03-04/2013TELEsince 1981The World’s Largest Digital TV Trade Magazinewww.TELE-audiovision.comCompany ReportJIUZHOUYongjun Zhang Reveals theUnknown Pros and Consof Android-based ReceiversTest ReportHORIZON NANO S2Paul Pickering Introducesan Incredibly Easy-to-UseSatellite MeterINTERNATIONALSatelliteSmart TVIP/WebTVStreamingaudiovisionB 9318 ETest ReportGLOBALINVACOMTest ReportTSINGHWA GT-278Test ReportTENOWJames Liu Integrates MultimediaInto a PC Card Perfectly Suitedfor Satellite EnthusiastsCompany ReportSAT-LINKQingZhang Lin Embracesthe Signal Analyzer Marketwith Many New ModelsAmazing:Optical SignalSplitting to the Extreme!”DTMB Receiver with Excellent Software03-042013
1202-03/2012www.TELE-audiovision.com/12/03/azbox-meAZBox METoday‘s absolutebest Linux Receiver10-11/2011www.TELE-audiovision.com/11/11/tenowTenow TBS6984Made for TV addicts who can neverwatch and record enough channels.08-09/2009www.TELE-audiovision.com/09/09/globalinvacomGlobal Invacom Optical LNBThe first worldwide optical satellitereception and transmission systemTELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.com
MAGAZINE13www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志www.TELE-audiovision.com/12/07/amikoAMIKO ALIEN 2Unbeatable combination of features andfunction – for excellent viewing pleasure!06-07-08/201211-12/2012www.TELE-audiovision.com/12/11/jiuzhouJIUZHOU DTP2100Cutting-edge receiver thanksto Android operating system
14 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comTsinghwaGT-278TEST REPORT该独家报道由技术专家所作DTMB Receiver
15www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志• very fast channel switching• quick OSD build-up and reaction• PVR functionality if storagemedium is connected• excellent multimedia capabilities
03-04/2013www.TELE-audiovision.com/13/03/tsinghwa0.5316 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comTEST REPORT DTMB ReceiverTsinghwa GT-278Rock solid receiver withexcellent responsivenessDTMB Receiverwith Excellent SoftwareAs soon as we had un-packed the new TsinghwaGT-278 we were met withits classic yet elegant ap-pearance. The front panel ischaracterised by an easy-toread segment display, sta-tus LED as well as a totalof six buttons for operatingthe receiver whenever theremote control is misplacedor its batteries are empty.In standby mode the seg-ment display shows thecurrent time, and when thereceiver is turned on youcan either see the channelnumber or information onthe current operating mode(recording, playback, etc.).A USB 2.0 port is alsoavailable on the front pan-el, and you can imaginethat this was one featurewe were immediately tak-en too. Yes, you guessedit: The GT-278 can also beused as a fully-fledged PVR!Moving on to the backpanel, we find the tunerinput complete with loop-through output using RFsockets, an HDMI port, sixRCA jacks for YUV, stereoaudio and CVBS, a coaxoutput for digital audio anda mechanical power switchto disconnect the receiverfrom the mains supply.The receiver measures 26x 20 x 4.5 cm, which puts itright in the midsize range,so to speak. The remotecontrol that comes withthe set-top box sits nicelyin your hand and sports aconvenient layout as well aspleasant surface materials.All buttons are easy toreach and are arranged ina way that makes for a verystraightforward user expe-rience. In summary, the de-sign and build quality of thisproduct left us with a verygood first impression.When the receiver isswitched on for the firsttime a dedicated menu isactivated that is used toselect the desired OSD lan-guage and the current loca-tion. It is here that an initialautomatic channel searchcan be launched as well.As far as the location set-tings are concerned, usersare left with only two op-tions: Mainland China orHong Kong. The channelsearch that follows com-pletes the basic setup and
1234518 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comin our case took a little overtwo minutes to read all ac-tive frequencies. Once thatjob is completed the GT-278switches to the first avail-able channel.We’ll deal with featuresand functions for everydayuse in a moment, but firsthere is an overview of themain menu and all configu-ration options it offers.A total of seven entriesare available: Program,Picture, Channel Search,Time, Options, System andMultimedia.Under Program it is pos-sible to manage and editall entries of the channellist – namely delete, move,PIN-lock or add them to afavourites list. This is wherethe colour-coded function1. GT-278 start screen2-3. Initial installationscreen of the GT-2784. Automatic channel search5. Main menu6. Using the colour-codedfunction keys the channellist can be edited with greatconvenience7. Apart from 1080i thereceiver supports thefollowing resolutions: 576i,576p, 720p and 1080p8. A manual channel searchis available alongside thestandard automatic search9-10. Setting the time11. Digital audio is providedas PCM or RAW12. The receiver softwarecan be updated usingan external USB storagemedium13. Music, video and imagefiles, as well as existingrecordings can be playedback hassle-free14. M2TS video in 1080p15. DivX Video in Full HD1080pkeys of the remote controlcome into play, whose con-text-related roles are al-ways explained via the on-screen user interface.We should mention atthis point that the over-all responsiveness of themenus and quick executionof commands sent from theremote control were noth-ing short of impressive inour test. Hardly ever did wenotice any significant lag,which adds a lot of extrafun to working with this re-ceiver.Even though the channeloffering via DTMB will nev-er reach the diversity anddepth of satellite reception,it is nonetheless possible tohave the channel list sortedaccording to name, serviceID or LCN, if required –apart from manual arrange-ment, that is.The Picture menu itemobviously deals with howthe video signal will be pro-vided to the TV panel. As faras resolution is concerned,the following options areavailable: 576i, 576p, 720p,1080i and 1080p, with ei-ther 16:9 wide screen, pil-lar box, pan & scan or 4:3.If you opt for Automatic thereceiver will negotiate thebest possible format withthe TV panel.Both the PAL and NTSCcolour standards are sup-ported and with the remotecontrol it is possible to ad-just resolution and aspectratio on the fly.Apart from the automaticchannel search (which can-not only be launched in thestart menu but also withthe Channel Search menuitem), it is also possible toinitiate a manual search byentering a specific frequen-cy and its bandwidth.When we tried that withan active frequency the GT-278 flawlessly detected allDTMB channels. Here again,the current location (Main-land China or Hong Kong)can be determined.In case you’re wondering:DTMB signals are the samein China and Hong Kong,the only reason the receiver
678910111213141519www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志
161718192020 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comasks you to specify is thatit can automatically deter-mine the correct local timefrom the time code that istransmitted via DTMB. Un-fortunately, we found noway to set the time manu-ally. It is, however, possibleto change the time differ-ence.The receiver also comeswith a sleep timer as wellas a no-signal timer, bothof which will surely be ap-preciated by users like theauthor of this report, whoenjoy dozing off in front ofthe telly after a long day’swork.The Option menu looksafter audiophiles who havehooked up the GT-278 to aDolby Digital home theatresystem: They will appreci-ate the PCM and Raw HDMIon/off options. In addition,this is where OSD language,audio language and subtitlelanguage can be selected.Tsinghwa has a reputationfor constantly improving itsproducts, which is why afirmware update option washigh up on the specificationsheet.We found that this featurehas been integrated neatlyand any USB storage me-dium will do to keep the re-ceiver software up to date.Make no mistake aboutit: This receiver performedbrilliantly during the entiretest, and we could not flawit at all. Yet, it comes with afactory reset function.After all, something maygo wrong at some stage orperhaps you would like toclear the channel list andget off to a new start withreceiver, so it’s always a re-lief to know there is a wayout.The main menu is com-pleted with the Multimediaentry, which we will look atin more detail in a moment.Once all user settings16. Image viewer17. Configuration of thestorage medium18-19. Channel list (Shenz-hen and Hong Kong)20. One touch of a buttonis all it takes for time-shiftviewingare completed and the GT-278 is tailored to your veryneeds it is safe to exit themain menu and wait forthe new Tsinghwa receiverto show the first availablechannel.Every time it switches toa new channel an info baron the bottom of the screenshows date and time, chan-nel number and EPG infor-mation on the current andnext event.The video and audio qual-ity we experienced in ourtest won us over. What weliked even more was thatnew channels appeared onscreen less than one sec-ond after they had beenselected. Quick as a flash,perfect for extreme zap-ping!Thanks to the DTMBstandard the receiver canprocess SD and HD signalsalike. Last but by no meansleast we should offer ourpraise to the low-thresholdtuner that is built into thisreceiver.Using the OK button it ispossible to call up a veryclearly structured channellist on the TV panel. In ad-dition, a dedicated buttonis available on the remotecontrol to access the fa-vourites lists.The electronic programguide is launched with theEPG button and providescontent information, if thechannel provider transmitsthese data. By default, in-formation is shown for onechannel at a time, whichcan be changed in the up-per left corner of the OSD.Right below you will find alisting of upcoming events,with extended content in-formation in the right area.Using the colour-codedfunction keys users canscroll up and down the con-tent list, which provides in-formation for up to sevendays in advance.As mentioned above, theGT-278 is designed as afully-fledged PVR receiver,which is why events can bemarked for recording rightin EPG view. If required,timer entries can be set for
