Broadcasting Division System Manual Volume 1 R&S®NV830x DTV Transmitters ATSC Transmitter Series Nx8000 Only skilled personnel may perform the operations of the described instrument that are necessary for installing and putting it into operation as well as maintaining, troubleshooting and servicing it. Printed in Germany 2098.0188.72 -02 - 1.
System Manual Transmitter Series Nx8000 Edition: September 2009 Version: E 02.00 © 2009 Rohde&Schwarz GmbH & Co. KG 81671 Munich, Germany This document may be duplicated or otherwise used or its contents made known to third parties only with permission of the originator or other authorized persons. Infringements constitute an offence and are subject to claim for damages (UrhG, UWG, BGB). All rights reserved for patenting or utility model registration.
Qualitätszertifikat Certificate of quality Certificat de qualité Sehr geehrter Kunde, Sie haben sich für den Kauf eines Rohde & Schwarz-Produktes entschieden. Hiermit erhalten Sie ein nach modernsten Fertigungsmethoden hergestelltes Produkt. Es wurde nach den Regeln unseres Qualitätsmanagementsystems entwickelt, gefertigt und geprüft. Das Rohde & SchwarzQualitätsmanagementsystem ist u.a. nach ISO 9001 und ISO 14001 zertifiziert. Dear Customer, You have decided to buy a Rohde & Schwarz product.
12 Address List Headquarters, Plants and Subsidiaries Locations Worldwide Headquarters Please refer to our homepage: www.rohde-schwarz.com ◆ Sales Locations ◆ Service Locations ◆ National Websites ROHDE&SCHWARZ GmbH & Co. KG Mühldorfstraße 15 · D-81671 München P.O.Box 80 14 69 · D-81614 München Phone +49 (89) 41 29-0 Fax +49 (89) 41 29-121 64 info.rs@rohde-schwarz.com Plants ROHDE&SCHWARZ Messgerätebau GmbH Riedbachstraße 58 · D-87700 Memmingen P.O.
Customer Support Technical support – where and when you need it For quick, expert help with any Rohde & Schwarz equipment, contact one of our Customer Support Centers. A team of highly qualified engineers provides telephone support and will work with you to find a solution to your query on any aspect of the operation, programming or applications of Rohde & Schwarz equipment.
KONFORMITÄTSERKLÄRUNG gemäß dem Gesetz über Funkanlagen und Telekommunikationsendeinrichtungen (FTEG) und der Richtlinie 1999/5/EG (R&TTE) Anhang V, zertifiziert durch die Benannte Stelle CETECOM ICT Services GmbH, Reg. Nr. Q812137N DECLARATION OF CONFORMITY in accordance with the Radio and Telecommunications Terminal Equipment Act (FTEG) and Directive 1999/5/EC (R&TTE Directive) Annex V, certified by the Notified Body CETECOM ICT Services GmbH Germany, Reg. No. Q812137N Zertifikat-Nr.: / Certificate No.
KONFORMITÄTSERKLÄRUNG gemäß dem Gesetz über Funkanlagen und Telekommunikationsendeinrichtungen (FTEG) und der Richtlinie 1999/5/EG (R&TTE) Anhang V, zertifiziert durch die Benannte Stelle CETECOM ICT Services GmbH, Reg. Nr. Q812137N DECLARATION OF CONFORMITY in accordance with the Radio and Telecommunications Terminal Equipment Act (FTEG) and Directive 1999/5/EC (R&TTE Directive) Annex V, certified by the Notified Body CETECOM ICT Services GmbH Germany, Reg. No. Q812137N Zertifikat-Nr.: / Certificate No.
KONFORMITÄTSERKLÄRUNG gemäß dem Gesetz über Funkanlagen und Telekommunikationsendeinrichtungen (FTEG) und der Richtlinie 1999/5/EG (R&TTE) Anhang V, zertifiziert durch die Benannte Stelle CETECOM ICT Services GmbH, Reg. Nr. Q812137N DECLARATION OF CONFORMITY in accordance with the Radio and Telecommunications Terminal Equipment Act (FTEG) and Directive 1999/5/EC (R&TTE Directive) Annex V, certified by the Notified Body CETECOM ICT Services GmbH Germany, Reg. No. Q812137N Zertifikat-Nr.: / Certificate No.
KONFORMITÄTSERKLÄRUNG gemäß dem Gesetz über Funkanlagen und Telekommunikationsendeinrichtungen (FTEG) und der Richtlinie 1999/5/EG (R&TTE) Anhang V, zertifiziert durch die Benannte Stelle CETECOM ICT Services GmbH, Reg. Nr. Q812137N DECLARATION OF CONFORMITY in accordance with the Radio and Telecommunications Terminal Equipment Act (FTEG) and Directive 1999/5/EC (R&TTE Directive) Annex V, certified by the Notified Body CETECOM ICT Services GmbH Germany, Reg. No. Q812137N Zertifikat-Nr.: / Certificate No.
Für Betrieb im Europäischen Wirtschaftsraum (EWR) und zivilem Einsatz. Hinweis gemäß dem Gesetz über "Funkanlagen und Telekommunikationsendeinrichtungen" (FTEG) und der Europäischen Richtlinie 1999/5/EG: Dieses Produkt darf innerhalb des EWR nicht uneingeschränkt betrieben werden, da der verwendete Frequenzbereich auf nicht harmonisierten Bändern erfolgt. Nationale Vorschriften / Genehmigungen sind zu beachten.
NV830XE/V 2098.0188.72 CONTENTS SAFETY INSTRUCTIONS 1 DESIGN AND CHARACTERISTICS 2 INSTALLATION 3 COMMISSIONING 4 OPERATING 5 MAINTENANCE 6 TROUBLESHOOTING 7 SERVICE 8 INTERFACE DESCRIPTION 9 - 1.
Broadcasting Division CHAPTER 1 SAFETY INSTRUCTIONS Printed in Germany 2095.7346.32 - 1.
Sicherheitshinweise Kundeninformation zur Batterieverordnung (BattV) Dieses Gerät enthält eine schadstoffhaltige Batterie. Diese darf nicht mit dem Hausmüll entsorgt werden. Nach Ende der Lebensdauer darf die Entsorgung nur über eine Rohde&Schwarz-Kundendienststelle oder eine geeignete Sammelstelle erfolgen. Safety Regulations for Batteries (according to BattV) This equipment houses a battery containing harmful substances that must not be disposed of as normal household waste.
