Page 1 TG700 TV Signal Generator Platform Service Manual *P077023005* 077-0230-05...
Page 3 TG700 TV Signal Generator Platform Service Manual www.tektronix.com 077-0230-05...
Page 4 Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material.
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. Customer shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products returned to any other locations.
Page 7: Table Of Contents
1-15 Procedure for Internal Modules ................1-20 TG700 Mainframe Troubleshooting................1-24 Diagnostics ....................1-24 Troubleshooting Trees..................1-25 TG700 Mainframe Diagrams.................. 1-28 TG700 Mainframe Replaceable Parts List ..............1-31 Parts Ordering Information ................1-31 TG700 TV Signal Generator Platform Service Manual...
Page 8 3-12 Tools Required ..................... 3-12 Replacing the Rear-Panel Connectors and Chassis ............ 3-12 AGL7 Analog Genlock Module Troubleshooting ............3-14 Equipment Required..................3-14 Backing Up the Instrument Settings ..............3-14 Troubleshooting Trees..................3-15 TG700 TV Signal Generator Platform Service Manual...
Page 9 5-22 Tools Required ..................... 5-22 Replacing the Rear-Panel Connectors and Chassis ............ 5-22 AVG7 Analog Video Generator Troubleshooting ............5-24 Equipment Required..................5-24 Backing Up the Instrument Settings ..............5-24 Troubleshooting Trees..................5-25 TG700 TV Signal Generator Platform Service Manual...
Page 10 BG7 Black Generator Removal and Replacement ............Tools Required ....................Replacing the Rear-Panel Connectors and Chassis ............BG7 Black Generator Troubleshooting ..............7-11 Equipment Required..................7-11 Backing Up the Instrument Settings ..............7-11 Troubleshooting Trees..................7-12 TG700 TV Signal Generator Platform Service Manual...
Page 11 HD3G7 HD 3 Gb/s SDI Video Generator Theory of Operation........... 10-1 Overview ....................10-1 FPGA and Associated Circuits ................10-1 Clocks and Frames..................10-2 Input and Output Boards .................. 10-2 Power Supplies..................... 10-3 TG700 TV Signal Generator Platform Service Manual...
Page 12 Tools Required ..................... 12-8 Replacing the Rear-Panel Connectors and Chassis ............ 12-8 HDVG7 HDTV Digital Video Generator Troubleshooting ..........12-10 Equipment Required..................12-10 Backing Up the Instrument Settings ..............12-10 Troubleshooting Trees..................12-11 TG700 TV Signal Generator Platform Service Manual...
Page 13 SDI7 Dual Channel SD/HD/3G SDI Video Generator Maintenance ........13-12 SDI7 Dual Channel SD/HD/3G SDI Video Generator Removal and Replacement ....13-13 SDI7 Troubleshooting ..................13-16 SDI7 Dual Channel SD/HD/3G SDI Video Generator Replaceable Parts List ......13-29 TG700 TV Signal Generator Platform Service Manual...
Page 14 Figure 4-1: Simpliﬁed block diagram of the ATG7 Generator module........Figure 4-2: Troubleshooting procedure (1) ..............Figure 4-3: Troubleshooting procedure (2) ..............Figure 4-4: ATG7 Generator module connections ............Figure 4-5: ATG7 Generator module exploded view............4-10 viii TG700 TV Signal Generator Platform Service Manual...
Page 15: Figure 1-10: Troubleshooting Procedure
Figure 8-2: DVG7 circuit board view ................Figure 8-3: Equipment connection for adjusting the output level........... Figure 8-4: Troubleshooting procedure (1) ..............8-11 Figure 8-5: Troubleshooting procedure (2) ..............8-12 Figure 8-6: DVG7 Generator module connections ............8-13 TG700 TV Signal Generator Platform Service Manual...
Page 16 13-15 Figure 13-3: SDI7 power supply test points..............13-25 Figure 13-4: SDI7 Dual Channel SD/HD/3G SDI Video Generator – replaceable parts ....13-30 Figure 13-5: SDI7 main board – replaceable parts ............13-31 TG700 TV Signal Generator Platform Service Manual...
Page 17 1-38 Table 1-11: Blank panel – replaceable parts..............1-40 Table 1-12: Standard and optional accessories for TG700 mainframe ........1-40 Table 2-1: Required tools for removal and replacement of AG7 Audio Generator ....... Table 2-2: Equipment required for AG7 Audio Generator troubleshooting .......
Page 18 13-18 Table 13-7: SDI7 module factory default settings ............13-21 Table 13-8: SDI7 Dual Channel SD/HD/3G SDI Video Generator – replaceable parts ....13-29 Table 13-9: SDI7 main board – replaceable parts............13-31 TG700 TV Signal Generator Platform Service Manual...
Page 19: General Safety Summary
Do not operate in an explosive atmosphere. Keep product surfaces clean and dry. Provide proper ventilation. Refer to the manual's installation instructions for details on installing the product so it has proper ventilation. TG700 TV Signal Generator Platform Service Manual xiii...
Page 20 DANGER indicates an injury hazard immediately accessible as you read the marking. WARNING indicates an injury hazard not immediately accessible as you read the marking. CAUTION indicates a hazard to property including the product. The following symbol(s) may appear on the product: TG700 TV Signal Generator Platform Service Manual...
Page 21: 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...
Page 22 Service Safety Summary TG700 TV Signal Generator Platform Service Manual...
Page 23: Preface
Preface This is the service manual for the TG700 TV Signal Generator Platform and associated modules. This manual contains information needed to service a TG700 and its modules to the module level. Manual Structure This manual is divided into sections. Each section contains information about the mainframe or a module.
Page 24: Manual Conventions
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.
Page 25: Finding Other Information
Tektronix Web site at www.tektronix.com/manuals. The TG700 TV Signal Generator Platform User Manual contains a tutorial to quickly describe how to operate the TG700. It also includes an in-depth discussion on how to more completely use the TG700 features. This manual is available in both English (Tektronix part number 071-1970-XX) and Japanese (Tektronix part number 071-1971-XX).
Page 26: Introduction
Veriﬁcation manual, should be done every 12 months. In addition, a performance check is recommended after repair. The Speciﬁcations and Performance Veriﬁcation manual is available on the Web, at www.tektronix.com. If the TG700 mainframe or any installed product modules do not meet performance criteria, repair is necessary. Strategy for Servicing Throughout this manual, the term module appears, referring to any ﬁeld-replaceable component or assembly.
Page 27: 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 and the latest new options.
Page 28: Maintenance For Generators And Modules
Maintenance for Generators and Modules Maintenance for Generators and Modules The following information applies to all of the generators and modules that can be used with the TG700 mainframe. Before doing maintenance procedures on any module, read the following information. Preparation Read and follow these preparation instructions before attempting to perform any maintenance or service to the instrument.
Page 29 Cleaning of rosin residue is not recommended. Most cleaning solvents tend to reactivate the rosin and spread it under components where it may cause corrosion under humid conditions. The rosin residue, if left alone, does not exhibit these corrosive properties. TG700 TV Signal Generator Platform Service Manual xxiii...
Page 30: Inspection And Cleaning
Check module performance after each 2000 hours of operation or every 12 months. This helps ensure maximum performance and assists in locating defects that may not be apparent during regular operation. Performance veriﬁcation procedures can be found in the TG700 Signal Generator Platform Speciﬁcations and Performance Veriﬁcation Technical Reference. xxiv...
Page 31: Repackaging Instructions
If using Styrofoam kernels, overﬁll the box and compress the kernels by closing the lid. There should be three inches of tightly packed cushioning on all sides of the instrument. 3. Seal the carton with shipping tape, industrial stapler, or both. TG700 TV Signal Generator Platform Service Manual...
Page 32 Maintenance for Generators and Modules xxvi TG700 TV Signal Generator Platform Service Manual...
Page 33: Tg700 Platform
TG700 Platform...
Page 35: Tg700 Mainframe Theory Of Operation
This block converts the +5 V power, supplied by the Power Supply module, to –5 V, 3.3 V, 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 36: Power Supply Module
TG700 Mainframe 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. 1–2 TG700 TV Signal Generator Platform Service Manual...
Page 37: Tg700 Adjustment Procedures
Before proceeding, note the following requirement. Warm-Up Period The TG700 requires a 20 minute warm-up time in a +20 °C to +30 °C environment before it is adjusted. Adjustments done before the operating temperature has stabilized may cause errors in performance. In addition, the signal generator requires appropriate warm-up time to meet the frequency accuracy.
Page 38: Master Clock Frequency Adjustment
ENTER button. d. Press the CANCEL button to return to the AGL7 main menu. 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 39: Tg700 Mainframe Maintenance
TG700 Mainframe Maintenance TG700 Mainframe Maintenance This section contains the information needed to do periodic and corrective maintenance on the TG700. The following subsections are included: Preparation – Introduction plus general information on preventing damage to internal modules when doing maintenance.
Page 40: Preparation
TG700 is used. A proper time to perform preventive maintenance is just before 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 41: Table 1-2: External Inspection Checklist
Inspection – Exterior. Inspect the outside of the TG700 for damage, wear, and missing parts, using the following table as a guide. A TG700 that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance.
Page 42: Table 1-3: Internal Inspection Checklist
Inspection – Interior. To access the inside of the TG700 for inspection and cleaning, refer to the Removal and Installation Procedures in this section. Inspect the internal portions of the TG700 for damage and wear, using the table as a guide. Defects found should be repaired immediately.
