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Web GUI Monitoring & Control

Figure 4.15: Equalizer Frequency Domain Response Window

4.7.3.4

Physical Layer Statistics

The physical layer statistics function may be selected by clicking on the fifth icon, in the row of
seven. A window, similar to that displayed in Figure 4.16 is displayed with the selected icon
highlighted in blue.

Figure 4.16: Physical Layer Statistics Window

4-18

SBD75e Series Demodulator Installation and Operation Manual

Summary of Contents for SBD75e Series

Page 1: ... Series Demodulator L Band Satellite Demodulator 32 k 45 M Symbol BPSK QPSK OQPSK 8PSK 16QAM 32APSK Installation and Operation Manual Version 1 0 November 2008 Copyright 2008 AdvantechAMT All rights reserved ...

Page 2: ...ecializing in the development of satellite communication systems The following information provides the document part number revision the copyright notices along with the pertinent FCC English German and French compliance and the serviceability of the Demodulator Document Revision Revision Date Content Modifications 1 0 November 2008 First Issue 1 1 November 2009 Added De Concentrator functionalit...

Page 3: ... S Office European Office 4710 E Elwood Street 39 Edison Road Suite 14 St Ives Huntingdon Phoenix AZ 85040 Cambridgeshire PE27 3LF Tel 1 480 784 4646 Tel 44 1480 357 600 Fax 1 480 784 1010 Fax 44 1480 357 601 SBD75e Series Demodulator Installation and Operation Manual iii Advantech Wireless Email info advantechwireless com Advantech Wireless Inc AdvantechAMT Ltd You can also visit our website at h...

Page 4: ...er and or other Product markings have been removed defaced or altered ADVANTECH AMT may at its discretion perform out of warranty repairs at ADVANTECH AMT facilities in exchange of customary charges or offer a written agreement extending the terms of this warranty at a price stated in such agreement All repairs performed out of warranty or pursuant to an extended warranty agreement shall be subjec...

Page 5: ...LL BE EASILY ACCESSIBLE 3 REMOVE POWER PLUG FROM THE POWER SOCKET BEFORE PERFORMING ANY SERVICE WORK ON THE UNIT 4 ONLY FACTORY AUTHORIZED SERVICE PERSONNEL SHOULD PERFORM SERVICE ON THIS UNIT FAILURE TO OBSERVE THIS WARNING CAN RESULT IN MALFUNCTION TO THE UNIT AS WELL AS ELECTROCUTION TO PERSONNEL France AVERTISSEMENT 1 AFIN DE NE PAS NUIRE AU PROCESSUS DE REFROIDISSEMENT IL EST NÉCESSAIRE DE LA...

Page 6: ... including important safety information details the base unit connectors and cables Chapter 3 Front Panel Monitoring Control Describes how to configure the unit using the front panel display Chapter 4 Web GUI Monitoring Control Describes how to configure the unit using the Web Graphical User Interface Appendix A Technical Specification Details the technical specification for the equipment includin...

Page 7: ...acuum Fluorescent Display VFD 1 4 1 3 2 2 LED Indicators 1 4 1 3 2 3 Keypad 1 5 1 3 3 Rear Panel 1 6 1 4 Typical System Setup 1 7 List of Figures Figure 1 1 SBD75e Demodulator Block Diagram 1 3 Figure 1 2 SBD75e Demodulator Front Panel 1 4 Figure 1 3 Front Panel LED Indicators 1 4 Figure 1 4 Front Panel Keypad 1 5 Figure 1 5 SBD75e Demodulator Rear Panel 1 6 Figure 1 6 Demodulator Signal Interconn...

Page 8: ...er 1 1 3 Equipment Covered by this Manual This manual covers the SBD75e L Band Satellite Demodulator 1 1 4 RF Interface Options The SBD75e Demodulator has two RF L Band Inputs 950 2150 MHz 1 1 4 1 L Band Input 950 2150 MHz The Demodulator is capable of being used in conjunction with most C Band or Ku Band LNBs or BDCs with L Band RF frequencies in the range of 950 2150 MHz For L Band operation the...

Page 9: ...r Correction FEC code bits added to data symbols to check and correct errors in the received data symbols De multiplexes the data signal into required streams for the output interface RF Input Channel 2 L Band RF Input Channel 1 L Band ASI 1 Data interface to terrestrial equipment depending on system requirements RS232 M C ASI 2 ASI 3 ASI 4 Down converter Demodulator BPSK QPSK 8PSK QAM 16QAM FEC D...

