مدولاتور (DVB-T(DVB-C

مدولاتور (DVB-T(DVB-C یک دستگاه با کارایی بسیار بالا و مقرون به صرفه است . دارای 12 ورودی DVB و 128 IP بر روی UDP میباشد

Outline

This is a high performance and cost-effective DVB-T (DVB-C optional) modulator designed by Dexin. It supports DVB-S2 (DVB-(T) optional) tuner inputs, after multiplexing, scrambling (only for DVB-C) and modulating process, then it gives 4 RF output. To meet customers’ various requirements, this device is also equipped with 128 IP input and 4 MPTS output over UDP and RTP. Its pluggable structure design greatly facilitates the change of modules as needed. Moreover, NDS3348TS (NDS3348CS) can support Biss descrambling and can be upgraded and controlled through network system, which allows it to be widely used in setting up digital broadcasting network and provide good signals for scientific laboratory and DVB-T STB.

 

Features

* 12 DVB-S2 FTA Tuner input ports---Version I
* 12 DVB-(T) Tuner input ports---Version II
* 8 DVB-S2 FTA tuner+ 4 DVB-(T) tuner input---Version III
* 8 DVB-(T) FTA tuner+4 DVB-S2 tuner input---Version IV
* Support maximum 128 IP input(MPTS/SPTS) over UDP and RTP protocol
* Support Biss descrambling
* Support 4 groups multiplexing +4 groups DVB-T modulating----NDS3348TS
* Support 4 groups multiplexing +4 groups Scrambling+ 4 DVB-C modulating----NDS3348CS
* 4*DVB-T/C carrier output and 4 IP (MPTS) output over UDP and RTP protocol
* Integrated demodulating and multiplexing functions
* Support accurate PCR adjusting
* Support A/V PID filtering (for NDS3348TS), PID remapping
* Support PSI/SI rebuilding and editing
* Web-based NMS management

DVB-T Principle Chart

Specifications

Input

12 DVB-S2 FTA Tuner input ports---Version I

12 DVB-T2 Tuner input ports---Version II

8 DVB-S2 FTA tuner+ 4 DVB-T2 tuner input---Version III

8 DVB-T2 FTA tuner+4 DVB-S2 tuner input---Version IV

128 IP(SPTS/MPTS) input over UDP and RTP, RJ45, 1000M/100M  Unicast/Multicast         

Tuner Section

DVB-S

Input Frequency

950-2150MHz

Symbol rate

2-45Msps

Signal Strength

-65~-25dBm

FEC Demodulation

1/2, 2/3, 3/4, 5/6, 7/8 QPSK

DVB-S2

Input Frequency

950-2150MHz

Symbol rate

QPSK 1~45Mbauds; 8PSK 2~30Mbauds

Code rate

1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10

Constellation

QPSK, 8PSK

DVB-T/(T)

Input Frequency

30MHz ~999.999 MHz

Bandwidth

6M, 7M, 8M

BISS descrambling

Mode 1, Mode E (Up to 850Mbps) (descramble individual program)

Multiplexing

Maximum PID Remapping

256 per input channel

Function

PID remapping

A/V PID filtering (for NDS3348TS)

Accurate PCR adjusting

Generate PSI/SI table automatically

Modulation

DVB-T

Standard

EN300744

FFT mode

2K,

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

MER

≥42 dB

RF frequency

50~960MHz, 1KHz step

RF out

4*DVB-T adjacent carriers combined output, 40M total bandwidth limitation

RF output level

-28~ -3 dBm (79~105 dbµV), 0.1db step

DVB-C

 

Standard

J.83A (DVB-C), J.83B,

MER

≥43dB

RF frequency

50~960MHz, 1KHz step

RF output level

-25~ -1dbm (82~106 dbµV), 0.1db step

Symbol rate

5.000~7.000Msps adjustable

RF Out

4*DVB-C adjacent carriers combined output, 40M total bandwidth limitation

 

J.83A

J.83B

Constellation

16/32/64/128/ 256 QAM

64/ 256 QAM

Bandwidth

8M

6M

Stream out

4*MPTS over UDP and RTP out , RJ45, 1000M/100M, Unicast/Multicast

System

web-based NMS support

Ethernet software upgrading

General

Dimension

(W*D*H)

482mm×300mm×44.5mm

Temperature

0~45℃(Operation) ; -20~80℃(Storage)

Power

AC 100V±1050/60Hz; AC 220V±10%, 50/60HZ

           

 

 

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