Brand DREAMBOX Model DM 500S
Product Type DM500S receiver channel 3000
The number of memory 1500 (a)
Power 3 (W)
Power a place of origin
Complete material configuration
Supply voltage 110-240 (V)
Features:
- 250 MHz IBM PowerPC Processor (350 Mips)
- Linux Operating System
- 1 card reader
- MPEG2 Hardware decoding
- DVB-S
- V.24/RS232 Interface
- 100Mbit full duplex Ethernet Interface
- 2 LED instructions
- Unlimited number of TV / Radio channel list
- Channel switching time less than 1 second
- Full automatic service scan
- EPG (Electronic Program Guide)
- Support for DiSEqC
- Multilingual
- Digital bit stream output of the SPDI / F Interface (AC-3 / DTS)
- 1 x Scart-(software control)
Technical parameters:
IF Input :950-2150 MHz
Signal Level - 65 dBm .... - 25 dBm
SNR of 12 dB maximum.
F Type female
Input Impedance 75 Ohm
AFC + / - 3 MHz
QPSK
Input Symbol rate 2 .... 45 M, SCPC / MCPC
Error correction 1 / 2, 2 / 3, 3 / 4, 5 / 6, 7 / 8, automatic
Video Decoder:
MPEG-2, and MPEG-1 compatible
PAL G / 25 Hz standard
Video ratio 4:3 / 16:9 (automatic)
Audio Decoder:
MPEG-1 & MPEG-2 Layer I / II
Stereo
Frequency: 32 kHz, 44.1 kHz, 48 kHz, 16 kHz, 22.05 kHz, 24 kHz
Analog output:
Output Level L / R 0,5 Vss 600 ohms
THD> 60 dB (1 kHz)
Isolation <-65 dB
Digital output:
Output Level 0,5 Vss 75 Ohm
Sampling digital filter 32 kHz, 44.1 kHz, 48 kHz
S/PDIF- optical output (AC3)
Video parameters:
Enter FBAS 1 Vss + / - 0.3 dB on 75 Ohm
Teletext filter: ETS 300 472 standard
Scart:
Output: FBAS, RGB, S-VHS
RS 232 interface:
Bit rate 115,2 kBit / s maximum.
Plug SUB-D-9
Firmware Upgrade
Ethernet port:
Ethernet port to upgrade firmware
LNB power and polarization:
LNB Current 500mA maximum. Short-circuit protection
Vertical polarization LNB voltage <14V without load,> 11.5V (400mA)
Horizontal polarization LNB voltage <20V without load,> 17,3 V (400mA)
LNB power down standby
Receiver control:
DiSEqC 1.0/1.2 SAT location / SAT Select
DiSEqC - Motor Control
Power consumption: <10W / 12V
Input Voltage:
DC12V, AC + / - 15%
External Power:
Input :110-240V AC / 50-60Hz / 0,6 A
Output: 12V = / 1A
Physical Specifications:
Temperature of +15 ° C. .. +35 ° C
Humidity <80%
Dimensions (W x D x H): 195 mm x 130 mm x 40 mm
Weight: 0.6 kg
DM500S operation Xiangjie
DREAM BOX DM500-S has long before, due to high prices, then very few people interested, but as a plaything in the hands of a handful of enthusiasts. Dream Multimedia TV company, is a DREAM BOX (Dream Box) series machine manufacturer, our model has common DM 7000S, 7025S, 8000S, etc., in fact, they are only one among the same model series products, the suffix-S for the use of satellite digital television ,-C for digital cable TV, and-T is a terrestrial digital television special machine. Header map is DM-7000S and DM-500S picture together, the above is the DM-500S, following the machine is famous DM7000S. DM500S the hardware can be seen as a simplified version of DM7000S reduce the rear panel of the number of input and output interfaces, remove the CI module part of the display part of the front panel, external power supply, eliminating the need for the machine hard disk interface, all These are made DM500S volume greatly reduced, but functionally it is also no ambiguity, operation, more human, more powerful.