6222324252122 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comrecordings. Alternatively,you may format the entirestorage medium to free up100% capacity again.Right at the start we haddetected the DivX logo onthe packaging of the GT-278, so we could hardly waitto check out this receiver’smultimedia features.And we were impressed bywhat we discovered: Tsing-hwa has decided to split upthe Multimedia menu intothe Audio, Images and PVRsub-areas, and when weselected Video the receiverright away showed all videofiles that were saved ontoour storage medium.No matter whether it wasAVCHD, AVI, DivX, FLV,MOV, MP4, MPEG or TS,the GT-278 was happy withany format and flawlesslyplayed back video in SD andHD up to 1080p.What’s more, every timea video is selected fromthe list, the receiver firstpresents a thumbnail withtechnical details (such asresolution, duration, filesize, etc.) just below. An-other touch of a button onthe remote is all it takes fordaily or weekly recording.As soon as a compatibleUSB 2.0 storage medium(USB memory stick or ex-ternal USB hard disk, forexample) is attached tothe receiver the time-shiftviewing function becomesavailable. Use it to pauseany live transmission andcontinue from that veryscene at a later time.Unfortunately, the GT-278is only capable of recordingone event at a time. It is,however, possible, to watchanother channel on thesame frequency while a re-cording is taking place.Sooner or later the stor-age medium might becomefilled to the brim, and whenthat day arrives you caneasily call up the main menuin order to delete individual21. If one recording is activeand you want to start a secondone, you need to stop the firstrecording first22. Listing of all availablerecordings23. The receiver memorises theexact playback position andcontinues from that positionthe next time this recording isselected24. EPG presentation25. Info bar
DATATECHNICALManufacturer TsinghwaModel GT-278Function PVR Receiver with various Multimedia FeaturesInput frequency 474 - 858 MHzEPG yesSupported standards Video resolution 576i, 576p, 720p, 1080i, 1080pRS232 noEthernet noUSB 2.0 yesHDMI yesYUV yesStereo Audio / CVBS yesHDTV yesMPEG4/H.264 yesSupportes languages/regions English, traditional & simplified ChineseDIAGRAMENERGYActive PowerApparent PowerMode Apparent Active FactorActive 13 W 7 W 0.53Standby 4.5 W 1 W 0.22+– Luo JunTELE-satelliteTest CenterShenzhen专家意见23www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志highly responsive OSDperfectly implemented multimedia featurestuner with very low thresholdclock cannot be set manuallyMHEG (Hong Kong) cannot be processedActive use with recording, playback, zapping, etc. during the first15 minutes, followed by 15 minutes of standby.full-screen playback to be-gin.We can think of only veryfew tested receivers thattreated and processed ex-ternal video files with simi-lar ease. Hats off to Tsing-hwa for a job well done!After such a brilliant showin the video segment wedid not expect anythingless for audio, and rightlyso – AAC, M4A, MP3 andWMA files can be listenedto with great comfort, andthanks to the integratedimage viewer you can evenpresent your latest holidayphoto to friends and familyon your flat-screen TV.The manufacturer hastreated the remote controlto a dedicated key for ac-cessing the archive with allexisting recordings. Thesecan also be deleted or re-named if required.We also noticed in ourtest that the receiver re-members where playbackwas stopped for every re-cording and when you callup that recording again youcontinue from that preciseposition. While this maysound like a minor featurewe strongly believe it’s amajor plus.As far as DTMB receiversare concerned, the Tsingh-wa GT-278 is a safe bet andwill make a great additionto your multimedia rack.Rarely have we come acrossa receiver with a similarlyresponsive OSD interfaceand which not only sportsrock solid software but alsotop-notch multimedia fea-tures.
24 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comTEST REPORT该独家报道由技术专家所作DVB-S2 Signal Meter
25www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志HorizonNano-S2• Doesn’t require its own power supply• Extremely easy to use• Displays signal level and quality• Optimized for the measurement of foursatellite positions• Very fast reaction time
03-04/2013www.TELE-audiovision.com/13/03/horizon26 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comSmall and Very PracticalTEST REPORT DVB-S2 Signal AnalyzerThe Horizon Nano-S2 is avery special device! It’s asignal analyzer that a) trulyfocuses on the essentialsand b) is incredibly easy touse. We introduced the pre-vious model, the NanoSatfor DVB-S measurements, inTELE-satellite 12-01/2010.The Nano-S2 is designed forDVB-S2.Because of the lack of apower supply (there’s norechargeable battery andno power cord), it weighs amere 250 grams (just over½ pound). The Nano-S2feels small and comes withan LCD display that is mere-ly 5.5 x 3 cm (128 x 64 pix-els) in size. The display caneasily be seen even in directsunlight and it also comeswith background illumina-tion.There’s only one buttonon the top side along witha USB port and two “F”jacks to connect the Nano-S2 to the reception system.Naturally, we here in thetest center wondered if itwould have made sense toinclude more buttons andadditional connections. Theobvious answer to this ques-tion turned out to be ‘no’.The Nano-S2 along with itslogical operational struc-ture and its powerful tuneris perfectly equipped forthe speedy installation of asatellite system. It actuallyis easier to use for daily an-tenna installations!The question remainsthen, how does the Nano-S2 get its power when thereare no power connections atall? Horizon answered thisquestion very ingeniously inthat the analyzer very sim-ply draws on the satellitereceiver or the active mul-tiswitch.What might sound com-plicated at first is in realityquite simple: a satellite sys-tem is always put togetherin such a way that a coaxialcable runs from the receiveror a multiswitch to the LNB.This cable carries the se-lected polarization voltage(13V or 18V) to the LNB.This cable is therefore con-nected to the right-side “F”connector of the Nano-S2thereby receiving the re-quired voltage. The second“F” jack is connected to theLNB using the included coaxcable. This guarantees thaton the one hand the analyz-er can directly process theLNB signals and on the otherhand the analyzer gets thepower it needs.Also included in the pack-age by Horizon is a protec-tive cover as well as a USBcable to program the ana-lyzer’s internal memory. Acarrying strap to make iteasier to work with the Na-no-S2 rounds out the includ-ed accessories. For those in-stances when a receiver orHORIZON Nano-S2Very easy to use signal analyzer for quickinstallation of satellite antennas for HDTVreception.
82514376910 1128 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.com1. The Horizon Nano-S2 in programming mode2. The selected satellite is shown in the upper left, underneath isthe RF level. The antenna is moved until the analyzer recognizesthe satellite3. Once the desired satellite has been found, the MER for fine-tuning appears alongside the RF level4. In just a short time we located HISPASAT 30.0° West from ourlocation with our 90 cm antenna5. THOR-5 0.8° West6. EUTELSAT-16A 16° East7. HOTBIRD 13° East8. EUTELSAT-9A 9° East9. The Nano-S2 is recognized by Windows as a serial port in DeviceManager10. With the help of a small tool new firmware and satellite lists canbe uploaded to the Nano-S211. The download only takes a few secondsmultiswitch is not availableto supply power and the an-alyzer still needs to be used,Horizon also provides a bat-tery case that can hold a to-tal of 10 AA 1.5V batteriesthat could then be connect-ed to the input “F” connec-tor to supply the necessarypower to the analyzer.As soon as the cablingis correctly taken care of,simply pushing and holdingdown the large button onthe top side of the Nano-S2is all that’s needed to turnit on. Next the same buttonis pressed again, only thistime it’s pressed momen-tarily to select the desiredsatellite from the prepro-grammed list. These listsconsist of up to four satel-lite entries and are availablefor download from Horizon’swebsite (www.horizonhge.com) for different regionsof the world. We’ll explainhow this works shortly, butfor now it’s time to test itsreception capabilities.The preprogrammed sat-ellite list in our test Nano-S2encompassed two positionsfor ASTRA 28.2° east (forASTRA 1N and for ASTRA2B), HOTBIRD 13° east aswell as ASTRA 1 19.2° east.We connected the nano-S2to our antenna on the roofand loosened the mountingscrews.Once the desired satellitewas selected on the ana-lyzer’s display, in our caseit was HOTBIRD at 13° east,we started aligning the an-tenna. First the antennawas pointed exactly south;for our location that roughlyrepresents the 16° east po-sition. To find your local co-ordinates you can either usea device with a GPS receiver(SmartPhone, etc.) or youcan have a look at the nu-merous lists available on theInternet and search for your
■29www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志TELE-satellite editorThomas Haring aligning a 90cm antenna with the HorizonNano-S2
