Operation Manual 700W UHF 8VSB-ATSC Transmitter EC701HP Rodovia BR 459 - KM 121, 121A - Córrego Raso - 37540-000 - Santa Rita do Sapucaí - MG - Brasil Tel: (+5535) 3473-3473 - Fax: (+5535) 3473-3474 | linear@linear.com.br - www.hitachi-linear.com.
WARNING All rights reserved. No part of this manual may be reproduced or transmitted in any form, by any means (electronic, photocopying, recording or otherwise) without the prior permission of the publisher, except where permitted by law.
Hitachi Kokusai Linear Equipamentos Eletrônicos S/A TECHNICAL ASSISTANCE In our Quality Management System, since several devices are received without proper identification and explanations; we are now working with previous approval for maintenance devolution. Therefore, in case of maintenance please contact: Hitachi Kokusai Linear Equipamentos Eletrônicos S/A Phone: (+35) 3473-3473 / Fax: (+35) 3473-3474 E-mail: manutencao@linear.com.
Hitachi Kokusai Linear Equipamentos Eletrônicos S/A WARNING MANDATORY CONDITIONS FOR TRANSMITTER INSTALATION, FOR VALIDATING THE WARRANTY TERMS 1. Proper grounding; 2. Proper lightning-rod; 3. Shelter with ventilation, foot-print, and temperature in compliance with the transmitter’s standards. 4. Voltage regulator in compliance with transmitter’s consumption. Noncompliance with any of above-mentioned terms will automatically result in the suspension of the warranty terms.
Hitachi Kokusai Linear Equipamentos Eletrônicos S/A ANNEX I INSULATION PROTECTORS LIGHTNING ROD TEMPERATURE HUMIDITY CLIMATE CONTROL ADPS WIRE GAUGE AC MAINS STABILITY GROUNDING TOPIC MINIMUM INFRASTRUCTURE REQUIREMENTS The grounding system, to which Hitachi Kokusai Linear’ TV transmitter will be attached, must be designed and implemented by trained professionals. An improper grounding system may put at risk, not just the equipment but the life of the professionals working in the shelter.
Indice Section 1 - Introduction Section 3 - Installation 1.1 Purpose of this Manual ................................................ 1-1 3.1 Introduction ........................................................... 3-1 1.2 Basic Knowledge Required ........................................ 1-1 3.2 Inspection ............................................................. 3-1 1.3 Structure .......................................................................... 1-1 3.
Section 5 - System Operation Manual 5.1 5.2 5.8 Introduction ................................................................ 5-1 5.1.1 Front Panel .................................................... 5-1 5.8.1 IP Configuration ........................................... 5-47 Digital Exciter - The Master Control Unit .............. 5-1 5.8.2 Mask Configuration ..................................... 5-48 5.2.1 Keypad ........................................................... 5-2 5.8.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Section 1 Introduction 1.1 1 Purpose of this Manual The purpose of this manual is to provide the technical information required for the installation and operation of transmitters in UHF TV signals (digital ATSC) in the E-Compact series. Hitachi Kokusai Linear Electronic Equipment S/A recommends that you carefully read the sections of this manual before installing or operating this equipment. 1.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Section 4 - Initial Activation This section describes which steps to be performed in the initial activation of the equipment. Section 5 – Operation of the Control System Information of navigation and Operation using the front keypad as well as identifications and functions of all controls and indicators of the outer panel.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power HP transmitters Family (High Power) has high efficiency and high power density. The high´s power line consists of refrigerated air transmitters with output powers of 700W up to 8.5kW (after filter) to ATSC standard. The intelligent digital management system using microcontrollers, allows control and monitoring in real time of all transmitter functions.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Below the table of power drawers of addresses and exciters on MODBUS.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power The Architecture of Control for Hitachi Kokusai Linear Transmitters is composed of subcontrol blocks characterized by Control / Exciter Drawers and by Power Drawer. This architecture allows the distribution of control functions. The main control block represents the Control / Exciter Drawer and the sub-control blocks represent the Power Drawers and Telesupervision Drawer (Remote Control Drawer).
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.4.2 E-Compact ATSC Transmitters Models The E-Compact TV series consists of transmitters that have a rated power of 700Wrms to 8,500Wrms (digital). Following in Table 1-2, the available model are listed.
USB Ethernet* 10MHz IN 10MHz OUT 1PPS OUT ASI OUT 2 1PPS IN ASI IN 2 ASI IN 1 ASI OUT 1 N TUNER IN AC OUTLET RF EXCITER MOD GV 4992 RF Before Filter Manual Rev. 0.1 - February 2018 RF After Filter RF IN GPS ANTENA Fans sma PA ON/OFF Breaker Manual Status Slow Fuse GV 40087 Before Filter RF Sample 220 Vac 220V RF OUT RF Connector DIN Tomada AC RF Conector DIN RF OUT 750W Block Diagram of the Transmitter model EC701HP Figure 1-2 EC701HP – RF SYSTEM BLOCK DIAGRAM Meas.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.4.5 Functional Description of the System 1.4.5.1 ATSC Digital Exciter The exciter is formed by the MOD GV 40153 module drawer more optional (internal GPS, and other software optional).
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Both (I) and (Q) modulated carriers are routed into the IF/UHF up-converter. The local oscillator is a synthesized time-based PLL via an internal VOCXO (Voltage / Temperature Oven Controlled Crystal Oscillator). This oscillator can receive external reference one among 6 possibilities; (External 1PPS GPS, Internal 1PPS GPS, External 10MHz or Input Transport Stream).
Manual Rev. 0.1 - February 2018 ASI 1 Equalizer ASI 1 PPS Schmitt Trigger 10 MHz Zero Cross PPS in 10MHz in Transmitter Control. Green Connector UBLOX GPS GPS ant.
