10-1: BG7 Generator module exploded view 10-4 BG7 Black Generator Service Manual www.valuetronics.com...
  • Page 647 www.valuetronics.com...
  • Page 648 www.valuetronics.com...
  • Page 649 Service Manual DVG7 Digital Video Generator www.valuetronics.com...
  • Page 650 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 651 ..........Contacting Tektronix .
  • Page 652 Table of Contents Maintenance Maintenance ..........6–1 Preparation .
  • Page 653 Table of Contents List of Figures Figure 2–1: DVG7 module main menu ......2–4 Figure 2–2: MOVING PICTURE submenu .
  • Page 654 Table of Contents DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 655: Manual Structure

    Preface This is the service manual for the DVG7 Digital Video Generator module. This manual contains information needed to service an DVG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.

  • Page 656: Related Manuals

    Related Manuals The following documents are related to the DVG7 Generator module. H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 657: Specifications

    Specifications www.valuetronics.com...
  • Page 658 www.valuetronics.com...

  • Page 659: Product Description

    This section contains a general product description of the DVG7 Generator module followed by the operating specifications of the module. Product Description The DVG7 Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The module is a digital video generator which provides NTSC composite digital signals and 525/625 component digital signals.

  • Page 660: Electrical Characteristics

    Specifications Electrical Characteristics Tables 1–1 through 1–3 list the electrical characteristics of the DVG7 Generator module. Table 1-1: Serial digital video signal outputs Characteristic Performance requirements Reference information Connector Number of output SIGNAL 1 and SIGNAL 2 Bit Rate 143 Mbps 270 Mbps Signal amplitude, typical 800 mV"10 %...

  • Page 661: Environmental Characteristics

    Specifications Table 1-3: Embedded audio Characteristic Performance requirements Reference information Number of channels 16 channels in 4 groups; 8 AES/EBU audio pairs Audio tones Frequency Silence to 20 kHz; 31 discrete settings Level -60 to 0 dBFS in 1 dB steps Pre emphasis Emphasis status bits can be inserted.
  • Page 662 Specifications DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 663: Operating Information

    Operating Information www.valuetronics.com...
  • Page 664 www.valuetronics.com...

  • Page 665: Operating Procedure

    Check that no error messages appear on the display. 3. The top menu item of the mainframe main menu shown below appears on the display after initialization is complete. TG700 : PRESET 4. Press the front-panel MODULE button until the DVG7 module main menu appears, as shown below.
  • Page 666 Operating Instructions 6. Press the front-panel arrow buttons to select the desired main menu item or submenu item. Refer to DVG7 Module Main Menu, beginning on Page 2–4, for detailed information about the main menu items and the submenu items. Selecting an Output Signal When you output a signal from the DVG7 Generator module, you need to select a signal format and output signal.
  • Page 667 Operating Instructions Selecting a Signal All signal sets available in the module are already assigned to the corresponding test signal buttons. When you press any of the buttons, one of the signals in the signal set is output. For example, when you press the COLOR BAR test signal button, you can output the 100% Color Bars signal in the Color Bars signal set.

  • Page 668: Dvg7 Module Main Menu

    Operating Instructions DVG7 Module Main Menu You can set the logo, circle, and text overlay, embedded audio, and timing offset of the serial digital signal outputs using the DVG7 module main menu. Use the up ( ) or down ( ) arrow button to scroll through the main menu.
  • Page 669 Operating Instructions MOVING PICTURE This menu allows you to scroll the active picture area of the serial digital video Submenu signal up/down or left/right (or randomly). Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–2 shows the MOVING PICTURE submenu.
  • Page 670 Operating Instructions LOGO OVERLAY This menu allows you to select a logo to overlay on the output test signal, and to Submenu set the display position of the logo. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 671 Set the vertical position Y Position : 0.0 % APH DVG7 [x] : OVERLAY : TEXT : EDIT Edit text SONY/TEKTRONIX ENTER DVG7 [x] : OVERLAY : TEXT : SAVE Save the text to the signal file Figure 2-4: TEXT OVERLAY submenu DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 672 Operating Instructions CIRCLE OVERLAY This menu allows you to create a circle overlaid on the output test signal and set Submenu its position on the display. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–5 shows the CIRCLE OVERLAY submenu. Select Circle in the OVERLAY main menu DVG7 [x] : OVERLAY : CIRCLE...
  • Page 673 Operating Instructions AUDIO GROUP Submenu This menu allows you to enable or disable embedded audio of the selected audio group, select which audio channel to enable, and set the emphasis status bits, sampling alignment status bits, and sample bits of the selected audio group. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 674 Operating Instructions AUDIO CHANNEL This menu allows you to set the frequency, amplitude, and audio click of the Submenu embedded audio signal for the selected audio channel. Use the up ( ) or down ) arrow button to scroll through the menu. Figure 2–7 shows the AUDIO CHANNEL submenu.
  • Page 675 Operating Instructions VIDEO Submenu This menu allows you to turn the Y, Pb, or Pr component of the serial digital video signals and the insertion of the EDH (Error Detection and Handling) on or off individually. You can also set the resolution of the serial digital video signals. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 676 Operating Instructions BLACK Submenu This menu allows you to set the output parameters of the serial digital black (Option BK Only) signals output from the BLACK1 and BLACK 2 connectors. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–10 shows the BLACK submenu.