12345630 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comcoordinates there. We rec-ommend www.dishpointer.comA look at the Nano-S2 re-veals an RF value display(signal level) in dBµV. Nowadjust the elevation of theantenna, that is, adjust theantenna up or down, un-til the highest signal levelis reached on the display.Next adjust the antenna inthe azimuth direction, leftor right, until the desiredsatellite has been found.Keep in mind though, thatif the desired satellite is lo-cated a fair distance awayfrom the southern point (inthe southern hemisphereit would be the northernpoint), the eleva-tion of the anten-na would need tobe readjusted.You’ll see howmuch better theRF signal level willthen be.Once the Nano-S2 hasidentified the desiredsatellite, the message‘Found’ appearsin the display, anacoustical tone ac-tivates and a sec-ond bar graph forthe MER (in dB) appears. Toput it in simpler terms, theRF bar graph represents thesignal level while the MER(Modulation Error Rate) rep-resents the signal quality.Now simply finely adjustthe antenna position in allfour directions until the RFlevel and MER are at theirmaximum levels. Slowlytighten the mounting screwson the antenna. Lastly, it’srecommended to adjust theskew angle (the rotationof the LNB). For each posi-tion that is to be received,the LNB should be rotatedclockwise or counterclock-wise. The Nano-S2 can onceagain be helpful here: theLNB is rotated until the RFlevel and MER are at newmaximums.In just a very short timewe managed to perfectlyalign our 90 cm antennafirst to HOTBIRD 13° east,then to TURKSAT 42° east,HISPASAT 30° west, THOR 50.8° west, EUTELSAT-5A 5°west, EUTELSAT-8A 8° westas well as EUTELSAT-12A12.5° west. Additional con-trol measurements using aprofessional signal analyzerconfirmed the outstand-1. EUTELSAT 5A 5° West2. Comparison measurement ofEUTELSAT-5A 5° West3. EUTELSAT-8A 8° West (DVB-S2)4. Comparison measurement ofEUTELSAT-8A 8° West (DVB-S2)5. TURKSAT 42° East6. Comparison measurementof TURKSAT 42° East
DATATECHNICALManufacturer Horizon Global Electronics Ltd, First Floor Office Allen House, Edinburgh Way, Harlow, Essex CM20 2HJ, United KingdomTel. +44-1279-417005Email email@example.comModel Nano-S2Function Digital Satellite Meter for and SignalsInput frequency 950 - 2150 MHzDVB-S2 compatible yes Modulations QPSK, QPSK, 8PSKDisplay 128 x 64 PixelRF-Input 2x F-TypeUSB Port yesPower supply via Receiver or 10 x 1.5V AA Batteries+–www.TELE-audiovision.com/13/01/horizon.pdfMore about this companyThomas HaringTELE-satelliteTest CenterAustriaHORIZON Nano-S2 Satellite PacksASTRA Package East Package West Package UK Package Motorized PackageASTRA 2 (B) 28.2° East EUTELSAT 16A 16° East THOR-5 0.8° West ASTRA 2B 28.2° East TURKSAT 42° EastASTRA 3 23.5° East HOTBIRD 13° East EUTELSAT-5A 5° West ASTRA 1N 28.2° East ASTRA 19.2° EastASTRA 1 19.2° East EUTELSAT 9A 9° East EUTELSAT-8A 8° West ASTRA 1 19.2° East THOR-5 0.8° WestASTRA 4 4.8° East EUTELSAT 7A 7° East EUTELSAT-12A 12° West HOTBIRD 13° East HISPASAT 30° West32 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.coming capabilities of the littleNano-S2. We also liked thatthe measured MER and RFvalues were similar to thoseobtained with the profes-sional analyzer. This speaksvolumes for the quality ofHorizon’s built-in tuner.As the Nano-S2 namesuggests, Horizon’s newsignal analyzer can receivenot only DVB-S signals, butDVB-S2 signals as well. Thiswas confirmed on EUTEL-SAT-8A 8° west where thefrequency 11131H in DVB-S2 8PSK was correctly pro-cessed. Even DVB-S2 QPSKsignals (for example, onHOTBIRD 13° east) wereprocessed effortlessly.One of the most impor-tant criteria for any signalanalyzer would be its reac-tion time, that is, the timeit needs to read and processa transponder. This wouldactually determine whetheror not an analyzer is com-patible for everyday use. Ifit would take, for example,five seconds to read andprocess a satellite position,you would have in all likeli-hood already moved the an-tenna to a new position andpassed the desired satellite.But, don’t worry; the Nano-S2 is light years ahead offive seconds; in our testsonly about one second wasneeded to identify a satel-lite. And it didn’t matterif the antenna was movedquickly from east to westand only had access to thesignal for a very short time.You’re probably grumblingto yourself right now: howwas it possible to measureso many satellites when thepreprogrammed list onlyhas four entries? Very sim-ple; Horizon currently hasfive satellite packages avail-able for download with themost popular satellites in aregion. Not only that, Hori-zon’s worldwide distributionpartners will undoubtedlyexpand on these lists andadapt them to their regionsso that every user will beable to find the entries thatthey need.How do you get these sat-ellite lists into the Nano-S2?In order to add new lists orupdate the firmware in theanalyzer, it must be con-nected to a PC using theincluded USB cable. Ourtest PC with Windows 7 au-tomatically recognized thedrivers that were neededand downloaded them fromthe Internet. If necessary,the matching drivers for allWindows versions startingwith XP can also be down-loaded directly from Hori-zon’s home page.Regardless if it’s a firm-ware update or a new satel-lite list, Horizon makes everyupdate available in the formof an .exe file so that theuser does not need to firstload any download tools andthen open up Firmware orSettings files. Simply startthe .exe file and then clickon the ‘Transfer’ button. Theprogram will then create aconnection to the Nano-S2and transfer the desiredcontent. This all functionedperfectly in our tests but wereally didn’t expect anythingless from Horizon.All in all, the Horizon Na-no-S2 is an excellent alter-Extremely light and easy to use. Very precisemeasurements and quick tuner reactions tosignal changes. Designed for DVB-S2 use.Can be used immediately thanks to the prepro-grammed satellite lists.NoneExpert Opinionnative to align antennas atlittle cost. The Nano-S2 fo-cuses on the absolute ne-cessities resulting in intui-tive and simple operation.The user manual is well-written and is a good sourceof information even forhalf-way experienced us-ers but is hardly necessary.Even the Nano-S2’s techni-cal specifications made theadrenaline flow as did itsDVB-S2 reception. The ex-cellent tuner and the speedysignal recognition topped itall off.
34 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comTEST REPORT该独家报道由技术专家所作Twin Tuner Multimedia PC Satellite Card
35www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志• Perfect Integration in a PC andperfect functioning with all well-known TV applications• Independent operation of thetwo built-in tuners• Professional Blindscan possibletogether with CrazyScan• Can also control motors,polarizers and multiswitches• Features an integrated CImodule for use with CAMsTBS 6991
03-04/2013www.TELE-audiovision.com/13/03/tenow36 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comThe Ideal Satellite Cardfor Multimedia and DXTEST REPORT Twin Tuner Multimedia PC Satellite CardAs is standard, the TBS6991 is shipped in a blackpackage that also includesa remote control, an IR re-ceiver, a power adapter cableand a mini CD. Installing thecard presents no problems; itcan be inserted in any avail-able PCI-e slot, regardless ifit’s PCI-e x1, x4, x8 or x16.As expected from TBS, thecard was perfectly fabricated.In just seconds we were ableTBS 6991Perfect TV card for watching TV;ideal for DXers and satellite professionalsguarantee that enough poweris be available for more com-plex satellite systems suchas with a rotor, polarizer,multiswitch, etc. Since threeMolex connectors from thepower supply are necessary,we had to figure out where toget them from; our test com-puter only had one free Molexconnector. For our tests weunplugged two Molex con-nectors from the hard drives.Everything was working mag-nificently but it didn’t takelong for the missing harddrives to become noticeable;some files that were neededwere on these hard drives.Therefore we decided to op-erate the TBS 6991 withoutThe Ideal Satellite Cardfor Multimedia and DX:Nothing Left Out with itsTwin Tuners and Two CISlotsIf the term TBS doesn’tmean anything to you, youmissed the last issue of TELE-audiovision. The develop-ments at TBS (also know asTenow) are running at a highpace; there are always newTV cards being introducedthat cover every possiblemarket niche. In the last is-sue we introduced two DVB-Creceivers, the TBS 6618 forPCI-e and the TBS 5860 asan external USB box. In the10-11/2011 issue we testedright away four TBS TV cardsincluding the TBS 6984 withan incredible four tuners!The new TBS 6991 comeswith two tuners as did theTBS 6981 (tested in the 12-01/2011 issue) but this timethe card also comes with twoCI slots. Especially interest-ing is the chip in use: theTMAX TAS2100. Obviouslythere are two of them sincethis is a twin tuner card. Eventhough the card only take upone PCI-e slot, it will oper-ate like two separate DVB-S/S2 cards in the system. Whatmakes this chip so special?It’s very simple: it makesreal Blindscans possible andis supported 100% by theCrazyScan software. More onthat later.to screw the cabinet shut.The power adapter cable in-cluded as part of the acces-sories is connected to threeof the Molex connectors onthe power supply. This shouldthe additional power sourcesand everything worked finewith the exception of mo-tor control. In a further test