Page 10: ...1 1 SBD75e Front Panel LEDs LED Name Colour Function BUC Power Green Indicates that the BUC power is enabled LNB Power Green Indicates that the LNB power is enabled Transmit On Green Indicates that the modulator is transmitting Receive 1 Fault Red Indicates that the Demodulator channel is not locked to a received signal Receive 2 Fault Red Reserved Transmit Fault Red Indicates that the modulator i...

Page 11: ...on The symbols on the display indicate options above and below On some menus with a large number of options then the selection will wrap around These keys can also be used when editing parameters either from a list or numerically incrementing or decrementing values including hexadecimal When a parameter requires a indicator then these keys are used to toggle between them WX These keys are used to ...

Page 12: ...etails including pin outs are described in Chapter 2 Installation Figure 1 5 SBD75e Demodulator Rear Panel ON OFF Switch RF INPUT CHANNEL 1 2 Connectors M C DEMOD Connector ASI 1 2 3 4 Connectors RS232 Connector AC Power Connector ALARM Connector 1 6 SBD75e Series Demodulator Installation and Operation Manual ...

Page 13: ...following diagram shows a typical system setup and signal interconnections For detailed connector information see Chapter 2 Installation Figure 1 6 Demodulator Signal Interconnections SBD75e Series Demodulator Installation and Operation Manual 1 7 ...

Page 14: ...Getting Started 1 8 SBD75e Series Demodulator Installation and Operation Manual ...

Page 15: ...cal Earth 2 8 2 6 Signal Connections 2 9 2 6 1 M C Connector RS232 2 9 2 6 2 M C Connector 10 100BaseT Ethernet 2 9 2 6 3 Alarms Connector 2 10 2 6 4 RF L Band Input Connector 2 10 2 6 5 ASI Output Connector 2 10 2 7 Configuring the Demodulator for Best Performance 2 11 2 7 1 Demodulator Acquisition Tips 2 11 2 7 2 BER Measurement 2 12 List of Figures Figure 2 1 Rack Mount Support Kit 2 5 Figure 2...

Page 16: ...or other electronic equipment That is the building should be free from excessive dust and moisture The room should not exceed the recommended temperature range defined in Appendix B Technical Specifications The installation location should allow for ample airflow Also allow extra room for service access to cables and wiring 2 1 3 EMC Compliance Statements1 2 1 3 1 EN 55022 This equipment is a Clas...

Page 17: ... the equipment whilst it is still connected to the supply or other leads is live or is in operation 2 3 Unpacking and Inspection Check for damage to the outside and the inside of the shipping container If there is any damage contact Customer Service and the shipping carrier to report it 2 3 1 Unpacking To insure safety and proper operation of this equipment use the following unpacking and repackag...

Page 18: ...ons shown below Do not block the air holes or the fan cut outs at the back panel of the unit These openings must be kept clear for the proper cooling of the equipment Do not place the units beside each other or on top of each other The exhaust from one unit can be drawn into the air intake of another Make sure the room is properly cooled Normal cooling may not be sufficient for locations where the...

Page 19: ...ignal leads 2 4 3 Equipment Access Ensure that the SBD75e Demodulator is installed in such a way as to allow access to the rear of the unit and the connectors 2 4 4 Ventilation WARNING NEVER PUSH OBJECTS OF ANY KIND INTO THIS EQUIPMENT THROUGH OPENINGS AS THEY MAY TOUCH DANGEROUS VOLTAGE POINTS OR SHORT OUT PARTS THAT COULD RESULT IN A FIRE OR ELECTRIC SHOCK NEVER SPILL LIQUID OF ANY KIND ON THE P...

Page 20: ...ort Figure 2 2 Air Path through the Enclosure Warm air is exhausted via side vents Cool air is brought into the unit via fans 2 5 Power Requirements and Earthing Caution This product should be operated only from the type of power source indicated on the marking label If you are not sure of the type of power supply to your business consult a qualified electrical engineer or your local power company...

Page 21: ...OR ELECTRIC SHOCK 2 AS NO MAINS SWITCH IS FITTED TO THIS UNIT ENSURE THE LOCAL AC POWER SUPPLY IS SWITCHED OFF BEFORE CONNECTING THE POWER CABLE 3 THIS UNIT IS NOT FITTED WITH AN ON OFF SWITCH ENSURE THAT THE SOCKET OUTLET IS INSTALLED NEAR THE EQUIPMENT SO THAT IT IS EASILY ACCESSIBLE FAILURE TO ISOLATE THE EQUIPMENT CORRECTLY MAY CAUSE A SAFETY HAZARD To connect the unit to the local AC power su...

