Torrent CN3LPe PCIe 3 Channel DVB-T Modulator

The new generation CN3LP and CN3LPe Low Profile PCI and Low Profile PCI Express 3 channel COFDM modulators add depth to your DTV applications by incorporating new technologies that extend the flexibility to configure dense DVB-T and DVB-H solutions.

The VideoPropulsion CN3LP and CN3LPe provide 3 channels of COFDM RF output modulated with your DTV Transport Streams supplied to the card  by your application. Integral upconversion to RF output in one block of 2 channels plus one block of 1 channel provides the ultimate in configurability, eliminating the need for external upconverters and messy cabling. The CN3LP and CN3LPe support both DVB-T and DVB-H.

Product Highlights

  • 3 channel COFDM RF output with 6, 7, or 8 MHz bandwidth
  • Upconversion to 50 - 860 MHz RF output
  • Support for DVB-T and DVB-H
  • Two PCI Low Profile variants available
    • CN3LP: PCI Version 2.2, compatible with 32 bit and 64 bit PCI systems
    • CN3LPe: PCI Express Version 1.0a

The CN3LP and CN3LPe hardware and device drivers collect and multiplex MPEG-2 transport streams directly from host memory. The resulting multiple program transport streams are COFDM encoded, modulated, and transmitted with upconversion.

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, Windows, and FreeBSD.

  • Features
  • Specifications

Functional Specifications


  • MPEG-2 Transport streams collected by the card from host memory
  • Data can be any combinations of single program transport streams (SPTS)


  • MPEG multiple program transport stream (MPTS)COFDM encoded and modulated
  • Output carrier: 50 - 860 MHz RF with 12.5KHz resolution
  • Ouput impedance: 75 Ohms
  • Output connector: F connector


  • 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 CN3LP and CN3LPe use a highly efficient patented 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 CN3LP and CN3LPe 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.

CN3LP and CN3LPe Detailed Specifications
Modulations: 16-QAM
Carriers: 2k and 8k modes (4k for DVB-H)
Coding rates: 1/2, 2/3, 3/4, 5/6, 7/8
Guard intervals: 1/4, 1/8, 1/16, 1/32
Bandwidth: 6MHz, 7MHz, 8MHz
Output RF carrier range: 50MHz to 860MHz
Channel plan: Any
Tuned by center frequency, not channel number
12.5KHz resolution
Frequency stability: ±12 ppm
0-60 degrees C
RF Output Level: 45 dBmV
Output Impedance: 75 Ohms
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
Noise within ±50 kHz of the carrier is excluded
Broadband noise: -12 dBmV Typical, -10 dBmV Max
47 MHz to 860 MHz
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
PCI Bus:

CN3LP: PCI Version 2.2
CN3LPe: PCI Express Version 1.0a

Environmental: 5C to 60C Operating Temperature Range
0% to 95% Humidity, non-condensing
Device Drivers and API:


Power Requirements:

CN3LP: 3.3V @ 1.5 A, 5V @ 2A, 12V @ 0.5A
CN3LPe: 3.3V @ 2.0 Amps, 12Volts @ 1.0 Amps