  • Page 677: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 678 www.valuetronics.com...
  • Page 679 Theory of Operation This section describes the basic operation of the major circuit blocks in the DVG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 680 Theory of Operation Frame Memory Address Overlay SIGNAL 1 Formatter Generator Controller Interface Serializer SIGNAL 2 LIne Audio Overlay Memory Memory Memory Black BLACK 1 Formatter Generator Serializer BLACK 2 Audio Memory Option BK only Figure 3-1: Simplified block diagram of the DVG7 Generator module DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 681: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 682 www.valuetronics.com...

  • Page 683: Equipment Required

    Minimum requirement Recommended equipment Video measurement set Tektronix VM700T Option 01/11/1S Length: 42 inches Tektronix part no. 012 0074 00 75 W BNC cable Tektronix part no. 011 0102 01 75 W coax terminator DVG7 Digital Video Generator Service Manual...

  • Page 684: Calibration Data Report

    Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: DVG7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum Serial Output Amplitude SIGNAL 1 720 mV 880 mV SIGNAL 2...

  • Page 685: Performance Verification Procedures

    Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Serial Digital Outputs This test verifies that serial digital signals are output correctly from the SIGNAL 1 and SIGNAL 2 connectors.
  • Page 686 Performance Verification 3. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Press the up ( ) or down ( ) arrow button to select RECALL. c. Press the left ( ) or right ( "...
  • Page 687 Performance Verification 11. Press the Picture button to set the video measurement set to SDI Picture application. 12. Verify that the correct color bar and overlay circle are displayed on the SDI Picture display. 13. Press the Measure button on the video measurement set to open the Measure mode display.
  • Page 688 Performance Verification d. Press the left ( ) or right ( " ) arrow button to select Group 1, and then press the ENTER button to access the AUDIO GROUP submenu. e. Press the left ( ) or right ( "...
  • Page 689 11. Change the BNC cable connection from the BLACK 1 connector to the BLACK 2 connector on the DVG7 Generator module. 12. Repeat step 6. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 690 Performance Verification DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 691: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 692 www.valuetronics.com...

  • Page 693: Requirements For Adjustment

    Access When adjusting the output level, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual.

  • Page 694: Output Level Adjustment

    Preparation To perform the output level adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the DVG7 circuit board.
  • Page 695 ) arrow button to select Factory Default. c. Press the ENTER button to recall the factory default settings. d. Press the CANCEL button to return the TG700 main menu. 5. Select the 75 % Color Bars signal as follows: a. Press the MODULE button to display the DVG7 main menu.
  • Page 696 Adjustment Procedures 9. Adjust R507 so that the signal amplitude is equal to the height between the two cursors set in step 6. BLACK Output Level Adjustment (Option BK Only). 10. Move the BNC cable from the SIGNAL 1 connector to the BLACK 1 connector and move the 75 W terminator from the SIGNAL 2 connector to the BLACK 2 connector on the DVG7 Generator module.

  • Page 697: Maintenance

    Maintenance www.valuetronics.com...
  • Page 698 www.valuetronics.com...

  • Page 699: H Troubleshooting

    If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 700 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.

  • Page 701: Inspection And Cleaning

    Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 702 Maintenance c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.

  • Page 703: Removal And Replacement

    Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the DVG7 Generator module from the mainframe. 2. Disconnect the cables at P500 (SIGNAL 1) and P502 (SIGNAL 2) on the DVG7 circuit board.
  • Page 704 Removal and Replacement Replacing the chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Use a screwdriver with a #2 Phillips tip to remove the six screws securing the DVG7 circuit board to the chassis.

