Tektronix VITS100 - Manual

Tektronix VITS100

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Table of Contents:

  • Page 3 – WARRANTY
  • Page 5 – Service Assurance; Service Assurance Advantages
  • Page 7 – VITS 100 NTSC VITS Inserter Instruction Manual; Table of Contents; General Safety Summary
  • Page 8 – ii; Replaceable Electrical Parts
  • Page 9 – iii; List of Figures
  • Page 10 – iv
  • Page 11 – List of Tables
  • Page 13 – Only qualified personnel should perform service procedures.; To Avoid Fire or
  • Page 14 – viii; Terms on the Product.; These terms may appear on the product:; Symbols on the Product.; The following symbols may appear on the product:
  • Page 15 – ix; Service Safety Summary; Do Not Service Alone.
  • Page 17 – Getting Started
  • Page 19 – VITS Inserter Functions; Test Signals
  • Page 20 – Accessories and Options; This instrument is shipped with the following accessories:; Source ID
  • Page 21 – Functional Check and Installation; as shown in Figure 1–1.; Figure 1–1: A setup for the functional check; VITS inserter PROGRAM OUT waveform.; Functional Check
  • Page 22 – Table 1–1: Factory VITS, Standard and Option 1M
  • Page 23 – Connect the VITS inserter to your system as shown in Figure 1–2.; Figure 1–2: A typical installation; Installation
  • Page 25 – Operating Basics
  • Page 27 – Front Panel; Figure 2–1: The front panel; BYPASS
  • Page 28 – Rear Panel; Figure 2–2: VITS 100 NTSC VITS Inserter rear panel; This instrument uses a power supply that accepts line voltages; Power
  • Page 29 – Insertion Options; Program Out
  • Page 30 – Figure 2–3: VITS 100 NTSC VITS Inserter source ID signal; Passing Program Video
  • Page 31 – Table 2–1: Standard Factory-Programmed Signals; VITS Selection; Factory Configuration
  • Page 32 – Figure 2–4: Location of VITS selection switches; Figure 2–5: The VITS selection DIP switches; Switch/Line Assignments
  • Page 33 – Table 2–2: DIP Switch Settings; Switch Settings
  • Page 34 – Remote Control; Figure 2–6: The REMOTE connector
  • Page 35 – Specifications
  • Page 37 – Specification Tables; Table 3–1: Program channel characteristics
  • Page 38 – Table 3–2: Test Signal and Black Burst general characteristics
  • Page 39 – Table 3–4: FCC Composite characteristics
  • Page 40 – Table 3–5: FCC Color Bars characteristics
  • Page 41 – Table 3–8: NTC7 Combination characteristics
  • Page 42 – Table 3–9: NTC7 Composite characteristics; Table 3–10: Red Field characteristics
  • Page 43 – Table 3–12: Vertical Interval Reference Signal characteristics
  • Page 44 – Table 3–15: Genlock characteristics
  • Page 45 – Table 3–16: Power Supply characteristics; Table 3–17: Physical characteristics
  • Page 46 – Table 3–18: Environmental characteristics
  • Page 47 – Table 3–19: Certifications and compliances
  • Page 48 – Waveform Diagrams
  • Page 50 – Figure 3–4: FCC Color Bars
  • Page 51 – Figure 3–6: Multiburst
  • Page 52 – Figure 3–8: NTC7 Combination
  • Page 53 – Figure 3–10: Red Field
  • Page 54 – Figure 3–13: Cable Multiburst
  • Page 55 – Figure 3–14: Cable Sweep
  • Page 57 – WARNING
  • Page 59 – Theory of Operation
  • Page 61 – Functional Description; Test Signal Generation.
  • Page 62 – Circuit Description; Test Signal Generation
  • Page 63 – Genlock
  • Page 65 – Signal and Switching
  • Page 71 – Performance Verification
  • Page 73 – Incoming Inspection Test
  • Page 74 – Equipment Required; Table 5–1: Equipment Required
  • Page 75 – Verification Procedure; NOTE; Power Up
  • Page 76 – Select Waveform on the video measurement set.; Figure 5–1: VITS selection DIP switches; Select VITS
  • Page 77 – Table 5–2: DIP Switch Settings
  • Page 78 – Line Input Range
  • Page 79 – Figure 5–3: Blanking level at 0 IRE; Phase Match of
  • Page 80 – Figure 5–4: Equipment connections for phase matching
  • Page 81 – Set the burst vector to the outer circle and 0; Phase Match Bypass Path
  • Page 82 – Chrominance to
  • Page 83 – Differential
  • Page 84 – Figure 5–7: Using the video measurement set to compare signals; coaxial cable from the television test signal generator; Move the coax from VITS inserter PROGRAM OUT to MONITOR OUT.
  • Page 86 – Figure 5–8: Measuring hum rejection; Luminance Risetime
  • Page 87 – Chrominance Risetime
  • Page 90 – Set the spectrum analyzer Vertical Scale to 10 dB.; Return Loss and
  • Page 91 – Table 5–3: Spectrum Analyzer Settings
  • Page 92 – Figure 5–10: The initial frequency response setup; Frequency Response and
  • Page 93 – Table 5–4: Multiburst Controls; cable from the peak-to-peak detector output to the test; Figure 5–11: Frequency response display
  • Page 94 – Figure 5–12: Measuring frequency response; Auto VIRS Insertion
  • Page 95 – Set all 16 switches to the down position.
  • Page 97 – Adjustment Procedure
