M4x.66xx-x4: 16 bit, 1.25 giga samples/sec., x4-lane PXIe arbitrary waveform generator

Ultra fast signal replay: up to 1.25 giga samples/sec
High resolution 16 bit D/A converter
3U PXIe industry physical format is ideal for use in today's fastest PXIe mainframe systems.  
Fast Gen2 x4 lane PCI Express communication interface works through robust PXI connection
Choose from models with one to four channels (two channels max. on 1.25GS/s version)
Simultaneous signal generation on all channels
Output programmable up to to 2.5 V (2V ) into 50 Ohm, 5V (4 V ) into high-impedance loads  
65 MHz -3bB bandwidth smoothing filter, enabled by software command
Versatile trigger features, including fast auto re-arm
3 synchronous digital channels with multi-purpose I/O facility
Deep 2 giga sample (4 Gbyte) memory
FIFO (streaming) mode for giga byte data transfer speed from the PC
† 1.25 GS/sec models

M4x.6622 four channel arbitrary wavefrom generator card for PXI-express with introductory video link describing dynamic performance, operating modes and software interface

The M4x.66xx-x4 series arbitrary waveform generator (AWG) card modules use the robust industry standard PXIe interface, with x4-lane Gen2 ultra high-performance technology for signal upload from the computer in excess of 1.7 Gbytes/sec. The compact dual-width 3U module interface is designed for today's fast PXIe mainframe systems and fits PXIe and PXI hybrid slots Gen 1, 2 or 3. The combination of large on-board memory and ultra fast data transfer allows a short or long and complex signal to be generated, whichever is desired. The PXIe interface and the three-quarter length PCB are designed to be compatible to many computer and chassis combinations. The latest D/A converter design is utilised, providing up to 1.25 giga sample per second updates on the output channels. Updates are simultaneous and resolution high at 16 bits. This results in an exceptional combination of speed and resolution without the penalty of low signal amplitude. The output produces a maximum output swing of +/- 2.5 volts into 50 Ohms , +/- 5 volts into high impedance at 625 mega samples per second and only a little less at over a GHz! A software selectable 65Mhz -3bB bandwidth filter can be enabled through software command to smooth the output signal. Versatile triggering allows full control of signal generation periods. The trigger source can either of two front panel trigger inputs, any of eight PXI trigger lines, or the PXI star trigger. This ensures zero phase difference on signals produced across multiple D/A channels, or indeed multiple cards in the same PXIe chassis, utilising the chassis bus clock and trigger.

Versatile Windows / Linux drivers provide a means of programming the AWG in text code, MATLAB, LabVIEW and LabWindowsCVI. Whilst the cards have been designed using the latest technology, they are still software compatible with the drivers from earlier Spectrum waveform generator cards. Hence existing customers can use the same software they developed for an earlier Spectrum AWG card, with the M4x version, using just a few code tweaks. Extensive support for text programming includes Visual C++, Borland C++, Gnu C++, LabVIEW, MATLAB, Visual Basic, VB.NET, C#, J# and Delphi code.

Standard features

  • Single Shot output and repeated outputs from the card's memory
  • FIFO mode for streaming signal data direct from the PC more info
  • Dedicated connection for external trigger input, programmable in 1 mV (analogue) steps.
  • Dedicated connection for external clock input, or to output the cards sampling clock
  • Three digital connections configurable as asynchronous or synchronous to sampling, or use as trigger output, or status lines arm & run
  • Positive and negative edge trigger more info
  • Auto re-arm on edge trigger more info
  • High and low level trigger more info
  • Window triggermore info
  • AND/OR multiple trigger event combinations
  • Programmable delay until trigger recognition
  • SBench 6.x windows software
  • Memory: 2 Giga sample (4 Gbyte)
  • Output impedance 50 Ohm

Enhancements included more info

  • Multiple Replay - multiple sequential signal replay using fast repetitive triggers, auto re-arm
  • Gated Replay - signal replay length controlled by trigger level
  • Sequence Replay Mode - programmable loop, jump to a different waveform on an event (e.g external trigger), dynamic update of waveform data

Product range overview

  max sample rate  
name 1 channel 2 channel 4 channel -3bB bandwidth
M4x.6630-x8 1.25 GS/s     up to 400 MHz
M4x.6631-x8 1.25 GS/s 1.25 GS/s   up to 400 MHz
M4x.6620-x8 625 MS/s     up to 200 MHz
M4x.6621-x8 625 MS/s 625 MS/s   up to 200 MHz
M4x.6622-x8 625 MS/s 625 MS/s 625 MS/s up to 200 MHz


  • Standard drivers Windows XP / Vista / Windows 7, 8, 10 and Linux
  • SBench 6.x signal generation and processing software for Windows / Linux
  • Drivers for LabVIEW and LabWindows/CVI. (VEE and Dasylab by special order)
  • Driver for MATLAB


pdf link [PDF data sheet]
pdf link [PDF manual]

[SBench 6.x] Windows / Linux download allows testing of SBench functionality with or without hardware.

More information can be easily requested from our catalogues and pricing web page, or feel free to contact Dataquest Solutions directly.

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Spectrum GmbH and DataQuest Solutions 10.01.16
Last modified by DataQuest Solutions Ltd 07.03.19