Download Print this page

Tektronix TG8000 Service Manual

Tektronix TG8000 Service Manual

Multiformat test signal generator

Hide thumbs Also See for TG8000:

User manual (498 pages)

,

Programmer's manual (200 pages)

,

Technical reference (41 pages)

Table of Contents

Advertisement

Quick Links

Download this manual See also: Instruction Manual, User Manual

xx

TG8000

Multiformat Test Signal Generator

ZZZ

Service Manual

*P077068700*

077-0687-00

Table of Contents

Advertisement

Chapters

Table of Contents

Troubleshooting

Need help?

Need help?

Do you have a question about the TG8000 and is the answer not in the manual?

Questions and answers

Summary of Contents for Tektronix TG8000

Page 1 TG8000 Multiformat Test Signal Generator Service Manual *P077068700* 077-0687-00...
Page 3 TG8000 Multiformat Test Signal Generator Service Manual www.tektronix.com 077-0687-00...
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
Product documentation..................Service basics Service introduction ....................Performance check interval................. Strategy for servicing..................Tektronix service offerings ................. Module compatibility between the TG8000 and TG700 mainframes........Product maintenance ..................... Service preparation ..................Inspection and cleaning ..................Module installation and removal................1-10 To install a module..................
Page 8 AGL7 module theory of operation................4-12 Analog genlock .................... 4-12 Black burst generator..................4-12 AGL7 module interconnect diagram ................. 4-14 AGL7 module troubleshooting................4-15 Required equipment ..................4-15 To back up the instrument settings............... 4-15 TG8000 Multiformat Test Signal Generator Service Manual...
Page 9 To conﬁrm the interchannel delay ............... 6-18 AVG7 module theory of operation................6-19 AVG7 module interconnect diagram ................. 6-21 AVG7 module troubleshooting................6-22 Required equipment ..................6-22 To back up the instrument settings............... 6-22 TG8000 Multiformat Test Signal Generator Service Manual...
Page 10 8-10 To back up the instrument settings............... 8-10 BG7 module troubleshooting trees............... 8-11 BG7 module removal and replacement ..............8-13 Required tools ....................8-13 How to replace the rear-panel connectors and chassis..........8-14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 11 GPS7 module removal and replacement ..............10-23 Required tools ..................... 10-23 To remove the GPS7 module ................10-24 To replace the Antenna Power indicator (light pipe)..........10-24 How to replace the rear-panel connectors and chassis ..........10-24 TG8000 Multiformat Test Signal Generator Service Manual...
Page 12 To back up the instrument settings............... 12-5 HDLG7 module troubleshooting trees ..............12-6 HDLG7 module removal and replacement ..............12-8 Required tools ....................12-8 How to replace the rear-panel connectors and chassis..........12-9 TG8000 Multiformat Test Signal Generator Service Manual...
Page 13 Troubleshooting procedures ................14-15 SDI7 module removal and replacement..............14-27 Required tools ..................... 14-27 To remove the SDI7 module................14-27 To disassemble the SDI7 module ............... 14-27 To reassemble the SDI7 module ................ 14-28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 14 Table of Contents SDI7 module replaceable parts list ................14-30 viii TG8000 Multiformat Test Signal Generator Service Manual...
Page 15 Figure 4-6: AGL7 module interconnect diagram ............4-14 Figure 4-7: AGL7 module troubleshooting procedure (1) ..........4-16 Figure 4-8: AGL7 module troubleshooting procedure (2) ..........4-17 Figure 4-9: Dressing the AGL7 module BNC cables ............4-19 TG8000 Multiformat Test Signal Generator Service Manual...
Page 16: Figure 4-2: Equipment Connection For Adjusting The Output Offset And Gain
Figure 8-3: Equipment connection for adjusting chroma gain ..........Figure 8-4: Triggered display for adjusting the BG7 module chroma gain ........ Figure 8-5: Simpliﬁed block diagram of the BG7 module........... Figure 8-6: BG7 module interconnect diagram ............... TG8000 Multiformat Test Signal Generator Service Manual...
Page 17 Figure 14-2: SDI7 power supply test points..............14-22 Figure 14-3: SDI7 module main board installation ............14-29 Figure 14-4: SDI7 module – replaceable parts ............. 14-31 Figure 14-5: SDI7 module main board – replaceable parts ..........14-32 TG8000 Multiformat Test Signal Generator Service Manual...
Page 18 2-42 Table 2-11: Blank panel replaceable parts ..............2-44 Table 2-12: Standard and optional accessories for TG8000 mainframe........2-45 Table 3-1: Equipment required to troubleshoot the AG7 module ........... Table 3-2: Required tools for removal and replacement of AG7 module ........
Page 19 Table 14-7: Required tools for SDI7 module removal and replacement ........ 14-27 Table 14-8: SDI7 module – replaceable parts .............. 14-30 Table 14-9: SDI7 module main board – replaceable parts ..........14-32 TG8000 Multiformat Test Signal Generator Service Manual xiii...
Page 20: Important Safety Information
To avoid electric shock, the grounding conductor must be connected to earth ground. Before making connections to the input or output terminals of the product, make sure that the product is properly grounded. TG8000 Multiformat Test Signal Generator Service Manual...
Page 21 Improper or prolonged keyboard or pointer use may result in serious injury. Be sure your work area meets applicable ergonomic standards. Consult with an ergonomics professional to avoid stress injuries. Use only the Tektronix rackmount hardware speciﬁed for this product. TG8000 Multiformat Test Signal Generator Service Manual...
Page 22: Service Safety Summary
Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair. TG8000 Multiformat Test Signal Generator Service Manual...
Page 23: Terms In This Manual
ﬁnd out the nature of the potential hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to ratings in the manual.) The following symbol(s) may appear on the product: TG8000 Multiformat Test Signal Generator Service Manual xvii...
Page 24 Important safety information xviii TG8000 Multiformat Test Signal Generator Service Manual...
Page 25: Preface
Preface This manual contains information needed to service a TG8000 Multiformat Test Signal Generator and its associated modules to the module level. Manual structure This manual is divided into sections. Each section contains information about the mainframe or a module. Further, sections are divided into subsections.
Page 26: 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 TG8000 front panel and menus.
Page 27: Product Documentation
Preface Product documentation The following table lists the user documents for the TG8000 and its related modules: Table i: TG8000 Multiformat Test Signal Generator documentation Availability Document Tektronix Part Number Description Print User Manual 071-3036-xx (English) Describes how to install, operate, and conﬁgure the instrument...
Page 28 Preface xxii TG8000 Multiformat Test Signal Generator Service Manual...
Page 29: Service Basics
Service basics...
Page 31: Service Introduction
Performance Veriﬁcation Technical Reference manual should be done every 12 months. In addition, a performance check is recommended after repair. If the TG8000 mainframe or any installed product modules do not meet performance criteria, repair is necessary. TG8000 Multiformat Test Signal Generator Service Manual...
Page 32: Strategy For Servicing
TG8000 and the latest new options. Warranty repair service Tektronix warrants this product for one year from date of purchase. The warranty appears after the title page in this manual. Tektronix technicians provide warranty service at most Tektronix service locations. The Tektronix product catalog lists all worldwide service locations or you can visit our Web site for service information: www.tektronix.com.
Page 33: Module Compatibility Between The Tg8000 And Tg700 Mainframes
Service introduction Module compatibility between the TG8000 and TG700 mainframes Each of the modules that was designed to operate in the Tektronix TG700 TV Signal Generator Platform will also operate in the TG8000 mainframe. GPS7 module. The adjustment of the mainframe oscillator depends on the...
Page 34: Product Maintenance
Product maintenance Product maintenance The following information applies to the TG8000 mainframe and all of its associated generators and modules. Before you perform maintenance procedures on the product, read the following information in this section: Service preparation (See page 1-4.) Inspection and cleaning (See page 1-6.)
Page 35 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. TG8000 Multiformat Test Signal Generator Service Manual 1–5...
Page 36: Inspection And Cleaning
Avoid the use of chemical cleaning agents that might damage the plastics used in this instrument. Use only deionized water when cleaning the menu buttons or front-panel buttons. Use an ethyl alcohol solution as a cleaner and rinse with deionized water. 1–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 37: Table 1-1: External Inspection Checklist
3. Clean the light ﬁlter protecting the monitor screen with a lint-free cloth dampened with a gentle, general purpose detergent-and-water solution. CAUTION. To prevent getting moisture inside the instrument during external cleaning, use only enough liquid to dampen the cloth or applicator. TG8000 Multiformat Test Signal Generator Service Manual 1–7...
Page 38: Table 1-2: Internal Inspection Checklist