Manual Rev. 0.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Description of main circuits: Equalizer input circuit ASI 1 e 2 Equalize and convert DVB-ASI signal into a differential LVDS signal to the FPGA. Circuit Cable Driver of the outputs ASI 1 e 2 Converts the LVDS signal provided by the FPGA to DVB-ASI electrical standard. The two ASI outputs have the same content.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Digital-to-Analog Converter and Analog FI generation Composed of the DA converter, reconstruction filter (low pass with fc ~ 50MHz) and FI amplifier. The DA converter operates at 172.0195804 MSPS (interpolation factor equal to 2) and the output amplifier with gain of 7dB has a protection circuit that inhibits its operation during the transient power supply and system startup.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power The FI signal is then filtered and amplified, this feeds the output stage of AD conversion (Analog to Digital) and the AGC level detector (Automatic Gain Control), which operates in the Truss (Variable Voltage Controlled Attenuator) of the RF inputs (average power between 0 and +10dBm) in order to maintain the output of FI with an average power of -5dBm + / - 1dB.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Power Amplifiers which cover the entire UHF band Power transistors LDMOS NXP BLF888A Automatic control of the quiescent currents of the power transistors depending on the temperature. Automatic control of rotation of the fan depending on the temperature of the power transistors. Protection against VSWR and Overdrive Power Factor Corrector (PFC) at power supply (PFC).
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power Figure 1-9 - Front view of the power drawer Table 1-3 Power Drawer Technical Specification CHARACTERISTIC Input Impedance Loss of input return RF Input connector RF Input level Operation Frequency Range Output Power Power Gain Gain adjustment range Phase adjustment range Automatic Fan Speed (rpm) Control RF Output connector Intermodulation (shoulder) Harmonic Attenuation AC Power Supply Efficiency Power Fac
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.4.5.5 Power Combiner This module is a passive RF combiner N doors constructed with hybrid couplers, which is a combination of N: 1(*5) from the output of the N power drawers, thus obtaining the final transmitter power. This combiner has loads of unbalance, located in the loads drawer. Figure 1-10 - Combiner (UHF Hybrid Coupler - MC3Q40C model used in the EC703HP transmitter) 1.4.5.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.4.5.7 Filtering System The TV transmitter is endowed with a filtration system that ensures that the spectral conformity of the TV channel broadcast on UHF stay in accordance with the parameters set by international standards (FCC, ITU and Anatel).
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.4.5.10 Electrical Distribution Drawer (MCCB) This drawer is responsible for the distribution and protection of AC power equipment, and has the following characteristics: - Inrush current limitation of equipment (inrush). - Equipment protection in the event of over-voltage or phase failure in the AC network. - Provides + 50V for the load bank drawer. - Provides + 8V for the reflectometer.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.5 Technical Specification - E-Compact TV ATSC Transmitters GENERAL FEATURES • IP Input; • Modular power amplifiers; • High efficiency with Doherty Technology; • Air Cooling; • Automatic Fan Speed Control: low noise levels, energy saving and increased lifespan; • Power Supply with Power Factor Correction ≥ 0.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power 1.6 Photo - EC701HP Transmitter Figure 1-13 - Front view of the EC701HP Manual Rev. 0.
Section 1 - Introduction (UHF Digital TV Transmitters) E-Compact - Air Cooling - ATSC - High Power E-Compact Series - Installation CheckList (Use before turning the transmitter on for the first time) Task Grounding Low power cables Description Electrical. External Grounding from the AC panel. Cabinet. Physical grounding to the Station grounding.
Section 2 - Minimum Installation Requirements (E-Compact ATSC Transmitters) Section 2 Minimum Installation Requirements 2.1 2 Introduction This section describes the minimum requirements for the E-Compact ATSC transmitters installation, including recommendations about shelter, tower, antennas, cables, grounding, electric network, transient prevention, etc. 2.2 Minimum Requirements 2.2.1 Electric Power 2.2.1.
Section 2 - Minimum Installation Requirements (E-Compact ATSC Transmitters) 2.2.1.3 Insulation It is important to provide suitable electric insulation between the shelter’s power points and the Hitachi Kokusai Linear TV transmitter, which can be achieved by means of insulating transformers. This will hinder the passage of any kind of transient from the electric network to the TV transmitter and vice versa.
Section 2 - Minimum Installation Requirements (E-Compact ATSC Transmitters) Important to note that UPS does not necessarily need to have a battery bank, thus minimizing the cost of the final product. This solution is much better than a conventional stabilizer due to double conversion as explained earlier. - The power factor correction (PFC) in the UPS is necessary to reduce the cost of electricity, it reduces the reactive power (VAr), dimunindo the total power (VA).
Section 2 - Minimum Installation Requirements (E-Compact ATSC Transmitters) STATIC BYPASS KEY DELTA TRANSFORMER CA CA CC CC MAIN INVERTER DELTA CONVERTER BATTERY Figure 2-3 - No-Break on-line Delta Conversion 2.3 Atmospheric Discharge Protection System 2.3.1 Lightning Arresters The Atmospheric Discharge Protection System comprises the lightning arresters and their elements.
Section 2 - Minimum Installation Requirements (E-Compact ATSC Transmitters) 2.4 Air Conditioning 2.4.1 Temperature For optimum equipment performance and longer life the shelter temperature must be rigorously controlled by means of air conditioning.
E-COMPACT UHF Transmitter HITACHI E-COMPACT SERIES™ INSTALLATION GUIDE Version 1.0 INSTALLATION CONSIDERATIONS: Thank you for selecting Hitachi LINEAR for your TV Broadcast needs. The transmitter you are about to install was tested and approved by Hitachi LINEAR quality control. It is factory set on the requested channel and output power, and in accordance with ANATEL regulations. No setting changes are required for the transmitter to go on the air.
