Harris Broadcast Flexiva Fax 5kw Technical Manual

Harris broadcast flexiva transmitter series technical manual

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TECHNICAL MANUAL

FAX 5/10/20/30/40KW

Transmitter Series

Revision J

888-2720-001

Harris Broadcast is an independent company not affiliated with Harris Corporation.

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Page 1 TECHNICAL MANUAL FAX 5/10/20/30/40KW Transmitter Series Revision J 888-2720-001 Harris Broadcast is an independent company not affiliated with Harris Corporation.
Page 4 English without the written consent of Harris Broadcast. A reasonable number of copies of this document may be made for internal use only. All others uses are illegal.
Page 5 Manual Revision History Flexiva FAX 5/10/20/30/40kW Transmitter Series REV. DATE Pages Affected / Description Preliminary Feb 2011 Preliminary - in process April 9, 2012 P52641 Update all sections May 23, 2012 P52961 Added 30/40kW models, general updates in all sections Aug 23, 2012 P53607 Updates to all sections Feb 18, 2013 P54586 Updates to all sections...
Page 6 Technical Assistance Technical and troubleshooting assistance for Harris Broadcast products is available from the field service department during normal business hours 8:00AM to 5:00PM CST. Telephone +1‐217‐222‐8200, FAX +1‐217‐221‐7086, email tsupport@harrisbroadcast.com. Emergency service is available 24 hours a day, seven days a week, by telephone only. Online assistance, including technical manuals, software downloads, and service bulletins, is available at http://www.harrisbroadcast.com/servicesandsupport/default.asp. Address written correspondence to Field Service Dept. Harris Broadcast P.O. Box 4290 Quincy, IL 62305‐4290, USA. For global service contact information, visit: http://www.harrisbroadcast.com/contactus. NOTE: For all service and parts correspondence, please provide the sales order number, as well as the serial number for the transmitter or part in question. Record those numbers here: ___________________________________/___________________________________ Provide these numbers for any written request, or have these numbers ready in the event you choose to call regarding any service or parts requests. For warranty claims it will be required. For out of warranty products, this will help us identify what hardware shipped. Replaceable Parts Service The service parts department is available from 7:00AM to 5:00 PM CST Monday ‐ Friday, and 8:00AM to 12:00PM CST on Saturday. Telephone +1‐217‐221‐7500 or email servicepartsreq@harrisbroadcast.com. Emergency parts are available 24 hours a day, seven days a week, by telephone only. Unpacking Carefully unpack the equipment and perform a visual inspection to determine if any damage was incurred during shipment. Retain the shipping materials until it has been verified that all equipment has been received undamaged. Locate and retain all packing check lists. Use the packing check list to help locate and identify any components or assemblies which are removed for shipping and must be reinstalled. Also remove any shipping supports, straps, and packing materials prior to initial turn on. Returns And Exchanges No equipment can be returned unless written approval and a return authorization is received from Harris Broadcast. Special shipping instructions and coding will be provided to assure proper handling. Complete details regarding circumstances and reasons for return are to be included in the request for return. Custom equipment or special order equipment is not returnable. In those instances where return or exchange of equipment is at the request of the customer, or convenience of the customer, a restocking fee will be charged. All returns will be sent freight prepaid and properly insured by the customer. When communicating with Harris Broadcast, specify the Harris Broadcast order number or invoice number. WARNING: Disconnect primary power prior to servicing.
Page 7 WARNING: Disconnect primary power prior to servicing.
Page 9 WARNING: THE CURRENTS AND VOLTAGES IN THIS EQUIPMENT ARE DANGEROUS. PER‐ SONNEL MUST AT ALL TIMES OBSERVE SAFETY WARNINGS, INSTRUCTIONS AND REGULATIONS. This manual is intended as a general guide for trained and qualified personnel who are aware of the dangers inherent in handling potentially hazardous electrical/electronic circuits. It is not intended to contain a complete statement of all safety precautions which should be observed by personnel in using this or other electronic equipment. The installation, operation, maintenance and service of this equipment involves risks both to personnel and equipment, and must be performed only by qualified personnel exercising due care. Harris Broadcast shall not be responsible for injury or damage resulting from improper procedures or from the use of improperly trained or inexperienced personnel performing such tasks. During installation and operation of this equipment, local building codes and fire protection standards must be observed. The following National Fire Protection Association (NFPA) standards are recommended as reference: ‐ Automatic Fire Detectors, No. 72E ‐ Installation, Maintenance, and Use of Portable Fire Extinguishers, No. 10 ‐ Halogenated Fire Extinguishing Agent Systems, No. 12A WARNING: ALWAYS DISCONNECT POWER BEFORE OPENING COVERS, DOORS, ENCLO‐ SURES, GATES, PANELS OR SHIELDS. ALWAYS USE GROUNDING STICKS AND SHORT OUT HIGH VOLTAGE POINTS BEFORE SERVICING. NEVER MAKE INTER‐ NAL ADJUSTMENTS, PERFORM MAINTENANCE OR SERVICE WHEN ALONE OR WHEN FATIGUED. Do not remove, short‐circuit or tamper with interlock switches on access covers, doors, enclosures, gates, panels or shields. Keep away from live circuits, know your equipment and don’t take chances. WARNING: IN CASE OF EMERGENCY ENSURE THAT POWER HAS BEEN DISCONNECTED. IF OIL FILLED OR ELECTROLYTIC CAPACITORS ARE UTILIZED IN YOUR EQUIPMENT, AND IF A LEAK OR BULGE IS APPARENT ON THE CAPACITOR CASE WHEN THE UNIT IS OPENED FOR SERVICE OR MAINTENANCE, ALLOW THE UNIT TO COOL DOWN BEFORE ATTEMPTING TO REMOVE THE DEFECTIVE CAPACITOR. DO NOT ATTEMPT TO SERVICE A DEFECTIVE CAPACITOR WHILE IT IS HOT DUE TO THE POSSIBILITY OF A CASE RUPTURE AND SUBSEQUENT INJURY. WARNING: Disconnect primary power prior to servicing.
Page 10 WARNING: Disconnect primary power prior to servicing.
Page 11 FIRST‐AID Personnel engaged in the installation, operation, maintenance or servicing of this equipment are urged to become familiar with first‐aid theory and practices. The following information is not intended to be complete first‐aid procedures, it is a brief and is only to be used as a reference. It is the duty of all personnel using the equipment to be prepared to give adequate Emergency First Aid and there by prevent avoidable loss of life. Treatment of Electrical Burns 1. Extensive burned and broken skin a. Cover area with clean sheet or cloth. (Cleanest available cloth article.) b. Do not break blisters, remove tissue, remove adhered particles of clothing, or apply any salve or ointment. c. Treat victim for shock as required. d. Arrange transportation to a hospital as quickly as possible. e. If arms or legs are affected keep them elevated. NOTE: If medical help will not be available within an hour and the victim is conscious and not vomiting, give him a weak solution of salt and soda: 1 level teaspoonful of salt and 1/2 level teaspoonful of baking soda to each quart of water (neither hot or cold). Allow victim to sip slowly about 4 ounces (a half of glass) over a period of 15 minutes. Discontinue fluid if vomiting occurs. (Do not give alcohol.) 2. Less severe burns ‐ (1st & 2nd degree) a. Apply cool (not ice cold) compresses using the cleanest available cloth article. b. Do not break blisters, remove tissue, remove adhered particles of clothing, or apply salve or ointment. c. Apply clean dry dressing if necessary. d. Treat victim for shock as required. e. Arrange transportation to a hospital as quickly as possible. f.
Page 12 Guide to Using Parts List Information The Replaceable Parts List Index portrays a tree structure with the major items being left most in the index. The example below shows the Transmitter as the highest item in the tree structure. If you were to look at the bill of materials table for the Transmitter you would find the Control Cabinet, the PA Cabinet, and the Output Cabinet. In the Replaceable Parts List Index the Control Cabinet, PA Cabinet, and Output Cabinet show up one indentation level below the Transmitter and implies that they are used in the Transmitter. The Controller Board is indented one level below the Control Cabinet so it will show up in the bill of material for the Control Cabinet. The tree structure of this same index is shown to the right of the table and shows indentation level versus tree structure level. Example of Replaceable Parts List Index and equivalent tree structure: Transmitter Replaceable Parts List Index Part Number Page 995 9283 001 Table 7‐1. Transmitter 995 9283 001 7‐2 PA Cabinet Output Cabinet Control Cabinet Table 7‐2. Control Cabinet 981 9244 002 7‐3 981 9400 002 981 9450 001 981 9244 002 Table 7‐3. Controller Board 901 8344 002 7‐6 Table 7‐4. PA Cabinet 981 9400 002 7‐7 PA Amplifier Controller Board Table 7‐5. PA Amplifier 971 7894 002 7‐9...
Page 13: Table Of Contents
Table of Contents Section‐1 Introduction Initial Turn On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2‐13 User Remote Control Connection . . . . . . . . . . . . . 2‐15 Purpose of This Manual . . . . . . . . . . . . . . . . . . . . . . 1‐1 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐1 Section‐3 Operation FAX Options and Spare Parts Kits . . . . . . . . . . . . . . . 1‐2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3‐1 FAX5/10 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐2 FAX20 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐2 Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . 3‐1 FAX30 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐3 Front Panel Controls and Indicators. . . . . . . . . . . 3‐1 FAX40 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐3 Internal Controls and Indicators . . . . . . . . . . . . . . . 3‐3 Exciter Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1‐3 RF Sample and RTAC Ports . . . . . . . . . . . . . . . . . . 3‐5 FAX Spare Parts Kits . . . . . . . . . . . . . . . . . . . . . . . . 1‐4 Front Panel Operation . . . . . . . . . . . . . . . . . . . . . . . 3‐5 FAX Transmitter Description and Features . . . . . . . 1‐4 ON/OFF Operation. . . . . . . . . . . . . . . . . . . . . . . . . 3‐6 FAX5/10 Photos/Mechanical/Cooling/Electrical Data1‐5 Power Raise/Lower Procedure . . . . . . . . . . . . . . . 3‐6...
Page 14 Table of Contents System>System Setup>System Service Menu. . 3‐30 Reject Load Calibration (Power/Fan Speed) FAX20/30/40 System>System Setup>System Config Menu . . 3‐31 Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5‐20 System>System Setup>Network Menu . . . . . . . 3‐31 Backup Control Mode Power Setting . . . . . . . . .5‐21 System>System Setup>Network>SNMP Menu. 3‐32 UPS Mode Power Setup . . . . . . . . . . . . . . . . . . . .5‐21 System>System Setup>Network>NTP Menu . . 3‐32 IPA Bypass FAX 5/10 Only . . . . . . . . . . . . . . . . . . .5‐21 SYSTEM>System Setup>Network>ISP Menu. . . 3‐33 Board and Assembly Replacement Procedures . .5‐22 Backplane Board Replacement . . . . . . . . . . . . . .5‐22 Section‐4 Theory System Interface Control Board Replacement . .5‐23 Multi Unit System Interface Board Replacement5‐25 FAX Transmitter Configurations . . . . . . . . . . . . . . . 4‐1 Control and Display Board Replacement . . . . . .5‐26 10kW RF Block Diagram Description . . . . . . . . . . 4‐1 14‐Way Power Splitter Assembly Replacement . 5‐27 FAX5 RF Block Diagram . . . . . . . . . . . . . . . . . . . . . ...
Page 15: Section-1 Introduction
FAX 5/10/20/30/40KW 1‐1 October 28, 2013 Section-1 Introduction Purpose of This Manual This manual provides important information for the proper installation, operation and maintenance of the Flexiva FAX Series of transmitters including the 5kW, 10kW, 20kW, 30kW, and 40kW systems. The various sections of the manual provide the following types of information. • Section 1: Identifies the options available including spare parts kits. Provides detailed information required prior to the installation of the transmitter, including mechanical, cooling and electrical data, Ground‐ ing, AC Mains requirements and RF transmission line information. • Section 2: Details the proper steps to install the transmitter and putting it on the air for the first time. • Section 3: Provides detailed information on how to properly operate the transmitter. • Section 4: Details the Theory of Operation of the transmitter. • Section 5: Maintenance, detailed steps to clean, calibrate and change modules in the transmitter. • Section 6: Troubleshooting, included as a service aid to be used along with sections 4 and 5 by qualified person‐ nel to identify and correct an equipment malfunction. Technical Support Harris Broadcast offers 24 hour telephone technical support for all radio and television products from the United States. To get the best assistance as quickly as possible please have the transmitter model and serial number ready when calling or sending an email. 24‐hour Technical Support and Parts Phone ‐ 1‐217‐222‐8200 (follow prompts) 24‐hour Technical Support and Parts FAX ‐ 1‐217‐221‐7086 (follow prompts) Technical Support Email Address ‐ tsupport@harrisbroadcast.com Website ‐ www.harrisbroadcast.com Customer portal access can be obtained via www.harrisbroadcast.com/servicesandsupport. Customers must register with a username and password to gain access to; technical documentation, software upgrades and service ...
Page 16: Fax Options And Spare Parts Kits
1‐2 Section-1 Introduction October 28, 2013 Asia Harris Communications (Shenzhen) Ltd. Harris Communications (China) R3‐B2, High‐Tech Industrial Park, Rm 3711, CITIC Square Nanshan Dist., Shenzhen China 518057 1168 Nanjing Road (W) Telephone: +86 (0) 755 663 7928. Shanghai, China 200041 facsimile: +86 (0) 755 663 7048 Telephone: +86 (0) 21 5292 5660 e‐mail: Dpan@harrisbroadcast.com facsimile: +86 (0) 21 5292 5955 e‐mail: Jmei@harrisbroadcast.com FAX Options and Spare Parts Kits This section summarizes the options that are available for purchase with the Harris Broadcast FAX transmitters. The FAX can incorporate any available Harris Broadcast exciter in both single and dual exciter configurations. There are also a number of spare parts kits available, some of which are model dependant. Please see 843‐5614‐102 in front section of the drawing package for your model transmitter for a complete listing. 1.3.1 FAX5/10 Options FAX5/10 is a single power block and can be purchased as a standalone transmitter and racked in a customer rack. It may also be purchased in a Harris Broadcast rack. Harris Broadcast can provide three different model racks for the FAX5/10 transmitter. Documentation Package Part Number ‐ 943‐5614‐093 Units manufactured prior to August 2012 Documentation Package Part Number ‐ 943‐5614‐476 Units manufactured after to August 2012 Harris Broadcast Basic Rack ‐ 981‐0136‐012 ‐ 37RU Rack with rear door Harris Broadcast Basic Rack ‐ 981‐0136‐011 ‐ Basic Rack, plus RF Line to top Harris Broadcast Deluxe Rack ‐ 981‐0136‐004 ‐ Basic rack plus AC Power Distribution Panel 3‐Phase Delta ..
Page 17: Fax30 Options
FAX 5/10/20/30/40KW 1‐3 October 28, 2013 1.3.3 FAX30 Options The FAX30 requires a Harris Broadcast rack due the mounting of the power block combiners and associated reject loads. The basic rack comes with the RF line installed to top of the rack and can be purchased without the AC Distribution Panel. No single phase AC Distribution Panel available for this model. To use single phase to the FAX30, use three feeds with breakers in a wall mounted panel external to the transmitter rack. Documentation Package Part Number ‐ 943‐5614‐341 Units manufactured prior to August 2012 Documentation Package Part Number ‐ 943‐5614‐478 Units manufactured after to August 2012 3‐Phase Delta ..971‐0054‐041 3‐Phase Wye..971‐0054‐042 220 VAC Strip..253‐0253‐000 120 VAC Strip..253‐0254‐000 Vented Rear Door ‐ 943‐5602‐481 ‐ Replaces solid panel door (2 required) Air Plenum Kit ‐ 981‐0031‐052 ‐ Fits front of Harris Broadcast Rack only (2 required) Remote Control Breakout Board ‐ 901‐0218‐201GT ‐ Converts connections from dB‐25 to Screw terminals 1.3.4 FAX40 Options The FAX40 requires a Harris Broadcast rack due the mounting of the power block combiners and associated reject loads. The basic rack comes with the RF line installed to top of the rack and can be purchased without the AC Distribution Panel. No single phase AC Distribution Panel available for this model. To use single phase to the FAX40, use four feeds with breakers in a wall mounted panel external to the transmitter rack. Documentation Package Part Number ‐ 943‐5614‐342 Units manufactured prior to August 2012 Documentation Package Part Number ‐ 943‐5614‐478 Units manufactured after to August 2012 3‐Phase Delta ..971‐0054‐043 3‐Phase Wye..971‐0054‐044 220 VAC Strip..
Page 18: Fax Spare Parts Kits
1‐4 Section-1 Introduction October 28, 2013 1.3.6 FAX Spare Parts Kits The following spares kits are available. FAX Spare Parts Kit (ALL MODELS): Module Spares ‐ 990‐1201‐001 ‐ Contains 1 each PA and PS modules FAX Spare Parts Kit FAX20/30/40: Board Spares 20K ‐ 990‐1201‐010 ‐ Contains 1 each of the control and interface boards FAX Spare Parts Kit FAX5/10: Board Spares 10K ‐ 990‐1201‐002 ‐ Contains 1 each of the control and interface boards Basic Spares 10K ‐ 990‐1201‐003 ‐ Contains fuses and a fan FAX Spare Parts Kit FAX20: Basic Spares 20K ‐ 990‐1201‐004 ‐ Contains fuses, 2 fans, and reject load resistor FAX Spare Parts Kit FAX30/40: Basic Spares 30/40K ‐ 990‐1201‐007 ‐ Contains fuses, 2 fans, and reject load resistor FAX Transmitter Description and Features The Flexiva FAX series transmitters are built based on a 10 kW building power block. The FAX 10 transmitter has one power block, the FAX 5 uses the same power block as a FAX10 but fewer PA modules and power supplies. For the higher power transmitters FAX20/30/40, multiple 10 kW power blocks are combined using hybrid combiners to achieve their rated power. All transmitters utilize the same control cards and software. FAX Transmitter Features • FM air‐cooled transmitter • Quad Mode operation in FM, FM+HD, HD and DRM+ • Broadband design and frequency agile across the FM Band 88‐108 MHz • Hot Pluggable Power Supplies and Power Amplifiers •...
Page 19: Fax5/10 Photos/Mechanical/Cooling/Electrical Data1-5
FAX 5/10/20/30/40KW 1‐5 October 28, 2013 FAX5/10 Photos/Mechanical/Cooling/Electrical Data Flexiva Exciter B FAX 10kW Transmitter Exciter A 10kW 10kW Transmitter Figure 1-1 FAX5/10 Transmitter System Front View The FAX10 transmitter system shown is setup with dual exciters to provide redundancy for additional on‐air reliability. Exciter A in the lower position in the rack is always the main exciter in the system. The upper Exciter B is always the backup exciter in the system. These positions hold true for all model of high power FAX Transmitters. The FAX5 is the same chassis and hardware but contains four less power amplifiers and three less power supply modules. See Section 4 for detailed differences between FAX 5 and FAX10. Note For Outline drawing and Rack mechanical information see drawing 843-5614-103 in the documentation package.