Loose plugs or connectors. Firmly seat connectors. Burned, broken, or frayed Repair or replace modules wiring. with defective wires or cables. Chassis Dents, deformations, and Straighten, repair, or replace damaged hardware. defective hardware. 1–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 39 7. Dry all parts with low-pressure, deionized air. 8. Dry all components and assemblies in an oven or drying compartment using low-temperature circulating air. Lubrication. There is no periodic lubrication required for the TG8000. TG8000 Multiformat Test Signal Generator Service Manual 1–9...
Page 40: Module Installation And Removal
Module installation and removal The following procedures describe how to install and remove generator, genlock, and GPS modules from the TG8000 mainframe. A screwdriver with a #1 Phillips tip is the only tool you need to install or remove a module.
Page 41: To Install A Module
For AGL7 and GPS7 modules, only one of these modules can be installed in the TG8000 mainframe at a time, and it must be installed only in slot 1. All other modules may be installed in any slot location.
Page 42: Figure 1-2: Removing The Blank Panel
(See page 1-14, To remove a module.) Figure 1-2: Removing the blank panel CAUTION. Be careful not to damage the parts and cables inside of the module when you insert the module into the mainframe. 1–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 43: Figure 1-3: Installing A Module
ﬁrmly engaged with the Main board of the mainframe. Figure 1-3: Installing a module 5. Tighten the two screws to secure the module to the mainframe. (See Figure 1-4.) Figure 1-4: Securing a module TG8000 Multiformat Test Signal Generator Service Manual 1–13...
Page 44: To Remove A Module
4. Pull the module slowly toward you while supporting the terminations or BNC cables attached to the connectors. (See Figure 1-5.) For the Power Supply module, use the loop handle to remove the module. 1–14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 45: Figure 1-5: Removing A Module
A blank panel is available as an optional accessory for the TG8000 mainframe. 6. If you want to install another module into the slot from which the module is removed, perform To install a Module starting at step 4. (See page 1-11.) TG8000 Multiformat Test Signal Generator Service Manual 1–15...
Page 46: Repacking 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. 1–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 47: Tg8000 Mainframe
TG8000 mainframe...
Page 49: Mainframe Service Overview
GPS, or Power Supply module from the TG8000 mainframe. (See page 1-10.) Mainframe service The service information for the TG8000 mainframe is divided into the following subsections: information Mainframe clock adjustment addresses after repair adjustment and the interval between periodic adjustments.
Page 50: Mainframe Clock Adjustment
Mainframe clock adjustment Mainframe clock adjustment The only adjustment in the TG8000 mainframe is for the frequency of the master clock oscillator. There are two methods for adjusting the frequency of the master clock. You can use a frequency signal generator or you can use a GPS7 module by locking the master clock to a GPS signal.
Page 51: Figure 2-1: Equipment Connection For Adjusting The Master Clock Frequency Using A Frequency
ﬁgure. NOTE. You can use a Tektronix TG700 or TG8000 signal generator with a GPS7 module installed to produce the 10 MHz frequency standard. In this case, ensure that the GPS7 module is locked to a GPS signal in ﬁne mode.
Page 52 ENTER button. d. Press the BACK button to return to the AGL7 main menu. 6. Press the MODULE button until TG8000 : PRESET is displayed. 7. Press the up (▲) or down (▼) arrow button to select UTILITY, and then press the ENTER button to access the UTILITY submenu.
Page 53: To Adjust The Master Clock Using An Installed Gps7 Module
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 TG8000 : PRESET appears. 6. Press the up (▲) or down (▼) arrow button to select UTILITY, and then press the ENTER button to access the UTILITY submenu.
Page 54 ENTER button to exit the calibration mode. 10. Verify the calibration: a. Press the MODULE button until TG8000 : PRESET appears. b. Press the up (▲) or down (▼) arrow button to select UTILITY, and then press the ENTER button to access the UTILITY submenu.
Page 55: Mainframe Theory Of Operation
The frame pulse generator uses the 54 MHz clock to generate the three frame pulses at 2.997 Hz, 6.25 Hz, and 3.00 Hz that are used to synchronize the signal formats generated by the installed modules. TG8000 Multiformat Test Signal Generator Service Manual 2–7...
Page 56: Power Supply Module
Mainframe theory of operation Slot connectors Each slot connector provides the interface between the TG8000 mainframe and an installed module. The slot connector provides CPU related signals such as data bus and address bus, clock signals, power, and other control signals to the modules.
Page 57: Mainframe Diagram
Mainframe diagram Mainframe diagram This section contains the Block diagram of the TG8000 mainframe. The block diagram shows the modules and functional blocks in the instrument. Figure 2-2: TG8000 block diagram TG8000 Multiformat Test Signal Generator Service Manual 2–9...
Page 58: Mainframe Troubleshooting
Mainframe troubleshooting Mainframe troubleshooting This section contains information about how to troubleshoot instrument problems in order to isolate faulty modules in the TG8000 mainframe. Diagnostics and performance checks Before attempting to troubleshoot an instrument problem, it is recommended that you perform the performance veriﬁcation procedures for the TG8000 mainframe and all installed modules.
Page 59 GPS and the Tune is more that 0.1 e-6, then you should consider calibrating the internal frequency of the instrument. This can be done in service with no disruption to the operation. See the TG8000 User Manual for instructions.
Page 60 Mainframe troubleshooting I/O slot tests Run this test to verify that each TG8000 module slot is functioning. You will need a GPS7 Synchronization and Timecode module to perform this test. 1. Install the GPS7 module into slot 1 of the TG8000 mainframe.
Page 61: Table 2-3: Slot Diagnostics Error Codes
The address walking zeros and ones This likely means that the CS4* signal is open or shorted. This could also tests failed completely mean that chip select 6 (CS6x*) is stuck low. TG8000 Multiformat Test Signal Generator Service Manual 2–13...
Page 62 127 (0x7F) times. The Frame FPGA on the mainboard counts number of high going pulses it receives on FRAME_OUT. If the number is zero, there is likely an open circuit between the slot connector and the Frame FPGA on the FRAME_OUT signal. 2–14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 63: Figure 2-3: Slot Diagnostics Test Points On The Gps7 Module
Figure 2-3: Slot diagnostics test points on the GPS7 module TG8000 Multiformat Test Signal Generator Service Manual 2–15...
Page 64: Table 2-4: Mainframe Troubleshooting Procedures
The 21 Voltage pages show voltages on various supplies and fuses; all should indicate “OK”. The fan speed varies from about 5800 at low temperatures to 12,500 at high temperatures. 5. Repair or replace boards or component as needed to address any issues found. 2–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 65 In Factory mode, run the PLL Range Check from the mainframe diagnostics (perform the common diagnostic tests in the TG8000 Speciﬁcations and Performance Veriﬁcation Technical Reference manual. Verify that all the secondary clocks can tune at least ±90e -6. If not, then replace the Main board.
Page 66: Figure 2-4: Main Board (View From Top)
Mainframe troubleshooting Figure 2-4: Main board (view from top) 2–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 67: Mainframe Removal And Installation Procedures
A disassembly procedure for removal of all the major modules from the TG8000 at one time and for reassembly of those modules into the TG8000. Such a complete disassembly is normally only done when completely cleaning the TG8000. Instructions for doing the actual cleaning are found under Inspection and cleaning at the beginning of this section.
Page 68: Table 2-5: Tools Required For Module Removal
Equipment required Many of the modules in the TG8000 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 69: Figure 2-5: Tg8000 Orientation
Mainframe removal and installation procedures TG8000 orientation In this manual, procedures refer to "front," "rear," "top," etc. of the TG8000. The following ﬁgure shows how the sides are referenced. Figure 2-5: TG8000 orientation TG8000 Multiformat Test Signal Generator Service Manual...
Page 70: Figure 2-6: Top Cover, Line Cord, And Front Panel Assembly
Mainframe removal and installation procedures TG8000 modules The following ﬁgures show the location of the replaceable modules in the TG8000 mainframe. Figure 2-6: Top cover, line cord, and Front Panel assembly 2–22 TG8000 Multiformat Test Signal Generator Service Manual...
Page 71: Figure 2-7: Mainframe, Main Board, And Power Supply Module
Mainframe removal and installation procedures Figure 2-7: Mainframe, Main board, and Power Supply module TG8000 Multiformat Test Signal Generator Service Manual 2–23...
Page 72: Access Procedure
1. Assemble the equipment and locate the line cord: You need no equipment. Locate the line cord in the locator diagram. (See Figure 2-6.) 2. Orient the instrument: Set the TG8000 so its bottom is down on the work surface and its rear is facing you.
Page 73: Top Cover
#1 tip and others require a #2 tip. b. Locate the top cover in the locator diagram. (See Figure 2-6 on page 2-22.) 2. Orient the instrument: Set the TG8000 so that its bottom is down on the work surface and its rear is facing you.
Page 74: Front Panel Assembly
This will prevent the Front Panel assembly from moving and damaging the USB connector. a. Set the TG8000 so that its top is down on the work surface and its front is facing you. b. Use a screwdriver with a #2 Phillips tip to remove the four screws securing the Front Panel assembly to the bottom of the mainframe.
Page 75: Figure 2-10: Removing The Front Panel Assembly
Mainframe removal and installation procedures Figure 2-10: Removing the Front Panel assembly TG8000 Multiformat Test Signal Generator Service Manual 2–27...
