COBHAM M2ECHPT User manual

Messenger2EnhancedCompactHigh-PowerTransmitter
(M2ECHPT)
Includes VEPA or Standard Power Amplifier
OPERATIONSMANUAL
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CobhamTacticalCommunicationsandSurveillance
1916PalomarOaksWay,Suite 100,Carlsbad,CA 92008
Tel: [phone]
FAX: [phone]
GMSInc . doingbusinessasCobhamTacticalCommunicationsandSurveillance
www.cobham.com/tcs

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TableofContents
1. Important Warning and General Safety Information ...............................................................5
Acronyms.......................................................................................................................................7
2. Introduction................................................................................................................................8
2.1 About theManual.........................................................................................................8
2.2 Warranty......................................................................................................................8
2.3 Safe OperatingProcedures .........................................................................................8
3. General System Information.....................................................................................................9
3.1 Overview .....................................................................................................................9
3.2 Applications.................................................................................................................9
3.3 Key SystemFeatures............................................................................................................9
3.4 Theory ofOperation...................................................................................................10
3.5 PowerAmplifiers(StandardorVEPA)........................................................................13
3.6 Included Items...........................................................................................................13
4. Hardware Overview..................................................................................................................14
4.1 Front Panel................................................................................................................14
4.2 Rear Panel...........................................................................................................................15
4.3 M2ECHPT Connectors..............................................................................................15
4.3.1 RF Output..................................................................................................................................15
4.3.2 DC IN...............................................................................................................................16
4.3.3 DATA/CONTROL ......................................................................................................................16
4.3.4 Audio...............................................................................................................................17
4.3.5 Video1/Video2(SDIinput, Compositeinput&ASIinput)...................................................17
4.3.6 ASI OUT...............................................................................................................................17
4.3.7 KLV TIME SYNCIN. ......................................................................................................................18
5. Software Overview...................................................................................................................19
5.1 Product Control&StatusMonitoringApproach ..........................................................19
5.2 System Requirements ...............................................................................................19
5.3 Connection................................................................................................................19
6. Initial Check Out.......................................................................................................................24
6.1 Getting Started ..........................................................................................................24
7. Specifications...........................................................................................................................26

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List ofTables
Table1 DCIN ............................................................................................................................................. 16
Table 2 DATA/CONTROL ............................................................................................................................................. 16
Table 3 Audio Connections ............................................................................................................................... 17
ListofFigures
Figure 1 M2ECHPTLink ............................................................................................................................11
Figure 2 Content Collection Format.................................................................................................12
Figure 3 M2ECHPT Front View ......................................................................................................14
Figure 4 Rear Panel Connectors .....................................................................................................15
Figure 6 WelcomePage..................................................................................................................20
Figure 7Windows Security Login ....................................................................................................20
Figure 8 MAIN Page –LAN Interface...............................................................................................21
Figure 9 Configuration Groups Menu...............................................................................................22
Figure 10High Power Link Setup ....................................................................................................25
Figure 11InterfacingPC to M2ECHPT............................................................................................32
Figure 12Window’s Start Button.........................................................................................................33
Figure13Control Panelw/Network& InternetCategory..................................................................34
Figure 14Network Adapter Settings................................................................................................35
Figure 15Local Area Connection Icon.............................................................................................36
Figure 16Internet Protocol Version 4 ..............................................................................................37
Figure 17 IP AddressSetup .......................................................................................................................38
Figure 18Entering aStatic IP addresss...........................................................................................39
List ofAppendices
Appendix A - IP Static Addressing and Interfacing to a Personal Computer ..................................................... 32
A.1. Static Addressing................................................................................................................................ 32
A.2. DHCP(Dynamic Host Configuration Protocol).......................................................................... 40

GMSInc.doingbusinessasCobhamTacticalCommunicationsandSurveillance
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RevisionHistory
Revision
Date
Main Changes from Previous version
Edited by
Checked
X1
29June2012
Initial Release
T.G.
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1.ImportantWarningandGeneralSafetyInformation
ThefollowinginformationispresentedtotheoperatortoensureawarenessofpotentialharmfulRF
(radiofrequency) exposure andgeneral hazards. Withregardstopotentialharmful RFelectromagnetic
fieldsthetextbelowisonlyabriefsummaryhighlightingthepossiblerisksandhowtominimizeexposure.