Page 43 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 44: Tg700 Mainframe Removal And Installation Procedures
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 45: Table 1-4: Summary Of Procedures
(See page 1-20.) • 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 46: Figure 1-2: Tg700 Orientation
TG700 Mainframe Removal and Installation Procedures TG700 Orientation In this manual, procedures refer to "front," "rear," "top," etc. of the TG700. The following ﬁgure shows how the sides are referenced. Figure 1-2: TG700 orientation 1–12 TG700 TV Signal Generator Platform Service Manual...
Page 47: Figure 1-3: External Modules
TG700 Mainframe Removal and Installation Procedures Figure 1-3: External modules TG700 TV Signal Generator Platform Service Manual 1–13...
Page 48: Figure 1-4: Internal Modules
TG700 Mainframe Removal and Installation Procedures Figure 1-4: Internal modules 1–14 TG700 TV Signal Generator Platform Service Manual...
Page 49: Access Procedure
Locate the line cord in the location diagram External Modules. (See Figure 1-3.) 2. Orient the instrument: Set the TG700 so its bottom is down on the work surface and its rear is facing you. 3. Remove the line cord: Find the line cord on the rear panel. Grasp the plug and pull the line cord and clamp away to complete the removal.
Page 50: Figure 1-5: Top Cover Removal
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 1-5.) 4.
Page 51 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 52: Figure 1-6: Front-Panel Unit Removal
Use a screwdriver with a #2 Phillips tip to remove the two screws securing the front cover to the left and right sides of the front frame. b. Grasp the front cover and pull it forward. 1–18 TG700 TV Signal Generator Platform Service Manual...
Page 53: Figure 1-7: Disassembly Of Front-Panel Assembly
5. Now hand disassemble the front-panel assembly components. (See Figure 1-7.) Reverse the procedure to reassemble. 6. Reinstallation: Perform steps 2 through 5 in reverse order to reinstall the front-panel assembly. Figure 1-7: Disassembly of front-panel assembly TG700 TV Signal Generator Platform Service Manual 1–19...
Page 54: Procedure For Internal Modules
Locate the module to be removed in the locator diagram Internal modules. (See Figure 1-4.) 2. Orient the instrument: Set the TG700 so its bottom is down on the work surface and its right side is facing you. 3. Remove the A10 Main board: (See Figure 1-8.) a.
Page 55: Figure 1-8: A10 Main Board Removal
Locate the module to be removed in the locator diagram Internal modules. (See Figure 1-4.) 2. Orient the instrument: Set the TG700 so its bottom is down on the work surface and its back is facing you. 3. Remove the power supply module: a.
Page 56 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. 1–22 TG700 TV Signal Generator Platform Service Manual...
Page 57: Figure 1-9: A40 Lan Board, Fan, And Rfi Filter Removal
TG700 Mainframe Removal and Installation Procedures Figure 1-9: A40 LAN board, fan, and RFI ﬁlter removal TG700 TV Signal Generator Platform Service Manual 1–23...
Page 58: Tg700 Mainframe 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 completed.
Page 59: Troubleshooting Trees
TG700 Mainframe Troubleshooting Troubleshooting Trees Figure 1-10: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 1–25...
Page 60 TG700 Mainframe Troubleshooting Figure 1-11: Troubleshooting procedure (2) 1–26 TG700 TV Signal Generator Platform Service Manual...
Page 61: Figure 1-12: A10 Main Board (View From Top)
TG700 Mainframe Troubleshooting Figure 1-12: A10 Main board (view from top) TG700 TV Signal Generator Platform Service Manual 1–27...
Page 62: Tg700 Mainframe Diagrams
This section contains the following diagrams: Block diagram of the TG700 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. 1–28...
Page 63: Figure 1-13: Tg700 Block Diagram
TG700 Mainframe Diagrams Figure 1-13: TG700 block diagram TG700 TV Signal Generator Platform Service Manual 1–29...
Page 64: Figure 1-14: Tg700 Interconnect Diagram
TG700 Mainframe Diagrams Figure 1-14: TG700 interconnect diagram 1–30 TG700 TV Signal Generator Platform Service Manual...
Page 65: Tg700 Mainframe Replaceable Parts List
TG700 Mainframe Replaceable Parts List TG700 Mainframe Replaceable 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 66: 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 67: Figure 1-15: Main Chassis
SHLD GASKET,ELEK:FINGER TYPE,5.1MMX6.4MM W,BE-CU [97-645-02] 351-0104-03 SL SECT,DWR EXT:12.625 L,W/O HARDWARESAFETY 212-A041-00 SCREW,MACHINE;M4X8MM L,PNH,STL,NI PL,CROSS REC,W/KOGATAMARU&LOCK WASHER 211-A245-01 SCREW,MACHINE;M3X6MM L,PNH,STL,NI PL,CROSS REC,W/KOGATAMARU&LOCK WASHER 161-0216-00 CABLE ASSY,PWR,:3,18 AWG,2.5M L,BLACK,SAFETY CONTROLLED (STANDARD ACCESSORY) Figure 1-15: Main chassis TG700 TV Signal Generator Platform Service Manual 1–33...
Page 68: Table 1-8: Main Frame - Replaceable Parts
GASKET,SHIELD:CONDUCTIVE URETHANE FORM STRIP,7MM WX1MM T, W/ADHESIVE 348-A132-00 42 cm GASKET,SHIELD:CONDUCTIVE URETHANE FORM STRIP,7MM WX1MM T, W/ADHESIVE 348-A559-51 MARKER,IDENT:MKD WARNING 334-1378-03 MARKER,IDENT:MKD SERIAL NO. 348-A133-00 20 cm GASKET,SHIELD:CONDUCTIVE URETHANE FORM STRIP,5.5MM WX13MM T, W/ADHESIVE 1–34 TG700 TV Signal Generator Platform Service Manual...
Page 69: Figure 1-16: Main Frame
TG700 Mainframe Replaceable Parts List Figure 1-16: Main frame TG700 TV Signal Generator Platform Service Manual 1–35...
Page 70: Table 1-9: Front-Panel Unit - Replaceable Parts
SCREW,TPG:M3X8MM L,PNH,STL,BLK ZN PL,CROSS REC [PTP3X8ZB] 174-B790-00 CA ASSY,SP,ELEC:16,28AWG,20CM L,FLAT 174-B791-00 CA ASSY,SP,ELEC:14,28AWG,15CM L,FLAT 671-B082-00 CIRCUIT BOARD ASSY:A20 FRONT KEY,389-B032-XX WIRED 348-A120-00 GASKET SHIELD:CONDUCTIVE URETHANE FORM,2MMX4MM,W/ADHESIVE [E02S040020] 348-A132-00 GASKET,SHIELD:CONDUCTIVE URETHANE FORM STRIP,7MMWX1MMT,W/ADHESIVE TAPE 1–36 TG700 TV Signal Generator Platform Service Manual...
Page 71: Figure 1-17: Front-Panel Unit
TG700 Mainframe Replaceable Parts List Figure 1-17: Front-panel unit TG700 TV Signal Generator Platform Service Manual 1–37...
Page 72: Table 1-10: Power Supply Module - Replaceable Parts
SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS REC,W/KOGATAMARU & LOCK WASHER 200-A514-00 COVER,TOP:POWER SUPPLY,AL 174-C019-00 CA ASSY,SP,ELEC:0-N 9-N,10CM L 174-B789-00 CA ASSY,SP,ELEC:10,28AWG,30CM L,FLAT 174-B788-00 CA ASSY,SP,ELEC:8,18AWG,10CM L,2-N 671-B084-51 CIRCUIT BOARD ASSY:A40 LAN CONNECT,389-B034-XX WIRED 334-1378-03 MARKER,IDENT:MKD SERIAL NO. FOR SONY/TEK 1–38 TG700 TV Signal Generator Platform Service Manual...
Page 73: Figure 1-18: Power Supply Module
TG700 Mainframe Replaceable Parts List Figure 1-18: Power supply module TG700 TV Signal Generator Platform Service Manual 1–39...
Page 74: Figure 1-19: Blank Panel
SPRING,CONICAL:VXI MOUNTING SCREW,0.26MM SUS304,5.4MM L 213-1129-01 SCREW,MACHINE:M2.5X11MM L,PAN HD,STL,NI PL,CROSS REC & SLOTTED 348-A128-00 SHLD GASKET,ELEC:FINGER TYPE,5.1 MM LX6.4MM W,BE-CU [97-645-05] Figure 1-19: Blank panel Table 1-12: Standard and optional accessories for TG700 mainframe Component Tektronix Serial no. Serial no. number...
Page 75: Removing A Module
Be careful not to damage the parts and cables inside of the module when you remove the module from the mainframe. 4. Pull the module slowly toward you while supporting the terminations or BNC cables attached to the connectors. TG700 TV Signal Generator Platform Service Manual 1–41...
Page 76 Removing a Module 1–42 TG700 TV Signal Generator Platform Service Manual...
Page 77: Ag7 Audio Generator
AG7 Audio Generator...
Page 79: Ag7 Audio Generator Theory Of Operation
The block outputs 48 kHz clock signal. The output level of the clock signal can be set to either a CMOS compatible level or 1 V. This feature is available through jumper J452 on the circuit board. Figure 2-1: Simpliﬁed block diagram of the AG7 Generator module TG700 TV Signal Generator Platform Service Manual 2–1...
Page 80: Ag7 Audio Generator Maintenance
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. 2–2...
