SEFRAM 7817B User Manual Download Page 54

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7849B

– 7859B – 7817B

11.6 DVB-T

Display of the measures of:



BERi

error rate before Viterbi



BERo

error rate after Viterbi



PER

error rate after Reed Solomon (error rate packet)



MER

modulation error rate



LKM

noise margin (Link Margin)

BERx

: ‘bits’ error rate

Ratio between the number of false bits / number of transmitted bits during the measurement time

PER

: ‘paquets’ error rate

Ratio between the number of false packets / number of transmitted packets during the measurement time

Recall: Under DVB-T/H, a packet is made of 204 octets; a packet is "false" if it includes more than 8 wrong
octets (correction by Reed Solomon coding).

Display of the value of Cell ID from the diffuser and specific to the emitter.

TUNER

DEMODULATEUR

VITERBI

REED

SOLOMON

DECODAGE

MPEG

PER

BERi

BERo

Summary of Contents for 7817B

Page 1: ...der international and US copyright laws as un published works They are confidential and proprietary to Dolby laboratories Their reproduction or disclo sure in whole or in part or the production of der...

Page 2: ...7849B 7859B 7817B p 2 Revision follow up Version Date Modified chapters Nature of modification 1 0 January 2020 All Creation of the document...

Page 3: ...liances To obtain the best performance from this product please read this manual carefully For more information please contact our different services 04 77 59 01 01 E mail Sales department sales sefra...

Page 4: ...remaining duration of the guarantee if the appliance is still under guarantee If the guarantee duration is less than 90 days the replaced part is guaranteed for 90 days Any replacement part becomes t...

Page 5: ...C 50 20 RH The MDC should have been working for 0 5 hour before check We recommend that you have this control made by our after sales service Service Apr s Vente for the best service and preservation...

Page 6: ...LLITE dish 19 4 2 1 Use of the POINTING function 19 4 2 2 Use of the SPECTRUM function 22 4 3 Verifying an installation 25 5 Man machine interface 26 5 1 Content of the screen 26 5 2 Lists of measurem...

Page 7: ...DVB C2 57 11 10 DVB S DSS 58 11 11 DVB S2 S2X 59 11 12 Multistream 60 12 Spectrum analyzer 61 13 Image and Sound 62 13 1 Digital TV 62 13 2 External analog video 63 13 3 Audio 63 13 4 Table of servic...

Page 8: ...s 85 19 4 1 View 86 19 4 2 Save 87 19 4 3 Update 88 19 5 Factory recovery 88 19 6 Configuration import export 89 20 Software update 90 21 Save 91 22 Connection of the appliance to a PC 92 23 Displayed...

Page 9: ...n it In such a case it is required to use Sefram spare parts Do not open the appliance risk of electric shock You should use the F F adaptor provided with your measuring instrument Any other adaptor c...

Page 10: ...7B p 10 Symbols on the appliance Attention Refer to the manual Shows a risk of damage for the material connected to the in strument or to the instrument itself Ground Grounded accessible parts Product...

Page 11: ...BER MER they allow the full validation of digital transmissions DVB T T2 T2Lite DVB C C2 DVB S S2 S2X and DSS Providing a Constellation diagram for digital standards the detection and display of Multi...

Page 12: ...of the appliance Fas tening for straps 7 capacitive touchscreen high resolu tion RF input socket A V input socket ON OFF switch USB A socket Ethernet socket External power socket 15 V 5 A max Chargin...

Page 13: ...battery risk of explosion Do not drill Do not disassemble the battery pack Do not reverse the polarities of the battery This battery pack includes a protective item that should not be damaged or remo...

Page 14: ...rovided is an external power supply too Only use the power supply block provided with the appliance Use of another mains block could damage your appliance and would not valid the guarantee 3 4 Turning...

Page 15: ...page press Select the emitter to point to in the pre informed list example ST ETIENNE The device successively scans 4 channels and gives an RF indication corresponding to the level of the signal rece...

Page 16: ...our transmitter by displaying the TV channels of each channel The 4 frequencies or channels of the transmitter you are trying to point are changeable depending on your loca tion You can save a new tra...

Page 17: ...4 1 2 Use of the SPECTRUM function Turn your appliance on Press the Measures key Press the Spectrum function Access to full SPAN mode Choose a known CHANNEL Adjust slowly the antenna to get the most p...

Page 18: ...the NIT key the device find automatically all the parameters of the signal Once the search ended the device display the Network Name and the Network ID You can now do all the measurements level BER M...

Page 19: ...press Select a satellite like in the example below here Astra1 The device successively scans 4 transponders and gives an RF indication corresponding to the level of the signal received on the antenna...