Page 76: Front Panel Subassemblies
Lift the board away. c. To remove the keypad from the board, carefully pull up on the keypad. There are eight tails from the keypad that extend through to the back side of the board. 2–28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 77: Figure 2-11: Disassembling The Front Panel Assembly
Front Panel assembly. 8. Reinstallation: Perform steps 2 through 7 in reverse order to reassemble and reinstall the Front Panel assembly. Torque all screws to 5.5 in/lbs. Figure 2-11: Disassembling the Front Panel assembly TG8000 Multiformat Test Signal Generator Service Manual 2–29...
Page 78: Power Supply Module Subassemblies
2. Remove the Power Supply module: The Power Supply module is removed from the TG8000 mainframe like any of the generator modules. You can use the loop handle on the supply for easy removal. (See page 1-14, To remove a module.)
Page 79: Figure 2-12: Installing The Fan
Perform steps 2 through 6 in reverse order to reassemble and reinstall the Power Supply module. When replacing the fan, be sure to install the fan bracket with EMI clip as shown below. Figure 2-12: Installing the fan TG8000 Multiformat Test Signal Generator Service Manual 2–31...
Page 80: Figure 2-13: Removing The Lan Board, Fan, And Rfi Filter From The Power Supply Module
Mainframe removal and installation procedures Figure 2-13: Removing the LAN board, fan, and RFI ﬁlter from the Power Supply module 2–32 TG8000 Multiformat Test Signal Generator Service Manual...
Page 81: Main Board
3. Remove the Power Supply module: (See page 2-30, Power Supply module subassemblies.) 4. Orient the instrument: Set the TG8000 so its bottom is down on the work surface and its right side is facing you. 5. Remove the Main board: (See Figure 2-14.) a.
Page 82: Figure 2-14: Main Board Removal
Mainframe removal and installation procedures Figure 2-14: Main board removal 2–34 TG8000 Multiformat Test Signal Generator Service Manual...
Page 83: Mainframe Replaceable Parts List
Mainframe replaceable parts list Mainframe replaceable parts list This section contains a list of the replaceable modules for the TG8000 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 84: 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 85: Figure 2-15: Mainframe Replaceable Parts
THUMBSCREW; 10-32 X 0.85, 0.375 OD HD, ZINC PLATED STEEL, W/SLOT 650-5546-00 FRONT PANEL ASSY, TG8000 The Front Panel assembly has replaceable subparts. (See Figure 2-17 on page 2-41.) Figure 2-15: Mainframe replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 2–37...
Page 86: Table 2-8: Chassis Assembly Replaceable Parts
FUSE; 3.0A, 125V, FAST BLOW, 0.1 X 0.1 X 0.24, UL REG, CSA CERT, SAFETY CONTROLLED 159-5022-00 FUSE; 5.0A, 125V; FAST BLOW, 0.1 X 0.1 X 0.24, UL REG, CSA CERT; 451005, SAFETY CONTROLLED 2–38 TG8000 Multiformat Test Signal Generator Service Manual...
Page 87: Figure 2-16: Chassis Assembly Replaceable Parts
Mainframe replaceable parts list Figure 2-16: Chassis assembly replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 2–39...
Page 88: Table 2-9: Front Panel Assembly Replaceable Parts
CONTACT, ELEC; EMI, CLIP-ON, 0.38 L X 0.460 W (2 CONTACTS) X 0.45 HIGH, ELECTROLESS NICKEL PLATE 878-0649-00 CIRCUIT BOARD ASSY; FRONT PANEL, UNTESTED 260-2951-00 SWITCH KEYPAD (ELASTOMERIC MAT, TG8000), SAFETY CONTROLLED 2–40 TG8000 Multiformat Test Signal Generator Service Manual...
Page 89: Figure 2-17: Front Panel Assembly Replaceable Parts
Mainframe replaceable parts list Figure 2-17: Front Panel assembly replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 2–41...
Page 90: Table 2-10: Power Supply Assembly Replaceable Parts
2-18- 650-5544-00 POWER SUPPLY ASSY, TG8000 Subparts 441-2706-00 CHASSIS, POWER SUPPLY, ASSY TG8000, SAFETY CONTROLLED 211-A245-01 SCREW, MACHINE; M3 X 6 MM L, PNH, STL, NI PL, CROSS REC, W/NUT & LOCK WASHER 878-0685-00 CIRCUIT BOARD ASSY; POWER ADAPTER BOARD, UNTESTED 119-B054-00 POWER SUPPLY;...
Page 91: Figure 2-18: Power Supply Assembly Replaceable Parts
Mainframe replaceable parts list Figure 2-18: Power Supply assembly replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 2–43...
Page 92: Figure 2-19: Blank Panel Replaceable Parts
SCREW, MACHINE; M2.5, PITCH 0.45MM, LENGTH 11MM, HEAD DIA 5MM, HEAD HEIGHT 2MM, BRIGHT NICKEL FINISH STEEL, SLOTTED PHILLIPS 348-A156-01 GASKET, SHIELD; FINGER TYPE, BE-CU, 8.13MM W X 2.79MM H X 406.4MM L Figure 2-19: Blank panel replaceable parts 2–44 TG8000 Multiformat Test Signal Generator Service Manual...
Page 93: Table 2-12: Standard And Optional Accessories For Tg8000 Mainframe
Mainframe replaceable parts list Table 2-12: Standard and optional accessories for TG8000 mainframe Component Tektronix part Serial no. Serial no. number number effective discont'd Name & description STANDARD ACCESSORIES 351-1137-00 RACK, KIT, RAILS 063-4440-XX DVD, TG700 & TG8000 SOFTWARE LIBRARY & DOCUMENTATION...
Page 94 Mainframe replaceable parts list 2–46 TG8000 Multiformat Test Signal Generator Service Manual...
Page 95: Ag7 Audio Generator Module
AG7 Audio Generator module...
Page 97: Ag7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the AG7 Audio Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the AG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 98: Ag7 Module 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 3-1: Simpliﬁed block diagram of the AG7 module 3–2 TG8000 Multiformat Test Signal Generator Service Manual...
Page 99: Ag7 Module Interconnect Diagram
TG8000 mainframe. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the TG8000 mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the AG7 module is located in the AG7 module theory of operation section.
Page 100: Ag7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the TG8000 mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 101: Ag7 Module Troubleshooting Trees
AG7 module troubleshooting AG7 module troubleshooting trees Figure 3-3: AG7 module troubleshooting procedure (1) TG8000 Multiformat Test Signal Generator Service Manual 3–5...
Page 102: Figure 3-4: Ag7 Module Troubleshooting Procedure (2)
AG7 module troubleshooting Figure 3-4: AG7 module troubleshooting procedure (2) 3–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 103: Ag7 Module Removal And Replacement
Phillips-driver bit for #1 size screw heads #2 Phillips tip Phillips-driver bit for #2 size screw heads Nut driver, 11 mm Special nut driver for removing the BNC 003-A042-00 connectors of the AG7 module TG8000 Multiformat Test Signal Generator Service Manual 3–7...
Page 104: How To Replace The Rear-Panel Connectors And Chassis
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. 3–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 105: Ag7 Module Replaceable Parts List
This section contains a list of the replaceable modules for the AG7 module. Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts ordering information or Module servicing in the TG8000 mainframe replaceable parts list section of this manual. (See page 2-35.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 106: Figure 3-5: Ag7 Module Exploded View
MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION OPTIONAL ACCESSORIES 003-A042-00 NUT DRIVER, BOX: 11 MM HEX, BNC RETAINING NUT, MODIFIED 14.5 MM Figure 3-5: AG7 module exploded view 3–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 107: Agl7 Analog Genlock Module
AGL7 Analog Genlock module...
Page 109: Agl7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the AGL7 Analog Genlock module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the AGL7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 110: Agl7 Module Adjustment Procedures
Access When adjusting the output offset, output gain, and clock timing, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) Required equipment The following table lists the equipment required to adjust the output offset, output gain, and clock timing.
Page 111: To Adjust The Output Offset And Gain
Preparation To perform the output offset and gain adjustment, you must ﬁrst remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) After you have removed the top cover, ﬁnd the variable resistors on the AGL7 circuit board. See the following ﬁgure.
Page 112 WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial terminator, and...
Page 113 AGL7 Genlock module. 10. Locate variable resistor R591 on the AGL7 circuit board. (See Figure 4-1.) 11. Adjust R591 so that the output offset is 0 V ±1 mV. TG8000 Multiformat Test Signal Generator Service Manual 4–5...
Page 114 AGL7 Genlock module. 19. Locate variable resistor R581 on the AGL7 circuit board. (See Figure 4-1.) 20. Adjust R581 so that the output gain is 700 mV ±1 mV. 4–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 115: To Adjust The Clock Timing (Older Versions Only)
Preparation To perform the clock timing adjustment, you must ﬁrst remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) After you have removed the top cover, ﬁnd the variable resistors on the AGL7 module circuit board. (See Figure 4-3.)
Page 116 WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 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 117 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 TG8000 Multiformat Test Signal Generator Service Manual 4–9...
Page 118: Figure 4-4: 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. 4–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 119 +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. TG8000 Multiformat Test Signal Generator Service Manual 4–11...
Page 120: Agl7 Module Theory Of Operation
The "D/A Converter & Amp 3" also has a wide bandwidth ﬁlter for the HDTV trilevel sync signal. 4–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 121: Figure 4-5: Simpliﬁed Block Diagram Of The Agl7 Module
AGL7 module theory of operation Word clock generator This block generates a 48 kHz word clock signal. Figure 4-5: Simpliﬁed block diagram of the AGL7 module TG8000 Multiformat Test Signal Generator Service Manual 4–13...
Page 122: Agl7 Module Interconnect Diagram
