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Outline
The DEXIN NDS2401A DVB-T Modulator is a high performance modulator developed according to DVB-T (EN300744) standard. It adopts advanced framing structure, channel coding and modulation technology. And it also supports both MFN (Multi-frequency network) and SFN (single frequency network). It has 4 AIS input ports, one GPS.10MHZ input port and one 1 PPS input port. In order to improve the output performance of the transmitter, the DVB-T modulator can simultaneously support linear and nonlinear pre-correction. This device supports local and remote control through NMS software.
Features
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Fully complying with DVB-T standard (EN300744)
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SFN and MFN supporting
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Transfer mode 2k, 4k, 8k optional
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Hierarchy modulation Alpha1, 2 and 4 optional
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Transfer bandwidth 6M, 7M and 8M optional
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Supporting linear and non-linear correction
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Excellent phase noise and MER performance, MER ≥42db
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RF output range 36~960MHz, 1hz step
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Four ASI inputs supporting hot backup
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Constant temperature crystal oscillator, frequency stability is high up to 0.1ppm
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Full-size front panel LCD display and keyboard, NMS management.
Specifications
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Input |
4 channels ASI input, hot backup, BNC port |
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GPS 10Mhz reference clock input, BNC port |
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GPS 1PPS input, BNC port |
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Modulation |
standard |
EN304 744 |
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FFT |
2K,4K,8K |
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bandwidth |
6M,7M,8M |
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constellation |
QPSK,16QAM,64QAM |
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Guard interval |
1/4,1/8,1/16,1/32 |
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FEC |
1/2,2/3,3/4,5/6,7/8 |
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Hierarchy modulation |
Alpha=1,2,4 |
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RF output |
ASI loop out |
2channels ASI loop out, BNC port |
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interface |
N type, 50Ω impedance |
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RF range |
36~960MHz,1hz step |
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ATT |
-16dbm~+3dbm,0.1db step |
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MER |
≥ 42db |
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Linear pre-correction |
Correction points |
16 |
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Non-linear pre-correction |
Correction points |
512 |
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System |
Full-size front panel LCD display and keyboard, NMS management |
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Software upgrading |
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General |
Demission (W*L*H) |
482mm×455mm×44.5mm |
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Weight |
6.1kg |
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Temperature |
0~45℃(operation),-20~80℃(storage) |
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Power supply |
AC 110V±10%,50/60Hz or AC 220V±10%,50/60Hz |
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Consumption |
28.6W |
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