ThesummaryisbasedonOETBulletin65“Evaluating CompliancewithFCC Guidelinesfor Human Exposure
to Radiofrequency Electromagnetic Fields”
(1)
. The user should carefully read and comprehend the following
beforeoperatingtheequipmentandforadditionalindepthinformationrefertoOETBulletin65.
1. FCChassetguidelines
(1)
forevaluatingexposuretoRFemissionsthattheusermustbeawareof
when operating the microwave transmitter. The maximum power density allowed at 1500–
100,000 MHz is5mW/cm2 foroccupational/controlledexposure*and1mW/cm2 forgeneral
population/uncontrolled exposure**. These are the limits for maximum permissible exposure (MPE)
ascalledoutintheFCCguidelines(fortheabovementionedfrequencies).
2. ExposureisbasedupontheaveragetimespentwithintheRFfieldwithagivenintensity(fieldunits
in mW/cm
2
). Hence it may be controlled (or at least minimized) by observing the safe distances
andtimeexposed. SafedistancesarecalculatedfromequationspredictingRFFields(3).
3. Thetransmitteriscapableofharmfulradiationifsafeoperatingpracticesarenotobserved.
*”Occupational/controlledexposurelimitsapplytosituationsinwhichpersonsareexposedasaconsequence of
theiremploymentandinwhichthosepersonswhoareexposedhavebeenmadefullyawareofthepotentialfor
exposureandcanexercisecontrolovertheirexposure. Occupational/controlled exposurelimitsalsoapplywhere
exposureisofatransientnatureasaresultofincidentalpassagethroughalocationwhereexposurelevelsmaybe
abovegeneralpopulation/uncontrolledlimits(seebelow),aslongastheexposedpersonhasbeenmadefullyaware
ofthepotentialforexposureandcanexercisecontroloverhisorherexposurebyleavingtheareaorbysomeother
appropriate means……..”
(2)
**“Generalpopulation/uncontrolled exposure limitsapplytosituationsinwhich the generalpublicmaybeexposed
orinwhichpersonswhoareexposedasaconsequenceoftheiremploymentmaynotbemadefullyawareofthe
potentialforexposureorcannotexercise controlovertheirexposure. Therefore,membersofthegeneralpublic
wouldalwaysbeconsideredunderthiscategorywhenexposureisnotemployment-related,forexample,inthecase
ofatelecommunicationstowerthatexposespersonsinanearbyresidentialarea.“
(2)
(1)
OETBulletin65,AppendixATable1LimitsforMPE
http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf
(2)
OETBulletin65,page9,definitionsoftypesofexposure
http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf
(3)
OET Bulletin65,page19, Equationsforpredicting RFFields
http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet65/oet65.pdf
4. Antennaminimumsafeoperatingdistanceis20cm(8inches). Itistheresponsibilityofthe
qualified end-user of this intentional radiator to control the safe distances and exposure limits to
bystanders.
5. Do not substitute any antenna for the one supplied or recommended by the manufacturer. The
installerisresponsibleforensuringthattheproperantennaisinstalled.
6. Itshouldbenotedthatthisdeviceisanintentionalradiator,hence:
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Changes or modifications not expressly approved by the party responsible for
compliancecouldvoidtheuser’s authoritytooperatetheequipment.
NOTE: ThemanufacturerisnotresponsibleforanyradioorTVinterferencecausedby
unauthorized modifications to this equipment. Such modifications could void the
user’sauthoritytooperatetheequipment.
7. DC power to the unit should never be applied until the antenna (or other suitable load) has been
attached to the RF output connector. Safe operating procedures must be observed when unit is
transmittingintoan antenna (seesections1&2 above).
8. Electro-StaticDischarge(ESD)precautionsshouldbeobservedasasafepractice.
9. Thetransmitterwillgenerateconsiderableheatandistheresponsibilityoftheendusertoproperly
heatsink thedevice before using.
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Acronyms
This section lists and describes the various acronyms used in this document.