Page 81: Ag7 Audio Generator Removal And Replacement
The cable from J440 at SILENCE connector. The cable from J450 at 48 kHz CLOCK connector. 3. Use a screwdriver with a #2 Phillips tip to remove the four screws securing the AG7 circuit board to the chassis. TG700 TV Signal Generator Platform Service Manual 2–3...
Page 82 5. Carefully place the AG7 circuit board in place on the chassis. 6. Use a screwdriver with a #2 Phillips tip to install the four screws securing the circuit board to the chassis. 7. Reconnect all the cables to the rear-panel connectors. 2–4 TG700 TV Signal Generator Platform Service Manual...
Page 83: Ag7 Audio Generator 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 84: Troubleshooting Trees
AG7 Audio Generator Troubleshooting Troubleshooting Trees Figure 2-2: Troubleshooting procedure (1) 2–6 TG700 TV Signal Generator Platform Service Manual...
Page 85 AG7 Audio Generator Troubleshooting Figure 2-3: Troubleshooting procedure (2) TG700 TV Signal Generator Platform Service Manual 2–7...
Page 86: Ag7 Audio Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the AG7 Generator module is located in the AG7 Theory of Operation section.
Page 87: Ag7 Audio Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 88: Figure 2-5: Ag7 Generator Module Exploded View
AG7 Audio Generator Replaceable Parts List STANDARD ACCESSORIES 075-0986-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS 063-3939-XX KIT: SOFTWARE LIBRARY, DOCUMENTATION DVD OPTIONAL ACCESSORIES 003-A042-00 NUTDRIVER,BOX:11MM HEX,BNC RETAINING NUT, MODIFIED 14.5MM Figure 2-5: AG7 Generator module exploded view 2–10 TG700 TV Signal Generator Platform Service Manual...
Page 89: Agl7 Analog Genlock Module
AGL7 Analog Genlock Module...
Page 91: Agl7 Analog Genlock Module Theory Of Operation
The "D/A Converter & Amp 3" also has a wide bandwidth ﬁlter for the HDTV trilevel sync signal. Word Clock Generator This block generates a 48 kHz word clock signal. TG700 TV Signal Generator Platform Service Manual 3–1...
Page 92: Figure 3-1: Simpliﬁed Block Diagram Of The Agl7 Genlock Module
AGL7 Analog Genlock Module Theory of Operation Figure 3-1: Simpliﬁed block diagram of the AGL7 Genlock module 3–2 TG700 TV Signal Generator Platform Service Manual...
Page 93: Agl7 Analog Genlock Adjustment Procedures
Access When adjusting the output offset, output gain, and clock timing, you need to remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) Equipment Required The following table lists the equipment required to adjust the output offset, output gain, and clock timing.
Page 94: Output Offset And Gain Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial terminator, and...
Page 95 Figure 3-3: 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 restart the instrument in Factory mode.
Page 96 AGL7 Genlock module. 19. Locate variable resistor R581 on the AGL7 circuit board. (See Figure 3-2.) 20. Adjust R581 so that the output gain is 1 V ±1 mV. 3–6 TG700 TV Signal Generator Platform Service Manual...
Page 97: Clock Timing Adjustment (Board Number 671-B089-Xx And 671-B279-00 Only)
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Select the NTSC Black Burst signal for BLACK 1 and BLACK 2 and 1080/59.94i signal for BLACK 3 as follows:...
Page 98 8. Connect the probe tip from the oscilloscope CH2 input to TP430. 9. Set the oscilloscope settings as indicated below: Vertical 500 mV/div Vertical position –3.0 div Horizontal 2 ns/div Trigger source Trigger level 1.5 V Trigger slope Rising Edge 3–8 TG700 TV Signal Generator Platform Service Manual...
Page 99: Figure 3-4: Timing Relationship Between Ch1 And Ch2 Signals
14. Change the CH2 probe connection from TP430 to TP410. 15. Adjust R472 so that the CH2 signal is delayed by 8 ±0.5 ns from the CH1 signal. 16. Change the CH1 probe connection from TP502 to TP504. TG700 TV Signal Generator Platform Service Manual 3–9...
Page 100 +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 R475 completely clockwise and then repeat parts a through d. 3–10 TG700 TV Signal Generator Platform Service Manual...
Page 101: Agl7 Analog Genlock Module Maintenance
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. TG700 TV Signal Generator Platform Service Manual...
Page 102: Agl7 Analog Genlock Module Removal And Replacement
(That is, make bends in the brown portion of the coax cable between the heat shrink tubing ends, not within the heat shrink.) (See Figure 3-5.) 3–12 TG700 TV Signal Generator Platform Service Manual...
Page 103: Figure 3-5: Dressing The Agl7 Bnc Cables
6. Use a screwdriver with a #2 Phillips tip to install the ﬁve screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. TG700 TV Signal Generator Platform Service Manual 3–13...
Page 104: Agl7 Analog Genlock Module 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 105: Troubleshooting Trees
AGL7 Analog Genlock Module Troubleshooting Troubleshooting Trees Figure 3-6: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 3–15...
Page 106 AGL7 Analog Genlock Module Troubleshooting Figure 3-7: Troubleshooting procedure (2) 3–16 TG700 TV Signal Generator Platform Service Manual...
Page 107: Agl7 Analog Genlock Module Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the AGL7 Genlock module is located in the AGL7 Theory of Operation section.
Page 108: Agl7 Analog Generator Module Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 109: Figure 3-9: Agl7 Genlock Module Exploded View
AGL7 Analog Generator Module Replaceable Parts List Figure 3-9: AGL7 Genlock module exploded view TG700 TV Signal Generator Platform Service Manual 3–19...
Page 110 AGL7 Analog Generator Module Replaceable Parts List 3–20 TG700 TV Signal Generator Platform Service Manual...
Page 111: Atg7 Analog Test Generator
ATG7 Analog Test Generator...
Page 113: Atg7 Analog Test Generator Theory Of Operation
BARS generator, and SIGNAL generator to analog signal and reconstruct the signal for output. Figure 4-1: Simpliﬁed block diagram of the ATG7 Generator module TG700 TV Signal Generator Platform Service Manual 4–1...
Page 114: Atg7 Analog Test Generator Maintenance
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. 4–2...
Page 115: Atg7 Analog Test Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. TG700 TV Signal Generator Platform Service Manual 4–3...
Page 116 6. Use a screwdriver with a #2 Phillips tip to install the ﬁve screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. 4–4 TG700 TV Signal Generator Platform Service Manual...
Page 117: Atg7 Analog Test Generator 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 the TG700 Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 118: Troubleshooting Trees
ATG7 Analog Test Generator Troubleshooting Troubleshooting Trees Figure 4-2: Troubleshooting procedure (1) 4–6 TG700 TV Signal Generator Platform Service Manual...
Page 119 ATG7 Analog Test Generator Troubleshooting Figure 4-3: Troubleshooting procedure (2) TG700 TV Signal Generator Platform Service Manual 4–7...
Page 120: Atg7 Analog Test Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the ATG7 Generator module is located in the ATG7 Theory of Operation section.
Page 121: Atg7 Analog Test Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 122: Figure 4-5: Atg7 Generator Module Exploded View
ATG7 Analog Test Generator Replaceable Parts List Figure 4-5: ATG7 Generator module exploded view 4–10 TG700 TV Signal Generator Platform Service Manual...
Page 123: Avg7 Analog Video Generator
AVG7 Analog Video Generator...
Page 125: Avg7 Analog Video Generator 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 Overlay Controller to analog signal and reconstruct the signal for output. TG700 TV Signal Generator Platform Service Manual 5–1...
Page 126: Figure 5-1: Simpliﬁed Block Diagram Of The Avg7 Generator Module
AVG7 Analog Video Generator Theory of Operation Figure 5-1: Simpliﬁed block diagram of the AVG7 Generator module 5–2 TG700 TV Signal Generator Platform Service Manual...
Page 127: Avg7 Analog Video Generator Adjustment Procedures
WARNING. To avoid potential shock, which could cause injury or death, 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 128: Equipment Required
Preparation To perform the output offset and gain adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the variable resistors on the AVG7 circuit board. (See Figure 5-2.) 5–4...
Page 129: Figure 5-2: Location Of The Variable Resistors For The Output Offset And Gain Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial termination, and...
Page 130 20. Locate variable resistors R651A (coarse) and R651B (ﬁne) on the AVG7 circuit board. (See Figure 5-2.) 21. Adjust R651A and R651B so that the output gain is 700.4 mV ±1 mV. 5–6 TG700 TV Signal Generator Platform Service Manual...
Page 131: Frame Timing And Clock Timing Adjustments
To perform the frame timing and clock timing adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the test points on the AVG7 circuit board.
Page 132: Figure 5-4: Location Of The Test Points For The Frame Timing And Clock Timing Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components 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 133 (►) arrow button to adjust the delay value to 2.0 ns. 23. Save the waveform on the oscilloscope in Ref1, and then press the up (▲) or down (▼) arrow button to select 10.0 ns. TG700 TV Signal Generator Platform Service Manual 5–9...
Page 134: Group Delay Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable and the 75 Ω signal adapter to connect the upper CH 1 connector on the AVG7 Generator module to the CH 1 input connector on the oscilloscope.
Page 135: Figure 5-6: Equipment Connection For Adjusting The Group Delay
Press the MODULE button to display the AVG7 main menu. b. Press the FORMAT button to select PAL-1, and then press the ENTER button. c. Press the OTHER button to select CCIR17. TG700 TV Signal Generator Platform Service Manual 5–11...