AGL7 module interconnect diagram The following ﬁgure shows the AGL7 module and how it interconnects with the TG8000 mainframe. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the AGL7 module is located in the AGL7 module theory of operation section.
Page 123: Agl7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the TG8000 mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 124: Agl7 Module Troubleshooting Trees
AGL7 module troubleshooting AGL7 module troubleshooting trees Figure 4-7: AGL7 module troubleshooting procedure (1) 4–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 125: Figure 4-8: Agl7 Module Troubleshooting Procedure (2)
AGL7 module troubleshooting Figure 4-8: AGL7 module troubleshooting procedure (2) TG8000 Multiformat Test Signal Generator Service Manual 4–17...
Page 126: Agl7 Module Removal And Replacement
How to replace the rear-panel connectors and chassis It is usually not necessary to replace the rear-panel connectors or chassis. However, if a connector or chassis becomes damaged, you can replace it. 4–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 127: Figure 4-9: Dressing The Agl7 Module Bnc Cables
Align the CW cable as shown below to prevent the connector from hitting the chassis during module installation or removal. Figure 4-9: Dressing the AGL7 module BNC cables TG8000 Multiformat Test Signal Generator Service Manual 4–19...
Page 128 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. 4–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 129: Agl7 Module Replaceable Parts List
This section contains a list of the replaceable modules for the AGL7 module. Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts ordering information or Module servicing in the TG8000 mainframe replaceable parts list section of this manual. (See page 2-35.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 130 AGL7 module replaceable parts list Figure 4-10: AGL7 module exploded view 4–22 TG8000 Multiformat Test Signal Generator Service Manual...
Page 131: Atg7 Analog Test Generator Module
ATG7 Analog Test Generator module...
Page 133: Atg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the ATG7 Analog Test Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the ATG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 134: Atg7 Module Adjustment Procedures
Access When adjusting the blanking, luminance, and chrominance levels, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) Required equipment The following table lists the equipment required to adjust the output offset, output gain, and chroma gain.
Page 135: To Adjust The Output Offset And Gain
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 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 ATG7 module to the input connector on the digital multimeter.
Page 136 ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 3. Select the DAC Offset (0 V DC) calibration signal for the outputs as follows: a.
Page 137 24. Change the BNC cable connection from the SIGNAL connector to the BARS connector on the ATG7 module. 25. Locate variable resistor R781 on the ATG7 circuit board. (See Figure 5-1.) 26. Adjust R781 so that the output gain is 700 mV ±1 mV. TG8000 Multiformat Test Signal Generator Service Manual 5–5...
Page 138: To Adjust Chroma Gain
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable to connect the SIGNAL connector on the ATG7 Generator module to the CH 1 connector on the oscilloscope.
Page 139 5 mV / div. 5. Locate the ﬂat bar followed by the burst packets for yellow and cyan as shown below. Figure 5-4: Triggered display for adjusting the ATG7 module chroma gain TG8000 Multiformat Test Signal Generator Service Manual 5–7...
Page 140 ATG7 module. 9. Locate variable resistor R977 on the ATG7 circuit board. (See Figure 5-1.) 10. Adjust R977 to match the ﬁrst chroma packet to the level of the preceding 75% ﬂat bar. 5–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 141: Atg7 Module Theory Of Operation
This block consists of a D/A converter, two ampliﬁers, and a ﬁlter. It converts the digital data from the black burst generator, BARS generator, and SIGNAL generator to analog signal and reconstruct the signal for output. Figure 5-5: Simpliﬁed block diagram of the ATG7 module TG8000 Multiformat Test Signal Generator Service Manual 5–9...
Page 142: Atg7 Module Interconnect Diagram
Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the ATG7 module is located in the ATG7 module theory of operation section. (See page 5-9.) Figure 5-6: ATG7 module interconnect diagram 5–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 143: Atg7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the TG8000 mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 144: Atg7 Module Troubleshooting Trees
ATG7 module troubleshooting ATG7 module troubleshooting trees Figure 5-7: ATG7 module troubleshooting procedure (1) 5–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 145 ATG7 module troubleshooting Figure 5-8: ATG7 module troubleshooting procedure (2) TG8000 Multiformat Test Signal Generator Service Manual 5–13...
Page 146: Atg7 Module Removal And Replacement
3. Use the 9/16 inch or 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. 5–14 TG8000 Multiformat Test Signal Generator 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. TG8000 Multiformat Test Signal Generator Service Manual 5–15...
Page 148: Atg7 Module Replaceable Parts List
This section contains a list of the replaceable modules for the ATG7 module. Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts ordering information or Module servicing in the TG8000 mainframe replaceable parts list section of this manual. (See page 2-35.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 149 ATG7 module replaceable parts list Figure 5-9: ATG7 module exploded view TG8000 Multiformat Test Signal Generator Service Manual 5–17...
Page 150 ATG7 module replaceable parts list 5–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 151: Avg7 Analog Video Generator Module
AVG7 Analog Video Generator module...
Page 153: Avg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the AVG7 Analog Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the AVG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 154: Avg7 Module Adjustment Procedures
WARNING. To avoid potential shock, which could cause injury or death, use caution when removing the TG8000 mainframe top cover with power connected. Access When adjusting the AVG7 module, remove the top cover of the TG8000 mainframe.
Page 155: Required Equipment
BNC female to dual banana Tektronix part number 103-0090-00 adapter Bit shape: 2.2 × 0.4 mm Murata KMDR010 Flat blade screwdriver for adjusting C604B, C704B, and C804B BNC female-to-female Canare BCJ-J connector TG8000 Multiformat Test Signal Generator Service Manual 6–3...
Page 156: To Adjust The Output Offset And Gain
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial termination, and...
Page 157 ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 3. Select the DAC Gain (GBR) : 0 mV calibration signal as follows: a.
Page 158: To Adjust Group Delay
Preparation To perform the group delay adjustment, you must ﬁrst remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) After you have removed the top cover, ﬁnd the variable resistors and capacitors on the AVG7 module circuit board. (See Figure 6-3.) 6–6...
Page 159 WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable and the TCA75 75 Ω signal adapter to connect the upper CH 1 connector on the AVG7 module to the CH 1 input connector on the oscilloscope.
Page 160 C835A, C735A, and C635A, and variable resistors R835A, R735A, and R635A. (See Figure 6-4.) 8. Rotate C837A, C737A, and C637A 180° from its initial position and set R835A, R735A, and R635A to its center position. 6–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 161 12. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AVG7 module. 13. Adjust C604B and C635A so that the baseline of the modulated 20T pulse signal is ﬂat. TG8000 Multiformat Test Signal Generator Service Manual 6–9...
Page 162: To Adjust The Frequency Response
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 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 module to the +INPUT connector on the peak detector ampliﬁer.
Page 163 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 TG8000 Multiformat Test Signal Generator Service Manual 6–11...
Page 164 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 7. Select the 525 GBR signal format as follows: a.
Page 165 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. TG8000 Multiformat Test Signal Generator Service Manual 6–13...
Page 166: To Adjust Interchannel Delay
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable and the TCA75 75 Ω signal adapter to connect the upper CH 1 connector on the AVG7 module to the CH 1 input connector on the oscilloscope.
Page 167 Acquire menu Average 8 Repetitive Signal: OFF CH 3 WAVEFORM 5. Set the test signal generator (ATG7 module) settings as indicated below: Output selection BLACK 1 Signal format NTSC Test signal Field Reference TG8000 Multiformat Test Signal Generator Service Manual 6–15...
Page 168 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 8. Select the DAC Test calibration signal as follows: a.
Page 169 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 TG8000 Multiformat Test Signal Generator Service Manual 6–17...
Page 170: To Conﬁrm The Frequency Response
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 6–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 171: Avg7 Module Theory Of Operation
D/A converter and 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. TG8000 Multiformat Test Signal Generator Service Manual 6–19...
Page 172 AVG7 module theory of operation Figure 6-11: Simpliﬁed block diagram of the AVG7 module 6–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 173: Avg7 Module Interconnect Diagram
Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the AVG7 module is located in the AVG7 module theory of operation section. (See page 6-19.) Figure 6-12: AVG7 module interconnect diagram TG8000 Multiformat Test Signal Generator Service Manual 6–21...
