| DMB-2028 DVB-T modulator is designed to meet the most demanding of today's digital terrestrial TV broadcast market, which is applied especially to the medium and small terrestrial digital TV systems and enterprises. It supports DVB-T whole working modes, hierarchical mode as well as VHF and UHF band frequency agile signal output. with high quality RF signal, it directly drives the low power digital TV transmitter, and contains such three test modes as NULL insertion, PRBS sequence, test stream, which supply comprehensive and reliable DVB-T signal source system for R&D company or manufacturer. DMB-2028 DVB-T modulator is the cost-effective modulator. |
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| 1.2 MAIN FEATURES |
| 1) DVB-T supported |
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| 2) 2K, 8K modes supported |
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| 3) Frequency agile 48MHz ~870MHz, in 1Hz step |
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| 4) 0dBm RF output level,10dB attenuation range, in 0.1dB step |
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| 5) Bit rate adaptation and PCR re-stamping |
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| 6) High quality RF modulation |
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| 7) 3 kinds of TS test modes |
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| 8) Web browser remote control, SNMP supported |
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| 1.3 SPECIFICATIONS |
| MPEG-TS Input |
| 1) comply with ETS 300744 and TS101191 |
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| 2) 1 ASI input, bit rate adaptation |
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| 3) 188 Bytes supported |
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| 4) ASI packet modes: burst/byte |
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| 5) Max effective bit rate: up to 31.67Mbps |
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| 6) Connector: BNC, 75 ohm |
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| TS Test Mode |
| 1) NULL symbol insertion |
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| 2) PRBS sequence |
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| 3) Test stream |
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| Clock and Synchronization |
| 1) Internal reference clock 10MHz (OCXO) |
| Control |
| 1) Front Panel |
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| 2) Web browser remote control, SNMP supported |
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| RF output |
| 1) Frequency:48MHz ~ 870MHz, in 1Hz step |
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| 2) Main Output Level: 0dBm |
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| 3) Attenuation: -10dB–0dB in 0.1dB step |
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| 4) Monitoring output: -20 dB |
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| 5) Return Loss: >15dB |
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| 6) Level Stability: ±0.5dB |
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| 7) I/Q amplitude unbalanced: <0.05% |
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| 8) I/Q quadrature error: <0.05º |
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| 9) MER: >40dB |
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| 10) Spurious: >55dB(related to the whole signal power) |
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| 11) Connector: N, 50ohm |
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| Modulation and code |
| 1) Supported ETS 300744 standard |
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| 2) Supported Modes: DVB-T |
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| 1) FFT: 2K, 8K |
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| 2) Guard Intervals: 1/4, 1/8, 1/16, 1/32 |
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| 3) FEC: 1/2, 2/3, 3/4, 5/6, 7/8 |
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| 4) Constellations: QPSK, 16QAM, 64QAM |
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| 5) Inner interleave: Native |
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| 6) Channel Bandwidth: 6MHz, 7MHz, 8MHz, |
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| 7) TPS signal: DVB-T |
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| Mechanical Parameter |
| 1) Voltage: AC 90~260V, 50~60Hz |
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| 2) Consumption: 40W |
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| 3) Operating temperature: -10~50° |
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| 4) Storage temperature: -20~70° |
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| 5) Humidity: 10%-95% |
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| 6) Dimension: 400mm(L)X430mm(W)X45mm(H) |
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| 7) Weight: 6kg |