WARNING! THE VOLTAGES AND CURRENTS IN THIS EQUIPMENT ARE DANGEROUS. PERSONNEL MUST, AT ALL TIMES, OBSERVE SAFETY WARNINGS, INSTRUCTIONS, AND ANY LOCAL REGULATIONS. THIS OWNER’S MANUAL IS INTENDED AS A GENERAL GUIDE FOR TRAINED AND QUALIFIED PERSONNEL WHO ARE AWARE OF THE DANGERS THAT ARE INHERENT IN THE HANDLING AND OPERATION OF POTENTIALLY HAZARDOUS ELECTRICAL AND ELECTRONIC CIRCUITS.
Returns and Exchanges Equipment (Damaged or undamaged) should not be returned unless written approval and a Merchandise Return Authorization (MRA Number) is received from your Linear Sales representative or Linear Customer Service. Special shipping instruction will be provided which will assure proper handling. The circumstances and reasons for the return must be included in the request for return. Equipment that is special or “custom” ordered may not be returnable.
Section 3 - Installation (ATSC EC701HP Transmitter) Section 3 Installation 3.1 3 Introduction This section provides general information for planning the installation of the EC701HP transmitter, such as recommendations regarding Shelter, Tower, Antennas, Cables, Grounding, Power Line, Prevention against Transients, etc. 3.2 Inspection The package and the equipment must be inspected upon delivery in order to detect eventual visible damages.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.3.2 Tower For the installation of the TV transmission and reception system, the tower must be made with hot-dip galvanized steel. A lightning protection system should be installed in the tower as well as nocturnal beacons bulbs with red glass. The following information about the tower must be obtained: (a) It must be provided of special insulator supports for descent of cordage of lightning rod, with a space of 1,5m maximum between them.
Section 3 - Installation (ATSC EC701HP Transmitter) Distance between the Rx and Tx Antennas They should be placed as far as possible from each other in order to isolate the transmitted signal from the received signal. Polarization It is very important to verify the polarization of the received signal, which can be vertical, horizontal or circular.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.3.4 Equipment Installation Indoors Small equipments must be placed on a table in a way to provide easy access from all sides and be at least one meter far from the walls. Do not place anything on the top of the equipment in order not to compromise its natural ventilation. The ventilation system equipments must be placed directly on the shelter's floor as long as it is flat and they must be placed at least one meter far from the walls.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.3.6 Electric Installation Grounding The shelter installations receive power through an aerial power line. Moreover, because of it, the lightning discharges that might hit the power lines generate power surges that can reach the shelter and consequently the equipments. To protect the equipments against eventual power surges, we recommend the use of gas filled surge protectors, after an isolation transformer with electrostatic shield.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.4 Mechanical Drawings This section shows the mechanical drawings relative to the external structure of the equipment, including location of drawers. 3.4.1 Front View RF SAMPLING PROBE MOD 40052 SOND 158-158 LOW PASS FILTER MOD 40055 CABLES ORGANIZER EXCITER - MOD GV 4992 POWER DRAWER MOD GV 40087 Figure 3-1 Front View EC701HP with double exciter Note: * Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.4.2 Rear View Figure 3-2 Rear wiew - Model EC701HP (rack of 8 units) Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.4.3 Isometric View Figure 3-3 Isometric View - Model EC701HP Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.4.4 Dimensions (mm) Figure 3-4 - Front view Figure 3-5: Side view Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.4.5 Top view LOW PASS FILTER MOD 40055 Figure 3-6 Top view of EC701HP Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.5 Front Panel The transmitter's front panel provides access to the following drawers: Digital Exciter and Power Drawer. 3.5.1 8 Digital Exciter 7 The Digital Exciter's front panel contains the display, the initialization LEDs and the keyboard. IDENTIFICATION 1- Air vents. 2- Display - 2-line 40-column digital display through which it is possible to view the navigation menu of the Transmitter's management software.
Section 3 - Installation (ATSC EC701HP Transmitter) Rear Panel The following elements are located in the digital exciter's rear panel: 1- On/Off switch 2- 3-pin AC feeding connector. 15 3/ 11- Air output. 14 16 BEFORE F. GPS ANT. A1 CAM AFTER F. TUNER IN 9 20 8 1PPS IN 21 7 ASI OUT 2 ASI OUT 1 22 6 ASI / 310M IN 2 ASI / 310M IN 1 10- BEFORE F. 19 10 1PPS OUT 9- GPS ANT.
Section 3 - Installation (ATSC EC701HP Transmitter) 16- RF OUTPUT Function: RF signal output Type: N female Impedance: 50 17- CAM Function: Conditional Access Module compatible with IRDETO cards and CONAX. Supports multiple services. Type: PCMCIA 18- AFTER F. Function: Input of a FEEDBACK sample taken after output filter (used for linear pre-correction). Type: SMA female Impedance: 50 Level: 0 ~ +10dBm 19- TUNER IN Function: ISDB-Tb (UHF) Signal receiver or DVB-S/S2 (L Band).
Section 3 - Installation (ATSC EC701HP Transmitter) 3.5.2 Power Drawer INDICATOR LEDS USB INTERFACE ON/OFF SWITCH Figure 3-9 Front View of Power Drawer - Module MOD GV 40001 / 40087 Changing Functions of the LED’s of the GV 40001 front panel 1) Status dos LEDs Green light indicates OK Orange light indicates that ocurred a failure Flashing Red light indicates that is ocurring a failure LED’s Functions - MOD GV 40001 HP.PA LED ALARM PWR This LED lights only GREEN indicating that is POWERED ON.
Section 3 - Installation (ATSC EC701HP Transmitter) PLUG-IN CONNECTOR RF INPUT POWER SUPPLY FUSE AC INPUT RF OUTPUT CONTROL INTERFACE Figure 3-10 Rear view of the Power Drawer - Model MOD GV 40001 Identification: The following elements are located in the power drawer's rear panel: RF OUT - Unflanged 7/8" RF output connector (female) for the power module. RF IN - SMA connector (female) for the RF input from the excitation drawer.
