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  1. #1
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    Default PCI data RECEIVE/TRANSMIT CARD

    Salut
    Vreau sa va intreb daca stiti ceva legat de pci card care transmit si primesc (tx/rx), de ex. pentru internet 2way. aceste carduri comunica intre ele printr-un cablu.....boh.....
    aici va puteti forma o idee, www.web-sat.com

  2. #2
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    ce anume te intereseaza ?

    isp-ul Websat foloseste niste placi proprietare
    din cunostintele mele cred ca e singurul care foloseste ansamblu tx-rx pe placi pci {care se monteaza inauntru in computer}
    restul isp thoway folosesc modemuri sat{Vsat. Hughes.Gilat,etc}externe
    pe usb sau rj45

    placa de receptie este o placa banala de date{cred ca [email protected]}
    nush de cine este fabricata placa de tx
    cablu care uneste placile era folosit la primele modele care le-au folosit
    Modelele noi nu au nici o legatura intre ele in calculator

    Sti poate de unde se poate procura o asemenea placa de tx inafara de websat?

    Decat sarac si bolnav mai bine bogat si sanatos

  3. #3
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    Quote Originally Posted by ursan2003
    ce anume te intereseaza ?

    isp-ul Websat foloseste niste placi proprietare
    din cunostintele mele cred ca e singurul care foloseste ansamblu tx-rx pe placi pci {care se monteaza inauntru in computer}
    restul isp thoway folosesc modemuri sat{Vsat. Hughes.Gilat,etc}externe
    pe usb sau rj45

    placa de receptie este o placa banala de date{cred ca [email protected]}
    nush de cine este fabricata placa de tx
    cablu care uneste placile era folosit la primele modele care le-au folosit
    Modelele noi nu au nici o legatura intre ele in calculator

    Sti poate de unde se poate procura o asemenea placa de tx inafara de websat?
    Cred ca placa TX este fabricata de BROADLOGIC, ei se ocupa de asa ceva.
    broadlogic2030

  4. #4
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    Quote Originally Posted by cocohag
    Quote Originally Posted by ursan2003
    ce anume te intereseaza ?

    isp-ul Websat foloseste niste placi proprietare
    din cunostintele mele cred ca e singurul care foloseste ansamblu tx-rx pe placi pci {care se monteaza inauntru in computer}
    restul isp thoway folosesc modemuri sat{Vsat. Hughes.Gilat,etc}externe
    pe usb sau rj45

    placa de receptie este o placa banala de date{cred ca [email protected]}
    nush de cine este fabricata placa de tx
    cablu care uneste placile era folosit la primele modele care le-au folosit
    Modelele noi nu au nici o legatura intre ele in calculator

    Sti poate de unde se poate procura o asemenea placa de tx inafara de websat?
    Am aceste 2 placi: rx este broadlogic 2030 dar pe TX nu este scris nimic, insa dupa tuner am descoperit ca este sora ei de la broadlogic. mi se par vechi, tu ce spui?
    Ce parere ai de: DVB Master FD ™


    Advanced DVB ASI Send and Receive PCI 2.2 Interface Card with Accurate 25 ppm clock,Unlimited PID Filtering, Packet Arrival Timestamping, Jitter Management, and Auto Null Packet Insertion with optional Failover Relay and High Stability Oscillator.



    OVERVIEW




    The DVB MASTER FD provides video network developers a very high performance and low cost DVB Master FD transmitter/receiver solution for PCI bus computers. This card meets all of the specifications for DVB ASI equipment and also has added features to assist in real-time processing of the MPEG-2 Transport Stream on the host computer. The DVB Master FD uses advanced link list DMA to move data from its on-board FIFO to system memory and back again. The drivers use fully overlapped IO using circular data queues to give high throughput while using the minimum of CPU resources. This design leaves the maximum of CPU power for use in real-time application processing of the stream.



    The advanced features of the DVB Master FD provide hooks to allow easier real-time processing of the transport stream by the host computer. The receiver has features including unlimited PID filtering, synchronization of incoming transport stream (TS) packets, auto size detection and RS code stripping. The DVB transmitter features include extra fine stuffing control (Fine Tuning), an ability to add 16 - 0x00s to 188 byte packets and an external clock input. The external clock input is important for applications that need to control the transmission to ATSC standards or to synchronize to a station clock.



    An extra cost high stability clock option is available for this card. The transmitter function has an option for a high stability oscillator with less than 2.8ppm drift, meeting ATSC specifications. This is useful for applications such as bridging between ATSC and DVB transmission standards.



    Integration of both Transmitter and Receiver on the same card gives a one-slot solution for DVB processing applications. An input MPEG-2 TS can be received, processed and re-transmitted in real time by the host system making it ideal for many broadcast, data casting and monitoring applications.



    Driver software is available for Windows 2000, Windows XP, QNX, Windows NT 4 and Linux. The source code is available for the Linux driver. Drivers support multiple boards in a system.