Chapter 1 Safety Instructions CONTENTS 1 About this Manual ............................................................................ 1 2 Safety Instructions for Transmitter Systems and Instruments ... 2 3 General Safety Instructions ............................................................ 3 4 Special Danger Warnings ............................................................... 4 4.1 Hazards due to AC Supply Voltage ...............................................................4 4.1.
Chapter 1 1 Safety Instructions About this Manual This manual is part of the documentation for the NX8000 family of transmitters from Rohde & Schwarz. Each transmitter and each transmitter component is described in a separate manual. The individual manuals of the family of transmitters are modular in structure and complement each other. Structure Each transmitter component is described in a separate manual and can thus be used as an individual component (where practical).
Chapter 1 2 Safety Instructions Safety Instructions for Transmitter Systems and Instruments ATTENTION! The safety instructions provided in this manual must be complied with! Pay special attention to the following points: Only skilled personnel may perform electrical installation and electrical connection tasks. Always follow the relevant national and international safety rules and regulations when equipping operating areas and when setting up and operating electrical equipment.
Chapter 1 3 Safety Instructions General Safety Instructions This section contains general safety instructions that apply to all products manufactured or distributed by Rohde & Schwarz. In accordance with IEC 215 and EN 60215, transmitters and their auxiliary equipment must be operated only under the responsibility of skilled personnel. The EN 60215 standard ("Safety requirements for radio transmitting equipment") defines the minimum requirements for skilled electrical personnel.
Basic Safety Instructions Always read through and comply with the following safety instructions! All plants and locations of the Rohde & Schwarz group of companies make every effort to keep the safety standards of our products up to date and to offer our customers the highest possible degree of safety. Our products and the auxiliary equipment they require are designed, built and tested in accordance with the safety standards that apply in each case.
Basic Safety Instructions Tags and their meaning The following signal words are used in the product documentation in order to warn the reader about risks and dangers. indicates a hazardous situation which, if not avoided, will result in death or serious injury. indicates a hazardous situation which, if not avoided, could result in death or serious injury. indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Basic Safety Instructions Electrical safety If the information on electrical safety is not observed either at all to the extent necessary, electric shock, fire and/or serious personal injury or death may occur. 1. Prior to switching on the product, always ensure that the nominal voltage setting on the product matches the nominal voltage of the AC supply network. If a different voltage is to be set, the power fuse of the product may have to be changed accordingly. 2.
Basic Safety Instructions 14. Use suitable overvoltage protection to ensure that no overvoltage (such as that caused by a bolt of lightning) can reach the product. Otherwise, the person operating the product will be exposed to the danger of an electric shock. 15. Any object that is not designed to be placed in the openings of the housing must not be used for this purpose. Doing so can cause short circuits inside the product and/or electric shocks, fire or injuries. 16.
Basic Safety Instructions Repair and service 1. The product may be opened only by authorized, specially trained personnel. Before any work is performed on the product or before the product is opened, it must be disconnected from the AC supply network. Otherwise, personnel will be exposed to the risk of an electric shock. 2. Adjustments, replacement of parts, maintenance and repair may be performed only by electrical experts authorized by Rohde & Schwarz.
Informaciones elementales de seguridad 2. Handles on the products are designed exclusively to enable personnel to transport the product. It is therefore not permissible to use handles to fasten the product to or on transport equipment such as cranes, fork lifts, wagons, etc. The user is responsible for securely fastening the products to or on the means of transport or lifting. Observe the safety regulations of the manufacturer of the means of transport or lifting.
Informaciones elementales de seguridad Se parte del uso correcto del producto para los fines definidos si el producto es utilizado conforme a las indicaciones de la correspondiente documentación del producto y dentro del margen de rendimiento definido (ver hoja de datos, documentación, informaciones de seguridad que siguen). El uso del producto hace necesarios conocimientos técnicos y ciertos conocimientos del idioma inglés.
Informaciones elementales de seguridad Palabras de señal y su significado En la documentación del producto se utilizan las siguientes palabras de señal con el fin de advertir contra riesgos y peligros. PELIGRO identifica un peligro inminente con riesgo elevado que provocará muerte o lesiones graves si no se evita. ADVERTENCIA identifica un posible peligro con riesgo medio de provocar muerte o lesiones (graves) si no se evita.
Informaciones elementales de seguridad Seguridad eléctrica Si no se siguen (o se siguen de modo insuficiente) las indicaciones del fabricante en cuanto a seguridad eléctrica, pueden producirse choques eléctricos, incendios y/o lesiones graves con posible consecuencia de muerte. 1. Antes de la puesta en marcha del producto se deberá comprobar siempre que la tensión preseleccionada en el producto coincida con la de la red de alimentación eléctrica.
Informaciones elementales de seguridad 12. Si un producto se instala en un lugar fijo, se deberá primero conectar el conductor de protección fijo con el conductor de protección del producto antes de hacer cualquier otra conexión. La instalación y la conexión deberán ser efectuadas por un electricista especializado. 13.
Informaciones elementales de seguridad 5. Ciertos productos, como p. ej. las instalaciones de radiocomunicación RF, pueden a causa de su función natural, emitir una radiación electromagnética aumentada. Deben tomarse todas las medidas necesarias para la protección de las mujeres embarazadas. También las personas con marcapasos pueden correr peligro a causa de la radiación electromagnética.
Informaciones elementales de seguridad 6. En caso de falta de estanqueidad de una celda, el líquido vertido no debe entrar en contacto con la piel ni los ojos. Si se produce contacto, lavar con agua abundante la zona afectada y avisar a un médico. 7. En caso de cambio o recarga inadecuados, las celdas o baterías que contienen electrolitos alcalinos (p. ej. las celdas de litio) pueden explotar.
Chapter 1 4 Special Danger Warnings 4.1 Hazards due to AC Supply Voltage Safety Instructions There is a risk of electric shock with any Vrms > 30 V AC or V > 60 V DC voltage. Appropriate measures must be taken to prevent exposure to any danger when working with voltages that bear the risk of electric shock. Never work on live parts unless specifically required and only if the special safety precautions are complied with. 4.1.
Chapter 1 4.1.2 Safety Instructions Replacing Fuses Replace the safety fuses accessible in the operator area only if no voltage is being ap- plied to the instruments. The safety fuses may be replaced only by fuses with identical electric data, identical switching characteristics and identical switch-off capacity. Motor and line circuit breakers accessible in the transmitter's operator area may be op- erated. If their response range is selectable, do not change the settings made by the manufacturer.