Page 174: Avg7 Module Troubleshooting
To back 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 (TG8000: PRESET) appears. 2. Press the ENTER button to access the PRESET submenu.
Page 175: Avg7 Module Troubleshooting Trees
AVG7 module troubleshooting AVG7 module troubleshooting trees Figure 6-13: AVG7 module troubleshooting procedure (1) TG8000 Multiformat Test Signal Generator Service Manual 6–23...
Page 176 AVG7 module troubleshooting Figure 6-14: AVG7 module troubleshooting procedure (2) 6–24 TG8000 Multiformat Test Signal Generator Service Manual...
Page 177: Avg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the AVG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older AVG7 modules TG8000 Multiformat Test Signal Generator Service Manual 6–25...
Page 178: How To Replace The Rear-Panel Connectors And Chassis
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. 6–26 TG8000 Multiformat Test Signal Generator Service Manual...
Page 179: Avg7 Module Replaceable Parts List
This section contains a list of the replaceable modules for the AVG7 module. Use this list to identify and order replacement parts. For parts ordering or servicing information, see Parts ordering information or Module servicing in the TG8000 mainframe replaceable parts list section of this manual. (See page 2-35.) Abbreviations Abbreviations conform to American National Standard ANSI Y1.1-1972.
Page 180 AVG7 module replaceable parts list Figure 6-15: AVG7 module exploded view 6–28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 181: Awvg7 Analog Wideband Video Generator Module
AWVG7 Analog Wideband Video Generator module...
Page 183: Awvg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the AWVG7 Analog Wideband Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the AWVG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 184: Awvg7 Module Adjustment Procedures
WARNING. To avoid potential shock, use caution when removing TG8000 mainframe top cover with power connected. Access When adjusting the AWVG7 module, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) NOTE.
Page 185: Required Equipment
Tektronix part number 103-0030-00 BNC female-to-dual banana Tektronix part number 103-0090-00 adapter BNC female-to-female Canare BCJ-J connector Flat blade screwdriver for Bit shape: 0.8X0.35 mm Murata KMDR060 adjusting C604B, C704B, and C804B TG8000 Multiformat Test Signal Generator Service Manual 7–3...
Page 186: To Adjust The Output Offset And Gain
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable, BNC T connector, 75 Ω coaxial termination, and BNC female-to-dual banana adapter to connect the upper CH 1 connector on the AWVG7 module to the INPUT connector on the digital multimeter.
Page 187 ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 3. Select the DAC Gain (GBR) : 0 mV calibration signal as follows: a.
Page 188 AWVG7 module. 27. Locate variable resistor R657A on the AWVG7 module circuit board. (See Figure 7-1.) 28. Adjust R657A so that the output offset is 0 V ±1 mV. 7–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 189: To Adjust The Frequency Response
Preparation To perform the frequency response adjustment, you must ﬁrst remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) After you have removed the top cover, ﬁnd the variable capacitors on the AWVG7 module circuit board. (See Figure 7-3.)
Page 190 WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 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 module to the +INPUT connector on the peak detector ampliﬁer.
Page 191 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 5. Select the DAC Test calibration signal as follows: a.
Page 192 11. Move the BNC cable from the upper CH 2 connector to the upper CH 3 connector on the AWVG7 module. 12. Adjust C604B so that the amplitude changes from 500 kHz to 20 MHz are at a minimum. 7–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 193: Awvg7 Module Theory Of Operation
D/A converter and 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. TG8000 Multiformat Test Signal Generator Service Manual 7–11...
Page 194 AWVG7 module theory of operation Figure 7-6: Simpliﬁed block diagram of the AWVG7 module 7–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 195: Awvg7 Module Interconnect Diagram
Mainfame diagrams section of this manual. (See page 2-9.) A block diagram of the AWVG7 module is located in the AWVG7 module theory of operation section. (See page 7-11.) Figure 7-7: AWVG7 module interconnect diagram TG8000 Multiformat Test Signal Generator Service Manual 7–13...
Page 196: Awvg7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 197: Awvg7 Module Troubleshooting Trees
AWVG7 module troubleshooting AWVG7 module troubleshooting trees Figure 7-8: AWVG7 module troubleshooting procedure (1) TG8000 Multiformat Test Signal Generator Service Manual 7–15...
Page 198 AWVG7 module troubleshooting Figure 7-9: AWVG7 module troubleshooting procedure (2) 7–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 199: Awvg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the AWVG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older AWVG7 modules TG8000 Multiformat Test Signal Generator Service Manual 7–17...
Page 200: How To Replace The Rear-Panel Connectors And Chassis
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. 7–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 201: Awvg7 Module Replaceable Parts List
MARKER, IDENT: MKD SERIAL NO. STANDARD ACCESSORIES 075-1045-XX MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION OPTIONAL ACCESSORIES 003-A041-00 NUTDRIVER, BOX: 14 MM HEX, BNC RETAINING NUT, MODIFIED 19 MM TG8000 Multiformat Test Signal Generator Service Manual 7–19...
Page 202 AWVG7 module replaceable parts list Figure 7-10: AWVG7 module exploded view 7–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 203: Bg7 Black Generator Module
BG7 Black Generator module...
Page 205: Bg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the BG7 Black Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the BG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 206: Bg7 Module Adjustment Procedures
Access When adjusting the blanking, luminance, and chrominance levels, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) Required equipment The following table lists the equipment required to adjust the output offset, output gain, and chroma gain.
Page 207: To Adjust The Output Offset And Gain
WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 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 module to the input connector on the digital multimeter.
Page 208 ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 3. Select the DAC Offset (0 V DC) calibration signal for BLACK 1 through BLACK 4 as follows: a.
Page 209: To Adjust Chroma Gain (Option Cb Only)
Preparation To perform the chroma gain adjustment, you must ﬁrst remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) After you have removed the top cover, ﬁnd the variable resistors on the BG7 circuit board. (See Figure 8-1.) TG8000 Multiformat Test Signal Generator Service Manual 8–5...
Page 210 WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. 1. Use the 75 Ω BNC cable to connect the BLACK 3 connector on the BG7 Generator module to the CH 1 connector on the oscilloscope.
Page 211 BLACK 4 connector on the BG7 module. 9. Locate variable resistor R977 on the BG7 circuit board. (See Figure 8-1.) 10. Adjust R977 to match the ﬁrst chroma packet to the level of the preceding 75% ﬂat bar. TG8000 Multiformat Test Signal Generator Service Manual 8–7...
Page 212: Bg7 Module 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 8-5: Simpliﬁed block diagram of the BG7 module 8–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 213: Bg7 Module Interconnect Diagram
BG7 module interconnect diagram The following ﬁgure shows the BG7 module and how it interconnects with the TG8000 mainframe. Diagrams showing mainframe component interconnections, such as power supply and oscillator, can be found in the Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the BG7 Generator module is located in the BG7 module theory of operation section.
Page 214: Bg7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 215: Bg7 Module Troubleshooting Trees
BG7 module troubleshooting BG7 module troubleshooting trees Figure 8-7: BG7 module troubleshooting procedure (1) TG8000 Multiformat Test Signal Generator Service Manual 8–11...
Page 216 BG7 module troubleshooting Figure 8-8: BG7 module troubleshooting procedure (2) 8–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 217: Bg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the BG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older BG7 modules TG8000 Multiformat Test Signal Generator Service Manual 8–13...
Page 218: How To Replace The Rear-Panel Connectors And Chassis
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. 8–14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 219: Bg7 Module Replaceable Parts List
MARKER, IDENT: MKD SERIAL NO. STANDARD ACCESSORIES 075-1045-XX MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION OPTIONAL ACCESSORIES 003-A041-00 NUTDRIVER, BOX: 14 MM HEX, BNC RETAINING NUT, MODIFIED 19 MM TG8000 Multiformat Test Signal Generator Service Manual 8–15...
Page 220 BG7 module replaceable parts list Figure 8-9: BG7 module exploded view 8–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 221: Dvg7 Digital Video Generator Module
DVG7 Digital Video Generator module...
Page 223: Dvg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the DVG7 Digital Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the DVG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 224: Dvg7 Module Adjustment Procedures
Access When adjusting the output level, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) Required equipment The following table lists the equipment required to adjust the output level.
Page 225: To Adjust The Output Level
(See Figure 9-1.) WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. Figure 9-1: DVG7 module circuit board TG8000 Multiformat Test Signal Generator Service Manual 9–3...