  • Page 99 – Adjustment Procedures; C before making any adjustments. Waveform illustrations in; Static Discharge Precautions
  • Page 100 – Table 6–1: Recommended Test Equipment
  • Page 101 – Preliminary Setup
  • Page 102 – Figure 6–1: Adjustments and test points
  • Page 103 – Check power supply tolerances as shown in Table 6–2.; Adjust genlock performance with the following steps.; Connect the Test Oscilloscope X10 probe to U44 Pin 18.; coaxial cable from the VITS inserter PROGRAM OUT to; Power Supply Adjustment
  • Page 104 – Figure 6–2: A setup for genlock adjustments; coaxial cable from the television test signal generator output; Move the coaxial cable from VITS inserter PROGRAM OUT to MONITOR
  • Page 105 – Figure 6–3: VITS selection DIP switches; Gain Adjustments
  • Page 106 – Figure 6–4: Equipment connections for gain adjustments; the bar portion of the signal. Note the amplitude.; Figure 6–5: Equipment for setting gain adjustments
  • Page 107 – Frequency Response
  • Page 108 – Control; coaxial cable from the detector head output to the peak-to-
  • Page 109 – Figure 6–7: Display for adjusting flatness; Figure 6–8: Setting flatness
  • Page 110 – Disconnect the X10 probe from the VITS inserter TP 11.; Oscillator Adjustment
  • Page 111 – Maintenance
  • Page 113 – Removal and Replacement Instructions (page 7–8); Service Strategy; Warranty Repair Service
  • Page 114 – Preparation; Static discharge can damage any semiconductor component in this; Repair Service
  • Page 115 – Whenever possible keep the component leads shorted together.; covering is capable of generating a static charge.; Use a soldering iron that is connected to earth ground.
  • Page 116 – Circuit Board Jumpers; symbol imprinted on the circuit board.; Figure 7–1: Moveable plug jumpers on the inserter circuit board
  • Page 117 – Table 7–1: Mode Selection Jumpers; symbol printed on the circuit; Mode Selection Jumpers
  • Page 118 – Table 7–2: Test Jumpers
  • Page 119 – Cleaning and Inspection; use commercial cleaners that can discolor or damage the finish.; Cleaning
  • Page 120 – Removal and Replacement Instructions; removing the top cover.; Remove the four screws from each side of the instrument.; Top Cover
  • Page 121 – Install the hex nuts on the three rear-panel BNC connectors.; Inserter Circuit Board
  • Page 122 – Figure 7–2: Mounting hardware for the inserter circuit board; This procedure requires a #2 POZIDRIV; Oscillator Circuit Board
  • Page 123 – Diagnostics
  • Page 124 – Table 7–3: The User Diagnostics
  • Page 129 – Parts Ordering Information
  • Page 130 – Parts List Column Descriptions
  • Page 131 – Manufacturers Cross Index, Electrical Parts
  • Page 135 – Replaceable Electrical Parts List
  • Page 157 – Diagrams
  • Page 162 – Table 9–2: A1A1 Component Locator
  • Page 187 – Replaceable Mechanical Parts
  • Page 190 – Abbreviations
  • Page 191 – Manufacturers Cross Index, Mechanical Parts
  • Page 192 – Replaceable Mechanical Parts List
  • Page 194 – Figure 10–1: Exploded view
  • Page 195 – Appendix
  • Page 198 – Option 1J; Red Field, with modified luminance and chrominance amplitudes; Figure A–1: Option 1J Red Field signal; Signal Characteristics
  • Page 199 – Figure A–2: Option 1J FCC Color Bar signal
  • Page 200 – Table A–2: Option 1J Factory Programmed VITS Insertions; Option 1M; Making Measurements
  • Page 201 – Figure A–4: Video Measurement Set application for Option 1M; Option 1M Signals
  • Page 202 – Option 2; Table A–4: Option 2 DIP Switch Settings; Table A–5: Cable System Test Signal Characteristics
  • Page 203 – Figure A–5: Cable Multiburst
  • Page 204 – Table A–6: Option 2 Factory Programmed VITS Insertions
  • Page 205 – Index
  • Page 207 – Index–1
  • Page 208 – Index–2
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Instruction Manual

VITS100
NTSC VITS Inserter

070-8333-02

Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

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Summary

Page 3 - WARRANTY

WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanshipfor a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix,at its option, either will repair the defect...

Page 5 - Service Assurance; Service Assurance Advantages

Service Assurance If you have not already purchased Service Assurance for this product, you may do so at any time during the product’swarranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs. Repair Protection extends priority repair services beyond t...

Page 7 - VITS 100 NTSC VITS Inserter Instruction Manual; Table of Contents; General Safety Summary

VITS 100 NTSC VITS Inserter Instruction Manual i Table of Contents General Safety Summary vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary ix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Getting Started VITS Inserter Func...

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