  • Page 705: Troubleshooting

    Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.

  • Page 706: Troubleshooting Trees

    Troubleshooting Troubleshooting Trees Start Power on the TG700 in factory mode and execute diagnostics as follows: 1. Connect the power cable to the instrument with the FRONT PANEL ENABLE button pressed. 2. Press the up and down arrow button to select UTILITY, and then press the ENTER button.
  • Page 707 Troubleshooting Power off and remove the module, and Is the module then install it into the TG700 mainframe operating correctly? that is functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 708 Troubleshooting 6-10 DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 709 Options www.valuetronics.com...
  • Page 710 www.valuetronics.com...
  • Page 711 Options This section describes options that are available for the DVG7 Generator module. The following options are available: H Option BK (Serial digital black output ) H Option D1 (Test data report) Option BK Description Two serial digital black signal outputs are added to the DVG7 Generator module when this option is specified.
  • Page 712 Options DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 713: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 714 www.valuetronics.com...
  • Page 715 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 716 Replaceable Electrical Parts DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 717 Diagram www.valuetronics.com...
  • Page 718 www.valuetronics.com...
  • Page 719 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the DVG7 Generator module is located in the Theory of Operation section, beginning on Page 3–1.
  • Page 720 Diagram DVG7 Digital Video Generator Service Manual www.valuetronics.com...

  • Page 721: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 722 www.valuetronics.com...

  • Page 723: Parts Ordering Information

    For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.

  • Page 724: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 725 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU & LOCK WASHER 211-A245-00 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU & LOCK WASHER (OPTION BK) 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 STANDARD ACCESSORIES 070-A824-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS TK0191 062-A249-XX SOFTWARE PACKAGE:S/W(CD-R) TK0191 OPTIONAL ACCESSORIES...
  • Page 726 Mechanical Parts List Figure 10-1: DVG7 Generator module exploded view 10-4 DVG7 Digital Video Generator Service Manual www.valuetronics.com...
  • Page 727 www.valuetronics.com...
  • Page 728 www.valuetronics.com...
  • Page 729 Service Manual HDVG7 HDTV Digital Video Generator www.valuetronics.com...
  • Page 730 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 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 731 ..........Contacting Tektronix .
  • Page 732 Table of Contents Maintenance Maintenance ..........6–1 Preparation .
  • Page 733 Table of Contents List of Figures Figure 2–1: HDVG7 module main menu ..... . . 2–3 Figure 2–2: MOVING PICTURE submenu .
  • Page 734 Table of Contents List of Tables Table 1–1: Serial digital video signal outputs ....1–2 Table 1–2: Serial digital black signal outputs (Option BK only) .
  • Page 735 Preface This is the service manual for the HDVG7 HDTV Digital Video Generator module. This manual contains information needed to service an HDVG7 Generator module to the module level. Manual Structure This manual is divided into sections, such as Specifications and Theory of Operation.
  • Page 736 Related Manuals The following documents are related to the HDVG7 Generator module. H The TG700 TV Signal Generator Platform User Manual (Tektronix part number 070-A799-XX) describes how to use the TG700 mainframe and all modules. It also contains information about remote commands and program- ming structure for the TG700 mainframe and all modules.

  • Page 737: Specifications

    Specifications www.valuetronics.com...
  • Page 738 www.valuetronics.com...
  • Page 739 Product Description The HDVG7 Generator module is designed to be installed in the TG700 TV Signal Generator Platform. The module is an HDTV test signal generator that provides 1.485 Gb/s serial digital video signals in various formats.
  • Page 740 Specifications Electrical Characteristics Tables 1–1 through 1–3 list the electrical characteristics of the HDVG7 Generator module. Table 1-1: Serial digital video signal outputs Characteristic Performance requirements Reference information Connector Number of outputs SIGNAL 1 and SIGNAL 2 Bit Rate 1.485 Gbps 1.485/1.001 Gbps Signal amplitude, typical 800 mV...
  • Page 741 Specifications Table 1-3: Embedded audio Characteristic Performance requirements Reference information Number of channels 16 channels in 4 groups; 8 AES/EBU audio pairs Audio tones Frequency Silence to 20 kHz; 31 discrete settings Level -60 to 0 dBFS in 1 dB steps Pre emphasis Emphasis status bits can be inserted.
  • Page 742 Specifications HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
  • Page 743 Operating Information www.valuetronics.com...
  • Page 744 www.valuetronics.com...
  • Page 745 3. The top menu item of the mainframe main menu shown below appears on the display after initializating completely. TG700 : PRESET 4. Press the front-panel MODULE button until the HDVG7 generator module main menu appears, as shown below.
  • Page 746 Operating Instructions 6. Press the front-panel arrow buttons to select the desired main menu item or submenu. Refer to HDVG7 Module Main Menu beginning on page 2–3 for detailed information about the main menu items and the submenu items. Selecting an Output Signal When you output a signal from the HDVG7 Generator module, you need to select a signal format and output signal.