38 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comThe TBS 6991 with CrazyScanwe connected only one ofthe Molex connectors to theadapter cable and discoveredthat we could now operate ourmotorized antenna withoutany problems. This antennaactually consisted of two mo-tors, a DiSEqC switch and aTwin LNB. Clearly more poweris needed for this set up thanwith a simple antenna.Under Windows the TBSmatic configuration, insteadit simply loads the desiredchannel list from the Inter-net. In this way you don’thave to wait and you can onlyhope that Microsoft managesto keep the channel lists of allthe different satellites up todate. But you can also per-form a channel scan. Here6991 is linked without anyproblems to the system BDAdrivers and Device Manageridentifies this correctly as“TBS6991 Dual DVBS/S2 BDATuners & CI”. Setup and in-stallation is therefore com-pleted in just five minutes – itshould always be like this!Thanks to the BDA drivers,the card can be used instant-ly with nearly all TV applica-tions, such as, DVB Dream,TBS Viewer, ProgDVB or Win-dows Media Center. Duringtesting of the DVB-C cardswe ran into some problemswith the scan (see the test re-port in the 01-02/2013 issue)although we didn’t have thisproblem with DVB-S/S2.First we tried Windows Me-dia Center (WMC) with thenewly installed TBS 6991. Thistime the channel list could im-mediately be displayed and itonce again became clear whythere were so many problemswith DVB-C cards: WMC doesnot perform a scan with auto-you can choose between anautomatic scan of all tran-sponders (the transponderlist is not available to theuser) or a scan of a manuallyentered transponder. Onceagain WMC attempts to makeit as easy as possible in thatyou only need to enter in thefrequency and symbolrate of
39www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志figured settings for the vari-ous TV applications so thatnearly all common programsare perfectly harmonizedwith the remote control with-out the need to do anythingelse. We liked this conceptsince we’ve already often ex-perienced problems with thecommon LIRC.There are two TV applica-tions on the mini CD that areavailable for installation: TBSViewer and DVB Dream. TheTBS Viewer is actually an OEMversion of the DVB Viewer. Itsfunctional capability is some-what limited compared to theInstead we tested the TBS6991 with ProgDVB and withthe full version of DVBViewer.The TBS 6991 worked verynicely with all of the testedTV applications and evenfunctions such as DiSEqC 1.2,which can bring some othercards to its knees, did notproduce any problems.If you’re in the market for aTwin Tuner satellite card for aPC, the TBS 6991 would be agood choice. It is compatiblewith all of the more commonsoftware programs, has anexcellent remote control andwith the two CI slots you canThe TBS 6991 with TBS Viewertions for communicating withthe CAMs and the insertedSmartcards, this task is han-dled by the TBS MCE CI Toolthat runs in its own window.All of our CAMs were correct-ly recognized although, asexpected, the HD+ CAM didnot do its job since we’re notdealing here with a certifiedCI receiver.WMC can be described injust a few words: it works andit’s intuitive. All functions aresupported and especially theEPG, Timeshift and Record-ing functions are nicely im-plemented. This is obviouslynot the design of a single pro-grammer, rather it’s the workof an entire design team.As we have come to ex-pect from TBS, the includedremote control is integratedwith its own software thattranslates the remote intokeyboard buttons. The TB-SVHID tool contains precon-full version of the DVB View-er and comes with a slightlyaltered user interface thatcarries the TBS logo. Never-theless, this software is verygood for watching TV.DVB Dream is installed asa Demo version. Comparedto the full version, quite a fewfunctions are missing in theDemo version so we decidednot to look at it any further.watch PayTV channels eventhrough the Windows MediaCenter as long as you use anappropriate CAM and Smart-card. We were even able tooperate two different TV ap-plications at the same timeby simply configuring the twotuners properly.For us though, using thiscard to merely watch TVwould have been shame-a transponder.A special application isavailable on the included miniCD that will allow the CAMsand associated Smartcardsinserted in the CI slots to alsobe used under WMC. Sincethe WMC has no special func-
40 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comful. DXers, feedhunters andtechies would definitely gettheir money’s worth with theTBS 6991. Both of the tunersare actually blindscan-com-patible tuners. They can iden-tify if there’s a signal on thecurrent frequency and, if so,it will automatically recognizereception parameters such asmodulation, symbolrate andFEC.A blindscan is especially in-teresting with satellites thatare used for feeds, that is,live transmissions from mo-bile broadcasting units. Justlike “train spotting”, it can bequite a lot of fun receiving rawvideo material. Sometimes itcould even be unedited livetransmissions like sportingor music events and then itcould also be a news reporterpassing the time while wait-ing for his live news broad-casting segment. Once in awhile you’ll even catch someentertaining bloopers. Sincethese feeds are not normallytransmitted on a regular ba-sis and typically always usea different frequency eachtime, a blindscan and a spec-trum analysis are worth theirweight in gold. Unfortunately,measurement equipment likethis can be prohibitive for anormal hobbyist and that’swhy we’re so excited aboutthe TBS 6991. Several ap-plications make possible nearprofessional quality analysisof the frequency band for sat-ellite TV.TBS has provided a pro-gram on the mini CD thatperforms a blindscan thatwill find every transponderand channel on its own in ashort amount of time with-out the use of any predefinedtransponder list. After we in-stalled this tool from the miniCD, we wanted to try it our,but the TBS blindscan an-nounced rather sternly thatthe available tuner is not sup-ported. After fussing arounda little bit, we found a newerversion for the TBS 6991 onthe TBS website. After unin-stalling the previous versionand then installing the newversion, we were able to startthe program without any er-ror message. Unfortunately,the scan was unable to findany channels at all and wecouldn’t figure out why. It’spossible that TBS has to fixsomething in their software,but this didn’t bother us atall; it was obvious by lookingat TBS’s download site thatthey are constantly at workupgrading their drivers andtools.With this software wereached an absolute DXerhigh point in terms of PCbased satellite technology.CrazyScan implements thefollowing functions:• RFScan: Corresponds to aspectrum analyzer• BLScan: Implements ablindscan• IQScan: Shows the con-stellation of the current tran-sponder including automaticidentification of receptionparameters and streams thetransport stream to TSRead-er (see below)• Signalinfo: Displays infor-mation on the received signalWhat’s so special nowabout the TBS 6991 with re-spect to CrazyScan? Verysimple: while most of the TVapplications access the cardthrough BDA drivers, Crazy-Scan speaks directly to thecard so that full potential ofthe tuner can be used. Butto do this the tuner has to beable to implement the neces-sary functions and, beyondthat, CrazyScan has to sup-port the current tuner. Andit just so happens that theTBS 6991 tuner supports allof the four functions men-tioned above and is also rec-ognized by CrazyScan. Thereare relatively very few cardsthat are fully supported byCrazyScan and oddly enoughmost of those cards are TBSmodels…CrazyScan is available forThe TBS 6991 with ProgDVB
The TBS 6991 with DVB Viewer42 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comkept quite simple and on themain screen there are onlysix groups that need to beconfigured.• Earth Position: Not nec-essary, but nice for the report- it’s the exact geographicalposition of the reception an-tenna.• Satellite Info: In order tobetter compare the reportsat a later time, the currentsatellite information shouldbe entered.• Style: Here the graphicsdisplay can be set up the wayyou like. The thickness of thelines, the type of curves andthe colors can all be chosen.There are also two buttonsthat determine which of thetwo polarizations are dis-played (H/L, V/R or both).• Device: Here the TBS6991 card with the desiredtuner is selected. Addition-ally, the DiSEqC parameterscan be entered here wherebyCrazyScan makes possiblea cascaded DiSEqC 1.0 andDiSEqC 1.2 sequence. This isideal for more complex sys-tems with multiple motorizedantennas connected throughDiSEqC 1.0 switches.• LNB: The frequencies ofthe local oscillators are sethere. A drop-down menulets you choose the desiredvalues from predefined LNBtypes.• Interval: Here in thisgroup the user can enter inthe start and end frequen-cies of a scan as well as thefrequency step and the po-larization (H/L, V/R or both).The Loop option activates acontinuous scan and can beinteresting when, for exam-ple, the antenna needs to finetuned. A small span would beused that in essence is updat-ed in real time – almost like areal spectrum analyzer.Once all of the parametershave been configured, youcan press the Scan button. Injust a few seconds an exten-sively detailed spectrum isdisplayed. Even the spectrumof both polarizations is showndepending on the configura-tion. For us the construc-tion took about 15 secondsper polarization with fre-quency steps of 5 MHz. Thisresulted in a truly detailedspectrum. If the frequencysteps are increased to 10MHz, the construction of thespectrum needs only abouthalf the time but in exchangethe spectrum doesn’t look asnice. At frequency steps of 1MHz you have to wait a lit-tle bit but in return you’ll getan unbelievably high resolu-tion spectrum display. Aftera number of tests we’ve de-termined that 5 MHz steps isthe optimal value in terms ofdetail and speed.Thanks to the total supportof the TBS 6991, the Blind-scan function can now bestarted. When the appropri-ate button is pushed, Crazy-download in ZIP format andin order for the software towork a number of additionalfiles need to be copied intothe same folder. This includesa StreamReaderEX BDA DLL,the necessary QT/QWT DLLsand eventually the MicrosoftVisual C++ 2008 SP1 mustalso be installed. These filescan be downloaded from theCrazyScan Wiki at http://sourceforge.net/p/crazyscan/wiki/Home/Now CrazyScan can bestarted. First, though, severalparameters have to be con-figured. The user interface is
