DVB-S/S2 (8PSK, QPSK) to 8xDVB-T (COFDM) Transmodulator: TERRA TDX-481 (FTA)

Code: R81621

€1046.34

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The 8xDVB-S/S2 (8PSK, QPSK) - 8xDVB-T (COFDM) tdx481 FTA transmodulator allows the conversion of DVB-S/S2 signals from 8 satellite transponders to 8 DVB-T MUXes.

• Conversion of DVB-S/S2 signal from 8 satellite transponders to 8 DVB-T COFDM multiplexes
• FTA free-to-air programmes
• Reception of 8 satellite transponders and conversion to any 8 DVB-T multiplexes
• Channel selection and filtering of unnecessary services in the digital stream
• Compatible with dSCR/Unicable multiswitch series
• Control via RJ-45 port, which greatly simplifies the installation procedure
• Internet management
• Reading the history of events (logs) from the panel
• AGC function (automatic control of signal amplification)

Estore: Transmodulators Library: About TV & SAT Antennas (3), In the Home (5), SMATV Systems (15), Installation Components (14), Designing (4), Measurements (4), Diagrams (13), Some Theory (12), DVB-T & DAB (9), CPR (1), HDMI (3).

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Warranty

4-year warranty.

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Details

Terra TDX-481 R81621 DVB-S/S2 to DVB-T transmodulator is used for reception of FTA DVB-S/S2 (8PSK/QPSK) signals, selection of desired channels and retransmission of them in COFDM format in chosen RF channels in VHF/UHF frequency range. The device allows the user to receive and manage a range of free to air satellite channels. One TDX-480 R81621 panel can receive channels from eight satellite transponders and convert them into two groups of four neighboring DVB-T multiplexes with maximum throughput of 31.66 Mbps (no PID filtering). In practice, each of the eight multiplexes can carry 6 SD channels or 2-3 HD channels. The administrator of the system selects the required channels from the satellite streams and forms eight DVB-T multiplexes. Remultiplexing the streams, it is neceeesary to remember about 10% safety margin when determining the maximum bit rate for the whole multiplex (typically the ultimate bit rate of a multiplex should not exceed 29 Mbps). The output DVB-T COFDM multiplexes are usually distributed to users by a passive network composed of RF splitters/taps. Such a solution is especially convenient in modern hotel TV systems distributing a variety of satellite channels, including HD broadcasts.

Thanks to RJ-45 Ethernet port, the programming of the TDX-481 R81621 panel is performed via a web browser.

The TDX-480 R81621 unit is dedicated for receiving FTA satellite channels. In the case of encrypted channels, the suitable model is TDX-420C R81619.

A great advantage of the Terra device is easy integration with other components:

dSCR/Unicablemultiswitches, which enable independent distribution of DVB-S/S2 signal using one cable
streamers IPTV - enable distribution and management of satellite, terrestrial and DVB cable TV offerings via Ethernet (LAN) based on a twisted-pair cable
optical transmitters - transmit television signals using fibre-optic medium
devices dedicated to reception and processing of television signals (channel and broadband amplifiers, analogue and digital modulators)

The R81621 units can be mounted on the R82538 or R82539 DIN rail (also in a RACK cabinet) and powered from DR-60-12 R82532 or UP413 R82533 power supply.

Key features:

conversion of DVB-S/S2 signals from eight satellite transponders into 8 DVB-T COFDM multiplexes
TDX-480 creates two independent groups of four adjacent DVB-T multiplexes (8 DVB-T MUXes, each with a maximum capacity of 31.66 Mbit/s)
built-in remultiplexer - creates DVB-T multiplexes with any programme content
channel selection and filtering of unnecessary services in the digital stream
simple control interface via RJ-45 port, which greatly simplifies the installation procedure
Internet management
reading the history of events (logs) from the panel
AGC function (automatic gain control)

View of the information window of TDX-481 R81621 module

(among others DVB-S2 input RF levels, SNR, VBER parameters)

Selection of channels and filtration of services

The TDX-481 R81621 transmodulator creates two independent groups of four neighboring DVB-T multiplexes. With these parameters, the maximum bandwidth of each of the eight DVB-T multiplexes is 31.66 Mbps, in compliance with the DVB-T standard.

An example of SMATV system. Thanks the application of the SRM-522 R80522 multiswitch, the system can distribute satellite channels selected from the whole Ku band (11.7 ... 12.75 GHz).

Add to the Cart items from the diagram

DIPOL offers the following transmodulators of DVB-S/S2 (8PSK, QPSK) signals:

Model	TDX-410C	TDX-420	TDX-420C	TDX-440	TDX-480

Code	R81617	R81618	R81619	R81614	R81621
Input signals	DVB-S/S2 (8PSK, QPSK)	DVB-S/S2 (8PSK, QPSK)	DVB-S/S2 (8PSK, QPSK)	DVB-S/S2 (8PSK, QPSK)	DVB-S/S2 (8PSK, QPSK)
Number of transponders	1	2	2	8	8
Output signals	DVB-T COFDM	DVB-T COFDM	DVB-T COFDM	DVB-T COFDM	DVB-T COFDM
Number of MUXes	1	2	2	4	8
Max. bit rate [Mbps]	31.66	2x31.66	2x31.66	4x31.66	8x31.66
CI slot	1x	No	2x	No	No

Customers can also order DVB-S/S2--> DVB-C (QAM) transmodulators.

Specifications

Product type			Transmodulator
Name			tdx481
Brand			TERRA
Conversion			DVB-S/S2--->DVB-T
RF input	Number of supported transponders		8
	Frequency range	MHz	950...2150
	Power supply/control		0/13/18 V & 22 kHz, max. 1 A,DiSEqC 1.0, EN50607, EN50494
	standard		DVB-S/S2
	Modulation		QPSK, 8PSK
	Symbol rate	Ms/s	2...45
	Signal strength	dBµV	55...95
	Impedance	Ohm	75
	RF throughput - gain	dB	-1 ± 1
RF input	Number of F-connectors		2
Channels	FTA (uncoded)		Yes
Channels	Coded (CI slot)		No
Technical specifications
RF output	standard		DVB-T/ISDB-T
RF output	Number of DVB-T MUXes		8 (2 × 4 nearby)
	Modulation		QPSK, QAM16, QAM64
	Frequency range	MHz	170...230, 470...862
	Signal strength	dBµV	90
	Signal pos. adjustment	dB	0...15 with step 1 dB
	Impedance	Ohm	75
	MER	dB	≥35
	Channel bands	MHz	7.8
	Security interval		1/4, 1/8, 1/16, 1/32
	FEC		1/2, 2/3, 3/4, 5/6, 7/8
	FFT mode		2K
RF output	Bandwidth	Mbps	8 × 31,67
RF combiner	Frequency range	MHz	47...862
RF combiner	Connector		F
RF combiner	Loss	dB	2.5
General
Configuration	Port		RJ-45 (web browser)
Configuration	IP address		192.168.1.10
Configuration	Remote		Yes
Current drawn		V/A	DC 12/1.1
Operating temperature		°C	0...+45
Weight		kg	0.9
Dimensions		mm	48,5 × 198 × 112

Videos

Hotel TV system based on conversion of DVB-S/S2 signals to DVB-T standard

2017-12-20

Digital headends distributing satellite channels converted to DVB-T COFDM form have become popular solutions in hotels. TERRA system has been designed for building TV distribution installations providing signals to standard televisions with built-in DVB-T tuners and allowing reception of terrestrial (DVB-T) and satellite (DVB-S/S2) channels ...