Chapter 1 Safety Instructions If you have to perform any work on the RF circuit, isolate the antenna connector as well. Caution! If other transmitters, etc, are in operation that are coupled to the same antenna via RF filters, energy from them can be fed back via the antenna cable. Never open a disconnected transmitter without taking protective measures against touching voltage-carrying parts.
Chapter 1 Safety Instructions quency hazards of the individual transmitter or instrument. Only after such training has been provided and documented may the operating personnel handle switching and operating tasks. High-energy RF circuits within the transmitter or the instrument are routed via conventional detachable RF connectors (e.g. N). Depending on the output power, the transmitter or instrument outputs come with screw-in or pluggable RF lines or ducts.
Chapter 1 Safety Instructions Labeling the workplace as subject to RF hazards Wearing RF protective cloth Taking special safety precautions for persons with implants such as metal parts, pace- makers, etc, since they are particularly susceptible to injury. 4.4 Fire Hazards Every electric circuit containing sufficient energy and to which voltage is applied poses fire hazards. This also applies to radio transmitters.
Chapter 1 5 Safety Instructions Safety Data Sheets for Hazardous Materials This section contains the following safety data sheets in accordance with guideline 91/155/ EEC: – EC safety data sheet for heat-conductive paste – EC safety data sheet for heat sink ribs HS-400 2098.1190.72 - 1.
Broadcasting Division CHAPTER 2 DESIGN AND CHARACTERISTICS Printed in Germany 2095.7346.32 - 2.
Chapter 2 Design and Characteristics CONTENTS 1 Design and Function ....................................................................... 1 1.1 Power Distribution ..........................................................................................5 1.1.1 Main Switch (Power Supply Terminal) .........................................................6 1.1.2 Motor Protection Switches ............................................................................6 1.1.3 Automatic Line Fuses ..............
Chapter 2 Design and Characteristics 2 Specifications ................................................................................ 31 2.1 Transmitter System – General .....................................................................31 2.2 Transmitter System – Specific ....................................................................32 2.2.1 R&S NV8301 ..............................................................................................32 2.2.2 R&S NV8302 ...............................
Chapter 2 1 Design and Characteristics Design and Function The new air-cooled R&S NV8300 transmitter family is designed for transmitting digital TV signals in the IV and V frequency bands (UHF). Digital standards DVB-T/-H, ATSC, DTMB, ISDB-T and MediaFLO can be transmitted. LDMOS transistor-based amplifiers ensure high output power while requiring only minimum space. For ATSC, output power of 500 W to 1.8 kW is available.
2098.0188.72 TS1 - 2.2 - Ext 1PPS TS4 TS3 TS2 TS1 Ext 1PPS TS4 TS3 TS2 Control 1pps 120MHz Control 1pps 120MHz PLL Coder Mainboard TV Exciter SX800 B Input Interface DTV 3 x TS PLL Coder Mainboard TV Exciter SX800 A Input Interface DTV 3 x TS I Q I Q Linear and nonlinear Precorrection Linear and nonlinear Precorrection Dig. IF 120MHz Dig. IQ Dig. IF 120MHz Dig. IQ Downconverter Synthesizer Upconverter Downconverter Synthesizer Upconverter RF N Ext.
Chapter 2 Design and Characteristics Fig. 2 Modules of DTV transmitter; here R&S NV8304 2098.0188.72 - 2.
Chapter 2 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) Design and Characteristics Connection panel Exciter Transmitter control unit Output stage Power distribution RF connector Directional coupler lightning protection system Splitter/combiner unit Harmonics filter Intake box (fan) The R&S NV8300 transmitter family consists of the following units and modules: Power distribution – Main switch – Motor protection switches – Automatic line fuses – Power distribution board – Auxiliary power supply unit – Optional socket
Chapter 2 Design and Characteristics – Splitter – Combiner – Absorber The output stage unit in this case only consists of one amplifier. 1.1 Power Distribution Fig. 3 Power distribution; here R&S NV8304 1) 2) 3) 4) 5) 6) 7) Main switch (power supply terminal) Motor protection switches Automatic line fuses Power distribution board Auxiliary power supply Optional socket Ground bolt The power distribution is designed for max.
Chapter 2 1.1.1 Design and Characteristics Main Switch (Power Supply Terminal) Fig. 4 Main switch The main switch fully disconnects the transmitter rack from the AC power supply. It is connected to three-phase alternating current and a neutral conductor. Note The main switch can be equipped with a padlock to prevent unauthorized persons from switching it off and on. Fig. 5 Main switch with fuse 1.1.2 Motor Protection Switches Fig.
Chapter 2 Design and Characteristics amplifiers. The arrangement of amplifiers and motor protection switches is shown on the front panel. The thermally activated overcurrent release of the motor protection switches is factory-set. 1.1.3 Automatic Line Fuses Fig. 7 Automatic line fuses The automatic line fuses are used to protect the power lines, e.g.
Chapter 2 1.1.4 Design and Characteristics Power Distribution Board Fig. 8 Power distribution board The power distribution board is directly connected to the automatic line fuses and contains transmitter-internal cables, which are hard-wired, as well as transmitter-external components (customer interfaces), to which you can connect external equipment. Note The appropriate dummy plugs are part of the transmitter and are located at the assigned positions.
Chapter 2 1.1.5 Design and Characteristics Auxiliary Power Supply Unit Fig. 9 Auxiliary power supply The primary task of the auxiliary power supply (+12 V) is to provide power to the additional control components in the rack. The required redundancy of this auxiliary voltage is generated via the exciters, which also output a +12 V current.
Chapter 2 1.1.6 Design and Characteristics Optional Socket Fig. 10 Optional socket The optional socket is not connected with the transmitter network and must be supplied by means of a separate power lead. 1.1.7 Grounding Bolt Fig. 11 Grounding bolt The grounding bolt connects the rack with the station's main grounding terminal. Note 2098.0188.72 The rack must be connected to the main grounding terminal in all cases. - 2.
Chapter 2 1.2 Design and Characteristics Transmitter Control Unit Fig. 12 Units used for transmitter control 1) R&S NetCCU800 2) Rack controller The transmitter control unit contains the following components: R&S NetCCU800 Rack controller They monitor and control the transmitter to ensure that it functions properly. 1.2.1 R&S NetCCU800 Fig. 13 R&S NetCCU800 The R&S NetCCU800 transmitter control unit handles internal and external communications, including all control functions.
