Spectrum Instrumentation releases M4x.44xx series of PXIe digitizers

  • June 15, 2016
Spectrum Instrumentation releases M4x.44xx series of PXIe digitizers
Spectrum Instrumentation releases M4x.44xx series of PXIe digitizers

June 15, 2016 - Spectrum Instrumentation Corp. has released its first digitizer product line based on the popular PXIe (PXI Express) modular instrumentation standard. The M4x.44xx series consists of six new products each packaged in a dual-width 3U module and incorporating a four lane PCI Express Generation 2 interface. The interface allows data transfer speeds in excess of 1.7 GB/s making the cards ideal for use in today’s fastest PXIe mainframe systems.

The digitizers include versions with two and four fully synchronous channels in resolutions of either 14 bits, for sampling at rates up to 500 MS/s, or 16 bits for sampling at rates up to 130 or 250 MS/s. With analog bandwidth up to 250 MHz, the digitizers are suited to use in ATE systems where electronic signals in the 1 to 200 MHz range need to be acquired and measured with the best possible speed and precision. Typical applications are semiconductor and component testing, radar, wireless communications, medical science, automotive, power, physics, surveillance, aerospace and defense.

Designed so that they can be used with the widest range of signals, the M4x.44xx series cards feature an oscilloscope style front-end. Each channel has its own separate monolithic ADC and signal conditioning circuitry. Fully programmable, the cards provide six gain input ranges (±200 mV up to ±10 V), selectable input impedance of 50 ‚Ѷ or 1 M‚Ѷ and AC or DC coupling. Furthermore, an internal bandwidth filter can be activated in situations where high frequency noise, which may mask signals, needs to be suppressed.

The flexible front-end circuitry is complemented by a trigger system and clock. The trigger source can be any of the input channels, either of the two external trigger inputs, any of the eight PXI trigger lines or the PXI star trigger. Trigger modes include positive or negative edge, both edges (window), software and rearm. In addition, logic triggering can be implemented based on the state of the channel and the external trigger inputs.

The clocking system of the digitizers is precise. The clock can be internally or externally generated (including as source the 100 MHz PXIe differential clock and the 10 MHz PXI clock). It has a built-in 10 MHz reference and, if required, it can be synchronized with other reference sources. A fine-resolution mode is also available that allows clock rates to be selected with 1 Hz resolution. The feature makes it possible to program the sampling rate of the digitizers to match that of other devices or to setup acquisitions for specialized input signal conditions.

All the digitizers come with 4 GByte (2 Giga-Samples) of on-board acquisition memory.. The capability is further expanded by a host of data acquisition and readout modes. These include single-shot capture (transient recording), streaming (FIFO), segmented (Multiple Recording), gated (Gated Sampling) or the combination of segmented acquisition of fast signals in parallel with slow continuous data recording (ABA mode). All trigger events can be time stamped, making it simple to know when they occurred and to determine the time between events.

The PXIe products are based on Spectrum’s M4i line of standard PCIe products and combine the features and signal quality of this series with the industrial standard of PXIe. The M4x products are two slots wide and fit into any PXIe chassis. All these features make it an ideal platform for industrial and mobile applications including those found in aerospace and defense or transportation. As Spectrums M4x platform is based on a modular concept it will also allow the release of several new PXIe products within a short time - all programmed through a common software interface that is similar to existing PCIe, PCI and PXIe products.

Technical Highlights:

  • Dual-width 3U PXIe digitizer boards transfer data in excess of 1.7 GByte/s
  • 14 and 16 bit resolutions for accurate measurement at high sampling rates
  • Low noise front-ends complimented with powerful triggering and versatile clocking for high precision A to D conversion
  • 4 GByte on-board acquisition memory for easy acquisition of long and complex signals

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