Name Meaning
16QAM
16-state Quadrature Amplitude Modulation
64QAM
64-state Quadrature Amplitude Modulation
A/V
Audio/Video
AES
Advanced Encryption System (32bit)
ASI
Asynchronous SerialInterface
BDC orBDCC
Block downconverter
COFDM
Coded Orthogonal Frequency DivisionMultiplexing
CVBS/Y
Composite video/Luminance with S-video
C
Chromavideo
D/C
Down-Converter
FEC
Forward ErrorCorrection
GUI
GraphicalUserInterface
HD
HighDefinition
I/O
Input/ Output
Kbaud
Kilobaudpersecond
Kbps
Kilobits persecond
Mbps
Megabits persecond
MER
Modulation ErrorRate
MPEG
MovingPictureExpertsGroup
MSR
Messenger Smart Receiver
M2D
MessengerTwoDecoder
M2T
MessengerTwoTransmitter
M2L
MessengerTwoLink
NTSC
National Television System Committee
PAL
PhaseAlternationLine
QPSK
QuadraturePhaseShiftKeying
RF
Radio Frequency
RX
Receiver
S/N
Signal-to-Noise Ratio
THD
Total Harmonic Distortion
SD
Standard Definition
SDI
Serial Digital Interface
TX
Transmitter
VDC
Volts (DirectCurrent)
VEPA
Very Efficient Power Amplifier
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2.Introduction
2.1 About the Manual
CobhamUserManualsfocusonprovidingtheenduseraneasytounderstandoperationalinstructions
to quickly setup and deploy the equipment. The Cobham Technical Operation Manuals focus onthe
technical details and setup of the equipment. The Technical Manuals also provide a more in depth
explanation ofthe settings and specifications ofthe equipment that technicians can use to verify the
operationalstatus.
2.2 Warranty
Cobham offers a 12month standard product warranty. During this period, should the customer
encounterafaultwiththeequipmentwerecommendthefollowingcourseofaction:
Check the support section of the website for information on that product and any
software/firmware upgrades.
 Iffaultpersistscalloursupportlineandreportthefault.Iffaultpersistsandyouareinformedto
return the product, please obtain an RMA number from the Cobham support department or
websiteandshiptheequipmentwiththeRMAnumberdisplayedandadescriptionofthefault.
Pleaseemailthesupportsectiontheairwaybill/consignmentnumberfortrackingpurposes.
Dependingonthenatureof thefault,Cobhamstrivestorepairtheequipmentandreturnittothe
customer within 14 days of the item arriving at our workshops. Obviously it is impossible to
accommodate for all types of faults and to manage 100% replacement part availability; delays are
sometimesinevitable.
Please contact Cobham for details of packages that can be tailored to meet your individual needs,
whethertheyareserviceavailability,technicaltraining,localgeographicsupportordedicatedspares
holdings.
2.3 Safe Operating Procedures
Ensure that the power supply arrangements are adequate to meet the requirements of
M2ECHPT product.
 Operatewithintheenvironmentallimitsspecifiedfortheproduct.Thetransmitterwillgenerate
considerableheatanditistheresponsibilityoftheendusertoproperlyheatsinkthedevice
before using.
Electro-StaticDischarge(ESD)precautionsshouldbeobservedasasafepractice.
Onlyauthorized,trainedpersonnelshouldopentheproduct.Therearenofunctionsthat
requiredtheUsertogainaccesstotheinterioroftheproduct.
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3. General System Information
3.1 Overview
TheM2ECHPTisasecondgenerationAVCHD/SDCOFDMtransmitterthatcombinesallthefeatures
and capabilities of Cobham Surveillance’s (CS’s) Messsenger 2 AVC HD/SD Transmitter with the
additionalfeatureslistedintheKeySystemFeaturessectionbelow.KeyfeaturesincludeoptionalDual
Audio/Video/Dataprocessingwithendtoendsystem-levellatenciesofdownto
~
44mSwhenusedwith
CSReceiver/Decoders.
TheUltra-lowsystemlatencygreatlyenhancesreal-timeoperatingwhenthelinkisusedintimecritical
situationslikepilotingUnmannedAerialVehicles(UAVs)orUnmannedGroundVehicles(UGVs)orin
threatresponse. OptionalDualvideoprocessingenables3Dcontentcollectionwhichprovidesdepth
perception and greater control for UGV applications requiring fine spatial operations like explosive
device de-arming. The M2ECHPT’s 3D capability also enhances Entertainment, Sports, and ENG
applications.