Page 136: Figure 5-7: Adjusting The Baseline Of The Modulated 20T Pulse Signal
12. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AVG7 Generator module. 13. Adjust C604B and C635A so that the baseline of the modulated 20T pulse signal is ﬂat. 5–12 TG700 TV Signal Generator Platform Service Manual...
Page 137: Frequency Response Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the two 75 Ω BNC cable, peak detector head, and BNC female-to-female connector to connect the upper CH 1 connector on the AVG7 Generator module to the +INPUT connector on the peak detector ampliﬁer.
Page 138: Figure 5-9: Equipment Connection For Adjusting The Frequency Response
CH 2 Trigger type Edge Acquire menu Peak Detect 5. Set the test signal generator (ATG7 module) settings as indicated below: Output selection BLACK 1 Signal format NTSC Test signal Field Reference 5–14 TG700 TV Signal Generator Platform Service Manual...
Page 139 11. Turn the LEVEL knob on the peak detector ampliﬁer so that the green LED lights. 12. Adjust C835A so that the signal amplitudes of 500 kHz and 5 MHz are at the same level. (See Figure 5-10.) TG700 TV Signal Generator Platform Service Manual 5–15...
Page 140: Figure 5-10: Adjusting The Signal Amplitudes
21. Adjust R635A so that the signal amplitudes from 500 kHz to 5 MHz are at the same level. 22. Readjust C635A and R635A so that the differences of the signal amplitudes from 500 kHz to 5 MHz are within 2 mV. 5–16 TG700 TV Signal Generator Platform Service Manual...
Page 141: Interchannel Delay Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable and the 75 Ω signal adapter to connect the upper CH 1 connector on the AVG7 Generator module to the CH 1 input connector on the oscilloscope.
Page 142: Figure 5-12: Equipment Connection For Adjusting The Interchannel Delay
7. Press the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously, and then release the MODULE and FORMAT buttons to restart the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the "TG700 Startup with Factory Mode." message appears. 5–18...
Page 143 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 TG700 TV Signal Generator Platform Service Manual 5–19...
Page 144: Frequency Response Conﬁrmation
2. Check that the time delay among the channel outputs is less than or equal to 1 ns. If necessary, readjust the following variable capacitors: CH 1 output C837A CH 2 output C737A CH 3 output C637A 5–20 TG700 TV Signal Generator Platform Service Manual...
Page 145: Avg7 Analog Video Generator Maintenance
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. TG700 TV Signal Generator Platform Service Manual...
Page 146: Avg7 Analog Video Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. 5–22 TG700 TV Signal Generator Platform Service Manual...
Page 147 6. Use a screwdriver with a #2 Phillips tip to install the ﬁve screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. TG700 TV Signal Generator Platform Service Manual 5–23...
Page 148: Avg7 Analog Video Generator Troubleshooting
Backing Up the Instrument Settings Before you begin the troubleshooting procedures, create a preset to save your instrument settings as follows: 1. Press the MODULE button until the mainframe main menu (TG700: PRESET) appears. 2. Press the ENTER button to access the PRESET submenu.
Page 149: Troubleshooting Trees
AVG7 Analog Video Generator Troubleshooting Troubleshooting Trees Figure 5-13: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 5–25...
Page 150: Figure 5-14: Troubleshooting Procedure (2)
AVG7 Analog Video Generator Troubleshooting Figure 5-14: Troubleshooting procedure (2) 5–26 TG700 TV Signal Generator Platform Service Manual...
Page 151: Avg7 Analog Video Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the AVG7 Generator module is located in the AVG7 Theory of Operation section.
Page 152: Avg7 Analog Video Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 153: Figure 5-16: Avg7 Generator Module Exploded View
AVG7 Analog Video Generator Replaceable Parts List Figure 5-16: AVG7 Generator module exploded view TG700 TV Signal Generator Platform Service Manual 5–29...
Page 154 AVG7 Analog Video Generator Replaceable Parts List 5–30 TG700 TV Signal Generator Platform Service Manual...
Page 155: Awvg7 Analog Wideband Video Generator
AWVG7 Analog Wideband Video Generator...
Page 157: Awvg7 Analog Wideband Video Generator 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 Overlay Controller to analog signal and reconstruct the signal for output. TG700 TV Signal Generator Platform Service Manual 6–1...
Page 158: Figure 6-1: Simpliﬁed Block Diagram Of The Awvg7 Generator Module
AWVG7 Analog Wideband Video Generator Theory of Operation Figure 6-1: Simpliﬁed block diagram of the AWVG7 Generator module 6–2 TG700 TV Signal Generator Platform Service Manual...
Page 159: Awvg7 Analog Wideband Video Generator Adjustment Procedures
TG700 mainframe top cover with power connected. Access When adjusting the AWVG7 Generator module, you need to remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) NOTE. If the serial number of your instrument is B010600 and above, replace the resistor and capacitor numbers in the ﬁgures and procedures as follows:...
Page 160: Equipment Required
Preparation To perform the output offset and gain adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the variable resistors on the AWVG7 circuit board. (See Figure 6-2.) 6–4...
Page 161: Figure 6-2: Location Of The Variable Resistors For The Output Offset And Gain Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial termination, and...
Page 162 19. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AWVG7 Generator module. 20. Locate variable resistors R651A (coarse) and R651B (ﬁne) on the AWVG7 circuit board. (See Figure 6-2.) 6–6 TG700 TV Signal Generator Platform Service Manual...
Page 163: Frame Timing And Clock Timing Adjustments
To perform the frame timing and clock timing adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the test points on the AWVG7 circuit board.
Page 164: Figure 6-4: Location Of The Test Points For The Frame Timing And Clock Timing Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components 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 165 (▼) arrow button to select 10.0 ns. 24. While seeing the Delay Timing value on the oscilloscope, press the left (◄) or right (►) arrow button to adjust the delay value to 8.0 ns. TG700 TV Signal Generator Platform Service Manual 6–9...
Page 166: Frequency Response Adjustment
Preparation To perform the frequency response adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the variable capacitors on the AWVG7 circuit board. (See Figure 6-5.) Figure 6-5: Location of the variable capacitors for the frequency response adjustment 6–10...
Page 167: Figure 6-6: Equipment Connection For Adjusting The Frequency Response
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the two 75 Ω BNC cables, peak detector head, and BNC female-to-female connector to connect the upper CH 1 connector on the AWVG7 Generator module to the +INPUT connector on the peak detector ampliﬁer.
Page 168 MODULE and FORMAT buttons to restart the instrument in Factory mode. Continue holding down the FRONT PANEL ENABLE button until the "TG700 Startup with Factory Mode." message appears. 5. Select the DAC Test calibration signal as follows: a.
Page 169: Figure 6-7: Minimizing The Amplitude Changes
11. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AWVG7 Generator module. 12. Adjust C604B so that the amplitude changes from 500 kHz to 20 MHz are at a minimum. TG700 TV Signal Generator Platform Service Manual 6–13...
Page 170: Awvg7 Analog Wideband Video Generator Maintenance
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. 6–14...
Page 171: Awvg7 Analog Wideband Video Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. TG700 TV Signal Generator Platform Service Manual 6–15...
Page 172 6. Use a screwdriver with a #2 Phillips tip to install the ﬁve screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. 6–16 TG700 TV Signal Generator Platform Service Manual...
Page 173: Awvg7 Analog Wideband Video Generator 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 174: Troubleshooting Trees
AWVG7 Analog Wideband Video Generator Troubleshooting Troubleshooting Trees Figure 6-8: Troubleshooting procedure (1) 6–18 TG700 TV Signal Generator Platform Service Manual...
Page 175: Figure 6-9: Troubleshooting Procedure (2)
AWVG7 Analog Wideband Video Generator Troubleshooting Figure 6-9: Troubleshooting procedure (2) TG700 TV Signal Generator Platform Service Manual 6–19...
Page 176: Awvg7 Analog Wideband Video Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the AWVG7 Generator module is located in the Theory of Operation section.
Page 177: Awvg7 Analog Wideband Video Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 178: Figure 6-11: Awvg7 Generator Module Exploded View
AWVG7 Analog Wideband Video Generator Replaceable Parts List Figure 6-11: AWVG7 Generator module exploded view 6–22 TG700 TV Signal Generator Platform Service Manual...
Page 179: Bg7 Black Generator
BG7 Black Generator...
Page 181: Bg7 Black Generator Theory Of Operation
NTSC/PAL and another is for HD). The D/A converter converts the digital data from the Sync Generator to an analog signal and reconstructs the signal for output. Figure 7-1: Simpliﬁed block diagram of the BG7 Generator module TG700 TV Signal Generator Platform Service Manual 7–1...
Page 182: Bg7 Black Generator Adjustment Procedures
Access When adjusting the blanking, luminance, and chrominance levels, you need to remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) Equipment Required The following table lists the equipment required to adjust the output offset, output gain, and luminance gain.
Page 183: Output Offset And Gain Adjustment
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial terminator, and BNC female-to-dual banana adapter to connect the BLACK 1 connector on the BG7 Generator module to the input connector on the digital multimeter.
Page 184 BLACK 4 connector on the BG7 Generator module. 13. Locate variable resistor R791 on the BG7 circuit board. (See Figure 7-2.) 14. Adjust R791 so that the output offset is 0 V ±1 mV. 7–4 TG700 TV Signal Generator Platform Service Manual...
Page 185 BLACK 4 connector on the BG7 Generator module. 25. Locate variable resistor R781 on the BG7 circuit board. (See Figure 7-2.) 26. Adjust R781 so that the output gain is 1 V ±1 mV. TG700 TV Signal Generator Platform Service Manual 7–5...
