User's Manual

3300-Watt VHF Low Band Transmitter Table of Contents
335B, Rev. 0 ii Oct 4, 2007
TABLE OF CONTENTS (continued)
SECTION PAGE
4.4 Harmonic Filter, Bandpass Filter and Coupler Assembly ...........................4-31
CHAPTER 5 DETAILED ALIGNMENT PROCEDURES
5.1 VHF Low-Band Exciter Tray with Baseband Video and Audio Inputs.............5-1
5.2 VHF Exciter Tray with 4.5-MHz Composite Input Kit ..................................5-2
5.3 VHF Exciter Tray with Either Baseband or 4.5-MHz Composite Input ...........5-2
5.4 IF Phase Corrector Adjustment ...............................................................5-3
5.5 Linearity Corrector Adjustment ...............................................................5-3
5.6 Low Band VHF Amplifier Trays ................................................................5-4
5.6.1 AGC Control Board .......................................................................5-5
5.6.2 Phase Shifter Board......................................................................5-5
5.6.3 VHF Filter/Amplifier Board .............................................................5-5
5.6.4 VHF Low Band Amplifier Board.......................................................5-5
5.6.5 Overdrive Protection Board............................................................5-5
5.6.6 3-Way Splitter Board ....................................................................5-6
5.6.7 VHF Low Band Pallet.....................................................................5-6
5.6.8 3-Way Combiner Board.................................................................5-6
5.6.9 Calibration of the Visual + Aural Output Power and VSWR Cutback....5-6
5.7 Phase and Gain Adjustment of Multiple VHF Amplifier Trays .......................5-7
5.8 Calibration of the Forward Output Level of the Transmitter ........................5-8
5.9 Calibration of the Reflected Output Level of the Transmitter.......................5-8
5.10 3-Way Combiner Assembly...................................................................5-9
5.11 Bandpass Filter Assembly .....................................................................5-9
5.12 Complete Board Level Alignment of the VHF Exciter ...............................5-9
5.12.1 (Optional) 4.5-MHz Composite Input Kit........................................5-9
5.12.2 Delay Equalizer Board .................................................................5-9
5.12.3 Composite 4.5-MHz Filter Board.................................................5-10
5.12.4 (Optional) 4.5-MHz Bandpass Filter Board...................................5-10
5.12.5 IF Carrier Oven Oscillator Board.................................................5-10
5.12.6 Sync Tip Clamp/Modulator Board ...............................................5-10
5.12.7 Aural IF Synthesizer Board, 4.5 MHz...........................................5-12
5.12.8 ALC Board (Part 1 of 2).............................................................5-13
5.12.9 IF Phase Corrector Board...........................................................5-14
5.12.10 ALC Board, NTSC (Part 2 of 2) .................................................5-14
5.12.11 Channel Oscillator Board, Dual Oven.........................................5-15
5.12.12 x2 Multiplier Board..................................................................5-15
5.12.13 VHF Filter/Mixer Board ............................................................5-16
5.12.14 VHF Low-Band Filter/Amplifier Board ........................................5-16
APPENDICES
APPENDIX A SYSTEM SPECIFICATIONS
APPENDIX B SAMPLE LOG REPORT SHEET AND TYPICAL READINGS
APPENDIX C ASSEMBLY PARTS LISTS
APPENDIX D SUBASSEMBLY PARTS LISTS