Tektronix VITS100 Uživatelský manuál

Instruction ManualVITS100NTSC VITS Inserter070-8333-02WarningThe servicing instructions are for use by qualifiedpersonnel only. To avoid personal inju

Table of ContentsivVITS100 NTSC VITS Inserter Instruction ManualFigure 5–9: Connecting the RF bridge to the spectrum analyzer/tracking generator 5–18.

Adjustment Procedures6–2VITS100 NTSC VITS Inserter Instruction ManualTable 6–1: Recommended Test Equipment Item Minimum Requirements ExampleVariable A

Adjustment ProceduresVITS100 NTSC VITS Inserter Instruction Manual6–3With the exception of the video signal connection, this step is the starting poin

Adjustment Procedures6–4VITS100 NTSC VITS Inserter Instruction ManualTP3J17J19J18J20S8S7S4S3S2S1TP9GNDJ56J57J6J5J54J28TP7GNDJ9J22J33J32L12L13L14J2J3J4

Adjustment ProceduresVITS100 NTSC VITS Inserter Instruction Manual6–5Use this step to adjust the +5 V Adjust, R170, which serves as the reference fora

Adjustment Procedures6–6VITS100 NTSC VITS Inserter Instruction ManualTelevision Test Signal GeneratorVITS InserterWaveform/Vector MonitorTest SignalPr

Adjustment ProceduresVITS100 NTSC VITS Inserter Instruction Manual6–7Program color fields1 and 3Program color fields2 and 4Line 18 Line 17Line 20 Line

Adjustment Procedures6–8VITS100 NTSC VITS Inserter Instruction ManualTelevision Test Signal GeneratorWaveform/Vector MonitorTest SignalCH A input75 WT

Adjustment ProceduresVITS100 NTSC VITS Inserter Instruction Manual6–97. Set VITS selection DIP S1, segments 1 through 4, to 0001 (segments 1, 2,and 3

Adjustment Procedures6–10VITS100 NTSC VITS Inserter Instruction ManualTSG/SPGTest oscilloscopePeak-to-peakdetectorOUTPUTINTPUTBNCAdaptorPeak-to-peakde

Adjustment ProceduresVITS100 NTSC VITS Inserter Instruction Manual6–1110090100%Figure 6–7: Display for adjusting flatness14. Remove the female to-fema

Table of ContentsVITS100 NTSC VITS Inserter Instruction ManualvList of TablesTable 1–1: Factory VITS, Standard and Option 1M 1–4. . . . . . . . . .

Adjustment Procedures6–12VITS100 NTSC VITS Inserter Instruction Manual17. Adjust R210 and C165 for a display on the Test Oscilloscope that matchesthe

Maintenance

VITS100 NTSC VITS Inserter Instruction Manual7–1MaintenanceThis section discusses the following topics related to maintaining and servicingthe VITS100

Maintenance7–2VITS100 NTSC VITS Inserter Instruction Manualwarranty service at most Tektronix service locations. Do not service theVITS100 NTSC VITS I

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–33. Discharge the static voltage from your body by wearing a wrist groundingstrap when handl

Maintenance7–4VITS100 NTSC VITS Inserter Instruction ManualCircuit Board JumpersThere are 3 plug jumpers for mode selection and 14 test jumpers for us

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–5All installation procedures that do not require removing the protective cover ofthe VITS in

Maintenance7–6VITS100 NTSC VITS Inserter Instruction ManualTable 7–2: Test Jumpers Function Jumper # DescriptionFactorySettingGenlock Processor Reset

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–7Table 7–2: Test Jumpers (Cont.)FunctionFactorySettingDescriptionJumper #V Sync J56 Pins 1–2

Table of ContentsviVITS100 NTSC VITS Inserter Instruction ManualTable 7–1: Mode Selection Jumpers 7–5. . . . . . . . . . . . . . . . . . . . . . . .