Page 186: Luminance Gain Adjustment (Option Cb Only)
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable to connect the BLACK 3 connector on the BG7 Generator module to the CHAN A connector on the video measurement set.
Page 187 13. Locate variable resistor R781 on the BG7 circuit board. (See Figure 7-2.) 14. Adjust R781 so that the luminance gain (White) is 700 mV ±1.5 mV. 15. Verify that chrominance gain (Red) is within the range of 658.8 mV to 668.8 mV. TG700 TV Signal Generator Platform Service Manual 7–7...
Page 188: Bg7 Black Generator Maintenance
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. 7–8...
Page 189: Bg7 Black Generator Removal And Replacement
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. TG700 TV Signal Generator Platform Service Manual 7–9...
Page 190 6. Use a screwdriver with a #2 Phillips tip to install the ﬁve screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. 7–10 TG700 TV Signal Generator Platform Service Manual...
Page 191: Bg7 Black Generator 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 192: Troubleshooting Trees
BG7 Black Generator Troubleshooting Troubleshooting Trees Figure 7-5: Troubleshooting procedure (1) 7–12 TG700 TV Signal Generator Platform Service Manual...
Page 193: Figure 7-6: Troubleshooting Procedure (2)
BG7 Black Generator Troubleshooting Figure 7-6: Troubleshooting procedure (2) TG700 TV Signal Generator Platform Service Manual 7–13...
Page 194: Bg7 Black Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the BG7 Generator module is located in the Theory of Operation section.
Page 195: Bg7 Black Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 196: Figure 7-8: Bg7 Generator Module Exploded View
BG7 Black Generator Replaceable Parts List Figure 7-8: BG7 Generator module exploded view 7–16 TG700 TV Signal Generator Platform Service Manual...
Page 197: Dvg7 Digital Video Generator
DVG7 Digital Video Generator...
Page 199: Dvg7 Digital Video Generator Theory Of Operation
This block converts a 10 bits parallel data to SDI signal. Black Generator (Option This block generates black or gray (40% gray) signal for the BLACK 1 and BLACK 2 outputs. BK Only) TG700 TV Signal Generator Platform Service Manual 8–1...
Page 200: Figure 8-1: Simpliﬁed Block Diagram Of The Dvg7 Generator Module
DVG7 Digital Video Generator Theory of Operation Figure 8-1: Simpliﬁed block diagram of the DVG7 Generator module 8–2 TG700 TV Signal Generator Platform Service Manual...
Page 201: Dvg7 Digital Video Generator Adjustment Procedures
Preparation To perform the output level adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the variable resistors on the DVG7 circuit board. (See Figure 8-2.) TG700 TV Signal Generator Platform Service Manual 8–3...
Page 202: Figure 8-2: Dvg7 Circuit Board View
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable and 75 Ω signal adapter to connect the SIGNAL 1 connector on the DVG7 Generator module to the CH1 input connector on the oscilloscope.
Page 203: Figure 8-3: Equipment Connection For Adjusting The Output Level
Press the left (◄) or right (►) 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. 2. Select the 75 % Color Bars signal as follows: a.
Page 204 9. Locate variable resistor R807 on the DVG7 circuit board. (See Figure 8-2.) 10. Adjust R807 so that the signal amplitude is equal to the height between two cursors set in step 6. This completes the output level adjustment procedures. 8–6 TG700 TV Signal Generator Platform Service Manual...
Page 205: Dvg7 Digital Video Generator Maintenance
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. TG700 TV Signal Generator Platform Service Manual...
Page 206: Dvg7 Digital Video Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. 8–8 TG700 TV Signal Generator Platform Service Manual...
Page 207 Use a screwdriver with a #2 Phillips tip to install the two screws securing the rear panel to the chassis. 7. Use a screwdriver with a #2 Phillips tip to install the six screws securing the circuit board to the chassis. TG700 TV Signal Generator Platform Service Manual 8–9...
Page 208: Dvg7 Digital Video Generator 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 209: Troubleshooting Trees
DVG7 Digital Video Generator Troubleshooting Troubleshooting Trees Figure 8-4: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 8–11...
Page 210: Figure 8-5: Troubleshooting Procedure (2)
DVG7 Digital Video Generator Troubleshooting Figure 8-5: Troubleshooting procedure (2) 8–12 TG700 TV Signal Generator Platform Service Manual...
Page 211: Dvg7 Digital Video Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the DVG7 Generator module is located in the DVG7 Theory of Operation section.
Page 212: Dvg7 Digital Video Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 213: Figure 8-7: Dvg7 Generator Module Exploded View
DVG7 Digital Video Generator Replaceable Parts List Figure 8-7: DVG7 Generator module exploded view TG700 TV Signal Generator Platform Service Manual 8–15...
Page 214 DVG7 Digital Video Generator Replaceable Parts List 8–16 TG700 TV Signal Generator Platform Service Manual...
Page 215: Gps7 Gps And Genlock Module With Timecode
GPS7 GPS and Genlock Module with Timecode...
Page 217: Gps7 Theory Of Operation
Time of Day (MTOD) counter. This completes the loop, spread over the two boards, locking the mainframe oven and MTOD counter to the incoming GPS. The TG700 OCXO and related circuits produce the 54 MHz and 74 MHz clocks for all modules used in the TG700 Signal Generator System.
Page 218 Outputs The three Black Generation Engines and the four LTC engines each receive one of three frame reset pulses from the TG700 mainframe, which lock the video frames in all engines to exact references based on MTOD. In order for many units to have the same phase when locked to GPS, the instrument times the frame pulses to an “Epoch.”...
Page 219: Figure 9-1: Simpliﬁed Block Diagram Of The Gps7 Module
GPS7 Theory of Operation Figure 9-1: Simpliﬁed block diagram of the GPS7 module NOTE. The timecode reader and genlock circuitry is only available on GPS7 modules with the REF IN connector on the rear panel. TG700 TV Signal Generator Platform Service Manual 9–3...
Page 220: Gps7 Adjustment Procedures
Cable (use only if you do not have a GPS feed): up to 200 ft Belden 1694A, or equivalent, with an F connector on one end and a BNC connector on the other end. 9–4 TG700 TV Signal Generator Platform Service Manual...
Page 221: Gps7 Black Burst Adjustments
2. Connect the Black 1 output to the multimeter as shown. (See Figure 9-2.) Figure 9-2: Equipment connections for GPS7 adjustments 3. Press the MODULE button to display the GPS7 main menu. TG700 TV Signal Generator Platform Service Manual 9–5...
Page 222 Press the ENTER button to save the setting and exit the offset calibration menu. 6. Move the cable to the next output and repeat steps 3 through 5 for the BLACK 2 and BLACK 3 outputs. 9–6 TG700 TV Signal Generator Platform Service Manual...
Page 223: Mainframe Oscillator Adjustments
Press the right (►) arrow button to select TUNE. d. Check that Fine is showing on the right side of the LCD display. 5. Press the MODULE button until TG700 appears. 6. Press the up (▲) arrow button to select UTILITY.
Page 224 Press the right (►) arrow button to select TUNE. d. Check that Fine is showing on the right side of the LCD display. 8. Press the MODULE button until TG700 appears. 9. Press the up (▲) arrow button to select UTILITY.
Page 225 17. Press the CANCEL button to exit the calibration menu when the calibration is complete. 18. Wait an additional 2 minutes for the loop to fully recover before returning the TG700 to service. TG700 TV Signal Generator Platform Service Manual 9–9...
Page 226: Gps7 Module Maintenance
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. GPS7 Module Removal and Replacement This section contains instructions on how to remove and replace the customer parts of the GPS7 module.
Page 227 When reinstalling, tighten the nut to 14 in/lb. 2. Unplug the RF coaxial cable from P1 on the Trimble GPS Receiver board. 3. Remove the Antenna connector, threading the cable through the rear panel. TG700 TV Signal Generator Platform Service Manual 9–11...
Page 228 6. Remove the four T10 screws that attach the circuit board to the chassis. When reassembling, torque these screws to 8 in/lb. 7. Lift the Main board assembly off of the chassis and set it on a static-free work surface. 9–12 TG700 TV Signal Generator Platform Service Manual...
Page 229: Gps7 Troubleshooting
GPS7 module. These procedures 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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24, TG700 Mainframe Troubleshooting.)
Page 230: Table 9-4: Gps7 Module Troubleshooting
• Frame phase wrong (determined • Verify conﬁguration. (See page 9-17, Verify conﬁguration.) by Performance Veriﬁcation • Check time zone offset conﬁguration and time of day source. See the TG700 User manual • Time of Day wrong for directions. • Check diagnostics reported values. (See page 9-18, Check diagnostic reported values.) •...
Page 231 • Verify timecode is present on the input signal. Use a WFM7120 or WFM8300 waveform monitor. • Verify GPS7 time source select is set to VITC. See the TG700 User manual for directions. • Verify GPS7 time sync method is set as needed. The “Follow” mode is best for troubleshooting purposes.
Page 232: Table 9-5: Post Error Codes
GPS7 Module Maintenance Procedures Power on self test. When you ﬁrst apply power to a TG700, it runs a Power On Self Test (POST). If an error is encountered during this POST the display will show one of several error codes. (See Table 9-5.) Watch the display during boot up and note any error codes.
Page 233 The best way to ensure a common setup is to set both instruments to the factory presets: 1. Press the MODULE button until TG700 appears. 2. Press ENTER to select PRESET. 3. If needed, use the up (▲) or down (▼) arrow buttons to select Recall.