Chapter 2 Design and Characteristics The rack controller is used to monitor, control, and protect the transmitter rack. It handles the following functions: Keeps the transmitter running if the R&S NetCCU800 fails Controls data exchange between the R&S NetCCU800 and other components via CAN bus Monitors the outlet air temperature Acquires measured data about the intake and outlet air temperatures Transfers messages Accepts and outputs rack commands (e.g.
Chapter 2 1.3 Design and Characteristics Connection Panel Fig. 15 Connection panel The baseband signals as well as the monitoring and remote-control connections are routed to the transmitter via the connection panel. 2098.0188.72 - 2.
Chapter 2 Design and Characteristics The following table describes the connection options: 1.4 Connection Description CANBUS X101A CAN bus data connection for additional racks or output stage A CANBUS X101B CAN bus data connection for additional racks or output stage B RS232 X232 Serial data connection for external BITBUS interface ETHERNET Remote LAN connector or system LAN connector, e.g.
Chapter 2 1.4.1 Design and Characteristics Exciter Fig. 17 Exciter The SX800 exciter is responsible for all signal processing of the transport stream signal up to and including an RF output signal conforming to standards. Note For detailed information about the exciter, refer to the exciter manual. 1.4.2 Exciter Switch Fig. 18 Exciter switch Note In transmitters with the exciter standby option (two exciters), the exciter switch is located behind the two exciters.
Chapter 2 Design and Characteristics Fig. 19 Equipment of output stage unit; here R&S NV8304 1) 2) 3) 4) Splitter Amplifiers Combiner Absorber The output stage unit contains the following components: Splitter Amplifier Combiner Absorber The diagram below shows the entire RF path from X.E. (splitter input) up to X.A. (combiner output). 2098.0188.72 - 2.
Chapter 2 Design and Characteristics Fig. 20 Block diagram of output stage unit: Example of the R&S NV8304 1.5.1 Splitter Note This section is not relevant for transmitters having only one amplifier in the rack. Fig. 21 Combiner (1) with splitter (2); here R&S NV8304 2098.0188.72 - 2.
Chapter 2 Design and Characteristics The splitter distributes the output signal of the exciter to the individual amplifiers. In addition, an integrated attenuator that is dependent on the number of outputs ensures that the RF signal is output at the right power level. The splitter is a broadband unit that operates in the frequency range 470 MHz to 862 MHz. 1.5.2 Amplifier Fig.
Chapter 2 Design and Characteristics Fig. 23 Combiner (1) with splitter (2); here R&S NV8304 The RF power output from the amplifiers is merged with the correct phase via the combiner. The combiner consists of a cascade of 90° hybrids housed in a single unit. 1.5.4 Absorber Note This section is not relevant for transmitters having only one amplifier in the rack. 2098.0188.72 - 2.
Chapter 2 Design and Characteristics Fig. 24 Absorber The absorber resistors (dummy loads) for the combiner are located on the absorber block. When the combiner is being operated in unbalanced mode (e.g. with one or more amplifiers disabled or removed) the non-combinable component of the RF power is expelled as additional heat energy via the transmitter exhaust duct. 2098.0188.72 - 2.
Chapter 2 1.6 Design and Characteristics Directional Coupler Lightning Protection System Fig.
Chapter 2 1.6.2 Design and Characteristics Directional Couplers Fig. 26 Directional couplers The forward and reflected power is detected at the transmitter output by means of the frequency-compensated directional couplers P14A (forward) and P14B (reflected). The frequency-compensated directional couplers output a power-proportional DC voltage to the R&S NetCCU800 transmitter control unit via the integrated rectifier circuit.
Chapter 2 1.6.3 Design and Characteristics Directional Coupler Interface Fig. 27 Directional coupler interface The free directional coupler interface can be used for connecting external power measuring instruments. 1.7 Harmonics Filter Fig. 28 Harmonics filter; here R&S NV8304 2098.0188.72 - 2.
Chapter 2 Design and Characteristics The FH 825 harmonics filter is used to suppress harmonics. It is a 23rd order Chebyshev filter which uses coaxial technology so that it is suitable for the rigid line system 13-30. On the signal path, the harmonics filter is located directly downstream of the combiner. Note The harmonics filter is varnished to reduce the surface temperature.
Chapter 2 1.9 Design and Characteristics Cooling System Fig. 30 Cooling system 1) 2) 3) 4) 5) Air intake duct Fan Starting capacitor Differential pressure gage Temperature sensor The cooling system consists of two built-in fans on active standby and contains the following components: Air intake/exhaust ducts Fans (2) Starting capacitors (2) Differential pressure gages (2) Temperature sensors (2) 2098.0188.72 - 2.
Chapter 2 1.9.1 Design and Characteristics Intake/Exhaust Air Ducts Fig. 31 Intake air duct (1) and exhaust air duct (2); here R&S NV8304 with option intake air from below The air from the intake duct is drawn in by the fans and forwarded to the distribution shaft. The distribution shaft provides enough air to each amplifier to cool it. The heated air is routed to an air collecting shaft on the opposite side of the amplifier and expelled via the exhaust duct. Note 2098.0188.
Chapter 2 Design and Characteristics If the intake is at the bottom, there is no intake duct. The connecting flange is then located directly beneath the fan box. If the exhaust air is directed downward, the absorber unit is situated at the bottom and feeds into the exhaust connection. 1.9.2 Fans Fig. 32 Fans A standard transmitter rack contains two fans, which adequately cool the transmitter with air.
Chapter 2 1.9.3 Design and Characteristics Starting Capacitors Fig. 33 Starting capacitor Each motor is equipped with an external starting capacitor. 2098.0188.72 - 2.
Chapter 2 1.9.4 Design and Characteristics Differential Pressure Gages Fig. 34 Differential pressure gages The differential pressure gages (diaphragm switches) measure the differential pressure of each fan between the fan flange (output) and the environment. Thus, fan malfunctions can be selectively sent to the transmitter control unit. 2098.0188.72 - 2.
Chapter 2 1.9.5 Design and Characteristics Temperature Sensors Fig. 35 Temperature sensors The temperature sensors measure the absolute intake and exhaust air temperatures in °C for display on the R&S NetCCU800 and monitoring in the rack controller. Note 2098.0188.72 If the exhaust temperature exceeds 65 °C, the rack controller switches off the rack due to the risk of overheating. - 2.