Page 20 1‐6 Section-1 Introduction October 28, 2013 Figure 1-2 FAX5/10 in Harris Broadcast Deluxe Rack Rear View WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 21 FAX 5/10/20/30/40KW 1‐7 October 28, 2013 ELECTRICAL / COOLING / MECHANICAL DATA HARRIS FAX 5K, 5 kW FM TRANSMITTER All table values referenced to maximum power from FCC type notification range and minmum efficiency values. PARAMETER NAME VALUE ELECTRICAL 5000 W (FM) Nominal output power FCC type-notified output FM+HD...
Page 22 1‐8 Section-1 Introduction October 28, 2013 ELECTRICAL / COOLING / MECHANICAL DATA HARRIS FAX 10K, 10 kW FM TRANSMITTER All table values referenced to maximum power from FCC type notification range and minmum efficiency values. PARAMETER NAME VALUE ELECTRICAL 10000 W (FM) Nominal output power FCC type-notified output FM+HD...
Page 23: Fax20 Photos/Mechanical/Cooling/Electrical Data 1-9
FAX 5/10/20/30/40KW 1‐9 October 28, 2013 FAX20 Photos/Mechanical/Cooling/Electrical Data Figure 1-4 FAX20 Transmitter Front View The FAX20 transmitter is comprised of two 10 kW Power Blocks combined to make 20 kW. The FAX20 comes standard in a Harris Broadcast deluxe rack with RF line to the top of the rack and the AC Power Distribution panel installed. All FAX Models covered in this manual have dual exciter capability. Note For Outline drawing and Rack mechanical information see drawing 843-5614-103 in the documentation package. The Electrical and HVAC contractors should be provided a copy of this drawing for reference. 888‐2720‐001 WARNING: Disconnect primary power prior to servicing.
Page 25 FAX 5/10/20/30/40KW 1‐11 October 28, 2013 ELECTRICAL / COOLING / MECHANICAL DATA HARRIS FAX20, 20 kW FM TRANSMITTER All table values referenced to maximum power from FCC type notification range and minmum efficiency values. PARAMETER NAME VALUE ELECTRICAL 20000 W (FM) Nominal output power FCC type-notified output FM+HD...
Page 26: Fax30 Photos/Mechanical/Cooling/Electrical Data1-12
1‐12 Section-1 Introduction October 28, 2013 FAX30 Photos/Mechanical/Cooling/Electrical Data Figure 1-7 FAX 30kW Transmitter Front View The FAX30 transmitter is comprised of three 10 kW Power Blocks combined to make 30 kW. The FAX30 comes standard in a Harris Broadcast deluxe rack with RF line to the top of the rack and the AC Power Distribution panel installed. All FAX Models covered in this manual have dual exciter capability. Note For Outline drawing and Rack mechanical information see drawing 843-5614-308 in the documentation package. The Electrical and HVAC contractors should be provided a copy of this drawing for reference. WARNING: Disconnect primary power prior to servicing.
Page 28 1‐14 Section-1 Introduction October 28, 2013 ELECTRICAL / COOLING / MECHANICAL DATA HARRIS FAX 30K, 30 kW FM TRANSMITTER All table values referenced to maximum power from FCC type notification range and minmum efficiency values. VALUE PARAMETER NAME ELECTRICAL 30000 W (FM) Nominal output power FCC type-notified output FM+HD...
Page 29: Fax40 Photos/Mechanical/Cooling/Electrical Data1-15
FAX 5/10/20/30/40KW 1‐15 October 28, 2013 FAX40 Photos/Mechanical/Cooling/Electrical Data Figure 1-10 FAX40 Transmitter Front View The FAX40 transmitter is comprised of four 10 kW Power Blocks combined to make 40 kW. The FAX40 comes standard in a Harris Broadcast deluxe rack with RF line to the top of the rack and the AC Power Distribution panel installed. All FAX Models covered in this manual have single exciter capability. Note For Outline drawing and Rack mechanical information see drawing 843-5614-309 in the documentation package. The Electrical and HVAC contractors should be provided a copy of this drawing for reference. 888‐2720‐001 WARNING: Disconnect primary power prior to servicing.
Page 30 1‐16 Section-1 Introduction October 28, 2013 Figure 1-11 FAX 40kW Transmitter Rear View Doors Open WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 31 FAX 5/10/20/30/40KW 1‐17 October 28, 2013 ELECTRICAL / COOLING / MECHANICAL DATA HARRIS FAX 40K, 40 kW FM TRANSMITTER All table values referenced to maximum power from FCC type notification range and minmum efficiency values. VALUE PARAMETER NAME ELECTRICAL 40000 W (FM) Nominal output power FCC type-notified output FM+HD...
Page 32: Fax Specifications(All Models)
1‐18 Section-1 Introduction October 28, 2013 FAX Specifications(All Models) For AC mains/power consumption, mechanical and other model specific specifications and information see the ECM sheets in this section. For All audio specs and frequency stability see exciter manual that came with the transmitter. Table 1-1 Specifications for all models transmitters Frequency Range 87.5‐108 MHz Operating Modes "Quad‐Mode", FM Only, FM+HD, HD Only,Split Level Power Stability ±0.25 dB Asynchronous AM 55 dB Minimum below equivalent 100% amplitude modulation by 400 Hz using 75 µSec de‐emphasis Synchronous AM 50 dB minimum below equivalent 100% amplitude modulation using 75 µSec de‐ emphasis and 400 Hz high‐pass filter (FM Deviation ±75 kHz by a 1 kHz sinewave). Measured at wideband input RF Harmonic and Spurious Meets or exceeds all FCC, CCIR and ITU requirements Suppression VSWR Protected against open or short circuit at all phase angles. Foldback user adjustable from 1.3 to 1.5:1. VSWR shutdown at 1.5:1 Altitude Maximum 9,843 feet (3000 M) elevation above sea level Ambient Temperature Range 32° to 113° F (0 to 45° C), derated 35.6° F (2° C) per 1000 feet (300m) elevation Humidity 95% Non‐condensing...
Page 33: 1.10 Selecting Location For Transmitter Placement
FAX 5/10/20/30/40KW 1‐19 October 28, 2013 1.10 Selecting Location for Transmitter Placement Selecting a good location for the transmitter to be placed is very important. There are several points that should be considered if the transmitter is in a new location or being moved to a new building. Read through each point to ensure a proper and safe installation. • Make sure doors into the site are large enough to accommodate the transmitter. Doorway height can some‐ times be a problem. If the doors are not tall enough extra manpower may be required to get the transmitter tipped down to clear the door. • Ensure the floor where the transmitter is to be placed can support the weight of the transmitter. See the ECM sheets in this section for dimensions and weight of your model. • The location should be selected so there is enough clearance around the transmitter with the doors open to meet local electrical and safety codes. • Breakers and or disconnects should be within sight of the transmitter. If possible the best location is directly behind the transmitter on the wall. • Proper lightning protection should be installed in the building by a professional electrical contractor. Ensure that it is installed as close to the AC Mains entrance into the building as well as close to the station reference ground. • If the transmitter is installed in a high RF environment, it is a good practice to utilize cable ferrites on all con‐ ductors to minimize RF interference. • Do not install the transmitter in places where it may be exposed to mechanical shocks, excessive vibration, dust, water, salty air, or acidic gas. • If outside air is brought into the building it should be well filtered to keep dirt out of the building and the transmitter. See Section 1.11 Cooling for further details.
Page 34 1‐20 Section-1 Introduction October 28, 2013 Figure 1-13 Cooling Intake/Exhaust Note Consult the data sheets in this section of the manual for details of cooling requirements for each FAX model. In general, transmitter cooling systems fall into two categories: An open system in which the heated transmitter exhaust passes through a dedicated duct to the outside of the transmitter building. The transmitter may receive fresh outside air directly through a separate intake duct or may receive ambient air from the transmitter hall, with the transmitter hall being supplied make‐up air from outside via a filtered inlet vent. With an open system, it is imperative to correctly balance the input and output air flow volumes, paying particular attention to the pressure drops in external ducts and providing external blowers to overcome these losses and ensure correct air flow. The Flexiva transmitter internal air system is designed to supply sufficient air at the required static pressure to cool the transmitter only and all external duct losses must be compensated for by external blowers (this includes the optional intake plenum). Outside air containing salt or pollution must have those items removed by an adequate filtration system, and any pressure drops caused by filtration must also be ...
Page 35: 1.12 Grounding Requirements
FAX 5/10/20/30/40KW 1‐21 October 28, 2013 1.12 Grounding Requirements Two separate ground connections are required for the Flexiva FAX series transmitter: an AC safety ground and an RF earth ground. The AC safety ground prevents an electrocution hazard should a dangerous potential from inside the unit accidentally contact an exposed metal surface. This is done by ensuring all metal surfaces have an uninterrupted connection back to the physical earth (PE) terminal at the AC mains service entrance. A physical earth (PE) connection is typically tied to the return current terminal either indoors at the main distribution panel or outside “at the pole” (as dictated by local codes), thus allowing any fault current to safely return to the power source. The AC safety ground connection is made automatically for the exciter and other Harris Broadcast auxiliary equipment via the green/yellow wire on the third prong of the AC input cord. When the exciter and any auxiliary equipment are connected directly to a user‐supplied outlet box or distribution panel, the green‐yellow wire from the AC input cord(s) must terminate at the PE terminal at the AC mains source. In the case of a Harris Broadcast‐supplied AC distribution chassis, the green/yellow earth wire from the incoming AC mains service terminates at the PE terminal of the AC distribution chassis (ground symbol inside circle). The individual subassemblies making up the transmitter connect via the green/yellow wire of their mains cords to the same PE terminal on the AC distribution chassis. When present, a rack buss‐bar will also connect to the PE terminal. Individual panels making up the rack cabinet without a solid, permanent connection back to the PE terminal that might be exposed to unsafe voltages (e.g. doors on hinges) will connect to the PE terminal via a wire jumper connection to the buss‐bar. The RF earth ground prevents damage to the equipment during lightning‐induced transients and reduces RF interference to low level circuits in general. An RF ground strap attachment point is located at the rear of the FAX transmitter and exciter chassis. This connection is suitable for use in a single point grounding system, with the ground strap attached to the equipment rack and the rack, in turn, to a common grounding plate. A minimum 2" copper strap is recommended. Note Observe this important distinction: The AC safety ground ensures that energy originating at the AC mains source is always safely returned to the AC mains source (i.e.
Page 36: 1.14 Rf Line Requirements
1‐22 Section-1 Introduction October 28, 2013 • Amount of line variation expected • Line Voltage and frequency • Single or three phase • Current output required • Correction type (individual or all three phases) • Bypass switch required or not • Input and output breakers required • Surge arrestor devices installed The regulator should be sized taking into account the transmitters worst case power consumption, all associated equipment to be ran from the AVR plus 25% headroom. This will ensure the AVR stays in regulation and not trip breakers under heavy loads and start up. For 3‐Phase applications, it is preferred that the AVR correct on the individual phases, this will provide phase to phase regulation and better dependability of the equipment. 1.14 RF Line Requirements The RF output connector on FAX transmitter depends on the model. The FAX5/10 has a 1‐5/8" EIA unflanged output connector. If the FAX5/10 is racked in a Harris Broadcast rack, the RF connector at the top will be a 1‐5/8" EIA flanged connector that includes a adapter to a unflanged connection. There is an optional adapter to allow for a 3‐1/8" EIA unflanged connection for models with 1‐5/8 EIA output. All transmitter models have a RF output impedance of 50 ohms unbalanced. There are two major factors in selecting the correct transmission line for the application, line loss and line power handling capability. Air dielectric lines tend to be more efficient but require pressurization. Foam dielectric lines tend to be less efficient (more loss). When considering the power handling capability requirement of the line, consider peak voltages not just the power of the transmitter. Also the environment to be installed in, extremely high heat will degrade the power handling ...
Page 37 FAX 5/10/20/30/40KW 1‐23 October 28, 2013 Figure 1-15 FAX 3-1/8" Cabinet Output Flanged Connection 888‐2720‐001 WARNING: Disconnect primary power prior to servicing. Copyright ©2013, Harris Broadcast...
Page 39: Section-2 Installation
FAX 5/10/20/30/40KW 2‐1 October 28, 2013 Section-2 Installation Introduction This section details the procedures for installation and the steps required for the initial turn‐on of the FAX series transmitters. All steps should be followed in order to ensure the installation and turn on process are completed properly. Please refer to the exciter manual for more detailed information about the model installed in the transmitter. Unpacking When the transmitter is delivered to the site, the shipment should be inspected and inventoried before installation is begun. Each transmitter shipment will be accompanied by a packing check‐list identifying which items are packed in the various crates or boxes. Be sure to locate and save this document when the shipment arrives. The contents of the shipment should be as indicated on the packing list. Carefully unpack the transmitter and perform a visual inspection to assure that no apparent damage was incurred during shipment. Retain the shipping materials until it has been determined that the unit has not been damaged. If the contents are incomplete, or if the unit is damaged electrically or mechanically, notify the carrier and Harris Broadcast immediately. Returns and Exchanges Damaged or undamaged equipment should not be returned unless written approval and a Return Authorization is received from Harris Broadcast. Special shipping instructions and coding will be provided to assure proper handling. Complete details regarding circumstances and reasons for return are to be included in the request for return. Custom equipment or special‐order equipment is not returnable. In those instances where return or exchange of equipment is at the request of the customer, or convenience of the customer, a restocking fee will be charged. All returns must be sent freight prepaid and properly packed and insured by the customer. When communicating with Harris Broadcast, specify the Harris Broadcast order number or invoice number and serial number. Transmitter Documentation Prior to installation, this technical manual, the factory test data, and the accompanying drawing package should be studied carefully to obtain a thorough understanding of the principles of operation, circuits, and nomenclature used in the Flexiva FAX series transmitter. This will facilitate proper installation and commissioning. Store the documentation, including the factory test data, in a secure location for future reference. Note The information contained in the drawing package should be considered the most accurate in the case of a discrepancy.
Page 40: Personnel And Equipment Protection
2‐2 Section-2 Installation October 28, 2013 Before continuing please be sure that the site AC mains and cooling are adequate for the installation of your transmitter. Pre‐Installation information and data for each FAX model can be found in Section 1 of this manual. Personnel and Equipment Protection All electrical equipment can pose a safety hazard if not operated properly or if proper safety precautions are not taken. Every care should be taken during the site planning process to maximize personnel protection on site, both during the installation and once the transmitter has been placed into operation. Below is a collection of recommendations to follow to enhance personnel safety on site. • Post first aid procedures in a visible location. • Maintain a well‐stocked first aid kit in a visible location. • Post emergency phone numbers next to all site telephones. • Install fire extinguishers appropriate for extinguishing electrical fires. • Maintain a file of Material Safety Data Sheets (MSDS) for any hazardous chemicals on premises. • Restrict site access to unauthorized personnel and post applicable high voltage and non‐ionizing radiation hazard warnings. • Secure all equipment racks to prevent tip over hazards, especially at sites prone to seismic activity. • When mounting Flexiva transmitting equipment in a pre‐existing rack, be sure to mount equipment low enough in relation to rack center of gravity to prevent a tip over hazard. • Install mains safety disconnects (pull box or emergency off button) in sight of transmitter so as to permit visual verification of mains status at all times while performing maintenance. • Provide a means to lock out AC mains while performing maintenance to prevent inadvertent electrocution by a second party. 2.5.1 Safety Circuits The Flexiva FAX series transmitter has provisions for the following safety connections, see Section 2.13 for further ...
Page 41: Installation
FAX 5/10/20/30/40KW 2‐3 October 28, 2013 Installation Note It should be noted that any remote control, status or analog meter connections be made only after the transmitter has been initially turned on and operation verified. This transmitter installation section provides instructions on proper cabinet placement, inter‐cabinet wiring where applicable, grounding, AC power connections, RF out connection, and static checks required before application of AC power. The later part of the installation process involves the initial turn‐on procedure and initial equipment checks to assure proper operation. Note All connections referred to in this installation procedure should be verified using the schematic diagrams supplied with the transmitter.
Page 42: Rack Mounting Fax5/10
2‐4 Section-2 Installation October 28, 2013 Figure 2-1 Slot Locations (FAX20 Power Block 1 Shown) Note Figure 2-1 is Power Block 1 in FAX20/30/40. The Multi-Unit Controller will not be installed in FAX5/10. 2.6.3 Rack Mounting FAX5/10 In some instances the FAX5/10 transmitter will ship without a mounting rack. It is the customer’s responsibility to properly support and mount the equipment in the racks. The FAX transmitter will fit in any 19" EIA compatible rack that has adequate space available. See the ECM sheets or the accompanying documentation package for dimensions.
Page 43: Equipment Ground
FAX 5/10/20/30/40KW 2‐5 October 28, 2013 Equipment Ground The FAX transmitter is equipped with a RF/Safety ground lug connection on the upper left rear panel, see Figure 2‐ 2. When shipped without a rack, this safety ground must be connected to either the ground bar/strap inside the rack or directly to the site ground system. A 2" wide copper ground strap is recommended. Figure 2-2 FAX RF/Safety Ground Connection When FAX transmitters are in a Harris Broadcast cabinet, there will already be a copper ground strap connected to the copper ground buss bar/strap that runs down the left side of the cabinet (when viewing from cabinet rear). The exciter will also be grounded to this buss bar as well. The rack mount cabinet buss bar/strap must be grounded to the site ground system. A minimum 2" wide copper ground strap is recommended. The strap should be attached to the site ground system at the bottom of the cabinet copper ground buss bar. Figure 2-3 Cabinet Ground Buss Bar/Strap Caution WHEN INSTALLING ANY ADDITIONAL EQUIPMENT IN THE TRANSMITTER RACK, BE SURE TO CONNECT A SEPARATE GROUND WIRE FROM EACH COMPONENT TO THE BUSS BAR.