Page 22: ...l Earth Connect the SBD75e Demodulator Technical earth to a suitable point WARNINGS 1 THIS UNIT MUST BE CORRECTLY EARTHED THROUGH THE MOULDED PLUG SUPPLIED IF THE LOCAL MAINS SUPPLY DOES NOT HAVE AN EARTH CONDUCTOR DO NOT CONNECT THE UNIT CONTACT CUSTOMER SUPPORT FOR ADVICE 2 BEFORE CONNECTING THE UNIT TO THE SUPPLY CHECK THE SUPPLY REQUIREMENTS IN ANNEX B TECHNICAL SPECIFICATION The unit has a Te...

Page 23: ... Connector RS232 Item Specification Connector type 9 way D type Female Connector designation M C RS232 Standard RS232 Configuration DCE Pin outs 1 Not Used 6 Not Used 2 Tx Data 7 Not Used 3 Rx Data 8 Not Used 4 Not Used 9 5 VDC 100 mA 5 Ground 5 1 6 9 2 6 2 M C Connector 10 100BaseT Ethernet There is one 10 100BaseT Ethernet M C ports which is labelled M C Demod Table 2 5 M C Connector 10 100BaseT...

Page 24: ... 2 6 4 RF L Band Input Connector One or more RF inputs may be provided on the rear panel labelled as Channel 1 Channel 2 etc to receive RF signals from the antenna LNB For signal specification see Appendix A Technical Specification Table 2 7 RF L Band Input Connector Item Specification Connector type F type 75 Ω female socket Connector designation RF Input Channel 1 RF Input Channel 2 Pin outs Cen...

Page 25: ...acquisition range must be correctly configured this is described below The frequency acquisition range is dependant upon symbol rate the use of FFT assistance and use of the frequency sweep As a basic rule without FFT assistance the frequency acquisition range can be assumed to be 2 of symbol rate for QPSK and 1 for 8PSK If Spectral Analysis FFT assistance is enabled then the acquisition range for...

Page 26: ...rating in PRBS Mode the front panel menu shows the real Bit Error Rate measured from errors detected on the PRBS sequence The BER can be reset by via the front panel Note The displayed Bit Error Rate value is invalid when the Demodulator is receiving real data traffic There is also an Estimated BER which is useful when the Demodulator is operating with real data This is displayed on the front pane...

Page 27: ... 2 Configure 3 5 3 3 2 2 1 Profiles 3 5 3 3 2 2 2 Inputs 3 7 3 3 2 2 3 Coding 3 7 List of Tables Table 3 1 Top Level Menu 3 3 Table 3 2 Select Board Menu 3 4 Table 3 3 Status Sub menu 3 4 Table 3 4 Status Status Sub menu 3 4 Table 3 5 Configure Sub menu 3 5 Table 3 6 Profiles Sub menu 3 5 Table 3 7 Inputs Sub menu 3 7 Table 3 8 Coding Types 3 7 Table 3 9 Coding Options 3 8 SBD75e Series Demodulato...

Page 28: ... 4 Status para 5 3 2 1 Est SNR Actual Baud Rate Est Signal Power Demod Freq Prog Baud Rate Prog Bit Rate Actual Bit Rate Spectrum Est EBNO Est BER BERT BER Status para 5 3 2 1 1 FPGA Signal Level AGC Timing Carrier SDF Coding ALL Configure para 5 3 2 2 Profiles para 5 3 2 2 1 Load Profile Create Profile Delete Profile Inputs para 5 3 2 2 2 Input LNB Power LNB Polarization LNB 22KHz Spectrum Alpha ...

Page 29: ...is will report unlocked if any of the cards within the chassis is unlocked Select Board This will list all available cards with the user specified names From this menu these units can be monitored and controlled At present each card has an individual network address which is set within this menu Chassis Info General chassis information which is not specific to a card is displayed here such as Fan ...

Page 30: ...M and there is no conversion factor This will be displayed as 0 Actual Bit Rate This is a calculated bit rate from the actual baud rate In certain S2 modes this will be displayed as 0 when there is no conversion factor Spectrum The Spectrum can be inverted or Normal Est EBNO Estimated EbNo Est BER Estimated BER this is not available in all modes at present BERT BER This is an actual BER when used ...

Page 31: ...e values available for roll off are 0 15 0 20 0 25 0 30 and 0 35 Search Range The Search range can be set from 0 to 20 MHz This should be set depending upon the amount of uncertainty of the carrier Search Step The Step size of the search can be set from 0 to 500 KHz Spectral Analysis The setting of this value will be ON OFF or Auto If enabled then a FFT will be performed to aid acquisition Coding ...