Chapter 2 2 Specifications 2.1 Transmitter System – General Design and Characteristics Frequency range ........................................ 470 MHz to 862 MHz Standard .................................................... ATSC Transmission bandwidth ............................ 6 MHz Voltage supply ........................................... 230 V / 400 V ± 15 % 47 Hz to 63 Hz Three-phase current (3W+N+PE) cos > 0.9 Power output stage ....................................
Chapter 2 Design and Characteristics and/or SNMP agent); optional parallel I/O Interface (floating contacts and commands); optional BitBus interface to IEC 864-2 Spurious emissions Harmonics ................................................. 70 dBc Spurious ..................................................... 60 dBc Noise power ratio .......................................
Chapter 2 Design and Characteristics Connection cross-section .......................... 2.5 mm2 / AWG 12 Backup fuse ............................................... 16 A to 20 A (setting value: 16 A) (Automatic line fuse, e.g. Siemens 3VL1702-1DD33) Connection cross-section .......................... 2.5 mm2 / AWG 12 Total weight (approx.) ................................ 235 kg 2.2.2 R&S NV8302 Number of amplifiers ................................. 2 Pout with MER 34 dB ............................
Chapter 2 Design and Characteristics Additional fuses Backup fuse (type NH gG) ......................... 3 x 20 A Connection cross-section .......................... 2.5 mm2 / AWG 10 Backup fuse ............................................... 16 A to 20 A (setting value: 20 A) (Automatic line fuse, e.g. Siemens 3VL1702-1DD33) Connection cross-section .......................... 2.5 mm2 / AWG 10 Total weight (approx.) ................................ 300 kg 2.2.4 R&S NV8304 Number of amplifiers .........
Broadcasting Division CHAPTER 3 INSTALLATION Printed in Germany 2095.7346.32 - 3.
Chapter 3 Installation CONTENTS 1 Equipment Supplied ........................................................................ 1 1.1 Integrated Transmitter Components ............................................................1 1.2 Transmitter Components Supplied Separately ...........................................2 2 Overview ........................................................................................... 3 3 Setting Up Transmitter ..........................................................
Chapter 3 Installation 7.2 Connecting Dummy Antenna ......................................................................21 8 Connection Panel .......................................................................... 23 2098.0188.72 - 3.
Chapter 3 1 Equipment Supplied 1.1 Integrated Transmitter Components Installation In the case of transmitters in the R&S NV8300E/V family, the following units and modules are already installed in the rack (depending on the equipment supplied): Note Use the tables below to check that all the relevant components have been supplied. Quantity Part name Type ID 1 Cabinet rack R&S KG830M1 2096.2002.02 1 Mid-range power distribution 1 R&S NetCCU800 R&S NetCCU800 2095.8007.
Chapter 3 Quantity Part name 1 Strain relief for AC supply feed Installation Type ID Options 1.2 1 Hazard button kit VAR: 11 = 1 button on front VAR: 12 = Button on front and rear VAR: 13 = Button on rear R&S ZR800N1 2099.4506.VAR 1 Parallel remote control interface R&S ZR800F1 3562.4210.02 1 External socket kit R&S ZR800Z1 2099.3000.02 1 Internal socket kit VAR: 14 = 4-socket low-temperature connector strip VAR: 16 = 6-socket low-temperature connector strip R&S ZR800Z2 2099.3100.
Chapter 3 2 Installation Overview The transmitter is installed by following the sequence given below: Setting up the transmitter – Checking the structure, flatness and general suitability of the installation surface – Preparing openings required in the floor (only with inlets and outlets from below) – Arranging the connections on the transmitter roof – Erecting the transmitter rack – Aligning the transmitter rack – Bolting the transmitter rack to the floor – Removing the front panels/rear panel – Unpa
Chapter 3 3 Installation Setting Up Transmitter Make sure that the transmitter is standing in a stable position and that ventilation is sufficient. Note During installation, the transmitter must be easily accessible from the front and rear. A clearance space of at least 1.2 m is necessary in order to install all components. 3.
Chapter 3 Installation Fig. 1 Transmitter floor dimensioning 1) 2) 3) 4) 5) 6) 7) 2098.0188.72 Adjustable foot (Ø 50) AC supply input Bottom intake (flange Ø178) Bottom exhaust (flange Ø178) Bottom RF output (ATV, 1 5/8 EIA) Bottom RF output (DTV, 1 5/8 EIA) Attachment hole (floor) - 3.
Chapter 3 3.1.3 Installation Arranging Connections on Transmitter Roof When making preparations for installing the station, please observe the following drawing of the transmitter roof. Fig. 2 Transmitter roof dimensioning 1) 2) 3) 4) 5) 6) 7) 2098.0188.72 Intake (flange Ø178) Exhaust (flange Ø178) Remote control interface Remote control interface (optional) Transmitter connection panel TS distributor RF output (1 5/8 EIA) - 3.
Chapter 3 3.2 Installation Erecting Transmitter Rack The transmitter rack can be set up using lift equipment (crane). Lifting eyes are attached to the rack roof for this purpose. Fig. 3 Lifting eyes WARNING! Do not stand under suspended racks, otherwise you could be crushed. Take the relevant safety precautions when climbing ladders, otherwise you could fall. 3.3 Aligning Transmitter Rack The rack must be aligned vertically and horizontally in order to prevent distortion caused by shearing forces.
Chapter 3 Installation Using a Torx screwdriver No. 20, remove all front panels and the rear panel from the rack. This allows you to reach all the necessary units, connectors and interfaces. Note Pay attention to the ground connections when removing and fitting the front panels and the rear panel. Fig. 4 Ground connection on a front panel 3.6 Unpacking Components Each transmitter component is packaged separately. Remove the packaging and arrange all equipment so that it is ready for installation.
Chapter 3 4 Ventilation System Note The ventilation system is already installed and wired inside the transmitter. 4.1 Connecting Air Intake/Exhaust Ducts Installation 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 available. In this case, the intake air is routed to the intake box via an integrated air filter on the rear panel.
Chapter 3 Installation Fig. 5 Transmitter roof dimensioning 1) 2) 3) 4) 5) 6) 7) 2098.0188.72 Intake (flange Ø178) Exhaust (flange Ø178) Remote control interface Remote control interface (optional) Transmitter connection panel TS distributor RF output (1 5/8 EIA) - 3.