DM-500S digital machine is very compact size, appearance, measuring only 195 mm x 130 mm x 40 mm, if you were not so sensitive to this figure, Figure 1 may be able to illustrate the problem. Four of the most common digital machines stacked together, the more easily seen: the bottom one is the familiar navigation Section 410, above it is X910 machine (with Air Section 410 of the user interface is identical, In fact, the movement is the 430, 788X shell of a combination of machines), which is the most common shell 788X series of machines, then the above is what we would like to introduce DM500S, of course, the smallest, that is, it sets the top HE-986 micro digital receiver has. Figure 2 is a reaction from another perspective, the size of this machine, DM-500S than half of Air Section 410 is smaller, but Campbell HE-986 even less. Such a small size, why such a powerful, sought after by many TV enthusiasts, as well as now the most popular machines? We might have a look at the official website given this machine Description: This machine uses 250 MHz IBM PowerPC Processor (350 Mips), Linux operating system, with a card reader, MPEG2 Hardware decoding, DVB-S, V. 24/RS232 interfaces, 100Mbit full duplex Ethernet Interface, 2 LED instructions, unlimited number of TV / radio channel list, channel switching time of less than 1 second full automatic service scan, EPG (electronic program guide), support DiSEqC, multi-language menu, the digital bit stream output SPDI / F Interface (AC-3/DTS), 1 Scart become popular with software-controlled European plug output. There are other technical indicators are not here to list, all should now conventional satellite digital receiver functions, the machine is in place, and with conventional machines do not have the power, in short, DM500S built-in Linux computer operating system is a satellite receiver with a computer, DM500S with 1020 PC Card is almost, but functional and powerful than the 1020 card lot. 1020 cards are soft extract, while the machine is hard decompression, support for multi-system multi-server shared, do not change the system, without CV12, all software settings. System can be shared Seca, Viaccess, Irdeto, Viasat-NDS, Conax, Nagra1, Nagra2, etc., while supporting multiple encryption genuine card authorization system. Card can be inserted ordinary decryption, with the CV12 can be shared as a network decryption software. Support for multi-satellite reception, picture quality was certainly better than a good machine like 430. Other features include, a network connection can make an appointment with the computer recording. Not only connected to TV watching, and by cable in the LAN computer synchronized. Open operating system, powerful, easy to play, more suitable for TV, computer amphibious Shao You play with, but the use needs to be installed as DM500S satellite TV receiving antenna, your antenna is installed to control radio and television for approval, the current to that only enthusiasts for personal use, if the network transmission, is illegal. With the development of various types of plug-in succession, the machine can achieve more practical function.
DM500 very powerful true, but we use the DM500 the majority of the South small factory to counterfeit. This makes the DM500 quality of good and bad, until the emergence of Sunray 518. This situation changed only gradually. Sunray DM518 is a very practical machine. It simplifies the deck, Europe and interpolation functions which we do not have access to add the color component output mode, network changes and other useful features. Redesign the circuit board, to make the machine more stable. No longer appear sound, the screen is not synchronization. Will not be stuck in the situation of the screen. It can be said DM518 has a very perfect machine. Friends recommended star buy.
How DM500 find the satellite signal?
Novices often do not understand the elevation, azimuth, polarization angle and the definition of popular distress. Explain a little here, partial feed antenna is the parabolic part of the surface, if it is approximated as a plane, then the plane with the vertical line The angle is the angle of elevation, due to the "flat" real good measure, we approximate the high-frequency antenna close to the back of the first strut portion of the line as the "flat", then it is that the antenna elevation and vertical strut at an angle, we call it here for the time being need to pay attention to one corner A. This approximation was established on the premise that your antenna is not much error and make your antenna placed in the horizontal plane.
The angle A is the part we need to adjust, how to obtain the angle A then? Each satellite has its own parameters of elevation and azimuth, using software or online inquiry by the satellite, the elevation of your location, temporarily called the angle B. Each antenna has its own angle, such as self-Zhongwei 0.6m Offset Fed angle is 24 degrees, we called the antenna's own inclination angle of CB and C are fixed, so you need to adjust the angle A is:
Are loaded when: A = B-C
Flip when: A = B + C
The so-called azimuth, see this site, 10 floor plan there are several expressions are actually one thing, just not the same frame of reference of the different versions. We choose a commonly used to illustrate, if a star in your location The azimuth angle is 50 degrees south easterly, which is south of 40 degrees East, and replaced with the North east of 130 degrees, as replaced by Western south, west north is the number of degrees, left as a question for you .. got it .... after the satellite's azimuth, antenna tune it how, once again, we put the antenna on the plane of the high frequency first struts (because the sting is L-shaped) and the antenna is approximately as "flat" vertical, this prop in the horizontal plane of projection, must be mentioned by me above 50 degrees moldings fourth quadrant parallel.
