UBS Axcera 837B-5 Table of Contents

4-6 kW UHF Translator Table of Contents

TABLE OF CONTENTS

CHAPTER 1 INTRODUCTION

Section # Page #

1.1 Manual Overview................................................................................. 1-1

1.2 Assembly Designators .......................................................................... 1-1

1.3 Safety................................................................................................ 1-1

1.4 Maintenance ....................................................................................... 1-2

1.5 Material Return Procedure .................................................................... 1-2

1.6 Warranty for Axcera Products – Limited One-Year Warranty...................... 1-3

1.6 Introduction Material............................................................................ 1-4

CHAPTER 2 SYSTEM DESCRIPTION

2.1 System Overview ................................................................................ 2-1

2.1.1 UHF Exciter Assembly ................................................................. 2-1

2.1.2 2-3 kW Amplifier Arrays .............................................................. 2-2

2.1.2.1 (Optional) External Exhaust Kit ................................................. 2-4

2.1.3 Transmitter Output Assemblies .................................................... 2-4

2.2 Control and Status............................................................................... 2-5

2.2.1 UHF Exciter Tray ........................................................................ 2-6

2.2.2 UHF Amplifier Trays, LDMOS........................................................ 2-8

2.3 Input and Remote Connections ............................................................. 2-9

2.4 Main AC Input ....................................................................................2-13

CHAPTER 3 INSTALLATION AND SETUP PROCEDURES

3.1 Site Considerations.............................................................................. 3-1

3.2 Unpacking the Cabinets and Trays ......................................................... 3-4

3.3 Installing the Cabinets and Trays........................................................... 3-6

3.3.1 AC Connection to the UHF Exciter Cabinet ..................................... 3-6

3.3.2 AC Connection to the Amplifier Cabinets........................................ 3-6

3.3.2 AC Connection to the Amplifier Cabinets........................................ 3-6

3.3.2.1 Three Phase AC Connection to the Amplifier Cabinets ................... 3-6

3.3.2.2 Single Phase AC Connection to the Amplifier Cabinets .................. 3-7

3.3.3 Output Connections .................................................................... 3-7

3.4 Setup and Operation............................................................................ 3-8

CHAPTER 4 CIRCUIT DESCRIPTIONS

4.0 UHF Exciter Assembly .......................................................................... 4-1

4.0.1 Control and Status...................................................................... 4-1

4.0.2 RF, Baseband Input and Remote Connections ................................ 4-1

4.0.3 AC Input ................................................................................... 4-2

4.1 UHF/VHF Receiver Tray ........................................................................ 4-2

4.1.1 (A7) Filter.................................................................................. 4-3

4.1.2 Dual Stage Amplifier Assembly..................................................... 4-3

4.1.3 (A9) Channel Filter ..................................................................... 4-3

4.1.4 Downconverter Amplifier Assembly ............................................... 4-3

4.1.5 Channel Oscillator Assembly ........................................................ 4-3

4.1.6 (A5-A1) Multiplier Board.............................................................. 4-4

4.1.7 (A6) LO Filter............................................................................. 4-4

4.1.8 IF Filter/ALC Board ..................................................................... 4-4

837B, Rev. 0 i February 24, 2003

4-6 kW UHF Translator Table of Contents

TABLE OF CONTENTS (continued)

Section # Page #

4.1.9 (Optional) SAW Filter/Amplifier Board ........................................... 4-4

4.1.10 (Optional) IF Amplifier Board...................................................... 4-5

4.1.11 (Optional) IF Filter/Limiter Board ................................................ 4-5

4.1.12 (Optional) IF PLL Board ............................................................. 4-5

4.1.13 (Optional) IF Carrier Oven Oscillator Board .................................. 4-5

4.1.14 +12V(3A)/-12V Power Supply Board ........................................... 4-6

4.2 UHF Exciter ........................................................................................ 4-6

4.2.1 (Optional) Aural IF Synthesizer Board, 4.5 MHz.............................. 4-6

4.2.2 (Optional) Sync Tip Clamp/Modulator Board................................... 4-8

4.2.3 (Optional) Delay Equalizer Board .................................................4-11

4.2.4 (Optional) IF Carrier Oven Oscillator Board ...................................4-12

4.2.5 ALC Board, NTSC.......................................................................4-13

4.2.6 IF Phase Corrector Board............................................................4-19

4.2.7 Transmitter Control Board ..........................................................4-21

4.2.8 Channel Oscillator Assembly, Dual Oven.......................................4-26

4.2.9 (Optional) VCXO Assembly, Dual Oven .........................................4-26

4.2.10 (Optional) EEPROM FSK Identifier Board .....................................4-27

4.2.11 (Optional) Composite 4.5-MHz Filter Board .................................4-27

4.2.12 (Optional) 4.5-MHz Bandpass Filter Board...................................4-28

4.2.13 +12V(4A)/-12V(1A) Power Supply Board....................................4-29

4.2.14 x8 Multiplier Enclosure .............................................................4-29

4.2.15 x8 Multiplier Board...................................................................4-30

4.2.16 UHF Filters..............................................................................4-30

4.2.17 UHF Upconverter Board ............................................................4-30

4.2.18 Power Entry Module Assembly ...................................................4-32

4.3 Variable Gain/Phase Trays ...................................................................4-32

4.3.1 Variable Gain/Phase Board .........................................................4-32

4.3.2 Metering Board .........................................................................4-33

4.3.3 Power Entry Module Assembly.....................................................4-33

4.3.4 +15V/-12V Power Supply Board ..................................................4-33

4.4 Metering Panel ...................................................................................4-33

4.4.1 Splitter Board ...........................................................................4-34

4.4.2 Visual/Aural Metering Board........................................................4-34

4.4.3 Dual Peak Detectors ..................................................................4-34

4.4.4 Detector Threshold Board ...........................................................4-34

4.4.5 Power Entry Module Assembly.....................................................4-35

4.4.6 ±12V Power Supply Board ..........................................................4-35

4.5 AC Distribution Assembly.....................................................................4-36

4.6 2-3 kW Amplifier Arrays ......................................................................4-36

Main AC............................................................................................4-37

4.7 UHF Amplifier Trays, LDMOS ................................................................4-38

4.7.1 Variable Gain/Phase Board Enclosure ...........................................4-38

4.7.2 Variable Gain/Phase Board .........................................................4-39

4.7.3 1-Watt Amplifier Board Assembly ................................................4-40

837B, Rev. 0 ii February 24, 2003