GT 24 W Tangram module IP to 8x COFDM
Category : Tangram
The GT 24 W module is part of the Tangram product portfolio. The GT 24 W module allows you to add up to 8 channels in COFDM (DVB-T) format per module to your network. Tangram is a very high density and highly flexible solution for all kinds of networks. The WISI Tangram chassis uses a fully redundant concept (n+1, 1+1).
- High quality IP to COFDM modulation
- Up to 8 COFDM channels on 2 RF outputs
- Outstanding signal parameters by direct digital modulation
- RTP/ IP input streaming with FEC error correction
- High density 48 COFDM channels in 1 RU
- DVB/ARIB transport stream processing
- For measurement / monitoring test ports of the output signal
- DVB CSA Simulcrypt scrambling
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Interface Gigabit Ethernet |
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| Data protocol | MPEG over UDP/IP and RTP/IP |
| Communication protocol | Unicast and multicast IGMP V2 (optional V3) |
| Syntax | SPTS and MPTS (ISO/IEC 13818) |
| Maximum data input bitrate using several MPTS signals | >800 Mbps (using multiple MPTS signals) |
| Maximum MPTS input bitrate | >100 Mbps (per specific MPTS) |
| Services per MPTS | 1024 pcs. (per module) |
| Number of filter | up to 32 (multicast/unicast filter) |
| Jitter tolerance | ±100 ms |
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TS Processing |
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| SPTS/MPTS Multiplexing inc. | SPTS / MPTS Multiplexing inc. supported |
| PID-Remapping | PID-Remapping |
| MPTS Pass-Through | Yes |
| SI-Table handling | Yes |
| Individual Cycle Times for Outgoing PSI-/SI-Tables | Yes |
| Max. number of simultaneous E 16 | 16 pcs. |
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COFDM Processing |
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| MER | >40 dB (typ. 42 dB) |
| SNR | ≥45 dB |
| Roll-Off | 35 % |
| BER | ≤1*10-10 |
| I/Q Ampl. Imbalance | ≤0,10 % |
| I/Q Quadratur Error | ≤0,10 ° |
| Modulation | QPSK, 16-, 64-QAM |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard Interval | 1/4, 1/8, 1/16, 1/32 |
| FFT Mode | 2k, 8k switchable |
| Spectrum flatness | ±0,3 dB |
| Shoulder attenuation | ≥54 dB |
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RF parameters |
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| Output ports | 2 pcs. |
| Channels per port | up to 4 (2k-mode) or 3 (2k/8k-mode) |
| Output impedance | 75 Ω |
| Output frequency | 45...862 MHz |
| Output frequency window | 34,2 MHz (per port) |
| Output frequency steps | 1 kHz |
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Modulation COFDM |
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| Channel bandwidth | 5 / 6 / 7 / 8 MHz |
| Output level (each RF port) | 115(1 ch), 111(2 ch), 109(3 ch), 107(4 ch) dBµV |
| Test port at each output | -20 dB (±1 dB) |
| Output level stability | ±1 dB |
| Output return loss | ≥14 dB (45 MHz -1,5 dB/Okt.) |
| Output level setting | 0...30 dB (0,5 dB steps) |
| Spurious (Inside TV-Channels) | >60 dB |
| Spurious (Outside TV-Channels) | 45...450 MHz, typ. 66 dB, 450...862 MHz, typ. 64 dB, 862...1006 MHz, typ. 64 dB |
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Connectors |
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| RJ45 | 1 pcs. |
| F-socket RF- output | 4 pcs. |
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General data |
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| Power consumption max. | <20,4 W (max.) |
| Dimensions (width x height x depth) | 100 x 200 mm |
| Operating temperature range | -5°C...+45 °C (ETSI EN 300 019-1-3 Class 3.1) |