DVB-T/T2/C - DVB-T (COFDM) Transmodulator: TERRA TTX410C (CI slot)

View of the included accessories - wall mount, distance lath, RF bridge, termination load resistor

Code: R81615

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Views of the DVB-T/T2/C - DVB-T (COFDM) TTX410C R81615 transmodulator

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

View of the included accessories - wall mount, distance lath, RF bridge, termination load resistor

DVB-T/T2/C - COFDM TTX-410C R81615 transmodulator is used for reception of DVB-T/T2/C signals, some corrections of TS parameters (regeneration, filtering etc.) and retransmission of them in COFDM format in selected channel in VHF/UHF frequency range. It allows for distribution of digital TV channels in situations when the signal received by the antenna cannot be directly amplified or converted to a different frequency due to high BER and low MER levels. Built-in CI CAM interface for conditional access modules enables the transmodulator to operate with scrambled services. In multiplexing mode, one panel receives a whole multiplex (up to 10 or so channels) and converts it to DVB-T multiplex with up to 5 services (max 31 PIDs) with max throughput of 31.66 Mbps. In transparent mode, the module transfers to the output DVB-T multiplex the whole input stream. The output DVB-T COFDM multiplex is usually distributed to users by a passive network composed of RF splitters/taps.

The regeneration process consists of receiving the DVB-T/T2/C signal, demodulating it to the transport stream, and then re-modulating RF signals as a new COFDM multiplex (frequency converter function). MER (modulation error rate) at the output of the device is not lower than 35 dB, which allows for the distribution of the digital multiplex even in very large MATV systems.

The device can operate in two modes:

transparent mode - the decoded transport stream is not modified and is directly applied to the COFDM modulator - without PID filtration;
multiplexing mode - the device examines the decoded transport stream (measures the bit rate, updates SI arrays) and optionally filters programs and services.

The TTX-410C R81615 panel has CI slot that in the case of receiving encrypted programs must be equipped with suitable conditional access module (CAM) with dedicated smart card.

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

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).

The devices 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 one DVB-T/T2/C multiplex to DVB-T COFDM multiplex;
transparent regeneration of DVB-T/T2/C stream;
changing the frequency of DVB-T /T2/C multiplex;
AGC;
service filtering;
minimum input signal level: 40 dBμV;
output level adjustment range: 0...-15 dB (1 dB step)
easy control via RJ-45 port;
CI slot for a CAM (multidescrambling option)
generating new stream descriptors;
low power consumption, redundant power supply option;
RF loop.

View of the information window of TTX-410C R81615 module (among others: input level, SNR, VBER parameters)

List of services with additional information

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:

Name		TTX410C
Code		R81615
RF input	Frequency range [MHz]	47 - 862
	Power for a preamp [V/mA]	12 / 100
	Level/Impedance [dBμV/Ω]	40 - 80 / 75
	Loop through gain [dB]	-1 ±1
	Standard	DVB-T	DVB-T2	DVB-C
	Modulation	QPSK, QAM16, QAM64	QPSK, QAM16, QAM64, QAM256	QAM16, QAM32, QAM64, QAM128, QAM256
	RF channel width [MHz]	7 or 8	7 or 8	-
	Symbol rate [Ms/s]	-	-	1...7.2
	FEC	1/2, 2/3, 3/4, 5/6, 7/8	1/2, 3/5, 2/3, 3/4, 4/5, 5/6	-
	Roll-off coef. [%]	-	-	15





RF output	Frequency range [MHz]	170 - 230 / 470 - 860
	Level/Impedance [dBμV/Ω]	90 ±2 / 75
	Spurious level [dB]	< -60
	Loop loss [dB]	≤ 2.5 dB
	MER	≥ 35 dB
	Modulation	QPSK, QAM16, QAM64
	Channel width [MHz]	7/8
	Guard interval	1/4, 1/8, 1/16, 1/32
	FEC	1/2, 2/3, 3/4, 5/6, 7/8
	FFT mode	2K / 8K
	Output level adj. [dB]	0...-15 (step 1)
Transport stream parameters	Max. bitrate [kb/s]	31670
	Max. number of PIDs	31
	PCR	up to 5 services
Other specs	Ethernet port	IEE802.3 10/100 Base-T (RJ45)
	Power [V/A]	12/0.45
	Oper. temp. [ºC]	0...50
	Dimensions [mm]	36x198x112
	Weight [kg]	0.78