Page 32: ...t is reconfigured To create and save a new profile 1 Select the Create Profile option from the Profiles sub menu The following screen is displayed Name Profile Save Profile Note Until a profile has been named it cannot be saved and will not appear on the menu 2 Select the Name Profile option The following screen is displayed MUX_B Delete ABCDEFGHIJKLMNOPQRSTUVWXYZ Select 3 Use the left and right a...

Page 33: ...therwise it will use 9 75GHz Low Band 3 3 2 2 3 Coding When Coding is selected the coding type is highlighted By using the up and down arrows this coding type can be altered The options are dependant upon the feature keys installed but the possible list is detailed in Table 3 8 Table 3 8 Coding Types Coding Type Remarks Supported Code rates DVBS DVB S 1 2 2 3 3 4 5 6 7 8 DSNG DVB DSNG 2 3 3 4 5 6 ...

Page 34: ...The options are ON or OFF Pilots This entry will only appear when DVBS2S or DVBS2N is selected and not ACM This enables or disables pilot insertion Outer RS This option is only available if Intelsat is selected The options are off no Outer RS 219 RS of 219 201 and 126 RS of 126 112 Diff Decoding This option is only available if Intelsat is selected The options are ON or OFF Equalizer This option i...

Page 35: ...igure This button will activate all the pending options described above When all of the options in Table 5 9 have been set 1 Select Reconfigure The following screen is displayed Reconfigure ENTER Confirm CLEAR cancel 2 Select ENTER The unit is reconfigured with the pending settings this will cause a break in the reception All the pending settings are then stored and will be re used if a power cycl...

Page 36: ...Front Panel Monitoring Control 3 10 SBD75e Series Demodulator Installation and Operation Manual ...

Page 37: ...ormation Icons 4 15 4 7 3 1 Spectrum Analyzer 4 15 4 7 3 1 1 Averaging ON Off Button 4 16 4 7 3 1 2 Cursors 4 16 4 7 3 2 Signal Constellation 4 16 4 7 3 2 1 Number of Points 4 17 4 7 3 2 2 Persistence 4 17 4 7 3 3 Equaliser Frequency Domain Response 4 17 4 7 3 4 Physical Layer Statistics 4 18 4 7 3 4 1 Interpretation 4 19 4 7 3 5 Baseband Header Statistics 4 19 4 7 3 5 1 ID 4 19 4 7 3 5 2 Age 4 19...

Page 38: ...13 Spectrum Analyzer Window 4 16 Figure 4 14 Signal Constellation Window 4 17 Figure 4 15 Equalizer Frequency Domain Response Window 4 18 Figure 4 16 Physical Layer Statistics Window 4 18 Figure 4 17 Baseband Header Statistics Window 4 19 Figure 4 18 Output Interface Statistics Window 4 21 Figure 4 19 BISS Window 4 23 Figure 4 20 BISS Mode Selection Window 4 24 Figure 4 21 Odd Even E Selected 4 25...

Page 39: ...sion 2 0 Opera Version 9 0 4 2 1 Accessing the GUI To access the GUI 1 Enter the IP address or name of the SBR to be controlled in the browser address bar Note The web server of the SBD75e can be found at the default address http port followed by the port number i e port 80 The following window is displayed Figure 4 1 SBD75e Login Window 2 Enter the default Username sbr 75 and the default Password...

Page 40: ...b from the entry level screen monitor bar A window similar to that shown in Figure 4 2 is displayed In this example the single SBD75e is indicating a locked alarm and is loaded with software version V0 1 3 Figure 4 2 Entry Level Window showing Information for one SBD75e 4 3 2 Overview Alarms The alarm status of the unit displayed in Figure 4 2 may be viewed by selecting the Alarms tab A window sim...

Page 41: ...for this property and that Board Temp alarm and warning monitoring are also satisfactory An example is given below to illustrate the process of applying monitoring to other properties on the window To apply Fan too fast monitoring to fan number 2 1 Check the Alarm and Warning boxes in the appropriate row of the window shown above 2 Check the Monitor Fan 2 box 3 Select the Update Monitor tab on the...

Page 42: ...hown by the yellow cross The Overview tab in the monitor bar on the left of the main panel now reflects this new warning state shown by a yellow cross and a yellow fan symbol 4 3 3 Overview Status The summary status information for installed functional units may be viewed by selecting the status tab from the Alarm and Monitoring window A window similar to that shown in Figure 4 5 is displayed 4 6 ...

Page 43: ...tional unit 4 4 1 Information By selecting the SBD75e tab from the monitor bar on the left hand side of the main panel the user is able to set the name of the unit check the software version and available optional features or capture a system snapshot When the tab is selected a window similar to that shown in Figure 4 6 is displayed SBD75e Series Demodulator Installation and Operation Manual 4 7 ...

