FCC ID: LYIEC702MP 215 Watts ATSC3.0 / 225 Watts ATSC1.0 Transmitter System

 

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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 Table of Content 9 13 1.1 1.2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 1 System Overview General overview .......................................................................... 11 Block diagram .............................................................................. 12 2 Features Summary 2.2.1 2.5.1 2.5.2 2.3.1 2.3.2 Features Overview ........................................................................ 15 Input Stream Interfaces ................................................................ 17 ASI/SMPTE Inputs ......................................................................... 17 Input Stream Management ............................................................ 17 TS CleverSwitch Control ................................................................ 18 Seamless Switching ...................................................................... 19 Modulation Core ........................................................................... 19 Test modes operation .................................................................... 19 PRBS sequence ............................................................................. 19 Sinus tone generation ................................................................... 19 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 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 Clock and Synchronization ............................................................. 32 2.8.1 GPS and clock management for VX20-x0x2 ...................................... 32 2.8.2 Warm-up Time ............................................................................. 35 Loss of Reference Signal management (LORS) ................................. 35 2.8.3 Power Measurements .................................................................... 37 Automatic Gain Control (AGC) ........................................................ 38 2.9 2.10 3 EXACT-V2 Rack 39 3.1 3.2 3.3 3.4 3.5 3.1.1 3.1.2 EXACT-V2 mechanics .................................................................... 41 Front panel layout ......................................................................... 41 Rear Panel Layout ......................................................................... 42 Interface characteristics ................................................................ 42 Front Panel signalization (LEDs description) ..................................... 52 Power requirements ...................................................................... 53 Performances and technical characteristics ....................................... 53 3.5.1 General characteristics .................................................................. 53 3.5.2 Control and data Ethernet interfaces ............................................... 53 Serial control interfaces ................................................................. 54 3.5.3 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 3/10/2017 MPD-1611291-A Page 3/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 63 71 3.5.8 Digital precorrection ...................................................................... 60 3.5.9 Power level measurement inputs and AGC ........................................ 61 Dry contacts ............................................................................... 61 3.5.10 Conformity with EC Directive .......................................................... 62 3.6 4 EXACT-V2 Installation 4.1 4.2 Unpack the Unit ............................................................................ 65 Installation and Recommendations .................................................. 65 Temperature alarms ...................................................................... 66 4.2.1 4.2.2 Cooling methods ........................................................................... 66 Wiring and Powering on.................................................................. 66 Initial Configuration ....................................................................... 67 4.3 4.4 5 Operation 5.1 5.2 5.1.1 5.1.2 Operation Generalities ................................................................... 73 Local Operation ............................................................................. 73 Remote Operation ......................................................................... 73 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 Settings Tab ................................................................................. 76 5.2.5 Monitoring Tab .............................................................................. 78 5.2.6 Log File ........................................................................................ 79 Front Panel Menu Description .......................................................... 79 5.3 6 Maintenance & Troubleshooting 81 6.1 6.2 6.3 6.4 Versions management.................................................................... 83 Software updates .......................................................................... 83 Licence key management ............................................................... 84 Troubleshooting of the exciter ......................................................... 84 6.4.1 LED Check .................................................................................... 84 6.4.2 Contact the technical support .......................................................... 85 Appendix A GPS Installation Recommendations 87 Appendix B Example of GPS Antenna 91 3/10/2017 MPD-1611291-A Page 4/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Revision sheet Document Number Revision Date Version Comments MPD-1611291 A Nov 2016 S100 Document creation ATSC 1.0 Version

(ATSC 3.0 Ready) MPD-1611291 B Feb 2017 S100 Revised Warning Content warning This document contains preliminary information about some of the products in the Hitachi-Comark family. Hitachi-Comark maintains the right to make changes to the documentation at any time without prior notice in order to improve, design and supply the best possible product. Copy warning This document includes some confidential information. Its usage is limited to the owners of the product that it is relevant to. It cannot be copied, modified, or translated into another language without prior written authorization from Hitachi-

Comark. 3/10/2017 MPD-1611291-A Page 5/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter About this manual Intended audience This user manual has been written for those who have to use, configure and install the product. Some chapters require some prerequisite knowledge in electronics and especially in broadcast technologies and standards. Product described The following products are described in this user manual:

EXACT-V2 EXACT-V2-20dB Commercial references and available options Product ref. Description EXACT-V2 EXACT-V2-20dB ATSC rack modulator with UHF/VHF* output, DAP and onboard GPS Optional +20dBm, output, DAP and onboard GPS EXACT-ATSC 3 VP EXACT-ALP3 ATSC 3.0 software license (Single PLP) ALP software license (3.0)

*Specify at the time of order: UHF, VHF Band 3, or VHF Band I Document structure :

Chapter 1 System Overview This chapter gives an overview of the product. Chapter 2 Features Summary This chapter describes the features found in the product. Chapter 3 EXACT-V2 rack This chapter describes the mechanics, characteristics and performances of the product. Chapter 4 Module Installation This chapter explains how to install the product. Chapter 5 Operations This chapter explains how to basically operate the product. Chapter 6 Maintenance and Troubleshooting This chapter gives recommendation on how to maintain the product and how to perform first level Troubleshooting in the event of technical issues. 3/10/2017 MPD-1611291-A Page 6/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Associated publications The reader of this document could improve their understanding of the product and its effective use by reading the following documents:

[A1]

ATSC standards http://www.atsc.org/standards.html A/53, A/54

[A2]

[A3]

[A4]

DVB Measurements www.dvb.org ATSC Compliance http://www.atsc.org/standards.html SFN Network in ATSC http://www.atsc.org/standards.html A/111 A/64 ETSI TR 101 290 v1.2.1 Table 1: Relevant standards for ATSC

[A6]

Physical Layer Protocol http://atsc.org/standards/atsc-3-0-standards/

A/322

[A7]

Link-Layer Protocol http://atsc.org/standards/atsc-3-0-standards/

A/330 Table 2: Relevant standards for ATSC 3.0

[D1]

DVB ASI http://atsc.org/standards/atsc-3-0-standards/

EN50083-9, ETSI TR101 891 v1.1.1

[D2]

MPEG-2 TS Standard http://www.iso.org ISO/IEC 13818-1

[I1]

[I2]

[I3]

[I4]

[I5]

[I6]

Table 3: Other standards RFC-791 RFC-768 IP www.ietf.org UDP www.ietf.org RTP & MPEG/RTR www.ietf.org IP Multicast www.ietf.org Ethernet http://www.ieee802.org/3/

Multicast protocol IGMP RFC-2236 / RFC-3376 www.ietf.org RFC-1889 / RFC-2250 IEEE-802.3 RFC-2365 Table 4: Relevant standards for IP 3/10/2017 MPD-1611291-A Page 7/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 8/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 1 System Overview 3/10/2017 MPD-1611291-A Page 9/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 10/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 1.1 General overview EXACT-V2 exciter has been especially designed to support, in addition to ATSC 1.0, the complex ATSC 3.0 modulation scheme, including Digital Adaptive Pre-correction (DAP) circuits and all required mechanisms to feed transmitters with flexible and highly secured input stream formats. This ready-to-use high-end 1RU exciter offers the best-

in-class performance for broadcasters that want to launch ATSC 1.0 or ATSC 3.0 products with a high-performing, secured solution. Enabling users to migrate ATSC 3.0, reusing and recycling their existing transmission system, this unique exciter significantly reduces capital expenditure (CAPEX) costs. In order to bring the highest performance, EXACT-V2 integrates up-to-date FPGA technology and sophisticated digital signal processing algorithms, especially for the modulation and the output filtering processes. With this in mind, broadcasters are able to take full advantage of ATSC 3.0 technology. The clock system has been carefully designed to reach a very low phase noise and it achieves the flexibility required to operate with different synchronization schemes. EXACT-V2 includes a high-stability OCXO oscillator and an on-board GPS receiver. It generates a fully modulated analogue signal and includes all necessary clock &

synchronization features for high quality ATSC 3.0 synchronization, especially for SFN networks. Fully controlled via a user friendly WEB GUI and via SNMP (optional), EXACT-V2 also features some very unique functionalities such as a Power Measurement Unit

(measuring in real-time the forward and reflected power levels), the TX power ON/OFF control and the Automatic Gain Control (AGC) mechanism. EXACT-V2 Digital Adaptive Pre-correction (Digital Adaptive Processing) algorithm, permits transmitter operation very close to the saturation limit with unequalled RF signal performance and allows for significant gain in transmitter Power Efficiency. This generates significant savings in operating expenses (OPEX). Three Ethernet control ports are available, which provides the opportunity to upgrade a legacy transmitter configuration into a fully IP-controlled solution!

