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_ (&RPSDFW+3%%6HULHV Operation Manual UHF Digital TV Transmitters ATSC 3.0: 950 to 7600 Watts RMS ATSC 1.0: 1100 to 8800 Watts RMS E-Compact High-Power Series Read before handling the equipment. EC701HP-BB2 EC702HP-BB2 EC703HP-BB2 EC704HP-BB2 EC706HP-BB2 EC708HP-BB2 _ (&RPSDFW+3%%6HULHV 2SHUDWLRQ0DQXDO 8+)'LJLWDO797UDQVPLWWHUV $76&WR:DWWV506 $76&WR:DWWV506 (&RPSDFW+LJK3RZHU6HULHV (&+3%%(&+3%%(&+3%% (&+3%%(&+3%%(&+3%% 5HY5±(186 $OOULJKWVUHVHUYHG +LWDFKL.RNXVDL(OHFWULF&RPDUN//& )HHGLQJ+LOOV5G6RXWKZLFN0$ 3KRQH VDOHV#FRPDUNWYFRP ZZZFRPDUNWYFRP W A R N I N G All rights are reserved to Hitachi Kokusai Electric Comark LLC, thus any reproduction, adaptation, translation or misuse of this Manual without prior written permission is prohibited, except as permitted by copyright laws. _ (&RPSDFW+3%%6HULHV CONTENTS 1. Index CONTENTS 1.Index 2.Abbreviations 3.About this Manual 4.Basic Knowledge Required 5.Structure Section 1 - Care, Warranty, and Service 1.Care and Safety 2.Warranty 3.Technical Assistance Section 2 - Minimum Installation Requirements 1.Introduction 2.Minimum Requirements 2.1. AC Mains - Wire Gauge 2.2. Grounding 2.3. Stability 2.4. Insulation 2.5. Atmospheric Discharge Protection System 2.5.1Lightning rods 2.5.2Protectors 2.6 Air Conditioning 2.6.1Temperature 2.6.2Humidity 2.6.3Cooling Section 3 – E-Compact High-Power Series UHF Digital TV Transmitters 1.Overview 2.Specifications 3.Construction 3.1. EC701HP-BB2 3.2. EC702HP-BB2 3.3. EC703HP-BB2 3.4. EC704HP-BB2 2.1. )&&&RPSOLDQFH…
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Document Reference: MPD-1611291-A USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 2/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 3/94 Table of Content 1 System Overview 9 1.1 General overview .......................................................................... 11 1.2 Block diagram .............................................................................. 12 2 Features Summary 13 2.1 Features Overview ........................................................................ 15 2.2 Input Stream Interfaces ................................................................ 17 2.2.1 ASI/SMPTE Inputs ......................................................................... 17 2.3 Input Stream Management ............................................................ 17 2.3.1 TS CleverSwitch Control ................................................................ 18 2.3.2 Seamless Switching ...................................................................... 19 2.4 Modulation Core ........................................................................... 19 2.5 Test modes operation .................................................................... 19 2.5.1 PRBS sequence ............................................................................. 19 2.5.2 Sinus tone generation ................................................................... 19 2.6 Digital Precorrection ...................................................................... 20 2.6.1 Digital Adaptive Precorrection ......................................................... 22 2.6.2 Manual Digital Pre-correction ............................................................. 25 2.6.3 Adaptive Linear pre-correction for sharp channel filters (in ATSC 1.0) ..... 25 2.7 Output Processing ......................................................................... 26 2.7.1 RF output muting and RF maintain features...................................... 26 2.7.2 Crest Factor Reduction Management ............................................... 27 2.7.3 DAP Operation .............................................................................. 30 2.8 Clock and Synchronization ............................................................. 32 2.8.1 GPS and clock management for VX20-x0x2 ...................................... 32 2.8.2 Warm-up Time ............................................................................. 35 2.8.3 Loss of Reference Signal management (LORS) ................................. 35 2.9 Power Measurements .................................................................... 37 2.10 Automatic Gain Control (AGC) ........................................................ 38 3 EXACT-V2 Rack 39 3.1 EXACT-V2 mechanics .................................................................... 41 3.1.1 Front panel layout ......................................................................... 41 3.1.2 Rear Panel Layout ......................................................................... 42 3.2 Interface characteristics ................................................................ 42 3.3 Front Panel signalization (LEDs description) ..................................... 52 3.4 Power requirements ...................................................................... 53 3.5 Performances and technical characteristics ....................................... 53 3.5.1 General characteristics .................................................................. 53 3.5.2 Control and data Ethernet interfaces ............................................... 