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ChannelStretch™ Data Acquisition (DAQ) Technology

Synchronous channel expansion that's as easy as plugging in another device

  • Wouldn't it be EASY to simply connect multiple, low-cost devices to one PC and have them acquire data synchronously across units?
  • Wouldn't it be PRODUCTIVE to acquire dozens of analog and digital channels across multiple instruments to one application and file, just as though from a single device?
  • Wouldn't it be FLEXIBLE to easily scale measurement capacity up or down at will as your requirements change?

Convenient, productive, and flexible describe the ChannelStretch™ approach to scaling analog and digital channel capacity in data acquisition (DAQ) applications. It is novel technology developed by DATAQ Instruments that allows multiple data acquisition instruments to synchronize to within 10 micro-seconds between any two units. And, it's easy to implement and manage.

Connect up to 16 devices with the same model number

Up and Running in Three Easy Steps

ChannelStretch™ is as easy to implement as 1-2-3:

  1. Get a USB hub or Ethernet switch and 2-16 supported data acquisition devices that share the same model or series number. If you run out of ports, simply cascade more hubs/switches until you have enough.
  2. Connect your data acquisition instruments to the hub/switch ports.
  3. Use software you designed or our ready-to-run WinDaq software and begin acquiring up to 128 analog channels and 112 digital ports at a maximum sample throughput rate of at least 480 kHz.


Use the table below to determine compatibility with other models:

Model DI-1120 DI-2008 DI-2108-P DI-4108-U DI-4108-E DI-4208-U DI-4208-E DI-4718B-U DI-4718B-E DI-4730*
DI-1120 check     check   check   check   check
DI-2008   check                
DI-2108-P     check              
DI-4108-U check     check   check   check   check
DI-4108-E         check   check   check check
DI-4208-U check     check   check   check   check
DI-4208-E         check   check   check check
DI-4718B-U check     check   check   check   check
DI-4718B-E         check   check   check check
DI-4730* check     check check check check check check check

For example, DI-1120, DI-4108-U, DI-4208-U, and DI-4718B-U models can all be synchronized, but they cannot be synchronized with DI-2008 or DI-2108-P models or any Ethernet models.

* Requires use of the same interface.

Please note: Unlock code required per device for synchronization. Sync operation requires all firmware to be at the same level.

The WinDaq Software AdvantageWinDaq Data Acquisition Software

You can use your own software to implement ChannelStretch™, but nothing beats the ease and speed of using our WinDaq software:

  • Regardless of the number of synchronized devices or the number of enabled channels WinDaq supports a maximum throughput sample rate of at least 480 kHz simultaneously to the real time display and the disk for storage.
  • All enabled channels across devices acquire to a single WinDaq file as though they originate from a single device, simplifying data review and interpretation.
  • WinDaq graphically displays in real time anywhere from 1 to 32 channels at a time, and easily cycles through remaining channels in 1- to 32-channel groups.
  • WinDaq's ready-to-run, point-and-click GUI makes setup fast and easy.

Refer to the detailed specifications page of supported hardware for synchronization conditions and details.