Chapter 3 Installation Fig. 6 Transmitter floor dimensioning 1) 2) 3) 4) 5) 6) 7) 2098.0188.72 Adjustable foot (Ø 50) AC supply input Bottom intake (flange Ø178) Bottom exhaust (flange Ø178) Bottom RF output (ATV, 1 5/8 EIA) Bottom RF output (DTV, 1 5/8 EIA) Attachment hole (floor) - 3.
Chapter 3 Installation 4.2 Connecting External Backup Fan Note If conditions at the building site make it necessary to deal with larger distances (i.e. over 12 m), an external fan must be used. The transmitter provides a switched phase for controlling an external contactor. Furthermore if necessary you can connect an external motor protection switch with alarm button into the cooling disturbance circuit of the transmitter. Switched phase for external fan X33.1 = L (line protection 3A) X33.
Chapter 3 Installation Fig. 8 Ventilation opening Note The ventilation openings on vacant slots (without amplifiers) have to be closed. 4.4 Checking Differential Pressure Gages For the differential pressure gages to be able to measure the pressure between the fans and the environment, the covers must be removed. Make sure that the covers of both differential pressure gages on the left side have been removed. Fig. 9 Differential pressure gage without cover 2098.0188.72 - 3.
Chapter 3 5 Installation AC Power Supply The standard components of the transmitter are fully cabled together. The rack therefore simply needs to be connected to an external AC power supply. DANGER! Before you connect the transmitter, disconnect the external power supply cable from the power supply. General requirements The AC power load of the transmitter is determined primarily by the number of amplifiers and their output power.
Chapter 3 Backup fuse Setting value Installation Fixed value Line cross-section System type Siemens automatic line fuse, e.g. Overload trip Short-circuit trip VDE / UL R&S NV8303 3VL17 02-1DD33... 20 A 300 A 2.5 mm2 / AWG 10 a) R&S NV8304 3VL17 03-1DD33... 25 A 300 A 4.
Chapter 3 AC power supply Main switch Q1 L1 Q1.T1 L2 Q1.T2 L3 Q1.T3 N Q1.N PE Grounding clamp X.PE1 Installation 1. Unscrew the rotary switch and the cover of the main switch. Fig. 11 Unscrew rotary switch and cover 2. Secure the supplied strain relief for the AC supply cable in place as shown. 2098.0188.72 - 3.
Chapter 3 Installation Fig. 12 Strain relief for the AC supply cable 3. Loosen the locking screws on the switch housing so that you can easily insert the cables. 4. Insert the cables into the corresponding openings and fasten them in place with screws. 5. Using a phase-sequence indicator, determine the phase sequence of the rotating field (should be clockwise). If the phase sequence is correct, continue to the next step.
Chapter 3 Installation External fan to X33 (see section "Connection of External Backup Fan") External dummy antenna to X41 (see section "Connecting Dummy Antenna") Suitably adapted dummy plugs are located at the points provided for the purpose. 1. Take the required dummy plug from the power distribution board. 2. Connect the cable of the external device to the plug connector. 3. Put the plug connector back into the power distribution board. Fig. 14 Power distribution board with dummy plugs 2098.
Chapter 3 6 Installation Amplifiers When the transmitter is delivered, one or two exciters and an R&S NetCCU800 are already mounted in the rack. The amplifiers, however, are not and must be retrofitted in the rack. 6.1 Installing Amplifiers WARNING! Always make sure that the power supply is disconnected before commencing any installation work on the transmitter rack. This will prevent injury caused by electric shock and damage to the instruments.
Chapter 3 7 Installation Connecting Antenna/Dummy Antenna to RF Connector The connection flanges for the antenna cables are uniformly 1 5/8“ EIA for TV transmitters in the R&S NV8300 family. These flanges are located on the roof of the transmitter. Depending on the transmitter station (one or more transmitters), either the antenna (RF cable or RF transmission line) or an RF connection is connected directly to a multiple combining filter.
Chapter 3 Installation Fig. 16 RF connection with adapter 7.2 Connecting Dummy Antenna The dummy antenna is only connected when putting the system into operation or for maintenance and repair purposes. With some dummy antennas that have coolant monitoring and overtemperature monitoring, the monitoring equipment can be connected to the transmitter. The main protection loop (X41.1 and X41.2 in the power distribution) can be used here as a temporary measure (e.g.
Chapter 3 Installation Fig. 17 Looping in an antenna patch panel 2098.0188.72 - 3.
Chapter 3 8 Installation Connection Panel The following table lists all the connectors that you may need to assign. 2098.0188.72 Connection Description CANBUS X101A CAN bus data connection for additional racks or output stage A CANBUS X101B CAN bus data connection for additional racks or output stage B RS232 X232 Serial data connection for external BITBUS interface ETHERNET Remote LAN connector or system LAN connector, e.g.
Chapter 3 2098.0188.72 - 3.
Broadcasting Division CHAPTER 4 COMMISSIONING Printed in Germany 2095.7346.32 - 4.
Chapter 4 Commissioning CONTENTS 1 General Information ......................................................................... 1 1.1 Preparations ....................................................................................................1 1.2 Requirements ..................................................................................................2 1.3 Operating R&S NetCCU800 ...........................................................................
Chapter 4 Commissioning 3.1 Final Steps ....................................................................................................26 3.1.1 Checking R&S NETCCU800 Status Display ..............................................26 3.1.2 Checking Exciter Status Display ................................................................27 3.1.3 Checking Output Stage Status Display ......................................................27 3.
Chapter 4 1 Commissioning General Information Transmitters are put into operation by means of the graphical user interface of the R&S NetCCU800. 1.1 Preparations Before you can put a transmitter into operation, it must first have been fully installed. Check the following list to ensure that all connections have been correctly made: Check whether all the modules delivered have been correctly installed and connected as necessary.
Chapter 4 1.2 Commissioning Requirements 1. Before switching on the transmitter, check whether the exciter is set to the correct frequency (consistent with any diplexer or bandpass filter that may be connected). If the transmission frequency is not yet known, the transmitter should remain switched off until the frequency is set. 2. Connect an antenna to the RF output. Switching on transmitter Switch on the transmitter as follows: 1. Switch on the main switch (Q1). 2. Switch on the exciter (F1 or F2).
Chapter 4 2 Commissioning Preparing for Transmitter Startup Local operation of the R&S NetCCU800 includes all the information calls for the system parameters and their settings, complete with intuitive graphical menus. Remote operation via a web browser is possible only if a PC or notebook is connected to the front panel of the R&S NetCCU800. 2.1 Preparing for Local Operation To prepare for local control, proceed as follows: Press the LOCAL key on the R&S NetCCU800. Its yellow LED should light up.
