Discription
The 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 2 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
Fully complying with DVB-T standard (EN300744)
Both SFN and MFN support
Transfer mode 2k, 4k, 8k optional
Hierarchy modulation Alpha1, 2 and 4 optional
Transfer bandwidth 6M, 7M and 8M optional
Supporting linear and non-linear correction
Excellent phase noise and MER performance, MER ≥40db
RF output range 110~860MHz, 1hz step
Two ASI inputs supporting hot backup
Constant temperature crystal oscillator, frequency stability is high up to 0.1ppm
Full-size front panel LCD display and keyboard, NMS management.
Specifications
Input |
2 channels ASI input, hot backup, BNC port |
GPS 10Mhz reference clock input, BNC port |
GPS 1PPS input, BNC port |
Modulation |
standard |
EN304 744 |
FFT |
2K,4K,8K |
bandwidth |
6M,7M,8M |
constellation |
QPSK,16QAM,64QAM |
Guard interval |
1/4,1/8,1/16,1/32 |
FEC |
1/2,2/3,3/4,5/6,7/8 |
Hierarchy modulation |
Alpha=1,2,4 |
RF output |
ASI loop out |
2channels ASI loop out, BNC port |
interface |
N type, 50Ω impedance |
RF range |
110~860MHz,1hz step |
ATT |
-16dbm~0dbm,0.5db step |
MER |
≥ 40db |
Linear pre-correction |
Correction points |
16 |
Non-linear pre-correction |
Correction points |
256 |
System |
Full-size front panel LCD display and keyboard, NMS management |
Software upgrading |
General |
Demission (W*L*H) |
482mm×455mm×44.5mm |
Weight |
4.9kg |
Temperature |
0~45°C(operation),-20~80°C(storage) |
Power supply |
AC 110V±10%,50/60Hz or AC 220V±10%,50/60Hz |
Consumption |
28.6W |