The PX1500-2 is a two channel high speed data acquisition board that can acquire up to 1.5GS/s each channel or up to 3GS/s for single channel operation when ADC data is interleaved. The PX1500-2 can be set up to use either a transformer coupled front end or an amplifier connection. The transformer connection can only be set for AC coupled operation and has a frequency capture range of 5 MHz to 2 GHz. The amplifier can be set for either AC or DC coupled operation with a frequency range of up to 1 GHz.
The board features an 8 lane PCI Express connection to the computer host as well as 1 gigabyte (GB) of on-board memory. If the average acquisition data rate does not exceed 1400 megabytes per second (MB/s) then the entire 1 GB memory may be used as an exceptionally large FIFO for acquiring non-stop, continuous data directly to the PCI Express bus. Significant test data has shown that recording with large FIFO buffering can be continuous at these rates even when operating in traditional non real-time environments such as the Windows operating system.
The PX1500-2 is designed to be a high performance wideband signal recording card that is economically priced. To achieve economic advantages, onboard FPGA data processing is not available on this -2 version of the PX1500 product line. If FPGA processing is required, please refer to the PX1500-4-SP product.
The PX1500-2 was designed to maximize the quality of the captured signal in terms of signal-to-noise ratio and spurious-free dynamic range over a very wide frequency range.
A frequency synthesized clock allows the ADC sampling rate to be set to virtually any value from 200 MHz, the minimum allowable ADC clock, to 1500 MHz, offering maximum flexibility for sampling rate selection. This frequency selection flexibility comes at no cost to the acquisition clock quality/performance when locked to either the onboard 10 MHz, 5 PPM reference clock or to an externally provided 10 MHz reference clock. The ADC may also be clocked from an external clock source.
Digitizing at frequencies in excess of 1500 MHz involves the on-chip ADC interleave feature. When data interleaving is activated, the ADC input clock is 1/2 the sampling frequency.
Up to three PX1500-2 boards may be interconnected in a Master/Slave configuration via a ribbon cable that connects at the top of the board. In this configuration the clock and trigger signals from the Master drive the Slave boards so that data sampling on all boards occurs simultaneously. Up to six boards can be set up for fully synchronized operation by utilizing the SYNC1500-6 as the clock and trigger source for the system. Users are likely better served to use the PX1500-4 for higher channel count based applications.