The M2ECHPT can optionally provide time-correlated KLV-1 and KLV-2 META data processing
1
thatis
used in Airborne Surveillance Applications and Geospatial determination. The META data can be
extracted from the SDI/HD-SDI video’s ancillary data space orinput on a separate RS-422interface.
3.2 Applications
The M2ECHPT Transmitters can be used inthe following environments:
 Helicopter Links
UAV/UGV Applications
Audio/Video Surveillance
Airborne/Ground Surveillance
3.3 Key System Features
Up to15W Linearized Output Power
AVCHD/SD Encoder(upto 1080p 30FPS)
Supports Dual Audio/Video/Data programs
oMulti-Camera Support
o3D Support
oDual3GbpsHD-SD/SDIandAnalogSDVideoInputInterfacesOption
RobustLinkPerformancewithCOFDMModulation(DVB-T2Kor4K3carriers)
BandwidthsDVB-T6,7,&8MHz(STD)&12,14 &16MHz(4K3)
 Dual L/S BandCapability
 No External Heat Sink Required
OutputFrequency:0.9to 7 GHz(In-Bands)
Low System Latency(~44mS)4,5
SecureScramblingEncryptionOption (128/256-bitAES-C)
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Analog and EmbeddedAudio
TransportStreamSteamingviaLAN orASIorSerialInterface
User DataOption
ControlviaLANWeb ServerorSerialInterface
 +12Vdc or +28Vdc Option
CompanionCOFDMReceiverwithPost-DetectDiversityReception
3.4 Theory of Operation
The M2ECHPT Series “Messenger Two Series” product line incorporated AVC/H.264 compression
technologywithultra-lowdelaythatcoversalltheSDandHDformatsupto1080p. AVCcompression
providesdramaticallyincreasedcompressionefficiencyoverMPEG-2whichallowsourlinktoprovide
superiorcoverage overa wider operatingrange!
There are two core hardware configurations for M2ECHPT. The SD/HD-SDI configuration accepts up to
two Standard Definition (SD) orHigh Definition (HD) 4:2:2 Digital Video (SD/HDSDI) oranalog
composite Video and Analog Stereo Audio Inputs (Mic or Line Level) and Embedded Audio (up to a
totaloftwostereopairsorfourmonochannels)setorprograms. Micbiasisalsoprovided.Inthe
HDMIconfiguration
*P4
,theSDI/HD-SDIinterfacesarereplacedwithtwoHDMIinterfacesthataccept
bothdigitalvideo andaudio. DualSDCompositeVideoinputsarealsoprovidedwiththe HDMI
configuration
Both Video programs can be compressed according to the Advanced Video Compression(AVC)/H.264
(HD/SD)specificationwiththesameordifferentframeresolutions,ratesandformats.Thelow-latency
AVC Encoder supports the Baseline Profile with extensions with resolutions from 480 to 1080 with
supportforeitherinterlacedorprogressiveformats.TheAudioiscompressedusingMPEG-1Layer2
compression.Lowrateuserdataupto115KBaudcanbeoptionallysupported.Bothprograms,Audio,
Video and User Data Packets PES Streams are multiplexed with Basic Service Data toindicate their
respectiveServiceNames. Iftwoprogramsareactive,thetwotransportsteamsaremultiplexedintoa
singlemulti-programstream.ThestreamcanbeoptionallyscrambledwithAESscramblingsystemto
provide protection in sensitive applications. User selections for all transport stream IDnumbers and
servicenamesareprovided.
The M2EPHT is a complete system with Audio/Video encoders/compressors and all the required
processingtotransmitthemodulatedsignalwithupto15W(banddependent). CS’ COFDMwireless
equipment provides a standard robust digital modulation system known as Coded Orthogonal
Frequency Division Multiplexed (COFDM) that provides frequency diversity and powerful Forward Error
Correction (FEC) algorithms. This modulation is ideal for transmitting over water or into urban
environments which typically have high multi-path interference.
OurMessengerReceiversincludeanoptionforSpatialMaximalRatioPre-DetectDiversitytocombat
multipathreflectionsfoundinindoor/urban environments. Cobham’s Messengersixoreightchannel
receivers with associated Messenger Antenna Arrays (MAAs) provide wide reception range without the
hassleandcostofanautotrackingantennasystem.TheMessengerseriesTx/Rxproductsprovidea
robustwirelesslinkthatiseffectiveagainstthemultipathinterferenceexperiencedbyanalogsystems
andprovidesreliabledatatransmissioninthemostdifficultofterrains.
