Chapters
Table of Contents
Summary of Contents for Advantech SBD75e Series
- Page 1 SBD75e 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 Preliminary Pages Preface Thank you for purchasing a Demodulator from Advantech AMT. These products build on the success of the SL/QD series, the industry’s first L-band digital satellite modems. Advantech Advanced Microwave Technology is an international company specializing in the development of satellite communication systems.
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Page 3: Copyright Notice
AdvantechAMT, Inc. Customer Support The staff at Advantech AMT is committed to producing the highest quality products and may be contacted for product service, support and assistance at the following locations:... -
Page 4: Warranty And Service
Preliminary Pages Warranty and Service Advantech AMT warrants to the Purchaser that the Products and any Repaired Products (Repairs) will be free from defects in material and workmanship for a period of two years from the date of shipment to the Purchaser. -
Page 5: Safety Notices
VORM ÖFFNEN DES GERÄTES MUSS DER NETZSTECKER VOM STROMNETZ GETRENNT WERDEN. DIESES GERÄT DARF NUR DURCH DAS BEVOLLMÄCHTIGTE KUNDENDIENSTPERSONAL DER FABRIK INSTANDGEHALTEN WERDEN. DIE NICHTBEACHTUNG DIESER VORSCHRIFT KANN ZU FEHLFUNKTIONEN DES GERÄTES FÜHREN UND DAS PERSONAL DURCH STROMSCHLÄGE GEFÄHRDEN. SBD75e Series Demodulator Installation and Operation Manual... -
Page 6: Chapter 1 Getting Started
Appendix A Technical Specification Details the technical specification for the equipment, including performance, signals, power, physical, environmental and standards compliance. Appendix B Glossary Provides a description of the abbreviations ands terms used in this manual. SBD75e Series Demodulator Installation and Operation Manual... -
Page 7: Table Of Contents
Enclosure ..............1-3 1.3.2 Front Panel ..............1-3 1.3.2.1 Vacuum 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 Typical System Setup ..........1-7 SBD75e Series Demodulator Installation and Operation Manual... -
Page 8: Scope Of This Manual
Who Should Use This Manual 1.1.1 This manual is intended for operators/users of the SBD75e series of Network L-Band Satellite Demodulators to assist in the installation, operation, fault-finding and maintenance of the equipment. Throughout this manual, this product is referred to as the ‘SBD75e Demodulator ’. -
Page 9: Summary Of Features
The SBD75e Demodulator is provided with a Vacuum Fluorescent Display (VFD), 7 status LEDs and a 16 button keypad. An RS-232 port is also provided and further details of this connector can be found in Chapter 2, Installation. SBD75e Series Demodulator Installation and Operation Manual... -
Page 10: Vacuum Fluorescent Display (Vfd)
Reserved Transmit Fault Indicates that the modulator is not transmitting due to a fault (or user intervention) Prime Power Green Indicates that the power supply current is being received by the management card SBD75e Series Demodulator Installation and Operation Manual... -
Page 11: Keypad
0 to 9 be entered directly. Note If a parameter is changed and the CLEAR key pressed before ENTER, the parameter change will be cancelled and the display returned to parameter selection mode. SBD75e Series Demodulator Installation and Operation Manual... -
Page 12: Rear Panel
Chapter 2, Installation. AC Power RS232 ASI 1/2/3/4 ALARM Connector Connector Connectors Connector RF INPUT M&C DEMOD ON/OFF CHANNEL 1/2 Connector Switch Connectors Figure 1.5: SBD75e Demodulator Rear Panel SBD75e Series Demodulator Installation and Operation Manual... -
Page 13: Typical System Setup
Getting Started Typical System Setup The 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... - Page 14 Getting Started SBD75e Series Demodulator Installation and Operation Manual...
- Page 15 General ..............2-7 Table 2.7: RF (L-Band) Input Connector ........2-10 2.5.2.3 Protective Earth/Technical Earth ......2-8 Table 2.8: ASI Output Connector ..........2-11 Signal Connections ........... 2-9 2.6.1 M&C Connector - RS232 .......... 2-9 SBD75e Series Demodulator Installation and Operation Manual...
