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Views of the 4xDVB-T/T2 - 4xDVB-C (QAM) TERRA TTQ-440 R81622 transmodulator
View of the included accessories:
wall mount, distance lath, RF bridge, termination load resistor
wall mount, distance lath, RF bridge, termination load resistor
Terra TTQ-440 R81622 DVB-T to DVB-C transmodulator is used for reception of DVB-T signals and retransmission of them in QAM format in chosen RF channels. The TTQ-440 R81622 panel can receive four FTA DVB-T/T2 (COFDM) multiplexes and convert them into four neighboring DVB-C multiplexes that can be received by any common televisions equipped with DVB-C tuners. The output DVB-C QAM 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 channels, including HD broadcasts.
Thanks to RJ-45 Ethernet port, the programming of the TTQ-440 R81622 panel is performed via a web browser.
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),
- compact digital headend S2C16 - S2C16 R81620 converting DVB-S/S2 (8PSK/QPSK) broadcasts into DVB-C (QAM) multiplexes.
Key features
- conversion of DVB-T/T2 signals to DVB-C QAM standard,
- conversion of four DVB-T/T2 multiplexes to 4 neighboring DVB-C multiplexes,
- automatic gain control (AGC),
- easy control via RJ-45 port,
- management via the Internet,
- access to event history (logs),
- RF loop.
View of the information window of TTQ-440 R81622 module
(parameters of the 1st DVB-T signal - among others input level, SNR, VBER)
Parameters of the four output DVB-C QAM multiplexes
Specifications:
| Name | TTQ-440 | |||
| Code | R81622 | |||
| Number of DVB-T/T2 multiplexes | 4 | |||
| RF input | Frequency range [MHz] | 47 - 862 | ||
| Ant. preamplifier power [V/mA] | 12 / 100 | |||
| Level/Impedance [dBμV/Ω] | 40 - 80 / 75 | |||
| RF loop gain [dB] | 0 ± 1 | |||
| Standard | DVB-T | DVB-T2 | ||
| Modulation | QPSK, QAM16, QAM64 | QPSK, QAM16, QAM64, QAM256 | ||
| Channel width [MHz] | 7/8 | 7/8 | ||
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | 1/2, 3/5, 2/3, 3/4, 4/5, 5/6 | ||
| RF output | Frequency range [MHz] | 230 - 446 / 470 - 862 | ||
| Number of DVB-C multiplexes | 4 (neighboring) | |||
| Level/Impedance [dBμV/Ω] | 90 ± 2 / 75 | |||
| RF loop band [MHz]/Atten.[dB] | 47-2150/2.5 | |||
| Spurious level [dB] | < -60 | |||
| Attenuation [dB] | ≤ 2.5 dB | |||
| MER | ≥ 40 dB | |||
| Symbol rate [Ms/s] | 3.5...7.2 | |||
| Modulation | QAM16, QAM32, QAM64, QAM128, QAM256 | |||
| Channel width [MHz] | 4...8.3 | |||
| Guard interval | 1/4, 1/8, 1/16, 1/32 | |||
| Output level adj. [dB] | 0...-15, step 1 | |||
| Transport stream parameters | Max. bit rate [Mb/s] | 53 (each MUX) | ||
| General | RJ45 Ethernet | standard IEE802.3 10/100 Base T | ||
| Power [V/A] | 12 / 0.7 | |||
| Oper. temperature range [ºC] | 0...50 | |||
| Dimensions [mm] | 48.5x198x112 | |||
| Weight [kg] | 0.9 | |||
Specifications
| Product type | Transmodulator | ||
| Name | ttq440 | ||
| Brand | TERRA | ||
| Conversion | DVB-T/T2--->DVB-C | ||
| RF input | No. of MUXes supported | 4 | |
| Number of F-connectors | 1 | ||
| Channels | FTA (uncoded) | Yes | |
| Channels | Coded (CI slot) | No | |
| Specyfikacja techniczna | |||
| RF input | Frequency range | MHz | 47...862 |
| Power supply/control | DC 12 V/0,1 A | ||
| standard | DVB-T2 | ||
| Modulation | QPSK, QAM16, QAM64, QAM256 | ||
| FEC | 1/2, 3/5, 2/3, 3/4, 4/5, 5/6 | ||
| standard | DVB-T | ||
| Modulation | QPSK, QAM16, QAM64 | ||
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | ||
| Channel bands | MHz | 7, 8 | |
| Signal strength | dBµV | 40...80 | |
| Impedance | Ohm | 75 | |
| RF throughput - gain | dB | -1 ± 1 | |
| RF output | standard | DVB-C | |
| RF output | Number of DVB-C MUXes | 4 (nearby) | |
| Modulation | QAM16, QAM64, QAM128, QAM256 | ||
| Frequency range | MHz | 230...446, 470-862, step 100 kHz | |
| Signal strength | dBµV | 90 | |
| Signal pos. adjustment | dB | 0...15 with step 1 dB | |
| Impedance | Ohm | 75 | |
| MER | dB | >40 | |
| Channel bands | MHz | 4...8.3 | |
| Symbol rate | Ms/s | 3.5...7.2 | |
| RF output | Bandwidth | Mbps | 4 × 53 |
| RF combiner | Frequency range | MHz | 47...2150 |
| RF combiner | Connector | F | |
| Loss | dB | 2.5 | |
| General | |||
| Configuration | Port | RJ-45 (web browser) | |
| Configuration | IP address | 192.168.1.10 | |
| Remote | Yes | ||
| Current drawn | V/A | DC 12/0.7 | |
| Operating temperature | °C | 0...+50 | |
| Weight | kg | 0.9 | |
| Dimensions | mm | 48,5 × 198 × 112 | |