Page 44: Exciter-Transmitter Interconnection
Figure 2-4 FAX Exciter Interface Note To run the FAX transmitter in FM+HD or HD only modes, a Harris Broadcast FlexStar or FAX Exciter and HD Exporter are required. Please refer to the HD Exporter and the Exciter manuals for proper inter- connection and setup.
Page 45: Installing A Non-Harris Broadcast Exciter
FAX 5/10/20/30/40KW 2‐7 October 28, 2013 Figure 2-5 RTAC RF Sample Input on back of Exciter. 2.8.1 Installing A Non-Harris Broadcast Exciter When an exciter is not supplied at the time of purchase, the customer is responsible for fashioning a cable to interface the exciter to the FAX transmitter. There are some requirements that the cable must comply to to ensure safety and proper operation. The exciter interface at the rear of the transmitter goes to the System Interface Board, see its schematic diagram for more information. Also refer to Section 5 of this manual for help in setting the dipswitches for exciter/transmitter interface. Warning ENSURE THAT THE EXCITER IS SETUP FOR A MAXIMUM OF 2 WATTS PRIOR TO CONNECTION TO THE FAX TRANSMITTER.
Page 46 2‐8 Section-2 Installation October 28, 2013 nal APC input this connection is not required and the Exciter Type must be set to CUST IPA(APC to internal IPA) in the FAX setup. If using CUST IPA dipswitch S1‐5 on PA Backplane board 1(top board) where the IPA plugs in must be set to ON. This passes the APC voltage to the IPA. • The transmitter will display forward power from the exciter based on a DC voltage from the exciter that is proportional to it RF output. If the exciter does not have this analog output that transmitter will still operate but will not display exciter forward power. For dual exciters automatic switchover is done by using this volt‐ age, if not available the exciter will be forced to the other exciter in auto mode. See Section 5 of this manual for exciter power calibration procedure. • Ensure the exciter RF power output is set to approximately 2 Watts for safe initial turn on of the transmitter. Refer to Section 5 of this manual and the exciter manual for proper dipswitch settings internal to the FAX transmitter. Table 2-1 EXCITER INTERFACE (J2,J3 D-sub 15, amplifier rear) Designation Remarks Type Signal ground EXCITER FORWARD Exciter forward power reading 0‐4 Input POWER SAMPLE VDC for 0 ‐ 100% power out of the exciter RS 485 + Used for FAX exciter only Bi‐Directional FM_ON_STATUS Exciter grounds pin to tell PA that ...
Page 47: Rf Connections
FAX 5/10/20/30/40KW 2‐9 October 28, 2013 Table 2-1 EXCITER INTERFACE (J2,J3 D-sub 15, amplifier rear) Designation Remarks Type RS 485 ‐ Used for FAX exciter only Bi‐Directional No Connection Spare Exciter A Active Used by main/alt exciter switcher to Output inform web remote which exciter is selected. logic high = exciter B selected logic low = exciter A selected No Connection Spare EXCITER_READY Pin is High when Exciter is Not Ready Input RF Connections Prior to operation of the transmitter, the RF output must be connected to a known good test load or antenna. Connect the load/antenna using the correct size connector and transmission line for your model of transmitter. It is a good practice to use the minimum number of elbows to get the best performance from your transmitting system. If there is a patch panel or an RF Switch for a load/antenna, an interlock connection is required to J1 of the FAX. See ...
Page 48: Ac Connection Without Distribution Panel
AN EXTERNAL CIRCUIT PROTECTION DEVICE (BREAKER OR FUSE) IS REQUIRED FOR EACH AC LINE INPUT. THIS IS PROVIDED BY THE CUSTOMER IN ACCORDANCE WITH THE AC INTERCONNECT DRAWING OR BY HARRIS BROADCAST IF AN IN-RACK AC DISTRIBU- TION CHASSIS IS PURCHASED (OPTIONAL). IN THE LATTER CASE, AN EXTERNAL CIRCUIT...
Page 49 WHEN MODULAR MAINS DISCONNECT PLUGS ARE IN USE. NEVER ALLOW THE NEUTRAL TO BE BROKEN BEFORE THE INDIVIDUAL LINE CONNECTIONS. THIS RECOMMENDATION HOLDS FOR ALL SINGLE-PHASE EQUIPMENT WITH A 380- 415V WYE-DERIVED FEED, NOT JUST THE HARRIS BROADCAST FAX TRANSMITTER. 888‐2720‐001 WARNING: Disconnect primary power prior to servicing.
Page 50 2‐12 Section-2 Installation October 28, 2013 Note It is not necessary to observe a certain phase rotation or even phase balance in three phase transmitters. Additionally, the amplifier chassis can operate indefinitely (at a reduced power) with one or two of the mains phases missing.
Page 51: Ac Connection With Distribution Panel
The AC Distribution panel will not have a Neutral bar. If the Neutral Bar is required to meet the electrical code in your area please contact Harris Broadcast Service to obtain a terminal barrier strip Qty-1 part number 614-0988-000.
Page 52 2‐14 Section-2 Installation October 28, 2013 • RF transmission line should be attached and connectors tightened to proper torque • Cooling system should be installed and running • J1 should have special connector attached to defeat the Interlock • Exciters should be connected and all connections tight • If transmitter is running a HD mode the Exporter should be connected to the exciter Exgine via IP connection. Refer to the exporter and exciter manuals for setup. Note If unit is a FAX5 and has dual exciters, Exciter A will operate in to the high power input and Exciter B will operate in to the internal IPA and will operate at a much lower power.
Page 53: User Remote Control Connection
FAX 5/10/20/30/40KW 2‐15 October 28, 2013 Front Panel "OUTPUT" status LED turns green There are no red LED’s on the front or inside any of the power blocks. Allow the transmitter to operate for 30 minutes to warm up. STEP 8 Inspect all transmission line for any localized heating. STEP 9 If an infrared temperature measurement device is available, check all AC STEP 10 connections and breakers for excess heating After 30 minutes of operation, verify that the PA meter readings are close to STEP 11 the factory test data. All the meter readings can be found under the "Status" menu button. See Section 3 of this manual for further details on menus and operation of the transmitter. Verify Spectrum for HD carriers and the RTAC is correcting the output signal STEP 12 and it meets the compliance mask. If RTAC is not correcting refer to the exciter manual for help. If transmitter is equipped with dual exciters, go to SETUP>>TX CONTROL on STEP 13 the LCD menu and switch to the backup exciter. Verify the transmitter operation. Once satisfactory performance of the transmitter has been verified the USER STEP 14 REMOTE can now be connected. See Section 2.13 for detailed information. If a Network connection is to be made for use with a remote computer or STEP 15 control go to Section 3 of this manual for setup information.
Page 54 2‐16 Section-2 Installation October 28, 2013 There is an optional Remote Control Breakout Board ‐ 901‐0218‐201GT ‐ Converts connections from dB‐25 to Screw terminals Figure 2-12 User Remote Inputs and Outputs Rev J and earlier boards Note If the unit in operation has a Rev J or older circuit board and external pull-up goes to a voltage higher than 5 VDC, remove F3 from the System Interface (FAX5/10) or Multi-Unit Interface (FAX20/30/40) board.
Page 55 FAX 5/10/20/30/40KW 2‐17 October 28, 2013 Figure 2-13 User Remote Inputs and Outputs Rev K and Later boards Table 2-3 REMOTE CONTROL (D-sub 25, amplifier rear) J1- Inputs Designation Remarks Type TX ON COMMAND Momentary. Input Ground pin to turn transmitter on. TX OFF COMMAND Momentary. Input Ground pin to turn transmitter off. This input can be configured to operate regardless of Remote enable/disable status. See ...
Page 56 2‐18 Section-2 Installation October 28, 2013 Table 2-3 REMOTE CONTROL (D-sub 25, amplifier rear) J1- Inputs RF MUTE Continuous Ground pin to unmute RF output Input When open, RF output is muted to zero power. This is defeatable by dip switch S2‐5 on System Interface Bd. Shipped from factory as Defeated. UPS LOW Power MODE Continuous Ground pin to put transmitter into Input UPS Power Mode (Default 1/4 power). Enabled regardless of Remote enable/disable status. See Section 5 to setup Power out in this mode. EQUIPMENT INTERLOCK Configurable Active Hi/Lo by S14‐1,2 on Sys Inf Input Bd; Continuous connection Hi/Low required to activate Interlock Enabled regardless of Remote enable/disable status. Transmitter return to operation once Interlock in OK state GROUND Ground; Can be used for Command Inputs and Status Outputs EXTERNAL INTERLOCK Continuous Ground to satisfy interlock loop Input When released, requires a manual TX ON ...
Page 57 FAX 5/10/20/30/40KW 2‐19 October 28, 2013 Table 2-4 REMOTE CONTROL (D-sub 25, amplifier rear) J1- Status and Metering Outputs PROG 4 FAULT Status output is programmable via GUI only. Hi ‐ Output OK; Low ‐ Fault FORWARD POWER 3.5VDC = 100% calibrated power, Linear scale External Metering Output REFLECTED POWER 3.5VDC = 1.5:1 VSWR; 1.3 VDC=1.3:1 VSWR External Metering Output PA VOLTAGE PA Drain Voltage 14.63 VDC/V output External Metering Output PA CURRENT Total PA Current 4.1 VDC = Max current (Model External Dependant) Metering...
Page 59: Section-3 Operation
FAX 5/10/20/30/40KW 3‐1 October 28, 2013 Section-3 Operation Introduction This section contains normal day‐to‐day operational procedures and information pertaining to the function of the Flexiva FAX 5/10/20/30/40 Transmitters. The information contained in this section assumes the transmitter has been installed correctly and is in proper working order. See Section 2 of this manual for installation and initial turn on steps. It is important that the operator be aware of normal transmitter operation and performance and note any changes or fault indications. Changes in operation may indicate a need for maintenance or corrective action before a more serious problem develops. Refer to the Factory Test Data (FTD) which includes meter readings, measured performance data, information and data measured with external equipment, and adjustments specifically for each transmitter’s operating frequency and power level. Controls and Indicators The following section identifies the location and function of all front‐of‐transmitter controls and indicators for operation of the FAX Transmitters. Remote Power ENABLE/DISABLE RAISE/ LOWER Navigation Buttons “Enter” is Black Circle ¼ VGA Display Status Menu Setup Menu ON / OFF Summary Button/LED...
Page 60 3‐2 Section-3 Operation October 28, 2013 Table 3-1 Front Panel Control Buttons Button Explanation STATUS Displays the Status Menu including the Event Log and meter readings POWER Displays model, forward/reflected power levels and system voltage and current readings SETUP Displays the setup menus on the LCD, includes configuration and calibration of the transmitter UP/DOWN/LEFT/RIGHT Used for LCD menu navigation. The up and down buttons are used to move the arrow cursor, which indicates the menu line that will be activated by pressing the black enter button. The left button is primarily used as a back button to return to a previous menu selection ENTER This is the black button in the center of the UP/DOWN/LEFT/RIGHT buttons. Used to select(highlight) or expand LCD menu items REMOTE ENABLE Allows remote control of the FAX (IP, SNMP and Parallel I/O); Disables Local control including front Ethernet port and LCD control/config REMOTE DISABLE Disables remote control of the FAX (IP, SNMP and Parallel I/O); Enables Local Control including front Ethernet port and LCD control/config POWER RAISE Raises the RF power output POWER LOWER Lowers the RF power output Turns Transmitter RF ON Turns Transmitter RF OFF WARNING: Disconnect primary power prior to servicing.
Page 61: Internal Controls And Indicators
FAX 5/10/20/30/40KW 3‐3 October 28, 2013 Table 3-2 Front Panel Status Indicators Status LEDs States Explanation EXCITER Green = OK Represents the status of the On‐air Exciter and Auto‐Switching Amber/Yellow = Auto‐ relay Switched Red = Fault DRIVE CHAIN Green = OK Represents the status of all IPA’s in the transmitter and Auto‐ Amber/Yellow = Auto‐ Switching relay(s) Switched Red = Fault POWER AMP Green = OK Represents a summary status of the all PA Modules in the Red = Fault transmitter POWER SUPPLY Green = OK Represents a summary status of the Power Supplies in the Red = Fault transmitter OUTPUT Green = OK Represents the status of the RF Output system. When the ...
Page 62 3‐4 Section-3 Operation October 28, 2013 Figure 3-2 System Interface Board When the board is configured as a Power Block Controller (FAX20/30/40), none of the switches function.There are 6 LED status indicators on the board. With the exception of the “Remote Enable” LED, all the LED’s are active on both cards. In a FAX20/30/40 the “Remote Enable” LED is not active on the System Interface because it pertains to the overall transmitter not the specific power block. • SYSTEM ON: Illuminates when transmitter is ON • RF OUTPUT OK: Illuminates when RF Output is within 10% and no VSWR faults • REMOTE ENABLE: Illuminates when front panel Remote Enable button is pressed • DRV B ACTIVE: Illuminates when IPA “B” is activated. Off when IPA “A” activated. • RF MUTE: Illuminates when any RF Mute action occurs • BACKUP MODE: Illuminates RED when upper NORMAL/BACKUP switch selects BACKUP or when Micro fails Note If the IPA switch mode is set to AUTO, the manual DRV buttons still function. Figure 3-3 RF Switch Board Indicators Green LED (Left) ‐ Indicates RF Out of IPA into the splitter is at Normal level. This LED will turn OFF when the IPA ...
Page 63: Rf Sample And Rtac Ports
FAX 5/10/20/30/40KW 3‐5 October 28, 2013 Figure 3-4 Multi-Unit Interface Board FAX20/30/40 Only The Manual DRV A SELECT/DRV B SELECT buttons select the IPA path for all power blocks simultaneously. When the transmitter is in Normal control mode and an IPA fault occurs the switching will happen automatically. Backup is a term used to describe one of the control modes for the FAX. If a fault should occur in the Micro Module or the Control/Display board, the transmitter will automatically go to BACKUP control mode, and the transmitter will continue operation. This button forces the transmitter into the BACKUP control mode and allows for setting the power in this mode via the PWR SET pot next to the switch. This switch should only be used to set the power for BACKUP mode and otherwise remain in NORMAL. 3.3.1 RF Sample and RTAC Ports In the factory test data there is an entry labelled “Sample Port Coupling Factors”. These port locations are different depending on the model of transmitter. The last page of the factory test data lists the coupling factor of each port over frequency, this data is taken directly at the port with no cables attached. However the coupling factors noted on page three are for the frequency the transmitter was tested at only and take into account the cable loss to each port. For a FAX5/10 the RF Sample on the front door, which is indicated on the test data as “Front”, includes the loss of the splitter and cable. The Modulation Monitor on the rear panel is indicated as “Rear”, and includes the cable loss (no splitter in line) to it as well. For the FAX20/30/40 the RF Sample on the front door of each power block is a sample from the directional coupler in each power block and is not indicated on the test data. Refer to Figure 3‐3 above, the RF Sample port on the Multi‐Unit Panel inside power block one is the “Front” sample port indicated on the test data. This port comes from the transmitter directional coupler at the output which is a sample of the combined power. It includes the cable and splitter loss. For the FAX20/30/40 “Rear Sample port, this is J5 directly on the output directional coupler. The RTAC sample ports are located on the rear panel of Power Block 1 in all the FAX models. These samples are taken ...
Page 64: On/Off Operation
3‐6 Section-3 Operation October 28, 2013 Figure 3-5 Front Panel LCD Display Controller after Pressing ON 3.4.1 ON/OFF Operation To turn the transmitter ON from the front panel press the Green ON button. The following should occur: • Green ON button LED should illuminate • Power supply internal fans turn on • Fans on rear door of each power block should turn on • Exciter should un‐mute • RF should ramp up from 0 watts to TPO To turn the transmitter OFF from the front panel press the Red OFF button. The following should occur: • Red OFF button LED should illuminate • Power supply fans turn off • Fans on rear door of each power block should turn off • Exciter should mute • RF should ramp down from TPO to 0 watts 3.4.2 Power Raise/Lower Procedure...
Page 65: Lcd Navigation Tutorial
FAX 5/10/20/30/40KW 3‐7 October 28, 2013 Note Prior to August 2013 the software required that the Remote be “Enabled” for both front and rear Ethernet ports to be enabled for changes to be made. The Remote Enable LED can be RED or GREEN depending on a dipswitch setting on the Control/Display board.
Page 66 3‐8 Section-3 Operation October 28, 2013 Figure 3-6 LCD Screen Navigation In the SETUP menu there are several selections that can be made to configure, control and calibrate the transmitter. When navigating the SETUP menu the following steps can be used as an example how to make changes. In this example the Date will be changed. After pressing the SETUP button, scroll down to SYSTEM SETUP, press ENTER and the display should be as shown in Figure 3‐7 left screen. Figure 3-7 Date Setup The DATE screen will display the current date (month/day/year) information. If you press the ENTER button when the arrow is next to the selection you wish to change, the selection will be highlighted like the APPLY DATE in Figure 3‐7 right screen. To change the MONTH, ensure arrow is next to MONTH highlight it by pressing ENTER, use the up or down buttons to correct the displayed month and then press ENTER. However, to actually change the date in memory the APPLY DATE must be pressed. Use the UP or DOWN buttons until the arrow is next to DATE, press the ENTER button to highlight DATE, the ENTER button must be pressed again with the selection highlighted, once the highlight clears the date is saved. In some cases such as DUAL EXCITERS setup, it will be required to change from NO to YES. The screen shows “DUAL EXCITERS: YES” as in Figure 3‐8, in this case when the screen is highlighted the UP/DOWN buttons (either will work) can change the entry from YES to NO and then press the ENTER button to save the change. The menu tree for the POWER, STATUS and SETUP menus follow this section. Only the SETUP allows the user to make changes, POWER and STATUS are view only menus. Following the example above will allow the user to get comfortable with navigation of the menus. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 67: Power Button Menu