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Page 16: Introduction
Installation Introduction This chapter describes the unpacking, inspection and installation considerations. Advantech AMT personnel normally perform installation of the SBD75e Demodulator. This chapter provides configuration and connection information for planning installations, checking the final set-up in the event of a fault, modifying the requirements or moving the equipment to another location. In the event of problems, contact Customer Support. -
Page 17: Preliminary Checks
Do not place this product on an unstable cart, stand, bracket, or table. The product may fall, causing serious injury and serious damage to the product. Use only with a cart, stand, bracket or table recommended by Advantech AMT An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn. -
Page 18: Inventory
See Table 2.1 for details of the kit required for various rack sizes. Table 2.1: Demodulator Modem Rack Mounting Support Kits Rack Depth 600 mm 19A-230001-001 700 mm 19A-230021-001 800 mm 19A-230011-001 SBD75e Series Demodulator Installation and Operation Manual... -
Page 19: Cable Routing
This product should never be placed near or over a radiator or heat register. This product should not be placed in a built-in installation such as a rack unless proper ventilation is provided or the instructions have been adhered to. SBD75e Series Demodulator Installation and Operation Manual... -
Page 20: Power Requirements And Earthing
Allow at least 50 mm free air-space at each side of the equipment. Units in racks can be stacked without ventilation panels between. Racks containing stacked equipment may need to be forced-air cooled to reduce the operating ambient temperature. For stacking constraints contact Advantech Customer Support. Warm air is exhausted via... -
Page 21: Ac Power And Fuse
The unit is supplied with a detachable mains-supply cable fitted with a moulded plug suitable for the USA, UK or Europe as appropriate. The wires in the mains-supply cable are coloured in accordance with the wire colour code shown in Table 2.2. Table 2.2: Supply Cable Wiring Colours SBD75e Series Demodulator Installation and Operation Manual... -
Page 22: Protective Earth/Technical Earth
Technical earth terminal and a suitable point on the rack. Eliminate the migration of stray charges when connecting between equipment. Figure 2.4: Location of Technical Earth Signal Connections SBD75e Series Demodulator Installation and Operation Manual... -
Page 23: Signal Connections
RJ-45 socket Connector designation: M&C Demod Standard: 10/100BaseT Configuration: Pin-outs: RJ-45 Pin Number Description Wire Color Codes Crossover Cable Pins White W/Orange TX + Orange TX - White W/Green RX + Blue White W/Blue SBD75e Series Demodulator Installation and Operation Manual... -
Page 24: Alarms Connector
2.6.5 One or more ASI outputs may be provided on the rear panel, labelled as ASI 1, ASI 2, etc., to receive transport streams. For signal specification, see Appendix A: Technical Specification. 2-10 SBD75e Series Demodulator Installation and Operation Manual... -
Page 25: Configuring The Demodulator For Best Performance
3MSymbols as this will significantly slow signal acquisition. The command which enables or disables FFT assistance is set to auto by default; in this case the FFT is only enabled when the bit rate is less than 1.5 Mbps. 2-11 SBD75e Series Demodulator Installation and Operation Manual... -
Page 26: Ber Measurement
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 panel menu. 2-12 SBD75e Series Demodulator Installation and Operation Manual... - Page 27 Status ................3-4 Table 3.8: Coding Types ............... 3-7 3.3.2.1.1 Status ................3-4 Table 3.9: Coding Options ............3-8 3.3.2.2 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 SBD75e Series Demodulator Installation and Operation Manual...