Page 20: ...current consumed by your dish s LNB To check if the aimed satellite is the right one press the NIT key The appliance searches the MPEG NIT table on one of the 4 transponders and displays the name of...

Page 21: ...te you must be locked on all 4 transponders Quality 0 However some transponders are regularly modified See the frequency range of the sat ellite when a transponder does not seem to work Some switches...

Page 22: ...2 2 Use of the SPECTRUM function Turn your appliance on Press the Measures key Press the Spectrum function Access to full SPAN mode Choose a known TRANSPONDER Adjust slowly the dish to get the most p...

Page 23: ...7859B 7817B p 23 Reminder a satellite antenna must be powered by direct current remote power supply To access to the Remote power supply page press Check for tension and current consumed by your dish...

Page 24: ...ress the button The device automatically searches for signal settings Once the search is complete the device displays the Network Name and the Network id You can now do all the measurements level BER...

Page 25: ...matically detects all distributed channels and scans them one after the other through the MEASUREMENT MAP function Presse the key Home then press Autoset See more details in the AUTOSET chapter Once t...

Page 26: ...ze the keys by their dark grey frame example the Home key The Home page allows the navigation through all functions of the appliance config measures On all pages is displayed the following information...

Page 27: ...and down the table To move faster you can slide a cursor with your fingers To validate the choice of a line of a table simply press this line choosing a program channel choosing a signal setting choo...

Page 28: ...e same installation may use two satellite dishes ASTRA 19 2 in DiSEqC position A HOT BIRD 13 in DiSEqC position B Another one may use three satellite dishes ATLANTIC BIRD 3 in DiSEqC position A ASTRA...

Page 29: ...acters a place name in 10 characters a frequency a channel number in terrestrial or cable mode a frequency map in terrestrial or cable mode a vertical or horizontal polarization in satellite mode a lo...

Page 30: ...n measurements Pressing Home then Lists Library gives you access to the Lists function Lists are ranked from 0 to 19 To select the one you want press the following key Lists are displayed Press the on...

Page 31: ...hows up Type the new name SEFRAM in our example To add a setup to the list select the line A window shows up By pressing the key before Setup you disclose the available setups from the library you can...

Page 32: ...ou want to add to your list Press the line you want The setup is now in the list You may erase the setup from the list by pressing the check to the left of the setup or to the setups you have to delet...

Page 33: ...lity of a list by pressing directly on the basket then by selecting In a satellite setup you can change the switch the Uncommitted Port and the DCSS by activating any of these keys this change will af...

Page 34: ...ess the Lists function From there you can access the Library by pressing the key 7 2 Creation or modification of setups in the library To create or change a setup in the library you have to select a l...

Page 35: ...tup Under standard DVB T T2 Under standard DVB C C2 In terrestrial analogical standard L BG DK I and MN To enter the frequen cy band you want for the setup To enter the Emit ter Satellite name you wan...

Page 36: ...7849B 7859B 7817B p 36 Satellite Setup To enter the type of polarity you want for the setup high or low vertical or horizontal To enter the symbol rate you want for the setup...

Page 37: ...ders and gives an RF indication corresponding to the level of the signal received on the antenna and QUALITY corresponding to the quality of the signal re ceived on the antenna The satellite is chosen...

Page 38: ...to the appliance and start it up 2 Validate the remote power supply VDC lights up Check the power supply current of the LNB IDC at the top right corner of the screen should be between 50 and 200 mA Se...

Page 39: ...ht satellite press the NIT key The appliance searches the MPEG NIT table on one of the 4 transponders and displays the name of the satellite Attention To identify a satellite it must be synchronized o...

Page 40: ...has 2 single LNB staggered from 19 16 3 de grees plus a DISEQC switch with ASTRA on PosA and HOTBIRD on PosB The operation is the same as simple pointing mode plug power LNB pointing To access the do...

Page 41: ...ne with reference to the north Measured in degrees Elevation Tilt angle under which the beam from the satellite reaches your antenna Measured in degrees using what is specified on the stand of the sat...

Page 42: ...channels and gives an RF indication corresponding to the level of the signal received on the antenna and QUALITY corresponding to the quality of the signal received on the antenna The choice of issue...

Page 43: ...to Configuration then Import 9 3 Instruction for use 1 Connect the antenna to the device and turn it on 2 on the Home page switch to pointing mode Choose which transmitter to point to in the list exam...

Page 44: ...f the device is synchronized across four channels and the reception quality is good it is green 9 4 V rification de l metteur point To check if the pointed transmitter is the right one press the butto...

