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Pentek rolls new Model 7131 version

Posted: 06 Apr 2005 ?? ?Print Version ?Bookmark and Share

Keywords:pentek? model 7131? pmc module? pci mezzanine card modulem virtex-ii fpga? fpga?

Pentek Inc. announced a new version of its Model 7131 16-channel multiband digital receiver PMC (PCI mezzanine card) module that, like its namesake, features two 14bit 105MHz A/Ds and four quad digital receivers. The new board also couples the Virtex-II FPGA technology with these channelized software radio functions, providing over two million gates available for user customization.

The PMC module's ruggedness makes it suitable for stressful environments such as unmanned aerial vehicles (UAVs) and other combat applications. "With its full complement of resources and extremely flexible architecture, the Model 7131 can tackle a wide variety of applications in communications, signal intelligence and data acquisition," said Pentek VP Rodger Hosking. "These new ruggedization levels now extend the deployment space into harsh environments covering a significant range of important military and aerospace platforms."

The Model 7131-702 accepts two analog inputs on front-panel SMA connectors, either from baseband HF sources or IF outputs from communications receivers. Each of the two inputs is transformer coupled and digitized by a 14bit ADC capable of operating at sample rates up to 105MHz. The sample clock is derived either from an internal crystal oscillator or an external clock supplied through a front panel SMA connector.

The new product also includes four quad multiband digital receiver chips driven by the samples from both A/Ds. Each device includes four receiver channels capable of independent center frequency tuning from DC to 40MHz with output bandwidths ranging from 4KHz to 2.5MHz. A crossbar switch allows all 16 receiver channels to independently select either of the two A/D inputs. The front-panel clock/sync bus allows one 7131-702 to act as a master, driving the sample clock out to a front-panel cable using LVDS differential signaling. Multiple slaves can be then clocked synchronously with the master.

The Model 7131-702 has an operating temperature range of -20C to 65C and a storage range of -40C to 100C. It is qualified for 20g shock, 2g sine vibration and 0.04g?/Hz random vibration. A conformal coating is also available that extends operating range to 100 percent relative humidity and protects the board from environmental contaminants.

Xilinx FPGAs
The Model 7131-702 is equipped with either XC2V1000 or XC2V3000 FPGA devices from the Xilinx Virtex-II family, offering logic densities of one or three million gates, respectively. The FPGA is factory-configured to perform standard modes of data packing, formatting and channel selection.

Prices for Pentek's new PMC module start at $7,495, with availability at 8 to 10 weeks ARO. ReadyFlow board-support packages are also available to speed development tasks, and both Linux and Windows drivers are available to allow high-level programming on workstations. Driver source code is included, allowing users to modify software functionality.

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