Calmly If there are now TV circle can be fever, futzing with things, there are at least two major themes of great significance: First, high-definition digital satellite television, satellite television is another shared, the former due to the source and receiver satellite programs cost the restrictions, it was not possible large area popular in a short time, and then blossom everywhere satellite television sharing, as long as the Internet exists, as long as it can receive satellite TV, it will have to survive the market. And in this area, now is the most fiery playing dreambox 500s of the figures. In fact dreambox 500s  long time ago, because of the high prices, few people are built and only a handful of enthusiasts as the hands of the plaything. , - C Digital TV with cable, and - T terrestrial digital TV is dedicated machine. dreambox 500s  in hardware can be considered DM7000S simplified version, after the panel reduced the number of input-output interface, the CI module removed part of the front panel display, an external power supply, eliminating the machines hard disk interface All this makes dreambox 500s  the much smaller, but functionally it is also no ambiguity, operating more humane, more powerful. dreambox 500s  digital machine is very compact size, appearance size of only 195 mm ¡Á 130 mm ¡Á 40 mm, if you said this figure is not so sensitive, perhaps will be able to illustrate the problem. Four of the most common figures stacked together, the more easily seen: the bottom is the one we are familiar with the route Section 410, it is the X910 machines above (Section 410 of the flights operated exactly the same interface fact is the 430's traverse, 788 X machines combination of the shell), which is the most common 788 X machines shell, then the above mean that we will be introduced by the DM500S, of course, the smallest, which is the top that Taiwan HE-986 micro-digital receiver has. From another perspective, the response to the size of this machine, DM-500S than half of flights to Section 410 of the small, and Kinpo HE-986 even smaller. This compact volume, why functional so strong, many TV buffs by the recovery rods, and now become the most popular machines? We might as well look at the website of the lawsuit, given this machine: the machine using 250 MHz IBN PowerPC processor (350 Mips), the Linux operating system, with a reader, MPEG2 hardware decompression, DVB-S, V. 24 / RS232 interface, 100 Mbit two-way Ethernet interface and two LED instructions, an infinite number of TV / radio channel list, channel conversion time of less than one second, fully-automated service scanning, EPG (EPG), support DisEqc, multi-language menu, digital bitstream output SPDI / F interface (AC-3/DTS), a subject to the control software interpolation Scart output district. There are some other technical indicators here is not an exhaustive list, all digital satellite receiver now due conventional function of the machines are in place, but is also of conventional machines do not have the power of a word, dreambox 500s  built-in Linux computer operating system is a computer with a satellite receiver machine, DM500 and 1020 PC Card almost, but functional and powerful than the 1020 cards a lot. 1020 cards are soft unpacked, and the machine is hard decompression, support multi-multi-server systems to share, do not change system, and do not need CV12, all software installed. The system can be shared with Seca, Viaccess, Irdeto, Viasat - NDS, Conax, Nagra1, Nagra2 etc., while supporting a variety of encryption systems Genuine card authorization. The card can be inserted ordinary decryption can also network with CV12 the same through sharing software declassified. Support for multi-satellite receiver, of course, picture quality than 430 such machines good. Other features also, through the network can be connected to a computer booking video. Not only can be connected to TV watching, and through computer network lines in the same frequency LAN players. Open operating system, powerful, fun high, more suitable for TV, computer amphibious fans futzing. Along with the development of various types of plug-in succession, the machine can achieve more practical function. We turn first to understand what this dream box hardware facilities it.
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In fact, said to really thank the domestic OEM manufacturers, makes this a few thousand dollars worth of machinery, ordinary people can take to the 200 USD price, the ordinary TV fans will also have an opportunity to view the crew style, although now domestic copied version of this aircraft manufacturers as many as a dozen homes, but still the same basic appearance, mostly imitation of the original product appearance and the other is the larger machine, the receiver will soon be in power, but the appearance of rare. As manufacturers, there are now prices continued a downward trend, of course, will be increasingly difficult to guarantee quality,this was first copy version, which also mention what is authentic products, but one thing is certain , which is the first domestic version dreambox 500s the copy quality product is the best, I was fortunate enough to get