44 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comScan checks out in the spec-trum all of the transpondersthat were found and displaysthe individual reception pa-rameters in the graphic. Thathappens very quickly – fasterthan any other signal ana-lyzer that we know of. Evenmore impressive is the speedwhen the “Blindscan2” optionis activated. In this case theCrazyScan Blindscan algo-rithm is not used; instead it’sthe hardware implementedBlindscan in the tuner. Andit’s here where the TBS 6991shines with its high speed. Allthe reception parameters ofthe current satellite are listedin record time.The displayed graphic canbe exported in PNG pictureformat, PDF document formator SVG browser format. Un-fortunately, the transponderlist cannot be exported inINI format for normal TV ap-plications. Sooner or laterthe author of CrazyScan willundoubtedly implement thisbut it’s really not all thatimportant since CrazyScanstill has a lot more to offer.If you double-click with themouse on a transponder, anew window opens in whichthe corresponding frequencyis already preset. The coloredkey with the alien face acti-vates the constellation dia-gram. This has it all; it willreset the reception param-eters through the Blindscanfunction and then in just afew seconds the constella-tion diagram will appear. Theuser does not need to set themodulation, symbolrate, FEC,etc. Excellent!If the production of theconstellation diagram isstopped, the currently ac-tive transponder can thenbe streamed such that itcan be further processed byTSReader. The result is un-believable: now we can me-ticulously analyze the streamthat was just determinedand even display the desiredchannel using VLC. This is sopowerful that we simply haveto describe the process againso that we can believe it our-selves:1) You align the antenna toa desired satellite. Using theLoop function and a smallspan you can optimally alignthe antenna with CrazyScanand the use of the spectrum.On the other hand, a com-plex system can be controlledthanks to cascading DiSEqCcommands.2) Next initiate the scanfunction across the entire fre-quency range.3) Continue with the Blinds-can function. If, for example,you find a new transponderthat you would not normallyfind on this satellite, you needonly double-click on it to seethe constellation diagramwith all of its reception pa-rameters.4) Lastly the transponder isstreamed directly to TSRead-er where you can then see amultitude of information re-garding the PIDs in the tran-sponder.5) From TSReader you canfurther stream the desiredchannel to VLC so that it canbe displayed.It is our opinion that evenprofessionals will appreciatethis solution; we as DXersare very impressed and cannow understand how someother DXers manage to findnew feeds (and before us noless!). But we didn’t even tellyou the best part yet! Crazy-Scan is free!TSReader has been aroundfor some time now and itsprogrammer Rod Hewitt wasintroduced in the TELE-sat-ellite 06-07-08/2012 issue.This program is a transportstream analyzer. The vari-ous sources for the transportstream can be incorporatedincluding BDA-compatible TVcards as is the case with allTBS cards.In our last test of TBS DVB-C cards (TBS 5680 and TBS6618) we thoroughly checkedThe TBS with TBSVHID
+–Vitor Martins AugustoTELE-audiovisionTest CenterPortugalwww.TELE-audiovision.com/11/03/tenowMore about this company46 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comout CI, for PCI-e or USB. Andlet’s not forget the excep-tional quality and attentionto detail that highlight all ofTBS’s cards.If you want to comfortablywatch TV on your PC, wheth-er its through a TV applica-tion or with a multimedia PCthat, for example, works withthe Windows Media Center,the TBS 6991 gives you aneasy to install TV card thatleaves nothing to be desiredand works in harmony withnearly every TV application.And yet the TBS 6991 isalso interesting for DXersand professionals. The com-plete support of CrazyScan,TSReader and TransEdit to-gether with its twin tunersand CI slots provide for awide range of possibilities.Even some higher-end signalanalyzers can’t keep up withall of these functions, espe-cially when it comes to trans-port stream analysis.We’re not only thrilled withthe TBS 6991; we’re actuallyputting more of them in ourtest PCs!out TSReader and used it tosee whether or not our cableprovider incorporated validNIT tables in the stream –a network scan from DVBDream could not find any ad-ditional transponders. Thanksto TSReader we were able todetermine that it was not withthe provider.If it’s finding errors in thestream or to just simply seeall the details, TSReader isthe tool for advanced ama-teurs and professionals. Be-cause of this it was importantfor us to see how far the har-monization between the TBS6991 and TSReader went.This test was much too fastin that you only had to se-lect “DVB-S BDA compatiblesource” as the source.In the next step the re-ception parameters areselected like normal afterwhich TSReader begins ana-lyzing the numerous PIDswithin the stream. InsertedCAMs, as was already thecase with Windows MediaCenter, are controlled by theTBS-MCECITool that mustbe started on demand. Thisinterrupts the stream whichthen has to be newly restart-ed from within TSReader. Arestart of TSReader is notnecessary.Thanks to the twin tuners,two different TV applicationscan be started at the sametime with the requirementthat they both use differenttuners. Even though the TBS6991 occupies only one PCI-e slot, it can be operated asif there were two separatecards.We could therefore, for ex-ample, use TSReader withtuner A while CrazyScan wasperforming a scan on tuner B.We should not forget to men-tion that ending one of theapplications will interrupt thestream on the other applica-tion. In this case the streamwould have to be restarted.If you have the full versionof DVB Viewer, it will includea tool called TransEdit. Thisprogram primarily serves tocreate channel lists throughscanning that is based eitheron transponder lists or themanual entry of transponderdata. Alternatively, a Blind-scan can also be performedbut it does not utilize the pos-sibilities that the TBS 6991tuner offers. For this reasona Blindscan like this is sig-nificantly slower comparedto CrazyScan. TransEdit cando something else; it canperform a transport streamanalysis in which it lists allthe PIDs. Additionally, com-plete transponders or onlythose selected PIDs can bestreamed to a hard drive.The scan is very comfortable;you need only click on a tran-The TBS 6991 with TSReaderFull featured DVB-S/S2 card with PCI-eTwin Tuner2x CI for PayTVFully supported by Windows Media CenterFully supported by CrazyScan, TSReader andTransEditIdeal for satellite TV viewingIdeal for DX and professional applicationsNoneExpert Opinionsponder to list all the availa-ble channels from a scan. Anadditional double-click on oneof the listed channels opens anew window with the live TVpicture.TBS (Tenow), with its TBS6991, has once again shownhow perfectly designed a PCcard can be. The TBS prod-uct palette includes cards inevery conceivable version,whether it’s DVB-S/S2, DVB-C or DVB-T/T2, with or with-
12348 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.commally isn’t there. And, howabout that, something seemsto be happening on 11.156GHz H!With a double-click on thistransponder we open Crazy-Scan’s “Carrier Search andMonitoring” window and startthe constellation diagram(the button with the alien’sface). The QPSK constella-tion shows that the signal islocked in and that a usefulsignal quality exists. Next westop the constellation dia-gram and then press the DVBbutton to send the stream toTSReader. The first time youdo this you have to tell Cra-zyScan the path to TSRead-er, after that TSReader willopen automatically with thestream. It doesn’t get anySearchingfor a FeedWe would like to demon-strate how easy it is to find afeed using the TBS 6991. Forthis purpose we connectedour 100cm motorized anten-na to tuner B on the card. Inmemory location 4 in our con-figuration can be found Eutel-sat W1 (10.0E). This satelliteoften carries feeds making ita good starting point.We start CrazyScan andenter in the data from Eu-telsat 10.0E in the “SatelliteInfo” field. Only then will thedocumentation of our resultsbe complete. We also selecttuner B and set DiSEqC 1.2to position 4. A click of the“Set DiSEqC” button and theantenna turns to the satellite.Now we perform a scanof both polarizations (V/H).Transponders with feedscan generally be identifiedby their small size; typicallyonly one single audio/videostream is transmitted. Withsome experience you’ll get toknow the spectrum and you’llinstantly be able to recognizea transponder peak that nor-easier.And look at that: TSReaderhas identified an audio/videostream and instantly shows apreview image. Double-click-ing the preview image routesthe channel to VLC (VideoLAN Client) where it is thendisplayed: live soccer withoutany editing.The DXer now has a nicescreenshot with receptionparameters and the time.