Chapter 4 Commissioning To log on with configuration rights under local control, proceed as follows: 1. From the context menu, select the menu item Change User. The Logon window opens. The current user ID is displayed to the right of Select user from list. 2. Under Select user from list, select the user ID Configuration. After confirming with OK, you are logged on again with configuration rights. Note No password is required to change the user ID under local control (according to the factory default).
Chapter 4 Commissioning 2. Enter the basic settings as shown in the table below. 2.3.
Chapter 4 Commissioning 1. Select NetCCU > Setup > NetCCU Setup > Date/Time. The Date/Time window opens. 2. Enter the basic settings as shown in the table below. Setting item Explanation Date Used to set the current date Local Time Used to set the local time The local time is the time of day or zone time applicable at the station.
Chapter 4 Commissioning Select NetCCU > Setup > NetCCU Setup > Network > Front Ethernet. The Front Ethernet window opens.
Chapter 4 Commissioning 1. Select NetCCU > Setup > NetCCU Setup > Network > Rear Ethernet. The Rear Ethernet window opens. 2.
Chapter 4 Commissioning Notes – Manual settings for remote connection should only be entered in offline mode (context menu: Edit Offline) and then activated with Submit Changes (context menu). – The IP address must not be in the same network as the front ETHERNET interface. – To allow automatic integration in a network (DHCP Client activated), the network must contain a DHCP server. 2.4 Setting Transmitter Type Select NetCCU > Setup > TX Setup. The Tx Setup window opens.
Chapter 4 Commissioning Function Explanation Power Mode Used to set the power class – Low – Medium – High Cooling System Used cooling system The following setting is preset for Power Mode "Low" or "Medium": – Air: Air cooling The following settings can be selected for Power Mode "High": – Liquid: Transmitter is connected to an external cooling system which is used to cool the entire station – Liquid PUC: Transmitter has its own cooling system (R&S ZK810) Tx Type Used to set the standby behavior: –
Chapter 4 2.5 Entering Exciter Settings 2.5.1 Setting TV Standard Commissioning 1. Select Exciter A ATSC > Setup > Exciter Setup > Common. The Exciter Setup > Common window opens. 2. Select the required TV standard. The table below describes the parameters in detail: Setting item Description Digital Standard Selection of the digital TV standard: DVB-T, DVB-H or ATSC To switch over from DVB-T or DVB-H to ATSC you need to reboot a) the exciter.
Chapter 4 Commissioning 2.5.2 Configuring Input Interfaces 2.5.2.1 Specifying Data Format for Data Streams Input 1 and Input 2 1. Select Exciter A ATSC > Input > Input Config. The Input > Input Config window opens. 2. Go to Presel. Mode and select the value Auto for Input1 and Input2. The data format is recognized automatically. The table below describes the parameters in detail: Setting item Explanation Presel.
Chapter 4 2.5.2.2 Commissioning Setting Automatic Input Switchover 1. Select Exciter A ATSC > Input > Input Automatic. The Input > Input Automatic window opens. 2. Activate automatic input switchover if required, and enter the appropriate settings. The table below describes the parameters in detail: Setting item Description Preselect Input Preselection of inputs – INPUT 1: Operating input is TS 1 IN. – INPUT 2: Operating input is TS 2 IN.
Chapter 4 2.5.3 Commissioning Setting item Description On Input Loss For setting the behavior in the event of a defective input signal (synchronization error) – No Mute: The output signal is not suppressed (only effective with MFN) – Mute: The output signal is suppressed if the data rate is incorrect (recommended for SFN) Type of Loss of Input Selection: – Warning: If the input signal fails, only a warning will be generated.
Chapter 4 Commissioning 4. Set Nonlinear Correction to Off. The nonlinear precorrector path is deactivated. Note The two precorrector paths must be switched on again before precorrection is carried out. 2.5.4 Setting Transmitter Frequency 1. Select Exciter A ATSC > RF > Synthesizer. The RF > Synthesizer window opens. 2. Make the required settings for transmitter frequency and reference source. The table below describes the adjustable parameters in detail: 2098.0188.
Chapter 4 Commissioning Setting item Explanation Reference Selecting the reference source for stabilization of the frequency processing (reference frequency source).
Chapter 4 2.5.6 Commissioning Setting RF Output 1. Select Exciter A ATSC > RF > Output. The RF > Output window opens. 2. For normal transmission operation, enter the following settings: Setting item Setting Regulation ON Output Attenuation 0 dB RF Slope 0% Modulation Slope 0% The table below describes the adjustable parameters in detail: Setting item Description RF Output Enables (On) or disables (Off) the RF output.
Chapter 4 2.5.7 Commissioning Setting item Description RF Slope Correction of a slope of the amplitude frequency response in the spectrum for equalizing subsequent components (output stage, filter). Modulation Slope Correction of a curvature of the amplitude frequency response in the spectrum for equalizing subsequent components (output stage, filter). Display Description AGC Regulation Displays the level of the output level control Specifying Behavior on Failure of a Reference Source 1.
Chapter 4 Commissioning Setting item Explanation OCXO Adjust Setting for adjusting an internal OCXO frequency (for operating mode "Internal") The same setting options are available in menu window RF > Synthesizer. Mute on PPS Fail For setting the behavior in SFN mode in the event of failure of the external time reference. The following settings are possible: – off: The output signal is not suppressed.
Chapter 4 Commissioning The table below explains the user-selectable parameters in detail: Setting Explanation Racks per OS Number of racks belonging to the output stage Outlet Temp. Fault Switch-off threshold with overtemperature If this threshold is exceeded, the rack controller shuts down the transmitter rack. Value: 45 °C to 65 °C Nominal value: 65 °C Outlet Temp. Warning Warning threshold for overtemperature A warning is generated if this threshold value is exceeded.
Chapter 4 Commissioning The table below shows all the user-selectable parameters: Setting Explanation Number of Amplifiers Used to enter the number of amplifiers installed in the rack Value: 1 to 4 RF event signaling – yes: If the minimum or maximum limits for forward and reflected power (RF Fail Limit, RF Warning Limit) are violated at the test points of the rack, warnings or fault messages are output (default setting).
Chapter 4 Commissioning 3. Keep changing the value at Reference Voltage Vision until the desired transmitter power is measured on the power meter (the table "Transmitter power and coupling attenuation at P14C" specifies the benchmark figures). 4. Remove the power meter from the test point P14C.
