User's Manual Part 1
Table Of Contents
- System Manual
- R&S®NV830x DTV Transmitters ATSC
- Volume 1
- Contents
- Safety Instructions
- Design and Characteristics
- Contents
- 1 Design and Function
- 2 Specifications
- Installation
- Contents
- 1 Equipment Supplied 1
- 2 Overview 3
- 3 Setting Up Transmitter 4
- 4 Ventilation System 9
- 5 AC Power Supply 14
- 6 Amplifiers 19
- 7 Connecting Antenna/Dummy Antenna to RF Connector 20
- 8 Connection Panel 23
- 1 Equipment Supplied
- 2 Overview
- 3 Setting Up Transmitter
- 4 Ventilation System
- 5 AC Power Supply
- 6 Amplifiers
- 7 Connecting Antenna/Dummy Antenna to RF Connector
- 8 Connection Panel
- Contents
- Commissioning
- Contents
- 1 General Information 1
- 2 Preparing for Transmitter Startup 3
- 2.1 Preparing for Local Operation 3
- 2.2 Checking and Setting System and Operating Parameters 3
- 2.3 R&S NetCCU800 3
- 2.4 Setting Transmitter Type 9
- 2.5 Entering Exciter Settings 11
- 2.6 Entering Output Stage Settings 19
- 2.7 Setting Transmitter Output Power 21
- 2.8 Calibrating Power Displays 22
- 3 Completion of Startup Procedure 26
- 4 Precorrection 31
- 1 General Information
- 2 Preparing for Transmitter Startup
- 2.1 Preparing for Local Operation
- 2.2 Checking and Setting System and Operating Parameters
- 2.3 R&S NetCCU800
- 2.4 Setting Transmitter Type
- 2.5 Entering Exciter Settings
- 2.6 Entering Output Stage Settings
- 2.7 Setting Transmitter Output Power
- 2.8 Calibrating Power Displays
- 3 Completion of Startup Procedure
- 4 Precorrection
- Contents
Chapter 3 Installation
2098.0188.72 - 3.9 - E-1
4 Ventilation System
Note The ventilation system is already installed and wired inside the transmitter.
4.1 Connecting Air Intake/Exhaust Ducts
The intake and exhaust air outlets are located either on the top or bottom of the transmitter
rack, depending on your order specifications. The "Intake air from room" option is also avail-
able. In this case, the intake air is routed to the intake box via an integrated air filter on the
rear panel.
The external pressure drop must not exceed 100 Pa for the required air volume (e.g. for
R&S NV8304, 4 amplifiers: 17 m
2
/min).
As a result, a pipe system of max. 12 m in length (D = 250 mm), two 90° bends and an air
filter with a drop in discharge pressure of 40 Pa can be installed.
Note Always use pipes with a diameter of 250 mm.
Note Be sure to connect the intake and exhaust lines properly, otherwise the system may be-
come overheated.
The following drawings show the dimensioning on the top and base of the transmitter re-
quired for properly connecting the transmitter to the station.
ATTENTION!
The temperature of the cooling air must not drop below the dew point, otherwise conden-
sation may occur in the air shafts.
If intake air is fed in directly from outside the building, an air filter must be used.