Ultrafast digitizers and AWGs get Digital Pulse Generator option

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Ultrafast digitizers and AWGs get Digital Pulse Generator option
Ultrafast digitizers and AWGs get Digital Pulse Generator option

Four independent digital sources for stimulus and trigger signals

Bangalore, India, November 15, 2023: After the successful introduction of the Digital Pulse Generator (DPG) option for its medium-speed products, Spectrum Instrumentation has now added the same feature to its ultrafast digitizers (with up to 10 GS/s speed) and arbitrary waveform generators. Available for the entire product line, the low-cost option adds three to four independent digital sources for generating pulses and pulse streams. This new capability makes them ideal for a wide variety of automated test and measurement applications. For example, the DPG option can be added to 200+ products so that they can produce the stimulus and trigger signals needed for machine or experiment control in systems deploying AI, robotics, and mechatronics, for closed-loop testing, or even when assessing electronic circuits, components, and sensors.

With the DPG option installed, the Digitizer and AWG products can produce digital pulses with a timing resolution that is based on the sampling clock of the device. For instance, the DPG, together with one of the company’s flagship 33xx series digitizers, can produce up to four separate pulse streams, each with a timing resolution of just 3.2 ns. At the same time, the 12-bit digitizer card can acquire incoming electronic signals by sampling them at rates up to 10 GS/s!

The DPG is implemented using the on-board FPGA technology of the product. The design allows the units to perform their regular tasks of acquiring or generating analog waveforms in parallel with pulse generation. The digital pulses are output via front panel multi-purpose I/O connectors and are suitable for use with today’s most common digital circuitry. The pulse amplitude levels are 3.3 V low-voltage TTL (LVTTL); TTL is compatible with high impedance loads.

Control of the DPG is via a simple programming structure that allows adjustment of the pulse characteristics, whether it is generating single pulses, pulse trains, or continuous pulse streams. Key parameters, such as the pulse width, period, phase, or the number of pulses in a pulse train, are all programmable. Once enabled, the DPG will output the pre-programmed pulses on the assigned multi-purpose I/O connector as soon as it receives a valid trigger. For maximum flexibility, the trigger can be generated by software or from one of many different possible sources. These include all the product’s regular internal and external trigger sources, or even one of the other DPG channels. As the pulse generator outputs are intrinsically synchronized to the product’s acquisition or replay functionality, they are perfect for producing enabling or switching signals (e.g., for signal actuating). Furthermore, the ability to cascade the different pulse generators creates a convenient way to transform pulse repetition time scales.

Available for all Spectrum digitizers and AWGs

The DPG option can be installed on over 200 different PCIe, PXIe, or LXI digitizers and AWG products. The digitizers offer sampling rates from as low as 5 MS/s up to a maximum of 10 GS/s and ADC resolutions of 8, 12, 14, and 16-bit. The company’s AWGs offer output rates from 40 MS/s up to 1.25 GS/s. The AWGs all use 16-bit digital-to-analog converter (DAC) technology and are capable of creating almost any waveform with exceptionally low noise and outstanding reproducibility. Individual digitizers and AWG cards can have one, two, four, or eight channels. In addition, the company has a unique Star-Hub system for creating larger multi-channel systems with up to 128 fully synchronized channels. The stand-alone Ethernet/LXI units offer 2 to 48 channels. The exceptionally wide product range lets users select the “Perfect Fit Solution” that best matches their application.

The low-cost DPG option (ordering code “PulseGen”) is available for immediate delivery and can be supplied for new and existing products. Adding the option to any unit provides a conveniently synchronized timing interface between its acquisition, or generation, functionality and other external equipment.

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