3/10/2017 MPD-1611291-A Page 11/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 1.2 Block diagram The generic block diagram is described below:

Figure 1: EXACT-V2 functional block diagram EXACT-V2 features two ASI/SMPTE input streams that can be processed in parallel for stream redundancy (Primary/Secondary). Four IP streaming (Gigabit) input/output ports are reserved for ATSC 3.0 mode. The clock and synchronization process has been carefully designed to reach the best performance for all of the supported standards. 1PPS and 10MHz external reference signals are available to reach a higher frequency accuracy. An on-board GPS receiver is also available and may be used for this purpose. Regarding the control and management of EXACT-V2, an embedded web server provides a user-friendly graphical user interface (GUI) that that can be accessed by any web browser. Three IP control ports are available. Two connectors are provided for the feedback inputs from the amplifier (FBA_IN) and from the filter (FBF_IN). These inputs are used for the Digital Adaptive Precorrection

(DAP). A serial port is also available for complete transmitter control and monitoring integration within the modulators Web GUI. 3/10/2017 MPD-1611291-A Page 12/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2 Features Summary 3/10/2017 MPD-1611291-A Page 13/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 14/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.1 Features Overview Input Stream Management ATSC 1.0 :

ASI: 188 or 204 byte format with RS decoding TS/ASI (ETSI EN o 2x ASI/SMPTE 310M Inputs :

102 773 - [D1] & [D2]) SMPTE 310M: 188 byte format o 1x ASI Output (188 byte) Stream output type: TS/ASI o Redundancy management :

TS CleverSwitch: stream switching between Main and Secondary input See TS CleverSwitch control o Bit rate adaptation & PCR re-stamping o Null packet deletion ATSC framing and channel encoding o 8-VSB modulation core o Virtual Channel Table Update ATSC 3.0 : (Available from the S110 firmware version) Digital Adaptive Non-Linear Precorrection circuits o Flexible operating modes: STATIC (EDIT), SINGLE, SURVEY or CONTINUOUS o RF feedback signals sampled in real-time after Power Amplifier Digital Linear Precorrection circuits o Manual mode o Adaptive mode : STATIC (EDIT) or SINGLE o RF feedback signals sampled in real-time after RF filter PAPR reduction system and protection clipping RF output o Frequency band: UHF and VHF band o Bandwidth: 6MHz o Main output (0dBm or optional +20dBm) and monitoring output (-20dB relative to main output) 3/10/2017 MPD-1611291-A Page 15/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter o Manual mute and programmable mute condition on LORS o RF maintain function on stream input loss Clock and synchronization signal management o External reference sources: 1PPS, 10MHz inputs o Onboard GPS (VX20-x0x2) o 10 MHz reference output o LORS management Measurement/Monitoring o ATSC1.0: MER and shoulder level monitoring (indicative) o 2 dedicated inputs for forward and reflected powers measurement AGC feature o Capacity to automatically adjust the output power to ensure a stable system output power o Feedback input using direct adapted RF signal from amplifier output (-

10dBm) or VDC signal from external power sensor Control and Management o Control and monitoring via web based GUI o LCD front panel for main features control and monitoring o 4 front panel status LEDs o Alarm relays o 1+1 Redundacy proprietary management o 2 Ethernet control ports on rear panel o 1 Ethernet control ports on front panel Transmitter Environment Interface o Full control/monitoring using seamless Web GUI o Based on Hitachi-Comark serial protocol and integrated serial port Other o 110-240 VAC o 1RU rack form factor Note: Availability of features depends on software release version.

(Please refer to the product release notes). 3/10/2017 MPD-1611291-A Page 16/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.2 Input Stream Interfaces 2.2.1 ASI/SMPTE Inputs The unit offers 2 ASI/SMPTE inputs compliant either with DVB-ASI ([D1] & [D2]) or with SMPTE 310M. They can be used either in single or redundant mode. 188 or 204 byte packets without RS coding and 204 byte packets with RS coding are supported when used in ASI mode. If 204 byte packets including RS coding are provided, then the RS error checking and correction are performed. Both ASI Packet mode and Burst mode are supported. When used in SMPTE 310M mode, only 188-byte format is supported. Input Equalizer Each input has an equalizer that can be turned ON or OFF. This equalizer works well to equalize cable length attenuation but does not perform as well if the input cable is mismatched. If this is the case, and in the case of SMPTE 310M input mode being used, the Equalizer should be turned off. 2.3 Input Stream Management The Stream Management consists in routing the incoming data from the ASI/SMPTE or the Ethernet interface towards the modulation core. This part can manage all types of interfaces and it also provides the TS output stream for the ASI output interface. The Stream Management process might operate additional basic functions such as data monitoring, data extraction, bit-rate adaptation and routing. Bit-rate adaptation: When using an external clock reference, the global clock synchronization might be plesiochronous (i.e. small clock deviance between the multiplexer and the modulator reference). In that case, it is recommended to enable the bit rate adaptation. When this mode is activated, the unit discards or inserts null packets in order to accurately adapt the TS input bit-rate to the bit-rate defined by the selected ATSC mode. PCR re-stamping is then executed accordingly. At last, an ASI output has been designed for copying either one of the input streams

(ASI1, ASI2 or the TS from the active IP input) on the Active_Stream. 3/10/2017 MPD-1611291-A Page 17/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.3.1 TS CleverSwitch Control CleverSwitch is a flexible input redundancy management mechanism designed by Hitachi-Comark. It is enabled by default and can be manually disabled or enabled. Figure 2: TS CleverSwitch block diagram CleverSwitch is based on a programmable consecutive error threshold. Once it is reached, the stream selection switches automatically from the primary input to the secondary. When the valid packets threshold is reached, the stream input switches back to the primary. In 188 byte format, the switch criteria only considers the number of consecutive valid and error packets (0x47 sync detection), whereas in 204 byte mode, it also uses the RS errors. The switch decision is implemented only on the primary input. The switch-back is manual or automatic in case of secondary signal failure. 3/10/2017 MPD-1611291-A Page 18/94 In ATSC 1.0:

VCT (Virtual Channel Table) updates allows the user to change the major channel number and carrier frequency. In ATSC 3.0:

(Available from the S110 firmware version) USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.3.2 Seamless Switching The switching (and switching back) performed by the TS CleverSwitch between the primary and the secondary stream is not expected to be seamless. However, if the exact same data stream is present on both inputs (Primary & Secondary) then the modulator performs seamless switching between inputs. Switching is made on a packet basis. 2.4 Modulation Core The modulator is fed by the active TS stream coming out of the CleverSwitch. It then delivers IQ samples towards the Digital Pre-corrector. From S110 version, it will support both ATSC 1.0 and ATSC 3.0 standards in the same firmware. The user just selects the desired standard using a simple command. 2.5 Test modes operation 2.5.1 PRBS sequence A PRBS sequence can be internally generated and inserted at the input of the modulator instead of an external MPEG-TS or IP Packets. The PRBS polynomial coefficients are configurable. 2.5.2 Sinus tone generation Two sinus tone modes are available: sinus and +6dB Boosted sinus. In these modes, the output RF signal is replaced by a simple sinus wave at the RF frequency. The boosted mode allows phase noise measurement without the requirement of an external amplifier. Sinus tone generation should only be used if the exciter is being bench tested

(ie. not connected to the transmitter). Note: Use of either sinus tone might damage the power amplifier. 3/10/2017 MPD-1611291-A Page 19/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.6 Digital Precorrection The digital pre-correction feature is available for both ATSC 1.0 and ATSC 3.0 signal waveforms. The digital precorrection feature consists of two types of correction:

o Linear precorrection for compensating the distortion due to the channel o Non-linear precorrection in order to cope with the power amplifier filter distortion Digital precorrection can be:

adaptive: running automatically thanks to an internal (DAP) algorithm manual: curves are set via TuneCast software (using IP connection) The EXACT-V2 product integrates both Linear and Non-Linear Digital Adaptive Precorrection, as well as Linear manual precorrection. Figure 3: Linear & Non-Linear Precorrection methods 3/10/2017 MPD-1611291-A Page 20/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter The use of adaptive precorrection is generally preferred not only in order to reach higher performance and efficiency, but also in order to save on technician time. However, when several RF signals are combined together (adjacent channels), the use of Linear DAP is not possible because the feedback signal is then a combined spectrum of several channels. In that case a manual Linear precorrection is needed. Figure 4: Linear DAP typical use-case Figure 5: Manual Linear Precorrection use-case Combined filter 3/10/2017 MPD-1611291-A Page 21/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.6.1 Digital Adaptive Precorrection The Digital Adaptive Precorrection (DAP) block is illustrated here below. Figure 6: DAP integration block diagram The DAP function is composed of Non-Linear and Linear Precorrection and a dedicated down-converter. The down-converter receives the signal feedback after the external amplifier (FBA_In) and after the RF filter (FBF_In). Then, a particular algorithm processes the digital IQ samples to reduce the signal distortions at the transmitter output. To monitor the DAP process several statuses are available:

MER indicative measure PAPR indicative measure Measured left and right shoulder levels DAP elapsed time DAP status: Active, Stopped by user, Stopped by timer, Failed 2.6.1.1 Non-Linear Adaptive Precorrection EXACT-V2 performs non-linear precorrection over a 75 MHz bandwidth. The purpose of non-linear precorrection is to correct the distortion from the power amplifier. With the feedback from the output amplifier, an adaptive non-linear precorrection should automatically find the best precorrection and follow the variations of the amplifier characteristics. Four operating modes are available:

STATIC (EDIT) mode: The DAP is disabled. The user can load a previous DAP configuration to be applied to the modulator. 3/10/2017 MPD-1611291-A Page 22/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter SINGLE DAP: The DAP process is manually started and is stopped either by a timer value (user configurable) or manually stopped. Figure 7: Single DAP mode operation SURVEY DAP: In this mode, the DAP process is started as the Single DAP mode. Once the timer is reached, then the DAP process can be automatically restarted if a shoulder or MER deviation is detected (user configurable). Figure 8: Survey DAP mode operation 3/10/2017 MPD-1611291-A Page 23/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter CONTINUOUS DAP: The DAP works continuously until the user exits continuous mode. Figure 9: Continuous DAP mode operation 2.6.1.2 Linear Adaptive Precorrection The purpose of Linear precorrection is to correct the distortion in amplitude and in group delay of the output filter. The precorrector is based on a complex FIR filter which can correct up to 3dB (range -3dB to 3dB) in amplitude and up to 3s (range 0 to 3s) in group delay. With the feedback after the output filter, an adaptive linear precorrection should automatically find the correct precorrection curve in a few minutes. Two operating modes are possible:

STATIC (MANUAL EDIT) mode: The DAP is disabled. The user can load a previous DAP configuration to be applied to the modulator or can edit the precorrection curves manually. SINGLE mode: The user starts the adaptive precorrection manually. The adaptive precorrection process is stopped if the timeout value has been reached or if the user stops the process manually. 3/10/2017 MPD-1611291-A Page 24/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.6.2 Manual Digital Pre-correction In addition to digital adaptive precorrection, EXACT-V2 also performs manual linear precorrection. Using the MANUAL EDIT mode, both amplitude and phase corrections are performed over the full spectrum of the signal. For this purpose, a table of 32 points can be loaded in the modulator with the Set Linear Curves command. The table defines the amplitude and the phase precorrection that will be applied on the spectrum. For each point, a correction of 3 dB can be defined for the amplitude and 500 ns for the phase. The 32 points are equally spaced over the useful spectrum. The module itself then computes the correction to each carrier accordingly. 6 MHz Useful bandwidth 5.71 MHz Frequency spacing between 184 KHz 2 consecutive points Table 2: Linear precorrection - frequency spacing Note: Using the Set Linear Curves command, the processing time required by the module (for computing the corresponding coefficients) can be long. It is therefore recommended to use the busy flag (available in Get Linear Status command) before any further module request, or even better: the command Set Linear Coefficients can be used instead in order to directly load the coefficients. 2.6.3 Adaptive Linear pre-correction for sharp channel filters (in ATSC 1.0) With specific, sharp tuned filters, the EXACT-V2 Linear DAP algorithm could fail. Generally, the complexity of the channel filter is due to the fact that this filter is so tight. The compensation of such filtering requires a high level digital filter algorithm. The channel filter is so tight that DAP synchronization mechanisms cannot stay locked after a few iterations. Hitachi-Comark has developed a dedicated method to improve the Linear precorrection for sharp filters. An additional digital filter process located after the original Linear DAP, known as the Sharp Filter Profile can be activated. This filter can be configured in the Web GUI in the Settings/Precorrections screen:

3/10/2017 MPD-1611291-A Page 25/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Figure 10: Sharp Filter Profile menu 2.7 Output Processing The nominal output level of the main output RF Out is 0 dBm for the standard exciter and 20dBm for the exciter with optional preamp. An attenuation between 0 and 17 dB per increment of 0.1 dB can be set. In addition, an offset gain between -1 dB and + 1 dB per increment of 0.1 dB can be set. If needed, the output spectrum can be reversed. A copy of the main signal is available on the RF Monitor. This output signal is the same as the main "RF Out" signal but with a lower level (-20dB for the 0dBm exciter, and -43dB for exciter with optional +20dBm internal preamp). 2.7.1 RF output muting and RF maintain features The output can be muted either by the user or automatically in some conditions. The un-mute is pre-configured to progressive (2 seconds). The mute function is available for both ATSC standards. Mute Mode Manually set Mute cases & conditions in ATSC Manual Mute Starting Delay (after a boot) Warm-up Time (before 10MHz regulation starts) Configurable mute conditions Loss of Reference TimeOut (LORS) see LORS Management Table 3: Mute cases and configurable mute conditions RF Maintain feature:

3/10/2017 MPD-1611291-A Page 26/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter The RF Maintain feature consists in keeping an RF signal presence out of the modulator in order to allow a constant power at the modulator RF output during an input stream error (the function RF Maintain on Input Stream Error shall then be enabled). The overall objective is to avoid any RF signal interruption at the output of the modulator for protecting the amplifier. When the RF maintain feature is selected, specific data is not broadcasted during the switching time from one input stream to another. A PRBS-like signal is used to maintain the original RF signal and RF power level. Thus the broadcasted signal cannot be decoded by any receiver. 2.7.2 Crest Factor Reduction Management PAPR (Peak to Average Power Ratio) issues are associated with high power peaks present in the signal. By correctly managing PAPR reduction (Crest Factor reduction), the user will be able to avoid high power peaks from the modulator and so increase the output power level from the amplifier. It will then allow the best coverage for a given transmission site. However, this PAPR reduction feature will decrease MER performance as well as shoulder levels. It must be used carefully after studying the following explanations. The PAPR solution uses two clipping modules for the best efficiency. Figure shows the location of the two modules as well as the user parameters. Figure 11: PAPR block diagram 2.7.2.1 Crest Factor Parameter In order to reduce these peaks and avoid damage to the amplifier, the exciter uses a crest factor parameter. It is used to set the clipping level of the signal. The range is 3/10/2017 MPD-1611291-A Page 27/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter from 8dB to 20dB. The default value is 10 dB, meaning that a light crest factor reduction is performed. The following figures display the Crest Factor parameter impact on a signal:

Crest Factor setting = 20dB

(No reduction) Without any crest factor reduction, the PAPR is 14.4dB Crest Factor setting = 11dB After the adjustment, PAPR is 10.8dB Note: In the screenshots above, the measurements are made using the <RF> value because the crest factor limit is fixed in the modulator using the RF value. Please note that some equipment may consider the <ENV> (Envelope) value, which is also commonly used and is about 3db less. 3/10/2017 MPD-1611291-A Page 28/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.7.2.2 Crest Factor Optimization Parameter In order to allow the best amplifier efficiency a Crest Factor Optimization parameter has also been added. It is active when the crest factor reduction is enabled (value 0). For a given Crest Factor, the Crest Factor Optimization enhances the signal shoulders. Finding the best value for this parameter allows the user to gain dB on the shoulders of the signal, thus optimizing the amplifier power. This shoulder optimization involves a limited reduction in MER performance. That is why the user must find the best trade-off for the best efficiency. This parameter can vary in a range from 0 to 255 (no unit). Figure shows the variation of the shoulder level and the MER for different parameter values at a given crest factor. When the Crest Factor Optimization parameter is increased, the shoulder level becomes better (from -33dBm to -50dBm). At the same time, the MER performance decreases

(from 28dB to 15dB). As explained earlier, a trade-off between the two is necessary to obtain the best overall optimization. In addition, due to curve shape we see there is an ideal range for the Crest Factor Optimization parameter of about 70 to 150. In this range the variation of both shoulder level and MER are significant. Out of this range the loss of MER is too severe for little or no shoulder level gain. For instance, for a Crest Factor Optimization of 120, we observe a gain of 10dB for the shoulder level and a loss of only 3dB for the MER. Hitachi-Comark therefore recommends that this parameter be set in the ideal range of 70 to 150. Figure 12: Crest Factor Optimization Impact 3/10/2017 MPD-1611291-A Page 29/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.7.2.3 Protection Clipping Parameter Since adaptive precorrection can produce power peaks at the modulator output, a protection clipping has been added at the output of the modulator. It will allow the user to protect the amplifier input by clipping the signal out from the modulator. Note: Protection Clipping = 20 means OFF Recommended value to start = 15dB (default value) 2.7.3 DAP Operation DAP stands for Digital Adaptive Precorrection, it is an option allowing the user to run the EXACT-V2 in a very high-end mode in order to reach unequalled RF signal performance and to allow a significant gain in transmitter Power Efficiency. License activation First, the use of the DAP mode requires the user to unlock the DAP license key. This can be done in the Settings Tab under Management > Options 3/10/2017 MPD-1611291-A Page 30/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter DAP mode activation In the Settings Tab, the DAP mode can be enabled under Outputs > Precorrections:

Note: Enabling or disabling the DAP causes a reset of the non-linear curves. The user is then given the possibility to save the current curves, if needed. Non-Linear DAP launch The same protocol as the basic DAP applies (please refer to the previous chapter). 3/10/2017 MPD-1611291-A Page 31/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.8 Clock and Synchronization The clock and synchronization function is responsible for synthesizing the required temporal signals and data rates. A high-stability 10 MHz OCXO provides the internal clock reference. However, if synchronization with other equipment is required, an external 10 MHz clock signal can be chosen as a reference together with external 1PPS. The user shall configure the signal reference edge (rising or falling edge). An internal 1 PPS signal is generated from the external signal in order to maintain synchronized the output signal as long as possible in case of external signal failure. The modulator clock reference (10MHz) source can be configured as:

o Locked on the external 10 MHz signal reference (by default), o Derived from the 1PPS source (either on-board GPS or external 1PPS) o Internal. The module delivers a 10 MHz clock reference output signal and can also provide 1PPS if the user configures the 1PPS IN/OUT connector as an output. For VX20-x0x2 (with on-board GPS), the 1PPS output is derived from the on-board GPS. 2.8.1 GPS and clock management for VX20-x0x2 For VX20-x0x2, the on-board GPS block gives the possibility to directly receive an incoming GPS or Glonass signal. Please refer to Appendix C for GPS installation recommendations and Appendix D for GPS antenna recommendations. Up to four satellite signal levels may be displayed (Note: In case of GPS/Glonass, the four strongest levels are chosen amongst the eight total signals available.) Signal level is normally positive. If it is zero, this means that no satellite lock has been acquired yet. If it is negative, then that satellite is not being locked. The absolute value of a signal level field is the last known signal level of that satellite. Note: The GPS configuration parameters (location & time) is kept in the memory for faster synchronization after reset or ON/OFF. 3/10/2017 MPD-1611291-A Page 32/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter The figure below shows the entire VX20-x0x2 synchronization processing block (the on-board GPS being depicted as GPS receiver):

Figure 13: VX20-x0x2 synchronization processing block Then, depending on the users setup, three cases can be considered:

1) Working with external GPS signal reference (using on-board GPS receiver):

Figure 14: VX20-x0x2 clock synchronization - GPS signal In this case, the modulator processes the 1PPS due to the on-board GPS receiver. The GPS reference signal is available on GPS In interface. This 1PPS reference signal is used both for temporal synchronization and 10 MHz PLL locking. The 1 PPS I/O can be configured as an output to provide a 1PPS signal to other equipment. 3/10/2017 MPD-1611291-A Page 33/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2) Working with external 1PPS reference signal:

Figure 15: VX20-x0x2 clock synchronization external 1PPS signal In this case, the modulator directly uses the 1PPS available from the external source available on the 1PPS I/O interface. This 1PPS reference signal is used for both temporal synchronization and 10 MHz PLL locking. 3) Working with external 10 MHz and external 1PPS reference:

Figure 16: VX20-x0x2 clock synchronization external 10 MHz and 1PPS signal In this case, the modulator uses the external 10 MHz signal as well as the external 1PPS signal available on the 10 MHz In and 1PPS I/O interfaces, respectively. A 10 MHz reference signal is always available on the 10 MHz Out interface. 3/10/2017 MPD-1611291-A Page 34/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2.8.2 Warm-up Time This part aims at describing the WARM-UP function which has been designed for compensating the start-up delay of the OCXO (for instance, in case of AC power loss). In order to be stable the internal temperature of the OCXO must be stabilized and equal to 85C. However, this could take up to 5 minutes to obtain a stable 10MHz reference. During this unstable situation, the OCXO response is not linear and the 10MHz regulation algorithm takes a long time to converge. The WARM-UP survey has been defined for optimizing the 10MHz behaviour during that time. If it is enabled, the WARM-UP function is a new state of the 10MHz regulation, during which it is deactivated until the external reference is stable again. The 10 MHz regulation then starts again after that state is finished. This WARM-UP time typically takes 3-4 minutes and is limited to 10 minutes in any case. 2.8.3 Loss of Reference Signal management (LORS) Note: LORS is not useful when operating in MFN-Standalone configuration and shall be considered ad reserved for Future Use (RFU). In SFN, an accurate clock synchronization is very critical for ensuring a good SFN operation. For this purpose, the module implements the following operating modes in case of loss of the synchronization signal reference(s) (LORS). When losing temporal synchronization, it can be set to automatically mute after a variable delay (Time Out counter) also set by the user, from 0 (immediate mute) to 1440 min (24 hours), by 1 minute steps. In the table below, it is assumed that the primary clock is 10MHz and the secondary clock is 1 PPS:

10 MHz Detected 1 PPS Detected Operating Mode Normal 10MHz Detected Loss of Signal Clock_source= External External 1 PPS Loss of Signal Detected Clock_source= External 1PPS External 10 MHz Status No alarm warning warning Loss of Signal Loss of Signal Clock_source= Internal External 1 PPS &

(Configurable Mute after LORS 10 MHz critical alarms. Unlocked PLL

Configurable Mute on SFN Not PLL_ Unlocked status

= SFN not ready TimeOut) Ready Table 4: LORS management table 3/10/2017 MPD-1611291-A Page 35/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter The PLL_Unlocked status (Mute on SFN Not Ready) is used in order to maintain that the output signal is muted (please refer to the mute conditions in chapter RF output muting and RF maintain features.) In case of SFN application, an optional functionality PPS auto resync is available to allow resynchronization of the internal PPS (used as a reference time in SFN) when 10MHz clock control is locked. This optional functionality allows having the best accuracy on time reference PPS used for SFN systems. The external references have to follow the recommendations specified in the interface description Interfaces characteristics. The switching is seamless from external reference signal to the 10 MHz internal clock. Note: In case both Mute conditions Mute on LORS and Mute on Clock Not Synchro

(or Mute on SFN Not Ready) are enabled, the Mute will occur only after the LORS TimeOut has ended, as shown in the chronograms below:

1. Mute behaviour when:

Mute on LORS is enabled Mute on Clock Not Synchro is enabled LORS TimeOut is reached Figure 17: Mute behaviour LORS TimeOut is reached 3/10/2017 MPD-1611291-A Page 36/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 2. Mute behavior when:

Mute on LORS is enabled Mute on Clock Not Synchro is enabled LORS TimeOut is not reached If the LORS TimeOut is not reached when the clock reference comes back, another timeout starts (fixed to 60 sec), after which the module will mute if the Clock Synchro is still not OK:

Figure 18: Mute behavior LORS TimeOut is not reached 2.9 Power Measurements EXACT-V2 provides the capability to measure the forwarded and reflected RF power output from the transmitter, as described in the following figure. Figure 19: Power measurement Using an RF coupler, the user will connect the output of the transmitter to both FWP_In and RFP_In dedicated inputs. Each input is able to receive:

- An RF signal from 0 to -20dBm (0.5dBm accuracy from 0 to -10dBm, 1dBm accuracy from 0 to -10dBm) 3/10/2017 MPD-1611291-A Page 37/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter

- A VDC signal from an external power sensor from 0 to 5VDC The working mode is configurable using the WEB GUI. Depending on the mode selected, additional parameters will be needed, such as the coupler sample value or external sensor offset/slope factor, to ensure an accurate measurement. Please refer to you external device user manual. Minimum and maximum warning and alarm thresholds for both forward and reflected power can be set via WEB GUI by the user for error management and monitoring. 2.10 Automatic Gain Control (AGC) EXACT-V2 provides a built-in output AGC to drive power amplifier stage. The output allows the device to maintain a very stable system output power that could otherwise vary depending on temperature, aging, etc. This feature uses the previously described FWP-In input. The maximum gain can be configured (depending on the initial EXACT-V2 output power and the maximum EXACT-

V2 output power) by the user to protect the PA input stage from power peaks. Figure 20: Built-in output AGC 3/10/2017 MPD-1611291-A Page 38/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3 EXACT-V2 Rack 3/10/2017 MPD-1611291-A Page 39/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 40/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter The EXACT-V2 unit is a standard 1RU rackmount chassis. The dimensions are 9.8 x 19 x 1.75. The modulator weight is 10 lbs. Figure 21: EXACT-V2 1RU 3.1 EXACT-V2 mechanics 3.1.1 Front panel layout Below is a depiction of the exciters front panel. Figure 22: Front panel overview The front panel is composed of an LCD screen display with six buttons: four navigation buttons (up, down, left and right arrows), one OK green button and one Cancel/Return red button. This front panel display allows the user to monitor and control the main features of the EXACT-V2 exciter. Advanced features need to be accessed via the Web GUI. Four status LEDs are also available: Power, Input, Output and Alarm. For a detailed description, refer to paragraph 3.3 Front Panel signalization (LEDs description). 3/10/2017 MPD-1611291-A Page 41/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter A Control Ethernet port is also available on the front panel. 3.1.2 Rear Panel Layout Below is a depiction of the exciters rear panel. Figure 23: EXACT-V2 Rear panel overview The rear panel provides all the connectors needed for interconnection with the exciter. Please refer to the next section for a detailed description. 3.2 Interface characteristics The product interface are as follows:

x 2 Stream input interfaces Function:

General Standard:

Name:

Connector:

Type:

Data Rate:

Performance Mode:

Format:

Primary & secondary Inputs SMPTE-310M & DVB-ASI ASI/SMPTE_IN1 & ASI/SMPTE_IN2 BNC Connector Input impedance 75 Input DVB-ASI: 80 Mbps maxi. SMPTE-310M: 19 Mbps Burst or Packet mode (DVB-ASI) DVB-ASI: 188/204 bytes SMPTE-310M: 188 bytes Figure 24 ASI/SMPTE-310M Input interfaces 3/10/2017 MPD-1611291-A Page 42/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter ASI Stream Output interface General x 1 Function:

Standard:

Name:

Connector:

Type:

ASI Output DVB-ASI ASI_Out BNC Connectorimpedance 75 Output ASI: 80 Mbps maxi. Performances Data Rate:

Mode/Format (Out): Packet mode/188-byte Figure 25: ASI Output interface Electrical Gigabit Port

(Data & Control) General Performances Data Rate:

Function:

Standards:

Connector Name:

Connector Type:

Type:

Ethernet:

Packet Type:

Protocols:

x 2 Gigabit Ethernet Port Ethernet, IP Gigabit1/Ctrl & Gigabit2 RJ-45 Input/output 1 Gbps max 10/100/1000 Base T IPv4 IPV6 Ready IEEE802.3, IPv4, IPv6, XML, FTP, SNTP 50 ms Half/full duplex Jitter Tolerance:

Mode:

Stream Encapsulation: Accept IP and ALP formats (ATSC3.0) FEC Decoding SMPTE-2022 [I7 & I8]

Figure 26: Electrical Gigabit Data Interfaces Figure 27: Electrical Gigabit Control Interfaces 3/10/2017 MPD-1611291-A Page 43/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter x1 GPS Antenna input General Performances Function:

Name:

Connector:

Type:

Antenna Type:

Antenna Voltage Antenna System Gain: 10 dB GPS antenna input GPS SMA Input Active 3.3 VDC Frequency 1575.42 MHz Figure 28: GPS antenna input Clock reference input General Performances Frequency:

Function:

Name:

Connector:

Type:

Level:

x 1 Frequency reference input 10 MHz_IN BNC 50 Input 10 MHz From -15 to +15 dBm Figure 29: Clock reference input Clock reference Output Function:

General Name:

Connector:

Type:

Performances Frequency:

Level:

x 1 10 MHz reference output 10 MHz_OUT BNC 50 Output 10 MHz 0 dBm 3 dB Figure 302: Clock reference output 3/10/2017 MPD-1611291-A Page 44/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 1PPS reference input/output General Performances Signal :

Function:

Name:

Connector:

Type:

Level:

x 1 Time Reference in/out 1PPS BNC 50 k Configurable I/O 1 PPS LVTTL / TTL (input) LVTTL (output) 50ns (input tolerance) General Performances Figure 31: 1PPS reference input/output x 1 Function:

Standards:

Name:

Connector:

Type:

Frequency*:

Bandwidth:

Level:

ATSC 1.0:

EVM:

Shoulders:

Spurious:

ATSC 3.0:

MER:

Shoulder:

Spurious:

RF output ATSC 1.0 & ATSC 3.0 RF N connector 50 Output VHF (54-88 MHz) VHF (170-216 MHz) UHF (470-862 MHz) 6 MHz 0 dBm