    STANDARD FEATURES


    270 Mbits/sec DVB ASI transmitter and receiver on one card
    ˝ size PCI card form factor
    Drivers for Windows 2000, XP , QNX, and Linux
    Large 1.5K buffer FIFOs eliminate latency problems
    Programmable Inter-byte and Inter-packet stuffing as per DVB specification
    Cable Equalization on the receiver input
    LED status indicators show Tx data, Rx data, Synch, Carrier Detect
    Advanced link-list DMA interface


    PCI 2.2 compliant interface bus Advanced Receiver TS processing capabilities;
    - Synchronizes incoming packets to byte boundaries
    - Automatic 188 and 204 packet size detection
    - Interrupt on in/out of synch
    - Software selectable option to Strip 16 bytes from 204 byte packets
    - Unlimited PID filtering (any number of PIDs may be selected)


    Advanced Transmit capabilities
    - Enhanced transmit rate “Fine Tuning” control to <2.8ppm granularity
    - Optional High Stability Oscillator with <2.8ppm (special order option)
    - Software selectable option to add 16 - 0x00 bytes to 188 byte packets
    - External transmit clock input



    Receive Packet Synchronization



    The DVB Master FD receiver will check the incoming transport stream for packet synch, and synchronize on it. Once synchronized, the packets will be stored on byte boundaries in memory. This makes further processing of the transport steam much easier for the host processor. When the board is synchronized on a valid stream the green “Rx Data” and “Synch” LEDs will be illuminated.



    Packet Arrival Timestamping




    Under software control each packet arrived is timestamped with a time generated via an internal timer/counter.



    Null Packet Insertion








    Under software control but performed by hardware "null packets" are automatically inserted into the bit stream




    Automatic Packet Size Detection



    The DVB Master FD will automatically detect packet size and will indicate the current size in a status register. If packet size changes suddenly, it will loose synchronization, then resynchronize on the new packet size and indicate the new packet size in the status register. An interrupt will be generated on loss of synch and re-synch.



    Indicator LEDs



    Indicator LEDs are provided on the bracket to show card operation. Tx – indicates that data is being transmitted, Rx – indicates that data is being received, Synch ( S) – indicates that the receiver is able to synchronize on the transport stream packets, and Carrier Detect (CD) – indicates that a signal is present.



    In/Out of Synch Interrupt



    An interrupt will be generated whenever synchronization is lost or recovered. Interrupts are generated when there are changes in the stream and indicate that the status of the stream should be checked.



    16 byte Strip and Add



    The 16 byte Stripping function will remove the extra 16 Reed Solomon encoded bytes from the 204 byte packets to create 188-byte packets. Similarly, it can be used to add 16 bytes filled with zeros to 188-byte packets to create a 204-byte packet stream.



    PID Filtering



    This function allows you to select any number of PIDs from the total of about 8K possible PIDs to be filtered from the stream. The DVB Master FD receiver will block all PIDs that are not selected. This is an extra cost option and must be ordered separately.



    Transmitter Fine Tuning (FT)



    The normal inter-byte (IB) and inter-packet (IP) stuffing options available with the DVB ASI standard cannot be used for fine rate control. In some applications, such as reading files from a disk, it may be desirable to use stuffing to control the transmission rate of the stream in order to match the rate required by the Program Clock Reference (PCR) of a Transport Stream. Because of this, we have developed FT feature. FT is accomplished by first setting the standard IP and IB to select a rate as close to the desired rate as possible. Then the FT parameter can be set to bring the rate within 2.5ppm of the target.



    High Stability Oscillator



    The DVB Master FD is normally shipped with a crystal-controlled oscillator with a clock accuracy of ± 50 ppm. This complies with the DVB ASI standard requirements but will not be accurate or stable for ATSC standards. ATSC standards require a clock accuracy of ± 2.8 ppm with a drift not exceeding 0.028 ppm/s. The High Stability Oscillator is an extra cost option and must be ordered separately.



    External Clock Input



    An input BNC connector is provided for an external transmit clock. This clock is one of three optional transmit clock sources. The transmit clock options include the External Clock, Recovered Clock, and Internal Clock.



    Conformity to DVB Standards



    The DVB Master FD meets CENELEC EN50083-9: 1998 – Cable distribution systems for television, sound and interactive services – Part 9: Interfaced for CATV/SMATV headends and similar professional equipment for DVB/MPEG-2 transport streams.



    EMI Standards



    CE Marking in accordance with EN50081-2: 1993 and EN50082-1:1997.
    FCC Part 15, Subpart B, Class A verification TOP Full Duplex Block Diagram



    Option: Customizability: We can add custom features for your requirements




    Option: Relay and Watchdog Functionality- A depopulated relay can be used to manage loss of power and still keep data paths functional.