Page 44: ...The new name should appear in the monitor bar on the left hand side of the main panel as shown in the example in Figure 4 7 Figure 4 7 Setting the Unit Name Window 4 4 1 2 Version The relevant software version number is shown in this window 4 4 1 3 MAC Address The external MAC address of the Ethernet Interface of the SBD75e is displayed below the version number in standard 6 octet format 4 8 SBD75...

Page 45: ... many detailed aspects of the demodulator performance DVB s If the text DVB S is displayed this indicates that the SBD75e is able to operate in DVB S mode DVB S QPSK 8PSK If the text DVB S QPSK 8PSK is displayed this indicates that the SBD75e is able to operate in this mode BISS Basic Interoperable Scrambling System If the text BISS is displayed this indicates that the SBD75e is able to operated i...

Page 46: ...nings based on the behaviour and status of the demodulator Warnings are displayed to the user while alarms initiate the alarm relay Alarms or warnings may be viewed by selecting the Alarms tab on the window shown above A window similar to that shown in Figure 4 9 is displayed 4 10 SBD75e Series Demodulator Installation and Operation Manual ...

Page 47: ... warning to be raised if one or more of the FPGA devices in the demodulator fails to configure correctly 4 6 1 4 SRAM2 Failure Allows an alarm or warning to be raised if one of the SRAM devices on the demodulator board fails to program correctly 4 6 1 5 Board Temperature Allows an alarm or warning to be raised if the temperature of the demodulator board exceeds the user specified temperature limit...

Page 48: ... not operating correctly 4 6 2 2 Output N ISI is Not Present This event allows an alarm or warning to be raised if the Input Stream Identifier ISI associated with the Nth output interface has not been observed in the preceding user specified interval 4 6 2 3 Output N ESR Level This event allows an alarm or warning to be raised if the Errored Second Rate ESR associated with the Nth output interface...

Page 49: ...ocks received during all Severely Errored Seconds are excluded from this calculation 4 6 3 Setting Alarms To set an alarm 1 Check the Alarm Monitoring box next to the property on which you wish to generate an alarm 2 Change the default alarm threshold if required The units of the threshold are displayed to the right of the text entry box Note Some alarms have no user threshold 3 Repeat steps 2 and...

Page 50: ...will be displayed showing an input signal spectrum in a single window Note In the example shown there is no input signal and the user has configured a BER alarm and a Lock warning Figure 4 11 Analyzer Window 4 7 1 Play Pause To the right of the display pane is a Pause symbol Clicking on this symbol will freeze the display in the analyser pane although other signal statistics such as symbol rate fr...

Page 51: ...row icon highlighted in blue Figure 4 12 Analyzer Pane Displayed as three Sub Panes To change the configuration of the analyzer 1 Select the analyzer sub pane you wish to reconfigure It should now be highlighted with a blue border 2 Select the icon representing the type of information you wish to display in the current analyser sub pane If the analyser is not paused then the new display selection ...

Page 52: ... signal The symbol rate is 27 Mbaud and the red and green cursors have been positioned symmetrically either side of the local oscillator spaced by the symbol rate The absolute frequencies of the red and green cursor positions are displayed in the bottom left hand corner of the spectrum pane The frequency spacing between the cursors in kHz and the amplitude difference between the cursors in dB are ...

Page 53: ...tellation 4 7 3 2 2 Persistence If the persistence box is checked successive constellation images are superimposed upon each other 4 7 3 3 Equaliser Frequency Domain Response To select the Equaliser Frequency Domain Response function 1 Select the fourth icon in the row of seven A window similar to that displayed in Figure 4 15 is displayed with the selected icon highlighted in blue Notes 1 The equ...

Page 54: ...he physical layer statistics function may be selected by clicking on the fifth icon in the row of seven A window similar to that displayed in Figure 4 16 is displayed with the selected icon highlighted in blue Figure 4 16 Physical Layer Statistics Window 4 18 SBD75e Series Demodulator Installation and Operation Manual ...

Page 55: ...ge this analysis to compute the percentage frequencies in terms of PL frames or payload bits 4 7 3 5 Baseband Header Statistics The baseband header statistics function may be selected by clicking on the sixth icon in the row of seven A window similar to that displayed in Figure 4 18 is displayed with the selected icon highlighted in blue Figure 4 17 Baseband Header Statistics Window The base band ...