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Page 28: Introduction
Descrambler : Pilots : Outer RS : Diff. Decoding : Equalizer : Remove Mark : Unframed ASI : PLS Seed : Output X ISI : Output X Mode : Reconfigure : System Setup > SBD75e Series Demodulator Installation and Operation Manual... -
Page 29: Powering Up The Demodulator
GUI. The Select Board functions may be viewed by clicking on the Select Board option from the Overview screen. The options available from this menu are detailed in Table 3.2. SBD75e Series Demodulator Installation and Operation Manual... -
Page 30: Status
This will report locked or unlocked. Timing: This will report locked or unlocked. Carrier: This will report locked or unlocked. This is the framing and is not relevant in all modes. This will report locked or SDF: unlocked. SBD75e Series Demodulator Installation and Operation Manual... -
Page 31: Configure
Select the Profiles option from the Configure sub-menu. The options displayed are detailed in Table 3.6. Table 3.6: Profiles Sub-menu Menu Item Operations This option will only be displayed if there are stored profiles. Load Profile > SBD75e Series Demodulator Installation and Operation Manual... - Page 32 A total of 30 upper case characters can be entered on the front panel display. When using the GUI, up to 64 upper and lower case characters may be entered. Select the Save option. The following screen is displayed. Saving Profile: MUX_B ENTER = Confirm : CLEAR = Cancel SBD75e Series Demodulator Installation and Operation Manual...
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Page 33: Inputs
9/10] Using the right arrow highlight the required code rate. Using the up and down arrows, select the required code rate. Press ENTER. A list of options, detailed in Table 3.9 is displayed. SBD75e Series Demodulator Installation and Operation Manual... - Page 34 262141 and the value is entered in decimal. The Modulator will have to use the PLS Seed: same seed value to lock otherwise the transmitted modulation and code rate will not be decoded. SBD75e Series Demodulator Installation and Operation Manual...
- Page 35 All the pending settings are then stored and will be re-used if a power cycle occurs. If the unit was not reconfigured then the pending settings are discarded if the unit is power cycled or the user exits out of the CONFIGURE menu. SBD75e Series Demodulator Installation and Operation Manual...
- Page 36 Front Panel Monitoring & Control 3-10 SBD75e Series Demodulator Installation and Operation Manual...
- Page 37 4.8.7 Odd/Even-E .............. 4-25 4.7.1 Play/Pause ............... 4-14 4.8.8 User-1 ................. 4-26 4.7.2 Analyzer Pane format ..........4-15 4.8.9 User-E ................. 4-26 SBD75e Series Demodulator Installation and Operation Manual...
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Page 38: List Of Figures
Figure 4. 43 De-Concentration control ........4-44 List of Tables Table 4.1: Optional Supported Features ........4-9 Table 4.2: MA Type Flags ............4-20 Table 4.3: BISS Status ..............4-26 SBD75e Series Demodulator Installation and Operation Manual... -
Page 39: Introduction
Note If a green tick is displayed in the ‘Overview’ tab of the monitor bar, this indicates that all equipment is working correctly. SBD75e Series Demodulator Installation and Operation Manual... -
Page 40: Overview
Overview: Alarms 4.3.2 The alarm status of the unit displayed in Figure 4.2 may be viewed by selecting the Alarms tab. A window similar to the one shown in Figure 4.3 is displayed. SBD75e Series Demodulator Installation and Operation Manual... - Page 41 Check the Alarm and Warning boxes in the appropriate row of the window shown above. Check the ‘Monitor Fan 2’ box. Select the ‘Update Monitor’ tab on the top right-hand side of the window. A window similar to the one shown in Figure 4.4 is displayed. SBD75e Series Demodulator Installation and Operation Manual...