FAX 5/10/20/30/40KW 3‐9 October 28, 2013 Figure 3-8 YES/NO Change Example Power Button Menu The Power Button light illuminates automatically whenever the transmitter AC is turned on, this is the default home screen. It provides the operator very basic information about how the transmitter is operating. To view this screen whenever another screen is being displayed, simply press the POWER button. The POWER menu is information only, no configuration settings are available in this menu. Figure 3-9 POWER Menu Figure 3‐10 Shows all of the information available when the POWER button is pressed. These readings are all system readings. The PA AMPS is the total DC current being drawn form all of the power supplies in the system. POWER FWD:10.0 KW RFLD: 0W PA VOLTS:43.8V PA AMPS:408A TX FAULTS:OK EXC ON AIR:A PWR MODE:NORM Figure 3-10 POWER Button Menu Tree Status Button Menus Pressing the Status button will bring up the screen shown in Figure 3‐11. This allows the user access to specific ...
Page 68 3‐10 Section-3 Operation October 28, 2013 Figure 3-11 STATUS menu Figure 3‐12 and Figure 3‐13 are the menu tree for the STATUS button. Details of each sub‐menu are describe in this section. Any readings given in this manual should not be assumed correct for your transmitter. The Factory Test Data should be consulted for correct readings for the transmitter being operated. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 69 FAX 5/10/20/30/40KW 3‐11 October 28, 2013 Status Log___________ F/W,DESC,OCCUR TIME Exciter_____________EXC ON AIR:A EXC SW MODE:AUTO EXC AUTO SW:READY MODULATION FM MODULATION:FM EXCITER A:OK EXCITER B:OK EXC A PWR:2119mW EXC B PWR:0mW Audio Present APC V:2.84 Audio Status Modulator Submenus are for FAX Exciter ONLY Modulator>>_____________________________ Exciter Status See FAX Exciter Manual...
Page 70: Status >Log Menu
3‐12 Section-3 Operation October 28, 2013 Status Continued Power Supplies_____ PA BLOCK 1>>___________________________________________________ PS SUMMARY:OK AC MAINS:OK PA BLOCK 2>>___________ PS SUMMARY:OK PB AVG V:44.2V AC MAINS:OK PB TOTAL I:192.5A PB AVG V:44.2V PS METERS>>__________PB AVG V:44.2 PB TOTAL I:192.5A PS 1:OK PB TOTAL I:192.5A PS METERS>>_________ PB AVG V:44.2...
Page 71: Status>Exciter Menu
FAX 5/10/20/30/40KW 3‐13 October 28, 2013 9/28 13:10 = Time and date fault occurred or cleared If this fault was highlighted it would be an active fault 3.7.2 STATUS>EXCITER Menu The Exciter submenu displays the status, switching mode and meter readings for the Exciter(s) installed in the FAX transmitter. Table 3-3 STATUS>EXCITER Menu Description Menu Description EXC ON AIR:A Displays On‐Air Exciter A or B EXC SW MODE:AUTO Displays dual exciter switching mode: Auto on Manual EXC ATUTO SW:READY Displays the exciter Switchover relay status:Ready or Tripped; If Tripped manual reset required by pressing ON button MODULATION:FM Displays Exciter Mode:FM, HD,FM+HD,SLC; Also displayed on LCD HOME screen; Mode set by exciter which changes the transmitter operating mode between Class C and Class EXCITER A:OK Displays status of Exciter A Fault Line: OK,Fault EXCITER B:OK Displays status of Exciter B Fault Line: OK,Fault EXC A PWR:2119mW Displays Exciter A power level in milliwatts; Calibrated to DC voltage from exciter interface. EXC B PWR:2119mW Displays Exciter B power level in milliwatts;Calibrated to DC voltage from exciter interface. APC V:2.84 Displays APC voltage from FAX to Exciters (Typically about 0.1 Volts less at exciter)Range ...
Page 72: Status>Power Amp Menu
3‐14 Section-3 Operation October 28, 2013 STATUS>Drive Chain Menu Description Menu Description PWR BLK 1 IPA>> Displays Fault status and meter readings for IPA in power block 1 PWR BLK 2 IPA>> Displays Fault status and meter readings for IPA in power block 2 (If used) PWR BLK 3 IPA>> Displays Fault status and meter readings for IPA in power block 3 (If used) PWR BLK 4 IPA>> Displays Fault status and meter readings for IPA in power block 4 (If used) 3.7.4 STATUS>POWER AMP Menu The Power Amp submenu displays the status and meter readings for the power amplifier modules in each power block. Included in the meter readings is the Summary Fault, PA voltage and total PA DC Current for the power block. The readings for each module (except for the three power block readings) are repeated for all seven power amplifier modules in the power block. There can be up to four power blocks in the transmitter. Table 3-4 STATUS>POWER AMP Menu Description Menu Field Description PA BLOCK 1 PA SUMMARY:OK Displays PA Summary Fault: OK or Fault; Faults are OVR TEMP, OVR CUR, OVR DRV,VSWR,MOD PRESENT,UDR VOLTS for all modules. PB AVG V:44.2V Displays Average DC volts for the entire power block PB TOTAL I:192.3A Displays Total DC current drawn from the power supplies by the entire ...
Page 73 FAX 5/10/20/30/40KW 3‐15 October 28, 2013 Table 3-5 STATUS>OUTPUT Menu Description Menu Field Description OUTPUT:OK OK, Warning or Fault FORWARD:9901W Displays Transmitter Forward Power REFLECTED:0W Displays Transmitter Reflected Power VSWR:OK OK or FAULT; Trips at 1.5:1 VSWR FLDBK:OK OK or FAULT Foldback point is user settable via GUI between 1.3:1 and 1.5:1 PWR LIMIT:OK OK or FAULT; Power limit is 110% of calibrated power; set in hardware REJ LEVEL:0% Displays Reject load power in percent; 100% would be with one power block off or 1 cabinet shut off REJ LOAD:OK OK or FAULT; Faults are RF, Fan or Temp PA BLOCK 1 FORWARD:9901W Displays Power Block Forward Power REFLECTED:0W Displays Power Block Reflected Power VSWR:OK OK or FAULT; Power block Trips at slightly higher than 1.5:1 for power block VSWR FLDBK:OK OK or FAULT; Set in code to slightly higher than 1.5:1 for power ...
Page 74: Status>Power Supplies Menu
3‐16 Section-3 Operation October 28, 2013 3.7.6 STATUS>POWER SUPPLIES Menu The POWER SUPPLIES submenu displays information on the power supplies in each power block. The menu displays both status and meter reading for each individual supply. The Power Supply fault has three fault outputs to the transmitter, these however are tied together on the Power Supply Interface Board and reported as a generic fault. To obtain the actual fault in the power supply, refer to the troubleshooting section of this manual. Table 3-6 STATUS>POWER SUPPLIES Menu Description Menu Field Description PA BLOCK 1 PS SUMMARY:OK OK or Fault; Any supply is faulted this will be Fault AC MAINS:OK AC Mains Undervoltage Monitor: OK or Fault; below approximately 190 VAC is Fault PB AVG V:44.2V Average power supply DC voltage in PB x PB AVG I:192.5A Total DC current drawn from all 7 power supplies combined in PB PS METERS PS Meters for Voltage and Current PS1:OK OK or Fault; generic power supply fault Rectifier, Power or Temp PS2:OK OK or Fault; generic power supply fault Rectifier, Power or Temp PS3:OK OK or Fault; generic power supply fault Rectifier, Power or Temp PS4:OK OK or Fault; generic power supply fault Rectifier, Power or Temp...
Page 75: Status>>Sw Revisions
FAX 5/10/20/30/40KW 3‐17 October 28, 2013 • Airflow ‐ Measured on PS Interface board . Table 3-7 STATUS>SYSTEM Menu Description Menu Field Description SYS SUM:OK System summary OK, Warning or Fault APC STATUS:ON APC Status ON or OFF APC MODE:DRIVE APC Mode DRIVE(APC to Exciters) or IPA(APC to the IPA) CTRL MODE:NORM Control Mode NORM or Backup (Only way this can be backup is Control switch S1 on System Interface bd is set to BACKUP) PWR MODE:NORM PWR Mode Norm, LOW or UPS INTERLOCK:OK Interlock status OK or FLT(J1‐24 User Interface) RF MUTE:NO RF Mute NO or MUTED REMOTE MUTE:NO Remote Mute NO or MUTED EQUIP INTLK:OK Equipment Interlock OK or FLT(J1‐9 User Interface) SYSTEM METERS APC REF:3.50V APC Reference set by micro during system calibration APC OUT:3.53V APC output voltage, changes with Raise/Lower Power PWR LIMIT:0.00V Power Limit 0 V until the 110% power limit is reached or ...
Page 76: Set-Up Button
3‐18 Section-3 Operation October 28, 2013 SET-UP Button Pressing the SET‐UP button brings up a listing all of the features the operator can control and customize in the transmitter. This sub menu also allows for all calibrations for the entire transmitter. Figure 3‐15 and Figure 3‐16 is the SETUP Menu Tree. Note When making changes to the transmitter via the LCD Remote must be Disabled. Figure 3-14 SETUP Menu When used with a FAX exciter the some exciter configure menus are available on the transmitter lcd. If these menus are blank or do not match the setup menu fields on the exciter lcd then a communications problem exists. This communication between controllers is via RS485. Ensure the transmitter interface cable is seated properly and the RS485 baud rates match in both exciter and transmitter SETUP>>NETWORK SETUP menus. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 77 FAX 5/10/20/30/40KW 3‐19 October 28, 2013 SETUP TX CONTROL_______PWR MODE SET:NORM EXC ON AIR:A IPA ON AIR:A EXC SW MODE:AUTO IPA SW MODE:AUTO APC:ON SYSTEM SETUP_____ ID:HARRIS TRAINING DATE:06/05/2012 TIME:9:39:27AM TX CONFIGURATION_TX MODEL:FAX20 FREQ:98.10 MHz PWR:20000Watts DUAL EXCITERS:YES INTERNAL IPA:YES AC INPUT:3D TX CALIBRATE______TX POWER CAL___________MODULATION:FM TX TPO:10000W...
Page 78: Transmitter Setup/Configuration And Calibration
3‐20 Section-3 Operation October 28, 2013 SETUP Continued EXCITER SETUP______EXC SELECTED:A EXC TYPE:FLEXSTAR EXC SLC SEL:FM EXC PWR CAL____________MODULATION:FM EXC PWR: 1990mV EPWR CAL: 2260mW CALIBRATE:NO SET THRESHOLD: NO EXC CONFIG>> EXC CONFIG Submenus are for FAX Exciter ONLY See FAX Exciter Manual NETWORK SETUP____ REAR MAC ADDRESS: 00 00 00 00 00 00 REAR MODE:...
Page 79: Setup>System Setup Menu
FAX 5/10/20/30/40KW 3‐21 October 28, 2013 Note 2 ‐ If the Exciter and IPA switch modes are set to Auto, the transmitter will still allow the user to manually force either to the off‐air IPA or exciter. However, when the switch mode is set to Manual, the IPA and exciter cannot be automatically switched. Ensure these are set to AUTO at all times unless performing maintenance. In the case of single exciter operation the Exciter switch mode is ignored. Note 3 ‐ The APC should always be left to ON. If this is set to OFF, the transmitter power will not be controlled by APC and TPO will not be maintained to ±0.25 dB. Under certain fault conditions the transmitter controller will shut the APC off. 3.9.2 SETUP>SYSTEM SETUP Menu The ID must be set using the Remote GUI. See Section 3.10 for details of how to connect and navigate the Remote GUI (Station Name).The ID can be up to 20 characters long before being cutoff on the LCD screen. The DATE and TIME menus will allow for them to be changed/updated. The date is entered in mm dd yyyy format. The Month automatically becomes the first selection. The time is entered as a 24 hour clock however, after entering the time is displayed as a 12 hour clock. For example, to enter a time of 3:00 PM, enter 15 for hours. 3.9.3 SETUP>TX CONFIGURATION Table 3-9 SETUP>TX CONFIGURATION Menu Menu Description TX MODEL FAX5/10/20/30/40 FREQ Sets frequency (See Note below) Sets the calibration of the bargraph on the LCD Home Screen; once forward is set the reflected will be set to 1.5:1 VSWR based on forward power DUAL EXCITERS YES for 2 Exciters or NO for Single Exciter INTERNAL IPA Yes for Internal IPA;NO for IPA BYPASS; Always IPA AC INPUT...
Page 80: Setup>Tx Calibrate>Power Supply Set
3‐22 Section-3 Operation October 28, 2013 Table 3-10 SETUP>TX CALIBRATE>TX POWER CAL Menu Description MODULATION Transmitter mode to calibrate power in;FM,FM+HD,HD; Set by exciter TX TPO RF Power to calibrate the transmitter at (TPO) CALIBRATE Calibrate YES or NO 3.9.6 SETUP>TX CALIBRATE>POWER SUPPLY SET There is a power supply setpoint stored for each of the Modulation modes, FM,FM+HD and HD. If the transmitter is setup to run in more than one mode the supply voltage must be set for each mode that will be used. All supplies in all of the power blocks will be set to this voltage. Warning THE TRANSMITTER RUNS MOST EFFICIENT AT LOWER SUPPLY VOLTAGES, HOWEVER THE TRANSMITTER CAN FAULT UNDER CERTAIN CONDITIONS (FREQUENCY, QUALITY OF LOAD, ETC) WHEN THE POWER SUPPLY VOLTAGE IS SET TOO LOW.
Page 81: Setup>Tx Calibrate>Pwr Block Cal
FAX 5/10/20/30/40KW 3‐23 October 28, 2013 Table 3-12 SETUP>TX CALIBRATE>AIRFLOW SET Menu SubMenu Description PB1 AIRFLOW AIRFLOW Airflow Voltage to ADC (Display Only) AIRFLOW CAL % of airflow currently being measured by transmitter SET PB1 100% YES or NO;To set airflow the transmitter fans should be running full speed which is 100% airflow. Note Under normal conditions the airflow % typically will be between 75 and 90 %. 3.9.8 SETUP>TX CALIBRATE>PWR BLOCK CAL This procedure is not in the FAX5/10 menu since there is only one power block and it is calibrated using the TX PWR ...
Page 82: Setup>Tx Calibrate>Rej Load Cal
3‐24 Section-3 Operation October 28, 2013 3.9.9 SETUP>TX CALIBRATE>REJ LOAD CAL Reject load calibration will only be in FAX20/30/40 models. It is used to calibrate the power into the power block combiner reject load (6 kW) and the cabinet combiner reject load (12 kW). There will be multiple Reject Loads in the FAX30/40 models. See Section 5 of this manual for detailed Reject Load calibration procedure. Table 3-14 SETUP>TX CALIBRATE>REJ LOAD CAL Menu Description REJ LEVEL 0%;Power that is currently input to reject load (Display Only) REJ SENSE 275 mV; Voltage from reject load detector that is on Fan Control Board (Display Only) SET SYS 100% YES or NO 3.9.10 SETUP>TX CALIBRATE>CAL RESTORE Used to restore last calibration stored in memory. Only one is stored. If a calibration is completed, ie forward or reflected power, and it is not correct restore will not correct the problem. Calibration will be required again. Table 3-15 SETUP>TX CALIBRATE>CAL RESTORE Menu Description MODULATION Mode transmitter is in, FM, FM+HD or HD...
Page 83: Setup>Network Setup
FAX 5/10/20/30/40KW 3‐25 October 28, 2013 Table 3-16 SETUP>EXCITER SETUP Menu Submenu Description EPWR CAL 2260mW: Power to cal at, should match EXC PWR above CALIBRATE YES OF NO; See Note 5 SET THRESHOLD YES or NO; See note 6 Note 1 ‐ Selecting Exciter A or B in this menu does not change the on‐air exciter. This allows for setup up of the exciter that is currently on‐air, not for calibrating the off‐air exciter. Ensure that the correct exciter is selected in this menu. Note 2 ‐ Exciter type must match the exciter model for the exciter selected. For Harris Broadcast products, the list is filled with models currently available. For non‐Harris Broadcast exciters, select either CUST DRV or CUST IPA. CUST DRV is for non‐Harris Broadcast exciters that have an external APC input that can accept 0‐4.75 VDC. The exciter must have a fast enough APC response time to allow the exciter to vary its output power with respect to this voltage. The transmitter will increase this APC voltage when it requires more drive and decrease this voltage when it requires less drive. When using CUST DRV, the IPA within the FAX is set for maximum gain. If trying to run in the FM+HD or HD modes, this setting is required. CUST IPA is for non‐Harris Broadcast exciters that do not have an external APC input. In this mode, the exciter will put out a fixed drive using its internal APC and the APC from the transmitter will drive the FAX IPA. This mode cannot be used for any HD modes. If using CUST IPA dipswitch S1‐5 on PA Backplane board 1(top board) where the IPA plugs in must be set to ON. This passes the APC voltage to the IPA. Note 3 ‐ EXC SLC SEL is used only for Split Level Combined systems. This setting will depend on the mode of the FAX in SLC operation, NA for non‐SLC applications. Note 4 ‐ The exciter voltage will be set bu the scaling in the exciter. In Harris Broadcast exciters it is typically set to 4 VDC=x Watts. This voltage should be set as close as possible to 2000 mV at TPO when dual exciters are used. Note 5 ‐ Exciter calibration must be completed for each mode of operation that will be used by the transmitter. Note that the exciter calibration is in milliwatts not watts. Most Harris Broadcast exciters display in Watts. Note 6 ‐ The threshold setup is for dual exciter systems only and sets the point were changeover occurs. The actual ...
Page 84: Setup>Display Mode
3‐26 Section-3 Operation October 28, 2013 Table 3-17 SETUP>NETWORK SETUP Menu Description REAR MAC 00‐00‐00‐00‐00‐00; Display only ADDRESS REAR MODE STATIC or DHCP REAR IP ADDRESS 192.168.1.10 REAR GATEWAY 255.255.255.0 REAR SUBNET 192.168.1.1 MASK FRONT MAC 00‐00‐00‐00‐00‐00; Display only;See Note 1 ADDRESS FRONT IP ADDRESS 192.168.117.88; Display only RS485 BAUD RATE 115200 or 312500; when used with FAX Exciter ONLY, must match exciter Note 1 ‐ The front panel Ethernet port is setup as a DHCP server and a LAN should NOT be connected to this port. This port is setup for local test and monitoring and the default IP address is factory set to 192.168.117.88. It will automatically assign the computer an IP address on its subnet. To make any changes to the setup via the front Ethernet port, REMOTE must be disabled. If a remote control connection is to be made via IP, the rear Ethernet port should be used for this purpose. Using the SETUP>NETWORK SETUP menu, the rear Ethernet port parameters can be changed. These parameters include IP address, Subnet Mask, Default Gateway and Mode. To access the GUI a simple web browser can be used. To login and navigate the Remote GUI see 3.10 Remote Graphical User Interface (GUI) of this manual. 3.9.13 SETUP>DISPLAY MODE Display mode can be either EXPERT or NOVICE. Setting Display Mode to Novice locks out the ability to ...
Page 85 FAX 5/10/20/30/40KW 3‐27 October 28, 2013 Figure 3-17 Remote GUI Login Screen Note Depending on the version of software the factory default LOGIN’s and PASSWORD’s may be different. Beginning in August 2013 these were changed. See below for more details. Old passwords will be retained when upgrading.
Page 86: Gui Home Screen
3‐28 Section-3 Operation October 28, 2013 Figure 3-18 Administration login Screen 3.10.1 GUI HOME SCREEN After the user has correctly entered one of the two Engineer login/password combinations the GUI will open at the FAX Home screen shown in Figure 3‐19. All of the configuration settings available are under the SYSTEM button on the home screen. Each of these menus will be described in the following sections. The other buttons are for control and monitoring, these are the same parameters that were discussed in the LCD menu tree Sections above. It is best for the users to navigate through these to get familiar where to find information about each section of the transmitter. Figure 3-19 GUI Home Screen The buttons on the right side of the home screen are for monitoring, setup and control. Each button will take the user to a submenu (s). No changes can be made and no control is available unless a valid Engineer login is used. If using the rear Ethernet port Remote must be enabled and if using the front Ethernet port Remote must be disabled. Transmitter ID ‐ The middle of the top bar shows the ID, this can be changed in the SYSTEM>SERVICE> menu. The Station ID can be up to 20 characters long. Transmitter Model ‐ Top bar on the right side shows the model of FAX 5/10/20/30/40. EVENT LOG ‐ Displays the Event Log FWD 100% Mark ‐ The vertical bar in the power bargraph reflected power display is 100% power based on the “Nominal Power (w) in the SYSTEM>SETUP Menu. This can also be changed in the SETUP menu on the LCD. This is not necessarily the power the transmitter was calibrated at. RFLD 100% Mark ‐ The vertical bar in the power bargraph display for reflected power is 100% power based 1.5:1 VSWR of the calibrated power. Mode ‐ shows the current operating mode of the transmitter, FM, FM+HD,HD or SLC. Display Only. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 87: Event Log Menu