53 3.5.3 Serial control interfaces ................................................................. 54 3.5.4 ASI inputs / output and MPEG-TS processing .................................... 55 3.5.5 Digital modulation ......................................................................... 56 3.5.6 Clock synchronization .................................................................... 57 3.5.7 RF and monitoring outputs ............................................................. 59 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 4/94 3.5.8 Digital precorrection ...................................................................... 60 3.5.9 Power level measurement inputs and AGC ........................................ 61 3.5.10 Dry contacts ............................................................................... 61 3.6 Conformity with EC Directive .......................................................... 62 4 EXACT-V2 Installation 63 4.1 Unpack the Unit ............................................................................ 65 4.2 Installation and Recommendations .................................................. 65 4.2.1 Temperature alarms ...................................................................... 66 4.2.2 Cooling methods ........................................................................... 66 4.3 Wiring and Powering on.................................................................. 66 4.4 Initial Configuration ....................................................................... 67 5 Operation 71 5.1 Operation Generalities ................................................................... 73 5.1.1 Local Operation ............................................................................. 73 5.1.2 Remote Operation ......................................................................... 73 5.2 Embedded Web GUI Description ...................................................... 74 5.2.1 Requirements ............................................................................... 74 5.2.2 Connection to EXACT-V2 ................................................................ 74 5.2.3 General Overview .......................................................................... 75 5.2.4 Setti…
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104 Feeding Hills Road Southwick, MA 01077 – USA Tel: (413) 998-1100, Fax. (413) 998-1194 www.comarktv.com 2/3/2021 Compliance Testing LLC 1724 S. Nevada Way Mesa, AZ 85204 RE: CONFIDENTIALITY REQUEST FOR the Model EC-706HP-BB2 FCC ID LYIEC706HPBB2 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the following documents required to be submitted with this application be permanently withheld from public review. • Schematics • Parts List • Internal Photos • Block Diagram These documents contain detailed system and equipment descriptions and related information about the product, which manufacturer/applicant considers to be proprietary, confidential, and a custom design and otherwise, would not release to the general public. Since this design is a basis from which future technological products will evolve, manufacturer/applicant feels that this information would be of benefit to its competitors, and that the disclosure of the information in these documents would give our competitors an unfair advantage in the market. These are professional broadcast transmitters that are permanently installed in television broadcast facilities, and as such are not readily accessible to the public. These information in these documents are not part of the user manual, and are supplied only if necessary, in compliance with the requirements of Article 7, “ DISCLOSURE AND USE OF CONFIDENTIAL OR PROPRIETARY INFORMATION”, of our standard terms and conditions for sale. This article is provided as an exhibit to this submission. Please contact me if there is any information you may need. Sincerely, Thomas R. Barbeau Vice President of Engineering 104 Feeding Hills Road Southwick, MA 01077 – USA Tel: (413) 998-1100, Fax. (413) 998-1194 www.comarktv.com Hitachi Kokusai Electric Comark, LLC
Figure 1. EC706HP-BB2 Front View Figure 2. EC706HP-BB2 Rear View Figure 3. Exact V2 Exciter Front View Figure 4. Exact V2 Exciter Rear View Figure 5. Transmitter Control Module Front View Figure 6. Transmitter Control Module Rear View
FCC ID Label for EC-701HPBB2 FCC ID Label Location
FCC ID Label for EC-702HPBB2 FCC ID Label Location
FCC ID Label for EC-703HPBB2 FCC ID Label Location
FCC ID Label for EC-704HPBB2 FCC ID Label Location
FCC ID Label for EC-706HPBB2 FCC ID Label Location
Operational Description: The EC-706HP-BB2 digital transmitter system is an up to 6600W average power (when using ATSC 1.0 8VSB modulation), 5700W average power (when using ATSC 3.0 COFDM modulation) that consists of a Hitachi Kokusai Electric Comark Exact V2 digital exciter, Hitachi Kokusai Electric Linear CM-8001 Drive controller, six (6) GV40159 Amplifiers, a passive hybrid combining system, a 40063 Low pass filter, and a Com-Tech TF6D170C 6 Pole Mask Filter (or equivalent or more stringent filter). This system is used to provide an ATSC 1.0 or ATSC 3.0 modulated signal over the UHF channels 14 through 36 in a manner consistent with FCC Part 74.