the machine because it is. dreambox 500s the overpack is very delicate, very small, except inside a mainframe and the remote control, while the rest of the annex is an external switching power supply and a thick layer of the specification. Mainframe appearance, we have said earlier, dreambox 500s size is very small, very exquisite workmanship appearance, except for the plastic front panel material, while the rest are forming stamping the plate frames, on the hands of a certain weight, but relative to their size, unit is not more than 0.6 kg. The overall appearance of a silver-gray, and the front panel is white and silver gray-and streamlined design, coordination and natural looks, it seems far-reaching significance is so unpredictable and ever, because it is very similar to a logo. On the left is the dreambox multimedia LOGO, the following is the specific type logo, the right is a decryption card slots. Right panels relative brevity, only a standby button, the small window there are two LED indicators, namely green power a less remote control instructions, the standby light is red, so concise. DM500S the panel after the same simple: IF into a two-port, but with other machines is the difference between these two LNB interface of the two, is from the back to the board is to highlight the fact, it was said that according to this point , can be judged machines using the PHILIPS (Philips) LNB, the first such high-frequency models is the most used SU1278/LH2 the LNB if it is exported directly ALPS (Alps) Electrical Manufacturing Co., Ltd. of Chinese companies LNB, products mostly models BSBE1 - 702A of LNB, I only have this one,no record this According to the authenticity, but the use of this machine is really the integration of Philips tuner. In a group of the above AV output port is a RS232 serial port, mainly for the software upgrade. different audio and video signal is displayed! The right turn is in digital audio output fiber, 12 V DC power outlets and network line jack. The silvery white with the remote control and host of very good, high sensitivity, feel comfortable. Key design very much in line with people in the use of habit, the program will be used, the volume on the median, and is most likely to touch on the thumb, giving great convenience to users, the remote control work is not bad, I had to admire the domestic imitation capacity. The allocation of power for the switching power supply can be 100 ~ 240 V under normal work, work is quite good, and adopted the CE, such as UL certification, quality is assured, although the nominal power of the small 10 W, 12V/1A Electricity has been enough, but for insurance purposes, for 12 V/2A power can provide more abundant energy, greater use of the stability of the unit. This machine attached a thick manuals of the 32 open, and is also unique in the country, there are very detailed instructions. In the back of the machine, there are a white label, there are four elements: 1, machine name; 2, barcode; 3, machines only S / N of 4, machine card, the only MAC. We have to look at the barcode and S / N, and the MAC, S / N of the box with the overpack bags, and power counterparts, because each machine is different, or to use computers to see DM500S MAC card, whether displayed on the computer with a few stickers and other positions are 1 point 1, these points is to determine whether or not you buy the machine is a machine complete package approach. The DM500 used mechanism steel to the electromagnetic shielding of good, and the external switching power supply using DC power supply, the use of the flexibility has been greatly strengthened, and further reduction of electromagnetic interference is conducive to the improvement of picture quality and increase , of course, for the long-term and stable work machines also play a role. It is precisely because of the external power supply and the reduction of hardware, makes the machine to further reduce the size,open as the whole machine is within a block circuit boards, and even at the card also done directly in the motherboard, Pai line through the link with the outside world only two, one is the front panel, another is behind the escalation of serial board, in fact these two places are no specific circuits, which are external mouth, such as the front panel that is a power LED and two standby button, the remote control receiver first few connections, we can see that the integration of this machine are very high, in order to allow you to see more clearly, we will remove the two lines inserted row, and front panel after panel and the baffle removed, we can see the full picture of the entire circuit boards, circuit boards and on the reverse side there are no other devices, circuit board positive structured, the management function block boundary clear. To tie in with the dreambox 500s machine tests, giving them a better view of this machine face and internal structure, I have digital cameras for the fifth time upgrades, the purchase of a 10 million pixel CCD digital camera, will be the most minor details to show you. Motherboard most striking of largest IC PowerPC, which is the soul of the machine. This IC features, the PowerPC is Performance