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
Theory of Operation DC Power Distribution
Page: 4-14 888-2604-001 03/08/07
WARNING: Disconnect primary power prior to servicing.
4.5 DC Power Distribution
This material is intended to give an overview of dc power distribution in the APEX exciter.
4.5.1 Main Power Supply
The main power supply is located in the left rear side of the analog (top) section of the
exciter. The main power supply voltages and their destinations are listed in Table 4-3.
4.5.2 Digital Deck Power
All power for the digital (lower) deck of the exciter enters the controller board at J6.
Refer to Figure 5-2, on page 5-3. From the controller board the power branches out to the
other digital boards in the following fashion.
• Controller board to modulator board.
• Controller board to adaptive corrector board to ADC and DAC boards.
• Controller board to external I/O board.
• Controller board to front panel board.
4.5.2.1 Controller Board Power
All power for the digital (lower) deck of the exciter enters the controller board at J6. J6 is
mounted on the chassis side of the board and protrudes through the deck to the top side,
where it receives +5 Vdc from the power supply on pins 9 through 15. The 5Vdc return
(ground) is via pins 1 through 8. This is the 5 Vdc entry on the screen.
+5 Vdc is supplied to the following other boards:
• The modulator board.
• The adaptive precorrector board.
• The external I/O board.
• The front panel display board.
The +5 Vdc also operates the 3.3 volt dc to dc converter. +3.3 Vdc from this board is
supplied to the following boards:
• The external I/O board.
• The front panel display board.
Table 4-3 Exciter Power Supply Voltages
Voltage Use PS Jack and Pin Destination Jack and Pin
+5 Vdc Power for digital tray SK3 pin 2 Controller, J6 pins 10 - 13
Common for +5 V SK3 pin 1 Controller, J6 pins 1 - 4
+15 Power for analog tray SK2 pins 1 - 2 UDC Interface, J4 pins 1 - 2
-15 Power for analog tray SK2 pin 6 UDC Interface, J4 pin 6
Common for +/- 15 Vdc SK2 pins 3 - 5 UDC Interface, J4 pins 3 - 5
+15 Vdc Float Fan power SK2 pin 8 UDC Interface, J4 pin 8
Common for +15 Vdc Float SK2 pin 9 UDC Interface, J4 pin 9