studeni 19, 2017 7:59 am
Početna / Zemaljska TV / MultiTastic je inovativni višekanalni odašiljač

MultiTastic je inovativni višekanalni odašiljač

MultiTastic je inovativni višekanalni odašiljač koji uvodi koncept “Cast-sharing”.

U današnjem emitiranom ekosustavu i scenariju, glavne emitere, mrežni operatori ili čak općine rade ne samo jedan nego i nekoliko DTV kanala. No, kada je riječ o ulaganju u mrežnu infrastrukturu (CAPEX) ili buduće operacije takve mreže (OPEX), račun može postati vrlo skup, a investicija je gotovo nemoguće prevladati kada je potrebna visoka penetracija DTV-a.
U jednom 4U 19 “racku, MultiTastic kombinira do 7 + 1 (ili 6 + 2) modula odašiljača (DVB-T / H / T2, ISDB-Tb, ATSC, DAB / DAB + / T-DMB) Opremljen različitim ulaznim sučeljima (satelitski prijemnik, ASI, ETI, EDI, Gigabit Ethernet ili RF).

Implementiran je pametan sustav unutarnje matrice, tako da rezervni modul odašiljača automatski preuzima vodstvo u slučaju da jedan ne uspije, osiguravajući potpunu redundantnu upravljivost sustavu. Sustav RF pojačanja može biti nezavisan po svakom odašiljaču ili također zajednički, s redundantnim konačnim pojačalom (Multitastic C2) u slučaju susjednih kanala. Ugrađeni satelitski višestruki prekidač, dvostruki redundantni prijamnici brzine s promjenjivim GPS / GLONASS i napajanje osiguravaju rad sustava u svakoj situaciji.

Umjesto ulaganja u više zasebnih jedinica odašiljača, kao i složenih i skupih sustava upravljanja zalihostima, emiteri ili mrežni operatori sada mogu jednostavno ulagati u jedan 4U 19 “rack MultiTastic odašiljač i raditi do 7 kanala u jednoj kompaktnoj kutiji .

Kompaktni 4U 19 “stalak s nosačima
Do 7 + 1 odašiljačkih modula
Izlazna snaga: 15 W po modulu ili 100 W ukupno (Multitastic C2 – susjedni kanali)
Zajednička verzija pojačavanja (za susjedne kanale) ne zahtijeva vanjski spojnik
Redundantno i hot-pluggable RF pojačalo u verzijama C2
Nekoliko ulaznih sučelja za svaki modul odašiljača:
1 x ASI ulaz (TS, BTS, T2MI, SMPTE-310M, ETI)
1 x GbE priključak (TS preko IP ili EDI)
Izborno: 1 x DVB-S / S2 ulaz satelitskih prijemnika (uključujući CAM sučelje i višestruke mogućnosti)
Neobavezno: 1 x ulaz RF prijemnika za konfiguraciju repeater / gap-filler
DVB-T / H / T2, ISDB-T / Tb, DAB / DAB + / T-DMB, ATSC modulacije u potpunosti podržane
Ugrađeni ASI i RF Matrix za redundantno upravljanje svakim modulom odašiljača
Ugrađeni Re-Multiplexer / Layer Combiner / TS na BTS (188 do 204 bajta) pretvarač za ISDB-Tb
Adaptivni pre-korekcijski sklopovi
2 x hot-swappable visoke stabilnosti GPS / GLONASS prijemnika s baterijom
2 x vruće zamjenjive napajanje
SNMP, web sučelje i zaslon osjetljiv na dodir

Configuration

Number of TX slots: 8 hot-swappable
Protection: N+1, N+2, N+1+M+1

Transmitters

Output power: 15 W rms per channel (up to 7 channels) @ MER > 36 dB (C1 version)
100 W rms total in common amplification mode (C2 version)
Frequency agility: UHF Band IV and V or VHF Band III
Frequency resolution: 1 Hz
Pre-correction: Adaptive
RF Connector: N (f), 50 Ohm

Modulator DVB-T/-H/-T2

Standard: EN300744, EN302304, EN302755 V1.3.1 (DVB-T2-Lite), TS101191, TS102773 (T2-MI), TS102034
Inputs: ASI BNC (f), 75 Ohm and RJ45 TS oIP 10/100/1000.
Hierarchical and not hierarchical (DVB-T, using TS oIP input)
FFT: 1K (DVB-T2), 2K, 4K, 8K, 8K ext. (DVB-T2), 16K & 16K ext. (DVB-T2), 32K & 32K ext. (DVB-T2)
Code rate: All modes available according to the standard
Block Short or Normal (DVB-T2)
DVB-T: Reed-Solomon (204, 188)
DVB-T2: BCH, LDPC
Guard interval: 1/32, 1/16, 1/8, 1/4, 19/256 (DVB-T2), 19/128 (DVB-T2), 1/128 (DVB-T2)
Constellation: QPSK, 16QAM, 64QAM, 256QAM (DVB-T2). Rotated and non rotated (DVB-T2)
MISO processing: Supported