Page 45: ...through the key on page Home Attention The Autoset channel research is only possible when at least one list is empty with enough place in the library The displayed lines on this page depend on the sel...

Page 46: ...atic research on the terrestrial frequency band The table allows the selection of Standards Channel widths The channel range of the research i e 21 to 60 The goal is to make researches shorter by defi...

Page 47: ...function Any detected channel will be registered into the first empty list automatically renamed AUTOSET and into the fist available setups of the library starting from the end of the table The new l...

Page 48: ...a memorized program in the current list see chapter Measurement list use the AutoLock function if you don t know the parameters of the signal you receive You can shift from terrestrial to satellite mo...

Page 49: ...esponding channel number for terrestrial and cable mode The symbol rate for the satellite The polarization and the band for the satellite The audio mode for the analogical TV 11 2 Utilisation de la Li...

Page 50: ...signal Example for terrestrial channel 38 frequency 610MHz 11 4 Level measurements You can measure levels at a specific frequency with a detection matching the standard In terrestrial band for an user...

Page 51: ...omatically makes level measurements on the Video carrier wave The following table sums up the measurement types and the frequencies of the audio carrier waves for each standard Standard Video carrier...

Page 52: ...ER Packet Error Rate and the MER Modulation Error Ratio under DVB T T2 T2Lite DVB C C2 DVB S S2 or DSS You also get the LKM x xdB Link Margin specification This expression in dB is the difference betw...

Page 53: ...7849B 7859B 7817B p 53 You can shift from terrestrial to satellite mode by Changing the setup frequency Changing of standard Changing of setup from a terrestrial to a satellite setup...

Page 54: ...false bits number of transmitted bits during the measurement time PER paquets error rate Ratio between the number of false packets number of transmitted packets during the measurement time Recall Unde...

Page 55: ...on error rate LKM noise margin Link Margin Recall LDPC Low Density Parity Check BCH Bose Chauhuri Houquenohem The concatenation Viterbi Reed Solomon of the correction of DVB T H has been replaced by t...

Page 56: ...bits Ratio between the number of false bits number of transmitted bits during the measurement time PER error rate packets Ratio between the number of false packets number of transmitted packets during...

Page 57: ...efore LDPC BERo error rate after LDPC PER error rate after BCH lost packets MER modulation error rate LKM noise margin Link Margin Recall LDPC Low Density Parity Check BCH Bose Chauhuri Houquenohem Ac...

Page 58: ...ween the number of false bits number of transmitted bits during the measurement time PER error rate paquets Ratio between the number of false packets number of transmitted packets during the measure m...

Page 59: ...all LDPC Low Density Parity Check BCH Bose Chauhuri Houquenohem The concatenation Viterbi Reed Solomon of the correction of DVB S has been replaced by the concatena tion LDPC BCH under DVB S2 The stan...

Page 60: ...nsported on the same transponder simultaneously Example broadcasting of the two multiplexes of the TNT on Eutelsat 5 West A 5 W inside the same tran sponder Frequency 12648MHz Vertical DVB S2 29500 IS...

Page 61: ...o the level of the signals measured Filters are automatically selected according to the Span The filter used is displayed on the upper left corner Parameters of the spectrum are Channel use a chan nel...

Page 62: ...service and its main characteristics are displayed on top left of the screen image resolution e g HD 1920x1080i 1920 pixels per line 1080 lines interlaced scan 25 Hz frame frequency MPEG 2 or MPEG 4...

Page 63: ...oormen 13 3 Audio To set the volume press an adjustment bar shows up The instrument can decode the following digital sound formats MPEG 1 L1 L2 AAC Advanced Audio Coding License Via Licensing HE AAC H...

Page 64: ...7849B 7859B 7817B p 64 13 4 Table of services Pressing gives access to the list of services This function allows selecting the channel you want to display You only have to press the line you want...

Page 65: ...Satellite you can control all the DiSEqc equipment present on your installation To start the remote power supply press the key Remote supply 14 1 Terrestrial band 14 1 1 Power ON In terrestrial mode y...

Page 66: ...emote power supply under satellite measure AUTO to launch au tomatically the re mote power supply in satellite measure mode even after shutting off LNB LNB type and local oscillators LO1 low band and...

Page 67: ...00 to 2400MHz no local oscillator frequency OL C band frequencies from 3 650 to 4 200 GHz local oscillator frequency 5150MHz OL adjustable Ku band frequencies from 10 700 to 12 750 GHz local oscillato...

Page 68: ...iSEqC Committed or Uncommitted 16 satellites switch DiSEqC Committed Uncommitted Sat A Sat B Com 2 1 Sat A Sat B Sat D Sat C Com Sat A Sat B Sat D Sat C Com Sat A Sat B Sat D Sat C Com Sat A Sat B Sat...