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Page 42: 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. SBD75e Series Demodulator Installation and Operation Manual... -
Page 43: Sbd75E: Information
When the tab is selected, a window similar to that shown in Figure 4.6 is displayed. SBD75e Series Demodulator Installation and Operation Manual... -
Page 44: Setting The Unit Name
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. SBD75e Series Demodulator Installation and Operation Manual... -
Page 45: Supported Features
A basic summary of the operation of the SBD75e may be viewed by selecting the Status Tab from the window shown in Figure 4.6. A window, similar to that shown in Figure 4.8 is displayed. SBD75e Series Demodulator Installation and Operation Manual... -
Page 46: Sbd75E: Alarms
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: General
4.6.1.6 FPGA Temperature Allows an alarm or warning to be raised if the core temperature of one or more of the FPGA devices exceeds the design limit. 4-11 SBD75e Series Demodulator Installation and Operation Manual... -
Page 48: Dummy Frames Only
ESR is computed is also programmable by the user (See Para 4.9.5.4). An ‘Errored Second’ is defined as an interval of one second in which one or more of the received blocks contain un-correctable errors. 4-12 SBD75e Series Demodulator Installation and Operation Manual... -
Page 49: Output N Sesr Level
A summary of the alarm and warning status is visible at all times in the monitor bar at the left side of the main panel. If no warnings or alarms are active, the summary for the relevant functional unit should appear as a green tick as shown below. 4-13 SBD75e Series Demodulator Installation and Operation Manual... -
Page 50: Sbd75E: Analyzer
SNR will be updated as normal. Once the analyser has been paused, the ‘Pause’ symbol will be replaced by a ‘Play’ symbol. Clicking on this symbol will make the analyser pane live again. 4-14 SBD75e Series Demodulator Installation and Operation Manual... -
Page 51: Analyzer Pane Format
The Spectrum Analyzer function may be opened by selecting the first icon, in the row of seven. A window, similar to that displayed in Figure 4.13 is displayed with the selected icon highlighted in blue. 4-15 SBD75e Series Demodulator Installation and Operation Manual... -
Page 52: Averaging On/Off Button
To select the Signal Constellation function: Select the second icon, in the row of seven. A window, similar to that displayed in Figure 4.14is displayed with the selected icon highlighted in blue. 4-16 SBD75e Series Demodulator Installation and Operation Manual... -
Page 53: Number Of Points
Outside of the region occupied by the wanted signal, the frequency response of the equaliser is indeterminate and will vary in a dynamic fashion. In this window, the extent of the frequency axis is once again equal to twice the symbol rate of the demodulated signal. 4-17 SBD75e Series Demodulator Installation and Operation Manual... -
Page 54: 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... -
Page 55: Interpretation
This is the Input Stream Identifier (ISI). 4.7.3.5.2 The interval since a PL frame, corresponding to a particular ISI, was last received at the demodulator, expressed in seconds (s) or minutes (m). 4-19 SBD75e Series Demodulator Installation and Operation Manual... -
Page 56: User Packet Length (Upl)
Most commonly, spurious streams can appear. Such spurious streams arise through sporadic corruption of the ISI value in the base-band header. Operation of the system under such circumstances may lead to unexpected performance degradation. 4-20 SBD75e Series Demodulator Installation and Operation Manual... -
Page 57: Effects Of Stream Isolation
The ‘Packet Count’ field displays the number of user packets received since the interface was configured. The ‘Error Count’ field displays the number of user packets received with erroneous CRC bytes. The ‘PER’, or Packet Error Rate, is the ratio of the latter metrics. 4-21 SBD75e Series Demodulator Installation and Operation Manual... -
Page 58: Bit Rate
BISS tab. A window similar to the shown in Figure 4.20 is displayed. The BISS window can be split into 3. The top is for selecting the BISS mode, the middle is a status view and the bottom is an application for generating Encrypted Session words. 4-22 SBD75e Series Demodulator Installation and Operation Manual... -
Page 59: Biss Mode Selection
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. 4-23 SBD75e Series Demodulator Installation and Operation Manual... -
Page 60: Off
The transport stream is decrypted using the session word which is a 12 digit hex value. If the key is not present then the last entered value will be used. This session word is independent from the key generated when using BISS-E and will be retained. 4-24 SBD75e Series Demodulator Installation and Operation Manual... -
Page 61: Biss-E
Injected Id. The Injected Id will require a 14 digit hex value and the ESWs will both require 16 digit hex values. The even key is the same key as used for BISS-E. Figure 4.21: Odd/Even-E Selected 4-25 SBD75e Series Demodulator Installation and Operation Manual... -
Page 62: User-E
A PMT cannot be modified to add/remove BISS SI (PIDs listed in the PMT PMT info would not be ciphered/deciphered) Missing PMT(s) A PMT listed in the PAT could not be retrieved All is OK 4-26 SBD75e Series Demodulator Installation and Operation Manual... -
Page 63: Encrypted Session Word Generator
4.9.1 The Configuration Main window allows the user to set the conventional demodulator parameters such as: Carrier frequency and spectrum direction Symbol rate Modulation and FEC modes Carrier acquisition options Equaliser settings 4-27 SBD75e Series Demodulator Installation and Operation Manual... -
Page 64: Stream Isolation
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, the stream isolation feature is set to manual mode and disabled. 4-28 SBD75e Series Demodulator Installation and Operation Manual... -
Page 65: Automatic Mode
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. 4-29 SBD75e Series Demodulator Installation and Operation Manual... -
Page 66: Isi Assignment Function - Deactivated
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 with ISI 1 to the demodulator. 4-30 SBD75e Series Demodulator Installation and Operation Manual... - Page 67 ‘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 4-31 SBD75e Series Demodulator Installation and Operation Manual...