Section 3 - Installation (ATSC EC701HP Transmitter) FUSÍVEL FONTE POWERDA SUPLLY DE ALIMENTAÇÃO FUSE RF SAMPLE ENTRADA RF INPUTRF ENTRADA AC AC INPUT RF OUTPUT INTERFACE DE CONTROLE CONTROL INTERFACE Figure 3-12 Power drawer's rear panel - MOD GV 40087 model (Used only on the EC701HP transmitter) Identification: RF OUT - DIN 7-16 RF output connector (female) for the power module. RF IN - SMA connector (female) for the RF input from the excitation drawer.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.5.3 Top Panel 4,5- TURN IN A / TURN IN B (optional) Function: RF Signal Input (VHF / UHF) 1 2 3 Type: F Female 6,8- GPS ANTENNA IN A / GPS ANTENNA IN B (opt.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.6 Power Network Connections 3.6.1 Power Feeding Options • Single phase 208V = 1(one) 208V phase + Neutral • Two-phase 208V = 1(one) 120V phase + 1(one) 120V phase • Three-phase 208V = Y: 3 (three) 120V phases + Neutral : 3 (three) 120V phases • Three-phase 360V = Y: 3 (three) 208V phases + Neutral A grounding cable is required for all the above options.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.7 ON SITE PHYSICAL ASSEMBLY NOTE: trained personnel ONLY should conduct the on-site physical assembly. ATTENTION The following precautions should be taken when positioning the transmitter at the installation site: 1) The air intake (front) and air outlet (back) should be completely clear. 2) The transmitter rack must be positioned in such a way so as to ensure easy access from any side.
Section 3 - Installation (ATSC EC701HP Transmitter) 3- Insert and fasten the power drawer in the rack. 4- Insert and fasten the digital exciter B. 5- Insert and fasten the digital exciter A. 6- Insert and fasten the Ethernet* switch 7- Check the presence and physical integrity of all the drawers' power feeding and communication points.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.7.2 Connections 3.7.2.1 Internal Connections The following connections must be made: - RF cables - AC power cables and grounding of the exciter - AC power cables and grounding of the power drawer - Measuring cable and communication cable - Transport Stream cables (ASI) - Switch Ethernet* NOTE: Before making connections, remove all "Yellow cable ties" fixed cables.
Connect the AC feeding pigtail to the identified 3-pin connector located in the left side of the exciter draw er’s rear panel. EX CITER Figure 3-18 AC Input cable, ON/OFF switch and fusible - Module 4992 Connect the grounding mesh in the GND screw on the rear panel of exciter. Section 3 - Installation (ATSC EC701HP Transmitter) EX CITER SCREW GROUNDING Figure 3-19 Screw grounding - Digital Exciter GND: Ground - Connect this terminal to ground at the installation site.
Section 3 - Installation (ATSC EC701HP Transmitter) C- Power Drawer AC Power Cable Locate the power cable attached to the side of the rack. Connect the power cable to the power drawer.
Section 3 - Installation (ATSC EC701HP Transmitter) E- Transport Stream ASI Cables Connect the cables from the top panel of the transmitter to the respective connectors on the rear panel of the exciter (MOD GV 4992). Figure 3-22 ASI cables input - MOD GV 4992 Connect the other points of the exciter according to the tables below: Figure 3-23 Top panel connections Manual Rev. 0.
Section 3 - Installation (ATSC EC701HP Transmitter) ORIGIN – T RANSMITTER TOP COVER Connector Description FROM CABLE TYPE CABLE Connector Description 1 RF AFTER FILTER IN A Exciter AFTER F. N(F) –SMA(M) RG316 50 Ohms 2 TURN IN A Exciter TURN IN F(F) –SMA(M) RG316 50 Ohms 3 GPS ANTENNA IN A Exciter GPS ANT.
Section 3 - Installation (ATSC EC701HP Transmitter) 3.7.2.2 External Connections The following external connections must be made: - AC power feeding - Grounding - Rigid line / Filter / Antenna - Transport Stream IN A- AC Power Feeding Pass the AC power feeding cables through the hole at the rack bottom and connect them to the AC input connector.
Section 3 - Installation (ATSC EC701HP Transmitter) B- Grounding Insert the ground cable through the hole and connect it to the screw at the bottom of the rack. GROUNDING SCREW GROUNDING SCREW Figure 3-26 Grounding screws - Bottom of the rack ATTENTION Before energizing the transmitter, ensure that the localized circuit breaker on the right rear side of the transmitter rack is off.
Section 3 - Installation (ATSC EC701HP Transmitter) D- Programming a. The transmitter is ready to receive ASI transport streams as programming source. b. Programming BNC connector is located on the top panel of the transmitter. c. Connect the applicable signal cables on the top cover of the rack. RF AFTER FILTER IN A GPS ANTENNA IN A ASI 1 INPUT ASI 2 INPUT ASI 1 OUTPUT External 10MHz reference Figure 3-27 Connections Panel - Transmitter Manual Rev. 0.
Section 4 - Initial Activation (ATSC Transmitters) 4 Section 4 Initial Activation 4.1 Introduction After finishing the installation, the equipment is ready to be activated. It is important to observe that the transmitter is configured at the factory with the parameters that were supplied by the customer at the time he made the purchase, such as the channel output, power, MER, etc. One should check the functionality and performance of the RF power, DC currents, temperature, alarms and communication.
Section 4 - Initial Activation (ATSC Transmitters) Setting the output power to 0 watts For security purposes, access the power programming screen (POWER SETUP [1100]) of the exciter by Menu navigation software, no display digital and set the transmitter’s power to zero watts. Below the sequence to access: Select Setup Menu, press ENTER. > Select Power Setup, press ENTER. Screen [1000]. Set the power to 0 W, press ENTER. Screen [1100].
Section 4 - Initial Activation (ATSC Transmitters) NOTE: Only the SYNC LOSS TS 1 and SYNC LOSS TS 2 Fail alarms are acceptable. If the input signal (TS) is present, just the led PAST ALARM shall remain lit. Resetting the status of older alarms (PAST ALARM) >> Select System Alarms/Log in the Main Menu [0000] and press ENTER. >> Select Clear Alarm Log [3000]. Press ENTER. Deleted alarms, LED PAST ALARM deleted.