ISDB-Tb

Standard: ABNT NBR 15601, ABNT NBR 15603
Inputs: ASI TS/BTS BNC (f), 75 Ohm and RJ45 TS/BTS oIP 10/100/1000.
FFT: Mode 1 (2K), Mode 2 (4K), Mode 3 (8K)
Code rate: 1/2, 2/3, 3/4, 5/6, 7/8
Guard interval: 1/4, 1/8, 1/16, 1/32
Hierarchical modulation: Up to 3 layers
Constellation: QPSK, 16QAM, 64QAM
Time interleaver: Fully supported
Partial reception: Supported

DAB/DAB+/T-DMB

Standard: EN 300401, ETS 300 799
Inputs: ETI (NI[G703], NA5376[G704] or NA5592[G704]) BNC (f), 75 Ohm
EDI (ETSI TS 102 693) RJ45 10/100/1000
Transmission modes: Mode I, II, III, IV (Automatically detected from the ETI stream, or user selectable)
Operation: MFN or SFN operations

ATSC

Standard: A/53, A/110
Inputs: ASI / SMPTE-310M BNC (f), 75 Ohm and RJ45 TS oIP 10/100/1000
Modulation: 8-VSB
Input bit rate: 19.39 Mbit/s
Bandwidth: 6 MHz
Max processing delay: Up to 1 second (programmable)

Analogue

Standard: B, G, D, K, M, N, I
Inputs: Video BNC (f), 75 Ohm, audio Tini-QG “Mini XLR”, 6 Pin (m), 600 Ohm
Color system: PAL, NTSC

Satellite Receiver

Standard: ETSI EN 300 421 (QPSK) (DVB-S)
ETSI EN 302 307 (QPSK, 8PSK, 16APSK) (DVB-S2)
ETSI EN 50083-9 (ASI)
ETSI EN 50221 (Common Interface)
DVB-S2: VCM, CCM, Multi Stream and Single Stream, Normal & Short FEC frames
Symbol rate: 1 – 45 Msymb/s (DVB-S)
2 – 45 Msymb/s (DVB-S2)
Constellation: QPSK, 8PSK, 16APSK
FEC: Automatic, all modalities available according to the standard.
Block Short or Normal
DVB-S: Reed-Solomon (204,188)
DVB-S2: BCH, LDPC
Roll–Off: 0.2, 0.25, 0.35
Input connector: F (f), 75 Ohm
Frequency: L–band 930÷2250 MHz
LNB control voltage: Off, +13/18 Vdc, 22 kHz, 0.25 A (overload protection)
RF input level: 40 ÷ 100 db/μV (with attenuator)
Output connector: BNC (f), 75 Ohm
Modality: 188 bytes
Max input bit rate: 80 Mbps (CAM limit: 72 Mbps)
CAM interface: PCMCIA DVB-CI Common Interface
CA mode (Conditional Access): Multicrypt, Simulcrypt
CAS Support: Mediaguard, Viaccess, Irdeto, Conax, BISS with Professional multiprogram CAM (descrambling of up to 24 Elementary Streams) Betacrypt, Cryptoworks, Nagravision with standard consumer CAM (descrambling of up to 4 services)

Repeater/Gap Filler

RF Input

Signal type: One DTV channel (DVB-T/H/T2, ISDB-T/Tb, ATSC)
Frequency range: 170 ÷ 862 MHz (continuous tuning)
Sensitivity: -75 ÷ -15 dBm
Selectivity : > 60 dB ± 4.2 MHz
NF (Pi = -50 dBm): < 6 dB
Conversion type: Direct Base Band Conversion (Zero IF)
Return losses: > 15 dB
Connector: N (f), 50 Ohm

Echo Canceller

Cancellation level: 40 dB, typical
Cancellation window: 20 μs
Selective cancellation window: 1.6 μs (time shift from 2 to 820 μs)
Doppler cancellation: yes
Maximum echo/signal ratio: +15 dB (over the main signal), typical
Total delay: < 10 μs

GPS / GLONASS

Input connector: N (f), 50 Ohm
Input/Monitor output 10 MHz: BNC (f), 75 Ohm
Input/Monitor output 1 PPS: BNC (f), 75 Ohm
Phase noise: -140 dBc/Hz @ 10 kHz
-150 dBc/Hz @ 100 kHz
Stability: 1e-12 / 24 H with disciplined OCXO
Hold-over stability: 5 μs after 5 hours (optional 1 μs after 24 hours)

Mechanical

Chassis: 4U rack 19”
Width: 482 mm
Height: 177 mm
Depth: 420 mm without fans
Weight: 25 Kg

Controls

TFT touchscreen
Web GUI
SNMP
GPIO

Environmental

Operating temperature range: -5°C ÷ 40°C
Max. relative humidity: 90%, non condensing
Max. operating altitude: 2500 m. a.s.l. (>2500 m. optional)

Electrical

Power supply: Single Phase 100÷240 V∼ 50/60 Hz, IEC320 C14 Plug
Double redundant power supply: Hot-swappable (optional)
Maximum consumption: 750 W with 8 slots at maximum power

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