Page 234 Check diagnostic reported values. There are several internally detected physical measurements which are reported by the GPS7 module. Check the following (see the TG700 User manual for detailed procedures). Temperature: Temperature is detected on the Trimble GPS receiver board. This temperature is normally about 15 °C above ambient temperature. If the...
Page 235: Figure 9-3: Gps7 Power Supply Test
Power supply test. There are two types of power supplies in the GPS7 module; those supplied by the TG700 mainframe and those that are derived on the GPS7 from the mainframe supplies. The ones supplied by the mainframe are fused on the GPS7 module;...
Page 236: Table 9-6: Power Supply Test Points
3.30 V to 3.39 V Derived from M+5VA TP0821 BB+1.2V 1.15 V to 1.25 V Derived from M+3.3V TP0421 DO+1.2V 1.15 V to 1.25 V Derived from M+3.3V, test point is under Trimble GPS receiver board 9–20 TG700 TV Signal Generator Platform Service Manual...
Page 237: Figure 9-4: Gps7 Voltage Test Point And Fuse Locations
GPS7 Module Maintenance Figure 9-4: GPS7 voltage test point and fuse locations TG700 TV Signal Generator Platform Service Manual 9–21...
Page 238 2. Verify that the instrument is locked to the GPS signal. 3. Make sure the instrument is in “Fine” mode. 4. Navigate to TG700 Utilities: Oven frequency Calibration. 5. Press the ENTER button to save the current oven tune value.
Page 239 Swap modules and mainframes. If you have other TG700 modules or mainframes available, they can be used to help isolate problems. Swap the GPS7 module into slot 1 of another TG700 mainframe. If the GPS7 module works in that mainframe the problem is in the original mainframe.
Page 240 For example, a 25 μs shift in 10 seconds = 25/10 = a 2.5 ppm error. Go to step 7. Alternate procedure: As an alternative to using a reference TG700/GPS7 unit, you can use a frequency counter to determine the frequency error. 5. Connect the frequency counter to the BLACK 3 output.
Page 241 12. You should see NTSC in the menu. If you do, press the ENTER button. If you do not, press the right (►) arrow button until it appears, and then press the ENTER button. TG700 TV Signal Generator Platform Service Manual 9–25...
Page 242 1. At the same time, press the MODULE, FORMAT, and FRONT PANEL ENABLE buttons brieﬂy, then continue to hold the FRONT PANEL ENABLE button until TG700 Start up with factory mode shows on the display. 2. Connect Black 1 of the reference unit to the Black 1 of the GPS7 module.
Page 243 The normal level is approximately twice the normal video size. Check for clipping or distortion of the signal. If the signal level is not appropriate or there is clipping or distortion, replace the GPS7 module. TG700 TV Signal Generator Platform Service Manual 9–27...
Page 244: Gps7 Module Replaceable Parts List
For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 245: Figure 9-5: Gps7 Replaceable Parts
GPS7 Module Replaceable Parts List Figure 9-5: GPS7 replaceable parts TG700 TV Signal Generator Platform Service Manual 9–29...
Page 246 GPS7 Module Replaceable Parts List 9–30 TG700 TV Signal Generator Platform Service Manual...
Page 247: Hd3G7 Hd 3 Gb/S Sdi Video Generator Module
HD3G7 HD 3 Gb/s SDI Video Generator Module...
Page 249: Hd3G7 Hd 3 Gb/S Sdi Video Generator Theory Of Operation
EAV and SAV info and the required CRCs. The video signals are then scrambled, serialized, and sent at the full 3 Gb/s out of the FPGA to the output boards. TG700 TV Signal Generator Platform Service Manual 10–1...
Page 250: Clocks And Frames
The output board takes two channels from the FPGA serializers and buffers them to drive 75 Ω cable. The output level is set by non-volatile electronic potentiometers on the output board, so the calibration is captured in the board. 10–2 TG700 TV Signal Generator Platform Service Manual...
Page 251: Power Supplies
3.3 V for the processor interface, but the bulk of the 3.3 V used on the board is produced by the switching supply. There are also 1.8 V and 1.2 V supplies, which are used for the memory and FPGA cores. TG700 TV Signal Generator Platform Service Manual 10–3...
Page 252: Requirements For Adjustment
Keithley 2700 DMM Tektronix part number 015-1001-01 6 dB SMA attenuator SMA (male) to BNC (female) Tektronix part number 015-0554-00 adapter Belden 1694, MarkerTek 1694-B-B-3 1 m (3 ft.) BNC to BNC high-bandwidth cable 10–4 TG700 TV Signal Generator Platform Service Manual...
Page 253: Hd3G7 Module Adjustment Procedure
4. Set the DMM to measure AC Volts with a medium ﬁlter, and set the range to display four digits. 5. Record the DMM AC Voltage reading in the SDI Output Amplitude table. (See Table 10-2.) TG700 TV Signal Generator Platform Service Manual 10–5...
Page 254: Table 10-2: Sdi Output Amplitude
Measured direct (μ) (typically 328 mV) 776 mV 824 mV Calculated corrected value Signal 2 amplitude — — — — Measured direct (μ) (typically 328 mV) Calculated corrected value 776 mV 824 mV 10–6 TG700 TV Signal Generator Platform Service Manual...
Page 255 6. On the oscilloscope, select measurement 2, then select pulse amplitude, and then select it to measure Cycle Mean. Record the value in the SDI Output Amplitude table. (See Table 10-2.) 7. Calculate the corrected RMS sine wave amplitude: TG700 TV Signal Generator Platform Service Manual 10–7...
Page 256 3. Connect the 1 m high-bandwidth cable from the HD3G7 Signal 1 output to the TCA75 adapter in the left port of the 80A03. 4. Press the TG700 MODULE button until HD3G7:STATUS appears in the display. 5. If necessary, press the up (▲) or down (▼) arrow buttons to choose CALIBRATION.
Page 257 Before Adjustment column of the SDI Output Amplitude table. (See Table 10-2.) 14. Press the TG700 up (▲) or down (▼) arrow button, and then press the Enter button, to activate the adjustment mode. 15. Press the Clear Data button on the oscilloscope and wait about 5 seconds before proceeding to the next step.
Page 258: Hd3G7 Hd 3 Gb/S Sdi Video Generator Maintenance
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. 10–10...
Page 259: Hd3G7 3 Gb/S Sdi Video Generator Removal And Replacement
Installing a new heat sink. Follow this procedure to install a new heat sink. You will need a new gap pad as well as the heat sink. TG700 TV Signal Generator Platform Service Manual 10–11...
Page 260 4. If necessary, position the outer rear panel over the BNC connectors. 5. Install the three P1 Posidriv ﬂathead screws, from the bottom through the chassis into the heat sink. Torque these screws to 5.0 in/lb. 10–12 TG700 TV Signal Generator Platform Service Manual...
Page 261: Hd3G7 Troubleshooting
3 Gb/s SDI Video 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 the TG700 Mainframe Troubleshooting section in this manual.(See page 1-24, TG700 Mainframe Troubleshooting.)
Page 262: Table 10-4: Equipment Required To Troubleshoot The Hd3G7 Module
ROHS compliant ESD safe soldering The HD3G7 boards do not contain any workstation user-serviceable parts, but any soldering must be ROHS compliant Other TG700 modules Used to test mainframe operation BG7, AVG7, or DVG7 10–14 TG700 TV Signal Generator Platform Service Manual...
Page 263: Table 10-5: Hd3G7 Troubleshooting
Problem Identiﬁcation If there is a problem, ﬁrst perform the HD3G7 Performance Veriﬁcation procedure, found in the TG700 TV Signal Generator Platform Speciﬁcations and Performance Veriﬁcation manual, available on the Web at www.tektronix.com/manuals. Any problems found with that procedure can be a starting point for troubleshooting.
Page 264: Table 10-6: Post Error Codes
HD3G7 HD 3 Gb/s SDI Video Generator Maintenance Procedures Power on self test. When you ﬁrst apply power to a TG700, it runs a Power On Self Test (POST). If an error is encountered during this POST the display will show one of several error codes.
Page 265 Check installed software. Use this procedure to check the installed software versions: 1. Access the Utilities menu. a. From the TG700 main menu, press the up (▲) or down (▼) arrow buttons to select UTILITY. b. Press the ENTER button to enter the utility submenu.
Page 266: Table 10-7: Hd3G7 Module Factory Default Settings
Press the ENTER button to reset the instrument to the factory default settings. Press the CANCEL button to return the TG700 main menu. 3. Check to see if the problem still exists. If the problem has been ﬁxed, compare the settings between the factory default and the user conﬁguration to ﬁnd the issue.
Page 267: Figure 10-3: Hd3G7 Power Supply Test Points
Check power supplies. The module diagnostics check most of the power supplies, but there are two that need manual veriﬁcation. 1. Remove the TG700 top cover. (See page 1-15, Top Cover.) 2. Check the +5 V supply by measuring the voltage at F121, which should be in the range of +4.75 V to +5.25 V.
Page 268 Press the left (◄) or right (►) arrow button to select Factory Default. e. Press the ENTER button to reset the instrument to the factory default settings. Press the CANCEL button to return the TG700 main menu. 4. Verify that both HD3G7 outputs provide a 59.94, 1080p format, 75% color bar signal.
Page 269: Figure 10-4: No_Input_Detect Test Point Location
FRONT PANEL ENABLE button until you see the Startup with Factory Mode message, then release the button. 2. Run the Check module diagnostics routine. (See page 10-16, Check module diagnostics.) TG700 TV Signal Generator Platform Service Manual 10–21...
