# iSCAN and PsychToolBox Communication

**URL:** <https://psychtoolbox.discourse.group/t/iscan-and-psychtoolbox-communication/5741>\
**Category:** Hardware\
**Created:** [July 29, 2025, 7:18pm UTC](https://psychtoolbox.discourse.group/t/iscan-and-psychtoolbox-communication/5741 "2025-07-29T19:18:50Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![chauano](https://avatars.discourse-cdn.com/v4/letter/c/b487fb/32.png) [@chauano](https://psychtoolbox.discourse.group/u/chauano)\
**Post date:** [July 29, 2025, 7:18pm UTC](https://psychtoolbox.discourse.group/t/iscan-and-psychtoolbox-communication/5741/1 "2025-07-29T19:18:50Z")

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I am currently using an iSCAN ETL 200 to track eye movements with a task in Psychtoolbox-3. There is a signal shown in the Psychtoolbox control screen, as well as a signal shown in the iSCAN program. However, I am confused about how to calibrate the eye signal with the Psychtoolbox. I use the Psychtoolbox calibration with the 3x3 blue dot calibration. I was wondering if there are any guides or manuals that are out there to help me with setting up an iSCAN with Psychtoolbox.