  • Page 747: Hdvg7 Module Main Menu

    Operating Instructions HDVG7 Module Main Menu You can set the logo, circle, and text overlay, embedded audio, timing offset of the serial digital signal outputs using the HDVG7 module main menu. Use the up ( ) or down ( ) arrow button to scroll through the main menu. Figure 2–1 shows the HDVG7 module main menu.
  • Page 748 Operating Instructions MOVING PICTURE This menu allows you to scroll the active picture area of the serial digital video Submenu signal up/down or left/right (or randomly). Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–2 shows the MOVING PICTURE submenu.
  • Page 749 Operating Instructions LOGO OVERLAY This menu allows you to select a logo to overlay on the output test signal, and Submenu set the display position of the logo. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 750 Set the vertical position Y Position : 0.0 % APH HDVG7 [x] : OVERLAY : TEXT : EDIT Edit text SONY/TEKTRONIX ENTER HDVG7 [x] : OVERLAY : TEXT : SAVE Save the text to the signal file Figure 2-4: TEXT OVERLAY submenu HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
  • Page 751 Operating Instructions CIRCLE OVERLAY This menu allows you to create a circle overlaid on the output test signal and set Submenu the display position of the circle. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–5 shows the CIRCLE OVERLAY submenu. Select Circle in the OVERLAY main menu HDVG7 [x] : OVERLAY : CIRCLE...
  • Page 752 Operating Instructions AUDIO GROUP Submenu This menu allows you to enable or disable embedded audio of the selected audio group, select which audio channel to enable, and set the emphasis status bits, sampling alignment status bits, and sample bits of the selected audio group. Use the up ( ) or down ( ) arrow button to scroll through the menu.
  • Page 753 Operating Instructions AUDIO CHANNEL This menu allows you to set the frequency, amplitude, and audio click of the Submenu embedded audio signal for the selected audio channel. Use the up ( ) or down ) arrow button to scroll through the menu. Figure 2–7 shows the AUDIO CHANNEL submenu.
  • Page 754 Operating Instructions VIDEO Submenu This menu allows you to turn the Y, Pb, or Pr component of the serial digital video signals on or off individually. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–9 shows the VIDEO submenu. Select VIDEO in the main menu HDVG7 [x] : VIDEO Y : ON...
  • Page 755 Operating Instructions BLACK Submenu This menu allows you to set the output parameters of the serial digital black (Option BK Only) signals output from the BLACK1 and BLACK 2 connectors. Use the up ( ) or down ( ) arrow button to scroll through the menu. Figure 2–10 shows the BLACK submenu.
  • Page 756 Operating Instructions 2-12 HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...

  • Page 757: Theory Of Operation

    Theory of Operation www.valuetronics.com...
  • Page 758 www.valuetronics.com...
  • Page 759 Theory of Operation This section describes the basic operation of the major circuit blocks in the HDVG7 Generator module. For information about the TG700 mainframe, refer to the TG 700 TV Signal Generator Platform Service Manual. Bus Interface This block provides the communication between the mainframe and the module circuit.
  • Page 760 Theory of Operation Frame Memory Address Overlay SIGNAL 1 Formatter Interface Generator Controller Serializer SIGNAL 2 LIne Audio Overlay Memory Memory Memory Black BLACK 1 Formatter Generator Serializer BLACK 2 Audio Memory Option BK only Figure 3-1: Simplified block diagram of the HDVG7 Generator module HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...

  • Page 761: Performance Verification

    Performance Verification www.valuetronics.com...
  • Page 762 www.valuetronics.com...