Page 270: Hd3G7 Hd 3 Gb/S Sdi Video Generator Replaceable Parts List
Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts Ordering Information or Module Servicing in the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31, TG700 Mainframe Replaceable Parts List.) This section contains a list of the replaceable parts and modules for the HD3G7 Generator module.
Page 271: Figure 10-5: Hd3G7 Hd 3 Gb/S Sdi Video Generator – Replaceable Parts
HD3G7 HD 3 Gb/s SDI Video Generator Replaceable Parts List Figure 10-5: HD3G7 HD 3 Gb/s SDI Video Generator – replaceable parts TG700 TV Signal Generator Platform Service Manual 10–23...
Page 272: Figure 10-6: Hd3G7 Main Board – Replaceable Parts
CONTROLLED,TAPE & REEL,5000PCS,PB FREE 131-8270-00 CONN, EDGECARD, PCB, STRAIGHT, FEMALE, SOCKET, 2X20, 40 POS, HIGH SPEED, 0.8MM PITCH, 0.062 BOARD, SMT, SAMTEC MEC8-120-02-L-D-DV -A - K Figure 10-6: HD3G7 main board – replaceable parts 10–24 TG700 TV Signal Generator Platform Service Manual...
Page 273: Hdlg7 Hd Dual Link Video Generator
HDLG7 HD Dual Link Video Generator...
Page 275: Hdlg7 Hd Dual Link Video Generator Theory Of Operation
The Link A Serializer block transforms the selected 20-bit parallel video signal (converted or generated) to a serial digital signal and drives a 75 Ω BNC output. In addition, CRC, line numbers, and payload packet are generated and inserted within this block. TG700 TV Signal Generator Platform Service Manual 11–1...
Page 276: Figure 11-1: Simpliﬁed Block Diagram Of The Hdlg7 Module
(converted or generated) to a serial digital signal and drives a 75 Ω BNC output. In addition, CRC, line numbers, and payload packet are generated and inserted within this block. Figure 11-1: Simpliﬁed block diagram of the HDLG7 module 11–2 TG700 TV Signal Generator Platform Service Manual...
Page 277: Hdlg7 Hd Dual Link Video Generator Maintenance
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. TG700 TV Signal Generator Platform Service Manual...
Page 278: Hdlg7 Hd Dual Link Video Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. 11–4 TG700 TV Signal Generator Platform Service Manual...
Page 279 6. Use a screwdriver with a #2 Phillips tip to install the six screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. TG700 TV Signal Generator Platform Service Manual 11–5...
Page 280: Hdlg7 Hd Dual Link Video Generator Troubleshooting
HDLG7 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 the TG700 Mainframe Troubleshooting section in this manual.(See page 1-24, TG700 Mainframe Troubleshooting.)
Page 281: Troubleshooting Trees
HDLG7 HD Dual Link Video Generator Troubleshooting Troubleshooting Trees Figure 11-2: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 11–7...
Page 282: Figure 11-3: Troubleshooting Procedure (2)
HDLG7 HD Dual Link Video Generator Troubleshooting Figure 11-3: Troubleshooting procedure (2) 11–8 TG700 TV Signal Generator Platform Service Manual...
Page 283: Hdlg7 Hd Dual Link Video Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the HDLG7 module is located in the HDLG7 Theory of Operation section.
Page 284: Hdlg7 Hd Dual Link Video Generator Replaceable Parts List
348-A156-01 GASKET,SHIELD;FINGER TYPE,BE-CU,8.13MM W X 2.79MM H X406.4MM L] 174-5277-00 CABLE,RF,75 OHM;110MM,BNC TO MCX75 211-A245-01 SCREW,MACHINE:M3X6MM L,PNH,STL,NI PL,CROSS REC,W/NUT & amp;LOCK WASHER,TG700,TG700 OPT FP, AG7, AGL7, BG7, DVG7, HDVG7 671-6184-00 CIRCUIT BD ASSY;DUAL LINK GENERATOR/CONVERTER,TESTED,WIRED 389386000 334-1378-03 MARKER,IDENT:MKD SERIAL NO.
Page 285: Figure 11-5: Hdlg7 Module Exploded View
HDLG7 HD Dual Link Video Generator Replaceable Parts List Figure 11-5: HDLG7 module exploded view TG700 TV Signal Generator Platform Service Manual 11–11...
Page 286 HDLG7 HD Dual Link Video Generator Replaceable Parts List 11–12 TG700 TV Signal Generator Platform Service Manual...
Page 287: Hdvg7 Hdtv Digital Video Generator
HDVG7 HDTV Digital Video Generator...
Page 289: Hdvg7 Hdtv Digital Video Generator Theory Of Operation
The serializer converts a 20 bits parallel data to SDI signal. Black Generator (Option This block generates black or gray (40% gray) signal for the BLACK 1 and BLACK 2 outputs. BK Only) TG700 TV Signal Generator Platform Service Manual 12–1...
Page 290: Figure 12-1: Simpliﬁed Block Diagram Of The Hdvg7 Generator Module
HDVG7 HDTV Digital Video Generator Theory of Operation Figure 12-1: Simpliﬁed block diagram of the HDVG7 Generator module 12–2 TG700 TV Signal Generator Platform Service Manual...
Page 291: Hdvg7 Hdtv Digital Video Generator Adjustment Procedures
Preparation To perform the output level adjustment, you must ﬁrst remove the top cover of the TG700 mainframe. (See page 1-15, Top Cover.) After you have removed the top cover, ﬁnd the variable resistors on the HDVG7 circuit board. (See Figure 12-2.) TG700 TV Signal Generator Platform Service Manual 12–3...
Page 292: Figure 12-2: Hdvg7 Circuit Board View
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG700 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG700 mainframe. 1. Use the 75 Ω BNC cable, 75 Ω signal adapter, and SMA-to-BNC adapter to connect the SIGNAL 1 connector on the HDVG7 Generator module to the CH1 input connector on the oscilloscope as shown.
Page 293: Figure 12-3: Equipment Connection For Adjusting The Output Level
Press the left (◄) or right (►) 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.
Page 294 3. Locate the variable resistor R630 on the HDVG7 circuit board. (See Figure 12-3.) 4. Adjust the R630 so that the signal amplitude is equal to the height between the two cursors set in step 6. This completes the output level adjustment procedures. 12–6 TG700 TV Signal Generator Platform Service Manual...
Page 295: Hdvg7 Hdtv Digital Video Generator Maintenance
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. TG700 TV Signal Generator Platform Service Manual...
Page 296: Hdvg7 Hdtv Digital Video Generator Removal And Replacement
3. Use the 14 mm nut driver to remove the nut securing the damaged connector to the chassis. Pull the connector away. 4. Perform steps 2 and 3 in reverse order to replace the connector. 12–8 TG700 TV Signal Generator Platform Service Manual...
Page 297 6. Use a screwdriver with a #2 Phillips tip to install the six screws securing the circuit board to the chassis. 7. Apply the rear panel to the chassis, and then install all the rear-panel connectors to the chassis. TG700 TV Signal Generator Platform Service Manual 12–9...
Page 298: Hdvg7 Hdtv Digital Video Generator 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 the TG700 Mainframe Troubleshooting section in this manual.(See page 1-24, TG700 Mainframe Troubleshooting.)
Page 299: Troubleshooting Trees
HDVG7 HDTV Digital Video Generator Troubleshooting Troubleshooting Trees Figure 12-4: Troubleshooting procedure (1) TG700 TV Signal Generator Platform Service Manual 12–11...
Page 300: Figure 12-5: Troubleshooting Procedure (2)
HDVG7 HDTV Digital Video Generator Troubleshooting Figure 12-5: Troubleshooting procedure (2) 12–12 TG700 TV Signal Generator Platform Service Manual...
Page 301: Hdvg7 Hdtv Digital Video Generator Diagram
TG700 TV Signal Generator Platform. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG700 Diagram section of this manual. (See page 1-28, TG700 Mainframe Diagrams.) A block diagram of the HDVG7 Generator module is located in the HDVG7 Theory of Operation section.
Page 302: Hdvg7 Hdtv Digital Video Generator Replaceable Parts List
INSULATOR,PLATE:HEAT CONDUCTOR,RUBBER, 20MMX20MMX10MM THK [TC1000-TCK] 342-A146-00 INSULATOR,PLATE:HEAT CONDUCTOR,RUBBER, 20MMX20MMX10MM THK [TC1000-TCK] STANDARD ACCESSORIES 075-0986-XX MANUAL,TECH:MODULE INSTALLATION INSTRUCTIONS 063-3939-XX KIT: SOFTWARE LIBRARY, DOCUMENTATION DVD OPTIONAL ACCESSORIES 003-A041-00 NUT DRIVER,BOX:14MM HEX,BNC RETAINING NUT, MODIFIED 19MM 12–14 TG700 TV Signal Generator Platform Service Manual...
Page 303: Figure 12-7: Hdvg7 Generator Module Exploded View
HDVG7 HDTV Digital Video Generator Replaceable Parts List Figure 12-7: HDVG7 Generator module exploded view TG700 TV Signal Generator Platform Service Manual 12–15...
Page 304 HDVG7 HDTV Digital Video Generator Replaceable Parts List 12–16 TG700 TV Signal Generator Platform Service Manual...
Page 305: Sdi7 Dual Channel Sd/Hd/3G Sdivideo Generator
SDI7 Dual Channel SD/HD/3G SDI Video Generator...
