Specifications
Table Of Contents
- Title Page
- Table of Contents
- List of Figures
- List of Tables
- 1 Introduction
- 2 Installation
- 3 Navigating the LCD Display Screens
- 3.1 Basic Operating Procedure
- 3.2 Starting Point: The Main LCD Touch Screen
- 3.3 LCD Display Flow Chart
- 3.4 Details of the Exciter Status Screens
- 3.4.1 System Status Screen
- 3.4.2 Transport Stream Status Screen
- 3.4.3 Adaptive Processing Board Status Screen
- 3.4.4 Digital Processing Screens
- 3.4.4.1 Modulator Board Status, Screen 1/2
- 3.4.4.2 ADC and DAC Boards Status, Screen 2/2
- 3.4.4.3 FLO FPGA Status, Summary, Screen 1/5
- 3.4.4.4 FLO FPGA, GPS & Clock Status, Screen 2/5
- 3.4.4.5 FLO FPGA, Transport Stream Status, Screen 3/5
- 3.4.4.6 FLO FPGA, SFN FIFO Status, Screen 4/5
- 3.4.4.7 FLO FPGA, MTI Status, Screen 5/5
- 3.4.5 IF & RF Processing Status Screens
- 3.4.6 System Control Status Screens
- 3.5 Built In Tests
- 3.6 Details of the System Setup Screens
- 3.7 RTAC Operating Procedures, Main Screen.
- 4 Theory of Operation
- 5 Maintenance and Troubleshooting
- 5.1 Exciter Maintenance
- 5.2 Loading Software
- 5.3 Default Settings For DIagnostics Screens
- 5.4 Typical Settings for the More Critical Exciter Setups
- 5.5 Exciter Troubleshooting Flow Charts
- 5.6 General Troubleshooting
- 5.7 System Troubleshooting
- 5.8 Exciter Troubleshooting
- 6 Parts List
- Appendix A Exciter GUI Screen Captures
APEX™ Exciter Incorporating FLO™ Technology
Table of Contents
2604s100TOC.fm
03/08/07 888-2604-001 Page: xiii
WARNING: Disconnect primary power prior to servicing.
5.3 Default Settings For DIagnostics Screens. . . . . . . . . . . . . . . .5-10
5.4 Typical Settings for the More Critical Exciter Setups . . . . . . . . . . .5-11
5.5 Exciter Troubleshooting Flow Charts . . . . . . . . . . . . . . . . .5-12
5.6 General Troubleshooting . . . . . . . . . . . . . . . . . . . . . .5-16
5.6.1 Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.7 System Troubleshooting . . . . . . . . . . . . . . . . . . . . . .5-17
5.7.1 PA, HPF, or ADC Adaptive Processing Faults . . . . . . . . . . . . . 5-17
5.7.2 Transmitter Response Not Conforming to Mask Requirements . . . . 5-17
5.7.3 Checking Transmitter Spectrum . . . . . . . . . . . . . . . . . . . . 5-18
5.7.4 ASI Transport Stream Faults . . . . . . . . . . . . . . . . . . . . . . 5-18
5.8 Exciter Troubleshooting . . . . . . . . . . . . . . . . . . . . . .5-19
5.8.1 Frequency Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.8.2 Dark Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
5.8.3 Power Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
5.8.4 Troubleshooting Down to the Board Level . . . . . . . . . . . . . . . 5-21
5.8.4.1 Digital Tray Transmission Data Path . . . . . . . . . . . . 5-21
5.8.4.2 Analog Tray Signal Path . . . . . . . . . . . . . . . . . . 5-21
5.8.5 Isolating Problem to the Analog or Digital Tray . . . . . . . . . . . . 5-21
5.8.5.1 Checking Operation of the Entire Digital Tray . . . . . . . 5-21
5.8.5.2 Checking Operation of the Entire Exciter. . . . . . . . . . 5-22
5.8.6 Isolating a Faulty Board in the Digital Tray . . . . . . . . . . . . . . 5-23
5.8.6.1 Modulator Board . . . . . . . . . . . . . . . . . . . . . . 5-23
5.8.6.2 Adaptive Precorrector Board . . . . . . . . . . . . . . . . 5-24
5.8.6.3 ADC and DAC Boards . . . . . . . . . . . . . . . . . . . 5-24
5.8.6.4 Front Panel Board . . . . . . . . . . . . . . . . . . . . . . 5-24
5.8.6.5 Controller Board . . . . . . . . . . . . . . . . . . . . . . 5-24
5.8.7 Analog Tray Troubleshooting. . . . . . . . . . . . . . . . . . . . . . 5-25
6 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Appendix AExciter GUI Screen Captures. . . . . . . . . . . . . . . . . . . . . . . . . . . A-1