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Figure1 M2ECHPT Link
In 2K Mode the M2ECHPT uses standard DVB-T coding and modulation. DVB-T stands for Digital Video
Broadcasting —Terrestrial; it is the DVB European-based consortium standard for the broadcast
transmissionofdigitalterrestrialtelevisionthatwasfirstbroadcastintheUKin1997.Thissystem
transmits compressed digital audio, video and other data inan MPEG transport stream, using coded
orthogonal frequency-division multiplexing (COFDM or OFDM) modulation.
TheOFDMschemeworksbysplittingthedigitaldatastreamintoalargenumberofslowerdigital
streamseachofwhichdigitallymodulateasetofcloselyspacedadjacentcarrierfrequencies.COFDM
goesastepfurtherbyusinga“Coding” schemetomapthedataontothemultiplecarriersinawaythat
maximizesrecoveryfromlinkerrors.ThiscodingincludesForwardErrorCorrectionwithConvolution
Interleaves’ andReedSolomonencodingalongwithcarefuldistributionofthedataontothemultiple
carriers.COBHAMhaschosentouse2Kcarrierinwhich1,705carriersactuallycarrythepayloadthat
areapproximately4KHzapart.DVB-Toffersthreedifferentmodulationschemes(QPSK,16QAM,
64QAM).
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4K CarrierMode
The4KHIGH-THROUGHPUTOPTIONenablesuser-selectableoptionstosetbandwidthsfrom6MHzto
16MHzandtodoublethethroughputofourstandardM2T(Upto63Mbps!).In2Kcarriermodethe
systemwouldneedtooperatein64-QAMtosupportdualprogram/videooperations.Using4Kcarriers
andthe16MHzbandwidth,thelinkcansupportdualprogram/videoHDoperationusing16QAM.This
increaseslinkrobustnessandprovidesanadditional13.5dBofgainwithalinkmarginincreasegreater
than 4.7 x inoperating range! for the same throughput rate in a standard HD MPEG-2 DVB-T system!
Withthe4K HIGH-THROUGHPUTOPTIONyoucanrun with fully DVB-T compliant 2Kcarriers and
bandwidthsof6,7,or8MHz.Whenyouswitchto4Kcarriersyoucanselect12,14or16MHz
bandwidth.
LAN/IPPort
TheM2ECHPTcontaina10/100BaseTLANinterfacethatcanbeusedbothforControl&Status
monitoringandforTransportStream(TS)streaminginandoutofthedevice.TheIPaddresscanbe
assigned automatically via aDHCPserverorassignedaStaticIPaddress. Control &Statusmonitoringis
accomplishedviaaWEBbrowserapplication.TSscanbesentoutorinviaUDP/IPorRTP/UDP/IP
transfer protocols.
3DSupport
3DisaverynewareaintheBroadcastindustry.Fromacontentcollectionstandpointitisnormally
accomplished with two separate cameras that are GEN-LOCKED together outputting two separate
Video signals.
Figure 2 Content Collection Format
AES-C Scrambling
TheAES-CScramblingoptioncanbeusedtoaddsecuritytoyourdatatransmission.Thesystem
scramblesthepayloadportionoftheTSpackets.OnlytheTSheaderremainsunscrambledto
enable operation with standard DVB-T receivers. The 128 bit-scrambling key is entered through the
M2ECHPT’scontrolinterface.Theusercanenableordisablethescramblingaswellaschoosingif
thekeyisstoredwithintheTxornotviaCobham’s LANWEBPageGUI.Encryptionon/offisalso
availablefromthelocalcontrolpanel.
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3.5 Power Amplifiers (Standard orVEPA)
TheM2ECHPTcomeswitheithertheVEPAortheStandardpoweramplifier.TheVEPA(VeryEfficient
Power Amplifier) is Cobham/GMS’ newest design specifically targeted for COFDM modulation formats
becauseofitshighlinearityandefficiency.MostoftheconnectionsusingeithertheVEPAorthe
StandardPAare the same. Where there aredifferences they are pointed outin the manual. In
additioniftherearedifferencesinspecificationstheyarealsonoted.