Page 226 2. Install the 80E04 sampling head into the 80A03 adapter and connect the two using the SMA cables. 3. Install the TCA-75 into the left port of the 80A03. 4. Install the TCA-BNC into the right port of the 80A03. 9–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 227 9. Calculate the total attenuation factor for the system. This is the DMM measurement divided by the corrected RMS sine wave amplitude. This attenuation factor will be used after measuring the signal outputs in the next test. TG8000 Multiformat Test Signal Generator Service Manual 9–5...
Page 228 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. 9–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 229 Before adjustment After adjustment Maximum Signal 1 amplitude 720 mV 880 mV Measured value (μ) with attenuation Black 1 amplitude (Option BK only) 720 mV 880 mV Measured value (μ) with attenuation TG8000 Multiformat Test Signal Generator Service Manual 9–7...
Page 230 1. Set the DVG7 module for a 75% Color Bar signal output: a. On the TG8000, press the MODULE button until the DVG7 module main menu is displayed. b. Press the BARS button until 75% Color Bars is displayed.
Page 231 Locate variable resistor R807 on the DVG7 circuit board. (See Figure 9-1.) d. Repeat steps 7 through 14 for the BLACK 1 output using R807 to adjust the amplitude. This completes the output level adjustment procedures. TG8000 Multiformat Test Signal Generator Service Manual 9–9...
Page 232: Dvg7 Module 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) 9–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 233 DVG7 module theory of operation Figure 9-2: Simpliﬁed block diagram of the DVG7 module TG8000 Multiformat Test Signal Generator Service Manual 9–11...
Page 234: Dvg7 Module Interconnect Diagram
Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the DVG7 module is located in the DVG7 module theory of operation section. (See page 9-10.) Figure 9-3: DVG7 module interconnect diagram 9–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 235: Dvg7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 236: Dvg7 Module Troubleshooting Trees
DVG7 module troubleshooting DVG7 module troubleshooting trees Figure 9-4: DVG7 module troubleshooting procedure (1) 9–14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 237 DVG7 module troubleshooting Figure 9-5: DVG7 module troubleshooting procedure (2) TG8000 Multiformat Test Signal Generator Service Manual 9–15...
Page 238: Dvg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the DVG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older DVG7 modules 9–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 239: How To Replace The Rear-Panel Connectors And Chassis
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. TG8000 Multiformat Test Signal Generator Service Manual 9–17...
Page 240: Dvg7 Module Replaceable Parts List
MARKER, IDENT: MKD SERIAL NO. STANDARD ACCESSORIES 075-1045-XX MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION OPTIONAL ACCESSORIES 003-A041-00 NUT DRIVER, BOX: 14 MM HEX, BNC RETAINING NUT, MODIFIED 19 MM 9–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 241 DVG7 module replaceable parts list Figure 9-6: DVG7 module exploded view TG8000 Multiformat Test Signal Generator Service Manual 9–19...
Page 242 DVG7 module replaceable parts list 9–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 243: Gps7 Gps Synchronization And Timecode Module
GPS7 GPS Synchronization and Timecode module...
Page 245: Gps7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the GPS7 GPS Synchronization and Timecode module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the GPS7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 246: Gps7 Module Adjustment Procedures
Tektronix part number 012-0074-00 75 Ω coaxial precision 75 Ω ±0.1% Tektronix part number 011-0102-03 terminator BNC T connector Tektronix part number 103-0030-00 BNC female to dual banana Tektronix part number 103-0090-00 adapter 10–2 TG8000 Multiformat Test Signal Generator Service Manual...
Page 247: To Adjust Black Burst Level And Offset
ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Connect the Black 1 output to the multimeter as shown. (See Figure 10-1.) Figure 10-1: Equipment connections for GPS7 module adjustments 3.
Page 248 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. 10–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 249: Gps7 Module Theory Of Operation
The corrected phase is ﬁrst ﬁltered in the averaging and loop control block, and then read by software. The software then writes this to a synthesizer on the TG8000 mainframe board to control the frequency of the mainframe master 54 MHz clock. This frequency control value can also be seen on the module diagnostic display.
Page 250 Outputs The three Black Generation Engines and the four LTC engines each receive one of three frame reset pulses from the TG8000 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 251 Figure 10-2: Simpliﬁed block diagram of the GPS7 module NOTE. The time code reader and genlock circuitry is only available on GPS7 modules with the REF IN connector on the rear panel. TG8000 Multiformat Test Signal Generator Service Manual 10–7...
Page 252: Gps7 Module Troubleshooting
GPS7 module. These procedures help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed below is needed to troubleshoot the GPS7 module.
Page 253: Problem Identiﬁcation
• Frame phase wrong (determined • Verify conﬁguration. (See page 10-12, Verify the conﬁguration.) by Performance Veriﬁcation • Check time zone offset conﬁguration and time of day source. See the TG8000 User manual • Time of Day wrong for directions.
Page 254 • 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 TG8000 User manual for directions. • Verify GPS7 time sync method is set as needed. The “Follow” mode is best for troubleshooting purposes.
Page 255: Troubleshooting Procedures
Troubleshooting procedures Power on self test When you ﬁrst apply power to a TG8000, 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 10-4.) Watch the display during boot up and note any error codes.
Page 256 The best way to ensure a common setup is to set both instruments to the factory presets: 1. Press the MODULE button until TG8000 appears. 2. Press ENTER to select PRESET. 3. If needed, use the up (▲) or down (▼) arrow buttons to select Recall.
Page 257 GPS7 module. Check diagnostic reported There are several internally detected physical measurements which are reported by the GPS7 module. Check the following (see the TG8000 User manual for values detailed procedures). Temperature: Temperature is detected on the Trimble GPS receiver board.
Page 258 'M' at the start of the supply name. (See Table 10-5.) Derived supplies depend on the mainframe supply fuses for protection. Access. To perform the power supply tests you must ﬁrst remove the TG8000 top cover. (See page 2-25, Top cover.) Then use the following ﬂowchart and table of power supply test points to determine if the GPS7 power supply is operating correctly.
Page 259 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 TG8000 Multiformat Test Signal Generator Service Manual 10–15...
Page 260 GPS7 module troubleshooting Figure 10-4: GPS7 voltage test point and fuse locations 10–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 261 4. This process requires four satellites to complete successfully. If the signal is marginal the acquisition may take longer. If the signal is poor, or if there is no signal, the acquisition will not ﬁnish. TG8000 Multiformat Test Signal Generator Service Manual 10–17...
Page 262 13. Reconnect the antenna. Swap modules and If you have other TG8000 modules or mainframes available, they can be used to help isolate problems. mainframes Swap the GPS7 module into slot 1 of another TG8000 mainframe. If the GPS7 module works in that mainframe the problem is in the original mainframe.
Page 263 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 TG8000/GPS7 unit, you can use a frequency counter to determine the frequency error. 5. Connect the frequency counter to the BLACK 3 output.
Page 264 ENTER button. If you do not, press the right (►) arrow button until it appears in the menu, and then press the ENTER button. 11. Press the down (▼) arrow button until SELECT FORMAT appears in the menu, and then press the ENTER button. 10–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 265 ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Connect Black 1 of the reference unit to the Black 1 of the GPS7 module.
Page 266 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. 10–22 TG8000 Multiformat Test Signal Generator Service Manual...
Page 267: Gps7 Module Removal And Replacement
Standard tool mainframe inch wrench Wrench or deep nut driver, to remove nuts Standard tool from BNC connectors inch socket Socket or nut driver to remove jackscrews Standard tool from DSUB connector TG8000 Multiformat Test Signal Generator Service Manual 10–23...
Page 268: To Remove The Gps7 Module
However, if a connector or chassis becomes damaged, you can replace it. NOTE. The Black 1, Black 2, and Black 3 BNC connectors are not customer To replace the rear-panel replaceable. connectors 10–24 TG8000 Multiformat Test Signal Generator Service Manual...
Page 269 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. TG8000 Multiformat Test Signal Generator Service Manual 10–25...
Page 270: Gps7 Module Replaceable Parts List
1.3 X 0.33, TRIMBLE RESOLUTION T 174-5511-00 CABLE, DSUB TO BOARD 15 CONDUCTOR 343-1584-00 CLAMP; WIRE ROUTING, 0.51 H X 0.625 W, NYLON STANDARD ACCESSORIES 075-1045-XX MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION 10–26 TG8000 Multiformat Test Signal Generator Service Manual...
Page 271 GPS7 module replaceable parts list Figure 10-5: GPS7 module replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 10–27...
Page 272 GPS7 module replaceable parts list 10–28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 273: Hd3G7 Hd 3 Gb/S Sdi Video Generator Module
HD3G7 HD 3 Gb/s SDI Video Generator module...