REV A — 25 April, 2019 1 Technical Service Bulletin 190425 RF Tuning Procedure for Transmitters Using Exact V2 Exciter The Comark Exact exciter has a very capable / powerful non-linear digital pre-corrector con- tained in it. Knowing how to set up and properly adjust this corrector is key to the best perfor- mance and safe operation of a transmitter. Described below is a basic guide to allow a user to accomplish the proper tuning adjustment of this corrector. 1. Overview Panel First insure that the transmitter is properly connected to the output mask filter and load. Ensure that you have RF output couplers in the path before and after the mask filter for transmitter feed- back to the Exact exciter. Log into the Exact Exciter’s webpage and configure the correct output modulation type, bandwidth, and frequency in the RF Output Parameters tab. 2. Basic Setup On the rear panel there are 2 SMA connectors labeled FBA (Feed Back Amplifier), and FBF (Feed Back Filter). The FBA signal should come from the transmitter output sample before the mask filter. This is used for non-linear (shoulder) correction. The FBF signal should come from the transmitter output sample after the mask filter. This is used for linear (SNR) correction. These signal levels should be in the range of -15 to -5 dBm. 3. Connecting Feedback Signals Fig. 1 Rear panel REV A — 25 April, 2019 2 Technical Service Bulletin 190425 4. Checking the Feedback Signals Levels Once the feedback signals are connected, the user can check, in the Exact Precorrections Menu, that they are properly wired, synchronized, and that their power levels are in accordance with the specifications. Fig. 2 Exact Precorrections screen 5. Connecting Feedback Signals The only parameters that need to be set before launching the DAP are Crest Factor, Protection Clipping, and Timer (Correction Time). 6. Crest Factor Setting Since the Exact is performing a clever PAPR reduction, less destructive for the signal compared to the amplifier, the Crest Factor has to be reduced as much as possible by Exact instead of the amplifier. As a tool, the Crest Factor value monitored from the amplifier feedback signal can be used as a guide / starting point. Once the transmitter is at full power and before correction is run for the first time, the crest factor / PAPR can be read in the FBA Measurements section of the Corrections page. This is the Crest Factor / PAPR that the Exact is measuring on the transmitter output without correction. The recommended starting point is to set the Crest Factor setting only about 1dB higher than the value which is monitored in the FBA Measurements sec- tion. This should not be set to what you believe the Crest Factor / PAPR should be when you are finished correcting or as referenced by any other measurement means. 7. Protection Clipping Setting Protection Clipping is just what the name implies. It is the maximum level of PAPR allowed out of the exciter when correction is run. Because the DAP corrector simply tries to make the feed- back signal as close to perfect as possible it essentially knows no limits of how far it can stretch peaks unless told otherwise. If this is not kept to a “reasonable” level it could result in amplifier damage. A good guideline is to keep this only about 3dB above the crest factor setting. Once REV A — 25 April, 2019 3 Technical Service Bulletin 190425 Once the Crest Factor and Protection Clipping have been set, the DAP can be launched in the Precorrection Menu, using one of the following modes: “Single” mode (recommended), where the DAP will be automatically stopped after a user config- urable “Timer” value. “Continuous” mode, where the DAP works continuously until the user exit the continuous mode 7. Protection Clipping Setting cont. correction has run, it should be adjusted down by 1dB from where it is set to see if there is a performance impact. If not, then leave it alone. It should only be carefully increased in small increments to see if increasing has any positive effect on signal performance. Essentially, it should be adjusted only as high as necessary to achieve acceptable performance. Fig. 3 Non Linear Precorrections screen followed by the RF Output Parameters screen 8. Timer Setting In the Precorrections menu if “Single” mode is selected the amount of time the corrector will run can be adjusted. In most cases 3 to 5 Minutes is sufficient for good performance of the non-lin- ear corrector. By not setting the value too low or short, the shoulder performance may not reach its best performance level as the corrector has not run enough iterations of correction to linear- ize the transmitter optimally. By setting it excessively high or long, the transmitter performance will have already reached the optimum performance before the corrector has stopped. Setting it too long can potentially have ill effects in that the shoulders could become “over corrected” and not be at optimum performance. 