3.6 Included Items
NOTE: BasedoncustomerapplicationCobhammaydeliverareceivingsystem,additionalcablesand
antennas. ContactCobhamforfurtherinformation.
Thedeviceispre-configuredbyCobhampriortoshipment(basedoncustomerrequirements),thusis
readytowork“rightoutofthebox”.
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4. Hardware Overview
The basic M2ECHPT transmitter hardware configuration isoutlined in this section:
4.1 Front Panel
Thefrontpanelconsistsof3fansdesignedtocooltheunit.
Figure3 M2ECHPTFrontView
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4.2 Rear Panel
TherearpanelisshowninFigure4below.Theconnectortypesandpinoutsarediscussedinthe
following section.
Figure 4 Rear Panel Connectors
4.3 M2ECHPT Connectors
Note: TheonlydifferencebetweentheVEPAandStandardpoweramplifieristhatthe“RFON”LED
indicatorisnotusedwiththeVEPApoweramplifier. Allotherconnectionsarethesame.
4.3.1 RF Output
TheM2ECHPTusesafemale“N” typebulkhead connectorforits“RF OUTPUT” port.
Note: Transmitters should not be powered on without a load. Doing so could cause
damagetotheoutputPA.Aproperheatsinkisalsorequired.
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4.3.2 DC IN
ConnectorType:4pinPTO,Male.
The M2ECHPT accepts +12dc or +28Vdc input power (depending on configuration). GMS cable
(780-C0219) is used to connect to the DC IN connector. See drawing 100-C0219for power
connections (AppendixB).
Pinoutsforthisconnectorareshowninthetablebelow.
Table1DCIN
Connector Name
Connector Type
Pin
Function
DCIn
PTO-4
A
+VDC
DCIn
PTO-4
B
+VDC
DCIn
PTO-4
C
GND
DCIn
PTO-4
D
GND
4.3.3 DATA/CONTROL
Connector Type: 19pin PTO, Male
TheData/Controlbringsoutvariousinput-outputconnectionssuchasEthernet/LANconnections,
RS-232Data/TX/Rxconnections,RS-422connections,etc.(seetablebelow).
Pinoutsfortheconnectorareshowninthetablebelow.
Table 2 DATA/CONTROL
Connector Name
Connector Type
Pin
Function
Data/Control
PTO-19
A
GND
Data/Control
PTO-19
B
RS-232 DATA RX1
Data/Control
PTO-19
C
RS-232DATATX1
Data/Control
PTO-19
D
RS-232 DATA RX2
Data/Control
PTO-19
E
RS-232DATATX2
Data/Control
PTO-19
F
RS-422_A P
Data/Control
PTO-19
G
RS-422_A N
Data/Control
PTO-19
H
GND
Data/Control
PTO-19
J
RS-422_BP
Data/Control
PTO-19
K
RS-422_B N
Data/Control
PTO-19
L
Conditioned DC+
Data/Control
PTO-19
M
Conditioned DC-
Data/Control
PTO-19
N
RESET
Data/Control
PTO-19
P
FPGAGPIO0
Data/Control
PTO-19
R
GND
Data/Control
PTO-19
S
ENET RDP
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Data/Control
PTO-19
T
ENETRDN
Data/Control
PTO-19
U
ENETTDP
Data/Control
PTO-19
V
ENET TDN
4.3.4 Audio
ConnectorType: 10pinPTO,Female
Pinoutsforthisconnectorareshowninthetablebelow. Audioinputscanbeconfiguredassingle
ended (Mic or Line level) or differential. Various configurations are available depending on the
wiring of the connections and the software setup ofthe audio selections. Consult factory for pre-
made audio cables.
Table3PWRDETECT/AudioConnections
Connector Name
Connector Type
Pin
Connection
PWR Detect/Audio
PTO-10
A
Audio1DiffP
PWR Detect/Audio
PTO-10
B
AudioGnd
PWR Detect/Audio
PTO-10
C
Audio1 DiffN
PWR Detect/Audio
PTO-10
D
AudioGnd
PWR Detect/Audio
PTO-10
E
Audio1Bias
PWR Detect/Audio
PTO-10
F
Audio2Bias
PWR Detect/Audio
PTO-10
G
Audio2DiffP
PWR Detect/Audio
PTO-10
H
AudioGnd
PWR Detect/Audio
PTO-10
J
Audio2 DiffN
PWR Detect/Audio
PTO-10
K
AudioGnd
4.3.5 Video1/Video2(SDIinput,Compositeinput&ASIinput)
ConnectorType:BNC-F75ohm
ThetwovideoconnectorsprovideaninputforSD/HD-SDIvideostreams,Compositevideo
streamsorcanbeusedaninputfor ASI DVBcompliantTransportStreams.Thevideoconnectors
arebydefaultabletohandleanSD/HD-SDIorCompositeinput.HoweverifusinganASIinputthe
transmitterneedstobeswitchedfromaSDIinput(orCompositeinput)toanASIinputmode.This
is done using the LAN WEB based GUI control software (see software overview section Error!
