How to Enable and Calibrate Spanned Display Mode in the Elo Windows Multi-Touch Driver

Audience: Public / Elo Customers, IT Administrators, Video Wall Builders & Integrators

Article Type: Multi-Display Configuration & Touch Calibration Guide

The following instructions explain how to configure, map, and calibrate touch coordinates in Spanned Display video mode (e.g., video walls, multi-monitor canvas stitching via NVIDIA Surround, AMD Eyefinity, or Matrox multi-display adapters) using the Elo Multi-Touch Driver for Windows.

ℹ Driver Detection Requirement: The Spanned display mode option is located in the Common Settings tab of the Elo Windows driver. This option is active only when Windows and your graphics driver present the physical screens as a single consolidated "spanned" desktop canvas. If the GPU driver is running in standard Extended Desktop mode, this setting will appear grayed out.

Spanned display mode setting in Common Settings tab of EloConfig

Enabling and Calibrating Spanned Mode

⚠️ Prerequisite: To successfully calibrate multi-screen touch coordinates across a spanned canvas, all connected physical touchmonitors must share the exact same orientation (e.g., all Landscape or all Portrait).

Open EloConfig, navigate to the Common Settings tab, and select the Spanned display mode checkbox.
Navigate back to the main EloConfig tab and click the Calibrate Touch Screens button. The Spanned Configuration setup dialog will open.
Enter the total number of Rows, Columns, and the Monitor Orientation corresponding to your physical layout grid:
Click OK and follow the on-screen calibration targets across each physical monitor in the video wall.

Enforcing 3-Point Driver Calibration (EloOptions.ini)

To ensure the driver properly maps coordinate bounding boxes across non-standard virtual resolutions, modify the EloOptions.ini configuration file to enforce a direct 3-point driver calibration routine:

[Calibration]
DriverCalibration = 1

Modifying DriverCalibration in EloOptions.ini file

How to Apply the Configuration

Option A (Prior to Driver Installation): Extract the downloaded driver package, open EloOptions.ini from the root extraction folder, set DriverCalibration = 1, save the file, run Setup.exe, and calibrate the displays.
Option B (After Driver Installation): Navigate to C:\Program Files\Elo Touch Solutions\, open EloOptions.ini, change DriverCalibration = 1, save changes, and trigger recalibration through EloConfig.

⚠️ Administrator Privileges: When modifying EloOptions.ini within the Program Files directory, launch your text editor (e.g., Notepad) using Run as administrator to allow file write permissions.

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Welcome to Elo Support

Spanned Display Mode in Elo Windows Touch Driver - Driver and FW Docs

How to Enable and Calibrate Spanned Display Mode in the Elo Windows Multi-Touch Driver

Enabling and Calibrating Spanned Mode

Enforcing 3-Point Driver Calibration (EloOptions.ini)

How to Apply the Configuration

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