FAX 5/10/20/30/40KW 3‐29 October 28, 2013 Frequency ‐ Shows current operating frequency of the transmitter entered into the FAX. For FAX exciters this changes the exciter frequency via RS485. For all other exciters it is display only and to see current frequency the operator must refer to the exciter frequency. The icons in the middle of the screen are analogous to the buttons on the right side of the display. If one or more of the icons are red, that icon can be clicked on and the user can drill into the submenus to find a particular fault. The fault log can also be viewed under the SYSTEM menu by clicking the SYSTEM button and navigating to the fault log. The Primary Faults will turn Red when any of the events shown changes state. AC Mains ‐ Faults when the AC line voltage to the main power supplies drops below 190 VAC on any phase. External Interlock ‐ Turns red when the External Interlock on the Remote connector J1‐24 and J1‐25 are not closed. VSWR ‐ Faults at VSWR of 1.5:1 Exciter Trip ‐ Displays the status of the internal Exciter switchover relay. IPA Trip ‐ Displays the status of the internal IPA switchover relay. Foldback ‐ Warning at 1.3:1 VSWR (factory Default). This setting can be changed in the GUI SYSTEM>SERVICE Menu. The range is 1.3 to 1.5. 3.10.2 Event Log Menu Figure 3-20 GUI Fault/Event Log Screen The Fault/Event log in software revisions prior to Application code 24 was strictly a Fault log. The log is shown in Figure 3‐20. Faults are shown as active, in red, and cleared with date and time. To reset the log click on the Reset Log button. To display only Active Faults click on the Active Faults button. The first fault in Figure 3‐20 shows that PA4 was out in power block 1 (PB1). The fault occurred at 15:41:41 on 10/ 02/12. It was cleared at 14:41:42 on 10/02/12. The events can be filter by clicking on any of the letters in the [AC / FWIA]. A = Active Faults C = Cleared Faults F = Faults W = Warnings I = Information A = Action Clicking the floppy disk icon will open a new tab in the web browser, this can then be saved as a text file, html file or ...
Page 88: System>System Setup Menu
3‐30 Section-3 Operation October 28, 2013 3.10.3 System>System Setup Menu Figure 3-21 System Setup Screen Frequency ‐ Set in the LCD SETUP menu. Sets the exciter frequency when used with FAX exciter. All other exciters this is display only. Nominal Power ‐ Sets the 100% mark on Bargraph for forward power Number of Exciters ‐ Must be set to 2 for dual exciter mode. This will enable auto switching function Internal IPA ‐ Always set to YES (Future Need) AC Mains ‐ Display only, has no effect on transmitter operation VSWR Foldback ‐ Sets the foldback point between 1.3 and 1.5. Factory default setting is 1.3. This setting affects only the transmitter VSWR not each individual power block VSWR. The power blocks are set to foldback at 1.5:1 in FAX20/30/40. Fwd Pwr Warn Thresh (dB) ‐ If RF power out drops below this threshold a Warning will be generated and Bargraph will turn Yellow. This is based on calibrated power. Fwd Pwr Fault Thresh (dB) ‐ If RF power out drops below this threshold a Fault will be generated and Bargraph will turn Red. This is based on calibrated power. 3.10.4 System>System Setup>System Service Menu Figure 3-22 TIME Screen Station Name ‐ Up to 20 characters Model Number ‐ Set at factory Serial Number ‐ Set at the factory Feature Key ‐ Sets up the options that are installed in the exciter. Contact Harris Broadcast Service for details Date/Time ‐ Sets the clock in the transmitter. Disabled when NTP is enabled. See Section 3.10.8 for NTP Config.
Page 89: System>System Setup>System Config Menu
FAX 5/10/20/30/40KW 3‐31 October 28, 2013 3.10.5 System>System Setup>System Config Menu Figure 3-23 System Config Screen Programmable Output 1‐4 ‐ Allows for 4 Remote I/O outputs on J1 User Remote to be user configured. Drop down box shows available settings. Exciter Configuration ‐ Allows for selecting the exciter type for each exciter in service. Drop down box shows available settings. 3.10.6 System>System Setup>Network Menu The Network screen allows configuration of the rear Ethernet port. Note Be sure to click Save before exiting screen or changes will be lost. Save will appear once changes are made.
Page 90: System>System Setup>Network>Snmp Menu
3‐32 Section-3 Operation October 28, 2013 3.10.7 System>System Setup>Network>SNMP Menu The Harris Broadcast transmitter family supports monitoring and alarming functionality via SNMP (Simple Network Management Protocol). Basic control of the equipment is possible after activation in the equipment. SNMP versions V1 and V2c are implemented. Figure 3-25 SNMP Screen MIBs ‐ Base MIB is Standard Harris Broadcast Transmitter MIB. IRT MIB is extended MIB, with functions for Dual Exciters. Check box to enable MIB.Un‐checked disables MIB. Port ‐ Default is 161 (range is 161,162,49152‐65535) RD Community ‐ Read Community Private or Public; Default set to Public RW Community ‐ Write Community Private or Public; Default set to Private SNMP Version ‐ FAX allows for version 1 or 2c only Trap 1‐3 ‐ IP address of SNMP trap receiver. Port 162 is default trap port, not changeable. Community Public or Private. The Harris Broadcast MIB’s are usable in all NMS (Network Management Systems) and is provided in text‐format. The advantage of this monitoring system is, that there is no difference between the monitoring of various Harris Broadcast equipment. Once the MIB is integrated into the NMS, all different devices can be monitored via the central station. The Harris Broadcast MIB files, Base and IRT, for use with SNMP connectivity are available on the Harris Broadcast Customer Portal at www.ecustomer.broadcast.harris.com (registration required) 3.10.8 System>System Setup>Network>NTP Menu Note For NTP to work a connection to the Internet is required. Allows for time and date setup in the FAX transmitter via NTP, this is used for accurate time/date in the Event Log ...
Page 91: System>System Setup>Network>Isp Menu
FAX 5/10/20/30/40KW 3‐33 October 28, 2013 Figure 3-26 UTC Time Setup If using the UTC setting for more accurate time and date, an IP address of a UTC time server must be entered. A list of time server IP addresses can be obtained from NIST. NTP ‐ Enabled or Disabled NTP Server ‐ IP Address of one of the NTP Time servers throughout the world. Update Interval ‐ Transmitter will update Time via NTP per this setting. Range 2 ‐ 1000 minutes. UTC OFFSET Hrs ‐ Enter an offset in hours that your location is from Greenwich Mean Time. User must take into consideration daylight savings time if applicable. UTC OFFSET Min ‐ Enter an offset in Minutes that your location is from Greenwich Mean Time. User must take into consideration daylight savings time if applicable. 3.10.9 SYSTEM>System Setup>Network>ISP Menu Figure 3-27 ISP Screen The ISP menu is used for uploading software the FAX and also to save a configuration file from the transmitter. This configuration file contains all of the user settings as well as calibration data. It is a good practice to save a configuration file when installation of the transmitter is complete as well as when any configuration or calibration changes have been made. See Section 5 of the manual for uploading software and saving configuration procedures. Note The preferred method of uploading software to the FAX is using the ISP external to the GUI. The external ISP menu can be obtained by typing in the IP address as shown (front panel): 192.168.117.88/isp.
Page 93: Section-4 Theory
FAX 5/10/20/30/40KW 4‐1 October 28, 2013 Section-4 Theory FAX Transmitter Configurations The following theory of operation is intended to provide a general overall knowledge of how the FAX high power series (5 kW through 40 kW) of transmitters work. The FAX series of transmitters can be operated in any one of three modes, which are: • The analog FM mode, with the PA modules operated class C mode to maximize efficiency. • The multiplex mode where analog FM and digital (HD) RF signals are both amplified in the same power ampli‐ fiers. For this mode, the PA modules are operated class AB, because digital HD requires linear amplifiers. • Digital HD mode only. For this mode, the PA modules are operated class AB, because digital HD requires linear amplifiers. The 10 kW FAX transmitter is the basic building block for all other high power FAX transmitters. The FAX10 does not contain an integrated exciter at this time and requires an exciter external to the transmitter chassis. All FAX transmitters have provisions for dual exciters with internal RF switching. All of the current Harris Broadcast FM exciters can be used or the FAX is setup to allow another manufacturers exciter to be used. The 5 kW FAX transmitter has the identical hardware of the FAX10, except there are four less PA Modules and three less PS Modules. The 5 kW exciter setup is slightly different than the 10 kW and will be explained in the 5 kW section. A 20 kW FAX transmitter consists of a 10 kW transmitter and a 10kW Power Block combined. The 10kW transmitter is referred to as the primary power block or power block 1 because it contains the front panel LCD Display and Multi‐unit Interface that controls the overall transmitter. The FAX20 is housed in a single cabinet. A 30 kW FAX transmitter consists of a 10 kW transmitter and two 10 kW Power Blocks combined. The FAX30 is housed in two cabinets with a cabinet combiner that combines them. A 40 kW FAX transmitter consists of a 10 kW transmitter and three 10kW Power Blocks combined. The FAX40 is housed in 2 cabinets like the FAX30 4.1.1 10kW RF Block Diagram Description Figure 4‐1 shows the RF block diagram portion of a FAX 10 kW transmitter. It has seven PA modules and one IPA ...
Page 94 4‐2 Section-4 Theory October 28, 2013 Referring to Figure 4‐1, the output of the RF Switch board feeds a 2‐way Wilkinson splitter. The outputs of the 2‐ way splitter in turn feed two 7‐way Wilkinson splitters. This divides the IPA output by 14 equal signals to feed each of the 14 FETs on 7 PA modules. The RF output from each of the 14 FETs is then fed to the 14‐way Wilkinson combiner. The 14‐way combiner also houses a low pass filter to remove any harmonics from the amplifiers. Wilkinson splitters were used to provide better isolation, lower loss and 0 degrees phase shift. This phase becomes important when we discuss the combining of the power blocks in the FAX20/30/40. The output of the LPF then goes through a 6‐port directional coupler to a 1‐5/8" EIA Unflanged output on the rear of the transmitter.The ports on the directional coupler feed the controller RF sample for APC and VSWR detection. There are also ports for modulation monitoring and the RTAC signals for the Flexstar Exciter Pre‐Correction when the transmitter is running in Class AB mode. IPA RF Switch Module Exciter A RF Input IPA Module Exciter B RF Input Exciter Switch PA Backplane Relay, on System IPA RF Output to Interface Board, PA System 2-Way PA Module...
Page 95: Fax5 Rf Block Diagram
FAX 5/10/20/30/40KW 4‐3 October 28, 2013 PA BackPlane IPA RF Level Rear To Sys Inf Panel RF Switch Bd Exc A To 14-Way Splitter Exc B RF Switch Bd System Interface Board Module IPA RF Level Detected on RF Switch board, it is DC voltage used for IPA RF Exciter power displayed Fault and switching...
Page 96: Fax20 Rf Block Diagram
4‐4 Section-4 Theory October 28, 2013 PA BackPlane IPA RF Level High Power Exciter Rear To Sys Inf Panel RF Switch Bd Exc A To 7-Way Splitter Exc B RF Switch Bd Low Power IPA/PA0 Exciter Module IPA RF Level Detected on RF Switch board, it is DC IPA/PA0 Module voltage used for IPA RF...
Page 97: Fax30 Rf Block Diagram
FAX 5/10/20/30/40KW 4‐5 October 28, 2013 4.1.4 FAX30 RF Block Diagram The FAX30 contains three 10 kW power blocks in 2 cabinets. One power block contains the Micro Module controller, the other power blocks have only a LED Status board. Figure 4‐5 is a block diagram of the RF of the FAX30. 3 dB -4.77 dB 10 kW -90° 20 kW -90° -90° 3 dB -1.6 dB 0° ÷ Ʃ Exciter 10 kW 0° 4.77 dB ÷ Drive -4.77 dB 30 kW 0°...
Page 98: Fax40 Rf Block Diagram
4‐6 Section-4 Theory October 28, 2013 4.1.5 FAX40 RF Block Diagram The FAX40 contains four 10 kW power blocks in 2 cabinets. One power block contains the Micro Module controller, the other power blocks have only a LED Status board. Figure 4‐6 is a block diagram of the RF of the FAX40. 3 dB 10 kW 0° 20 kW -90° -6 dB 0° 3 dB -3 dB 0° ÷ 10 kW -90° 3 dB -6 dB -90° 3 dB 40 kW 6 kW Exciter...
Page 100: Pa Module Description
4‐8 Section-4 Theory October 28, 2013 In the event of a failure and the transmitter goes to Backup control, the Backup Control Ref pot would become the power reference. The raise/lower power buttons will not function, however the APC still functions and the power can be adjusted using the pot. The APC is affected by several control lines in the system, forward power, reflected power foldback, forward power limit and mute. When the forward power changes the APC changes in the opposite direction, ie if forward power increases the APC voltage decreases thus lowering the exciter power which in turn lowers the transmitter power back to its setting. If the transmitter has an elevated reflected power that is above a user set threshold of 1.3 to 1.5:1, the voltage on the VSWR Foldback line increases, this causes APC to lower the exciter power. If the forward power limit, which 10% above calibrated power is hit, the Forward Power Limit voltage is increased which decreases the exciter power. If the instantaneous reflected power exceeds 1.5:1, the VSWR Fault circuit will send a Fault OFF the controller as well as a Mute to the APC. The controller will make three attempts to bring the transmitter back to power. After the third attempt the transmitter will stay off and will require user intervention to turn it back on. In Backup control the three‐strike is no longer available and the transmitter will remain OFF in the event of a VSWR fault. The APC is shown driving the exciter, if a product such as the Harris Broadcast Micromax is used, the APC switch to the exciter is opened and the APC switch to the IPA is closed. The APC still functions the same but the extra Op‐Amp sets the correct level for the FAX IPA input. 4.1.7 PA Module Description Each PA Module contains 2 RF Power Amplifiers referred to as "A" and "B." A FAX 10 kW Transmitter and Power Block uses 8 of these modules. One of the eight modules is used as an IPA module. Figure 4-8 PA Module Figure 4‐8 above right side shows the PA Module with the cover off. There are 2 PWAs. On the left is the PA pallet which contains amplifiers A and B. On the right is an additional circuit card that contains the module control logic and interface functions. The PA circuit board is mounted on a thick solid copper substrate. The RF Power transistors are soldered down directly to the copper substrate. Copper is used because it is the best conductor of heat and will dissipate the heat away from the RF power transistors quickly and evenly. The copper substrate then mounts to the aluminum heatsink assembly to dissipate the heat away from the copper. There is a thin film between the copper spreader and the aluminum heatsink for optimum heat transfer.
Page 101: Power Supply System Description
FAX 5/10/20/30/40KW 4‐9 October 28, 2013 To make the module safe to hot plug it the traces for the RF output, RF input and +VDD are a different length, See Figure 4‐9. The RF output traces are longest so when inserting a module the load is the first to be connected. When removing a module the load will be the last to be disconnected. Next in length is the +VDD and finally the last to be connected inserting and the first to be disconnected removing a module is the RF input drive. RF Input RF Output +VDD Figure 4-9 PA Module Edge Connector The +VDD PA voltage has a range from +44 VDC to +52 VDC. The actual voltage varies depending on which mode the transmitter is in: FM only, FM + HD, or HD only mode. The reason to have different voltages for different modes is to maximize transmitter PA efficiency and spectrum performance. The gate bias circuit performs 3 functions: PA ON/OFF, Class C Bias for FM Mode of operation, and Class AB Bias for HD Modes. A control voltage of ‐5V at J2‐4 turns Q5 off which allows the RF Amplifier to operate. The Bias Mode voltage alters the PA bias voltage to cause the PA amplifier to operate at Class AB or Class C. The control voltages come from the module Control board. Thermistors RT1 and RT2 are used to stabilize the bias as the temperature of the module varies. Pots R102 and R103 are set at the factory to precisely set the Class AB bias. Pots R101 and R104 are adjusted for Class C operation. These pots should not be adjusted. Thermistor RT3 monitors the heatsink temperature. If the heatsink temperature gets too high (90° ‐ 100°C), the Module Control board will shut off the full PA Module. 4.1.8 Power Supply System Description The Power Supply Interface Board performs several functions as follows: • Interfaces power supplies DC output with the PA modules •...
Page 102: Fan Control Board Description
4‐10 Section-4 Theory October 28, 2013 The AC Mains connect to the board which feeds the AC into each power supply module. The power supplies are single phase input and operate from 190 to 300 VAC, 50 or 60 Hz. The AC service connected to the FAX must have a Line to Line voltage or Line to Neutral voltage that falls within this range. The AC service into the transmitter or AC distribution panel in the rack can be single phase, 3‐Phase Delta or 3‐Phase Wye. There is an AC Mains Monitor circuit that monitors for low voltage only. The approximate trip point is just below 190 VAC which produces a fault but no action is taken, the transmitter will stay on the air. The transmitter will continue operate when 1 or 2 phases are lost but at a much reduced power. In the power block the supplies are distributed across the phases. Control signal PA ON/OFF from the System Interface Controller, named PS_ON on PS Interface board, feed each power supply to turn its DC output ON or OFF. The DC output can be in the range from +44 VDC to +52 VDC to accommodate different modes of transmitter operation. There is a +VDC output from each of the 7 supplies to feed 7 PA Modules. Each PA has a dedicated Power Supply Module. If a Power Supply Module fails, the associated PA Module will shut off. This configuration allows for multiple failures while the remaining supplies keep the transmitter on the air at a reduced power level. The +VDC for the IPA comes from a diode controlled sharing circuit that connects to each of the PS +VDC lines. Because of the power supply module sharing, multiple supply failures will not affect the IPA +VDC. The IPA has an in‐line fuse F10 (15 Amp) on board. In the Normal Control mode +VDC output is controlled via RS485, if in Backup Control the power supply voltage will change by approximately 2 V when switched between Class C and Class AB. There must be at least two functioning power supplies for the transmitter to remain operating. There is an auxiliary +5 VDC output from each supply. This supply is the main 5 Volts that feeds the control circuitry. There are no other power supplies in the system. Any other voltages on any of the boards in the transmitter are regulated from the 5 Volts. In the case of FAX models with multiple power blocks, the +5 VDC from each is diode gated back to the main power block. If the AC fails to the main power block which houses the Multi‐Unit controller the transmitter will remain on the air using 5 Volts control voltage from the other power blocks. The Airflow is measured by comparing two LM50B temperature sensors, one a heated reference sensor the other in direct path of airflow. When the airflow in the transmitter drops the sensor in the airflow path will increase in temperature and its output will trip U2‐7 causing the transmitter to shut off. Once airflow returns the transmitter will automatically turn back on. Dipswitch S1 serves 2 functions, sections 1 and 2 are used to set the AIRFLOW fault trip level. Switches 4, 5, 6, and 7 are used to disable Power Supply Modules 4, 5, 6, and 7 in the FAX 5 transmitter as it only uses 4 Power Supply Modules. In the 10kW Power Blocks, the are set in the OPEN (OFF) position. Power for the Fans also is provided by the Power Supply Module’s sharing circuit. The shared PA Volts feed fuse F9 (15 Amp) then to the Fan Control Board. 4.1.9 Fan Control Board Description The Figure 4‐11 shows the Fan Monitor board. The Fan Control board monitors each fans tach, controls the speed of ...
