Output sequencer

The sequencer controls up to 8 waveform and 16 digital outputs from a CED 1401 interface. A graphical editor gives a user-friendly display of the selected outputs for fast and easy creation of stimulus protocols. There is also a text editor which gives direct access to the sequencer instruction code for more complex output and control requirements.

  • Drag-and-drop pulses from a palette onto output tracks in the editor
  • Modify pulse timing and amplitudes quickly and easily
  • Use digital pulses and pulse trains to trigger external devices
  • Generate variable amplitude square pulses, sine waves and voltage ramps to control external equipment
  • Combine pulses such as square waves and ramps for ramp-and-hold
  • Control variable intensity stimuli such as temperature, current and voltage

Setup of waveform and digital outputs using the
graphical sequence editor

  • Output user-defined waveforms, pre-recorded and imported data for control and stimulation
  • Define pulse protocols as separate sections in the output sequencer and link them together for automated stimulus sequencing
  • Copy pulse information between sections to quickly set up a series of similar stimulus protocols
  • Make use of control statements such as loops and branches and randomise delays and stimuli
  • Record digital input states directly to a marker channel and generate codes to flag events
  • Read digital input and sampled waveform values directly and branch on the result if a given condition is met
Click to view video

This video tutorial gives an introduction to the graphical editor


The graphical sequence editor in Spike2 offers a user-friendly interface for the built-in output sequencer. This video tutorial gives an introduction to the graphical editor and how to use it to setup a range of outputs for use during sampling.

Cambridge Electronic Design Limited

Registered in England: 972132

Registered office:

  • Cambridge Electronic Design Limited,
  • Technical Centre,
  • 139 Cambridge Road,
  • Milton,
  • Cambridge CB24 6AZ

VAT: GB 214 2617 96

Producer Registration number: WEE/BD0050TZ

Terms and Conditions of Sale

For our US customers, we can provide tax form W-8BEN, that identifies us as a UK company.

DUNS: 219151016
NAICS: 423490
Commodity codes
Hardware: 84716070
Software: 85234945

By email:


By post:
  • Cambridge Electronic Design Limited,
  • Technical Centre,
  • 139 Cambridge Road,
  • Milton,
  • Cambridge CB24 6AZ
By telephone:

(Int.+44) (0)1223 420186

From North America (Toll Free):

1 800 345 7794


Privacy policy

CED, through this site, does two things that relate to privacy. We would like to explain them.

Emails from down-loads

We offer free down-loads of many files on our site, from test programs to complete install files for updated versions of major packages like Spike2 and Signal.

When customers wish to take a down-load of a major package, we ask a few questions, including their name, email address, the serial number of the software for which they seek an upgrade and whether they would like an automatic email whenever we update the product. This information is emailed back to CED when they access the final down-load screen. Within this email, your browser transmits the type and version of browser you are using, and the screen resolution you are running.

The reasons why we take and keep this information are that it is useful for our software development team to know who has taken the latest versions, and it is useful for our web site development team to know which browsers people are using to view our site, and what resolution they have their screens set to.


When people down-load a major package, we try to write a cookie, a small file in your computer, that records your name, serial number of the software package, and the version you are down-loading. These files have a lifetime of one year.

The reasons for storing this information are firstly that if you ask for another down-load some other time, your details are read from the cookie and are pre-written into the form, to save you looking them up again. The other reason is that next time you access our site, your browser looks through your CED cookies and compares the versions down-loaded with the latest version numbers read from our site. If there is a later version of a product you have already down-loaded, we tell you on the home page screen, so you know that it is worth going to the down-load page again.

None of this information is ever given to anyone outside CED. ×