6458749www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志He then posts the results inthe appropriate forums hop-ing that he was the first to dothis!And then after a few min-utes the feed is gone. Butlook at that, right after thata new feed appears, this timeon 11.93 GHz. A nice DVB-S2signal with unusual recep-tion parameters: SR 7119Ks/sec, FEC 2/3 with DVB-S2with 8PSK. The MPEG-4 videosignal in Planar 4:2:0 YUV iscoded in H.264 with 1920x1080 pixels.Welcome to the world ofthe feedhunter!and audio-PID’s to VLC, whichwill show the live video.6. After the end oft he firstfeed, a new feed is transmit-ted with slightly differentparameters. The sport eventgoes on, now with a differentmodality!7. By the way: the feed isbroadcasted in FTA DVB-S2,best resolution possible. Butthe best of it all: no broad-casting logos, textboxes,nothing! Just the plain video!8. Result of the full blindscan.All reception-parametersare written on the respectivetransponder.1. Finished scan using CrazyScan. Blue is horizontal,red is vertical polarisation – too much information, sowe turn off the vertical polarisation fort he next step.2. Just viewing the horizontal polarisation. Notice thesmall transponder close to 11.200 MHz: small but withperfect shape! Could that be a transponder carrying afeed? Let’s find out by double-clicking on its centre.3. CrazyScan will determine all tuning parameters auto-matically and show the constellation diagram. Indeed itlooks very promising, so let’s click the DVB-button tosend the streamt o TSReader.4. TSReader shows the content oft he Transport Stream(TS) and even shows a preview-picture of the videoPID’s.5. Double-Clicking on the image will stream the video-
50 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comOpticalSplitters ofGlobal InvacomTEST REPORT该独家报道由技术专家所作Fibre Optic Splitters
51www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志• splits optical signals nearly as good as theoretically possible• gives even better terrestrial signal levels than by usingstandard equipment• proofs that a optical system is nearly noiseless• splitting optic signal into 50+ outlets without noticeable loss
03-04/2013www.TELE-audiovision.com/13/03/globalinvacom■52 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comCan 3% Be As Good As 100%?TEST REPORT Fibre Optic DTTWhen you need to distrib-ute satellite and terrestrialsignals to a large number ofapartments, a fibre opticssystem comes first to mind.Even with very long opticalcables there is hardly any sig-nal quality loss. Also signalstrength suffers only insig-nificantly for practical cablelengths. But what is the im-pact of optical splitters? Youneed them to distribute theinput signal to many terminaldevices like TV-sets or satel-lite receivers. And every pas-sive splitter will attenuate thesignal. The larger the numberof its output the weaker thesignal you get. So you cannot split the signal without anend. Where is the limit?We had the opportunity tofind an answer to this ques-tion. We got two models ofmulti-output optical splittersmade by GlobalInvacom:GISplit16pro and GISplit-32pro. As you can easily de-duce, these are 16-way and32-way splitters respectively.Both are contained in thesame sized metal enclosuresbut while GISplit16pro hasone input and 16 outputs lo-cated on the same side panel,the other model has an addi-tional 16 outputs on the op-posite side. All connectors areof the FC-PC type.There are four holes in thecorners of the top and bot-tom panels. So how are yousupposed to install the de-vice on the wall? You do needto have long and rather thinscrews to pass them throughthe whole device before en-tering the wall, or else youneed to partly disassemblythe device. After unscrewingfour small screws on the sidepanels, the bottom panel canbe detached from the splitterenclosure. Then, you can at-tach the bottom panel to thewall with standard screws andreassemble the device.Ideally, the GISplit16prosplits the input to 16 equalGlobal InvacomGISplit16pro and GISplit32proLoss-less splitters for largeoptical distribution systemsTELE-audiovision testeditor Jacek Pawlowskitesting GlobalInvacom‘soptical splitters
GISplit16Pro Insertion LossOutput #dBGISplit32pro Insertion LossOutput #dB■■■■54 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comoutputs each carrying 6.25%of the input light. That’s be-cause 100% / 16 = 6.25%.Should we convert it to deci-bels, it would be -12 dB. Ofcourse, real performancemust be somewhat worsedue to unavoidable couplinglosses. And indeed, GlobalIn-vacom specify their GISplit-16pro as having a typical in-sertion loss of 13.3 dB.Similarly, the GISplit32proshould ideally split the inputto 3.125% and have -15 dB ofinsertion loss but GlobalInva-com specify the loss as 16.8dB typically. The manufactur-er’s specifications are explic-itly provided on the labels at-tached to the splitters as youcan see on the photographs.And that was the first per-formance parameter wewanted to measure in ourtest. For that, we used aGlobalInvacom Optical LNBand their FibreIRS ODU32optical transmitter as signalsource. Additionally, we fedthe ODU32 with a terrestrialsignal to create the most re-alistic test conditions. Weconnected the output of theODU32 with the input of thesplitters. Then we measuredthe optical power at the in-put and at every output ofthe splitter at 1490 nm wave-length.The first to go was GISplit-16pro. As you can see in thegraph 1., the maximum in-sertion loss was 13.8 dB andminimum only 13.15 dB. Theaverage loss (green line) was13.4 – so very close to thetypical value specified by themanufacturer.The next splitter – GISPlit-32pro was even better. Youcan see its results in thegraph 2. The average loss(blue line) was only 16.2 dBand all outputs had a lowerinsertion loss than the speci-fied typical value 16.8 dB!Output number 23 was thebest – only 15.99 dB. Impres-sive!The insertion loss for bothoptical splitters was reallyvery small – very close to thetheoretical limit. But to befully convinced that the opti-cal systems built with GISPlit-16pro and GISplit32pro arereally that perfect, we decid-ed to compare the results wegot with the results we couldachieve in a classical way - inpurely RF systems.For the satellite test, weused the same dish but thistime with a classical high per-formance LNB. Table 1 pre-sents the outcome.Channel Power[dB]MER[dB]Signal from a classical RF system 76.3 14.3GISplit16pro->GTU Quad output 63.5 12.6GISplit32pro->GTU Quad output 63.4 13.9Table 1. Optical systems incorporating the GI splitters undertest in comparison with top class RF satellite system withoutany splitters.Channel Power[dB]MER[dB]Signal from a terrestrial antenna 49.3 25.4GISplit16pro->GTU Quad output 61.2 28.0GISplit32pro->GTU Quad output 62.7 29.2Table 2. Optical systems incorporating the GI splitters undertest in comparison with a signal from a terrestrial antenna.We used transponder 10720V from HOTBIRD on 13° Eastas our test signal. Pleasenote that we measured theRF signal directly at the LNBoutput without any RF split-ters or multiswitches. Despitethe fact that the optical signalwas split to 16 or 32 outputs,the results were only slightlyinferior to the top class singleLNB system with a very shortcable!We did a similar test with aterrestrial antenna and thistime we were even more sur-prised. See our results in Ta-ble 2.The output signal in bothcases of optical setup wasbetter than a classical instal-lation! Not only was the sig-nal stronger but its MER wasalso better! And rememberthat we used only 3.125% ofthe light power entering theGraph 2.Graph 1.
DATATECHNICALManufacturer Global Invacom Ltd., Great BritainWeb www.globalinvacom.comE-mail Fibre@globalinvacom.comPhone +44-1621-743440Fax +44-1621-743676Models GISplit16pro and GISplit32proFunction 16 way and 32 way optical splittersCR typ. 6.25% and 3.125 % respectivelyInsertion loss typ. 13.3 dB and 16.8 dB respectivelyJacek PawlowskiTELE-audiovisionTest CenterPoland+–www.TELE-audiovision.com/10/09/globalinvacomMore about this company55www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志Very small insertion loss, close to theoreticalminimumAbsolutely noiseless, what allows you to buildsystems with a large number of outputs drivenfrom a single optical LNBIt seems to us that the manufacturer couldimprove a bit the mechanical design of thedevices to make the installation on the wallmore convenientExpert Opinionsystem in case of the GISplit-32pro. Evidently, we wereworking with very good sig-nals with so small amount ofnoise that it was comparablewith the noise threshold ofour signal analyzer. This lasttest was a crowning evidencethat the whole optical systemis almost noiseless and signalquality does not suffer at all.And how much splitting canyou get in real life? Well, theoptical LNB by GlobalInvacomgenerates about 7 dBm of op-tical power. The GISplit32prohas a specified insertion lossof 16.8. This means that atits output we can expect -9.8dBm. And the light-to-RF con-verter that we used in ourtest (GTU QUAD) is speci-fied for -15 through 0 dBm.It means that we still have a5 dB margin. Enough to use2-way optical splitter at everyone of 32 outputs of GISPlit-32pro to get more than 50optical outputs in total. Thetheoretical limit would be 64outputs, but it is recommend-ed to leave sufficient marginto allow for ageing of the la-ser and the odd output goingto maximum loss.Both GISplit16pro andGISplit32pro are really excel-lent building blocks you canrely on when building fiberoptics distribution systems.