Maintenance7–8VITS100 NTSC VITS Inserter Instruction ManualRemoval and Replacement InstructionsUse the following procedures to remove and replace the

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–93. Install the instrument top cover.This procedure requires a #1 phillips screwdriver and a

Maintenance7–10VITS100 NTSC VITS Inserter Instruction ManualBNC Hex nuts(3)J27Power supply shieldLine filter screws (2)Mounting screwMounting screwMou

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–113. Remove the screw and hex nut that attach the power transistor to the outsideof the meta

Maintenance7–12VITS100 NTSC VITS Inserter Instruction ManualFigure 7–3: Diagnostics switch, S8To run a user diagnostic (including those run at power u

MaintenanceVITS100 NTSC VITS Inserter Instruction Manual7–13Table 7–3: The User Diagnostics (Cont.)DiagnosticSwitch (S8)SettingTest ResultIndicationDe

Maintenance7–14VITS100 NTSC VITS Inserter Instruction Manual

Replaceable Electrical Parts

VITS100 NTSC VITS Inserter Instruction Manual8–1Replaceable Electrical PartsThis section contains a list of the electrical components for the VITS100

VITS100 NTSC VITS Inserter Instruction ManualviiGeneral Safety SummaryReview the following safety precautions to avoid injury and prevent damage tothi

Replaceable Electrical Parts8–2VITS100 NTSC VITS Inserter Instruction ManualParts List Column Descriptions Column Column Name Description1 Component N

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–3Manufacturers Cross Index, Electrical Parts Mfr.CodeManufacturer Address C

Replaceable Electrical Parts8–4VITS100 NTSC VITS Inserter Instruction ManualManufacturers Cross Index, Electrical Parts (Cont.)Mfr.CodeCity, State, Zi

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–5Manufacturers Cross Index, Electrical Parts (Cont.)Mfr.CodeCity, State, Zi

Replaceable Electrical Parts8–6VITS100 NTSC VITS Inserter Instruction ManualManufacturers Cross Index, Electrical Parts (Cont.)Mfr.CodeCity, State, Zi

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–7Replaceable Electrical Parts List ComponentNumberTektronixPart NumberSeria

Replaceable Electrical Parts8–8VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberMf

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–9Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberMf

Replaceable Electrical Parts8–10VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–11Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

General Safety SummaryviiiVITS100 NTSC VITS Inserter Instruction ManualWARNING. Warning statements identify conditions or practices that could resulti

Replaceable Electrical Parts8–12VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–13Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–14VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–15Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–16VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–17Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–18VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–19Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–20VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–21Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

VITS100 NTSC VITS Inserter Instruction ManualixService Safety SummaryOnly qualified personnel should perform service procedures. Read this ServiceSafe

Replaceable Electrical Parts8–22VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–23Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–24VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–25Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–26VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical PartsVITS100 NTSC VITS Inserter Instruction Manual8–27Replaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Replaceable Electrical Parts8–28VITS100 NTSC VITS Inserter Instruction ManualReplaceable Electrical Parts List (Cont.)ComponentNumberMfr. Part NumberM

Diagrams

VITS100 NTSC VITS Inserter Instruction Manual9–1  #     " !$   

Service Safety SummaryxVITS100 NTSC VITS Inserter Instruction Manual

9–2VITS100 NTSC VITS Inserter Instruction ManualC1 5 D5 A1 F5C2 5 E4 A1 C6C3 5 A1 A1 B5C4 5 C2 A1 C4C5 5 F2 A1 D5C6 5 E2 A1 D5C7 5 E2 A1 D5C8 5 E2 A1

VITS100 NTSC VITS Inserter Instruction Manual9–3R31 5 B2 A1 C5R32 5 B1 A1 B5R33 5 B1 A1 B4R34 5 C1 A1 B5R35 5 C1 A1 C4R36 5 C1 A1 B5R37 5 C4 A1 F4R38

9–4VITS100 NTSC VITS Inserter Instruction Manual  #     " !$   

VITS100 NTSC VITS Inserter Instruction Manual9–5 20 22 20 22+5V 11 22ETSD[0..11]ETSD[0..11]TSD01A 21Y 41B 32A 52Y 72B 63A 113Y 93B 104A 144Y124B 1