Page 307: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generatortheory Of Operation
ﬁle is used to create the test signal. This data stream is combined with the standard test signal stream to add the other required elements and the result is then serialized. TG700 TV Signal Generator Platform Service Manual 13–1...
Page 308: Clocks And Frames
FPGA serializers and buffers them to drive 75 Ω cable. The output level is set by non-volatile electronic potentiometers on the output board, so the calibration is captured in the board. 13–2 TG700 TV Signal Generator Platform Service Manual...
Page 309: Power Supplies
3.3 V for the processor interface, but the bulk of the 3.3 V used on the board is produced by the switching supply. There are also 1.8 V and 1.2 V supplies, which are used for the memory and FPGA cores. TG700 TV Signal Generator Platform Service Manual 13–3...
Page 310: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator Adjustment Procedures
Keithley 2700 DMM Tektronix part number 015-1001-01 6 dB SMA attenuator SMA (male) to BNC (female) Tektronix part number 015-0554-00 adapter Belden 1694, MarkerTek 1694-B-B-3 1 m (3 ft.) BNC to BNC high-bandwidth cable 13–4 TG700 TV Signal Generator Platform Service Manual...
Page 311: Sdi7 Module Adjustment Procedure
6. Set the DMM to measure AC voltage using a medium ﬁlter setting. Set the range to allow for four digits of RMS amplitude. 7. Record the DMM measurement in the SDI output amplitude table. (See Table 13-2 on page 13-8.) TG700 TV Signal Generator Platform Service Manual 13–5...
Page 312 4. On the oscilloscope, select measurement 1 and then pulse amplitude and select it to measure Cycle RMS. 5. On the oscilloscope, select measurement 2 and then pulse amplitude and select it to measure Cycle Mean. 13–6 TG700 TV Signal Generator Platform Service Manual...
Page 313 On the oscilloscope, press the SETUP DIALOG button. b. Select the “Vert” tab from the top of the setup page. c. Select the “External Attenuation” box, and then enter the attenuation factor calculated in step 9 above. TG700 TV Signal Generator Platform Service Manual 13–7...
Page 314: Table 13-2: Sdi Output Amplitude
776 mV 824 mV Measured value (μ) with attenuation Signal 2A amplitude 776 mV 824 mV Measured value (μ) with attenuation Signal 2B amplitude 776 mV 824 mV Measured value (μ) with attenuation 13–8 TG700 TV Signal Generator Platform Service Manual...
Page 315 Adjust the SDI output Use this procedure to adjust the SDI output amplitude: amplitude 1. Start the TG700 in factory mode: a. Press the MODULE, FORMAT, and FRONT PANEL ENABLE buttons simultaneously, then release the MODULE and FORMAT buttons. b. Continue to hold the FRONT PANEL ENABLE button until you see the Startup with Factory Mode message, then release the button.
Page 316 19. Press the TG700 up (▲) or down (▼) arrow button, and then press the Enter button, to activate the adjustment mode. 20. Press the Clear Data button on the oscilloscope and wait about 5 seconds before proceeding to the next step.
Page 317 35. Press the right (►) arrow button to select 20 Bits Square, and then press the ENTER button. 36. Repeat steps 18 through 24 for the Signal 2B output. 37. Cycle the power on the TG700 to return the generator to normal operating mode. TG700 TV Signal Generator Platform Service Manual...
Page 318: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator Maintenance
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. 13–12...
Page 319: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator Removal And Replacement
Main board after the entire circuit board assembly has been removed from the chassis. It may be necessary to clean off parts of the old gap pad from the heat sink and the back of circuit board. TG700 TV Signal Generator Platform Service Manual 13–13...
Page 320 2. Install the ﬁrst SDI Output circuit board (878-0602-xx) into J917 of the Main circuit board, and then install the second into J922. 3. Slide the circuit board assembly onto the chassis, guiding the BNC connectors through the holes in the rear panel. 13–14 TG700 TV Signal Generator Platform Service Manual...
Page 321: Figure 13-2: Sdi7 Main Board Installation
Main board to the heat sink are tightened last (7 and 8). Torque all these screws to 8.0 in/lb. Figure 13-2: SDI7 main board installation The SDI7 module is now ready to install in the mainframe. TG700 TV Signal Generator Platform Service Manual 13–15...
Page 322: Sdi7 Troubleshooting
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 the TG700 Mainframe Troubleshooting section in this manual. (See page 1-24.) Required Equipment The equipment listed here is needed to troubleshoot the SDI7 module.
Page 323: Table 13-5: Sdi7 Troubleshooting
Problem Identiﬁcation If there is a problem, ﬁrst perform the SDI7 Performance Veriﬁcation procedure, found in the TG700 TV Signal Generator Platform Speciﬁcations and Performance Veriﬁcation manual, available on the Web at www.tektronix.com/manuals. Any problems found with that procedure can be a starting point for troubleshooting.
Page 324: Table 13-6: Post Error Codes
SDI7 Dual Channel SD/HD/3G SDI Video Generator Maintenance Procedures Power on self test. When you ﬁrst apply power to a TG700, it runs a Power On Self Test (POST). If an error is encountered during this POST the display will show one of several error codes.
Page 325 “L” indicates stuck low. SRAM Memory Test: Press the ENTER button to start the test. The test takes approximately 60 seconds to complete. If 0 bad sectors detected is not displayed, replace the SDI7 module. TG700 TV Signal Generator Platform Service Manual 13–19...
Page 326 Check installed software. Use this procedure to check the installed software versions: 1. Access the Utilities menu. a. From the TG700 main menu, press the up (▲) or down (▼) arrow buttons to select UTILITY. b. Press the ENTER button to enter the utility submenu.
Page 327: Table 13-7: Sdi7 Module Factory Default Settings
Press the ENTER button to reset the instrument to the factory default settings. Press the CANCEL button to return the TG700 main menu. 3. Check to see if the problem still exists. If the problem has been ﬁxed, compare the settings between the factory default and the user conﬁguration to ﬁnd the issue.
Page 328 8.0 % APH OVERLAY : CIRCLE Status Disable X Position 0.0 % APW Y Position 0.0 % APH Diameter 90.0 % APH OVERLAY : BLINK Text/Circle Blink OVERLAY : BORDER Text/Circle Border Enable 13–22 TG700 TV Signal Generator Platform Service Manual...
Page 329 TIMING Vertical 0 Line(s) Horizontal 0.0000 μs Relative To Serial (0H) TIMECODE Source Program Time 30 Drop Frame Enable ATC-LTC ATC-VITC VIDEO Edge Filter Enable AV Timing Mode (SD output mode only) TG700 TV Signal Generator Platform Service Manual 13–23...
Page 330 Check power supplies. The module diagnostics check most of the power supplies, but there are two that need manual veriﬁcation. 1. Remove the TG700 top cover. (See page 1-15, Top Cover.) 2. Check the +5 V supply by measuring the voltage at F121, which should be in the range of +4.75 V to +5.25 V.
Page 331: Figure 13-3: Sdi7 Power Supply Test Points
Press the ENTER button to reset the instrument to the factory default settings. Press the CANCEL button to return the TG700 main menu. 4. Verify that all four SDI7 signal outputs (SIGNAL 1A, SIGNAL 1B, SIGNAL 2A, and SIGNAL 2B) are set to provide a 59.94, 1080i format, 100% color bar signal (factory default signal).
Page 332 FRONT PANEL ENABLE button until you see the Startup with Factory Mode message, then release the button. 2. Run the Check module diagnostics routine. (See page 13-18, Check module diagnostics.) 13–26 TG700 TV Signal Generator Platform Service Manual...
Page 333 1. Press the front-panel MODULE button until the mainframe main menu is displayed as shown below. 2. Press the up (▲) or down (▼) arrow button until TG700 : UTILITY is displayed, and then press the ENTER button. 3. Press the up (▲) or down (▼) arrow button until TG700 : UTILITY : OPTIONS ENABLED is displayed.
Page 334 1. If necessary, install the TGComm application on your PC. You can install the software from the TG700 SW Library and Documentation DVD that was shipped with the instrument or from the Tektronix Web site (www.tektronix.com/software). 2. Use the TGComm application to download one of the sample frame pictures from the TG700 SW Library and Documentation DVD.
Page 335: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator Replaceable Parts List
This section contains a list of the replaceable modules for the SDI7 module. Use this list to identify and order replacement parts. For parts ordering or servicing information, refer to the TG700 Mainframe Replaceable Parts List section of this manual. (See page 1-31.) This section contains a list of the replaceable parts and modules for the SDI7 module.
Page 336: Figure 13-4: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator – Replaceable Parts
SDI7 Dual Channel SD/HD/3G SDI Video Generator Replaceable Parts List Figure 13-4: SDI7 Dual Channel SD/HD/3G SDI Video Generator – replaceable parts 13–30 TG700 TV Signal Generator Platform Service Manual...
Page 337: Figure 13-5: Sdi7 Main Board – Replaceable Parts
Name & description 10-6-1 159-5022-00 FUSE; 5.0A,125V;FAST BLOW,0.1 X 0.1 X 0.24,UL REG,CSA CERT;451005,SAFETY CONTROLLED 159-0463-00 FUSE; SMD:2A,32V,FAST ACTING,0.024 OHM,0603 SIZE,UL/CSA REG,SAFETY CONTROLLED,TAPE & REEL,5000PCS,PB FREE Figure 13-5: SDI7 main board – replaceable parts TG700 TV Signal Generator Platform Service Manual 13–31...

Tektronix TG700 Service Manual

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