56 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comPanodicHDT-275CTEST REPORT该独家报道由技术专家所作DVB-T2 CI Receiver
57www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志• perfect presentation of HDTV inDVB-T2• extremely fast channel switching• energy consumption in standbymode too low to measure• PVR function can be controlledvia EPG• pay TV reception thanks to CI
03-04/2013www.TELE-audiovision.com/13/03/panodic58 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comTEST REPORT DVB-T2 CI ReceiverDVB-T2 the WayIt Should Be27 x 16.5 x 4 cm, packagedinto an elegant case design – incase you’re wondering what theheck we’re talking about, this iswhat the new HDT-275C fromPanodic looks like. As early aswhen we unpacked this new re-ceiver the fact that Panodic hasopted to integrate DVB-T2 hasmet with our approval. Thanksto DVB-T2 support receptionof terrestrial HDTV is possi-ble, which is of particular sig-nificance since DVB-T2 trans-missions are available in mostcountries still endorsing DVB-Tas well, and in the medium tolong term DVB-T2 is en routeto replacing DVB-T in virtuallyall markets.A four-digit segment displayis located on the front panelof the HDT-275C which showseither the current time or thenumber of the selected chan-nel. Right next to it we findthe usual LED to indicate thereceiver status. A flap hidesthe CI slot which accepts allstandard conditional accessmodules, and a total of six but-tons are available on the frontpanel so that you can makeuse of Panodic’s new receivereven when the remote controlis misplaced or out of batteries.Turning our attention to theback panel, we notice a gen-erously equipped connectionboard, offering all options youmay ever require, with the ex-ception of a mechanical powerswitch. In detail, you get a tun-er input socket complete withloop-through output, a total ofsix RCA jacks for stereo audio,composite video and YUV, anHDMI socket, scart eurocon-nector for older SDTV devicesas well as a USB 2.0 interfacefor hooking up external stor-age media. If brilliant audiois what you’re after, you’ll bepleased to learn that Panodichas thought of a digital coaxaudio output as well.The remote control that isshipped with the receiver is onthe small side, yet its buttonsoffer a very pleasant pressurepoint and are clearly labelled.In general, the level of work-manship left us very satisfied,but we would not have expect-ed anything less from Panodic.One thing that deserves extra-special praise is the almostnon-existent power consump-tion in standby mode. In fact,it is so low our meter could notdetect any power consumptionat all, which means it is wayPanodic HDT-275CGreat receiver for the new HDTV erain digital terrestrial TVin future-proof DVB-T2below one Watt. What’s more,a low 13 Watts during everydayuse also add up to this receiv-er being not only good to theenvironment, but also to yourwallet!What has become common-place for most receivers thesedays is also available with thePanodic HDT-275C: a shortinstallation wizard that takescare of setting up the receiverin the first place and of cus-tomising many of the availableparameters. All you need to doin order to get going is selectyour region, preferred lan-guage, video mode and aspectratio.We did like the fact thatPanodic streamlines the wholeprocess with a number of smallbut meaningful enhancements.To give you just one example,the receiver suggests an on-screen language based on theregion selection which can beaccepted by the user, or over-ruled just as well.As far as video resolutionsare concerned, the followingoptions are available: 480i,480p, 576i, 576p, 720p 50 Hz,720p 60 Hz, 1080i 25 Hz, 1080i30 Hz, 1080p 50 Hz, 1080p 60Hz, 1080p 25 Hz, 1080p 30Hz, 1080p 24 Hz, as well as‘source’ and ‘native’. ‘Source’in this case means that the re-ceiver adjusts its output reso-lution to the broadcast that iscurrently received, while the‘native’ setting takes into ac-count the maximum resolutionof the TV panel.Thanks to 1080p support theHDT-275C is compatible withfull HD transmissions. The re-ceiver can automatically adjustthe aspect ratio based on thereceived material, or users canmanually choose either 16:9,4:3 Pan & Scan or 4:3 Letter-box.Once users have decided onthese three major items a touchof the OK button brings themright up one step to the auto-matic channel search. Whilethis sounds nicely straightfor-ward at first, we would haveliked more options here. Why?Imagine you’re using a smallDVB-T antenna with integratedamplifier – there would havebeen no way to turn on pow-er supply via the coax cablebefore starting the channelsearch and most probably thatsearch would have resulted innothing more than zero chan-nels, or very few high-poweredchannels at most. Luckily inour case, a UHF-VHF antennacombination installed on theroof of our test center providedthe signal, which means thatall active DVB-T and DVB-T2frequencies available at our lo-cation were detected in a littleless than four minutes. Whilefour minutes won’t break anyrecord it is still an acceptableresult, given that a full signalscan does not need to be per-formed on a regular basis. Assoon as the channel search iscompleted the receiver switch-es to the first channel on thelist and is thus ready to provideviewing pleasure.While it is true that mostbasic settings are taken careof thanks to the installationwizard, we nonetheless rec-ommend having a closer lookat the clearly structured mainmenu of the HDT-275C. It is di-vided up into six main sectionsand offers all adjustment andconfiguration option you’ll everneed.Considering the small num-ber of DVB-T and DVB-T2 chan-
0.531234559www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志1. Installation wizard of theHDT-275C2. Automatic channel search3. Channel list4. The recording time can beextended with a double click onthe Record button.5. Two channels can berecorded simultaneouslynels (as opposed to DVB-S orDVB-C) you won’t make use ofthe channel list managementoptions too frequently, but it’sstill good to know that all usualjobs such as deleting, mov-ing, renaming or PIN-lockingindividual channels can be ac-complished easily. In addition,a total of eight favourites listscan be set up und filled withchannels.Incidentally, Panodic hasopted to split up the overallchannel list into TV and radiosections, which additionallyenhances the overall user ex-perience. Thanks to the colour-coded buttons on the remotecontrol it is child’s play to cre-ate a tailor-made channel listsince each function can becalled up with a single touch ofa button.In case the channel offeringat a specific location chang-es users can keep up to datewith an automatic or manualchannel search, both of whichcan be accessed in the ‘Chan-nel Scan’ section of the mainmenu.If you opt for a manualsearch it is possible to enter afrequency or a channel num-ber of the UHF or VHF bands.Two bars on the bottom ofthe screen indicate right awaywhether or not the enteredvalues correspond to an activefrequency.We also appreciated the op-tion to restrict the automaticsearch to free-to-air channels.This way the channel list willonly include channels that canactually be watched withoutany pay TV subscription.In the Setup section of themenu you’ll find all basic ad-justment options to get thereceiver running, includingvideo resolution, region, OSDlanguage and aspect ratio. Soany time you need to makesome changes after havingrun through the initial installa-tion wizard this is the place togo. In addition, it is here thatyou can set up your preferredlanguage for audio, subtitles orteletext, as well as duration ofon-screen inserts and the in-ternal clock. You may set thetime manually or you can fallback on the time signal trans-mitted with the DVB standard.Based on a number of pre-defined time zones the differ-ence between GMT and yourlocal time can easily be set,since the receiver lists a num-ber of major cities in each timezone on the bottom of thescreen, which should help youselect the correct one.Being a fully-fledged PVRreceiver the HDT-275C comeswith a total of eight timer slotswhich can be set individually.Events can be marked for daily,weekly or monthly recording,which means you should nevermiss an episode of your favour-ite drama or sitcom show. Wealso appreciated all adjustmentoptions regarding contrast,colour saturation, sharpness
67891060 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comand colour space of on-screenmessages.It was more than once inthe past that OSD pop-ups ap-peared way too bright and wewould have loved a similar op-tion to create an experiencethat is more pleasing to theeye.Kudos to Panodic for not leav-ing out in the dark people withspecial needs: Its HDT-275Csupports playback of a descrip-tive audio track, if providedby the channel. The volume ofthe descriptive audio track caneven be adjusted in relation tothe regular soundtrack. Fami-lies with children will appreci-ate the fact that they cannotonly PIN-lock certain channelsbut also the entire main menu.In addition, the receiver usesage restrictions transmitted viathe EPG to block certain broad-casts from your children’s eyes,if required.Hidden away in the ‘Other’section of the main menu – andtherefore not too easy to findfor the average user – is theactivation of a supply voltagethat is transmitted via the coaxcable to the antenna amplifier.So finally we were able to re-solve that issue as well.Now that we have chewedover all technical specs andfeatures of the new PanodicHDT-275C, how about puttingit to actual use for a changeand watch HDTV on our TVpanel? So off we go: Everytime a new channel is selectedan info bar presents informa-tion on the current and nextevents, and pressing the INFObutton twice calls up extendedEPG information on the currentevent, if provided by the chan-nel. A touch of the OK buttonactivates the channel list whichmight look a little plain at firstsight, but provides wonderfulease of use.Once you have found a chan-nel you would like to watchyou need to press OK twiceto make sure the channel ap-6. Previous recordings arelisted in a user-friendly waycomplete with a small previewwindow7. TV and radio channels aremanaged in different sections8. Channels can be added toone of the eight favourites listwith a single touch a button9. Manual channel search10. The search can berestricted to free-to-airchannels onlypears on screen and the in-serted channel list disappears.The LEFT/RIGHT buttons takeyou through all of the eight fa-vourites lists, which can also becalled up directly with a dedi-cated button on the remotecontrol.We were truly impressed bythe lightning speed with whichthis receiver switches fromone channel to the next, whichtakes way less than one secondif both channels are transmit-ted on the same frequency andthus is comparable to the oldanalog times.We hooked up the HDT-275Cto a 42-inch LCD panel and us-ing 1080p Full HD the final re-sult was excellent, giving us noreason for complaint as long asthe original broadcast materialwas in native high-definition.What’s more, the wonderfulfeast for the eyes was comple-mented by flawless audio whenwe fed the digital audio to ouramplifier with a coax cable.These days an electronicprogram guide is a conditiosine qua non, and it goes with-out saying that the new Pan-odic HDT-275C is no exceptionto that rule. A touch of the EPGbutton on the remote calls upan overview which – we areafraid to say – is one thing thatfailed to impress us. This wasdue to the miniature size of theEPG on the screen, which inturn means there is hardly anyspace for content information.Obviously, Panodic tried tostrike a balance between theEPG window on the screenand the current channel thatis shown in the background.While we acknowledge the ef-fort we still cannot talk awaythe fact that the small EPG hasto provide information for fivechannels at a time and thereis no option to reduce that toone channel only – which wouldhave vastly enhanced our userexperience. The way the EPGis currently implemented is asomewhat cumbersome af-fair and navigation across fivechannels and a multitude ofevents borders on the tiresomeat times. But maybe it’s justus – we therefore suggest youhave a look at the screenshotsand decide for yourself.On a brighter note, we likedthat timer entries can be creat-ed right out of the EPG, with atotal of eight entries available.Another aspect we discov-