Section 4 - Initial Activation (ATSC Transmitters) Verification of current (Standby) on the main RF transistors of power drawers > Select Drawers in the screen Measurements [2000]. Press ENTER. >> Select Current in the screen Drawer Measurements [2300]. Press ENTER. > > > Readings sequence of power drawer’s currents, screen [2320]. Are shown the readings related to the quiescent current of the transistors which can be displayed in three sequences of the [2320]screen to the power drawer 01.
Section 4 - Initial Activation (ATSC Transmitters) Verification of the temperatures of the modules in each power drawer >> In the screen Drawer Measurements [2300], select Temperature. Press ENTER. > Use the “” button to display the remaining items on this menu. > > To select the drawer use the button or . To change the temperature from º C to º F, press and hold and .
Section 4 - Initial Activation (ATSC Transmitters) Program the value of 10% of rated output. Use the right button on your keyboard to increase the RF power. Confirm the selected value by pressing the ENTER key (center key on the keyboard). * Indicates that the configuration has not been confirmed. Measuring the power > Select Power in the screen Measurements [2000]. Press ENTER. > Use “” button to display the remaining items on this menu. > > Screen [2100].
Section 4 - Initial Activation (ATSC Transmitters) NOTE: If an alarm occurs during the power increase, it is advisable to reset the output power of the transmitter to seek the solution. If necessary contact the Service Department of Hitachi Kokusai Linear Electronic Equipments S / A. Check if there is any abnormal or differential heating, in the connection joints between the transmitter, filter, antenna and adder’s imbalance load.
Section 4 - Initial Activation (ATSC Transmitters) > Set the Mute on TS Loss: Off Verification of measures relating to the Input Flow (BTS - Broadcast Transport Stream) To access the screen of BTS flow measure, one should follow the following sequence of screens, starting from the Measurements menu: > In the screen Measurements [2000], select Transport Stream. Press ENTER. > Use the “” key to display the remaining items on this menu. > > > > Manual Rev. 0.
Section 4 - Initial Activation (ATSC Transmitters) 4.2 Connections and Final Checks Connect Transport Stream (TS) cable at the transmitter’s upper panel. At this time the LED SYNC. LOSS and the LED of the CURRENT ALARM will extinguish and the LED PAST ALARM will light. Access the menu of the digital exciter and erase the alarm log. After this, only the LED will remain lit named POWER ON. Main Menu – System Alarms / Log – Clear Alarm Log. 4.
Section 4 - Initial Activation (ATSC Transmitters) 4.3.2 Serial terminal Emulators The Power Drawer can be configured using the serial terminal emulators. 4.3.3 Forbidden operations There are transmitter parameters which are configured at the factory, parameters defined on the purchase of the transmitter, which are not available to change. - Canal - Equipment model There are other parameters that are configured in the factory, but allow changes in their values by using a password.
Section 4 - Initial Activation (ATSC Transmitters) C – Variations in the network Each piece of equipment has its own independent power supply, all of which have equal protection features. - Protection against short circuit - Surge Protection Basically, the surge protection on the network is performed by inserting the varistors between phases and between phase and earth, thus absorbing peak voltage, not allowing them to damage the power source.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5 Section 5 System Operation Manual E-Compact ATSC Transmiitters 5.1 Introduction The E-Compact ATSC transmitters provision: (a) Measurements, (b) Configurations, (c) Alarms, and (d) Remote control via microcontrollers. Below is a detailed description about the operational software (configuration and operation) system installed in the ATSC transmitters, located within of the exciter. 5.1.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.2.1 Keypad When navigating through the different functions (status and setup), take into consideration the keyboard symbols and the descriptions below: (1) Moves the arrow UP to the next function shown on LCD screen (2) Moves the arrow to the next RIGHT position (3) Moves the arrow DOWN to the next function shown on LCD screen. (4) Moves the arrow to the next LEFT position.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.3 Flowchart Screens 5.3.1 Presentation and Main Options HITACHI KOKUSAI LINEAR EC704HP – 8VSB ATSC Digital Exciter Channel: 14 TV Transmitter Output: 10/03/16 2900 [W] 15:24:37 [Any key] Main Menu: Setup Menu 1/5[0000] [Up and Down Keys] [idle for 5 minutes] Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.3.
Manual Rev. 0.1 - February 2018 [Esc Key] Main Menu: Setup Menu 02/17 [1000] [Esc Key] [Up and Down Keys] 05/17 [1000] Setup Menu: Pre-Correction 1 04/17 [1000] Output: 1/3[1200] On 1/1[1100] [W] 2/3[1200] WARNING!! Changing these parameters may damage the equipment. Continue?Yes WARNING!! Changing these parameters may damage the equipment. Continue?Yes [Left or Right Keys] WARNING!! Changing these parameters may damage the equipment.
Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 2 [Enter Key] Setup Menu: Alarms Mask Alarms Mask: Reflected Power: 0000[W] 10/17 [1000] [Up and Down Keys] 1/2 [1A00] [Up and Down Keys] [Esc Key] Alarms Mask: Activate TS IN: TS1/TS2 2/2 [1A00] [Enter Key] Setup Menu: USB Setup 11/17 [1000] Setup Menu: USB Host Access Setup 12/17 [1000] USB Host Access: 1/1 [1C00] Activate Host Frontal Port at USB Setup Setup Menu: Crest Factor Reduction 13/17 [1000]
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.3.3 Measurements [Enter Key] [Enter Key] Main Menu: Measurements Measurements: Power 2/5[0000] 1/9 [2000] [Esc Key] [Up and Down Keys] Transmitter Power Meas.: Programmed: 0 [W] [Esc Key] 1/3[2100] [Up and Down Keys] Transmitter Power Meas.: 2/3[2100] Forward: 0 [W] Reflected: 0 [W] Transmitter Power Meas.: 3/3[2100] ALC Reference Voltage: 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 2 [Enter Key] Measurements: -> Automatic Level Control 7/9 [2000] [Up and Down Keys] Automatic Level Control: 1/1 [2700] -> ALC Vout: 0.00[v] Sensor Vin: 0.
