M3i.41xx: 14 bit PCI / PCI-X / PCI-Express signal recorder sampling up to 400 MS/s

M3i logo
Up to 400 MSamples/sec on one channel
Up to 250 MSamples/sec on two channels
Simultaneous sampling on all channels
6 input ranges from 200 mV to 10 V (buffered path) more info
Versatile recording trigger options, including auto re-arm
2 synchronous digital channels with multi-purpose I/O facility
Up to 1 GSample (2 GByte) memory
FIFO (streaming) mode for high-speed data transfer to the PC

M3i.41xx image

Very similar to the M2i.32xx range but with a 14-bit converter, this card is well applied to applications requiring more resolution, the 6 input ranges; +/-200mV to +/-10V further enhancing this capability. The range wide bandwidth input section, anti-aliasing filter and versatile triggering options (with time stamp), make this a card suitable for many applications such as ultrasound, radar and signal analysis in telecommunications.

Combine with further cards of different functionality in the Spectrum M3i range to add waveform generation and digital I/O, or to simply to increase the number of synchronised analogue channels.

Standard Features

  • FIFO mode more info
  • 10-bit resolution analogue channel trigger.
  • Dedicated connection for external trigger input, programmable in 1 mV (analogue) steps, or for TTL
  • Dedicated connection for external TTL clock input, or to output the cards sampling clock
  • Two general purpose digital I/O connectors configurable as asynchronous or synchronous to sampling, or as extra TTL trigger lines
  • 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
  • Deep standard memory: 256 MSample (512 MByte)
  • Selectable input impedance to 50 Ohm or 1 MOhm
  • 20MHz bandwidth (anti-aliasing) filter

Enhancements included More information on enhancements

  • ABA mode - Variable sampling speed, jump to fast capture on trigger
  • Multiple Recording - multiple sequential signal capture using fast repetitive triggers, auto re-arm
  • Time stamp - records the time of each trigger event

Special (cost) options More information on enhancements

  • BASEXIO - Extra asynchronous digital I/O with additional trigger lines
  • Memory upgrade to 512MSample or 1 GSample
  • Threaded SMA signal connectors instead of SMB on card end plate
  • Synchronisation Star Hub - synchronise up to 8 cards
  • Remote Server - programme, control and monitor Spectrum M2i, M3i or M4i cards in a remote location

Product range overview


max sample rate

name 1 channel 2 channel
M3i.4110 100 MS/s  
M3i.4111 100 MS/s 100 MS/s
M3i.4120 250 MS/s  
M2i.4121 250 MS/s 250 MS/s
M3i.4140 400 MS/s  
M2i.4142 400 MS/s 250 MS/s
PCI-Express versions simply suffixed -exp, e.g. M3i.4121-exp

Pre-Amplifier modules

Recording very small signals? High frequency wide bandwidth pre-amplifiers are available to enhance the gain range of the M3i range.
Click on the image below for more information.

SPA_amplifier module - link to information page


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


pdf link to m3i datasheet [PDF data sheet]
pdf link to m3i manual [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
Last modified by Dataquest Solutions Ltd. 15.05.18