Page 275: Hd3G7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the HD3G7 HD 3 Gb/s SDI Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the HD3G7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 276: Hd3G7 Module Adjustment Procedures
Tektronix part number 015-0554-00 adapter 1 m (3 ft.) BNC to BNC Belden 1694, MarkerTek 1694-B-B-3 high-bandwidth cable Tektronix part number 012-0057-01 1 m (3 ft.) BNC to BNC 50 Ω cable 11–2 TG8000 Multiformat Test Signal Generator Service Manual...
Page 277: Adjustment Procedures
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 11-2.) TG8000 Multiformat Test Signal Generator Service Manual 11–3...
Page 278 Adjustment Record Value Minimum Before adjustment After adjustment Maximum Signal 1 amplitude 776 mV 824 mV Measured value (μ) with attenuation Signal 2 amplitude 776 mV 824 mV Measured value (μ) with attenuation 11–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 279 Amplitude table. (See Table 11-2.) 5. 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 11-2.) TG8000 Multiformat Test Signal Generator Service Manual 11–5...
Page 280 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Connect the 50 Ω cable from the HD3G7 TRIGGER OUTPUT connector, using the BNC to SMA adapter (with or without the 6 dB attenuator) to the oscilloscope Trigger Direct input.
Page 281 14. Press the TG8000 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 282 22. Press the right (►) arrow button to select 20 Bits Square, and then press the ENTER button. 23. Repeat steps 13 through 19 for the Signal 2 output. 24. Cycle the power on the TG8000 to return the generator to normal operating mode. 11–8...
Page 283: Hd3G7 Module 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. TG8000 Multiformat Test Signal Generator Service Manual 11–9...
Page 284: 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. 11–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 285: 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. TG8000 Multiformat Test Signal Generator Service Manual 11–11...
Page 286: Hd3G7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual.(See page 2-10.) Required equipment The equipment listed below is required to troubleshoot the HD3G7 module.
Page 287: Problem Identiﬁcation
Problem identiﬁcation If there is a problem, ﬁrst perform the HD3G7 Performance Veriﬁcation procedure, found in the TG8000 Speciﬁcations and Performance Veriﬁcation Technical Reference manual, available on the Web at www.tektronix.com/downloads. Any problems found with that procedure can be a starting point for troubleshooting.
Page 288: Hd3G7 Module Troubleshooting Procedures
HD3G7 module troubleshooting procedures Power on self test When you ﬁrst apply power to a TG8000, 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 11-5.) Watch the display during boot up and note any error codes.
Page 289 If any voltages are out of the established limits, the HD3G7 module must be replaced. DDS SWEEP: This diagnostic capability is available only in factory mode and is not used in normal module troubleshooting. TG8000 Multiformat Test Signal Generator Service Manual 11–15...
Page 290 Use this procedure to check the installed software versions: ﬁrmware version 1. Access the UTILITY menu. a. From the TG8000 main menu, press the up (▲) or down (▼) arrow buttons to select UTILITY. b. Press the ENTER button to enter the utility submenu.
Page 291 3 Gb/s Level A YCbCr 4:2:2 10b OUTPUT MODE Level A MOVING PICTURE H Step 0 Sample(s) V Step 0 Line(s) Period 1 Frame(s) Random Disable TIMING Vertical 0 Line(s) Horizontal 0.0000 μs VIDEO TRIGGER OUTPUT System Clock TG8000 Multiformat Test Signal Generator Service Manual 11–17...
Page 292 The module diagnostics check most of the power supplies, but there are two that need manual veriﬁcation. 1. Remove the TG8000 top cover. (See page 2-25, 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 293 Press the ENTER button to reset the instrument to the factory default settings. Press the BACK button to return the TG8000 main menu. 4. Verify that both HD3G7 module outputs provide a 59.94, 1080p format, 75% color bar signal.
Page 294 2. Try another HD3G7 module (or a DVG7, BG7, or AVG7 module, all of which use the same clocks and frame pulses) in the same mainframe and slot. If another module works correctly in the original slot, then replace the HD3G7 module. 11–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 295 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Run the Check module diagnostics routine. (See page 11-15, Check the module diagnostics.)
Page 296: Hd3G7 Module Removal And Replacement
ﬁttings for reassembly. NOTE. The Input and Output circuit boards can only be separated from the Main board after the entire circuit board assembly has been removed from the chassis. 11–22 TG8000 Multiformat Test Signal Generator Service Manual...
Page 297: To Reassemble The Hd3G7 Module
3. Loosely install the six T10 TORX screws that attach the Main circuit board to the chassis. CAUTION. To prevent damage to the circuit boards and to the FPGA, do not tighten these screws at this time. TG8000 Multiformat Test Signal Generator Service Manual 11–23...
Page 298 Main board to the heat sink are tightened last (7 and 8). Torque all these screws to 8.0 in/lb. Figure 11-4: HD3G7 module main board installation The HD3G7 module is now ready to install in the mainframe. 11–24 TG8000 Multiformat Test Signal Generator Service Manual...
Page 299: Hd3G7 Module Replaceable Parts List
WASHER, LOCK; 0.521 ID, INT, 0.025 THK, STEEL, ZINC FINISH 211-0101-00 SCREW, MACHINE; 4-40 X 0.25, FLH, 100 DEG, ZINC PLATED STEEL, T8 348-A128-00 SHLD GASKET, ELEK: FINGER TYPE, 5.1MM LX6.4MM W, BE-CU [97-645-02] TG8000 Multiformat Test Signal Generator Service Manual 11–25...
Page 300 HD3G7 module replaceable parts list Figure 11-5: HD3G7 module – replaceable parts 11–26 TG8000 Multiformat Test Signal Generator Service Manual...
Page 301 131-8270-00 CONN, EDGECARD, PCB, STRAIGHT, FEMALE, SOCKET, 2X20, 40 POS, HIGH SPEED, 0.8 MM PITCH, 0.062 BOARD, SMT, SAMTEC MEC8-120-02-L-D-DV -A - K Figure 11-6: HD3G7 module main board – replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 11–27...
Page 302 HD3G7 module replaceable parts list 11–28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 303: Hdlg7 Hd Dual Link Video Generator Module
HDLG7 HD Dual Link Video Generator module...
Page 305: Hdlg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the HDLG7 HD Dual Link Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the HDLG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 306: Hdlg7 Module Theory Of Operation
EAV and SAV blanking data using the sample and line counts from the Address Generator. Generator formatter The Generator Formatter separates the generated video into two output signals (Link A and Link B). 12–2 TG8000 Multiformat Test Signal Generator Service Manual...
Page 307 (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 12-1: Simpliﬁed block diagram of the HDLG7 module TG8000 Multiformat Test Signal Generator Service Manual 12–3...
Page 308: Hdlg7 Module Interconnect Diagram
Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the HDLG7 module is located in the HDLG7 module theory of operation section. (See page 12-2.) Figure 12-2: HDLG7 module connections 12–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 309: Hdlg7 Module Troubleshooting
HDLG7 module. These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the TG8000 Mainframe Troubleshooting section in this manual.(See page 2-10, Mainframe troubleshooting.)
Page 310: Hdlg7 Module Troubleshooting Trees
HDLG7 module troubleshooting HDLG7 module troubleshooting trees Figure 12-3: HDLG7 module troubleshooting procedure (1) 12–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 311 HDLG7 module troubleshooting Figure 12-4: HDLG7 module troubleshooting procedure (2) TG8000 Multiformat Test Signal Generator Service Manual 12–7...
Page 312: Hdlg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the HDLG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older HDLG7 modules 12–8 TG8000 Multiformat Test Signal Generator Service Manual...
Page 313: How To Replace The Rear-Panel Connectors And Chassis
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. TG8000 Multiformat Test Signal Generator Service Manual 12–9...
Page 314: Hdlg7 Module Replaceable Parts List
CABLE, RF, 75 OHM; 110 MM, BNC TO MCX75 211-A245-01 SCREW, MACHINE: M3X6MM L, PNH, STL, NI PL, CROSS REC, W/NUT & LOCK WASHER, TG8000 OPT FP, AG7, AGL7, BG7, DVG7, HDVG7 671-6184-00 CIRCUIT BD ASSY; DUAL LINK GENERATOR/CONVERTER, TESTED, WIRED...
Page 315 HDLG7 module replaceable parts list Figure 12-5: HDLG7 module exploded view TG8000 Multiformat Test Signal Generator Service Manual 12–11...
Page 316 HDLG7 module replaceable parts list 12–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 317: Hdvg7 Hdtv Digital Video Generator Module
HDVG7 HDTV Digital Video Generator module...
Page 319: Hdvg7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the HDVG7 HDTV Digital Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the DVG7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 320: Hdvg7 Module Adjustment Procedures
Access When adjusting the output level, you need to remove the top cover of the TG8000 mainframe. (See page 2-25, Top cover.) Required equipment The following table lists the equipment required to adjust the output level.
Page 321: To Adjust The Output Level
(See Figure 13-1.) WARNING. To avoid serious injury, do not touch exposed connectors or components when operating the TG8000 mainframe with the top cover removed. Dangerous potentials exist at several points within the TG8000 mainframe. Figure 13-1: HDVG7 module circuit board TG8000 Multiformat Test Signal Generator Service Manual 13–3...
Page 322 2. Install the 80E04 sampling head into the 80A03 adapter and connect the two using the SMA cables. 3. Install the TCA-75 into the left port of the 80A03. 4. Install the TCA-BNC into the right port of the 80A03. 13–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 323 9. Calculate the total attenuation factor for the system. This is the DMM measurement divided by the corrected RMS sine wave amplitude. This attenuation factor will be used after measuring the signal outputs in the next test. TG8000 Multiformat Test Signal Generator Service Manual 13–5...
