Code: R81619

€546.41

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The tdx420c 2xDVB-S/S2 (8PSK, QPSK) - 2xDVB-T (COFDM) transmodulator with a double CI slot enables the conversion of DVB-S/S2 signals from 2 satellite transponders to 2 DVB-T MUXes.

• Conversion of DVB-S/S2 signals to DVB-T COFDM standard
• 2 SAT transponders for 2 DVB-T MUXes
• Possibility to create one DVB-T MUX from two SAT transponders
• Channel selection and filtering of unnecessary services in the digital stream
• Simple control interface via RJ-45 port, which greatly simplifies the installation procedure
• 2 CI ports (multidescrambling)
• Internet management
• Reading of event history (logs) from the panel
• AGC function (automatic signal gain control)

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

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4-year warranty.

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Details

Terra TDX-420C R81619 DVB-S/S2 to DVB-T transmodulator is used for reception of 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 and encrypted satellite channels (CI/CAM compatibility). One TDX-420C R81619 panel can receive channels from two satellite transponders and convert them into two neighboring DVB-T multiplexes with maximum throughput of 31.66 Mbps. In practice, each multiplex 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 two DVB-T multiplexes. Alternatively, one DVB-T multiplex can be programmed from channels coming from two different satellite transponders. In each case, 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). When a higher throughput is required, the system should be equipped with additional TDX-420C R81619 unit(s). 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-420C R81619 panel is performed via a web browser.

The TDX-420C R81619 panel has a double CI (Common Interface) connector, to which, in the case of reception of encrypted programs, it is necessary to install an appropriate (for the coding system of the selected transponder) conditional access module. The card placed in it decodes the signal from selected channels of a given satellite transponder.

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

dSCR/Unicable multiswitches, allowing for independent distribution of DVB-S/S2 channels via one coaxial cable
IPTV streamers for management and distribution of satellite, terrestrial and cable DVB channels within Ethernet (LAN) networks based on twisted-pair cabling
optical transmitters for transmission TV programming via optical links
other receiving and signal processing devices (broadband and channel amplifiers, analog and digital modulators)

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

DVB-S/S2 (8PSK, QPSK) to 2xDVB-C (QAM) Terra TDQ-420C R81639 (two CI slots)
DVB-S/S2 (8PSK, QPSK) to 2xDVB-C (QAM) Terra TDQ-420 R81638

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

	TDX-410C	TDX-420	TDX-420C	TDQ-420	TDQ-420C

Code	R81617	R81618	R81619	R81638	R81639
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	2	2
Output signals	DVB-T COFDM	DVB-T COFDM	DVB-T COFDM	DVB-C QAM	DVB-C QAM
Number of MUXes	1	2	2	2	2
Max. bitrate [Mb/s]	31.66	2x31.66	2x31.66	2x53	2x53
CI slot(s)	1x	no	2x	no	2x

The R81619 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 to DVB-T COFDM standard
conversion of the whole package of signals from two satellite transponders to 2 adjacent DVB-T multiplexes
possibility to create one DVB-T multiplex from two different satellite transponders
channel selection and filtering of unnecessary services in the digital stream
simple control interface via RJ-45 port, which greatly simplifies the installation procedure
device equipped with 2 CI ports - decoding of pay channels (multidescrambling)
management via the Internet
reading history of events (logs) from the panel
AGC function (automatic control of signal amplification)

View of the information window of TDX-420C R81619 module

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

IPTV Streamer: TERRA sdi 480 (DVB-S/S2 to IP, USB port)

Selection of channels and filtration of services

For the above parameters, the maximum throughput for each of the two DVB-T multiplexes is 31.68 Mbit/s according to the standard.

Output bandwidth is used at 50% (16.0 Mbit/s of the available 31.68 Mbit/s) for MUX-1 and 26% (8.5 Mbit/s of the available 31.68 Mbit/s) for MUX-2.

Example of mounting TERRA headend to CD001 housing with DIN rail BD001 R90001. Additionally, there are the SRM-522 R80522 multiswitch and an Ethernet switch mounted on the ID001 R90003 mounting plate. The whole system has the FD001 R90002 ventilation unit with thermostat added.

Set of ttx410C R81615 and tdx410C R81617 transmodulators used in an SMATV system. For the reception of pay-TV channels it is necessary to install suitable conditional access module.

Notice: The transmodulator is compatible only with CI CAM modules (no support for CI+).

Specifications

Product type			Transmodulator
Name			tdx420c
Brand			TERRA
Conversion			DVB-S/S2--->DVB-T
RF input	Number of supported transponders		2
	Frequency range	MHz	950...2150
	Power supply/control		0/13/18 V & 22 kHz, max. 1 A,DiSEqC 1.0, EN50607, EN50494
	standard		DVB-S2
	Modulation		QPSK, 8PSK, APSK 8/16/32
	FEC		8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10, QPSK: 1/2, 3/5, 2/3, 3/4, 5/6, 8/9, 9/10
	standard		DVB-S
	Modulation		QPSK
	FEC		1/2, 2/3, 3/4, 5/6, 7/8
	Symbol rate	Ms/s	2...45
	Signal strength	dBµV	45...85
	Impedance	Ohm	75
	RF throughput - gain	dB	-1 ± 1
RF input	Number of F-connectors		1
Channels	FTA (uncoded)		Yes
Channels	Coded (CI slot)		TAK (2 × )
Technical specifications
RF output	standard		DVB-T/ISDB-T
RF output	Number of DVB-T MUXes		2 (nearby)
	Modulation		DVB-T: QPSK, QAM16, QAM64, ISDB-T: QPSK, DQPSK, QAM16, QAM64
	Frequency range	MHz	100...858, step 100 kHz
	Signal strength	dBµV	90
	Signal pos. adjustment	dB	0...15 with step 1 dB
	Impedance	Ohm	75
	MER	dB	≥38 (100...780 MHz), ≥35 (780...860 MHz)
	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	2 × 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 12/0.55
Operating temperature		°C	0...+50
Weight		kg	0.9
Dimensions		mm	48,5 × 198 × 112

Videos

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

2018-02-12

Digital headends distributing satellite channels converted to DVB-T COFDM form have become popular solutions in hotels. The 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 without additional receivers/STBs. The output RF signals in the single DVB-T COFDM standard are distributed to outlets in rooms via typical coaxial cabling.