Tektronix VITS100 manuals

Tektronix VITS100 User Manual (208 pages)

Brand: Tektronix | Category: Processors | Size: 1.97 MB |

English

Table of contents

Instruction Manual

1

NTSC VITS Inserter

1

070-8333-02

1

WARRANTY

3

Service Assurance

5

Table of Contents

7

List of Figures

9

List of Tables

11

General Safety Summary

13

Service Safety Summary

15

Getting Started

17

Accessories and Options

20

Functional Check

21

Installation

23

Operating Basics

25

Rear Panel

28

Insertion Options

29

Passing Program Video

30

Auto VIRS

30

Inserting a Source ID

30

VITS Selection

31

Switch/Line Assignments

32

Switch Settings

33

Remote Control

34

Specifications

35

Waveform Diagrams

48

Figure 3–2: 7.5% Black

49

Figure 3–3: 50% Gray

49

Figure 3–4: FCC Color Bars

50

Figure 3–5: FCC Composite

50

Figure 3–6: Multiburst

51

Figure 3–7: Multipulse

51

Figure 3–8: NTC7 Combination

52

Figure 3–9: NTC7 Composite

52

Figure 3–10: Red Field

53

Figure 3–11: SIN X/X

53

Figure 3–12: VIRS

54

Figure 3–13: Cable Multiburst

54

Figure 3–14: Cable Sweep

55

Theory of Operation

59

Circuit Description

62

Signal and Switching

65

Source ID Generation

65

Power Supply

66

Performance Verification

71

Equipment Required

74

Verification Procedure

75

Select VITS

76

Line Input Range

78

Program Channel to

78

Test Signal Matching

78

Phase Match of

79

Inserted Test Signal to

79

Program Video Channel

79

Phase Match Bypass Path

81

Program Video Gain and

81

Line Tilt

81

Chrominance to

82

Luminance

82

Gain and Delay

82

Differential

83

Gain and Phase

83

Pulse-to-Bar Ratio

83

K-Factor

84

SCH Phase

85

Signal-to-Noise Ratio

85

Hum Rejection

85

Luminance Risetime

86

Chrominance Risetime

87

Genlock Checks

87

Return Loss and

90

Input/Output Impedance

90

Center Frequency 10 MHz

91

Reference Level 0 dB

91

Freq Span/Div 10 MHz

91

Frequency Response and

92

Crosstalk

92

Auto VIRS Insertion

94

Source ID

95

Adjustment Procedure

100

Preliminary Setup

101

Adjustment Procedures

102

Power Supply Adjustment

103

Genlock Adjustments

103

Gain Adjustments

105

Frequency Response

107

Adjustments

107

Frequency Range High

108

Markers On

108

Composite On

108

Amplitude Full

108

Sweep On

108

OUTPUTINPUT

109

Oscillator Adjustment

110

Maintenance

111

Preparation

114

Static Sensitive Components

114

Circuit Board Jumpers

116

Mode Selection Jumpers

117

Test Jumpers

117

Table 7–2: Test Jumpers

118

Cleaning and Inspection

119

Top Cover

120

Front Panel

120

Inserter Circuit Board

121

Oscillator Circuit Board

122

Removal/Replacement

122

Diagnostics

123

Replaceable Electrical Parts

127

Component Number

130

Subassembly Number

130

(optional)

130

Diagrams

157

  

159



159

Figure 9–2: A1A1 Oven Board

162

TEST SIGNAL MEMORY

163

TEST SIGNAL SELECT 2

165

P/O A1 INSERTER BOARD

167

CLAMP, AND SYNC

171

STRIPPER

171

VIDEO INPUT BUFFER

171

VIRS DETECT

171

A1A1 CRYSTAL OVEN BOARD

173

ANALOG OUTPUT 7

175

POWER SUPPLY 8

177

Replaceable Mechanical Parts

187

Abbreviations

190

Chassis Parts

190

Mfr. Code to Manufacturer

190

Cross Index

190

Figure 10–1: Exploded view

194

Appendix

195

Appendix A: Options

197

Option 1J

198

Factory Configuration

199

Option 1M

200

Option 1M Signals

201

Option 2

202

Figure A–5: Cable Multiburst

203

Figure A–6: Cable Sweep

203

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