9–6VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–71L[0..3]2L[0..3]TEST SIGNAL SELECT1L01L11L21L32L02L1+5V 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8

9–8VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–9SYNCTIMEBLKCLK(BLANK)1 - 2 FRONT PANEL SELECTION ENABLEDNO PLUG VITS ON LINES 17 THROUGH 302 - 3

9–10VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–11 3HARDWARE WATCHDOG RESET+5V 8+5V 12345678910R1782.7kJ61 - 2 NO RESET2 - 3 HOLD IN RESET MODEP61

Getting Started

9–12VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–131 15L199uHC120240pFR35392PROGRAM INPROGIN+10VJ10PROGRAMGAINADJUSTK2-47R214499R1815.0kR32301.0C310uFR3

9–14VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–15J1241 2 3R217162/260CR14R3R4C181.0M0.1uF20k+10V 1 2 3 4 5J11R1C170.1uF47.5P33 1 2 3 4 5-5V-5VR6

9–16VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–17 1 2J50FULL FIELD TEST SIGNALL189uHC119240pFR10375.0ETSD[0..11]U63A-3U63A-26U111CLK8FSCETSD[0..11]E

9–18VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–19LM393FLOATING COMMONFOR220V110VREARPANELLF1 1 2S10ACR14322MF1R1441M 3 4S10BRT15RV1330VCR12C840.15uF

9–20VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–21+5V-5V+12VP-12VP+5VP-5VP+12V OUTPUT150 MA150 MA-12V OUTPUT+5V OUTPUT4AMPS-5.2V OUTPUT1.5 AMPS 1 2 3 4

9–22VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–23  #     " !$  

9–24VITS100 NTSC VITS Inserter Instruction ManualTable 9–3: A1 Component Locator 671–2132–00 through -04

VITS100 NTSC VITS Inserter Instruction Manual9–25

9–26VITS100 NTSC VITS Inserter Instruction Manual

VITS100 NTSC VITS Inserter Instruction Manual9–27

9–28VITS100 NTSC VITS Inserter Instruction Manual

Replaceable Mechanical Parts

VITS100 NTSC VITS Inserter Instruction Manual10–1Replaceable Mechanical PartsThis section contains a list of the replaceable mechanical components for

VITS100 NTSC VITS Inserter Instruction Manual1–1Getting StartedThe Tektronix VITS100 NTSC VITS Inserter is a high quality signal generatordesigned to

Replaceable Mechanical Parts10–2VITS100 NTSC VITS Inserter Instruction ManualParts List Column DescriptionsColumn Column Name Description1 Figure &

Replaceable Mechanical PartsVITS100 NTSC VITS Inserter Instruction Manual10–3Manufacturers Cross Index, Mechanical Parts Mfr.CodeManufacturer Address

Replaceable Mechanical Parts10–4VITS100 NTSC VITS Inserter Instruction ManualReplaceable Mechanical Parts List Fig. &IndexNumberTektronix PartNumb

Replaceable Mechanical PartsVITS100 NTSC VITS Inserter Instruction Manual10–5Replaceable Mechanical Parts List (Cont.)Fig. &IndexNumberMfr. Part N

Replaceable Mechanical Parts10–6VITS100 NTSC VITS Inserter Instruction Manual121345678910111213141415161718192014114212223142425262728A1Figure 10–1: E

Appendix

VITS100 NTSC VITS Inserter Instruction ManualA–1Appendix A: OptionsThis Appendix describes the available VITS100 NTSC VITS Inserter options.Operation

Appendix A: OptionsA–2VITS100 NTSC VITS Inserter Instruction ManualOption 1JThe VITS100 NTSC VITS Inserter Option 1J contains the following threesigna

Appendix A: OptionsVITS100 NTSC VITS Inserter Instruction ManualA–30–401000 4.7 9.2 15.8 22.4 29.0 35.6 42.2 48.8 55.5 63.56msFigure A–2: Option 1J FC

