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Tables of Contents for Servicing Digital Hdtv Systems
Chapter/Section Title
Page #
Page Count
Digital HDTV System Operation
1
20
Digital Television Overview
1
1
HDTV Picture Quality
1
2
Introduction to the DTV Delivery Systems
3
3
VSB Transmission Operations
6
4
MPEG Compression Introduction
10
3
Predictive and Motion Encoding
13
1
Group of Pictures (GOP)
14
1
Hoffman Encoding
14
3
Digital Television Questions and Answers
17
2
Advanced Digital Entertainment
19
2
HDTV Test Equipment Requirements
21
20
Introduction
21
1
Chipper Check Overview for GE/RCA MM101 HDTV Chassis
21
5
Initialization and Customer Files
26
4
Chipper Check Notes
30
1
HDTV Test Equipment Requirements
30
11
HDTV Video and Digital Circuit Operation
41
24
Introduction
41
1
Video Signal Compression
41
2
Video Preprocessing
43
1
Sampling Technique
43
1
Quantization Techniques
44
1
Understanding Digital Video
44
9
Basic Microprocessor OPERATION
53
3
Memory Devices
56
1
Microprocessor Trouble shooting Tips
57
1
Clock Operation
58
1
Microprocessor Reset (Boot-Up)
59
4
Zenith HDTV Receiver Block Diagram
63
1
HDTV Receiver Notes
63
1
Major and Minor Channel Numbers
63
1
Analog Signal Reception Notes
64
1
HDTV Picture Viewing Devices
65
20
Introduction
65
1
Overview of HDTV Projection and Flat-Hanging Wall Screens
65
1
The Film SSD Sandwich
66
1
Projection TV Systems
66
15
Digital Signal Video Processing
81
4
HDTV Scanning Process Circuits
85
46
Introduction
85
1
HDTV Picture Format
85
1
HDTV Aspect Ratio
85
1
Progressive Scan Format
86
14
Digital Convergence
100
2
Convergence Controls
102
6
Vertical Yoke and CRT Beam Deflection
108
3
Vertical SYNC and Lock
111
6
Horizontal Output Circuit Operation
117
1
Function of Output Transistor
118
2
Horizontal Deflection Yoke
120
1
Yoke Series Capacitor
120
1
How The Output Stage Works
120
2
Horizontal Yoke Deflection
122
1
Using the Sencore HA2500 Horizontal System Analyzer
123
4
Collector and Drain Meter Interpretation
127
1
High Voltage/Deflection Regulator Problem Troubleshooting
127
4
Chroma and Video HDTV Circuits
131
24
Introduction
131
1
HDTV Chroma Circuitry Overview
131
1
Video Switching
132
1
Video Processing IC Chip
133
1
The S-Video Signal
134
1
Review of Color TV Video Processing
134
3
Video Processing (RCA MM101 Chassis)
137
3
Video Outputs
140
1
Video Processing Overview
140
1
CRT Management Overview
140
1
Scan Velocity Modulation
140
1
Zenith HDTV Video Circuit Operation
141
1
Video Processing Circuits
141
6
Video Input Switching Overview
147
2
IC Switching and Video Processing
149
1
Comb Filtering
149
2
Pioneer HDTV Digital Video Processing
151
4
HDTV Sync Separation and Double-Speed Circuit Operation
155
22
Introduction
155
1
Problems with Interlaced Scanning
155
1
Developing the HDTV Standard
155
1
Explanation of the HDTV 1125/60 Standard
156
1
HDTV Sync Waveform Observations
157
1
HDTV Sync and Timing Notes
158
1
Compressed Bit Stream Considerations
159
1
Analog TV Sync Signals Review
159
1
Horizontal Blanking Pulse
160
1
Horizontal Sync Pulse
160
1
The Composite Video Signal
161
1
3.58 MHz Color Burst Signal
161
1
Vertical Interval Test Signals (VITS)