Page 69: ...Pos A Option A Position A Pos 3 Input 3 10 Pos B Option A Position B Pos 3 Input 3 11 Pos C Option B Position A Pos 3 Input 3 12 Pos D Option B Position B Pos 3 Input 3 13 Pos A Option A Position A Po...

Page 70: ...the DiSEqC protocol that allows the connection of several receptors on only one coaxial cable no matter the band H L and the polarization H V Functioning Each satellite receptor uses a fix frequency...

Page 71: ...Distribution of the satellite signal with only one coaxial cable to a maximum of 32 different receptors Using Diseqc 2 0 bi directionnal possibility to ask current online devices and speed up install...

Page 72: ...ISEQC2 0 based 14 2 8 Influence of the DCSS on the spectrum analyzer The frequency of the cursor in spectrum remains fixed this is the central frequency of the slot The frequency of the requested tran...

Page 73: ...vailable if one of these standards is running in the LEVEL MEASUREMENT page DVB T T2 DVB C C2 DVB S S2 DSS The appliance displays the Constellation of the current signal The information displayed on t...

Page 74: ...oving measurement arrow can be done by screen touch or by automatic search keys and The end of the guard interval is displayed with a yellow line Reminder Remember In terrestrial TV broadcasting the r...

Page 75: ...ntenna or by selecting a more di rective antenna The Echo function of the appliance enables you to display possible echoes that disturb the received signal Relative amplitude in dB and delay in s dist...

Page 76: ...ement list with labeling of the levels beyond tolerance BERi BERo and PER are generic terms frequently used BERi BER in inner BER first BER treated by the demodulator BER channel CBER LDPC BERo BER ou...

Page 77: ...asurement map has not been totally scanned yet green the measurement map has been totally scanned In case of mixed measurement map terrestrial satellite the satellite remote power supply has priority...

Page 78: ...with fiber wiring LNB optical fiber output after a satellite terrestrial coupler The function measures the optical power of the light carrying the signal in the fiber converts the light signal into an...

Page 79: ...e optical sig nal Optical fibers are made of a core a cladding and at least one protection There are two kinds of optical fibers multimode and single mode The difference is the size of the core inside...

Page 80: ...addition to an increased risk of damaging the connector there will be automatically a 4dB decrease of the optical level which means 8dB for RF Thus you will have to take great care of the connections...

Page 81: ...ke measurements everywhere on your installation to check losses of the optical signal Warning The appliance can measure only one wavelength at a time If there are several wave lengths measurements wil...

Page 82: ...powered independently To display the signal at the output of your installation you must connect the RF output of the optical option to the RF input of the appliance via the provided angled F F cable...

Page 83: ...2 3 Installation of a dish and or your terrestrial antenna see chapter 2 2 2 Installation of a terrestrial antenna Once the measurements are made put the plug onto the optical socket of the appliance...

Page 84: ...You can select your language by pressing the flag below Press the flag corresponding to your language 19 2 Measurement unit This key allows you to select the measurement unit of the appliance dB V 0 d...

Page 85: ...or any other feature see chapter Save The number of saved file and their memory size are displayed When pressing this key a pull down menu lists the previously saved files The first column contains t...

Page 86: ...7849B 7859B 7817B p 86 By pressing a line of the table you open a window 19 4 1 View This key allows the display of the content of the file info device file name...

Page 87: ...a report in a PC computer Here is the BMP file of the previously displayed DVB T H channel edited on PC to have the spectrum full screen Save CSV USB allows you to export the file to the USB stick un...

Page 88: ...for the spectrum measurements BER MER for the error rate measurements CONST for the constellations ECHO for the echoes Save all CSV USB also records all files from the appliance into separated registe...

Page 89: ...t export You can make a backup on a USB stick of your setups lists of your appliance by pushing Configuration Export And you can import from a USB stick this configuration with the touch Configuration...

Page 90: ...r computer Turn your appliance on Go to the Home page press configuration Insert the USB stick into the connector of the appliance Select Update Attention Do not turn the appliance off while updating...

Page 91: ...name of the save is MEM X 1 X is the number of saves in the appliance You will be suggested a save into internal memory only in the Spectrum Measurements Constellation Guard interval and Measurement...

Page 92: ...able in option with the num ber 298504246 asking SEFRAM Configuration of the connection Ethernet connection of your appliance to the PC To change the IP address of your appliance press and The PC soft...

Page 93: ...subnet mask in the ap pliance 3 Type the same IP address and subnet mask in the PC software you re using Attention If the PC has already been connected to Ethernet network modem it is necessary to reb...

