UHP UHP-1200 Installation Manual
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UHP-1200 OUTDOOR SATELLITE ROUTERGENERAL DESCRIPTION AND INSTALLATION GUIDE, v3.2© UHP Networks Inc. 2015 4 www.uhp.netACRONYMS AND ABBREVIATIONS16APSK 16 Amplitude and Phase-shift keying or Asymmetric Phase-shift keying, (APSK), is a digital modulation scheme thatconveys data by changing, or modulating, both the amplitude and the phase of a reference signal (the carrier wave).32APSK 32 Amplitude and Phase-shift keying or Asymmetric Phase-shift keying, (APSK), is a digital modulation scheme thatconveys data by changing, or modulating, both the amplitude and the phase of a reference signal (the carrier wave).8PSK Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing, or modulating, the phase of areference signal (the carrier wave).AGC Automatic Gain ControlBCH BCH code is a multilevel cyclic variable-length digital error-correcting code used for correcting multiple random errorpatterns. BCH codes may also be used with multilevel phase-shift keying whenever the number of levels is a primenumber or a power of a prime number.BUC Block Up-Converter (BUC) is used in the transmission (uplink) of satellite signals. It converts a band (or "block") offrequencies from a lower frequency to a higher frequency.C/N Carrier-to-noise ratio, often written as CNR or C/N, is the signal-to-noise ratio (SNR) of a modulated signal.CRTP Compressing IP/UDP/RTP Headers for Low-Speed Serial LinksDAMA Demand Assigned Multiple Access. Channel establishment on demand.DSCP Differentiated Services Code Point (DSCP) is a 6-bit field in the header of IP packets for packet classification purposes.DSCP replaces the outdated IP precedence, a 3-bit field in the Type of Service byte of the IP header originally used toclassify and prioritize types of trafficDVB Digital Video Broadcasting (DVB) is a suite of internationally accepted open standards for digital television.Eb/No Eb/N0 (the energy per bit to noise power spectral density ratio) is an important parameter in digital communication ordata transmission. It is a normalized signal-to-noise ratio (SNR) measure, also known as the "SNR per bit". It is especiallyuseful when comparing the bit error rate (BER) performance of different digital modulation schemes without takingbandwidth into account.EIRP Effective Isotropically Radiated PowerETSI The European Telecommunications Standards Institute (ETSI) is an independent, non-profit, standardizationorganization in the telecommunications industry (equipment makers and network operators) in Europe, with worldwideprojection.FEC In telecommunication and information theory, forward error correction (FEC) is a system of error control for datatransmission, whereby the sender adds redundant data to its messages, also known as an error-correction code.Frame TDMA service packet describing which station should transmit in which time slot . Generated ~10 times per second.Hard priority Method of transmission queues handling when packets from lower priority queue are not transmitted until all packetsfrom higher priority queue are transmitted.HTTP Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermediainformation systems.HUB Central Station of satellite network that is managing all the terminals and resourcesHubless Special mode of operation when all stations are transmitting to one TDMA carrier and all receiving this carrier.HW HardwareICMP The Internet Control Message Protocol (ICMP) is used by networked devices to send error messages—indicating, forinstance, that a requested service is not available or that a host or router could not be reached.IESS Intelsat Earth Station StandardsIFL Connection from the indoor equipment (modem/router) to the outdoor equipment at the antenna normally involvestwo inter-facility (IFL) cables.IGMP The Internet Group Management Protocol (IGMP) is a communications protocol used by hosts and adjacent routers onIP networks to establish multicast group memberships.Inroute Channel from stations to hub.IP IP is the usual abbreviation for Internet Protocol.LDPC Low-density parity-check (LDPC) code is a linear error correcting code, a method of transmitting a message over a noisytransmission channel, and is constructed using a sparse bipartite graph.LNB Low-noise block converter is the receiving converter installed at satellite antenna.Local oscillator Oscillator built into RF block converter ( BUC or LNB ). Value of LO is usually written on block enclosure or in datasheet.Long frames DVB-S2 frames 64800 bits long (including FEC). Require slightly lower C/N than short frames.Master Main station of Hubless network. Master allocates bandwidth and performs stations acquisition.MCPC Multiple channels per carrier. All TDM carriers generated by UHP can be treated as MCPC. Even if they are called SCPC.Mesh Capability of station allowing to receive other stations via TDMA link.MF-TDMA TDMA working on several RF channels simultaneously. All MF channels work as one aggregate TDMA channel.MODCOD Modulation and coding mode.NMS Network Management SystemNode Station Terminal of satellite network which is able to receive information directly from other network terminalsODU Out-Door UnitOutroute Forward TDM channel (MCPC) from HUB to stations.QPSK Phase-shift keying (PSK) is a digital modulation scheme that conveys data by changing, or modulating, the phase of areference signal (the carrier wave).RF level Absolute RF level of entire signal (carrier + adjacent carriers) expressed in dBm.RSV Reed–Solomon error correction is an error-correcting code that works by oversampling a polynomial constructed fromthe data. |
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