Reference source not found. .1).TheSDIinputbit rateis270MbpsforStandardDefinitionand
1.485GbpsforHighDefinition.When usingtheinputasanASI input ensure the transmitter
channelrateissetapproximately10%higherthantheASIstreamratecomingintothetransmitter.
4.3.6 ASI OUT
ConnectorType:BNC-F,75ohm
ThisconnectorprovidesanoutputforDVB-ASITransportStreams. Theoutputbitrateis270
Mbps.TheTransportStreamdoesnotincludethe SItable,User-Data orAESencryption whichis
addedlaterintheprocessng chain.
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Itcanbeusefulasamonitoring/troubleshootingtoolorasastandaloneDVB-ASITransportStream
outputwithratesupto50Mbps.
Asamonitoring/troubleshootingtooltheusercanverifythecorrectoperationoftheencoder–
decoderportionofthelinkbyrunning thisoutputdirectlyintothedecoder’s ASIINPUT,essentially
bypassingtheRFportionofthelink.
AsastandaloneTransportStreamoutputtheencodercanbeplacedintoa“Encoder”onlymodein
which the ASI Transport Stream rates can run as high as 50Mbps (see software section 5.1).
4.3.7 KLVTIMESYNCIN*P5
ConnectorType:BNC-F,75ohm
Thisinputisusedtoprovidetime-correlatedKLV-1andKLV-2METAdataprocessingthatisusedin
Airborne Surveillance Applications andGeospatial determination.
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5. Software Overview
5.1 Product Control & Status Monitoring Approach
Cobhamtransmittersprovideprogrammablepresetsorset-upgroupsthatcanbeconfiguredthrougha
WEB-basedcontrolandstatusinterfacethatlaunchesthroughtheLANinterfacefromthetransmitter.
Set-up“Groups” areselectedthroughtheWEB-basedinterface. TheM2ECHPTallows20set-upgroups.
ThissectionbrieflytouchesontheWEB-basedcontrol.Fordetailedoperationtheusershouldreferto
the100-M0171“Messenger 2TransmitterEnhanced” OperationsManualwhichcanbefound
on-lineat
http://www.cobham.com/about-cobham/aerospace-and-security/about-us/tactical-communications-
and-surveillance/carlsbad/products/cofdm-transmitters/M2ECHPT.aspx
5.2 System Requirements
TheWEBControlandStatusinterfacecanbelaunchedfromseveralWEBExplorerinterfacessuchas
Microsoft’s InternetExplorer,Mozilla’s FireFox,andGoogle’s Chrome.
The WEB interface requires the WEB browsers to support JavaScript. The WEB interface has been
tested with Windows Internet Explorer 8, Firefox 8.0 and some versions of Google Chrome.
5.3 Connection
The IP address of the transmitter must be known before launching an internet browser. The
M2ECHPT’s are shipped out with a static IP address of 192.168.1.36. The M2ECHPT only supports
IPv4 addressing. Using this address and an internet browser the user can access the internal
M2ECHPT’s WEBserver.
Using a PC open aninternet browser and type the IPaddress ( 192.168.1.36 ) into the address bar of
the internet WEB browser (also reference Appendix Awhich goes into more detail regardingIPstatic
addressingandinterfacingtoapersonalcomputer). Thewelcomepageopens,seeFigure5.Clickon
the CONTINUE button.Aloginpromptwindow opensasshowninFigure6.TypeintheUSERNAME
and PASSWORD; the defaults are “ admin ”, “ admin ”. The main menu window opens. See Figure 7
below.
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Figure 5 WelcomePage
Figure 6 Windows Security Login
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