Page 56: ...Modulation 0 ACM VCM 1 CCM 3 ISSYI Input Stream Synchronisation Indicator 0 ISSY field absent 1 ISSY field present 2 NPD Null packet deletion 0 Inactive 1 Active 1 0 RO Transmission roll off factor 00 0 35 01 0 25 10 0 20 11 Reserved 4 7 3 5 6 Modcod The modulation type and coding rate being used corresponding to a particular ISI In the case of ACM this may change dynamically 4 7 3 5 7 Sort By The...

Page 57: ...nterfaces is represented by a separate sub table entitled Output 0 Output 1 and Output 2 If an interface is disabled see then the relevant table is greyed out 4 7 3 6 1 ISI The title row of each sub table indicates the ISI currently bound to that output see 4 7 3 6 2 Full Empty ISSY and Lock Flags These four flags are normally green to indicate healthy operation of the output interface If any or a...

Page 58: ...on The key is entered into both the encoder and decoder this key then forms part of the encryption of the digital TV signal and only receivers with the correct key will decrypt the signal The rapid increase in the use of Digital Satellite News Gathering DSNG technology resulted in the availability of digital codec equipment from a number of vendors At the same time the absence of standard methods ...

Page 59: ...election The options for the BISS mode are Off Mode 0 Mode 1 Mode E Odd Even 1 Odd Even E User 1 and User E Depending upon the selection the available options will change within this section of the window SBD75e Series Demodulator Installation and Operation Manual 4 23 ...

Page 60: ... the GUI 4 8 2 Off BISS is fully disabled and the transport stream will be unmodified If BISS is subsequently enabled then the modification in the transport stream may cause a momentary glitch in the video It is preferable to use BISS 0 which will modify the transport stream without decrypting the video 4 8 3 BISS 0 The transport stream will not decrypt in this mode but is modified to remove signa...

Page 61: ...have similar variants Each MPEG packet has a field in the header which indicates if it is in the clear encrypted using an ODD key or encrypted using an even key While BISS only uses the one key this mode allows two independent keys The advantage of this mode is that it allows keys to be programmed offline while using the other key for decryption Both the odd and the even session word will require ...

Page 62: ... Status Property Status Description State Uninitialized Error condition BISS failure Idle illegal in this mode BISS cannot be used in this mode Idle BISS is turned off Configured BISS is active this will include BISS 0 Mode Extraction Active SI extraction is active Inactive no SI extraction Keys OK Valid keys present this should always be OK stream info PAT not found The PAT is not detected critic...

Page 63: ...cted ID field Clicking on the Generate ESW Key will produce a 16 digit hex value Note This process requires a random seed which will produce a different ESW every time it is generated It is not deterministic No keys are stored in this process Figure 4 22 Encrypted Word Session Generator Window 4 9 SBD75e Configuration 4 9 1 Main The Configuration Main window allows the user to set the conventional...

Page 64: ...signed to improve the tolerance of the receiver to un correctable transmission errors in certain circumstances Stream isolation consists of two principal components MODCOD filter ISI Assignment The status of the stream isolation function may be viewed by selecting the Stream Isolation tab from the Configuration Main window A window similar to that shown in Figure 4 24 is displayed Note By default ...

Page 65: ...5 is displayed Notes 1 When configured for operation in automatic mode the table becomes coloured instead of grey as it is when in manual mode 2 Changes to the modulation and coding parameter of an output interface will have an effect on the configuration of the stream isolation function See These changes will be reflected graphically in the table of modulation and code rates SBD75e Series Demodul...

Page 66: ...rough the MODCOD filter to the output interface 4 9 2 2 ISI Assignment Function Deactivated The configuration of the ISI Assignment function may be viewed by opening the Current View drop down box and selecting Assign ISI A window similar to that shown in Figure 4 26 is displayed In this example no ISI assignment has been activated because there are no constraints on the delivery of the stream wit...

Page 67: ... in which output interfaces Output 0 and Output1 have been enabled Both output interfaces have been configured to use specific modulation and coding 16APSK rate 2 3 in the case of Output 0 and QPSK 8 9 in the case of Output 1 Figure 4 27 Stream Isolation Output 0 Enabled SBD75e Series Demodulator Installation and Operation Manual 4 31 ...

Page 68: ...APSK rate 2 3 PL frames will be associated with an ISI of 1 The received ISI values will be ignored 4 9 2 3 Manual Mode Relying on automatic configuration makes the stream isolation function easier to use but there are circumstances which may require more advanced tactics For example one stream may be borne by a discrete subset of MODCOD values using an adaptive scheme For situations such as this ...

Page 69: ...rough to the output interfaces 2 Use check boxes above each column and to the left of each row to activate the filter for specific modulation types or code rates Alternatively check individual combinations to toggle the state of the filter between Not filtered and filtered In the example shown in Figure 4 30 the user has allowed only QPSK MODCODs from rate 3 5 to rate 8 9 inclusive Base band frame...