< 2.5% equalizer off 57 dB / 63 dB with precor

< -50dBc

> 40dB

> 40dB

< -50dBc

*Specify UHF, VHF, or VHFB3 at time of order. 3/10/2017 MPD-1611291-A Page 45/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter RF Output (with OPT-20dB Internal Preamplifier) X 1 General Performances Function:

Standards:

Name:

Connector:

Type:

Frequency*:

Bandwidth:

Level:

ATSC 1.0:

EVM:

Shoulders:

Spurious:

ATSC 3.0:

MER:

Shoulder:

Spurious:

RF output ATSC 1.0 & ATSC 3.0 RF N connector 50 Output VHF (54-88 MHz) VHF (170-216 MHz) UHF (470-862 MHz) 6 MHz

+20 dBm

< 2.5% equalizer off 57 dB / 63 dB with precor

< -50dBc

> 40dB

> 40dB

< -50dBc

*Specify UHF, VHF, or VHFB3 at time of order. Figure 32: RF output 3/10/2017 MPD-1611291-A Page 46/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Monitoring Output General Function:

Standards:

Name:

Connector:

Type:

Frequency:

Level:

Other:

Function:

Standards:

Name:

Connector:

Type:

Frequency:

Level:

Other:

Performances Monitoring Output (with OPT-

20dB internal preamplifer) General Performances x 1 Monitoring output ATSC Monit Out SMA 50 Output See RF Output

-20 dB (relative to RFout) x 1 Monitoring output ATSC 1.0 / ATSC 3.0 Monit Out SMA 50 Output See RF Output

-43 dB (relative to RFout) Monitoring signal from modulator board (before amplifier) Figure 33: Monitoring output 3/10/2017 MPD-1611291-A Page 47/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter RF Feedback Inputs General Performances Function:

Standards:

Name:

Connector:

Type:

Frequency:

Bandwidth:

Level:

x 2 RF Feedback inputs / RF Measurements

FBA / FBF SMA 50 Input UHF, VHF or VHF B3 depending on model 75 MHz

-5 to -15 dBm Max input level:

+5dBm (before damage) Return loss:

>13dB Figure 34: Feedback inputs Forward Power Measure Input/AGC General x 1 Function:

Standards:

Name:

Connector:

Type:

Frequency:

Range:

Return loss:

Impedance:

Range:

Precision:

Impedance:

Performances

(RF input) Performances

(VDC input) Forward Power Measure

FWP In SMA 50 / High impedance Input Depends on model 0 to -20dBm Typical 0 to -10dBm

>12dB 50 0 to 5VDC 0.01VDC typical 80 K Precision:

0.5dB typical Max input level:

+5dBm (before damage) Figure 35: Forward Power Measurement / AGC input 3/10/2017 MPD-1611291-A Page 48/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Reflected Power Measure Input General x 1 Function:

Standards:

Name:

Connector:

Type:

Frequency:

Range:

Precision:

Return Loss:

Impedance:

Range:

Precision:

Impedance:

Reflected Power Measure

RFP In SMA 50 / High impedance Input Depends on model 0 to -10dBm 0.5dB typical

>12dB 50 0 to 5VDC 0.01VDC typical 80 K Max Input Level:

+5dBm (before damage) Performances

(RF input) Performances

(VDC input) Figure 36: Reflected Power Measurement input 3/10/2017 MPD-1611291-A Page 49/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter TOD General Function:

Standards:

Name:

Connector:

Type:

TOD Baud rate:

Other:

x 1 Control / monitoring 1x RS-232 Serial Port 1 Female SubD9 RS-232/RS-485 9600 bps to 115200 bps 9600 bps No parity, 8 bits data, 1 bit stop Performances Control Baud rate:

PIN 1 2 3 4 5 6 7 8 9 Shield GND Name RS232 Tx Rfu TOD Rx RS232 Rx GND RS485 Rx+

RS485 Rx-

RS485 Tx+

RS485 Tx-

Dir Out In In In In Out Out Figure 37: TOD/RS232 Port The information containing Time Of Day (TOD) is available on Tekelec GPS with the following characteristics:

ASCII, 9600 bps, 8bits, 1 stop bit, no parity Protocole <message> <CR> <LF>

Format day/year hour:minute:seconds e.g. 317/1996_18:16:20 The content of message should read GPS reference and not UTC reference or local time. 3/10/2017 MPD-1611291-A Page 50/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Alarm General Function:

Name:

Connector:

Type:

x 2 Alarm relays GPIO / GPIO2 SubD9 connectors Dry contacts / GPI / VDCin / VDCout PIN 1 2 3 4 5 6 7 8 Name RELAY1_Normally_Open (Open when active alarm) 12 VDC output through 2.7 Kohms resistor and protection diode RELAY2_COM RELAY3_ Normally_Open (Open when active alarm) GND (cathode of the opto-coupler diode) RELAY1_COM RELAY2_ Normally_Open (Open when active alarm) Anode of the opto-coupler diode through 330 ohms resistor RELAY3_COM 9 Shield GND PIN 1 2 Name RELAY4_Normally_Open (Open when active alarm) 12 VDC output through 2.7 Kohms resistor and protection diode RELAY5_COM RFU GND (cathode of the opto-coupler diode) RELAY4_COM RELAY5_Normally_Open (Open when active alarm) Anode of the opto-coupler diode through 330 ohms resistor 9 RFU Shield GND 3 4 5 6 7 8 Dir Dir Figure 38 : Alarms Port 3/10/2017 MPD-1611291-A Page 51/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.3 Front Panel signalization (LEDs description) A set of 4 LEDs indicate the exciter status:

o o o o Behavior may differ depending on the exciter function and configuration. Below is a description of the LEDs behavior:

A Power LED indicator An Input LED indicator An Output LED indicator An Alarm LED indicator Name Description Power Green off: power off Green static: power on Input Output Alarm Green off: Primary input is not detected (in manual mode) or primary and secondary input is not detected (in auto mode) Green flashing: Primary input is OK(1) but secondary input is OK

(in auto mode) Green static: Primary input is OK(1)(4) Green off: no RF output (module failure or mute condition) Green static: the RF output is available (normal mode) Green flashing: Test signal(2) is generated or RF Maintain mode Yellow static: Warning RFP or FWP Red static: Error RFP or FWP Red flashing : RFP Critical Error Off: No critical error detected Red static: Module failure Red flashing: Primary input failure(3) or primary clock reference(5) loss (10 MHz or PPS in case of ext 10MHz + ext 1PPS primary selection) Table 5: LED status

(1) If primary input is detected while any condition for "Mute on TS error" is met, the input LED flashes.

(2) PRBS, Sine, or any special test.

(3) Except in case of PRBS or Sine test mode.

(4) In automatic mode, if primary input is detected, the input LED is fixed whatever the secondary input status. 3/10/2017 MPD-1611291-A Page 52/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.4 Power requirements The exciter must be powered by a 110-240VAC 50-60Hz voltage. The overall EXACT-V2 modulator consumes up to 70 W. The overall EXACT-V2 exciter consumes up to 120 W with optional +20 dB preamp. Figure 39: Power supply plug A yellow/green ground cable (0.75mm min) must be connected to the small connector located between the power supply plug and the GPS antenna input. This cable must be securely connected to the ground before switching on the equipment. 3.5 Performances and technical characteristics 3.5.1 General characteristics Characteristics Typical Value Comment EXACT-V2 EXACT-V2-20dB 90 - 264 VAC 50-60 Hz

< 70 W

<120 W 9.8 x 19 x 1.75 10 lbs 0 C to +50 C

-10 C to +70 C

< 2000m Air cooling areas Storage Relative Humidity:

10 to 80 % at 50 C Control and data Ethernet interfaces Gigabit interfaces Typical Value Comment 3/10/2017 MPD-1611291-A 10/100/1000 Base-T Half / Full duplex Page 53/94 Environment Power Voltage:

Frequency Range:

Power Consumption:

Dimensions:

Weight:

Operating Temperature:

Storage Temperature:

Operating altitude:

Cleaning:

3.5.2 Ethernet Control Link

USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Maximum Bit Rate:

100 Mbps Number of Processed IP Streams:

1 per physical interface Maxi Network Jitter Tolerance:

50 ms Ethernet MTU Length:

Max 1500 bytes In ATSC 1.0 TS / RTP / UDP / IP and Pro-MPEG Cope 3 decoding

(compliant with SMPTE 2022-1-2007 and SMPTE 2022-2-2007) TS Packet Number per IP Packet:

User configurable Data Link IP Characteristics Data De-Encapsulation Protocol:

FEC Decoding:

FEC Type:

FEC Matrix (L,D)/(LxD) :

MPEG-TS Packet Length:

3.5.3 Serial control interfaces Auto nego 1 to 7 SMPTE 2022 SMPTE 2022 SMPTE 2022 188 bytes Control interfaces Typical Value Comment Electrical Level:

12v compatible RS232 TX and RX signals only. Limited to the use for TX control part (does not fully control the exciter) 9600 bauds to 115200 bauds No parity, 8 bits data, 1 bit stop SuB-D9 specific pinout with RS485 TOD is RFU in ATSC1.0 and TOD interfaces RS485 Full or Half duplex TX and RX signals only. Limited to the use for TX control part (does not fully control the exciter) Electrical Level:

RS485 compatible 9600 bauds to 115200 bauds No parity, 8 bits data, 1 bit stop SuB-D9 specific pinout with RS232 and TOD interfaces RS232 Standard:

Baud Rate:

Others:

Connector:

RS485 Standard:

Baud Rate:

Others:

Connector:

3/10/2017 MPD-1611291-A Page 54/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Limited to RX signal RS232 12v compatible 9600 bauds No parity, 8 bits data, 1 bit stop SuB-D9 specific pinout with RS232 and RS485 interfaces ASI inputs / output and MPEG-TS processing TS stream Typical Value Comment Packet Size:

188/204 bytes - Packet or DVB-ASI SMPTE-310M Maximum Useful Bit Rate:

DVB-ASI / SMPTE-310M TS/DVB-ASI or TS/SMPTE-

310M Burst mode 188 bytes 19.39 Mbps

+/- 100 ms 75 ohms

> 15 dB up to 270 MHz TS Stream switching:

TS CleverSwitch:

IP CleverSwitch:

Automatic or manual Between primary & sec. stream Between prim. & sec. IP stream With auto or manual switch-back Not seamless Not seamless NIT update Bit rate adaptation PCR re-stamping Carrier Frequency update Maximum Useful Bit Rate:

Max. Output Jitter:

Same as incoming jitter TS over DVB-ASI 188 byte 188 byte 19.39 Mbps 19.39 Mbps DVB-ASI SMPTE-310M DVB-ASI SMPTE-310M TOD Standard:

Electrical Level:

Baud Rate:

Others:

Connector:

3.5.4 ASI / SMPTE Inputs Format:

Max. Input Jitter:

Input Impedance:

Return Loss:

TS or T2-MI Processing TS processing ASI Output Format:

Packet Size:

3/10/2017 MPD-1611291-A Page 55/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Characteristics Typical Value Comment Characteristics Typical Value Comment Modulation Performances According to ATSC A/53 3.5.5 Digital modulation ATSC Modulation ATSC Mode:

Channel Bandwidth:

In Band SNR (Eq. OFF):

EVM (Eq. OFF):

MER (Eq. OFF):

MER (Eq. ON):

Shoulder and Out of Band Rejection:

8VSB 6 MHz 30 dB 2.0%

30 dB 45 dB 63 dB 57 dB / 63 dB with precor 63 dB typical From pilot level EXACT-V2 EXACT-V2-20dB at +20 dBm EXACT-V2-20dB at +17 dBm Relative to the total power of the signal at nominal output power Spurious:

-50 dBc Amplitude Ripple:

0.2 dB typical Group Delay Ripple:

20 ns typical Pilot Carrier Phase Noise:

-104 dBc/Hz @ 20 kHz up to PAPR Configuration Range:

Pre-clipping Optimization:

Protection Clipping:

700 MHz 8 to 20 dB (0.1 dB step) 0 to 255 8 to 20 dB (0.1 dB step) Characteristics Typical Value Comment Miscellaneous Configurable on stream errors Configurable on clock errors Configurable Timeout (LORS) Automatic Mute:

RF Maintain:

Spectrum Reverse:

Test Modes:

Configurable on stream errors Single sine tone / +6 dB Sinus Configurable PRBS 3/10/2017 MPD-1611291-A Page 56/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Characteristics Typical Value Comment 3.5.6 Clock synchronization External References External 10 MHz Reference Input Impedance:

Level:

Frequency:

External 1 PPS Reference Input Level:

Min Pulse Width:

1 PPS Reference Output Level:

Pulse Width:

GPS Synchronization System:

Frequency:

Max Nb of Tracked Sat.:

Antenna System Gain:

Sensitivity:

PPS Accuracy:

Antenna Power Supply:

50 Ohms

-15 to +15 dBm 10 MHz 0.6 ppm LVTTL level 5 kohms 1 s LVTTL 100 ns 1575.42 MHz GPS 12 10 dB

<-138 dBm 50 ns 3.3 Volts DC 10 MHz Reference Output:

0 dBm 3 dB Characteristics Typical Value Comment Characteristics Typical Value Comment 3/10/2017 MPD-1611291-A Page 57/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Typical Value Comment 10 MHz Lock Control Type:

Digital Characteristics Clocks & Synchronization Internal 10 MHz clock TfStabilityf(Full Temperature Range):

Tuning:

Short Term Stability:

Aging:

Synchronization Cases External_10MHz_Locked:

External_10MHz_Unlocked:

Stability

< 3.10-10

< 3.10-10 Onboard GPS_Locked:

< 7.10-10 With OCXO 0 50 C Over 1 s, 10 s

< 5.10-9

< 0.6 ppm

< 1.10-11

< 5.10-10 / day

< 7.5.10-8 / year

< 5.10-7 / 15 years Aging year

< 7.5.10-8 /

Internal

< 5.10-10 / day year

< 5.10-10 / day Onboard GPS_Unlocked:

< 7.10-10

< 7.5.10-8 /

Internal Output Phase Noise:

< -104 dBc/Hz @ 20 kHz Guaranteed from 470 MHz to 700MHz 3/10/2017 MPD-1611291-A Page 58/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.5.7 RF and monitoring outputs RF Output Adjustable Frequency Characteristics Typical Value Comment 470 to 862 MHz 170 to 240 MHz 54 to 88 MHz 1 Hz 0.2 Hz 50 ohms 0 dBm 1 dB

+20 dBm 1 dB 0.1 dB / 10 C

> 13 dB

> 12 dB 0 to 17 dB 0.1 dB

-20 dB 2 dB

-40 dB 2 dB EXACT-V2 EXACT-V2-20dB EXACT-V2 EXACT-V2-20dB EXACT-V2-20dB EXACT-V2 EXACT-V2 EXACT-V2-20dB EXACT-V2-20dB Range:

Step Size:

Accuracy:

Impedance:

Output Level:

Main Signal:

Stability:

Return Loss:

Attenuation Range:

Attenuation Step:

Monitoring Signal:

(Relative to Main Output) 3/10/2017 MPD-1611291-A Page 59/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.5.8 Digital precorrection Characteristics Typical Value Comment Feedback Inputs RF Frequency Band:

Impedance:

Return Loss:

Nominal Input Level:

Max Input Level:

Adjacent Channel Rejection:

470 to 862 MHz 170 to 240 MHz 54 to 88 MHz 50 ohms

> 13 dB

-5 to -15 dBm

+5 dBm (before damage) No adjacent channel support Characteristics Typical Value Comment On the overall bandwidth Manual Precorrection Linear Precorrection:

Amplitude:

Group Delay:

Adaptive Precorrection Linear Adaptive Precorrection Non-Linear Adaptive Precorrection Amplitude:

Group Delay:

AM/AM:

AM/PM:

32 points 3 dB (0.1 dB step) 500 ns (10 ns step) 3 dB (0.1 dB step) 500 ns (10 ns step) 6 dB (0.05 dB step) 25 (0.2 step) Characteristics Typical Value Comment DAP Performances Measurement RF Feedback Input Levels:

Bar graph 0-100 %

Left and Right Shoulders:

On FBA or FBF input Resolution 1 dB MER:

> 45 dB max On FBA or FBF input For relative use only From 20 up to 40 dB Typical The MER measurement should not be used as an absolute value. It can be used only for variation detection. 3/10/2017 MPD-1611291-A Page 60/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.5.9 Power level measurement inputs and AGC Characteristics Typical Value Comment Configurable Coupler Gain:

0 to +100.0 dB Configurable Probe Offset:

-32768 mV to +32767 mV 0.1 dB 1 mV 50 ohms

~ 80 kohms

> 12 dB

-10 to 0 dBm 0 to 5 Vdc

+5 dBm / 6Vdc 0.5 dB typical 0.01 Vdc

+5 dBm (before damage) 1 s max Full bandwidth In RF power mode In DC voltage mode In RF power mode In DC voltage mode May require significant calibration

-100.00 to +100.00 dB/V

-32768 to +32767 mVrms/V 0 to +65535 mW/V 0.01 dB/V 1 mVrms/V 1 mW/V for VDC/dBm type for VDC/Vrms type for VDC/W type for VDC/dBm type for VDC/Vrms type for VDC/W type 0 to 20.0 dB 0.1 dB

-100.0 to 100.0 dBm 0.1 dB 25 Vac / 60 Vdc 1 A 62.5 VA / 30 W Normally open Normally close Measurement Inputs

(Forward and Reflected Power) AC Impedance:

DC Impedance:

Return Loss:

Nominal Input Level:

Maximum Input Level:

Accuracy:

Max Input Level:

Reactivity Time:

Measurement Bandwidth:

Measurement Calibration Gain Step:

Offset Step:

Slope Step:

Configurable Probe Slope:

AGC Maximum AGC Gain:

Maximum AGC Gain Step:

Nominal Power Level:

Nominal Power Level Step:

3.5.10 Dry contacts Relay characteristics Maximum Switching Voltage:

Maximum Switching Current:

Maximum Switching Power:

Available Contacts:

Characteristics Typical Value Comment 3/10/2017 MPD-1611291-A Page 61/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3.6 Conformity with EC Directive The CE marking is present on the RTM-50 product. It:

Shows that we have checked that this product meets safety, health or environmental requirements Is an indication of a products compliance with legislation Allows the free movement of products within the market By placing the CE marking on our product we are declaring, on our own responsibility, conformity with all of the legal requirements to achieve CE marking. 3/10/2017 MPD-1611291-A Page 62/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 4 EXACT-V2 Installation 3/10/2017 MPD-1611291-A Page 63/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 64/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 4.1 Unpack the Unit Please check the shipping container for any damage due to transportation when receiving the product. If there is any damage please contact the carrier immediately. Carefully unpack the exciter from the storage box. Check the exciter for any damage due to transportation. Save the box and foam packaging in case the system needs to be shipped to another location or returned for repair. 4.2 Installation and Recommendations Install the unit in the appropriate location using four, rack-mounting screws (not included) as shown in the following figure:

Figure 40: Chassis installation Notes:

Mechanical mounting into a rack must take into account any overloading to the mounting ears of the chassis to avoid danger. Rack connection to power supply must be taken into account for any electrical overload protection. A specific electrical study must be performed by integrator/installer. The equipment must be connected to power supply with a ground connection. Ground connection of the equipment must be checked before use. Installation must be performed by a qualified individual following the CEI60728-11: 2005 directive. 3/10/2017 MPD-1611291-A Page 65/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 4.2.1 Temperature alarms The maximum temperature levels are as follows:

o A warning will be raised when the internal temperature reaches higher than 68C o An alarm with output muting will trigger after internal temperatures reach higher than 71C In both cases, the normal status conditions return when the temperature falls below 67C. 4.2.2 Cooling methods Specific care must be taken concerning the cooling system. The following figure shows air flow due to internal fans. When the unit is integrated in an equipment cabinet, sufficient space must be left on the right and left side of the unit to allow sufficient air flow. Figure 41: Rack air flow 4.3 Wiring and Powering on Once fixed in a location, the exciter can be wired depending on its configuration. When powered ON, the exciter is fully operational after a few seconds. Please refer to section 3.3 for a front panel LED diagnostic. To simply control and monitor the EXACT, any web browser can be used with an IP connection between the exciter and the PC. The default IP address is 192.168.0.209 on IP port #1. The control port #1 IP configuration can be retrieved/modified using the front panel menu. Notes: The power supply connector must remain available to easily disconnect the equipment in case of emergency. 3/10/2017 MPD-1611291-A Page 66/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 4.4 Initial Configuration Except otherwise specified at the time of order, the exciter is delivered with the basic configuration as described hereafter. The following configuration can also be retrieved with the Set Default command (not available in the WEB GUI) that will only keep IP settings and precorrection curves. IP Parameters Ethernet Mode:

DHCP Gigabit#1 Configuration:

(not changed by default command) Gigabit#2 SNMP

(not changed by default command) Gigabit#7 Front Panel Control

(not changed by default command) Gigabit#3 Input

(not changed by default command) Gigabit#4 Input

(not changed by default command) Gigabit#5 Input

(not changed by default command) Gigabit#6 Input

(not changed by default command) Default Settings Auto-sensing Disabled MAC address: module unique address Address: 192.168.0.209 Subnet: 255.255.255.0 Gateway: 192.168.0.254 DHCP: OFF MAC address: module unique address Address: 192.168.0.211 Subnet: 255.255.255.0 Gateway: 192.168.0.254 DHCP: OFF MAC address: module unique address Address: 192.168.0.210 Subnet: 255.255.255.0 Gateway: 192.168.0.254 DHCP: OFF MAC address: Port#2 unique address Address: 192.168.1.210 Subnet: 255.255.255.0 Gateway: 192.168.1.254 MAC address: Port#2 unique address Address: 192.168.1.211 Subnet: 255.255.255.0 Gateway: 192.168.1.254 MAC address: Port#2 unique address Address: 192.168.2.210 Subnet: 255.255.255.0 Gateway: 192.168.2.254 MAC address: Port#2 unique address Address: 192.168.2.211 Subnet: 255.255.255.0 Gateway: 192.168.2.254 Gigabit #3, #4, #5, #6 Input 1 sec. Time Out 3/10/2017 MPD-1611291-A Page 67/94 Table 9: Default IP settings at the delivery USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter ATSC 1.0 Other Parameters Default Settings

(not changed by default command) Standard:

Test Mode:

Serial Speed:

Serial Protocol:

Auto Logout Time:

ASI/SMPTE_IN1 Type:

ASI/SMPTE_IN2 Type:

ASI/SMPTE_IN1 Equalizer* :

ASI/SMPTE_IN2 Equalizer* :

Primary Source:

Secondary Source:

ASI Output TS CleverSwitch:

Auto_Switch_Back:

Packet error threshold:

Packet valid threshold:

ATSC signalization:

ASI management unit

(Bit rate adaptation):

Major Channel number update:

Major Channel number:

Carrier Frequency update:

Carrier Frequency for Carrier Frequency Update:

Bandwidth:

Output Attenuation (ATSC) *:

Crest Factor:

Crest Factor Optimization:

Protection Clipping:

Spectrum Inversion:

RF Output Monitoring:

Exciter RF Failure Offset:

Starting Delay AGC AGC Maximum Gain AGC Response Time ASI/SMPTE_IN1 ASI/SMPTE_IN2 ATSC Disabled 57600 Standard Off ASI ASI Disabled Disabled OFF Enabled Disabled 5 80000 8-VSB Enable Disable 0 Disable 665 MHz 6 MHz 0 dB 10.0 dB 0 15 dB No Enabled 5.0 dB 5 seconds Off 0 dB Nominal Center Frequency (ATSC) *:

665 MHz (channel 46) 3/10/2017 MPD-1611291-A Page 68/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Mute Conditions:

Mute:

RFP Warning AGC Protection:

RFP Error Protection Cycle:

RFP Error Protection No. of Retries:

RFP Error Protection Delay Between Retries:

RFP Error Protection Cycle Reset Time:

RF Maintain:

DAP Mode:

Enable Down-Converter:

Linear Precorrection Circuits* :

Non-Linear Precorrection circuits* :

Linear DAP Mode:

Non-Linear DAP Mode:

Linear DAP Time_Out:

Non-Linear DAP Time_Out:

Primary Clock:

Secondary Clock:

PPS Source:

PPS Interface:

PPS Edge (RFU):

Warm-Up Time (Before 10MHz Synchro):

GPS Antenna Voltage:

Absolute Reference Time:

Time and Date Setting:

Power Measurements:

(not changed by default command) FWP Input Type:

(not changed by default command) FWP Coupler Attenuation:

(not changed by default command) Nominal Power:

(not changed by default command) Min FWP Error:

(not changed by default command) Min FWP Warning:

(not changed by default command) Max FWP Warning:

(not changed by default command) GPI=0: Disabled GPI=1: Disabled Disable Disabled Disabled 3 4 60 On Input Stream Error: Enabled Enabled Off (standard) Disabled (Bypassed) Disabled (Bypassed) Static (DAP is disabled) Static (DAP is disabled) Onboard GPS 20 min 10 min Internal Internal Output Rising Enabled 3.3 VDC GPS Manual Active RF input 0 dB 0 dBm 80 %

90 %

110 %

3/10/2017 MPD-1611291-A Page 69/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Max FWP Error:

(not changed by default command) RFP Input Type:

(not changed by default command) RFP Coupler Attenuation:

(not changed by default command) Max RFP Warning:

(not changed by default command) Max RFP Error:

(not changed by default command) Dual-Drive Redundancy:

GPO2 Opening Triggers:

GPO3 Opening Triggers:

RF Switch Monitoring:

Transmitter Control:

120 %

RF input 0 dB 10 %

20 %

Disabled None Output error Alarm error Disabled Disabled

*Note: different set of parameters are used for Single Carrier modulation (ATSC) and OFDM modulation (future ATSC 3.0) in regards to their:

o Frequency (Carrier frequency in ATSC // Center frequency in ATSC 3.0) o Attenuation o Gain offset o Linear Precorrection activation (with separate curves banks) o Non-Linear Precorrection activation (with separate curves banks)

* Note: On the WEB GUI, the input equalizer is automatically changed to disabled when the user selects the SMPTE input type. ATSC 3.0 (Available from the S110 firmware version) 3/10/2017 MPD-1611291-A Page 70/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5 Operation 3/10/2017 MPD-1611291-A Page 71/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 72/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.1 Operation Generalities 5.1.1 Local Operation The product can be locally controlled using the front panel menu. It is composed of an LCD screen and 6 buttons to navigate the control/monitoring menu. The primary features are available using the front panel but for complete access to the unit, please use the web GUI. 5.1.2 Remote Operation The product can be controlled using any web browser. It allows the user to control, monitor, and maintain the unit. Below are the system requirements:

PC using a Pentium 1GHz or higher microprocessor Microsoft Windows Vista/XP or Windows 2000 Service Pack 3 or later 1024 x 768 resolution (or higher) video adapter Minimum of 128 MB of RAM (256 MB recommended) 120 MB of disk space A Microsoft-compatible mouse Figure 42: EXACT-V2 IP connection The web GUI can be accessed via any web browser using the IP address of the unit. By default, this address is 192.168.0.209. The IP address can be retrieved/modified using the front panel menu. 3/10/2017 MPD-1611291-A Page 73/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.2 Embedded Web GUI Description 5.2.1 Requirements To connect to the EXACT-V2 web interface, a web browser with Flash Player is mandatory. 5.2.2 Connection to EXACT-V2 Using the web browser, the user will access the modulator by typing http://[IP], where [IP] is the IP address of the equipment. This address can be retrieved using the front panel display menu: MANAGEMENT > Control IP Port > Add To access any settings of the EXACT-V2 unit, a login is required. There are 3 logins:

o User (Guest): Only monitoring of the equipment is allowed o Maintenance: Minor changes are allowed like test mode, input management, precorrections, mute/unmute, clock and synchronization, etc. o Administrator: Complete access to the equipment To login, the user will choose their access level, type the password and click on the Login button. There is no password for the Guest account. Both the Administrator and Maintenance accounts have the same password: admin Depending on the granted access level, each parameter that can be modified by the user will be followed by a small tool icon. 3/10/2017 MPD-1611291-A Page 74/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.2.3 General Overview 1 2 3 Area 1 is the header of the main window. It presents the login/logout functions as well as equipment identification. Area 2 is the main window. It presents either the parameters settings or the detailled monitoring. Area 3 is the Status Overview area. It presents an overview of the main status. 3/10/2017 MPD-1611291-A Page 75/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.2.4 Settings Tab The Settings tab can be accessed by clicking on the Settings header. The left part of the screen describes the settings menu while the right part presents each screen related to one menu item. When any parameter is changed, it is highlighted. 3/10/2017 MPD-1611291-A Page 76/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter A message in the main window header allows the user to verify if the settings have been modified and not applied. The Apply button appears to confirm the application. If any change must be discarded, the Refresh button can be used to display the current configuration in the settings screens. 3/10/2017 MPD-1611291-A Page 77/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.2.5 Monitoring Tab The Monitoring tab can be accessed clicking on the Monitoring header. It is divided into 2 independent screens to allow the user to monitor two different blocks. To select a block to monitor, a Drag and Drop feature can be used from the Status Overview area to one of the two areas. 3/10/2017 MPD-1611291-A Page 78/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 5.2.6 Log File EXACT-V2 features an onboard Log file to consult the different information, warning or error that occurred on the product. To access to the Log File window, please press the envelop. Then the log file window is displayed. Notes: For more information concerning this topic, please refer to the dedicated Application Note. 5.3 Front Panel Menu Description Main settings can be accessed from the EXACT-V2 front panel display (FPD). Menu navigation is done using the keypad on the right side of the LCD screen. 3/10/2017 MPD-1611291-A Page 79/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 80/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 6 Maintenance