Chapter 4 Commissioning 2. Under Nominal Value, enter the required transmitter power that you set in the previous section. 3. Use Set Gain to measure and save the DC voltage of the forward-power test point at nominal output power. Note To abort, exit the Trigger: Set info window by pressing Back. To continue, confirm by pressing OK. 4. Switch off the transmitter. 5. Use Set Offset to measure and save the DC voltage of the forward-power test point at 0 W output power.
Chapter 4 Commissioning Function Explanation Timeout RF Fail Control Used to select the time that the lower threshold for the forward power (specified as the RF Fail Limit) must be violated for before a fault message is output. For example, if a value of 3 dB has been entered as the RF Fail Limit and the actual value drops below that level for 8 seconds (typical setting for Timeout for RF Fail Control), a fault message will be output. Calibration Execution of calibration and display of the results.
Chapter 4 Commissioning 4. Use the Set Offset command to measure and save the DC voltage of the reflected-power test point at 0 W output power. Note To abort, exit the Trigger: Set info window by pressing Back. To continue, confirm by pressing OK. 5.
Chapter 4 3 Commissioning Completion of Startup Procedure When the steps described in the above sections have been carried out, the transmitter is ready for operation. Each transmitter receives a test report from the final testing department complete with measurement data on every quality parameter. This means that on site compliance testing is only necessary at the customer's request. 3.1 Final Steps 3.1.1 Checking R&S NETCCU800 Status Display 1. Select NetCCU > Status > Device Status.
Chapter 4 Commissioning 5. Select NetCCU > Status > Tx Status. The Tx Status window opens. 6. Check the status of the warning and fault indicators. If a transmitter is ready to operate, no warnings or faults will be signaled. 3.1.2 Checking Exciter Status Display 1. Select Exciter A/B ATSC > Status. The Status window opens. 2. Check the status of the warning and error indicators. If a transmitter is ready to operate, no warnings or errors will be signaled. 3.1.
Chapter 4 Commissioning 2. Check the status of the warning and fault indicators. If a transmitter is ready to operate, no warnings or faults will be signaled. 3. Select Outputstage > Status > Rack Status > Rack x > Rack Controller. The Rack Status > Rack x > Rack Controller window opens. 4. Select Outputstage > Status > Rack Status > Rack x > Amplifier. The Rack Status > Rack x > Amplifier window opens. 2098.0188.72 - 4.
Chapter 4 Commissioning 5. Check the status of the warning and fault indicators. If a transmitter is ready to operate, no warnings or faults will be signaled. 3.2 Adjusting Amplifier Order Numbers to Installation Positions in Rack After the transmitter system has been put into operation, entries for the amplifiers (of a particular rack) are displayed in the menu path for the output stage with consecutive numbering (Amplifier 1 to max. Amplifier 10).
Chapter 4 Commissioning 2. In the Identify column, activate the function Start (starting with Device No. 1). The LEDs on the associated amplifier flash. This identifies the amplifier with the (temporary) order number 1. 3. Under Device, change the order number according to the position of the identified amplifier in the rack. 4. Repeat steps 2 to 3 for the other amplifiers in the rack.
Chapter 4 4 Commissioning Precorrection This section describes the non-linear precorrection sequence in manual mode. 4.1 Functions of Nonlinear Precorrector 4.1.1 General In the basic version, the graphical user interface of the non-linear precorrector for DTV and video signals consists of the Nonlinear control panel and the FreqCorrection control panel.
Chapter 4 4.1.3 Commissioning Nonlinear Frequency Responses As an additional function, the non-linear components of the DTV/video precorrection (amplitude or phase precorrection) can be assigned a frequency response in the FreqCorrection control panel, and the effect of the frequency response depends on the modulation. If the amplitude precorrection or phase precorrection is affected by an amplitude frequency response, only the "individual" precorrection is affected.
Chapter 4 4.3.1 Commissioning General Requirements The following requirements should be fulfilled prior to precorrection: The transmitter must be operated at its nominal power output and the system level must be adjusted at all points. Precorrection must be on, for which the Nonlinear control panel must be selected in the precorrector graphical interface.
Chapter 4 Commissioning Fig. 1 Determining system levels 4.3.3 Precorrection Procedure 4.3.3.1 Starting Precorrection Requirements The following requirements should be fulfilled prior to precorrection: The transmitter must be operated at its nominal power output and the system level must be adjusted at all points. A spectrum analyzer must be connected to the transmitter output.
Chapter 4 Commissioning 1 3 3 2 Fig. 2 Example: DVB signal spectrum 1) Shoulder distance 2) Useful signal 3) Shoulder Start 1. Start precorrection with the phase precorrection. 2. Since phase precorrection and amplitude precorrection affect one another, repeat both precorrection procedures if necessary until the optimum result is obtained. 4.3.3.2 Phase Precorrection Proceed as follows for phase precorrection: 1. Add in a phase reference point at about 10%.
Chapter 4 Commissioning Fig. 3 Typical curve for starting precorrection with amplitude precorrection switched off 4.3.3.3 Amplitude Precorrection The procedure for amplitude precorrection is the same as that for phase precorrection. If the first interpolation point brings about an improvement, deal similarly with the other interpolation points. 1. Set the interpolation points more or less at the positions of the phase values. 2. Set all magnitudes to zero. 3.
Chapter 4 Commissioning Fig. 4 Typical curve with both phase and amplitude precorrection switched on 4. Optimize the shoulder distance using all interpolation points again, in particular by shifting the interpolation point at 100%. Keep carrying out phase precorrection and amplitude precorrection alternately until no further improvement can be obtained. Note Further interpolation points can be added for an optimum precorrection.
Chapter 4 Commissioning Optimizing the shoulder distance 1. First use the the Curve Data Amplitude Read and Curve Data Phase Read buttons in the Nonlinear control panel to read off the characteristics currently set in the precorrector. The characteristics are displayed in the display part of the graphic. 2. Go to the FreqCorrection control panel. The characteristics can be seen in the graphic. 3.
Chapter 4 Commissioning 1. Set another onset point in the upper level range >25%. 2. Optimize the shoulder distance by alternately setting the amplitude and phase regulators with the aid of the slopes of point 2. The slopes will then point in the opposite direction than at Point 1. Fig. 6 The FreqCorrection user interface with a second onset point 4.3.3.
Chapter 4 2098.0188.72 - 4.