162
1
Multiburst Test Signal
162
1
Line 18 VITS Test Signal
162
1
Vertical Interval Reference (VIR)
162
1
NTSC Signal Path
163
2
Signal Path For 1080I and 480P
165
1
Sync Detect Circuits for DTV/HDTV
165
1
Toshiba Projection HDTV Sync Circuitry
166
1
Syncronization Signal Flow
166
5
Sync Separation
171
1
The 32 fH Oscillator
171
1
Horizontal and Vertical Oscillation Circuit
171
2
The Double-Speed Circuit
173
2
Troubleshooting Tips
175
2
Electronic HDTV Tuners
177
26
Introduction
177
1
Basic Electronic Tuners
177
1
Input Filter Trap
178
2
RF Bandpass Network
180
1
Tuner Oscillator and Mixer Stages
180
1
MicroTuners-Tuner on a Chip
181
3
MicroTuner Technology Overview
184
1
Special Dual-Conversion Technique
184
1
MicroTuner Chip Design
185
1
Microtune Product Family
185
2
Single Versus Dual-Conversion MicroTuner Chips
187
3
Toshiba HDTV Tuner/RF Systems
190
3
Main Tuner Overview for RCA MM101 HDTV Chassis
193
4
PLL Frequency Synthesizer
197
1
The Tuning Process
198
5
Audio Systems Digital Signal Processing and Troubleshooting Techniques
203
20
Introduction
203
1
Basic Digital Audio Signal Processing
203
1
Binary Coding For Audio
204
2
Digital Signal Processing and D/A Conversion
206
2
HDTV Audio System Overview
208
1
MTS/Pro Circuit Description
208
5
Audio Performance Tests
213
3
Checking Stereo Frequency Response
216
2
Aligning the Stereo Decoder
218
1
Sound If and Detector Checks
219
1
Troubleshooting Audio Problems
219
1
Speaker Setup and Arrangement for an HDTV Home Theater
220
3
Digital HDTV Reception Problems and Antenna Requirements
223
20
Introduction
223
1
TV Antenna Review
223
1
The Quarter-Wave Stub to the Rescue
224
1
Circularly Polarized TV Signals
225
1
Receiving the Digital TV Signal
226
1
Chip May Solve HDTV Multipath Problem
227
3
TV Antenna Review
230
1
Antenna Construction Tips
231
1
Installing the Antenna
231
1
Sencore FS74 Channelizer-Signal Level Meter (SLM)
232
1
TV Signal Survey
232
1
Selector Map Program
233
1
Winegard Chromstar 2000 Antenna Series
233
2
Portable/Remote Satellite Antenna Dishes
235
8
HDTV Power Supplies
243
34
Introduction
243
1
Some Basic Power Supply Circuits
243
3
Switch-Mode/Pulse Width Modulated (PWM) Switching TV Power Supplies
246
1
Basic Switching Power Supply
247
1
DC Supply and AC Input Line Filter
248
2
Switching Transformer Operation
250
1
Typical (PWM) Drive Controller
250
2
Toshiba Projection HDTV Main Power Supply
252
6
Subpower Supply Operation
258
3
Oscillator Operation
261
1
Basic Shutdown Circuit Operation
262
5
+125 Volt Overcurrent Protection
267
1
Horizontal Stop Protection Circuit
268
2
+21 Volt Overvoltage Protection
270
1
+35 Volt Overcurrent Protection
270
2
-21 Overcurrent Protection
272
1
Switch-Mode Power Supply Troubleshooting
272
2
Scoping the Switch-Mode Power Supply Circuits
274
1
Notes on Special Solid-State Device Replacements
274
3
HDTV Satellite Systems and Set-Top Boxes
277
12
Introduction
277
1
DIRECTV High-Definition TV System
277
2
Overview of DIRECTV HDTV Satellite System
279
7
Samsung Set-Top Boxes
286
1
Panasonic DIRECTV HDTV Set-Top Box
287
1
Samsung Digital Set-Top Box
287
1
Microtune's MM8838 Micromodule Set-Top Box
288
1
Glossary
289