Page 103: Front Panel Control/Display Board Description
FAX 5/10/20/30/40KW 4‐11 October 28, 2013 Figure 4-11 Fan Control Board 4.1.10 Front Panel Control/Display Board Description The Control and Display board performs the following functions in the FAX transmitter: • Interface to the Micro Module • Interface to the Front Panel User Interface • Contains Ethernet Ports • Has Backup Hardware control • Generates the APC Reference in Normal Control Mode • Stores Configuration in memory The Control & Display Module consists of a control/display board and micromodule. The control/display board has the simple hardware control circuits to take care of primary functions such as ON/OFF, Module restrike, Remote enable, Drive chain select and Power reference generation. All hardware on the board is associated with interfacing to the micromodule for enhanced control operation. The micromodule board attaches to the Control/display board and provides the key microprocessor control functions as well as the Web interface. It also provides the user interface to the LCD and front panel buttons and status indicators. The FAX transmitter has three control modes of operation, Normal, Basic hardware control and Life support control. Normal Mode: In this mode of operation, the transmitter has full functionality with the primary control functions being done in Hardware (HW) but the hardware can be controlled by the microprocessor. The key states such as ON/OFF, Remote ENABLE/DISABLE, etc are stored in non volatile hardware ICs that will remember the last state even ...
Page 104: System Interface Control Board Description
4‐12 Section-4 Theory October 28, 2013 The transmitter configuration is stored in memory on this board. This configuration contains the user setup, ie dual exciter, frequency,exciter type, etc, as well as all calibrations. This file is a downloadable file that can be stored on a computer and uploaded in the event the Control and Display board needs to be replaced. It is a good idea to store this when the transmitter is first installed and any time a change to setup or calibration is completed. The board also provides the power control reference to the System Interface board APC hardware. This reference is 3.5 VDC and remains constant under normal conditions. If the raise or lower power button is pressed this voltage changes, lower power will lower the reference voltage. See APC and System Interface for further details. 4.1.11 System Interface Control Board Description The FAX 10kW transmitter contains a System Interface control Module that mounts directly to the right of the Power Supply Modules. This board provides several functions for the transmitter system. • Operates as a transmitter interface or a power block interface (FAX20/30/40) • Hardware control in lifesupport mode • Exciter interface and exciter RF switching • The APC hardware is located on board • OptoCouplers for Remote control via Parallel I/O • Forward and reflected power detection and metering samples • Hardware for VSWR protection and power limit functions • System status LED’s • Multiplexing bus for meter readings The exciter interface can be setup to accept any exciter, Harris Broadcast or another manufacturer. If a non‐Harris Broadcast exciter is used the dipswitch settings will need to be properly set and a custom interface cable made. If ...
Page 105 FAX 5/10/20/30/40KW 4‐13 October 28, 2013 Remote control functions are located on board. The User Interface J1 on the rear panel interfaces to the opto‐ couplers. This is the only remote control available in backup mode. RF Mute and TX OFF inputs can be defeated by setting dipswitches. There are also four programmable Status outputs that are user definable, a computer must connected via Ethernet to set this up. There are two interlocks available External and Equipment. The External Interlock must be closed or the transmitter will not operate. If the External Interlock is opened during operation the transmitter shuts down and requires a TX ON command to resume. Equipment Interlock when pulled low will shut the transmitter off, when switched hi the transmitter will resume normal operation. There are remote analog voltage outputs for System Forward Power, System Reflected Power, PA Voltage and Total PA Current (DC). The forward and reflected power detectors are identical circuits. These are fed from the same port on the System directional coupler. Using the same port and having identical detectors and control of the gain in the detector path allows for automatic calibration of reflected power without adding a mismatch or swapping cables on the coupler. When calibrating the system power the the user inputs the TPO to calibrate to and the AGC is turned off, this allows the power to be adjusted without fighting the power control. The gain through the detector path is set to minimum at this point. Phase 1 is complete. Next step is to set the exciter RF power so the transmitter forward power as read on a external meter is same as the user TPO entered. When the calibration routine is started the controller will set the gain to get 3.5 VDC for a forward power sample. THe controller then turn calibrate to ON (Same as setting S2‐8 to ON) and this puts a 2 VDC reference on each gain stage input. The micro reads the voltage at the output of the forward power stage, then adjusts the reflected stage gain until it matches the forward stage voltage output. Calibration is turned off and the TPO is set to equal the 3.5 VDC. Reflected is then calculated based on the 3.5 VDC being 1.5:1 relative to the TPO set. VSWR Fault and foldback as well as Forward Power limit are implemented in hardware. The Forward Power limit is set to 10% above the TPO calibrated. This is done off the 3.5 VDC reference that was established during the calibration routine. The 3.5 VDC from the forward power detector stage is sent to a comparator circuit, when the forward power exceeds 110% of TPO the comparator output increases. The forward power limit is fed to the APC which limits the it from increasing system power. VSWR has two thresholds, foldback and fault. The foldback threshold is user settable in the GUI in the range of 1.3 to 1.5:1. Based on the 3.5 VDC sample that is equal to 1.5:1 relative to the TPO calibrated, the hardware setpoint is 1.3:1 for foldback. If the user sets this to a higher value the micro increases the comparator reference voltage to set the trip point higher. In backup control mode this defaults back to 1.3:1. The VSWR Fault is set to 1.5:1 in hardware. When the VSWR exceeds 1.5:1 a resettable latch is set which sends a System Fault OFF command to the micro. The micro will shut the transmitter off and attempt to bring the transmitter back on, or Restrike. The micro module will attempt to restrike the transmitter three times before is stays off. The advance 3‐strike is only available in Normal Control mode.
Page 107: Section-5 Maintenance
FAX 5/10/20/30/40KW 5‐1 October 28, 2013 Section-5 Maintenance Introduction This section provides maintenance, calibration and board replacement procedures for qualified technical personnel. This section assumes that the Engineer performing the maintenance has a working knowledge of the transmitter and Section 3 of this manual in particular. Routine maintenance of the FAX series transmitter consists of regular cleaning and the monitoring of power, VSWR, voltages, and current readings to detect any deviations that might indicate a developing problem.To maximize equipment reliability and longevity, it is important to develop and stick to a well designed maintenance routine. A transmitter’s performance and longevity will be maximized if it is properly maintained by a well‐trained, technically skilled individual. To this end, Harris Broadcast offers a variety of training classes specific to Flexiva FAX series transmitters. Contact your Harris Broadcast representative or visit the Harris Broadcast website at www.harrisbroadcast.com for more information on training offerings. 5.1.1 Safety Precautions The amplifier chassis is composed of two general zones: the front half, as accessed by the front door and the rear half, as accessed by the rear door. The front door is hinged and can be opened while the transmitter is running for access to the PA, IPA, and PS modules. The PA, IPA, and PS modules may be replaced while the transmitter is operating. The rear door requires a tool to gain access and should never be opened while the transmitter is operating. It is very dangerous to attempt to make measurements or to replace components in the rear chamber with the mains power applied. If door is opened while transmitter is operating, the transmitter will trip the airflow sensor and shut the transmitter down until it is closed. Shut off all power before servicing the transmitter, other than replacement of PA, IPA, and PS modules. Warning NEVER PERFORM TRANSMITTER MAINTENANCE WHILE ALONE AND/OR NOT FULLY ALERT.
Page 108 5‐2 Section-5 Maintenance October 28, 2013 Table 5-1 Control & Display Board Switch S15 Switch Name Schematic Default/ Description Sheet User Setting S15‐1 SW Control Disables all Software Control of Hardware Disable S15‐2 FP Enable ON/User Disables front panel ON/OFF and Raise/Lower Buttons when Remote is Enabled S15‐3 Remote ON/User Sets Remote Enable LED to Green Enable LED S15‐4 Remote OFF/User Sets Remote Enable LED to Red Enable LED S15‐5 SW APC ...
Page 109 FAX 5/10/20/30/40KW 5‐3 October 28, 2013 Table 5-3 System Interface Board S2 (Rev G hardware and earlier) Switch Name Schematic Default/ Description Sheet User Setting S2‐1 APC ON ‐ for hardware control of APC ; OFF for software control of APC; Hardware Software control of APC not implemented at this time. If switch is set to Control OFF the APC will not function. Table 5-4 System Interface Board S3 Switch Name Schematic ...
Page 110 S5 is used for Exciter A and S6 for Exciter B and have same definitions. If exciter A and B are different models ensure the switch settings are correct for proper operation of transmitter. Table 5-6 Harris Broadcast Exciters Setup Table S5 & S6 System Interface Position ...
Page 111 FAX 5/10/20/30/40KW 5‐5 October 28, 2013 Table 5-8 Power Supply Interface Board S1 Switch Name Schematic Default/ Description Sheet User Setting S1‐6 PS 6 Disables PS6 Fault in FAX5 Only Disable S1‐7 PS 7 Disables PS7 Fault in FAX5 Only Disable S1‐8 Not Used Note 1 ‐ Only change the airflow trip point when instructed to do so by Harris Broadcast Service Engineer. Table 5-9 Fan Control Board Switch S1 (Power Block Backdoor) Switch Name Schematic ...
Page 112 5‐6 Section-5 Maintenance October 28, 2013 Table 5-10 Fan Control Board Switch S1 (Reject loads) Switch Name Schematic Default/ Description Sheet User Setting S1‐6 FULL OFF Sets the fans to run at slow speed under normal operating temps (Minimal reject load power) S1‐7 RF 1 Sets Gain of RF Detector for Reject Load use only; See Note 1 S1‐8 RF 2 Sets Gain of RF Detector for Reject Load use only; See Note 1 Note 1 ‐ S1‐7,8 set the RF detector gain. These switch settings vary for each reject load. See reject load calibration procedure in Section 5 of this manual. Table 5-11 Cabinet Interface Board S1 (FAX20/30/40 Only) Switch Name Schematic ...
Page 113: Transmitter Cleaning
FAX 5/10/20/30/40KW 5‐7 October 28, 2013 Table 5-12 PA Backplane Board Switch S1 Switch Name Schematic Default/ Description Sheet User Setting S1‐5 Analog Bias OFF/User ON Enables the APC voltage to control the IPA; OFF disables APC Control voltage to IPA (Exciter Control) S1‐6 IPA Current Sets the Overcurrent trip point of the IPA. Always OFF. Reference S1‐7 PA Fault Slot ON for Backplane 2 ‐4(PA Slots), OFF for Backplane 1 Dependan S1‐8 IPA Fault Slot ON for Backplane 1(IPA Slot); OFF for Backplane 2‐4 Dependan Note ‐ Backplane 1 is at the top (Row with IPA) and Backplane 4 is bottom row.
Page 114: Air Filter Replacement Procedure
Air Filter Replacement Procedure The front door air filter requires periodic replacement. How often depends on the air quality at the site. When the filter is filled with dust/dirt, it will reduce the air flow to the point where the modules will overheat, then shut down. All FAX transmitters are supplied with a spare piece of filter media, so that a new piece may be rotated into service while the original piece is being washed and allowed to dry. Warning DO NOT UNDER ANY CIRCUMSTANCE INSTALL A WET OR MOIST FILTER IN THE TRANSMITTER. CONTACT HARRIS BROADCAST SERVICE TO PURCHASE ADDITIONAL FILTER MEDIA, AS NECESSARY. Open front door by loosening thumbscrews on reverse side of front door. STEP 1 On the inside of the door, remove the metal frame holding the filter in Remove filter STEP 2 media from filter retainer frame. With a clean cloth wipe excess dirt from the door frame ...
Page 115: Periodic Cleaning And Inspection
FAX 5/10/20/30/40KW 5‐9 October 28, 2013 Remove PA module from transmitter. STEP 1 Caution DO NOT ATTEMPT TO CLEAN THE PA MODULES WITH COMPRESSED AIR WHILE THEY ARE STILL INSTALLED IN THE TRANSMITTER. THIS WILL FORCE DUST DEEPER INTO THE TRANSMITTER. Blow compressed air into heatsink fins to remove dust buildup. If compressed air is not STEP 2 available, use a vacuum cleaner to suction dust from heatsink.
Page 116: Date And Time Battery
5‐10 Section-5 Maintenance October 28, 2013 Inspect all exposed PC boards for signs of heat discoloration or rings of dried solder flux, STEP 12 an indication of partial solder melting. Shine light through combiner cover (but do not remove) to inspect output assembly STEP 13 combiner coils for any corrosion that is crusty or pasty. It is normal for the coils to change color over time. This does not negatively impact their performance, provided it is simple oxidation and not a more aggressive corrosion due to harsh air pollution components. Verify all push‐on (faston) connections are fully seated on PA backplanes, PS interface STEP 14 board, AC mains inputs, etc. Shine light through combiner support frame to deck of output assembly and inspect STEP 15 ballast loads for burning or cracking. Close amplifier chassis rear door. STEP 16 Return hex key to storage position. STEP 17 If transmitter is FAX20kW, visually inspect the 6kW RF reject load on rack cabinet upper STEP 18 rear for signs of cracked resistors or other debris. Remove AC mains lockout precautions and apply AC mains power. STEP 19 Press front panel ON button to turn transmitter on. STEP 20 Verify transmitter returns to full power and no alarms are reported.
Page 117: Pa/Ps Replacement
FAX 5/10/20/30/40KW 5‐11 October 28, 2013 Figure 5-1 Date and Time Battery Location PA/PS Replacement 5.5.1 Changing PA, IPA, & Power Supply Modules The PA modules are hot‐pluggable and may be swapped at any time while the transmitter is operating. Any PA module may be swapped with a PA module in another position, including the PA module in the IPA position. Figure 5-2 Module Locations Note The IPA and PA modules are heavy for their size. Be prepared to support the weight when module is removed.
Page 118: Power Supply Module Replacement Procedure
5‐12 Section-5 Maintenance October 28, 2013 Note The IPA module contains two IPA amplifiers with a green “ON” status LED for each module half visible from the front of the IPA module. If the 10kW Transmitter is operating with power out and the IPA is removed, the transmitter will stop producing RF and therefore will be off-the-air.
Page 119: Configuration File, Fault Logs And Software Upload5-13
FAX 5/10/20/30/40KW 5‐13 October 28, 2013 Insert replacement PS module. The two right‐most LEDs should light Green STEP 6 automatically once PS module is fully engaged. Be sure PS module is firmly in place and the metal clip in the upper left corner secures the STEP 7 PS front piece. It may be necessary to press the ON button to clear the faults to allow the module to turn on. Close amplifier front door. STEP 8 Configuration File, Fault Logs and Software Upload 5.6.1 Config File Save/Upload Once your transmitter has been installed and configured properly it is a good idea to save the configuration file in case the need to upload it in the future comes up. The information is stored on the Control and Display Board, in case of failure of that card you will need to upload a saved configuration. This file should be saved each time there is a change made to configuration, calibration or new software is uploaded. Use a file naming scheme that allows for easy access to the correct file and date it. 5.6.2 Save Config File Connect the PC to the transmitter using a Ethernet cable to either the front or rear STEP 1 Ethernet port. See Section 3.8 for Network setup information.
Page 120: Upload Config File
5‐14 Section-5 Maintenance October 28, 2013 5.6.3 Upload Config File Establish a connection to the transmitter with a PC. STEP 1 System>> System Setup>>Network>> ISP menu. See Figure 5‐5 STEP 2 Click Browse and locate the correct file for the upload. The default name given by the STEP 3 FAX is eeprom. This name may vary if the name was changed when saved from transmitter. Also note that it is best to have this file located on your hard disk drive not on a removable stick. Click on the file, then Open and the box should populate with the file location and name. STEP 4 Click Submit button and the file should upload. Once the upload is complete a PROGRAM STEP 5 button will appear. Figure 5-5 FAX ISP Program Screen Click on the PROGRAM button, a box should pop up and state that the transmitter will STEP 6 loose communication and loss of RF output. Click OK, when programming is complete the transmitter will reboot. 5.6.4 Software Update Procedure The following steps detail the procedure to update the FAX series transmitter software. You will need a PC to the ...
Page 121: Retrieving/Printing Fault Logs
FAX 5/10/20/30/40KW 5‐15 October 28, 2013 Figure 5-6 FAX isp Home Screen Click Browse and locate the correct file for the upload. This file should be named STEP 4 something like FAX_CONTROLLER_APP_REVG_0018.s19. This name may vary some. Also note that it is best to have this file located on your hard disk drive not on a removable stick. Click on the file and the box should populate with its location on the disk. Press SUBMIT. STEP 5 The file will begin to upload, do not press any keys until the screen appears like Figure 5‐ 7. The file size will vary depending on Rev. Figure 5-7 isp Program Screen The code is now in memory inside the transmitter but has not been programmed. Click STEP 6 on the PROGRAM button, the message "Programming Flash..." and "Rebooting..." should appear. Transmitter should reboot. STEP 7 Go back to the IP address of the transmitter and Login, verify the code took by navigating STEP 8 to the System>>Service>>Version screen. Verify the software revisions. 5.6.5 Retrieving/Printing Fault Logs This procedure details the steps to retrieve the fault log from a FAX Series transmitter. The logs can be saved as a ...
