User's Manual

300-Watt Digital UHF Transmitter Table of Contents
DT830A, Rev. 1 iii November 1, 2002
TABLE OF CONTENTS (continued)
5.3 8-VSB Modulator....................................................................................5-8
5.3.1 VSB Modulator Interface Board......................................................5-9
5.3.2 VSB Symbol Generator Board........................................................5-9
5.3.3 VSB Filter Board......................................................................... 5-11
5.3.4 Switch Board ............................................................................. 5-13
5.3.5 Local Oscillator Board ................................................................. 5-13
5.3.6 VSB Vector Modulator Board ....................................................... 5-14
5.3.7 DC Power Supply Board .............................................................. 5-14
5.3.8 VSB IF Filter Board..................................................................... 5-15
5.3.9 LED Board ................................................................................. 5-15
5.3.10 Offset Adjust............................................................................ 5-15
5.3.11 Local Oscillator Leak-Through Adjustment................................... 5-15
5.3.12 I and Q Baseband Frequency Response Adjustments.................... 5-16
5.3.13 Gain and Quadrature Adjustments ............................................. 5-16
5.3.14 Output Level Adjust.................................................................. 5-16
5.4 Output Power Level ............................................................................. 5-17
APPENDICES
APPENDIX A SAMPLE LOG REPORT SHEET
APPENDIX B TYPICAL OPERATIONAL READINGS
APPENDIX C ASSEMBLY DRAWINGS AND PARTS LISTS
APPENDIX D SUBASSEMBLY DRAWINGS AND PARTS LISTS
APPENDIX E DT830A SYSTEM SPECIFICATIONS