User's Manual
Table Of Contents
- 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
Details of the Exciter Status Screens Navigating the LCD Display Screens
2604s300.fm
03/08/07 888-2604-001 Page: 3-27
WARNING: Disconnect primary power prior to servicing.
3.4.6.2 External I/O Board Status Screen
ExternalIOStatus.bmp
Figure 3-25 External I/O Board Status Screen
The External I/O Board Status screen is shown in Figure 3-25, with screen entries listed
below. These entries represent the command inputs and the status and analog outputs that
enter and leave connector J1 of the external I/O board at the rear of the exciter.
• Analog 1: 0.000V refers to analog input 1.
• Analog 2: 0.000V refers to analog input 2.
• Analog 3: 0.000V refers to analog input 3.
• Analog 4: 0.000V refers to analog input 4.
• Output 1, Input 1, Output 2, and Input 2.
These are binary representations of the 16 digital input/output status channels. They
refer to the fact that 2 - 16 bit registers are required to handle the 16 status channels.
These entries are used for factory testing.
• Foldback: This in an analog input which tells the percent of exciter output power fold-
back, typically due to transmitter PA VSWR exceeding a preset level.
When VSWR foldback is active the foldback readout on the External I/O status page
will be yellow.
• Raise: (OFF or ON) When on, this input commands the exciter output power to raise.
• Lower: (OFF or ON) When on, this input commands the exciter output power to low-
er.
• Mute: (OFF or ON) Exciter RF output amplifier mute function status.
Off mode allows RF to flow through the output connector (J2) to the transmitter.
On (enabled) switches the RF output to connector J3, which has a test load.
In either mode a sample of the output is available at connector J4.
• EQ Hold: (Off or On) When on, this input places the three adaptive equalizer inputs,
shown on the main screen, to hold. This holds the adaptive equalizer (RTAC) to the
settings that existed when the hold command was given.
• Eq Reset: (Off or On) Normally off, when momentarily turned on the adaptive equal-
izer will be reset.