1112131462 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comered in everyday use and whichdeserves special praise is thatseveral dedicated function keyson the remote are available todirectly access features suchas favourites, audio language,video resolution, teletext orcontent available from an ex-ternal storage medium. Thisis a genuine time-saver, as itmeans you don’t have to workyourself through various sub-menus in order to find whatyou’re looking for.And while we’re at it, wefound it peculiar that the but-tons for audio, teletext, etc. arepositioned in the lower sectionof the remote control, while thesubtitles button is right in thetop line of keys, next to infoand mute.As soon as an external stor-age medium (USB harddisk,USB memory stick, etc.) is at-tached to the HDT-275C the re-ceiver miraculously turns intoa fully-fledged PVR receiverand offers all functions andfeatures required for record-ing and playing back content.Two recordings can take placesimultaneously while a third11. Language selection12. Video output options13. OSD settings14. Timer entries can berepeated daily, weekly ormonthly15. Child protection settings16. Each of the eight favouriteslists can be named individually17. The receiver can be set toplay back descriptive audiolouder than the general audiotrack18. The software of the HDT-275C can be updated with thehelp of an external storagemedium19. Integrated video game –Othello20. Integrated video game –Sudoku21. PVR settings22. Video player of the HDT-275C23. MP4 playback24. MP4 playback in SD or HDchannel is being watched live.As the receiver comes with asingle tuner only, all channelsthat cannot be watched whilean event is being recorded areblanked out on the channellist which creates a very user-friendly overview.Whenever we test a receiv-er, we test it really hard andthis time we programmed twoHDTV events for simultaneousrecording. Quite frankly, wewould not have been surprisedby an occasional performancehiccup, yet there wasn’t any.The HDT-275C acted like itwas the most natural job onearth and accomplished thismission without a glitch. Usingappropriate software like DVRStudio or ProjectX it is possibleto create a DVD on the PC us-ing the recordings made by thisreceiver. You may of coursechoose to simply save a filewith the recording as well.The HDT-275C comes with abuilt-in timeshift viewing fea-ture which can also be deacti-vated, if not required. Turnedon, it allows rewinding duringa live recording or even addingthe entire timeshift buffer toa manual recording. What thismeans in everyday use is thatyou can record an interestingevent in full even though youonly decided to do that someminutes into the broadcast. Allrecordings saved onto the stor-age medium are clearly listedin the integrated media playerand even come with a smallthumbnail picture. During play-back users can fast-forward orrewind with 2/4/8/16/24-foldspeed.It goes without saying thatPanodic has treated its HDT-275C to a video and audio play-er, as well as an image viewer.The video player will happilywork with all standard filessuch as MPEG, VOB, TS, MP4,WMV and DivX – the only thingit steadfastly refused in ourtest was flash video.
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DATATECHNICALManufacturer PanodicContact www.panodic.com/Contact.aspxInternet www.panodic.comModel HDT-275CFunction HD-ReceiverInput frequency VHF (177.5-226.5 MHz), UHF (474-858 MHz)EPG yesSupported standards ,Video resolution 480i, 480p, 576i, 576p, 720p 50 Hz, 720p 60 Hz, 1080i 25 Hz, 1080i 30 Hz, 1080p 50 Hz, 1080p 60 Hz, 1080p 25 Hz, 1080p 30 Hz, 1080p 24 HzRS232 noEthernet noUSB 2.0 yesHDTV yesMPEG4/H.264 yesSupportes languages/regions English, French, German, Spanish, Italien, Greek, Portugiese, Russian, Polish, Croatian, Slovenian, Czek, Hungarian, Danish, RumanianDimensions 27 x 16.5 x 4 cmWeight 0,76 kgDIAGRAMENERGYActive PowerApparent PowerMode Apparent Active FactorActive 13 W 7 W 0.53StandBy 0 W 0 W 1+–Thomas HaringTELE-audiovisionTest CenterAustriawww.TELE-audiovision.com/12/03/panodicMore about this company65www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志Active use with channel switching, playback via USB, etc. in thefirst 15 minutes, followed by 15 minutes of standby.Reliable DVB-T2 receiver that will make for auseful addition to any lounge room TV rackand is easy to operate. Impressively fastchannel switching, extremely low power con-sumption in standby mode and user-friendlysoftware. The level of workmanship is excel-lent.We found the remote control to be a little bit too small, andthe electronic program guide (EPG) did not quite meet ourexpectations either.Expert Opinion25. MP3 playback26. Image viewer27. Slideshow mode28. The receiver happilyaccepted our Cryptoworks CImodule29. A channel with Cryptoworksencryption was decrypted andpresented by the receiver30. EPG31. Info bar32. Extended EPG informationThe audio player, on the oth-er hand, turns out to be muchless versatile and requires MP3,and MP3 only. It does make upfor that drawback with a trulyuseful playlist feature, plusit’s no big deal these days toconvert WMA and MP4A filesinto the MP3 format. A Googlesearch is all that’s required tofind an endless supply of freeconversion software.The built in image viewerperformed reliably and can beset to present all of your holi-day photos in a slideshow. Youcan even determine how longeach photo will be shown inorder not to try your friends’patience too hard. To sum up,we were thoroughly happy withthe HDT-275C during our test.Offering all functions and fea-tures required for DVB-T2 re-ception, it actually surpassesmany of its peers in a numberof fields. Nonetheless, Panodicnever rests on its laurels andis constantly improving thesoftware of its products. A USBstorage medium is all that isrequired to update the box’sfirmware or operating system.And whenever those com-mercial breaks seem to dragon forever, you can kill sometime with one of the two builtin games (Othello and Sudoku),or why not do some old-fash-ioned teletext surfing for achange? There’s only one issuewe haven’t dealt with so far:the CI slot. But rest assured,it gets the green light from usright away, since it is a perfectmatch for pay TV reception. Allthis makes the Panodic HDT-275C the right companion forboth worlds, free-to-air-recep-tion and pay TV.
■66 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comKCC110AF Channel Converter Processor andKLA110AF Launch Amplifier Power SupplyTEST REPORT该独家报道由技术专家所作DTT Headend
67www.TELE-audiovision.com — 03-04/2013 — TELE-audiovision International — 全球发行量最大的数字电视杂志Antiferenceby Kingray• receives only the desired channels andfilters out any interferences• ideally suited to be save against LTE signals• can be controlled remotedly via Internet• capable of adjacent channels• its quality is so good you could use it as asource for a transmitter
■03-04/2013www.TELE-audiovision.com/13/03/antiference68 TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine — 03-04/2013 — www.TELE-audiovision.comA ProfessionalDTT HeadendTEST REPORT DTT HeadendFrequency spectrum is avaluable asset. There arevarious international andnational bodies who grantparts of the spectrum forparticular services. Digitaltelevision is just one of suchservices and it has to coex-ist with the others like thenew LTE Internet communi-cation, or digital radio DABor the old FM radio. Suchcoexisting services, even ifthey occupy different butneighboring frequencies,could negatively interactwith one another.In a cable system supply-ing terrestrial TV signals toevery apartment in a largeblock, apart from install-ing cables and splitters, weneed to significantly ampli-fy the signal received fromthe antennas on the roof.Should we do that with asimple wideband amplifier,the signal reaching manyapartments would be verynoisy. That is because therewould be inevitable inter-modulation in a high gainamplifier and many unde-sired spurious signals wouldbe created.No matter if this is theold analog technology orthe modern contemporarydigital communication, thesolution is always the same:block unwanted interfer-ence signals and only thenprocess what is left – yourdesired signal. And suchanti-interference functionis the main feature of thenew headend offered byAntiference in the UK. It isdesigned to receive up toten different DTT channels,filter them from unwanted“neighbors”, amplify andthen move them to otherfrequencies if desired. So, itis not for converting terres-trial or satellite TV to cableTV. This headend by Antifer-ence is a chain link of a ter-restrial distribution system.If you add a suitable trans-mitter and antenna at theoutput of this headend, youcould convert it to a TV re-peater retransmitting DTTchannels on different fre-quencies.Oh, and we are intention-ally using the term DTThere, because this headendis designed for any digitalchannel with 7 or 8 MHzbandwidth and this meansDVB-T/T2 as well as theChinese DTMB standard.Other DTT modes like ATSCor ISDB-T are based on 6MHz channel bandwidth andwould not be suited for theKingray headend by Antifer-ence.Antiference provided uswith the KR-110 headendrack, the KLA-110 LaunchAmplifier/Power Supplyand three KCC-110 Chan-nel Convertor/Processorunits. Workmanship of allthe components left abso-lutely nothing to be desired.Everything looked perfectlyfinished off. Antiferenceeven attached a foiled paperwith a channel plan listingchannel numbers and cor-responding frequencies foranalog and digital channels.This is a nice accessory andit proves that the manufac-turer really cares about thecustomer. The accompany-TELE-satellite editor JacekPawlowski testing the Kingrayheadend by Antiference. In hissetup he connected the systemto a live DTT signals andmeasured the output results.KLA-110 Launch Amplifier &KCC-110 Channel Convertor/ProcessorProfessional handlingof DTT signals