DreamBox 800HD PVR (Satellite Receiver)--Functions and Information

Product Description:

Dreambox 800 HD Satellite Receiver is he LATEST in the Dreambox series.  It is the first Linux receiver to have High definition and hard drive capability. Powerful receiver for digital TV and Radio programs is its best description.

Main features are a 300 MHz processor the Dreambox DM800 supports the Linux TV API have a look to high definition TV on your Dreambox 10/100MBit compatible Ethernet Interface DVI connector plug & play Tuner brilliant OLED display SATA for use either as internal HDD 2, 5" or eSATA.

DreamBox DM800 technical data

DBS-Tuner mit DVB-S2: Frequency Range 950.... 2150 MHz; Demodulation DVB-S (QPSK); DVB-S2 (8PSK, QPSK); Symbol rate DVB-S: 2 ... 45 Mbaud/s, SCPC/ MCPC; DVB-S2: 10 - 31 Mbaud/s (8PSK), 10 ý30 Mbaud/s (QPSK)

Video decoder: Video Compression MPEG-2 and MPEG-1 compatible, H.246; Video Formats 4:3 / 16:9; Letterbox for 4:3 TV-Devices

Audio decoder: Audio compression MPEG-1 & MPEG-2 Layer I and II, MP3; Audio Mode Dual (main/sub), Stereo; Frequency: 32 kHz, 44.1 kHz, 48 kHz, 16 kHz, 22.05 kHz, 24 kHz.

Output analog: Output Level L/R 0, 5 Vss on 600 Ohm; THD > 60 dB (1 kHz); Crosstalk < -65 dB;

Output digital: Output Level 0, 5 Vss on 75 Ohm; Sampled Data Filtering 32 kHz, 44.1 kHz, 48 kHz; S/PDIF-Output optical, To slink

Ausgang Video: Ausgang Siegel FBAS 1 Vss +/- 0.3 dB and 75 Ohm

Video parameter: Input Level FBAS 1 Vss +/- 0.3 dB on 75 Ohm; Teletext filter in conformity with ETS 300 472 Standard.

TV-Scart: Output: FBAS, RGB, S-Video

Serielle Interface RS 232: Type RS232 bidirectional; Bit rate 115, 2 kBit/s max. Plug Connector SUB-D-9; Function: Update of Firmware

Ethernet: 10/100 MBit compatible interface; Function: Update of Firmware

Analogue modem: analogue modem for Internet connection

SATA Interface: for use either as internal HDD 2,5ý or eSATAor internal 2, 5" HDD

USB 2 x USB 2.0 Host

LNB power and polarisation per tuner: LNB Current 500mA max.; short-circuit-protected; LNB Voltage vertical < 14V no load, > 11,5V at 400mA; LNB Voltage horizontal < 20V no load, > 17,3V at 400mA

Every kind of Dreambox product is the show of elegant.

Super competition of many types of IMG of Dreambox800HD

Since DM800 HD receiver for the progressive use of domestic users has opened, then starting from this issue, described the methods of details as a high-definition multimedia receiver DM800 its various system software (IMG) of the various functions and various plug-in installation.

The latest version is announced at March 16, 2009 launch of NABILO BLACK HOLE_DM800_09_linux-sat_mod_20090316 (referred to as NABILO V0.9 LINUX) version.

  

NABILO V0.9 LINUX solved problems of NABILO V0.9 version of the page that can not enter WEBCONTROL control. WEBCONTROL control version of the page using 1.5BETA3 than GEMINI2-410 used to record 1.5BETA2 version adds shortcut keys.

  

NABILO V0.9 LINUX IMG luxury feature is the interface to a black background display OSD interface, unique features as the name "BLACK HOLE" (black hole). The four colors on the remote control adjustable from a number of shortcut keys, so user is very convenient. In addition, NABILO V0.9 LINUX package also supports playback of H.264 and DIVX7 AVI video files. However, this film has a BUG, not for [SETUP] - [SYSTEM] system of A / V set, or automatically restarts the machine. In addition, the default skin does not support currently provided by the Chinese font, IMG did not provide other skins, either.

Program information bar can be displayed to be the image resolution and signal quality decibel value. It is regrettable that the resolution adopted dark font, it is shown to identify what is not clear. IMG built from select skin "NEWNIGMA2SKIN.NEW" skin replacement, but no resolution display, it needs to be given to improve the follow-up versions. However, article in the program information EPG, CA information function well.

In spite of the super competition, all products are excellent.

Functions of Dreambox800HD Subtitles

V C-band Asia recently added National Geographic HD channel family adventure series. They are free broadcasts. And the receiver parameters are: 100. 5 E 3980 V 29720 DVBS2 8P-5 / 6 MPEG4 HD, high definition TV to the downturn in space fever energized.

