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mpeg2 HD encoder modulator
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Product Details
Place of Origin: | Sichuan, China | Brand Name: | DEXIN | Model Number: | NDS3542 |
Product Description
Specifications
2 channel A/ in, 1*ASI inMPEG2 HD/MPEG4 HD video encoding
2*RF DVB-T out (2 carriers combined output)
NDS3542 MPEG2 HD/MPEG4 HD Encoder Modulator
Product overview
NDS3542 is DEXIN’s newly developed Encoder & Modulator which integrates MPEG2 HD/MPEG4 HD video encoding and DVB-T (DVB-C/ISDB-T/ATSC Optional) modulation to convert HD A/V signals to DVB-T RF out in the frequency range of 30~960MHz. It has equipped with 2 channels of HDMI input, 1 ASI input, and output with 2 ASI ports, 1 UDP IP port, and 1 RF port with dual DVB-T carriers.
The signals source could be from satellite receivers, closed-circuit television cameras, Blue-ray players, and antenna etc. Its output signal is to be received by DVB-T standard TV sets, DVB-T STBs and etc.
The device can be wildly used in public places such as metro, market hall, theatre, hotel, resort, etc for advertising. It also can be used for monitoring, training and educating in company, schools, campuses, hospital… besides that it’s a good choice for bars to offer HD sports channels, for VIP entertainment channels, and more.
Key Features
Up to 1920*1080@50I/60I supported
MPEG2 HD/MPEG4 HD video encoding
2* HDMI in (2 for backup), 1*ASI in
2*RF DVB-T out (2 carriers combined output), double output bandwidth
Simultaneously encoding each channel more than 18Mbps
LCN support (Logical Channel Number)
Excellent modulation quality MER≥42dB
RF Frequency range 30Mhz~960Mhz
LCD display, Remote control and firmware
Updates via web/Ethernet
Lowest cost per channel --- breakthrough price
Principle chart
Specification
Encoding section
Video
Encoding | MPEG2 HD/MPEG4 HD |
Input | HDMI*2 (2 for backup) |
Resolution | 1920*1080_60i, 1920*1080_50i, 1280*720_60p, 1280*720_50P |
Audio
encoding | MPEG1 Layer II, MPEG2-AAC, MPEG4-AAC |
Sample rate | 48KHz |
Bit rate | 64kbps, 96kbps,128kbps, 192kbps, 256kbps, 320kbps |
DVB-T modulator section
Standard | EN300744 |
FFT mode | 2K, 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 |
MER | ≥42dB |
RF frequency | 30~960MHz, 1KHz step |
RF out | 2*RF COFDM DVB-T out (2 carriers combined output); Double output bandwidth |
RF output level | -30~ -10dbm (81~97 dbµV), 0.1db step |
System
Local interface | LCD + control buttons |
Remote management | Web NMS |
output | ASI out (BNC type); IP out (RJ45, 100M) |
NMS interface | RJ45, 100M |
Language | English |
General
Power supply | AC 100V~240V |
Dimensions | 482*300*44mm |
Weight | 4.5 kgs |
Operation temperature | 0~45°C |
Why do we need 2 x DVB-T carrier output in one device?
Firstly, it is to guarantee the sound picture quality of HD programs.
As we all know, to guarantee the picture quality of 1920x1080@50I/60I resolution HD program, the video bit-rate may exceed 15Mbps, even up to 16-18Mbps. However, the maximum possible bit-rate output for single DVB-T carrier is only around 30Mbps.
18Mbps x2 =36Mbps > 30Mbps.
It means the single DVB-T carrier simply can't carry the 2 channels 1080i HD program if the average bit-rate exceeds 15Mbps.
That's why we design 2*DVB-T carrier modulation board which double the maximum possible bit-rate bandwidth up to 60Mbps, which rightly makes it reliably carry 2 channel HD programs output simultaneously.
Below brief chart will help to more clearly illustrate the working principle.
Secondly, it is cost-saving.
Its high integration allows users to transmit more programs with fewer devices. It undoubtedly saves the cost for you and me.
Contact Us
- Dexin Digital Technology Corp. Ltd. (Chengdu)
- Contact namedaisy Lee
- Phone86-28-85558928 85550524
- AddressNo.10 & No.12, Wuxing Fourth Road, Wuhou District, Chengdu, China Chengdu,Sichuan
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