Opimization With Enhanced RISC Performance Computiong acronym, International Business Machines Corp. IBN devoted to the dedicated digital TV decoder chips, chip tagging Digital SetTop Box Intergrated Controller, Italy for the management of digital set-top boxes dedicated chips. In the most chips can be seen beneath the specific models of the chip; IBM39 STB02500 PBA 05CA. IBM STB02500 single decoder chip is a PowerPC 405 processor. The PowerPC 405 is a high-performance, low-power CPU, the power consumption of less than 1 W, embedded a MPEG2 decompression chips, work speeds up to 252 MHz, the core is a 32-bit RISC CPU, the computation speed of 350 MIPS. These messages can be machine software from internal information displayed. It is said that there are two versions of this chip, or two Korea and Taiwan origin, the machine is the TA / WAN manufactured. Such a high frequency decoder chips for digital satellite receiver rare, the use of BGA Packaging computer chips for digital machine also rarely see, and we see is the SC2005 series chip, with performance the main chip so superior, of course, the quality of this machine are guaranteed. Motherboard another course, is a body of the tuner, we have said before,
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The machine used in high-frequency PHILIPS first, model is SU1278/LH2, this brand in the digital machine is relatively rare, integrated tuner quality of the merits, the decision to the overall quality and performance, because it is digital the first portal receiver, the actual use of that deserves to be PHILIPS brand, performance is very stable, relatively low threshold, the only shortcomings of the heat slightly larger, perhaps with their smaller size of the chassis, cooling Performance is obviously smaller than the chassis, everything that is both an advantage there must be a disadvantage. The plane's two motherboard memory is used Hyundai brand, which is playing computer is not strange friends, and in fact it on the computer memory of the same, including a 16 M x 16 SDRAM, another film 8 M ¡Á 16 SDRAM, a 16 M for the system, another film 8 M for decoding. Memory chips Read a small IC, Model SP3243EEA is that the United States Sipex Corporation RS-232 dedicated interface circuit. Above the main PowerPC chip IC also one we have not said that this is the machine FLASH chip, 8 MB of flash memory, model is TE28F6 40, is based on Intel's products. This machine the left is the IC card interface chip, model is AX88796L is Taiwan ASIX Company introduced NE2000 compatible with Fast Ethernet controller, its internal integration have 10/100 Mb / s adaptive physical level transceiver , and 8 K x 16 SRAM. Note that in this chip and¿¨×ùbetween, there are three micro-LED patch, D5, D6 and D7, which is not peacetime luminous, and only line will be inserted into the network interface card in the machine, which the D6 and D7 will be normal given green light, and this shows that the Internet is connected to normal, if the LAN installed correctly inside the aircraft, the plane that is as a computer terminal access network, then D5 will be flashes that even within the network and transceiver, communications normal. The motherboard also has an LED light the patch, which is in the integration of Philips tuner on the left side, labeling for the D72, this LED is luminous in peacetime, and search in the normal reception when luminescence, Internet and luminous intensity of the light is less than specific purposes is not yet clear, and the signal may be related to the instructions now in further observation, perhaps at the end of this paper will answer. Worth mentioning is that the audio part of this machine, this machine's audio D / A converter is used WOLFSON brand WM8761GED, this chip is 14 pin SOIC package, the power supply voltage of 2.7 to 5.5 V, power of 66 mW dissipation. Wolfson (Wolfson) is headquartered in the United Kingdom. Edinburgh, online and digital signal processing technology developed rapidly, the results can be applied to different audio products, such as PC, PDA, CD, DVD, Digital Set-top-boxes, digital television, MP3 machine, professional audio equipment, known as audio decoding experts, and their branches worldwide. WM8761 is a high-quality 24 - bit/192 kHz Stereo DAC, - 100dB SNR ( 'A'weighted @ 48 kHz), - 90dB THD, DAC Sampling Fr equency: 8 kHz - 192 kHz, we can see that technology is a very good indicator, we had a motorized audio digital machine parts used PCM1716E, only 24 - bit/96 kHz it, we can see that the machine's audio, it was an indicator, of course, the machine's audio, it was an indicator, of course, the fiber of this machine more audio output provided the original code output, if an external decoder can enjoy the Natural sound digital audio broadcast or the. This machine used DC 12 V power supply, as the number of machines required multiple voltage, obviously there must be corresponding DC-DC boost or buck circuit. This machine power is partly based on Linear Technology, Inc. Model for the LT1940EFE buck switching regulators, the chip has a wide input voltage range, dual-channel, single-chip 1.4 A, 1.1 MHz switching frequency, level after using the multi-level