Torrent QDpi PCI Multifunction QAM/DVB-ASI Interface

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Torrent QDpi QAM/DVB-ASI PCI Multifuction CardThe QDπ, an established member of the Company's VDOProTM family of high performance, low cost MPEG delivery appliances for open system Video on Demand (VoD) servers, is a multi-function PCI card with up to 3 Quadrature Amplitude Modulator (QAM) channels with RF upconversion, and up to 3 DVB-ASI ports.

The QDπ provides up to 3 QAM outputs on adjacent channels. Integral upconversion to RF output enables the ultimate in flexibility and minimizes the cost and complexity of DTV and HDTV infrastructure. The QDπ may be ordered with zero, one, two, or three QAM channels.

Up to three DVB-ASI ports on the QDπ give you a wide variety of application dependent configurations because each port can be selected under software control to be either a DVB-ASI receiver or transmitter. The QDπ may be ordered with zero, one, two, or three DVB-ASI ports.

Using the same Application Programming Interface (API) that powers the other VideoPropulsion QAM and DVB-ASI products, the QDπ can be integrated into existing applications that support these products with ease. Software support is available today for Sun Solaris on SPARC, Sun Solaris x86 on Intel, Windows 2000/XP, Linux, and FreeBSD operating systems.

Product Highlights

 

  • Three QAM channels with 6 MHz or 8 MHz bandwidth
  • User selectable 16QAM, 32QAM, 64QAM, 128QAM, or 256QAM modes
  • Upconversion to 50 - 860 MHz RF output
  • Three DVB-ASI ports configurable as receive or transmit under software control
  • API compatible with VDOPro QAM and DVB-ASI multiplexing products
  • Patented JAVA micro-engine architecture
  • PCI Express Version 1.0a or PCI-64/66 Version 2.2, Short PCI form factor
  • Full power-up and service diagnostics

VideoPropulsion engineers, specialists in delivering supercomputer quality, high speed, high density, storage and networking solutions, have created a matchless product to meet requirements for the next generation of digital video deployments.

The QDπ hardware and device drivers collect and multiplex MPEG-2 transport streams directly from host memory. The resulting multiple program streams can be output on the QAM channels transmitted with upconversion or can be transmitted from one or more of the three DVB-ASI ports configured as transmitters.

The QDπ QAM channels support 16QAM, 32QAM, 64QAM, 128QAM,and 256QAM with variable symbol rates up to 7 Msymbols/second. 512QAM and 1024QAM are available on request. Forward Error Correcting (FEC) encoding complies with ITU-T J.83 Annex A (DVB/DAVIC/EuroDOCSIS/IEEE802.14), Annex B (DigiCipherII/SCTE/DOCSIS/IEEE802.14), and Annex C (Japan).

VPiTVTM Libraries, VideoPropulsion's standardized application interfacing software, enables developers to build interactive VoD applications across a multi-vendor server environment. Customers can select from a broad range of interconnect hardware and use a common application program interface (API) which supports a fully heterogeneous server environment for the most popular operating systems: Sun Solaris, Linux, FreeBSD, and Windows.

  • Features
  • Specifications

Functional Specifications

Inputs:

  • MPEG-2 transport streams
    • received on DVB-ASI receiver ports by the application software

Outputs:

  • QAM:
    • MPEG-2 multiple program transport stream (MPTS) modulated with 16QAM, 32QAM, 64QAM, 128QAM, or 256QAM
    • 512QAM or 1024QAM available on special request
    • Variable symbol rates up to 7 Msymbols/second
    • ITU-T J83 FEC encoder
      • Annex A (DVB/DAVIC/EuroDOCSIS/IEEE802.14)
      • Annex B (DigiCipherII/SCTE/DOCSIS/IEEE802.14)
      • Annex C (Japan)
    • Output carrier: 50 - 860 MHz RF in 12.5KHz steps
    • Ouput impedance: 75 Ohms
    • Output connector: F connector
  • DVB:
    • DVB-ASI compliant MPEG-2 multiple program transport stream (MPTS)
    • BNC or MiniSMB connectors available

Primitives:

  • Mux initialization, open, close
  • Program stream initialization, open, close, stop immediately or stop after stream rundown
  • Output stream priming
  • PAT/PMT/SDT/NIT/SID table support
  • PID remapping and PID drop support
  • PCR restamping
  • Bandwidth management
  • Packet size support: 188 byte (204 byte support on request)
  • Dynamic Buffer Control

Driver Support

The VideoPropulsion Mux Drivers for the QDπ use a highly efficient patent pending architecture for precise timing. Designed to automatically detect and configure to the hardware, these drivers offer numerous options to users. The driver accepts any combination of single program transport streams (SPTS) and multiplexes them into a single, multiple program transport stream (MPTS). The streams must be Constant Bit Rate (CBR) encoded and may contain embedded PAT, PMT and PCR data. The product is capable of remapping PIDs and restamping PCRs as needed for the multiplexing. Included with the driver are sample programs and their sources for guidance in using the API to interface with higher level applications.  The QDπ API is compatible with the API used on other VideoPropulsion products providing integrators with the flexibility to solve a myriad of customer needs with a minimum of effort.

QDπ Detailed Specifications
PCI Bus: PCI-32/66
PCI Version 2.2
Environmental: 5C to 60C Operating Temperature Range
0% to 95% Humidity, non-condensing
Device Drivers and API: Linux
Solaris on SPARC
Solaris x86 on Intel
Windows NT/2000/XP
FreeBSD
Power Requirements: 3.3 Volts @ 1.5 Amps
5 Volts @ 2.0 Amps
Output carrier frequency range: 50 MHz to 860 MHz
Channel plan: Any
      Tuned by center frequency, not channel number
      12.5KHz resolution
Frequency stability: ±12 ppm
      0-60 degrees C
RF Output Level (Min/Max): 45 dBmV min, >55 dBmV Max
Output level accuracy: ±1 dB
      Based on internal power detector's accuracy
      Pout = 45 dBmV to 61 dBmV
      Fout = 50 MHz to 860 MHz
Output Level Step Size: 0.1 dB typical, 0.3 dB Max
QAM Output Impedance: 75 Ohms
QAM Output Connector: F type RF connector
RF Output Return Loss: 14 dB Min, 16 dB typical
      50 MHz to 860 MHz
In-band Spurious Outputs: -48 dBc Max
      Fout ±3 MHz
      Pout = 58 dBmV
      Noise within ±50 kHz of the carrier is excluded
Broadband noise: -12 dBmV Typical, -10 dBmV Max
      47 MHz to 860 MHz
      Pout = 58 dBmV
      Integrated over 6 MHz
Phase noise: 0 kHz offset
  50 MHz = Fout < 100 MHz:   -90 dBc/Hz Typical, -85 dBc/Hz Max
  100 MHz < Fout < 400 MHz:   -91 dBc/Hz Typical, -85 dBc/Hz Max
  400 MHz < Fout < 800 MHz:   -90 dBc/Hz Typical, -85 dBc/Hz Max
  800 MHz < Fout = 860 MHz:   -88 dBc/Hz Typical, -85 dBc/Hz Max
DVB-ASI Interfaces (4): Rate: 270 megabit/second data rate
Impedance: 75 ohm
DVB-ASI Connectors: BNC connectors (standard)
Mini SMB connectors (optional)
Integral Protocol Engine: PTSC PSC1000A 100 MHz RISC processor
Proprietary packet processing FPGA
32 bit data paths
Standards: DVB-ASI
DVB-C
PCI Version 2.2
PCI Express Version 1.0a