Page 324 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. 13–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 325 Before adjustment After adjustment Maximum Signal 1 amplitude 720 mV 880 mV Measured value (μ) with attenuation Black 1 amplitude (Option BK only) 720 mV 880 mV Measured value (μ) with attenuation TG8000 Multiformat Test Signal Generator Service Manual 13–7...
Page 326 1. Set the HDVG7 module for a 75% Color Bar signal output: a. On the TG8000, press the MODULE button until the HDVG7 module main menu is displayed. b. Press the BARS button until 75% Color Bars is displayed.
Page 327 Locate variable resistor R630 on the HDVG7 circuit board. (See Figure 13-1.) d. Repeat steps 8 through 15 for the BLACK 1 output using R630 to adjust the amplitude. This completes the output level adjustment procedures. TG8000 Multiformat Test Signal Generator Service Manual 13–9...
Page 328: Hdvg7 Module Theory Of Operation
The serializer converts a 20 bits parallel data to SDI signal. Black generator This block generates black or gray (40% gray) signal for the BLACK 1 and BLACK 2 outputs. (Option BK only) 13–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 329 HDVG7 module theory of operation Figure 13-2: Simpliﬁed block diagram of the HDVG7 module TG8000 Multiformat Test Signal Generator Service Manual 13–11...
Page 330: Hdvg7 Module Interconnect Diagram
Mainframe diagrams section of this manual. (See page 2-9.) A block diagram of the HDVG7 module is located in the HDVG7 module theory of operation section. (See page 13-10.) Figure 13-3: HDVG7 module interconnect diagram 13–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 331: Hdvg7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual.(See page 2-10.) Required equipment The equipment listed in the following table is required for troubleshooting.
Page 332: Hdvg7 Module Troubleshooting Trees
HDVG7 module troubleshooting HDVG7 module troubleshooting trees Figure 13-4: HDVG7 module troubleshooting procedure (1) 13–14 TG8000 Multiformat Test Signal Generator Service Manual...
Page 333 HDVG7 module troubleshooting Figure 13-5: HDVG7 module troubleshooting procedure (2) TG8000 Multiformat Test Signal Generator Service Manual 13–15...
Page 334: Hdvg7 Module Removal And Replacement
Nut driver, 9/16 inch Nut driver for removing the BNC deep socket connectors of the HDVG7 module Nut driver, 14 mm 003-A041-00 Special nut driver for removing the BNC connectors of older HDVG7 modules 13–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 335: How To Replace The Rear-Panel Connectors And Chassis
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. TG8000 Multiformat Test Signal Generator Service Manual 13–17...
Page 336: Hdvg7 Module Replaceable Parts List
INSULATOR, PLATE: HEAT CONDUCTOR, RUBBER, 20MMX20MMX10MM THK [TC1000-TCK] STANDARD ACCESSORIES 075-1045-XX MANUAL, TECH: MODULE INSTALLATION INSTRUCTIONS 063-4440-XX DVD, SOFTWARE LIBRARY & DOCUMENTATION OPTIONAL ACCESSORIES 003-A041-00 NUT DRIVER, BOX: 14 MM HEX, BNC RETAINING NUT, MODIFIED 19 MM 13–18 TG8000 Multiformat Test Signal Generator Service Manual...
Page 337 HDVG7 module replaceable parts list Figure 13-6: HDVG7 module exploded view TG8000 Multiformat Test Signal Generator Service Manual 13–19...
Page 338 HDVG7 module replaceable parts list 13–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 339: Sdi7 Dual Channel Sd/Hd/3G Sdi Video Generator Module
SDI7 Dual Channel SD/HD/3G SDI Video Generator module...
Page 341: Sdi7 Module Service Overview
This section contains the information needed to do periodic and corrective maintenance on the SDI7 Dual Channel SD/HD/3G SDI Video Generator module. Refer to Mainframe service overview for information about servicing the TG8000 mainframe. (See page 2-1.) If the SDI7 module does not function properly, troubleshooting and corrective measures should be taken immediately to prevent additional problems.
Page 342: Sdi7 Module Adjustment Procedures
Tektronix part number 015-0554-00 adapter 1 m (3 ft.) BNC to BNC Belden 1694, MarkerTek 1694-B-B-3 high-bandwidth cable Tektronix part number 012-0057-01 1 m (3 ft.) BNC to BNC 50 Ω cable 14–2 TG8000 Multiformat Test Signal Generator Service Manual...
Page 343: Adjustment Procedures
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 14-2 on page 14-6.) TG8000 Multiformat Test Signal Generator Service Manual 14–3...
Page 344 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. 14–4 TG8000 Multiformat Test Signal Generator Service Manual...
Page 345 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. TG8000 Multiformat Test Signal Generator Service Manual 14–5...
Page 346 776 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 14–6 TG8000 Multiformat Test Signal Generator Service Manual...
Page 347 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Press the MODULE button until SDI7[x-1]: STATUS appears.
Page 348 19. Press the TG8000 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 349 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 TG8000 to return the generator to normal operating mode. TG8000 Multiformat Test Signal Generator Service Manual...
Page 350: Sdi7 Module Theory 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. 14–10 TG8000 Multiformat Test Signal Generator Service Manual...
Page 351: 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. TG8000 Multiformat Test Signal Generator Service Manual 14–11...
Page 352: 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. 14–12 TG8000 Multiformat Test Signal Generator Service Manual...
Page 353: Sdi7 Module Troubleshooting
These procedures will help you decide whether it is necessary to replace your module. If the TG8000 mainframe does not boot up or if the display is not working, refer to the Mainframe troubleshooting section in this manual. (See page 2-10.) Required equipment The equipment listed here is needed to troubleshoot the SDI7 module.
Page 354: Problem Identiﬁcation
Problem identiﬁcation If there is a problem, ﬁrst perform the SDI7 Performance Veriﬁcation procedure, found in the TG8000 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 355: Troubleshooting Procedures
Troubleshooting procedures Power on self test When you ﬁrst apply power to a TG8000, 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 14-5.) Watch the display during boot up and note any error codes.
Page 356 “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. 14–16 TG8000 Multiformat Test Signal Generator Service Manual...
Page 357 7 seconds to complete. If 0 errors detected is not displayed, replace the SDI7 module. 5. Remove power and then reapply power to the TG8000 to exit factory mode. Check the installed Use this procedure to check the installed ﬁrmware versions: ﬁrmware version...
Page 358 Press the ENTER button to reset the instrument to the factory default settings. Press the BACK button to return the TG8000 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 359 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 TG8000 Multiformat Test Signal Generator Service Manual 14–19...
Page 360 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) 14–20 TG8000 Multiformat Test Signal Generator Service Manual...
Page 361 Field 2, Line: 1928 Start Sample Video Channel Luma Link Location Link A Stream Location HS Stream 1 SMPTE 352 PAYLOAD Enable TRIGGER OUTPUT Clock System Clock Source SECONDARY OUTPUT Test Pattern TG8000 Multiformat Test Signal Generator Service Manual 14–21...
Page 362 The module diagnostics check most of the power supplies, but there are two that need manual veriﬁcation. 1. Remove the TG8000 top cover. (See page 2-25, 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 363 Press the ENTER button to reset the instrument to the factory default settings. Press the BACK button to return the TG8000 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 364 When the message TG8000 Booting... displays, release the MODULE and ENTER buttons. Continue holding the Front Panel ENABLE button. d. When the message TG8000 Start up with Factory Mode displays, release the Front Panel ENABLE button. 2. Run the Check module diagnostics routine. (See page 14-15, Check the module diagnostics.)
Page 365 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 TG8000 : UTILITY is displayed, and then press the ENTER button. 3. Press the up (▲) or down (▼) arrow button until TG8000 : UTILITY : OPTIONS ENABLED is displayed.
Page 366 1. If necessary, install the TGComm application on your PC. You can install the software from the TG8000 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 TG8000 SW Library and Documentation DVD.
Page 367: Sdi7 Module 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. TG8000 Multiformat Test Signal Generator Service Manual 14–27...
Page 368: To Reassemble The Sdi7 Module
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. 14–28 TG8000 Multiformat Test Signal Generator Service Manual...
Page 369 Main board to the heat sink are tightened last (7 and 8). Torque all these screws to 8.0 in/lb. Figure 14-3: SDI7 module main board installation The SDI7 module is now ready to install in the mainframe. TG8000 Multiformat Test Signal Generator Service Manual 14–29...
Page 370 SCREW, MACHINE; 4-40 X 0.25, FLH, 100 DEG, ZINC PLATED STEEL, T8 348-A128-00 SHLD GASKET, ELEK: FINGER TYPE, 5.1 MM LX6.4 MM W, BE-CU [97-645-02] 878-0580-00 CIRCUIT BOARD SUBASSY; SDI7 TEST SIGNAL GENERATOR, UNTESTED, 389409300 ROHS COMPLIANT 14–30 TG8000 Multiformat Test Signal Generator Service Manual...
Page 371 SDI7 module replaceable parts list Figure 14-4: SDI7 module – replaceable parts TG8000 Multiformat Test Signal Generator Service Manual 14–31...
Page 372 FUSE; SMD: 2 A, 32 V, FAST ACTING, 0.024 OHM, 0603 SIZE, UL/CSA REG, SAFETY CONTROLLED, TAPE & REEL, 5000 PCS, PB FREE Figure 14-5: SDI7 module main board – replaceable parts 14–32 TG8000 Multiformat Test Signal Generator Service Manual...