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The K708 Digital Receiver supports one FMC-310 plug-in module providing up to 4 antenna inputs and 128 independent channels of DDC plus one spectrum analyzer embedded in a Xilinx Kintex-7 FPGA. It supports monitoring and/or recording of wide- or narrow- band spectra or channelized IF band data. The receiver supports contiguous recording at 160 MByte/s until running out of disk space.
Eight DDC banks, each supporting 16 channels, support monitoring of 128 DDC channels per single module. Each DDC bank can select its own ADC and decimation rate; each DDC channel has its own programmable tuner and programmable low-pass filtering supporting output bandwidth up-to 800 KHz. The data is packetized in VITA-49 format with accurate timestamps, synchronous to an external PPS signal. An embedded, digital power meter monitors the power (dBm) of any ADC input, supporting analog gain control of optional, user-supplied external front-end devices.
The spectrum analyzer, which supports windowing, calculates the wide-band spectrum of raw ADC data or the narrow-band spectrum of the cooked DDC output data at a programmable update rate. A programmable peak hold feature may be enabled to latch transient activity in the spectrum and the programmable threshold monitoring spectrum feature tracks spectral activities of up-to 512 bins.
A development kit is available for custom designs. Users can insert custom-made cores to create more advanced applications.