9. Crest Factor Parameter Setting Fine Tuning After a first run of DAP (in “single” mode with a timer value set), it is usually possible to fine tune the Crest Factor setting in order to improve the achieved shoulders performance. This change should be made in small increments (0.1 to 0.3dB) either up or down from the original set value while observing the shoulder performance. If the performance gets better, try going a little more in that direction until the performance starts to degrade then back up a bit to the best performance. Once this is done, reset the correction, and re-run the DAP. This should yield equal or perhaps slightly better performance. The corrector is now optimally adjusted. REV A — 25 April, 2019 4 Technical Service Bulletin 190425 10. Crest Factor Optimization Parameter Setting For a given “Crest Factor”, the “Crest Factor Optimization” enhances the signal shoulders. Find- ing the best value for this parameter allows the user to gain performance on the shoulders of the signal, thus optimizing the amplifi…
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P2060011_FCC_Part 74_Rev 1.0 Page 1 of 23 Test Report Prepared for: Hitachi Kokusai Electric Comark Models: EC-701HP-BB2 EC-702HP-BB2 EC-703HP-BB2 EC-704HP-BB2 EC-706HP-BB2 Description: Broadcast Transmitter FCC ID: LYIEC706HPBB2 To FCC Part 74 Date of Issue: December 12, 2020 On the behalf of the applicant: Hitachi Kokusai Electric Comark 104 Feeding Hills Rd Southwick, MA 0107701077 Attention of: Thomas Barbeau, VP of Engineering Ph: (413)998-1124 E-Mail: [email protected] Prepared By Compliance Testing, LLC 1724 S. Nevada Way Mesa, AZ 85204 (480) 926-3100 phone / (480) 926-3598 fax www.compliancetesting.com Project No: p2060011 Greg Corbin Project Test Engineer This report may not be reproduced, except in full, without written permission from Compliance Testing. All results contained herein relate only to the sample tested. P2060011_FCC_Part 74_Rev 2.0 Page 2 of 23 Test Report Revision History Revision Date Revised By Reason for Revision 1.0 December 9, 2020 Greg Corbin Original Document 2.0 January 29, 2021 Greg Corbin Corrected typo for rule section in test summary table on page 8 P2060011_FCC_Part 74_Rev 2.0 Page 3 of 23 Table of Contents Description Page Standard Test Conditions and Engineering Practices 5 Test Result Summary 8 Power Limitations (Output Power) 9 Emission Mask 11 Occupied Bandwidth 13 Conducted Spurious Emissions 15 Field Strength of Spurious Radiation 19 Frequency Stability (Temperature Variation) 20 Measurement Uncertainty 22 Test Equipment Utilized 23 P2060011_FCC_Part 74_Rev 2.0 Page 4 of 23 ANAB Compliance Testing, LLC, has been accredited in accordance with the recognized International Standard ISO/IEC 17025:2017. This accreditation demonstrates technical competence for a defined scope and the operation of a laboratory quality management system (refer to the joint ISO-ILAC-IAF Communiqué dated January 2009). The tests results contained within this test report all fall within our scope of accreditation, unless noted below. Please refer to http://www.compliancetesting.com/labscope.html for current scope of accreditation. Testing Certificate Number: 2152.01 FCC Site Reg. #349717 IC Site Reg. #2044A-2 Non-accredited tests contained in this report: N/A P2060011_FCC_Part 74_Rev 2.0 Page 5 of 23 Test and Measurement Data All tests and measurement data shown were performed in accordance with FCC Rules and Regulations, Volume II, Part 2, Subpart J, Sections 2.947, 2.1033(c), 2.1041, 2.1046, 2.1047, 2.1049, 2.1051, 2.1053, 2.1055, 2.1057, and the following individual Parts: FCC Part 74. Standard Test Conditions and Engineering Practices Except as noted herein, the following conditions and procedures were observed during the testing. In accordance with ANSI/TIA 603C, and unless otherwise indicated in the specific measurement results, the ambient temperature of the actual EUT was maintained within the range of 10° to 40°C (50° to 104°F) unless the particular equipment requirements specified testing …
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104 Feeding Hills Rd · Southwick · United States
| # | Rule Parts | Frequency Range | Power Output | Emission | Tolerance |
|---|---|---|---|---|---|
| 1 | 74 | 470 MHz - 608 MHz | 1100 W | 5M50C7W | 8 Hz |

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