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Transmodulátory
DVB-S/S2 (8PSK, QPSK) to 2xDVB-C (QAM) Transmodulator: TERRA TDQ-420C (2xCI)
Kód tovaru: R81639
Views of the DVB-S/S2 (8PSK, QPSK) to 2xDVB-C (QAM) TDQ420C R81639 transmodulator
View of the TDQ-420C R81639 transmodulator with two inserted CAMs decoding encrypted channels
Key features
- conversion of DVB-S/S2 signals to DVB-C QAM standard,
- conversion of multiple signals from two satellite transponders to 2 neighboring DVB-C multiplexes,
- possibility to create one DVB-C multiplex from two different satellite transponders,
- selectable channels and services,
- easy control via RJ-45 port,
- two CI ports (multi-channel descrambling of pay-TV)
- management via the Internet,
- access to event history (logs),
- automatic gain control (AGC).
Terra TDQ-420C R81639 DVB-S/S2 to DVB-C transmodulator is used for reception of DVB-S/S2 (8PSK/QPSK) signals, selection of desired channels and retransmission of them in QAM 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 TDQ-420C R81639 panel can receive channels from two satellite transponders and convert them into two neighboring DVB-C multiplexes with maximum throughput of 53 Mbps (no PID filtering). In practice, each multiplex can carry 8 SD channels or 4-5 HD channels. The administrator of the system selects the required channels from the satellite streams and forms two DVB-C multiplexes. Alternatively, one DVB-C 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 50 Mbps). When a higher throughput is required, the system should be equipped with additional TDQ-420C R81639 unit(s). 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 satellite channels, including HD broadcasts.
Thanks to RJ-45 Ethernet port, the programming of the TDQ-420C R81639 panel is performed via a web browser.
The TDQ-420C R81639 panel has two CI slots that in the case of receiving encrypted programs must be equipped with suitable conditional access modules (CAM) with dedicated smart cards.
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).
View of the information window of TDQ-420C R81639 module
(among others DVB-S2 input RF levels, SNR, VBER parameters)
Notice: The transmodulator is compatible only with CI CAM modules (no support for CI+).
Specifications:
Name | TDQ-420C | |||
Code | R81639 | |||
Number of supported transponders | 2 | |||
RF input | Frequency range [MHz] | 950 - 2150 | ||
Power for an LNB / Control | 0/14/18 V, max 300 mA / DiSEqC 1.0, EN50607, EN50494 | |||
Level/Impedance [dBμV / Ω] | 45 - 85 / 75 | |||
Loop through gain [dB] | -1 ±1 | |||
Standard | DVB-S | DVB-S2 | ||
Modulation | QPSK | QPSK, 8PSK, APSK 8/16/32 | ||
Symbol rate [Ms/s] | 2...45 | 2...45 | ||
FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | QPSK: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10 8PSK: 3/5, 2/3, 3/4, 5/6, 8/9, 9/10 | ||
Roll-off coef. [%] | 35 | 20, 25, 35 | ||
RF output | Frequency range [MHz] | 100...858 (100 kHz step) | ||
Level/Impedance [dBμV / Ω] | 90 ±2 / 75 | |||
Spurious level [dB] | < -60 | |||
Loop loss [dB] | ≤ 2.5 dB | |||
MER | ≥ 40 dB | |||
Modulation | QAM16, QAM32, QAM64, QAM128, QAM256 | |||
Channel width [MHz]/Symbol rate [MS/s] | 4...8.3/ 3.5...7.2 | |||
Guard interval | 1/4, 1/8, 1/16, 1/32 | |||
FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | |||
FFT mode | 2K | |||
Output level adj. [dB] | 0...-15 (step 1) | |||
Transport stream parameters | Max. bitrate [kb/s] | 53000 | ||
Max. number of PIDs | no filtering | |||
- | - | |||
Other specs | RF loop (frequency range/loss) | 47-862 MHz / ≤ 2.5 dB | ||
Ethernet port | IEE802.3 10/100 Base-T (RJ45) | |||
Power [V / A] | 12 / 0.55 | |||
Oper. temperature range [ºC] | 0...50 | |||
Dimensions [mm] / Weight [kg] | 48.5x198x112 / 0.9 |
DVB-S/S2 (8PSK, QPSK) to 2xDVB-C (QAM) Transmodulator: TERRA TDQ-420C (2xCI)
Kód tovaru: R81639
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