Copyright © Tektronix, Inc. All rights reserved.Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this pu

Getting Started1–2VITS100 NTSC VITS Inserter Instruction ManualThe VITS inserter can also insert a one-line source identification code on any ofthe av

Appendix A: OptionsA–4VITS100 NTSC VITS Inserter Instruction ManualTable A–2: Option 1J Factory Programmed VITS Insertions Line Field Signal17 1 FCC C

Appendix A: OptionsVITS100 NTSC VITS Inserter Instruction ManualA–5VITS InserterProgram In Program Out Monitor OutVITS InserterProgram InProgram OutVM

Appendix A: OptionsA–6VITS100 NTSC VITS Inserter Instruction ManualOption 2VITS100 NTSC VITS Inserter Option 2 generates Cable Sweep and CableMultibur

Appendix A: OptionsVITS100 NTSC VITS Inserter Instruction ManualA–7–400 9.5 15.717.223.2 30.6 45.4 52.854.2 61.98ms100500mV0mV0.5 1.25 2.0 3.0 3.75 4.

Appendix A: OptionsA–8VITS100 NTSC VITS Inserter Instruction ManualTable A–6 lists the factory configuration (through DIP switches S1–S4) of theOption

Index

VITS100 NTSC VITS Inserter Instruction ManualIndex–1IndexAAccessories, 1–2Auto VIRS, 1–2, 2–4BBypass, 2–1lockout, 7–5remote control of, 2–8, A–4CCable

IndexIndex–2VITS100 NTSC VITS Inserter Instruction Manualwaveform diagrams, 3–12

Getting StartedVITS100 NTSC VITS Inserter Instruction Manual1–3Functional Check and InstallationIt is good practice to perform a functional check of a

Getting Started1–4VITS100 NTSC VITS Inserter Instruction Manual7. While watching the waveform monitor display, repeatedly press the VITSinserter BYPAS

Getting StartedVITS100 NTSC VITS Inserter Instruction Manual1–5You can mount the VITS inserter in a standard equipment rack or custom installit. In cu

Getting Started1–6VITS100 NTSC VITS Inserter Instruction Manual

Operating Basics

VITS100 NTSC VITS Inserter Instruction Manual2–1Operating BasicsThe VITS100 NTSC VITS Inserter can generate any one of thirteen test signalsfor insert

Operating Basics2–2VITS100 NTSC VITS Inserter Instruction ManualRear PanelThe VITS100 NTSC VITS Inserter rear panel, shown in Figure 2–2, contains the

Operating BasicsVITS100 NTSC VITS Inserter Instruction Manual2–3The PROGRAM OUT connector is the program video output. Output video canhave user-selec

WARRANTYTektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanshipfor a period of one

Operating Basics2–4VITS100 NTSC VITS Inserter Instruction ManualIn addition to internally generated test signals, the VITS inserter can pass videosign

Operating BasicsVITS100 NTSC VITS Inserter Instruction Manual2–5The VITS100 NTSC VITS Inserter is configured during manufacture to insertthe signals l

Operating Basics2–6VITS100 NTSC VITS Inserter Instruction ManualScrews (2)CoverFigure 2–4: Location of VITS selection switchesSwitches S1 and S2 make

Operating BasicsVITS100 NTSC VITS Inserter Instruction Manual2–7The switch settings for signal selection are listed in Table 2–2. When a switchsegment

Operating Basics2–8VITS100 NTSC VITS Inserter Instruction ManualRemote ControlRemote control in the standard VITS100 NTSC VITS Inserter is limited tog

Specifications

VITS100 NTSC VITS Inserter Instruction Manual3–1SpecificationsThis section contains tables that list the specifications for the VITS100 NTSCVITS Inser

Specifications3–2VITS100 NTSC VITS Inserter Instruction ManualTable 3–1: Program channel characteristics (Cont.)Characteristic InformationPhase Matchi

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–3Table 3–4: FCC Composite characteristics Characteristic InformationTiming See Figure 3–5

