INSTRUMENTATION & ELECTRONICS Built on the M5i series platform, first
developed for Spectrum’s ultrafast 33xx digitiser line, the AWGs exploit proven design technology. All the products come with 2 GSamples of on-board memory (8GS optional) and high-speed data transfer using the 16 lane, Gen 3, PCIe bus. This ultrafast bus allows data to be sent to and from the cards at 10GBytes/s. When needed, data can even be streamed directly to the AWG for replay in a FIFO mode; a process that allows almost limitless waveform production. Both the M5i series AWGs and
digitisers are able to stream data directly to and from a GPU if Spectrum’s SCAPP driver package is used. Waveforms can be replayed in a
single-shot or repeated process, while multiple waveform segments can be output using the Multiple Replay mode, optimising memory efficiency. The different replay modes can also be combined with FIFO streaming. Waveform replay can be initiated by
a simple software command or via a trigger event. Trigger signals can be input on two external trigger lines.
COMBINING AWG CARDS Individual cards offer one or two output channels. If more channels are needed, it is possible to connect multiple cards together using the company’s proprietary Star-Hub clock and trigger synchronisation module. Star-Hub allows up to eight M5i.63xx AWG cards to be connected, to create systems with up to 16 fully synchronised channels. Each channel is then driven by a common clock and shares the same trigger. Using Star-Hub synchronised M5i.63xx AWGs, the user can build synchronous systems with output rates up to 16x5GS/s or 8x10GS/s.
STIMULUS-RESPONSE SYSTEMS For applications that require the connection of AWGs and digitisers,
like stimulus-response or closed- loop test systems, M5i.63xx AWGs and M5i.33xx digitisers can be synchronised using direct clock and trigger connections. Digitisers and AWGs are available with matching speed grades of 3.2GS/s, 5GS/s and 10GS/s for easy integration. Using two of the Star-Hubs, one can combine up to eight AWGs, while the other links up to eight digitisers, setting up ultrafast MIMO systems with up to 16 Transmit and 16 Receiver channels of 5GS/s. The AWG-plus-digitiser combination is a powerful setup that can be utilised for a number of dynamic test applications. For example, to determine the frequency characteristics of wideband amplifiers or filters, or testing the response of electronic components and subassemblies under various conditions.
For more information visit www.
spectrum-instrumentation.com
A simulated 1GHz phase modulated radar pulse (upper left) generated with the new ultrafast M5i.63xx AWG. Also visible: The demodulated phase information (bottom left), the frequency spectrum of the pulse (upper right) and a horizontally expanded view of the spectrum (lower right)
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