User Manual
Table Of Contents
- Notices
- Contents
- Introduction
- Product Description
- Routine Operation
- 3.1 Chapter Overview
- 3.2 Overview of Controls, Indicators and Connectors
- 3.3 Preparing for Operation
- 3.4 Using the Display Screens
- 3.5 PTX-PRO Monitoring Operations
- 3.6 PTX-PRO Control Operations
- 3.7 Front Panel vs. Configurator Settings
- Troubleshooting
- Advanced Operation
- 5.1 Chapter Overview
- 5.2 Before You Begin
- 5.3 Create or Update a Configuration
- 5.3.1 Using the Configurator Software
- 5.3.2 Determine Licensed Options
- 5.3.3 Create New Configuration On-Line
- 5.3.4 Load and Modify Configuration Settings On- Line
- Figure 5-7: Load and Modify Configuration Settings On-Line - Sheet 1 of 5
- Figure 5-8: Load and Modify Configuration Settings On-Line - Sheet 2 of 5
- Figure 5-9: Load and Modify Configuration Settings On-Line - Sheet 3 of 5
- Figure 5-10: Load and Modify Configuration Settings On-Line - Sheet 4 of 5
- Figure 5-11: Load and Modify Configuration Settings On-Line - Sheet 5 of 5
- 5.3.5 Load Configuration File into Radio On-Line
- 5.3.6 Change Preset Names in On-Line Mode
- 5.3.7 Create Channel Plan Offline
- 5.3.8 Modify Channel Plan in Offline Mode
- 5.3.9 Load and Modify a Channel Plan On-Line
- 5.3.10 Load Channel Plan File into Radio On-Line
- 5.3.11 Add Licensed Option
- Installation
- 6.1 Chapter Overview
- 6.2 Unpacking
- 6.3 Initial Inspection
- 6.4 Damage in Shipment
- 6.5 Mounting and Cabling
- 6.6 Power Connections
- 6.7 Grounding
- 6.8 Audio Connections
- 6.9 Signal Connections
- 6.10 Data Connections
- 6.11 Powering Up
- 6.12 Configurator Software Installation
- 6.13 Product Modifications
- Replacement Parts
- Theory of Operation
- Index
8
Theory of Operation 8-1PTX-PRO User and Technical Manual
Theory of Operation
8.1 Chapter Overview
This chapter provides technical details about the design and
functioning of the PTX-PRO 13 GHz Transmitter (PTX-PRO).
This chapter is intended to complement information contained in
the “Product Description” Chapter on page 2-1.
The descriptions in this chapter assume you are already familiar
with the information contained in Chapter 2. We recommend
that you review Chapter 2 before beginning to read this one.
Here are the topics covered:
8.2 System Architecture
The PTX-PRO is designed around a flexible, modular
architecture. The overall PTX-PRO system architecture for a
PTX-PRO is shown in Figure 8-1.
The PTX-PRO is a versatile portable transmitter designed to
accept an IF 70 MHz input signal or composite video signal,
audio signals, or SD/HD SDI signals or ASI/SDI signals from
external sources and to provide a 13 GHz microwave signal
output.
Topic Page
System Architecture 8-1
System Theory of Operation 8-2
Command and Control Power Supply 8-2
MPEG/COFDM Encoder/Modulator Module 8-2
Figure 8-1: PTX-PRO System Architecture
All configurations are available with either NTSC or PAL system
modulation.
PTX-PRO key features are:
• RF output high/low power selection for 13 GHz operation
• System modulation scheme:
Digital: COFDM or LMS-T
• COFDM Modulation:
Selectable 6, 7, or 8 MHz bandwidth
QPSK, 16 QAM, or 64 QAM
• COFDM Modulation with selectable Guard Interval
technology (1/4, 1/8, 1/16/ or 1/32)
• Forward Error Correction (FEC) (1/2, 3/5, 5/6, or 7/8)
• MPEG encoding with SD and optional HD video solution
technologies
• Front panel local control
• Wide choice of antennas.
PTX-PRO
TX System
RS-232
120/240 VAC, 50/60
Hz or +11.0 to +36.0
VDC
AUDIO/
AES/EBU
RF OUT
MONITOR
SDI/SD/
HD
SD I/ASI
IN P U T
SIGNAL
IN P U T