    SPECIFICATIONS

    Dimensions
    Width : 4.20 in (10.67 cm)
    Length : 6.875 in (17.46 cm)
    Thickness : 0.58 in (1.47 cm)
    Typical Weight 5.2 oz (147 g)
    Input/Output Connectors 75-Ohm BNC
    External Clock Input 75-Ohm DC Blocked ECl
    Data Input/Output DVB ASI Coaxial,DVB Transport Stream
    Typical Power +5 V @390mA.
    Operating Temperature 0 to 55 C
    Operating Humidity To 90%,Non-condensing
    Status LED Indicators TX,Rx,Synch,Carrier
    Receive FIFO Size 1.5K bytes
    Bus Interface PCI 2.2,5 V or 3.3 V


    Option: DVB Master FD/R -as above with Failover Relay



    APPLICATIONS


    Interface DVB MPEG-2 transport streams to the PCI bus
    PID filtering of transport streams
    IP - DVB interfaces
    Data over DVB
    Interface DVB to ATSC


    SOFTWARE


    Windows 2000/XP Driver
    Linux Driver
    StreamBed -Middleware
    Synchronous API- High Level API
    Call Back API -Low Level API





    Cred ca placa TX este fabricata de BROADLOGIC, ei se ocupa de asa ceva.
    broadlogic2030

  5. #5
    Priceput in multe Teacher
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    Al cui este postul de mai sus in care sustine ca are placile de la websat?

    Decat sarac si bolnav mai bine bogat si sanatos

  6. #6
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    Quote Originally Posted by ursan2003
    Al cui este postul de mai sus in care sustine ca are placile de la websat?
    Salut
    daca te uitai mai atent vedeai cine a scris sau vrei sa fii sigur ale cui sunt sunt ale mele insa se chiama BOADLOGIC si nu sunt de la websat. ce parere ai de aceste placi DVB Master FD ™ comparativ cu broadlogic. (RX/TX)

  7. #7
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    Quote Originally Posted by ursan2003
    ce anume te intereseaza ?

    isp-ul Websat foloseste niste placi proprietare
    din cunostintele mele cred ca e singurul care foloseste ansamblu tx-rx pe placi pci {care se monteaza inauntru in computer}
    restul isp thoway folosesc modemuri sat{Vsat. Hughes.Gilat,etc}externe
    pe usb sau rj45

    placa de receptie este o placa banala de date{cred ca [email protected]}
    nush de cine este fabricata placa de tx
    cablu care uneste placile era folosit la primele modele care le-au folosit
    Modelele noi nu au nici o legatura intre ele in calculator

    Sti poate de unde se poate procura o asemenea placa de tx inafara de websat?
    Ma intreb daca aceasta placa DVB Master FD poate fi folosita pentru interent 2way(via satelite)

  8. #8
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    Quote Originally Posted by ursan2003
    Al cui este postul de mai sus in care sustine ca are placile de la websat?
    Se vede ca nimeni nu este interesat de noua tecnologie, ma refer la 2 way satellite, cum functioneaza, avantaje...si apoi se plang ca au o viteza prea mica pentru download.

  9. #9
    Priceput in multe Teacher
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    2 way nu e o tehnologie noua

    exista de mult dar cel putin in Europa e prohibitiva din cauza pretului
    aparaturii si a benzii in sine

    ea este adresata pentru zonele unde internetul broadband sau liniile normale terestre {dial-up ,cablu}etc nu au ajuns sau nu este posibilitate fizica sa ajunga
    In Sua lucrurile stau total altfel
    acolo aparatura este ieftina iar daca platesti internetul in avans pe minim 2 ani ti-o da in forma de inchiriere fara sa platesti nimic pe ea
    si banda este ieftina incepind de undeva de la 40$ in sus

    nu pot sa ma pronunt daca placile tale is compatibile cu vreun serviciu 2 way

    Decat sarac si bolnav mai bine bogat si sanatos

  10. #10
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    Quote Originally Posted by ursan2003
    2 way nu e o tehnologie noua

    exista de mult dar cel putin in Europa e prohibitiva din cauza pretului
    aparaturii si a benzii in sine

    ea este adresata pentru zonele unde internetul broadband sau liniile normale terestre {dial-up ,cablu}etc nu au ajuns sau nu este posibilitate fizica sa ajunga
    In Sua lucrurile stau total altfel
    acolo aparatura este ieftina iar daca platesti internetul in avans pe minim 2 ani ti-o da in forma de inchiriere fara sa platesti nimic pe ea
    si banda este ieftina incepind de undeva de la 40$ in sus

    nu pot sa ma pronunt daca placile tale is compatibile cu vreun serviciu 2 way
    salut
    daca ne gandim la momentul aparitiei nu este noua, daca privim utilizarea in Europa este noua datorita motivelor care le-ai mentionat.(accesibilitate)
    placa despre care iti vorbeam stiu ca este folosita pentru transport date prin satelit insa prea multe nu cunosc. oricum multumesc pentru raspunsurile tale. cred ca in america se pot afla mai multe despre aceasta placa http://www.linsys.ca

  11. #11
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    daca are cineva acces la un astfel de system il rog sa dea un copy/paste la un iesirea comenzii
    tracert google.com

    chiar sunt curios de care e rtt-ul ...
    din ce am vazut la liniile one way de la ISP care ofera net prin satelit pana jos in placa dvb sunt aproximativ 300ms

  12. #12
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    mendark:Spune-ne te rog la care ISP de net prin sat ai constatat pingurile astea?

 

 

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