Page 70: ...n may be viewed by opening the Current View drop down box and selecting Assign ISI A window similar to that shown in Figure 4 31 is displayed In this example the ISI assignment is activated as the Activate box is checked and the table appears coloured instead of grey as it was when the feature was inactive 4 34 SBD75e Series Demodulator Installation and Operation Manual ...

Page 71: ...2 the user has configured one stream ISI 1 to occupy a range of QPSK MODCODs from rate 3 5 to 8 9 inclusive A second stream ISI 2 is only expected in base band frames transmitted using the 16APSK rate 3 4 MODCOD Notes 1 All base band frames transmitted using 16APSK rate 3 4 will be treated as belonging to stream ISI 2 2 The QPSK code rates from 3 5 to 8 9 can only be used to transmit stream ISI 1 ...

Page 72: ...dvanced tab from the Configuration Main window A window similar to that shown in Figure 4 33 is displayed Note Users should be aware that the controls on the Advanced panel must be used with extreme caution as they can have quite deleterious effects except under certain very specific circumstances 4 36 SBD75e Series Demodulator Installation and Operation Manual ...

Page 73: ...ding support control applies to all streams 4 9 3 2 VCM Guard Mode The DVB S2 specification makes allowance for the concentration of multiple base band streams to be transmitted using a variety of modulation and coding modes Unfortunately the robustness of the stream concentration mechanism is very low when subjected to un correctable transmission errors By default VCM guard mode is disabled In th...

Page 74: ... of the seed employed at the corresponding modulator 4 9 4 Profiles This option allows the user to save and recall a variety of operational profiles and exchange profiles between different chassis via a host computer This facility may be used by selecting the Profiles tab from the main configuration window A window similar to that shown in Figure 4 34 is displayed Figure 4 34 Profiles Main Window ...

Page 75: ...w profile name e g MuxA in the adjacent text box 3 Select Save 4 9 4 2 Loading Existing Profiles To load an existing named profile 1 Select the profile to be loaded from the main Profiles window A window similar to that shown in Figure 4 36 is displayed 2 Select Load 3 Select Configure to activate the profile SBD75e Series Demodulator Installation and Operation Manual 4 39 ...

Page 76: ...ccasionally it is necessary to clone a profile or a set of profiles amongst a family of units To clone a profile 1 Select the profile to be cloned from the profiles main window A window similar to that shown in Figure 4 37 is displayed 4 40 SBD75e Series Demodulator Installation and Operation Manual ...

Page 77: ...a Profile 2 Select the Download link A window similar to that shown in Figure 4 38 is displayed Figure 4 38 Downloaded Profiles List 3 Select all displayed files and save to a network file SBD75e Series Demodulator Installation and Operation Manual 4 41 ...

Page 78: ...view the configuration information for a particular output interface 1 Select the relevant output interface The configuration details are displayed 2 Change any parameters as required 3 Select the configure button to activate the changes 4 9 5 1 Enable Disable Each interface may be independently enabled or disabled using the check box At present the ASI output data will continue to flow in the dis...

Page 79: ...ts Integration time which may be set independently for each output interface The integration period defaults to 60 seconds 4 9 5 5 Modulation and Coding This control parameter is only displayed if the user has engaged automatic stream isolation see paragraph 4 8 2 1 In this case the output panel is displayed similarly to that shown in Figure 4 41 Figure 4 41 Modulation and Coding Control The defau...

Page 80: ...be programmed to a specific Modulation and Coding value in order for stream isolation to be effective 4 9 5 6 DVB S De concentration In DVB S there is a method of de concentrating multiple transport streams In total two individual transport streams can de multiplexed from a bundle of 31 To enable this mode select Deconcentrate Figure 4 43 De Concentration control For each output 0 1 2 A valid Stre...

Page 81: ...cification List of Contents A 1 Introduction A 2 A 2 Technical Specification A 2 A 3 Standards Compliance A 4 List of Tables Table A 1 Technical Specification A 2 SBD75e Series Demodulator Installation and Operation Manual A 1 ...

Page 82: ...d 8 9 DVB DSNG 16QAM 3 4 and 7 8 DVB S2 SHORT Block QPSK 8PSK 16APSK DVB S2 NORMAL Block QPSK 8PSK 16APSK Output 8 bits data and clock LVCMOS compatible level via the DIN 41612 96 pin HARTING Type 0903 196 6951 Female Edge Connector Clock also available as LVDS DVB ASI Electrical Output via BNC connector Input L Band down converter integral to the Card 2 x 75Ω F Type InputsLNB Control 22 4 KHz ton...