Page 122: System Calibration Procedures
5‐16 Section-5 Maintenance October 28, 2013 Figure 5-8 FAX Fault Log Click on File, Save As and save as a text or htm file. STEP 5 To save into excel, highlight the all boxes, and copy on to clipboard. STEP 6 Open excel and right click, select "Paste Special. When the box appears click on "Text", STEP 7 fault log should appear in the boxes. To Print the file click on the Printer icon and send to a printer connected to the PC. STEP 8 System Calibration Procedures 5.7.1 System Forward/Reflected Power Calibration The output power of the transmitter system is accurately calibrated at the factory using a precision Calorimeter and load. There is no separate calibration for reflected power, once the forward is calibrated the computer auto‐ matically calibrates the reflected power in the same calibration routine. There are separate calibrations for each type of modulation, FM, FM+HD and HD. If the transmitter is used for more than one mode, each modulation type used must be calibrated. The calibration is stored in the transmitter memory and can also be downloaded to a con‐ fig file and stored for use in the case of a failed Control and Display Board. If the transmitter system needs calibra‐ tion, a calibrated power meter is required, either in‐line or a stand‐alone meter such as an Agilent 4418 or equivalent. If the transmitter is running one of the iboc modes, ensure that the power meter is capable of measur‐ ing digital modulation.
Page 123: Power Block Power Calibration Fax20/30/40 Only5-17
FAX 5/10/20/30/40KW 5‐17 October 28, 2013 Use the correct coupling factor based on which location that the wattmeter will be connected. STEP 5 Enter this coupling factor into the wattmeter. Please refer to the wattmeter’s instruction manual on how to enter it. To perform calibration perform the following steps. Turn transmitter system on and operate at rated power for a minimum of 30 minutes STEP 1 Be sure transmitter remote is in DISABLE. If not, press the DISABLE button. STEP 2 In the SETUP>TX CALIBIBRATE>TX POWER CAL menu verify that the correct modulation type is STEP 3 shown. There are 3 possible types, FM, FM+HD and HD. If the correct modulation is not shown, refer to the exciter to correct it. Once the modulation type is correct, set the TX TPO to the correct power for the transmitter. In STEP 4 HD ONLY mode this power should be set to 5 % more than TPO for calibration. Press the enter button and the highlight should go away. At the bottom of the screen the message "PHASE 1 Done" should appear after a few seconds. Go to the exciter and set it’s forward power until the in‐line or external wattmeter reads the same STEP 5 as the TX TPO setting in Step 4. Refer to the exciter instruction manual to adjust the forward power. Once the meters match allow the power to settle for a few seconds to ensure the transmitter is STEP 6 stable. Go to the Calibrate line and change it to "YES" and press the enter button. The transmitter will STEP 7 begin calibration, and the message "IN PROGRESS" will appear. This will take several seconds, do ...
Page 124: Transmitter Air Flow Calibration
5‐18 Section-5 Maintenance October 28, 2013 Set the UNIT POWER to the value calculated using the formula described above. STEP 4 To set the gain correctly, access to the System Interface Board in each power block will STEP 5 be required. This is the board located to the right of the power supplies behind the Unit Controller panel. Notice on the LCD a voltage reading for each power blocks forward and reflected power. STEP 6 Using S9 (raise) and S11 (lower) on each System Interface Board, set each power block so the forward reading is 3.49 V. See Figure 5‐9 for switch location. Set Dipswitch S2 (top of the board on the left) section 8 (far right section of S2) to ON. STEP 7 This puts the board in the calibration mode. Figure 5-9 Power Block System Interface Control Board. Now adjust reflected S12 (lower) ad S13 (raise) so the Reflected voltage value for forward STEP 8 and reflected (using forward and reflected for same power block) match. Repeat for each power block. Set Dispswitch S2‐8 on all power blocks to OFF. STEP 9 Go to Calibrate, change to YES and press Enter. Once the message DONE appears, STEP 10 Calibration is complete.
Page 125: Exciter Power Calibration/Switchover Threshold5-19
FAX 5/10/20/30/40KW 5‐19 October 28, 2013 Repeat this procedure for each power block in the transmitter. STEP 6 5.7.4 Exciter Power Calibration/Switchover Threshold The FAX transmitter does not measure exciter power internally, it uses a dc voltage that is proportional to the Exciters RF output. This voltage is in the Exciter interface cable and comes in for each exciter in the system. If using dual exciters each exciter will require calibration. No wattmeter is required, the FAX is calibrated by matching it to the exciters front panel power reading. If the exciter switchover threshold needs to be set or adjusted, first verify the both exciters power meters match the power meter displayed on the FAX and the EXC PWR voltage is in range. If necessary do the Exciter Power Calibration steps before proceeding on to setting the switchover threshold. Exciter Power Calibration Go to SETUP>EXCITER SETUP. The exciter selected should be the one that is presently on‐ STEP 1 air. Go to EXC PWR CAL menu. STEP 2 Ensure Modulation type is correct. STEP 3 EXC PWR reading should be in the range of 1000 to 2000 mV. If not go to the exciter and STEP 4 set the scaling for forward power so the voltage is in range. Although the minimum voltage for setup is 100 mV for reliable operation of this feature keep the voltage in the range stated. Set the EPWR CAL value to match the exciter power reading. Notice that this reading is in STEP 5 milliwatts. Some exciters such as the Flexstar read in Watts, so 2 watts will be 2000 ...
Page 126: Power Supply Voltage Set
5‐20 Section-5 Maintenance October 28, 2013 5.7.5 Power Supply Voltage Set The FAX transmitter allows the user to se the DC voltage output of the power supplies to obtain either best overall efficiency in the Class C (FM) mode or for best spectral performance in Class AB(HD modes). The FAX allows the power supplies to be set in the range of 44 VDC to 52 VDC. In Class C the lower the voltage typically the better the efficiency. In Class AB care should be taken not to lower the voltage to a point that the RF output spectrum exceeds the mask. If changing this setting in HD modes turn RTAC off and verify the spectrum performance has not significantly degraded when changing the voltage. The power supply voltage setting is stored for each mode (FM, FM+HD and HD), if using more than one mode the voltage must be set for each. Go to SETUP>TX CALIBRATE>POWER SUPPLY SET STEP 1 Ensure Modulation type is correct. STEP 2 Change the PS VOLTS to the desired voltage. It is not necessary to turn transmitter off to STEP 3 change the voltage. Change SET to Yes and press enter button. STEP 4 5.7.6 Reject Load Calibration (Power/Fan Speed) FAX20/30/40 Only Reject loads are only used in the FAX20/30/40 to combine multiple power blocks and cabinets. In a FAX20 there is only one Reject load, in a FAX30 and FAX40 there are three. Each load must be calibrated separately. Typically ...
Page 127: Backup Control Mode Power Setting
FAX 5/10/20/30/40KW 5‐21 October 28, 2013 5.7.7 Backup Control Mode Power Setting In the event that the Micro Module would fail the transmitter will revert to backup control. In backup control the power control reference from the mirco is lost and the potentiometer on the System Interface Board or Multi‐Unit Interface in FAX20/30/40, becomes the power reference. This pot can be set to the full range of the transmitter RF power capability. This pot is set at the factory to the customer TPO on the sales order. If adjustment is required it is not necessary to take the transmitter off air. On the System Interface board or the Multi‐Unit Interface on the FAX20/30/40, set the STEP 1 Normal/Backup switch to Backup. Red Backup Mode LED should be on Adjust the PWR SET located on System Interface board or the Multi‐Unit Interface pot to STEP 2 desired power Set the switch back to Normal. Red Backup Mode LED should be off STEP 3 5.7.8 UPS Mode Power Setup User Remote J1 Pin 8 on the rear of the transmitter, Power Block 1 in FAX20/30/40, sets the FAX into the UPS mode. This line would typically come from a UPS or a AC Mains generator to set the transmitter to a power out at a point that the generator was capable of supplying enough power without being overdissapated. It also can be used in the event the transmitter needed to be turned down in power to do maintenance on the system or antenna. With the transmitter ON, ground pin 8 of User Remote J1. This must be a continuous STEP 1 ground If this has not be filed set the transmitter should drop to about 25 % power and System ...
Page 128: Board And Assembly Replacement Procedures
5‐22 Section-5 Maintenance October 28, 2013 Figure 5-10 PA Bypass J4 Board and Assembly Replacement Procedures 5.8.1 Backplane Board Replacement There are 4 Backplane boards in each 10kW Power Block. The function of the Backplane Board is to interface the Controller, Power Supply, and RF signals to each PA Module. When installing a new Backplane Board, it is important to set all 8 of the switches on Dipswitch S1 to the same settings as the switches on the board being replaced. Remove all power from the transmitter STEP 1 Remove the 2 PA modules that plug into the backplane being removed. STEP 2 Open the back door of the transmitter block to gain access to the boards. STEP 3 The make access to the backplane easier, unbolt the Splitter/Reject load assembly. This STEP 4 is the large assembly with the two heatsinks mounted to the right wall in the rear of the cabinet. It is not necessary to completely remove the assembly but it helps to move it away to gain access to the right side. To remove the Splitter assembly, first remove the 14 coaxes off the 14‐way combiner. STEP 5 There are four nuts that hold the assembly in place two at the top and two on the ...
Page 129: System Interface Control Board Replacement
FAX 5/10/20/30/40KW 5‐23 October 28, 2013 Figure 5-11 PA Backplane Boards Note where all the wires are located, ensure that they go back to the same location when STEP 7 re‐assembling the unit. Remove the ribbon cable, DC Power cables and RF connectors from the backplane being STEP 8 replaced. Using a small phillips screwdriver, remove the nine silver screws from the backplane. Lift STEP 9 the backplane from the cabinet. Note Do not remove any brass screws. Set the dipswitch on the new board to match the board just removed. STEP 10 Install the new backplane into the transmitter and secure with the nine screws. STEP 11 Replace the RF cables, DC power Cables and the ribbon cable to the same location they STEP 12 were removed from. Re‐install the Splitter/Reject load assembly to the right side wall on the transmitter.
Page 130 5‐24 Section-5 Maintenance October 28, 2013 illustrates the location of the Multi Unit System Interface PWA and the System Interface Controller PWA within the 10 kW Power Block. To remove the System Interface Unit Control PWA, begin by removing 2 Phillips screws from the front of the System Interface Module. See Figure 5‐12. Figure 5-12 System Interface Control Module Mounting Screws Carefully pull the module straight out. The right side of the metal housing sits in a guide mounted on the chassis shelf. Figure 5-13 System Interface Control PWA Carefully remove the ribbon cable connectors, 5 SMA connectors and the power supply connector. All of the cables are labelled to make re‐connection easier. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 131: Multi Unit System Interface Board Replacement5-25
FAX 5/10/20/30/40KW 5‐25 October 28, 2013 Figure 5-14 System Interface Control Cables Removed After the Module is removed, use a Phillips screw driver to remove the PWA from the metal housing it attached to by removing 6 Phillips screws. Attach the replacement PWA to the metal housing. Set the dipswitches to match the removed boards on Rev E and higher PWA’s.
Page 132: Control And Display Board Replacement
5‐26 Section-5 Maintenance October 28, 2013 Figure 5-16 Remove Multi Unit System Interface Control Module Cables After the Module is removed, use a Phillips screw driver to remove the PWA from the metal housing it attached to by removing 6 Phillips screws. Attach the replacement PWA to the metal housing. Set the dipswitches to match the removed boards on Rev E and higher PWA’s.
Page 133: 14-Way Power Splitter Assembly Replacement
FAX 5/10/20/30/40KW 5‐27 October 28, 2013 Figure 5-17 Control and Display Board with Micro Module 5.8.5 14-Way Power Splitter Assembly Replacement The following instructions explain how to replace the Splitter Assembly in the rear of a 10 kW power block. These instructions can also be followed to remove the splitter for easier access to the Power Supply Interface PWA that is mounted behind it. Caution THE SPLITTER ASSEMBLY ALSO CONTAINS THE REJECT LOAD RESISTORS FOR THE 14-WAY COMBINER AND IS DESIGNED TO HANDLE HIGH TEMPERATURES. IF THERE IS AN IMBALANCE IN THE POWER BLOCK DUE TO FAILURE OF PA MODULES THE HEATSINK COULD BE HOT.
Page 134: 14-Way Combiner Assembly Replacement
5‐28 Section-5 Maintenance October 28, 2013 Figure 5-18 Splitter Nut Locations The splitter still has the coaxes to the PA Backplane boards attached. The splitter can be STEP 5 lifted but not removed. With a 5/16" wrench loosen each of the SMA coaxes and remove them from the backplane boards. Also remove the IPA input coax located on the side of the Splitter near the middle of the assembly. Carefully remove the splitter. Reverse these steps to replace the new assembly. STEP 6 5.8.6 14-Way Combiner Assembly Replacement The following instructions explain how to replace the 14‐Way Combiner Assembly in the rear of a 10 kW power block. These instructions can also be followed to remove the combiner for easier access to the Power Supply Interface PWA that is mounted behind it. Prior to removal the transmission line connected to the RF output will need to be removed. In higher power FAX transmitters, 20 kW and above, the combiners will need to be removed as well. See the procedures in this section of the manual on how to remove them. Remove all power to the transmitter. STEP 1 Open the back door to the power block that the splitter is to be replaced in. Remove the STEP 2 14 coaxes that are attached from the splitter to the 14‐Way combiner. These are the reject load connections which are not critical and can be reconnected in any location. Remove the hose clamp from the RF output connector. Then remove all of the hardware STEP 3 at the arrows shown in Figure 5‐24 below. This will allow the panel to be tilted up and ...
Page 135 FAX 5/10/20/30/40KW 5‐29 October 28, 2013 Figure 5-19 Remove Hardware at these locations Remove the SMA coaxes on the directional coupler assembly. A 5/16" wrench may be STEP 4 required to loosen them. Remove the 4 nuts and hardware holding the combiner assembly in place. There are 2 STEP 5 on each side of the combiner assembly. See Figure 5‐24 below for nut locations. Figure 5-20 14-Way Combiner Nut Locations The combiner still has the coaxes to the PA Backplane boards attached. The combiner STEP 6 can be leaned forward but not removed. After tilting the assembly forward, carefully remove each of the coaxes that are attached to the backplane boards. The combiner assembly can now be removed from the power block. Reverse these steps STEP 7 to replace with the new assembly. 888‐2720‐001 WARNING: Disconnect primary power prior to servicing. Copyright ©2013, Harris Broadcast...
Page 137: Section-6 Diagnostics
FAX 5/10/20/30/40KW 6‐1 October 28, 2013 Section-6 Diagnostics Introduction This section contains diagnostic and troubleshooting information for the Flexiva FAX FM/HD Series of Transmitters. Should difficulties arise with your FAX transmitter, use the information in this section to help locate and correct the problem. Troubleshooting Tables This section provides troubleshooting tables for FAX series transmitters covered in this manual. The reader is encouraged to carefully study the table in its entirety even if the transmitter is operating without any problems at the present time. Becoming familiar with the following information will be helpful to diagnose and repair problems should any arise in the future. 6.2.1 LED Indicator Explanation GREEN: Means OK. Does not need any attention AMBER: Means WARNING. Transmitter is operating but there’s a problem. Should be investigated ASAP. RED: Means FAULT. Something in the transmitter system has faulted and requires immediate attention. Transmitter could be off‐air. 6.2.2 Transmitter Front Panel Controller LED Indicators Figure 6‐1 shows the FAX transmitter front panel operating with no Faults and the Remote Control Disabled. Table 1 provides an explanation of Status LEDs based on its illuminated color and troubleshooting tips to resolve warnings and Faults when they occur. Figure 6-1 FAX Front Panel Status LED’s 888‐2720‐001 WARNING: Disconnect primary power prior to servicing.
Page 138 6‐2 Section-6 Diagnostics October 28, 2013 Also available on the front panel is an RF sample port, this is a convenient way to sample the RF output of the transmitter. This is a sample of Total RF Out from the Directional Coupler built into the Transmitter Power Block that internally connects to the 1 5/8" connector. On 20/30/40kW Transmitter Systems, this front panel port samples the RF output of weach power block. To get the RF sample of the transmitter taken from the transmitter system Directional Coupler, open the front door and locate the SMA connector on the Multi‐Unit Interface panel. This is the sample that comes from the 3 1/8" output connector on top of the transmitter cabinet. Table 1: Front Panel LED Troubleshooting Table Symptom Cause and Solution EXCITER LED is Green Exciter that is on‐air is operating with no alarms or faults. Note: In dual exciter systems the transmitter will not display the fault status of the off ‐air exciter. EXCITER LED is Yellow Exciter relay has tripped. Check the off‐air exciter RF output. The relay trips on RF power from exciter being too low. EXCITER LED is Red On‐Air exciter has a fault. Refer to the exciter LED’s and manual for further information. DRIVE CHAIN LED is Green All IPA’s in all power blocks are operating normally with no faults. DRIVE CHAIN LED is Yellow IPA Relay has tripped due to low power on either A or B side. Check IPA Module LED’s and fault log for further information. DRIVE CHAIN LED is Red IPA is faulted. Check IPA module LED’s in each power block if both A and B sides are green check RF Switch Board in each power block. IPA faults are VSWR, Over Current,Under Voltage,Overdrive or OverTemp POWER AMP LED is Green All PA modules in all power blocks are operating with no faults. POWER AMP LED is Red One or more PA Modules are faulted or removed from the transmitter. Check fault log for ...
Page 139: System Interface Control Module Led Indicators
