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NDS2401G DVB-T Modulator
Outline
The NDS2401G DVB-T Modulator is a high performance modulator developed according to the DVB-T (EN300744) standard. It adopts advanced framing structure, channel encoding and modulation technology. It supports both MFN (Multi-frequency network) and SFN (single frequency network). In order to improve the output performance of the transmitter, this DVB-T modulator can support nonlinear digital pre-distortion. Moreover, this device facilitates the local and remote control with web software.
Features
1. Fully complying with DVB-T standard (EN300744)
2. 2 ASI in & 2 IP (DATA1& DATA2) input for hot backup input, 1 RF in, 10MHz reference clock and 1PPS in
3. Support both SFN and MFN
4. Transmission mode: 2k, 8k
5. Transmission bandwidth 5M, 6M, 7M and 8M
6. Excellent phase noise and MER performance, MER≥42db
7. Support spectrum invert
8. RF output range 50~1000MHz, 1Hz step
9. Supports adaptive non-linear digital pre-distortion (DPD)
10. Constant temperature crystal oscillator, frequency stability is high up to 0.1ppm
11. Full-size front panel LCD display, keyboard and web management
Specifications
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Input |
2channels ASI input& 2 IP input, can only select 1 input as source, but all 4 inputs ports are hot backup IP with UDP/RTP protocol, with Multicast/Unicast IP with PCR adjust feature also |
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GPS 10Mhz reference clock input, BNC port |
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GPS 1PPS input, BNC port |
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1 RF input for DPD -25dbm~+5dbm |
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Modulation |
Standard |
EN300 744 |
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FFT |
2K, 8K |
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Bandwidth |
5M, 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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RF output |
Interface |
N type, 50Ω impedance |
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RF range |
50~1000MHz，1hz step |
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RF output level |
-15dbm~+5dbm, 0.1db step |
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RF level offset |
-3dbm~+3dbm, 0.1db step |
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MER |
≥ 42db |
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ASI output |
2 ASI ports output for the passthrough of the input ASI Signal, both ASI out are the same |
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Non-linear DPD |
over 10db ACPR improvement (normally) |
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System |
LCD display & keyboard operation, web management |
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Software upgrading through NMS port |
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General |
Demission (W*L*H) |
440mm×414mm×44.5mm |
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Weight |
4.9kg |
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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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Power Consumption |
To be tested |
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Principle Chart