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Page 68: Manual Mode
The mode of operation may be changed to manual by opening the ‘Behaviour’ pull-down menu and selecting ‘manual’. A window, similar to the one shown in Figure 4.29 is displayed. 4-32 SBD75e Series Demodulator Installation and Operation Manual... -
Page 69: Modcod Filter
‘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 frames transmitted on all other MODCODs will be discarded. 4-33 SBD75e Series Demodulator Installation and Operation Manual... -
Page 70: Isi Assignment Function - Activated
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 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. 4-35 SBD75e Series Demodulator Installation and Operation Manual...
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Page 72: Advanced
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: Padding Support
The VCM Guard Mode may be enabled by checking the VCM Guard Mode box on the advanced window. When VCM guard mode is engaged, all received base-band frames containing un-correctable transmission errors are discarded. 4-37 SBD75e Series Demodulator Installation and Operation Manual... -
Page 74: Pls Seed
Select the ‘New Profile’ option from the list shown in Figure 4.34. Enter a profile name (e.g. MuxA) in the adjacent text box. Select ‘Save’. The new profile will appear in the profile list as shown in Figure 4.35. 4-38 SBD75e Series Demodulator Installation and Operation Manual... -
Page 75: Loading Existing Profiles
To load an existing named profile: Select the profile to be loaded from the main Profiles window. A window similar to that shown in Figure 4.36 is displayed. Select ‘Load’. Select ‘Configure’ to activate the profile. 4-39 SBD75e Series Demodulator Installation and Operation Manual... -
Page 76: Downloading A Profile
Occasionally it is necessary to clone a profile, or a set of profiles, amongst a family of units. To clone a profile: 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 Figure 4.37: Downloading a Profile Select the Download link. A window similar to that shown in Figure 4.38 is displayed. Figure 4.38: Downloaded Profiles List Select all displayed files and save to a network file. 4-41 SBD75e Series Demodulator Installation and Operation Manual...
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Page 78: Uploading A Profile
Each output stage may be programmed to process one stream of the received DVB-S2 multiplex. The stream to be processed is determined by the Input Stream Identifier, or ISI, which may be set to a number in the range 0 to 255. 4-42 SBD75e Series Demodulator Installation and Operation Manual... -
Page 79: Output Mode
MODCOD for 16APSK rate 2/3. All frames received on this MODCOD will pass to ‘Output 0’ for processing. Figure 4.42: Configuring Output Interface to Accept All Base-band Data Frames 4-43 SBD75e Series Demodulator Installation and Operation Manual... - Page 80 Output 3 is always a copy of output 0. If all 3 outputs are unique then configuration will fail and this will clearly be stated. This mode is only valid in DVB-S and DVB-DSNG and not in DVB-S2 as it is now part of the standard. 4-44 SBD75e Series Demodulator Installation and Operation Manual...
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Page 81: Technical Specification
Technical Specification APPENDIX A: List of Contents List of Tables Table A.1: Technical Specification ..........A-2 Introduction ............... A-2 Technical Specification ........... A-2 Standards Compliance ..........A-4 SBD75e Series Demodulator Installation and Operation Manual... -
Page 82: Technical Specification
Timing, Carrier, FEC lock, AGC all monitored Control Euro-card standard Height: (mm/in) 16 / 0.59 Physical Width: (mm/in) 100 / 3.94 Length: (mm/in) 220 / 8.6 Environmental Operating Temperature 0 to 45° C. Forced airflow across SBR-75 required. SBD75e Series Demodulator Installation and Operation Manual... - Page 83 Technical Specification Description Specification +5V dc via 96 pin HARTING Type 0903 196 6951 Female Edge Connector Power Supply 3.5Amps Max when not supplying LNB Power 5.8Amps Max when supplying LNB Power SBD75e Series Demodulator Installation and Operation Manual...