& Troubleshooting 3/10/2017 MPD-1611291-A Page 81/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 82/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 6.1 Versions management The product is defined by its commercial reference and its version numbers. Product versions are managed using two separate and independent three digits numbers:

The hardware version The software version The version of the product is defined for example as: ............... H100-S112 This means that the hardware of the product is in version 1.00 and the software is in version 1.10. These version IDs can be read from the Web GUI. 6.2 Software updates Software updates can be made by the user. New software can be provided by the Hitachi-Comark customer service depart. To request the latest updates, please contact our Customer Service Department by sending an email to service@comarktv.com or by calling 800-345-9295. For each software version available, a unique file (customer pack) has to be provided by Hitachi-Comark. It is labeled as EXACT-H100-S112.zip, where EXACT-V2 is the commercial reference of the product to which it applies to, H100 gives the minimum hardware version required by this new software version, and S100 is the new software version This customer pack contains:

o The firmware for ftp download (IP connection) referred to as EXACT-3000-

S0100-B0301.tfw o The Upgrade Procedure (.pdf file) explaining how to perform the update o The release notes o The User Manual o Any additional software, if needed The software upgrade is done using the Web GUI of the product:

o Copy the *.tfw file on your local hard disk. o Access to the web GUI and go to Management / General tab. o Click on the Firmware Upgrade button o Select the new release file on your local hard disk. The product will then automatically reboot to take into account the new release. 3/10/2017 MPD-1611291-A Page 83/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 6.3 Licence key management New licences for either TSOIP or SNMP may be purchased separately and added to the exciter. For this purpose:

o Access the web GUI and go to the Management / Options tab o Select the desired option to unlock by clicking on the associated Unlock button o Enter the key code that is provided by Hitachi-Comark following the licence order The product then automatically reboots and the new licence is taken into account. 6.4 Troubleshooting of the exciter 6.4.1 LED Check If the exciter does not work properly, a few checks could be done before calling the technical support team at Hitachi-Comark. A set of 4 LEDs indicates the modulator status following the Hitachi-Comark standard, Power, Input, Output and Alarm LED indicators. Name Description Power Green off: power off Green fix: power on Input Output Alarm Green off: Primary input is not detected (in manual mode) or primary and secondary input is not detected (in auto mode) Green flashing: Primary input is OK(1) but secondary input is OK

(in auto mode) Green fixed: Primary input is ok(1)(4) Green off: no RF output (module failure or mute condition) Green fixed: the RF output is available (normal mode) Green flashing: Test signal(2) is generated or RF Maintain mode Off: No critical error detected Red fixed : Module failure Red flashing : Primary input failure(3) or primary clock reference(5) loss (10 MHz or PPS in case of ext 10MHz + ext 1PPS primary selection) Table 10: LED Analysis

(1) If primary input is detected but any condition for "Mute on TS error" is met, the input LED is flashing.

(2) PRBS, Sine, or any special test.

(3) Except in case of PRBS or Sine test mode.

(4) In automatic mode, if the primary input is detected, the input LED is fixed at whatever the secondary input status is. 3/10/2017 MPD-1611291-A Page 84/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter

(5) Alarm due to primary clock reference loss is defined in a specific table. 6.4.2 Contact the technical support Before contacting Hitachi-Comark Technical Support Team, please ensure you can provide them with following information:

o The type, hardware and software version and Serial number of the equipment o The delivery date of the equipment o Symptoms of the breakdown or a description of the problem HITACHI-COMARK CUSTOMER SUPPORT Tel. + 800-345-9295 Email : support@comarktv.com The technical support team of Hitachi-Comark is present to answer your questions and try to understand the problem that may be encountering with your exciter. They will be able to help you to identify the problem or give you recommendations on how to return the unit to the factory. 3/10/2017 MPD-1611291-A Page 85/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 86/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Appendix A GPS Installation Recommendations 3/10/2017 MPD-1611291-A Page 87/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 88/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter While doing GPS installation and setup for a product with an embedded GPS receiver, it is highly recommended to respect the following conditions:

Considering:

Pgps as the power of the incoming signal

(nominal value over the covered area) Ga as the gain of the dedicated GPS antenna Gc as the losses of the several RF components

(cable, connectors,) Gt as the total Gain of the RF chain Gt = Ga + Gc The user shall respect the following condition:

20 dB Gt 35 dB In order to fulfill this condition, and if Gt is not sufficient, the user can also add a line Amplifier, as shown in the drawing below:

with Gt = Ga + Gc + Gamp Warning: For the GPS reception to be optimal, it is highly recommended to place the Antenna in an open, free space (top of the building, etc.) MPD-1611291-A 3/10/2017 Page 89/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 90/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter Appendix B Example of GPS Antenna 3/10/2017 MPD-1611291-A Page 91/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 92/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 93/94 USER MANUAL MPD-1611291-A EXACT-V2 High End Rack Modulator / Exciter 3/10/2017 MPD-1611291-A Page 94/94

 

 

 

 

 

 

$ | HITACHI KOKUSAI ELECTRIC 1 FCC ID:LYIEC702MP

|MODEL: EC-702MP_ORIGIN: USA _ es t | et 4) Cre S

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February 27, 2019 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, Aethee Vice President of Engineering COMARK lees Hitachi Kokusai Electric Comark LLC 104 Feeding Hills Road Southwick MA 01077 USA TBarbeau@comarktv.com Tel: +1 413 998 1124 www.comarktv.com

 

 

$Hitachi Kokusai Electric Comark LLC 8/26/2020 Communications Commission

& Evaluation Division Federal Authorization 7345 Oakland Mills Road Columbia, Maryland 2 RE: Long-Term 21046 Confidentiality Request for EC-702MP FCC ID LYIEC702MP To Whom It May Concern:

serves as an official This letter 47.We have requested that the following application be permanently withheld request from public review. for confidentiality under 0.457(d) and 0.459 of CFR documents required to be submitted with this Schematics Parts List Internal Block Diagram Photos detailed system and equipment description contain which manufacturer/applicant These documents about the product, custom design and otherwise, would not release basis from which future technological information these documents professional broadcast transmitters that are pe facilities, and as such are not readily accessi s and related to be proprietary, considers to the general public. would give our competitors an unfair advantage and that the disclosure of the information in products will evolve, manufacturer/applicant to its competitors, in the market. These are confidential, ble to the public. would be of benefit information Since this design is a feels that this and a rmanently installed in television broadcast in these documents The information necessary, or Proprietary provided as an exhibit to this submission. Information", in compliance are not part of the user manual, and are supplied only if with the requirements of our standard terms and conditions of Article 7, "Disclosure for sale. This article is And Use of Confidential Please contact me if there is any information you may need.

/) Thomas R. Barbeau Vice President of Engineering Kokusai Hitachi 104 Feeding Hills Southwick, Electric Road MA 01077 - USA Comark, LLC Tel: (413 ) 998-110 0, Fax. (413) 9 www.comarktv.com 98-1194 COMARK

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operational Description:

The EC-702MP digital transmitter system is an up to 170W average power (when using ATSC 1.0 8VSB modulation), 150W average power (when using ATSC 3.0 COFDM modulation) that consists of a Hitachi Kokusai Electric Comark (HKCM) Exact V2 digital exciter, Hitachi Kokusai Electric Linear (HKL) CM-8001 Drive controller, one (1) HKL GV40033A Amplifier, a passive hybrid combining system, an HKL 40243 Low pass filter, and a Com-Tech FC6D60C 6 Pole Mask Filter (or equivalent or more stringent filter). The final stage of amplification operates at 50VDC and 20A at full power. This system is used to provide an ATSC 1.0 (8VSB) or ATSC 3.0 (COFDM) modulated signal over the UHF channels 14 through 36 in a manner consistent with FCC Part 74. Output power from, maximum power to 0W depending on the modulation standard, is controlled via attenuator circuitry in the CM-8001 Drive controller.

 

 

RF Tuning Procedure for Transmitters Using Exact V2 Exciter 1. Overview Panel 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. 2. Basic Setup 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 Exciters webpage and configure the correct output modulation type, bandwidth, and frequency in the RF Output Parameters tab. 3. Connecting Feedback Signals 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. Fig. 1 Rear panel 1 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 2 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 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 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. 3 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 amplifier power. This shoulder optimization involves a MER / SNR performance reduction. The user must find the best trade-off for shoulder performance vs. MER/SNR performance. This parameter can vary in a range from 0 (Off or None) to 255 (Max). When the Crest Factor Optimization parameter is increased, the shoulder level becomes better. At the same time, the MER performance decreases. As explained earlier, a trade-off between the two is necessary to obtain the best overall optimization and desired signal performance. There is a usable range for the Crest Factor Optimization parameter between about 50 and 150. Below 50 on this setting not too much effect is noticed. Above 150 on this setting the MER

/ SNR performance will likely be too far degraded. 4