  • Page 763: Equipment Required

    Sampling oscilloscope Bandwidth: 6 GHz or higher Tektronix TDS820 Length: 42 inches Tektronix part no. 012 0074 00 75 W BNC cable Tektronix part no. 015 1018 00 50 W BNC to SMA adapter Tektronix part no. 011 0102 01...
  • Page 764 Performance Verification Calibration Data Report Photocopy this form and use it to record the performance test results. Table 4-2: HDVG7 calibration data report Serial Number: Cal Date: Temperature: Humidity: Step Function Tested Minimum Cal Data Maximum Serial Output Amplitude SIGNAL 1 (Typical value: 800 mV) ------------ ------------ SIGNAL 2 (Typical value: 800 mV)
  • Page 765 Performance Verification Procedures Be sure you have performed the Preparation for Performance Verification before proceeding. WARNING. Dangerous electric shock hazards exist inside the TG700 mainframe. Only qualified service personnel should perform these procedures. Serial Digital Outputs This test verifies that serial digital signals are output correctly from the SIGNAL 1 and SIGNAL 2 connectors.
  • Page 766 240M/274M Interlaced/Progressive Interlaced 8. Recall the Factory Default preset as follows: a. Press the MODULE button to display the TG700 main menu. b. Press the up ( ) or down ( ) arrow button to select RECALL. c. Press the left ( ) or right ( "...
  • Page 767 Performance Verification b. Press the COLOR BAR test signal button until the 75 % Color Bars signal is selected. 10. Turn on the circle overlay as follows: a. Press the CANCEL button. b. Press the up ( ) or down ( ) arrow button to select OVERLAY, and then press the ENTER button.
  • Page 768 Performance Verification e. In the view, check CRC errors are not displayed. On the digital audio monitor front panel, press the Audio View button. g. Verify that the digital audio monitor bar graphs show both Channel 1 and Channel 2 at –20 dBfs. 14.
  • Page 769 Performance Verification 20. Verify that the waveform is correctly displayed on the digital TV waveform monitor. 21. Verify that the CRC ERROR LED on the digital TV waveform monitor does not light. 22. Verify that the digital audio monitor bar graphs show both Channel 1 and Channel 2 at –20 dBfs.
  • Page 770 Measure ... . . Amplitude Sampling Oscilloscope (TDS820) 75 W BNC cable TG700 mainframe rear panel 75 W coax terminator 75 W signal adapter HDVG7 module SMA to BNC adapter Figure 4-2: Equipment connection for verifying the output level and eye pattern 4.
  • Page 771 Performance Verification : 159.6mV : 82.8mV Ch1 Ampl 162.0mV Figure 4-3: Example of eye pattern for an acceptable output signal 5. Use the sampling oscilloscope to measure that the amplitude, rise and fall time are as follows. Amplitude : approximately 160 mV Rise and fall time : t 270 ps (20 % to 80 %) 6.
  • Page 772 11. Check that SIGNAL 2 eye pattern displayed on the sampling oscilloscope is fully open (see Figure 4–3 ) and repeat step 5. This completes the Performance Verification procedure. If you require further assistance, contact your nearest Tektronix Service Center. 4-10 HDVG7 HDTV Digital Video Generator Service Manual...

  • Page 773: Adjustment Procedures

    Adjustment Procedures www.valuetronics.com...
  • Page 774 www.valuetronics.com...
  • Page 775 Access When adjusting the output level, you need to remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual.
  • Page 776 Preparation To perform the output level adjustment, you must first remove the top cover of the TG700 mainframe. For removal and installation procedures for the top cover, refer to the TG700 TV Signal Generator Platform Service Manual. After you have removed the top cover, find the variable resistors on the HDVG7 circuit board.
  • Page 777 ) arrow button to select Factory Default. c. Press the ENTER button to recall the factory default settings. d. Press the CANCEL button to return the TG700 main menu. 5. Select the 75 % Color Bars signal as follows: a. Press the MODULE button to display the HDVG7 main menu.
  • Page 778 Adjustment Procedures 8. Locate variable resistor R530 on the HDVG7 circuit board. See Figure 5–1. 9. Adjust the R530 so that the signal amplitude is equal to the height between the two cursors set in step 6. BLACK Output Level Adjustment (Option BK Only). 10.