Specifications3–4VITS100 NTSC VITS Inserter Instruction ManualTable 3–5: FCC Color Bars characteristicsCharacteristic InformationTiming See Figure 3–4

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–5Table 3–8: NTC7 Combination characteristics Characteristic InformationTiming See Figure

Specifications3–6VITS100 NTSC VITS Inserter Instruction ManualTable 3–9: NTC7 Composite characteristics Characteristic InformationTiming See Figure 3–

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–7Table 3–11: SIN X/X characteristics Characteristic InformationTiming See Figure 3–11Band

Specifications3–8VITS100 NTSC VITS Inserter Instruction ManualTable 3–14: Cable Sweep (Option 2) characteristics Characteristic InformationTiming See

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–9Table 3–16: Power Supply characteristics Characteristic InformationOutput Voltages +5 V

Specifications3–10VITS100 NTSC VITS Inserter Instruction ManualTable 3–18: Environmental characteristics Characteristic InformationTemperatureNon-Oper

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–11Table 3–19: Certifications and compliances Category Standards or descriptionEC Declarat

Specifications3–12VITS100 NTSC VITS Inserter Instruction ManualTable 3–19: Certifications and compliances (Cont.)Category Standards or descriptionAddi

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–13Figure 3–2: 7.5% BlackFigure 3–3: 50% Gray

Service AssuranceIf you have not already purchased Service Assurance for this product, you may do so at any time during the product’swarranty period.

Specifications3–14VITS100 NTSC VITS Inserter Instruction ManualFigure 3–4: FCC Color BarsFigure 3–5: FCC Composite

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–15Figure 3–6: MultiburstFigure 3–7: Multipulse

Specifications3–16VITS100 NTSC VITS Inserter Instruction ManualFigure 3–8: NTC7 CombinationFigure 3–9: NTC7 Composite

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–17Figure 3–10: Red FieldFigure 3–11: SIN X/X

Specifications3–18VITS100 NTSC VITS Inserter Instruction ManualFigure 3–12: VIRSFigure 3–13: Cable Multiburst

SpecificationsVITS100 NTSC VITS Inserter Instruction Manual3–19Figure 3–14: Cable Sweep

Specifications3–20VITS100 NTSC VITS Inserter Instruction Manual

The following servicing instructions are for use only by qualified personnel. Toavoid injury, do not perform any servicing other than that stated in t

Theory of Operation

VITS100 NTSC VITS Inserter Instruction Manual4–1Theory of OperationThis section of the manual begins with a functional description of the circuitry.Th

Theory of Operation4–2VITS100 NTSC VITS Inserter Instruction ManualThe power inductor is driven by switching the voltage to its primary winding onand

Theory of OperationVITS100 NTSC VITS Inserter Instruction Manual4–3samples. The outputs of U4 and U5 are multiplexed by U82 and U83 to increasethe dat

Theory of Operation4–4VITS100 NTSC VITS Inserter Instruction ManualThe Input Buffer, U42, also drives the genlock analog-to-digital converter(ADC), U4

Theory of OperationVITS100 NTSC VITS Inserter Instruction Manual4–5The circuitry that controls signal switching appears on three of the schematicdiagr

Theory of Operation4–6VITS100 NTSC VITS Inserter Instruction ManualDiagram 1. U12 and U15 form a state machine to generate the data for shapedpulse ed

Theory of OperationVITS100 NTSC VITS Inserter Instruction Manual4–7RT1is a thermistor that limits inrush current on power-up. RV1 is metal-oxide-varis

Theory of Operation4–8VITS100 NTSC VITS Inserter Instruction ManualCurrent InprimaryCurrent InsecondariesVoltage acrossprimaryVoltage across+5 V secon

Theory of OperationVITS100 NTSC VITS Inserter Instruction Manual4–9The Pulse Width Modulator, U78, is a current-mode controller. Using inputsfrom the