Manual Rev. 0.
Manual Rev. 0.1 - February 2018 [Esc Key] Main Menu: Remote Access [Esc Key] Remote Access: Host Address 2/3 [4200] 3/3 [4200] Host Address: Host Port: 04992 [Esc Key] 1/3 [4200] Subnetwork Mask: 255.255.255.000 IP Address: 192.168.100.115 1/1 [4220] 1/1 [4210] 1/1 [4130] Gateway: 192.168.100.001 1/1 [4120] 1/1 [4110] Subnetwork Mask: 255.255.255.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.3.6 Options [Enter Key] Main Menu: Options 5/5 [0000] Options: Serial Number [Up and Down Keys] [Esc Key] [Esc Key] 1/4 [5000] Options: Options List [Enter Key] 2/4 [5000] Options List: Linear Pre-Correction [Esc Key] [Up and Down Keys] Options: Enable Option 3/4 [5000] Options List: 2/7 [5200] Memoryless Non-Line.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.4 Start up The first screen that appears when powering ON the transmitter is: (example display of 2900W Tx) The First Presentation Screen shows the time of the manufactures and the model of the transmitter, and the system it was set for. For the sample screen above: Model: EC701HP - EC708HP System: 8VSB ATSC While no other key is pressed, these 2 presentation screens will be succeeding each other on the LCD.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Items on the SETUP menu Power Setup Description Program the RF output power level Turn ON and turn OFF the ALC (Automatic Level Control) Transmitter Setup Mute the or not the RF power output on the event of absence of Transport Stream Select local or remote the transmitter output level control.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.1 Power Setup Commands the software to set the transmission power of the equipment. Starting from the Main Menu: Select Setup and press ENTER. > Select Power Setup and press ENTER. To reach the desirable output power level, press the key (2), to increase the power or (4) to decrease the power.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) > Use the keys or to enable or disable the Mute. Hit key “” to view the next screen. > Use the keys or to select the option. Press key ESC to return to Setup Menu. 5.5.3 Image Frequency Suppression This software feature adjusts numerical values related with the amplitude and phase optimized for maximum image frequency suppression on the superior side band spectrum region.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> To program the values, use keys and . Enter To change between the parameters, use keys or . >> To program the values, use keys and . >> To program the values, use keys and . >> To program the values, use keys and . Press ESC to return to the Setup Menu. Starting from Setup Menu screen [1000]: > Select LO Leakage Suppression and press ENTER. The screen below will appear.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) ATTENTION When accessing this screen, by selecting option “YES”, the operator will be responsible for the changes done on this parameter, as well as the effects that these changes may cause in the equipment if not using the appropriate instruments and test point. 5.5.4 LO Adjustment (LO Leakage Suppression) An RF sample for monitoring purposes must be taken before the output mask filter.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) ATTENTION When accessing this screen, by selecting option “YES”, the operator will be responsible for the changes done on this parameter, as well as the effects that these changes may cause in the equipment if not using the appropriate instruments and test point. To access the Pre-Correction screen, select “Yes” by using the keys or . Selecting NO, the software goes to the previous screen.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.6 Modulation Settings On this screen option, it’s possible to turn the modulation process on and off. It is also possible to adjust the pilot level. Starting from Setup Menu screen [1000]: > Select Modulation Settings and press ENTER. The screen below will appear.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.7 Time and date configuration > Select Time and Date Setup and press ENTER. To program the date and time, use keys or . To change between the parameters, press the and . Press key ESC to return to Setup Menu. 5.5.8 Password Once a password is composed (by four numbers) it will become the set password for the equipment. Please be certain to capture and store your password in a safe place.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Once the the password is confirmed, the software goes back to the Password Setup. Hit key “” to view the next screen. > If the option Disable password is selected, it dispenses the use of password. Press key ESC to return to Setup Menu. 5.5.9 Transport Stream Input > Select Transport Stream Input and press ENTER. > Use the keys and to configure automatic or manual. Hit key “” to view the next screen.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.10 Alarms Mask > Select Alarms Mask and press ENTER. >> >> Use the keys or to select TS1, TS2 or TS1 / TS2. Press key ESC to return to Setup Menu and hit key “” to view the next screen. 5.5.11 USB Setup > Select USB Setup and press ENTER. > Use the keys or to configure USB. Press key ESC to return to Setup Menu and hit key “” to view the next screen. Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.12 USB Host Access Setup > Select USB Host Access Setup and press ENTER. Press key ESC to return to Setup Menu and hit key “” to view the next screen. 5.5.13 Crest Factor Reduction > The screen below will appear.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Use the keys or to configure the option and hit key “” to view the next screen. > Use the keys or to adjust the value and hit key “” to view the next screen. > Use the keys or to adjust the value. 5.5.14 Clock Reference > Select Clock Reference and press ENTER. >> Use the keys or to program the value. Hit key “” to view the next screen. >> Use the keys or to program the value.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Use the keys or to program the value. Hit key “” to view the next screen. >> Use the keys or to program the value. Hit key “” to view the next screen. >> Use the keys or to program the value. Hit key “” to view the next screen. >> Use the keys or to program the value. Hit key “” to view the next screen. >> Use the keys or to program the value. Hit key “” to view the next screen.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.15 Restore Web Password to Default > Select Restore Web Password to default and press ENTER. The screen below will appear. To access the Restore Web Password to default screen, select “Yes” by using the keys or . Press key ESC to return to Setup Menu and hit key “” to view the next screen. 5.5.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) ATTENTION: When applying the "Transistor Bias Adjustment" function, the power will be zeroed. After adjusting the currents, you must reprogram the output power through the Setup Menu (Power Setup Screen 1/1 [1100]). >> Use the key or to view the values. >> >> >> Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.5.17 PA Temperature Control Through this screen you can configure the operating temperature of the power amplifiers drawer. > Select PA Temperature Control and press ENTER. The following screen will be displayed: >> 55.0 Use the key or to set up. Confirm the selection by pressing ENTER. The temperature amplifier (PA) can be adjusted from 50ºC to 60ºC.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.6 Measurements Menu The measurements screens allows the measurements on the exciter’s parameters. The menu below profiles the possible measurements.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Measurements Menu Indications Clock Measurements Measurements Sub-Set Indications Int GPS This field displays NO SIGNAL or UNKOWN SIGNAL in the absence of a proper input signal. When validated, shows the PPS phase and frequency difference between this reference and the current PPS obtained with the internal control system of the OCXO (delivered on PPS output connector).
