Outline
The Xielide XLD2401C DVB-T Modulator is a high performance modulator developed according to 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). It equipped with four ASI hot backup input, one GPS 10MHz input port and one 1PPS input port. In order to improve the output performance of the transmitter, this DVB-T modulator also simultaneously supports adaptive linear and nonlinear digital pre-distortion. Moreover, this device facilitates the local and remote control with SNMP software.
Principle chart
Features
* Compliant to DVB-T (EN300744) standard
* 4 ASI input supports hot backup
* Support 1 RF input for adaptive digital pre-distortion(DPD)
* Support 1external GPS 10MHz clock and 1PPS input for SFN
* Support SFN and MFN
* Transmission mode(FFT): 2k, 4k, 8k
* MFN Hierarchical modulation: None, Alpha1, Alpha 2 and Alpha 4
* Transfer bandwidth2M, 5M, 6M, 7M and 8M
* Excellent RF performance, MER≥42db
* RF output frequency range 30~960MHz, 1hz stepping
* Supports adaptive linear digital pre-distortion (DPD)
* Supports adaptive non-linear digital pre-distortion (DPD)
* Constant temperature crystal oscillator, frequency stability is high up to 0.1ppm
* LCD/keyboard, SNMP software management
Specifications
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Input |
4xASI input, hot backup |
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GPS 10MHz reference clock input for SFN |
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GPS 1PPS input for SFN |
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1 RF input for DPD |
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Modulation |
standard |
DVB-T(EN300 744) |
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FFT |
2K, 4K, 8K |
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bandwidth |
2M, 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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Hierarchical modulation |
None, Alpha1, Alpha 2, Alpha 4 |
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RF output |
interface |
N type, 50Ω impedance |
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RF range |
30~960MHz，1Hz stepping |
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Output level |
-26dbm~+3dbm，0.1db stepping |
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MER |
≥ 42db |
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Non-linear DPD |
over 10db ACPR improvement (normally) |
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Linear DPD |
over 10db non-flatness adjustment(normally) |
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System |
LCD/ keyboard operation, SNMP management |
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Software upgrading through network |
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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; AC 220V±10%，50/60Hz |
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Power Consumption |
25W |
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