Page 83: ...n Specification Power Supply 5V dc via 96 pin HARTING Type 0903 196 6951 Female Edge Connector 3 5Amps Max when not supplying LNB Power 5 8Amps Max when supplying LNB Power SBD75e Series Demodulator Installation and Operation Manual A 3 ...

Page 84: ... Collision Detection CSMA CD Access Method and Physical Layer Specifications HSSI Design Specification written by John T Chapman and Mitri Halabi Revision 2 11 dated March 16 1990 and Addendum Issue 1 dated January 23 1991 DVB DSNG ETSI Standards EN310 210 v1 1 1 Digital Video Broadcasting DVB Framing structure channel coding and modulation for Digital Satellite News Gathering DSNG and other contr...

Page 85: ...Technical Specification SBD75e Series Demodulator Installation and Operation Manual A 5 ...

Page 86: ...APPENDIX B Glossary List of Contents B 1 Introduction B 2 B 2 Abbreviations and Technical Terms B 2 List of Tables Table B 1 Glossary B 2 SBD75e Series Demodulator Installation and Operation Manual B 1 ...

Page 87: ...ate of transfer of digital data when the data comprises information symbols that may consist of a number of possible states Equivalent to bit rate when the symbols only have two states 1 and 0 Measured in Baud BDC Block Down Converter A component of a dish antenna that downconverts the output of a LNA to a suitable frequency to communicate to an Receiver Demodulator or IRD typically L BAND 950 MHz...

Page 88: ... based on the data bits in a block of data This number is then added to the block of data as check bits and transmitted across the link The receiver uses the check bits and the same algorithm to check the accuracy of the received data by comparing the results of the algorithm and the data received If a mismatch occurs an error in transmission is presumed dB Decibels A ratio of one quantity to anot...

Page 89: ...on of equipment used by the RS 232 standard and others to identify equipment types and their communications interface requirements A communications device that originates is the source or is the end receiving unit destination of signals on a network It is typically a terminal or computer DTH Direct To Home The term used to describe uninterrupted transmission from the satellite directly to the subs...

Page 90: ...Communications Commission A US government agency established by the Communications Act of 1934 and is responsible for regulating all non Federal Government use of the radio spectrum including radio and television broadcasting and all interstate telecommunications wire satellite and cable as well as all international communications that originate or terminate in the United States FDM Frequency Divi...

Page 91: ...P adds its own header to it and delivers a datagram to the layer 2 data link protocol It may also break the packet into fragments to support the Maximum Transmission Transfer Unit MTU of the network IRD Integrated Receiver Decoder The Receiver with an internal MPEG Decoder which is connected to the subscriber s TV The IRD is responsible for receiving and de multiplexing all signals The unit receiv...

Page 92: ...gh the medium free space cable waveguide fiber etc to the receiver in a telecommunication system It accounts for the attenuation of the transmitted signal due to propagation as well as the antenna gains feedline and miscellaneous losses Randomly varying channel gains such as fading are taken into account by adding some margin depending on the anticipated severity of its effects The amount of margi...

Page 93: ...for delivery to a Modulator Mux Multiplexer Transmission Multiplexer receives EMMs from the ACC ECMs from the BCC video audio data from the encoders and the SI stream from the SIC It then multiplexes them all into a single DVB compliant transport stream and delivers the signal to the uplink after modulation The Multiplexer also contains the cypher card which scrambles the services according to the...

Page 94: ...t data stream An MPEG 2 DVB standard PLL Phase Locked Loop A phase locked loop is a control system which controls the rotation of an object by comparing its rotational position phase with another rotating object as in the case of a sine wave or other repeating signal This type of control system can synchronise not only the speed but also the angular position of two waveforms that are not derived f...

Page 95: ...reception of the information in clear form SDI Serial Digital Interface SELV Safety Extra Low Voltage EN 60950 STB Set Top Box A box that sits on top of a television set and is the interface between the home television and the cable TV company New technologies evolving for set top boxes are video on demand video games educational services database searches and home shopping The cable equivalent of...

Page 96: ... basis of the ETSI Digital Video Broadcasting DVB standards TX Transmit or Transmitter U 44 45 mm rack height standard Upconverter A unit containing the electronic circuitry necessary to transform the carrier frequency of a broadcast transport stream from a low intermediate frequency to a high radio frequency suitable for long distance transmission Uplink The part of the communications satellite c...

Page 97: ...Glossary B 12 SBD75e Series Demodulator Installation and Operation Manual ...

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