inductance filtering, effectively reduces the power supply ripple and ensure the stability of the overall electricity supply. Finally we will look at the motherboard of the various output, input jack, from left to right are: IF IF input and output, AV output port, the EU inserted a variety of signal output, optical digital audio output, 12 V DC input (in the negative is), net line input socket. Above us briefly taste of what the hardware facilities of the machine, we can see that this machine volume is small, but the basic hardware configuration is a powerful, in fact dreambox 500s is the Linux operating system containing a computer, as powerful, open style system variety of plug-in and annex makes aircraft playability greatly enhanced, as many of the burned mates want to futzing with a machine, but there is one thing that we must pay attention to, that is if we want to play well this machine, must possess the necessary computer knowledge and operation skills, and can tie in with the use in the computer, otherwise it might give you the feeling seems to be a common than the figures for ease of use. Well, I should like first of the machine operation to have an initial menu awareness accept a satellite on the first Look at the program. The first AV output of the machine and television set AV input connector, and despite the interpolation of a European signal output, but there are television sets in the country imported European interpolation is minimal, and now a TV are any there AV input. Then external 12 V power supply is connected with the correct outdoor antenna with the crew after the LNB IN connection (preferably has outdoor antenna at a certain satellites, presumably to buy DM500S friends not only have to possess a satellite receiver antenna it), the open receiver power, it is the screen and writes a boot to ensure that you have never seen, red, yellow, white and blue colored with a coordinated, and the machine at the time of purchase, dealers have their brush - the Chinese version (now already purchased the Chinese version is, of course, also an English menu operation optional), if your machine is more than the English language version, you can also brush into Chinese version, the specific methods we have described in detail behind. What we are seeing now is the final boot screen, the screen actually appeared twice, "did not find the service provider" hints that did not receive the signal. Because of this machine with Linux operating system, as compared with ordinary digital machine started some time longer, about 10 seconds to enter to receive images, and other machinery This is a great distinction. According to the menu on the remote control button, the machine has the main menu,ÓÖûseen ways bar, with icons above, the language used to illustrate below, and it includes eight items: TV mode, broadcasting model, the paper model, VCRs, timing, setup, information, shutdown, the default mode is television. About direction keys can be used to cycle switch, we first entered the paragraph (6) page - set up by OK button to confirm set up after entering the main menu, the menu now is we have compared the entry of a habit, then selected system setup, move on to the next layer of sub-menu. In the Setup menu system, we carried out the first major time setup and OSD settings and language set up. In time the Setup menu includes two, and immediately set the time zone correction in the time zone settings course, we have to choose GMT +8 Beijing, Chongqing, a Hong Kong; time correction menu is actually re-set the time machine This is mainly behind the timing for video services. OSD language in the project, only two options, Chinese and English, of course, to choose Chinese, and if the other versions, the language may be a lot of options, but also has a very small image of the national flag logo. In OSD settings, there are a number of functions is also very practical: The first is the transparency of regulation menu, the default is opaque can, of course, according to their own preferences, and regulating different transparency, but also on the menu to adjust brightness and contrast , can see distinct differences between it. Forget all the items adjusted, should be carried out "Save" and preserve There are two ways, one is moved to preserve cursor buttons will be on OK confirmed that another directly from the green on the remote control button, directly preservation and after withdrawal from the interface, using the remote control of the four multi-function keys, you can quickly complete a number of operations in different menu color keys have different functions, even if not under the menu, the color keys also have meaning Shortcut keys. This menu can also be used for other operations, such as changes in the menu structure of the arrangement, change the menu appearance (skin), and adjustments to the teletext center position, which we in the future will be mentioned in the letter. The next phase will introduce the multi-satellite receiver for the establishment, as well as their own names to order Chinese program, the machine multiple video output settings for the interface skin after another will bring you the feeling of the new.