News - Board and System Test

General Purpose Digitizers with Sampling Rate up to 125 MS/s

03 April 2018 - Spectrum Instrumentation announced the addition of five new models to its general purpose M2p.59xx series of PCIe 16-bit digitizer cards. The new versions extend the performance range by increasing the maximum sampling rate from 80 MS/s up to 125 MS/s. The increased sampling rate, together with higher overall bandwidth, enables the new cards to capture a wider range of electronic signals. It makes them ideal for use in applications where signals in the DC to 50 MHz frequency range.

Based on the latest 16-bit analog to digital (ADC) technology, the new M2p-596x series includes models that provide 1, 2, 4 or 8 input channels. Multi-channel models each have their own ADC and signal conditioning circuitry to allow fully synchronous acquisitions on all the inputs. Importantly, the high-resolution 16-bit ADCs deliver sixteen times more resolution than digitizers using older 12-bit technology and 256 times more resolution than what is available from digital scopes that commonly use 8-bit ADCs. The extra resolution translates directly into improved measurement capabilities and superior dynamic performance. It delivers a higher Signal-to-Noise Ratio (SNR), better Spurious Free Dynamic Range (SFDR) and less distortion than 12- or 14-bit products.

Oliver Rovini, CTO at Spectrum, said: “We’re delighted to expand our mid-range digitizer lineup with these new 125 MS/s, 16-bit models. They offer a great combination of speed, accuracy and performance, all at a very affordable price. We expect they will be very popular in a diverse number of applications such as Ultrasound, Laser, Lidar, Radar, Power, Automotive, Medical Science and even big Physics experiments.”

The complete product has been packed into a half-length PCIe card, yet it still offers a full set of digitizer features. Each channel has its own programmable input amplifier with ranges between ±200 mV and ±10 V, programmable input offset for unipolar measurements, programmable input termination of 50 Ω and 1 MΩ and an integrated calibration circuit. Models are available with up to 8 single-ended and up to 4 differential channels.

To match nearly every application requirement, the units come with a variety of signal triggering techniques, an impressive on-board memory of 1 GByte and a number of intelligent acquisition modes, such as multiple recording, gated sampling or ABA (the combination of fast and slow continuous acquisitions). At just 167 mm long, these multi-function digitizers fit into much smaller PC systems – making them perfect for compact OEM solutions.

Streaming Rate up to 600 MByte/s

Incorporated into the digitizers is a PCIe x4 lane interface that enables lightning fast, data streaming at rates of more than 600 MByte/s – or more than 80 MS/s continuous streaming for 4 channels. The cards also support Spectrum’s new SCAPP software option – the Spectrum CUDA Access for Parallel Processing – that opens an easy-to-use yet extremely powerful way to digitize, process and analyze electronic signals. SCAPP allows a CUDA-based Graphical Processing Unit (GPU) to be used directly between any Spectrum digitizer and the PC. The big advantage is that data is passed directly from the digitizer to the GPU, where high-speed parallel processing is possible using its multiple (up to 5000) processing cores. Fast data streaming and SCAPP can both improve overall measurement speeds and free up vital PC resources – creating a revolutionary approach to advanced signal processing and imaging.

Multi-channel Systems

For high-density, multi-channel acquisitions, up to 16 digitizer cards can be fully synchronized using Spectrum’s proven Star-Hub technology. Star-Hub allows systems to be built with up to 128 channels, all sharing a common clock and trigger in one single chassis. For synchronization with other external equipment, clock and trigger inputs and outputs are also standard. Further flexibility is provided via four individually programmable, front panel connectors that offer additional trigger inputs, status outputs, synchronous digital input lines, asynchronous I/O or a reference clock input for an integrated time stamping unit.

https://spectrum-instrumentation.com/

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