FAX 5/10/20/30/40KW 6‐3 October 28, 2013 Symptom Cause and Solution SYSTEM LED is Red Transmitter has a serious fault and Transmitter may be OFF or Software Control has been disabled either by user or a failed control board. An Interlock open, Cooling fault or RF Mute has occurred. Check other Status LED’s and fault log for further information. MUTE LED is Green Transmitter is ON and unmuted. Mute LED will be green when transmitter is OFF. MUTE LED is Red Transmitter is ON and Muted. Check Equipment Interlock J1‐9 of USER REMOTE connector on rear of power block 1. Check MUTE line J1‐7 of USER REMOTE connector on rear of power block 1. Transmitter also will flash MUTE LED red when switching to backup exciter or IPA, it should go back green once switching is complete. Restrike command will briefly turn MUTE LED red. 6.2.3 System Interface Control Module LED Indicators Figure 6‐2 shows the FAX transmitter System Interface Control Module Status LEDs. Following Figure 6‐2 is an explanation of status LEDs based on its illuminated color and troubleshooting tips to resolve warnings and faults when they occur. Note Each 10kW power Block contains an System Interface Control Module that is located at the right end of the Power Supply Modules.
Page 140 6‐4 Section-6 Diagnostics October 28, 2013 Figure 6-2 Interface Control Module Front LEDs Refer to the drawing 801‐0234‐051 sheet 9 of 13. DS1: +5V: Illuminates Green when the +5 Volt supply for the controller is on. 5 V typically runs 4.6 VDC DS2: FWD PWR: Normally OFF. Illuminates Yellow when the Forward Power Limit (<110% of calibrated power) is reached DS3: VSWR FB: VSWR Foldback: Normally OFF. Illuminates Yellow when the VSWR threshold (1.3:1 to 1.5:1depending on user setting) is exceeded and the transmitter goes into Power Foldback mode. DS5: EXT INTLK: External Interlock: OFF when Interlock circuit is complete. Illuminates Red when Interlock circuit is open User Remote J1‐24 to J1‐25. Transmitter will fault off and require user to turn transmitter back on. DS7: FLT OFF: System Fault OFF: Normally OFF. Illuminates Red when the transmitter Faults OFF. Check other status LED’s and the fault log for further information. VSWR Fault greater than 1.5:1 (not Foldback)will cause a System Fault Off, also an airflow fault will cause the system to fault off. DS9: VSWR FLT: VSWR Fault: Normally OFF. Illuminates Red when the VSWR threshold (1.5:1) is exceeded. This will also cause a FLT OFF led to light. DS11: EQUIP: Equipment Interlock: Normally OFF. Illuminates Red when the transmitter Equipment Interlock circuit J1‐9 is grounded. Transmitter will mute until the interlock J1‐9 of USER REMOTE is open, then transmitter will return to TPO. DS28 System LED should illuminate as well. DS13: AC FLT:AC Mains Fault: Normally OFF. Illuminates Red when the AC Mains input voltage drops below the operating range of the power supply. This fault will trip when the AC voltage at the input to the Power Supply Interface board drops below 190 VAC on any phase. Verify the AC Mains to the transmitter is within the range for WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 141 FAX 5/10/20/30/40KW 6‐5 October 28, 2013 the service being used (single or 3‐phase). Check fuses for low voltage detector on each phase on the Power Supply Interface board in rear of power blocks. Verify cabinet or wall circuit breaker has not tripped. DS15: LOAD FLT: Reject load Fault: Normally OFF. Illuminates Red when a fault in the combiner reject load occurs. This fault is either a fan has failed, the temperature in the reject load has exceeded fault level, or the reject load input power is high. If a reject load fault has occurred the transmitter will automatically switch to Low Power Mode, approximately quarter power. Power Reference voltage will drop to 2.7 VDC. DS17: RF MUTE: Normally OFF, lights when the RF is muted by a TX OFF command. DS19: Exciter Not Ready; Normally OFF. Illuminates Yellow when the Exciter is muted. Check Exciter manual for further information. DS20: DRV CHN: Drive Chain: Normally OFF. Illuminates Yellow when the IPA is muted. This will occur when switching to the backup IPA. DS21: REMOTE: Remote Mute: Normally OFF. Illuminates Yellow whenever a RF mute occurs. Check J1‐7 of USER REMOTE for ground which mutes the transmitter. DS4: FM: Illuminates Green when the transmitter is in FM Mode. DS6: FM+HD: Illuminates Green when the transmitter is in FM + HD Mode. DS8: HD: Illuminates Green when the transmitter is in HD Mode. DS10: MUX: Flashes with MUX activity. This should flash all the time. DS12: APC OFF: Normally OFF. Illuminates Yellow when the APC is turned OFF. APC will be disabled when there are faults in the system such as failed PA module or PS module. Check other LED’s and the fault log for further information. This can also be turned off manually in the LCD Menu tree. DS14: EXC B: Normally OFF. Illuminates Yellow when the backup Exciter is switched into the Drive Chain. DS16: LOW PWR: Normally OFF. Illuminates Yellow when the transmitter is switched to the Low Power/UPS mode via J1‐8 or USER REMOTE. This will also occur when the Reject Load has a fault (Fan, RF or Temp). DS18: RESTRIKE: Normally OFF. Momentarily illuminates Yellow when the transmitter experiences an ON command pulse. This could be from an AC power failure, a High VSWR, etc. If the transmitter does not come ON and stay ON, another Restrike occurs. If the transmitter does not stay ON after the 3rd Restrike, it stays OFF. DS34: IPA CTRL: APC to IPA: Illuminates when the transmitter is setup for APC to drive the IPA DS31: EXC: Exciter: Normally OFF. Illuminates Red when an on‐air Exciter fault occurs. Check Exciter manual for further information. DS30: DRV: Drive Chain Summary Fault: Normally OFF. Illuminates Red when an IPA fault occurs. Check fault Log for further information. DS32: PA: Power Amplifier Summary Fault: Illuminates Red when any type of PA fault occurs. Check fault Log for further information. DS29: PS: Power Supply Summary Fault: Normally OFF. Illuminates Red when any type of PS fault occurs. Check fault Log for further information.
Page 142: Telnet Session
6‐6 Section-6 Diagnostics October 28, 2013 Telnet Session Telnet is another way of helping diagnose a problem with the transmitter. Customers should only use telnet to view readings and not use telnet to control the transmitter unless asked to do so by a Harris Broadcast Service Engineer. To open a telnet session the Windows command prompt can be used. If using Windows 7, a terminal emulator program must be used. Figure 6-3 Telnet Login Screen To open a session ensure the computer is either connected directly to the transmitter Ethernet port or connected to the same network as the transmitter. If connecting direct to the front panel Ethernet, ensure the computer network properties is set to DHCP. Once the computer is connected go to the command prompt and type telnet plus the IP address, ie "telnet 192.168.117.88". The screen should appear as in Figure 6‐6 asking for a password. Prior to August 2013 shipments, the telnet password is "admin". August 2013 and later shipments password is "harrismfg" Note: The number of telnet pages will vary depending or the revision of code installed in your transmitter. Figure 6-4 Telnet Page 1/7 Page 1 of the telnet shows basic information about your transmitter including serial number, MAC and IP addresses, software and hardware revs. Any item shown in parenthesis () are commands, pressing the corresponding number in that page to set. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 143 FAX 5/10/20/30/40KW 6‐7 October 28, 2013 1. Temp ‐ Rear temperature of the transmitter that is measured on the Power Supply Interface Board. This temperature is the hot air exhausted from the PA modules and power supplies. 2. +5.0 VDC ‐ 5 volt line form the aux output of the the main power supplies. This is bussed together on the Power Supply Interface board and distributed throughout the control system. 3. +3.3 VDC ‐ Regulated 3.3 VDC on the Control/Display Board to run the Micro Module. Schematic sheet 7. 4. +1.8 VDC ‐ Regulated 1.8 VDC on the Control/Display Board for the Ethernet Ports. Schematic sheet. These items require a password which is "harris_fax" (1) MAC Address of the front panel Ethernet port. Cannot be changed. (2) Mode of front panel Ethernet port. Static or DHCP user setting. (3) IP Address of front panel Ethernet port. Default shown, user setting only in telnet. (4) MAC Address of the rear panel Ethernet port. Cannot be changed. (5) Mode of rear panel Ethernet port. Static or DHCP user setting. (6) IP Address of rear panel Ethernet port. User setting. (7) Netmask of rear panel Ethernet Port. User setting. (8) Gateway of rear Ethernet port. User setting. (S) Save Settings. Required before changes take place. (r) Restore Setup ‐ Restores last saved setup. (h) Set TX S.N. ‐ Not used (u) Set User ‐ Should be done via remote GUI (t) Set Date /Time ‐ sets transmitter date and time (f) Store Factory ‐ stores the setup in the transmitter and can be recalled using (r) above.
Page 144 6‐8 Section-6 Diagnostics October 28, 2013 Figure 6-5 Telnet Page 2/7 System Control/Status Display shows status of each item that is part of the Transmitter System. Under "Control/Status" 1 ‐ 13 and A ‐ M will correspond to the Multi‐Unit Interface Board LED’s defined in Section 6.3.3 of this manual. Under "System Analog" values are shown as displayed on LCD as well as their corresponding DAC/ADC values. (1) TX ON/OFF ‐ Turns transmitter ON or OFF (2) RF Mute Ctrl ‐ Mutes or unmutes the transmitter (3) Pwr Raise ‐ Raises RF power of transmitter (4) Pwr Lower ‐ Lower RF power of transmitter (5) IPA SW Mode ‐ changes the IPA switching mode between Auto and Manual (6) EXC SW Mode ‐ Changes the exciter switching mode between Auto and Manual (7) IPA Switch ‐ Switches the IPA between A and B side (8) EXC Switch ‐ Switches exciter between A and B (a) FB THD ‐ Adjusts VSWR foldback threshold. DO NOT USE unless instructed by Harris Broadcast Service Engineer (b) PS Ref ‐ Power supply reference DAC value. DO NOT USE Can cause power supply to exceed acceptable voltage levels (t) Test ‐ Not used (c) UPS Ref ‐ Reference power setting of Low Power/UPS Mode. This is mode that is set by grounding J1‐8 of ...
Page 145 FAX 5/10/20/30/40KW 6‐9 October 28, 2013 Figure 6-6 Telnet Page 3/7 Power Block Control/Status Display shows status of each item that is part of each Power Block. In a FAX30/40 pressing (2) will display status and values for power blocks 3 and 4, pressing (1) will switch display back to power blocks 1 and 2. The Status 1 ‐ 6 in the top sections of the screen will correspond to the LED’s on the System Interface Board in each power block. Figure 6-7 Telnet Page 4/7 PA Modules Status/Meters Displays IPA and PA Module Fault status, Current, PA Volts and PA Temp. In a FAX30/40 pressing (2) will display status and values for power blocks 3 and 4, pressing (1) will switch display back to power blocks 1 and 2. Fault status bits are displayed as shown: b0/b1/b2/b3/b4/b5 b0 = PA Overdrive ‐ greater than 25 Watts into module b1 = VSWR Fault ‐ greater than 100 W reflected into module. Depends on frequency, load and phase angle. b2 = Under Voltage Fault ‐ b3 = Overcurrent Fault ‐ Greater than 30 Amps current draw on pallet b4 = Overtemp Fault ‐ faults at 95 C b5 = Module not Present Fault 888‐2720‐001 WARNING: Disconnect primary power prior to servicing. Copyright ©2013, Harris Broadcast...
Page 146 6‐10 Section-6 Diagnostics October 28, 2013 Figure 6-8 Telnet Page 5/7 Fault Log Page 5 displays the contents of the fault log. Each fault will show time and date of occurrence and time and date fault was cleared. (R) Clears the fault log, Up/Down arrows pages through multiple pages. Figure 6-9 Telnet Page 6/7 Calibration Data Page 6 displays stored calibration data for the transmitter. There are no commands available on the page. Figure 6-10 Telnet Page 7/7 Debug Information Page 7 displays debug information for the transmitter. There are no commands available on the page. WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 147: Section-7 Parts List
FAX 5/10/20/30/40KW 7‐1 October 28, 2013 Section-7 Parts List Exploded View 10 kW Power Block Figure 7‐1 and Figure 7‐2 are the Exploded view of the 10 kW power block. The parts given are not an exhaustive parts list but are the field replaceable parts for each assembly and sub‐assembly in the unit. If the need comes up that requires a part not listed, the numbers for that assembly can be given to a Harris Broadcast Representative who can assist in finding the correct part. Table 7-1 FAX High Level Part Numbers Part Number Description 995‐0091‐001G FAX10K Configurable 981‐0136‐002 FAX 10 Basic Transmitter, Primary Power Block 981‐0136‐003 FAX10 Basic Power Block, Secondary 10K for FAX20/30/40 995‐0091‐002G FAX20 Configurable 995‐0091‐003G FAX30 Configurable 995‐0091‐004G FAX40 Configurable 888‐2720‐001 WARNING: Disconnect primary power prior to servicing.
Page 148 7‐2 Section-7 Parts List October 28, 2013 ASSEMBLY, FORMAT XMTR, FAX 10K FM 995 0091 001G ASSEMBLY SYSTEM INTERFACE 901 0234 051G - SYS INTERFACE (PWA) ASSEMBLY, BASIC, PRIMARY 10KW FAX 943 5614 100 - SYS INTERFACE BRACKET (SHEET METAL) 981 0136 002 ASSEMBLY, COMMON COMPONENTS 10KW FAX POWER SUPPLY MODULES PS1-PS7...
Page 149 FAX 5/10/20/30/40KW 7‐3 October 28, 2013 ASSEMBLY, I/O REAR ACCESS 971 0054 010 A9 AC MAINS INPUT TERMINALS BEHIND AC ACCESS PLATE 943 5614 082 943 5614 112 - PLATE, REAR I/O ACCESS (CURRENT VERSIONS) (EARLY VERSIONS) 952 9266 007 - CABLE I/O 614 0977 000 - (6) INSULATOR 354 0852 000 - (5) LUG 6-14AWG 943 5614 350 - TAP WYE 3Ø...
Page 150: Ac Distribution Panel Parts (All Models)
7‐4 Section-7 Parts List October 28, 2013 AC Distribution Panel Parts (All Models) The following tables contain the parts that are not common on all FAX models. A FAX20/30/40 are built from multiple 10 kW Power Blocks and all the components that make those blocks are common. Circuit Breakers for AC Distribution Panels 1‐Phase (Exciter/Auxiliary Section): 606‐1136‐160 2‐Pole,16 Amp, 480 VAC 1 Per Panel (Common to all Panels) 3‐Phase Delta Circuit Breakers: 606‐1180‐000 3‐Pole, 63 Amp, 480 VAC 1 Per Power Block 3‐Phase Wye Circuit Breakers: 606‐1180‐000 4‐Pole, 40 Amp, 400 VAC 1 Per Power Block 1‐Phase Circuit Breakers(FAX5/10/20 Only): 606‐1180‐000 2‐Pole, 50 Amp, 400 VAC 1 Per Power Block Outlet Strips (Common to all Panels): 253‐0253‐000 230 VAC, 10 Amp, 4xC13 253‐0254‐000 120 VAC, 10 Amp, 4x5‐15R FAX20/30/40 Specific Parts The cabinet interface board is part of the Multi‐Unit COntrol panel located in the primary power block. Cabinet Interface Board ‐ 901‐0234‐271G (Part of the Multi‐Unit Control Panel in primary power block) The directional coupler is the same unit for all the FAX20/30/40 transmitters. This coupler provides the samples for the system power detection, RTAC samples and the modulation monitor sample. 971‐0023‐198 3‐1/8" EIA Un‐Flanged 3‐port 54 dB coupling factor WARNING: Disconnect primary power prior to servicing. 888‐2720‐001 Copyright ©2013, Harris Broadcast...
Page 151: Reject Load Parts
FAX 5/10/20/30/40KW 7‐5 October 28, 2013 7.3.1 Reject Load Parts There are two sizes of reject load used in he FAX series transmitters, 6 kW and 12 kW. The external fan control board, fans and internal resistors are all common. Quantities are load size dependant. Table 7-2 Reject Load Common Replaceable Parts Part Number Description 430‐0358‐000 Fan, 48 VDC, 410 CFM, PWM Control, 172 mm 2 or 4 546‐0338‐000 Resistor, 500 ohm, 10%, 300 Watt, Non‐Inductive 10 or 20 901‐0234‐151G Fan Control Board 1 per Load 7.3.2 Splitters/Combiners Table 7-3 FAX20/30/40 Combiners Part Number Description 971‐0054‐012 2‐way Power Combiner 20 kW output, 3 dB Hybrid 971‐0054‐019 2‐way Power Combiner 30 kW output, 4.77 dB Hybrid 971‐0054‐047...
Page 153 Must have a space of 1-3/4” between racks in both the front and back sides Cabinet 1 Cabinet 2 Cabinet 2 Cabinet 1 Top PAB Top PAB Bottom PAB Bottom PAB WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 154 Assemble filler channels to the front and rear of cabinets (3 per side). • From the top maneuver each channel onto hardware. • Tighten hardware until secure. Filler Channel 943-5614-508 Installed Filler Channel (3) Places (Both Sides) WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 155 Flat ......310-0026-000 Split ....... 314-0015-000 Finish Screw Pre-installed Hardware Channel Cover 943-5614-507 (2) Places - Front & Rear Top Bracket 943-5614-509 Finish Screw 2 Places Front & Rear WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 156 Bend back grounding strap in cabinet 2 and fasten to the grounding bar cabinet 1. Grounding Bar Bend Back the Grounding Strap • Position the final horizontal combiner as shown and maneuver into cabinets. WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 157 Install RF conductor assembly that shipped loose with unit. • Insert RF conductor assembly thru cabinet 2 and maneuver around combiner and connect to reject load in front of cabinet 1. Cabinet 1 Cabinet 2 WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 158 Install directional coupler onto the horizontal combiner. • Install RF output line going from the coupler to the top of rack. Coupler RF Line Even Numbers on This Side Coupler WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 159 Fasten the RF connector/bullet to top of rack and connect to the RF output line coming from coupler. • Locate the bag with 10 AC power cables in cabinet 1. • Remove cables from bag and route over to cabinet 2. WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 160 Route the black cables #203 & #204 with receptacles into air duct above transmitter. #203 204 Air Duct White Clamps #9 11 13 15 Brown Black Grey #9 Green WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 161 Route cables 10, 12, 14, & 16 from side of cabinet to bottom power block. • Connect cables to bottom power block’s AC Inlet connectors as shown below. Brown Grey Black #9 Green WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 162 Route the black cables w/ receptacles up to both exciters. • Plug in cable #203 to Exciter A • Plug in cable #204 to Exciter B. Exciter B Cable #204 Exciter A Cable #203 WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 163 Route coax cables up to the directional coupler. Connect cable #103 to J1 Connect cable #104 to J2 Connect cable #105 to J3 #104 to J2 #105 to J3 #103 to J1 WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 164 Cabinet Unification Instructions October 23, 2013 a-12 • Connect Wago connectors with pink wires #217 & #218 together in cabinet 2 as shown. WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 165 Connect Wago connectors with pink wires #210 thru #216 together in cabinet 2. Clamp Cables as shown. W208 W209 W201 W201 #208 209 • Connect W208,W209(FAX40 Only) and W201 as shown above. Ensure coaxes are tight but do not over-tighten. WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 166 October 23, 2013 a-14 • Install blank panel onto front of cabinet 2. • Assemble rear doors on both cabinets. Blank Panel End of cabinet unification instructions. WARNING: Disconnect primary power prior to Servicing. 888-2720-001 Copyright © 2013 Harris Broadcast...
Page 168 Support Contacts: http://harrisbroadcast.com/support eCustomer Portal: http://support.harrisbroadcast.com Trademarks and tradenames are the property of their respective companies. 9800 S Meridian Blvd | Ste 300 | Englewood, CO 80112 U.S.A. ©2013 Harris Broadcast Harris Broadcast is an independent company not affiliated with Harris Corporation...

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Harris Broadcast Flexiva Fax 5kw Technical Manual

Section-1 Introduction

Section-2 Installation

Section-3 Operation

Section-4 Theory

Section-5 Maintenance

Section-6 Diagnostics

Section-7 Parts List

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