Page 94: ...ppliance may display messages while working 23 1 Alert messages Low battery the appliance is about to shut off in a few minutes Confirmation request for an important action Remote power supply issue v...

Page 95: ...x plains the issue 23 2 Error messages A message may show up at the bottom of the screen immediately after updating the software Do not take care of as far as it does not show up at a second start up...

Page 96: ...he best possible use of the characteristics and the preservation of the product Routine maintenance The basic maintenance is simply cleaning the outside of the appliance Any other operation requires a...

Page 97: ...mounting of the screen on your instrument to the re spect of the acceptance conditions of the manufacturers Acceptance criteria Zone A central zone total less than 5 defective pixels less than 3 conti...

Page 98: ...m DVB S2X O O MPEG2 4 SD HD A V analog video input Spectrum analyzer Display TV PID NIT Constellation DVB T T2 Multipath DVB T T2 Terrestrial antenna pointing Satellite dish pointing single and dual L...

Page 99: ...1 MHz to full span 1 2 5 step Speed 100 ms mini 1000 ms maxi Filters according to span 1 6kHz 3 2kHz 8kHz 16kHz 32kHz 80kHz 160kHz 320kHz 800kHz 1 6MHz 3 2MHz Attenuator automatic or manual 0 to 55 dB...

Page 100: ...nterval 1 4 1 8 1 16 1 32 Spectrum inversion auto HP LP PLP Data Slice HP LP Standards ETS 300 744 DVB T2 T2 Lite Bit Error Rate BER LDPC BERi BCH BERo FER frame error PER Noise margin Modulation Erro...

Page 101: ...4 128 256 QAM Spectrum inversion auto Standards ETS 300 429 DVB C2 Bit Error Rate BER LDPC BERi BCH BERo FER frame error PER Noise margin Modulation Error Rate MER 25 35dB Sensitivity 55dB V Symbole r...

Page 102: ...9 9 10 8PSK 2 3 3 4 3 5 5 6 8 9 9 10 16APSK 2 3 3 4 4 5 5 6 8 9 9 10 32APSK 3 4 4 5 5 6 8 9 9 10 Roll off 0 20 0 25 0 35 Spectrum inversion auto Standards ETS 302 307 Part 1 DVB S2X Bit Error Rate BE...

Page 103: ...1550nm Connector FC APC Optical power measurement Measurement dynamic 50 0dBm to 10dBm Accuracy 0 5dB Optical to RF converter Conversion dynamics 12dBm to 3dBm Input optical bandwidth 50MHz to 5450MH...

Page 104: ...eo 75 Ohms 1Vpp max audio 10 kOhms Interfaces USB A Ethernet 10 100baseT RJ45 DC supply input jack 5 5 mm 15 V max 1 A max Remote supply Terrestrial Satellite Voltage 5V 13V 18 V 24V 500 mA max 300mA...

Page 105: ...5 mm Weight 1 350 kg 1 The autonomy is set at 25 C with the brightness of the screen decreased with and without Remote power supply no interface connected and 10 sound 25 7 Accessories Supplied with m...

Page 106: ...mW into 75 ohms N 10 log Pd Pr with Pd Ud 75 Ud 1 V N 0 dB V N 60 dBmV N 108 75 dBm Ud 1 mV N 60 dB V N 0 dBmV N 48 75 dBm Ud 1 V N 120 dB V N 60 dBmV N 11 25 dBm 25 9 Typical values for measurements...

Page 107: ...uquenohem Algorithm used to correct errors in transmissions of digital satellite DVB S2 signals BER Bit Error Rate Calculation of the erroneous bits with regard to the number of transmitted bits BER d...

Page 108: ...high as possible To adjust the counter polarization you have to turn the head of the dish DAB Digital Audio Broadcasting The Digital Audio Broadcasting is a standardized audio broadcasting system code...

Page 109: ...rsal head is a standard converter for the analogical and digital reception of a satellite The reception is made on 2 low high frequency band and 2 horizontal vertical polarizations of the received wav...

Page 110: ...rate A multiplex enables the diffusion of 6 programs in standard definition NIT Network Information Table Information about the network package Enables the display of a description of the measured tra...

Page 111: ...the rotation of a satellite dish Positioners are operated by DiSEqC commands QAM Quadrature Amplitude Modulation This kind of modulation is used for digital transmissions cable networks and DTT QPSK...

Page 112: ...pixels Pour comparer l informatique un t l viseur cor respond une r solution SVGA 800 x 600 La proportion de l image est de 4 3 rapport largeur hauteur En t l vision HD l image est constitu e de 1080...

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SEFRAM 7817B, User Manual

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