The set of parameters from the code symbol rate is used in large view, the new channel will be added very soon, interested attention to the frequency of stars of Friends as possible. Open during the test also may temporarily need to appreciate those who have watched the cost of expensive high-definition programming. Although the station logo Adventure Channel HD marked the end of words, the program is not a standard 16:9 screen. The resolution is just strange: 1440X1080.

As the channel is transmitted in Asia, 5 satellites, there will be hidden Chinese subtitles. View from a variety of receivers to the program is also contained information on Chinese subtitles; From DM800 HD-440 version cannot break out.

We consider that, as in the previous version of DM800 HD support for a variety of titles is quite perfect.

  

Unfortunately, the program is down, GEMINI-410 version of the Asian V of the National Geographic Adventure HD channels or not it can show subtitles.

 

Continued brush 420,460 subtitles can all not break out, and finally they had to brush back to the 440 version, look! There were originally Celestial subtitles can not appear.

 

There are a lot of horse satellite channel information included subtitles, like unlocking a few months, "Celestial Classic Movies," and so on, but most programs have to be DVBS2,

Even with 8PSK-30000 to spread the great symbol rate. It brings up the low version of the subtitles, but they can not support more than 30,000 head symbol rate of the high-frequency drivers;

Summary of the above, feel DM800 HD version is currently no perfect, at least not used. Lower version in the subtitles function well.

For more than 30,000 large DVBS2 symbol rate can not support. And there is something lacking in the high version and in some detail. Therefore, many DM800 HD users often result in the course of a number of illusions, and even that is not so and so DM800 HD.

Dreambox 800 plug-ins in China

This article describes the replacement of Chinese font, font size, edit the plug, black plug, and HD plug-in system information skin 4 plug-ins to use:

Chinese font replacement:
General DM800 IMG Chinese version of the machine using the default Microsoft elegant black Chinese character, used to seeing such a font for the user, may wish to change the font another try. The so-called Chinese character change is to replace “usr / share / fonts” folder in the “nmsbd.ttf” file. But it manually for some beginners may have some technical difficulties, such as Chinese vector font search, replace, the font can't display the problem.

Editing plug-in font size:
DM800 skin replacement users always feel some skin slightly larger font, display the "mangled" feeling, while others have skin the font is too small to see very clearly. While we can in the skin “skin.xml” file, on the "scale (scale)" parameter to edit, but can only is unified zoom in or out. The font size can easily edit the plug-in will be EPG, channel lists, recording list, and information display reads the font size of each column with different settings.

Black plug:
Black screen plug-in is a very simple but very useful little plug-in, capacity is only 3.1 kB. When the user by using the DM800 machine, plasma TV or listen to TV audio broadcasts, in order to prevent plasma TV screen while still playing for a long time to bring blur, enable the plug-in will automatically appear as a blank TV screen, it will not only reduce the TV machine power, but also extend the life of the display.

HD plug-skin System Information:
HD is skin system information plug-in for high-definition machines under the skin of the plug-in parameter display all kinds of information can be quickly and easily display memory usage, CPU usage, and hard disk remaining capacity, hard disk operating temperature, the system process and other system operating parameters.

Knowledge of Digital TV dream box software

After the digital television, digital television technology in the software technology plays a more important position. In addition to audio and video hardware decoding from the outside, including television content, reproduce, interface implementation, data broadcasting services for implementation, until the dream box and personal computers and Internet connectivity and the Internet are required to implement by software, as follows: a hardware driver layer software: Drivers drive hardware features, such as radio frequency demodulator, demultiplexer transmission, A / V decoder, OSD, the video encoder.

Embedded real-time multitasking operating system: embedded real-time operating system is relative to the desktop computer operating systems, it is not installed on the hard drive, the system compact and relatively simple functions, resources, and open capital small, easy to cure in the memory in.

The role of embedded operating systems and PC-DOS and Windows on a similar man-machine dialogue through which the user, the user assigned to complete the designated. A number of ways to design a receiver, such as: keyboard, mouse, voice, touch screen, infrared remote control.

Middleware: open service platform is characterized by product development and production of a business platform based on open service platform for every aspect of independent operation mode, each link has its own profits, can produce more suppliers. Only an open dream box business platform to ensure scalability, to ensure the effective recovery of investment.

Upper layer application software: implementation of service providers and service functions, such as: electronic program guide, near video on demand, video on demand, data broadcasting, IP phones and video phones. Upper layer application software is independent of the STB hardware, which can be used for a variety of STB hardware platform, eliminating the dependence on hardware applications.