Usefulness of the ku-band polarization angle is not particularly large. Generally almost on the line. When you stand behind the antenna, high-frequency part of the first terminal when the ground is moving (6 o'clock), polarization angle is 45 degrees, high-frequency part of the first wiring moving in the sky, the polarization angle of 135 degrees (12 o'clock), counterclockwise rotation is reduced, clockwise is a plus. polarization angle of 180 degrees rotation after the polarization angle is equal to the original.
Basic three point clear, the next is specific to operate.
First, dm500 machine settings, the above-mentioned articles have shown that although there may be some minor discrepancies. In real time to find a star, especially for the first time novice, it is recommended to set into a single star in the middle do not accept cut 1 of 4 things like simplifying the issue. here require special attention, do not forget to set up dm-top tuner local oscillator.
If the satellite antenna manufactured without error, then you are at an absolute level of the plane, then the precise elevation and azimuth is set up, tune do not have to transfer, the boot can find a satellite. But unfortunately, the antenna is error, You can not on the level and angle settings can not be accurate, so you have to adjust. how tone? The so-called time flies bear him, would say as a flash game flesh.
1, to ensure the connection is normal, to ensure normal dm machine settings. Must be able to sing, watch the video while searching, anyway I moved the old 25-inch television on the roof.
2, to ensure the antenna fixed in the horizontal plane as possible. This constant is very important, hand-held or easily find a place on the bench, veteran feasible, the novice will not work. Fixed can guarantee you a Adjust only one parameter, either elevation either azimuth. If not fixed, you do not know you in the end, after the move of the antenna is changed, or the azimuth angle of elevation changed, or is changed, the two together, my first day of the failure is due hand, the results change dangling into holding a pot no effect. As for the level, but as far as possible, not as absolute, since we can adjust.
3, first set up elevation, if the absolute levels, the angle of the set criteria are no longer changed.
4, set the azimuth. Some people do not know their home position, in fact, I think this is no problem, if you know that generally in the southeast to the satellite, then big deal sweep from due east to due south, turn it 90 degrees. Novices do not find a location that would react, pay attention to TV show on the letter dm machine synchronous noise ratio and, if accurate elevation, azimuth to the letter after the sudden Cuangao noise ratio will be 80 more than usual bounce in the following 60 . If the elevation Chaliaoyidian, so although not Cuangao so much, much higher than 60. If you turn 90 degrees azimuth or no change, indicating an elevation not fine, increase or reduce the degree of 1,2 1,2 degree to repeat the steps above.
5, novices do not understand what is called when the azimuth adjustment "slowly" rotating antenna. Here for a visual speed: you adjust the antenna's rotation speed and watch the second hand speed is almost enough, do not emphasize it so a long time.
6, when the azimuth, elevation are roughly correct, the signal is sufficient, then minor adjustments, and strive to achieve the best signal quality.
7 Star is easy to find. Only the first difficulties, have not seen Well, Well no idea. As long as you break the office, you will find and out of a boundless emptiness. I failed the first day of holding the next day got a tripod. up less than 10 minutes to tune out. and then immediately removed the change flip, the less than 5 minutes to succeed. Who says failure is new to flip? Then add 4 chopped 1 plus binary stars, both successfully. Is set to cut a 4 point out when the trouble for a long time.
8, if you have not successfully transferred for a long time, watching from the beginning of this article all the way down, carefully where to find their own not to engage in re-to, do not lose faith Do not give up. Very easy to find stars. Of course, if the direction of your satellite Building tall buildings are files, and it can not get up.
9, the installation conditions of introduction:
1. Install Office 60 degrees must have a south easterly direction without shelter, without the direction south of users can be installed on the top floor and the ground!
2. Installation Service is best with broadband (capable of Internet access on-line) the best is a monthly subscription.
3. Antenna can be installed in the balcony. The top floor. The window. Ground (conditions are good, users can install indoors)
Equipment required for installation:
1. Antenna side of the receiver a dm500s, high-frequency first two, 22khz switch 1, a shared account
X m coaxial cable (customer-owned).
A router (customer-owned, preferably wireless). The Company solemn promise: sale, repair of the 3 days of receipt will fix the counter back to the circumstances, it can be replaced with new machine!