VITS100 NTSC VITS Inserter Instruction ManualiTable of ContentsGeneral Safety Summary vii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Theory of Operation4–10VITS100 NTSC VITS Inserter Instruction ManualThese requirements are met by using a FET, Q17, in the emitter circuit to turnQ16

Performance Verification

VITS100 NTSC VITS Inserter Instruction Manual5–1Performance VerificationThis section contains procedures for verifying that the VITS100 NTSC VITSInser

Performance Verification5–2VITS100 NTSC VITS Inserter Instruction ManualEquipment RequiredTable 5–1 lists the test equipment recommended for Performan

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–3Table 5–1: Equipment Required (Cont.)Item ExampleRequirements75 W Feed-Through

Performance Verification5–4VITS100 NTSC VITS Inserter Instruction Manual2. Select the NTC7 Composite signal from the television test signal generator.

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–5NOTE. The settings of S1-S2-S3-S4 dictate the signals, lines, and fields for t

Performance Verification5–6VITS100 NTSC VITS Inserter Instruction ManualRequirement: Stable VITS inserter operation over an AC input range of90–250 VH

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–7IREBlankinglevelFigure 5–3: Blanking level at 0 IRE6. Move the 75ĂW coaxial ca

Table of ContentsiiVITS100 NTSC VITS Inserter Instruction ManualCleaning and Inspection 7–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance Verification5–8VITS100 NTSC VITS Inserter Instruction ManualWaveform/Vector MonitorTSG/SPG75ĂWTerminatorSubcarrierOutEXTCW REFExt Ref75ĂWT

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–9Requirement: Phase error + 0°"1° at FSC.1. Turn off waveform/vector monit

Performance Verification5–10VITS100 NTSC VITS Inserter Instruction Manual5. Select the NTC7 Composite test signal from the television test signalgener

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–11Requirements:Differential gain v 0.2%Differential phase v 0.2_1. Select Relat

Performance Verification5–12VITS100 NTSC VITS Inserter Instruction Manual3. Remove the BNC female-to-female adaptor and connect the coaxial cablefrom

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–13Requirement: SCH phase + 0_"5_.1. Select the video measurement set SCH P

Performance Verification5–14VITS100 NTSC VITS Inserter Instruction ManualNoisegeneratorVITS InserterTelevision test signal generatorVideo measurement

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–15Requirement: Chrominance risetime + 300 ns "35 ns1. Turn on the waveform

Performance Verification5–16VITS100 NTSC VITS Inserter Instruction Manual8. Set the VITS inserter VITS Selection DIP switches S2 and S4 for the redfie

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–1730. Change the coaxial cable from the TSG/SPG color bar output to the blackbu

Table of ContentsVITS100 NTSC VITS Inserter Instruction ManualiiiList of FiguresFigure 1–1: A setup for the functional check 1–3. . . . . . . . . . .

Performance Verification5–18VITS100 NTSC VITS Inserter Instruction ManualRequirements:Return loss 36 dB to 5 MHz.Spurious signals 55 dB downNOTE. Su

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–1910. Adjust the spectrum analyzer external attenuation amplitude by the amount

Performance Verification5–20VITS100 NTSC VITS Inserter Instruction Manual27. Connect a 50 W-to-75 W minimum loss attenuator to the spectrum analyzerRF

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–212. Set the TSG/SPG Multiburst output as shown in Table 5–4.Table 5–4: Multibu

Performance Verification5–22VITS100 NTSC VITS Inserter Instruction Manual9. Connect the coaxial cable from the TSG/SPG multiburst output to the VITSin

Performance VerificationVITS100 NTSC VITS Inserter Instruction Manual5–233. Set the waveform/vector monitor line select to line 19, all fields.4. Chec

Performance Verification5–24VITS100 NTSC VITS Inserter Instruction Manual5. Check that the VIRS signal disappears and the VITS inserter front-panelBYP

Adjustment Procedure

VITS100 NTSC VITS Inserter Instruction Manual6–1Adjustment ProceduresIf VITS100 NTSC VITS Inserter performance is not within tolerance for aparticular