- Page 84 Digital Satellite News Gathering (DSNG) and other contribution applications by satellite Intelsat Earth Station Standards (IESS) Documents (IESS 308/309/310/315): “Performance Characteristics for Intermediate Data Rate Digital Carriers using Convolutional Encoder / Viterbi Decoding and QPSK, 8PSK modulations.” SBD75e Series Demodulator Installation and Operation Manual...
- Page 85 Technical Specification SBD75e Series Demodulator Installation and Operation Manual...
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Page 86: List Of Contents
Glossary APPENDIX B: List of Tables List of Contents Table B.1: Glossary ................ B-2 Introduction ............... B-2 Abbreviations and Technical Terms ....... B-2 SBD75e Series Demodulator Installation and Operation Manual... - Page 87 TV signal and only receivers with the correct key will decrypt the signal. Bit-rate The rate of transfer of digital data when the data comprises two logic states, 1 and 0. Measured in bit/s. SBD75e Series Demodulator Installation and Operation Manual...
- Page 88 8x8-pixel block basis, converting the data from an uncompressible X Y form (as displayed by an oscilloscope) to a compressible frequency domain form (as displayed by a spectrum analyser). Can be forward DCT or inverse DCT. SBD75e Series Demodulator Installation and Operation Manual...
- Page 89 MPEG-2 audio/video streams, using QPSK or 8PSK or MAPSK (M-ary amplitude and phase shift keying) modulation with concatenated encoding. DVB SI Digital Video Broadcasting Service Information. DVB-PI DVB-Professional Interfaces: TTV Lan search shows – DVB Physical Interfaces SBD75e Series Demodulator Installation and Operation Manual...
- Page 90 FTP is designed to handle binary files directly and does not add the overhead of encoding and decoding the data. G.703 The ITU-T standard which defines the physical and electrical characteristics of hierarchical digital interfaces. SBD75e Series Demodulator Installation and Operation Manual...
- Page 91 Europe, PRI includes 30 B channels and one D channel, equivalent to an E1 line. International Standards Organisation. ITU-R International Telecommunications Union - Radiocommunications Study Groups (was CCIR). ITU-T International Telecommunications Union - Telecommunications Standardisation Sector (was CCITT). SBD75e Series Demodulator Installation and Operation Manual...
- Page 92 Local Oscillator. LVDS Low Voltage Differential Signal: LVDS is a generic multi-purpose Interface standard for high speed / low power data transmission. It was standardised in ANSI/TIA/EIA-644-1995 Standard (aka RS-644). M&C Monitor and Control. SBD75e Series Demodulator Installation and Operation Manual...
- Page 93 OPPV Order ahead Pay Per View: An advance purchase of encrypted one- time events with an expiry date. SBD75e Series Demodulator Installation and Operation Manual...
- Page 94 Professional Satellite Receiver: See also: IRD. Power Supply Unit. Quadrature Amplitude Modulation: A method of modulating digital signals, which uses combined techniques of phase modulation and amplitude modulation. It is particularly suited to cable networks. SBD75e Series Demodulator Installation and Operation Manual...
- Page 95 It is part of the Transmission Control Protocol/Internet Protocol (TCP/IP) protocol suite. SNMP enables network administrators to manage network performance and resolve network problems. B-10 SBD75e Series Demodulator Installation and Operation Manual...
- Page 96 UPS systems typically provide surge suppression and may provide voltage regulation. Universal Time Co-ordinate: An internationally agreed basis for timekeeping introduced in 1972 and based on international atomic time (corresponds to Greenwich Mean Time or GMT). B-11 SBD75e Series Demodulator Installation and Operation Manual...
- Page 97 Glossary B-12 SBD75e Series Demodulator Installation and Operation Manual...