  • Page 779: Maintenance

    Maintenance www.valuetronics.com...
  • Page 780 www.valuetronics.com...
  • Page 781 If the instrument does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems. NOTE. Contact your local Tektronix representative for information on where to return your instrument if it requires repair during the warranty period.
  • Page 782 Maintenance Electrostatic Damage This instrument contains electrical components that are susceptible to damage Prevention from electrostatic discharge. Static voltages of 1 kV to 30 kV are common in unprotected environments. CAUTION. Static discharge can damage any semiconductor component in this instrument.
  • Page 783 Inspecting and Cleaning Clean the mainframe and modules often enough to prevent dust or dirt from Procedures accumulating. Refer to Inspecting and Cleaning Procedures in the TG700 TV Signal Generator Platform Service Manual. Performance Verification Check module performance after each 2000 hours of operation or every 12 months.
  • Page 784 Maintenance c. Pack dunnage or urethane foam between the instrument and the carton. If using Styrofoam kernels, overfill the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushion- ing on all sides of the instrument. 3.
  • Page 785 Replacing the Rear Panel Perform the following procedure to replace the rear panel connector: Connectors 1. Use the Module Installation section in the TG700 TV Signal Generator Platform Service Manual to remove the HDVG7 Generator module from the mainframe. 2. Disconnect the cables at P500 (SIGNAL 1) and P502 (SIGNAL 2) on the HDVG7 circuit board.
  • Page 786 Removal and Replacement Replacing the Chassis Perform the following procedure to replace the chassis: 1. Use the 14 mm nut driver to remove the nuts from each of the rear panel connectors. 2. Disconnect the fan’s power cable at P040 on the HDVG7 circuit board. 3.

  • Page 787: Troubleshooting

    HDVG7 Generator module. These procedures will help you decide whether it is necessary to replace your module. If the TG700 mainframe does not boot up or if the display is not working, refer to Troubleshooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 788 Troubleshooting Troubleshooting Trees Start Power on the TG700 in factory mode and execute diagnostics as follows: 1. Connect the power cable to the instrument with the FRONT PANEL ENABLE button pressed. 2. Press the up and down arrow button to select UTILITY, and then press the ENTER button.
  • Page 789 Troubleshooting Power off and remove the module, and Is the module then install it into the TG700 mainframe operating correctly? that is functioning correctly. The problem is probably in the Is the module TG700 mainframe. Refer to Trouble operating correctly? shooting in the TG700 TV Signal Generator Platform Service Manual.
  • Page 790 Troubleshooting 6-10 HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
  • Page 791 Options www.valuetronics.com...
  • Page 792 www.valuetronics.com...
  • Page 793 Options This section describes options that are available for the HDVG7 Generator module. The following options are available: H Option BK (Serial digital black output ) H Option D1 (Test data report) Option BK Description Two serial digital black signal outputs are added to the HDVG7 Generator module when this option is specified.
  • Page 794 Options HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...

  • Page 795: Replaceable Electrical Parts

    Replaceable Electrical Parts www.valuetronics.com...
  • Page 796 www.valuetronics.com...
  • Page 797 Replaceable Electrical Parts The module-level replaceable electrical parts are included in the Replaceable Mechanical Parts list. Since component-level repair is not supported, individual electrical components are not listed. HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
  • Page 798 Replaceable Electrical Parts HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
  • Page 799 Diagram www.valuetronics.com...
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  • Page 801 TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 TV Signal Generator Platform Service Manual. A block diagram of the HDVG7 Generator module is located in the Theory of Operation section, beginning on page 3–1.
  • Page 802 Diagram HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...

  • Page 803: Mechanical Parts List

    Mechanical Parts List www.valuetronics.com...
  • Page 804 www.valuetronics.com...
  • Page 805 For more information about the module exchange program, call 1–800–833–9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix web site for a list of offices: www.tektronix.com Module Repair and Return. You may ship your module to us for repair, after which we will return it to you.
  • Page 806 Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. 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 807 NUT,PLATE:MODULE FAN,AL 80009 119-B067-00 FAN,TUBEAXIAL:119-B066-00 W/CONN 80009 211-A267-00 SCREW,MACHINE:M3X8MM L,PNH,STL,NI PL,CROSS 80009 REC,W/KOGATAMARU & LOCK WASHER 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR TEKTRONIX JAPAN 80009 342-A146-00 INSULATOR,PLATE:HEAT CONDUCTOR,RUBBER, 80009 20MMX20MMX10MM THK [TC1000-TCK] 342-A146-00 INSULATOR,PLATE:HEAT CONDUCTOR,RUBBER, 80009 20MMX20MMX10MM THK [TC1000-TCK] STANDARD ACCESSORIES...
  • Page 808 Mechanical Parts List Figure 10-1: HDVG7 Generator module exploded view 10-4 HDVG7 HDTV Digital Video Generator Service Manual www.valuetronics.com...
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