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.6.1 Power Shows the programmed and direct, reflected power measurements in the equipment output, ALC Reference Voltage. To access the Power screen, the sequence of screens below must be followed, starting from the initial menu: > Access Measurements > Access Power and hit ENTER > Hit key “” to view the other screens that are part of this menu. > > 5.6.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) > Select Transport Stream and hit ENTER. > Hit key “” to view the following screens > > > Hit ESC key to return to the Measurements screen. 5.6.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> Select Power Supply and hit ENTER. > Hit key “” to view the other screens that are part of this menu. > For select the drawer use the key or . Check the displayed data. Press ESC to return to the menu Drawer Measurements. >> Select Current and press ENTER. > Press the key “” to view the next screen. > > Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) > > Check the displayed data. Press ESC to return to the menu Drawer Measurements. >> Select Temperature and press ENTER. > Hit key “” to view the other screens that are part of this menu. > > > Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) > 5.6.4 Exciter Power Supply This screen shows the power supply status, indicating ‘OK’ or ‘Fail’. The measured voltages are +3.3V, +15V, +5V and +28V. Starting from the Measurements Menu [2000]: > Select Exciter Power Supply and hit Enter >> Use the Up and Down keys, and, to check the following voltage measurements. >> Hit ESC key to return to the Measurements screen. 5.6.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Press the ESC key to return to the Main Menu. 5.6.6 Software/Hardware Version This screen indicates the software name and version recorded in the modulator FPGA, digital exciter's microcontrollers and power drawers. Such name and version must be reported to the factory in case of maintenance and checking of occurrences. It shows also the digital exciter's hardware version.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> To return to the Measurements press ESC key. 5.6.7 Automatic Level Control This screen indicates the voltage levels related to the Automatic Level Control (ALC) loop. Starting from the Measurements Menu [2000]: > Select Automatic Level Control and hit ENTER. >> Hit ESC key to return to the Measurements screen. Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.6.8 Clock Measurements This screen allows checking the clock measurements. The figures below show how to access the Clock screen from the Measurements menu: > Select Clock Measurements and hit ENTER. >> Hit key “” to view the other screens that are part of this menu. >> >> >> >> >> Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> 5.6.9 Power Supply Voltages Displays the status of the power supply voltages (located at the bottom of the equipment rack). To verify these tensions in Measurements: > Select Eqp. Power Supply and press ENTER. >> NOTE: Function available for equipments with more than one drawer power. 5.7 Alarm System An alarm is indicated by one of the 3 red LEDs located on the front panel of the digital exciter.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> Select Current Alarms and press Enter. Quan ty of current alarms >> The second digit indicates the quantity of current alarms. If there are more than one alarm, Hit key “” to view the other current alarms. The “Alarm List Empty!” means the alarm is no longer present and there are no current alarms. Press ESC to return to the System Alarms/Log menu. 5.7.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.7.3 Drawers Alarms While in the System Alarms/Log screen it is possible to check and review all alarms, current and past, on the RF power drawer. From the System Alarms/log, screen [3000]. Starting from the System Alarms Menu [3000]: >> Select Drawers Alarms and hit ENTER. >> Select Current Alarms and press ENTER to check current alarms. Use the keys or to select one among many RF power drawers.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.7.4 Clear Past Alarms Under this menu, it’s possible to erase the past alarms occurrence. Starting from the System Alarms Menu [3000]: >> Select Clear Past Alarms and hit ENTER to erase past alarms occurrences. The tables below show all the possible alarms and the respective measures to be taken when an alarm occurs. Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Exciter Alarms: The table below profiles all possible alarms generated on the Digital Exciter and the associated troubleshooting actions to take. Digital Alarms Exciter: ALARM MESSAGE Sync loss TS 1! Sync loss TS 2! LO Lock Fail! Clock Lock Fail! Fifo Overflow! +15V, +3.3V, +2 8V, +5V FPGA Comm. Fail! FIFO Underflow! Clock / CXO Fail! Remote Mute! Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) System Alarms ALARM MESSAGE Drawer Comm. ! ALARM DESCRIPTION At least one drawer is not communicating with the Exciter ACTION THAT FOLLOWS Check the physical connection on the RS485 cabling. These connections are located on the Exciter rear panel, green connector. On the other end, at the rear panel of the RF Power Drawers, DB-15 connector. Using the Hyper-Terminal, check the parameters on the RF Power Module.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) System Alarms ALARM MESSAGE ALARM DESCRIPTION Phase Loss! Main Breaker is disconnected. ACTION THAT FOLLOWS Check Main Breaker OFF. Get in contact with Hitachi Kokusai Linear's technical support service. Indication that the transmitter is Check the Power Meter Dir. Coupler Output Power Zero! programmed, but there is no Check the power reading at the PC output power controls.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.8 Remote Management System (Tele-supervision) All of the equipment parameters such as: transmission power level, power supply measurements, alarm verification and all the possible functional selections may be accessed two different ways. Frontal Panel – Through the frontal panel all of the equipment measurements and configurations may be accessed, as shown in the operation section. Local or remote PC virtual.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.8.2 Mask Configuration > Select Sub-network Mask and press ENTER. Configure the desired IP by using the keys or and or . Press ESC to the Remote Access screen . Hit key “” to view the next screen. 5.8.3 Gateway Configuration > Access the Gateway and press ENTER. Configure the gateway address by using the keys or and or . 5.8.4 Host Address Configuration >> Select Host Address and press ENTER.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) Configure the IP Address by using the keys or and or . Subnetwork Mask >> Access the Subnetwork Mask and press ENTER. Configure the Subnetwork Mask by using the keys or and or . Press ESC to the Host Address screen. Access the Host Port and press ENTER. Host Port >> Configure the Subnetwork Mask by using the keys or and or . Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) 5.9 Options >> Select Options and press ENTER. >> Select Serial Number and press ENTER. Hit key “” to view the next screen. >> Select Option List and press ENTER. >> Hit key “” to view the other screens that are part of this menu. >> >> >> Manual Rev. 0.
Section 5 - System Operation Manual (E-Compact ATSC Transmitters - EC701HP thru EC708HP) >> >> >> Press ESC to return the Options screen. Hit key “” to view the next screen. >> Select Enable Option and press ENTER. >> Select time Limited Options and press ENTER. Hit key “” to view the next screen. Manual Rev. 0.
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters Section 6 Preventive / Corrective 6 Maintenance 6.1 Introduction This section addresses the procedures to be adopted for Preventive, Periodic, Corrective Maintenance routines in order to ensure the life of the TV Transmitter. The Transmitter must only be opened by authorized service personnel who have received adequate training to perform maintenance on this type of equipment.
Manual Rev. 0.0 - June 2016 1. Item number Model: Cleanning Task Description Date: Frequency: Semester (1.7) After cleaning, place the side panels and connect the device to the mains, putting it into operation according to the procedure for initial activation. (1.6) Replace the fan air ?lters in the power drawers (high power transmitters only). Check how replacement is done in Corrective Maintenance. (1.5) Clean fan air ?lters in power drawers (medium-power transmitters only).
Manual Rev. 0.0 - June 2016 Alarm veri?cation Measurements veri?cation 3. 4. Visual Inspection Task 2. Item number Model: Description Date: Frequency: Semester Verify the transmitter's alarm log and in case of recurring alarms, contact Hitachi Kokusai Linear technical support. (3.3) Check the voltages of the sources, currents and temperatures of the power drawers through the Measurements - Drawers. (3.
Manual Rev. 0.0 - June 2016 Responsible: 6. 5. Item number Model: Adjusting Quiescent Currents General Inspection Task Description Date: Frequency: Semester Date: Note: When performing this operation, the programmed power will change to 0W. After adjusting the currents, set the output power to the same value that was programmed (Display: Setup Menu -> Power Setup). Adjust the quiescent currents of the transistors through the driver display (Screen: Setup Menu -> Transistor Aging Adjustment).
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters 6.2.1 Quiescent currents Automatic adjustment procedure Due to natural variations of LDMOS devices as they operate over time, it is recommended to redo the setting of the quiescent current of the amplifier modules’ transistors. This "re-tuning" procedure has been automated and is done by accessing the Transistor Aging Adjustment screen (21/21) in the Setup menu of the digital driver and it will take only a few seconds.
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters 6.3 Corrective Maintenance 6.3.1 Visual identification of alarms (leds) STEP 1 Check the driver's front panel for the status of each led. Leds acesos Figure 1 - Front partial view of the driver The front panel LED indicates when lit: POWER ON – Device is on SYNC. LOSS – Input Signal Loss. CURRENT ALARM – An alarm is occurring. PAST ALARM – Existence of an old alarm in the "Alarm Log".
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters 6.3.3 Power Drawer Air Filter 6.3.3.1 Replacement Replacing the air filter is recommended only in the power drawers (MOD GV 40001) of the ECompact high-power transmitters. For replacement, see the steps below.: STEP 1 Remove the four screws from the front panel of the drawer. Figure 2 - Front view - Power Drawer - MOD GV 40001 STEP 2 Detatch the front panel.
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters 2n d p r ot e ct g r i d i on Air F il ter 1s t p r ot e c ti on gr i d Screws Parafusos painel front frontal panel Screws Parafusos front painel frontal panel Figure 5 - Power Drawer - MOD GV 40001 Order Information: ITEM 1 DESCRIPTION FIL VEN 109-1001M13 HITACHI CODE REFERENCE HKL1000263 AIR FILTER Note: For a correct fitting of the 1st protection grid in the 2nd protection grid, the design of the 1st grid must match the desig
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters 6.3.3.2 Cleaning The power drawer air filters (MOD GV 40010) of the medium power transmitters are washable and can be removed by the front panel of the drawer. Below is the sequence for removing the air filter. STEP 1 Remove the screws from the front panel of the drawer. STEP 2 Remove the front panel of the drawer. STEP 3 Remove air filter bolts.
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters STEP 1 Remove the four screws from the front panel of the drawer. Figure 7 - Front view - Power Drawer - MOD GV 40001 STEP 2 Detatch drawer’s front panel. STEP 3 Carefully detach and remove the first filter screen from the air filter. 1st protection grid Figure 8 - Air filter’s 1st protection grid STEP 4 Remove the last filter grid from the air filter and the fan.
Section 6 - Preventive / Corrective Maintenance E-Compact Transmitters STEP 5 Disconnect the plug cables from the fan bus board (CIP 8861). Cabo Plug cplug able Figure 10 - Fan connection STEP 6 Replace the three fans. STEP 7 Reinstall the fans by reversing the order of the above steps Power Drawer MOD GV 40010 / 40033 (Medium Power) To replace the fans, follow the steps below.: STEP 1 Remove the screws from the front panel of the drawer. STEP 2 Remove the front panel of the drawer.
