# Audio Visual & Display Screen Settings

## Electronic Display Screen Specifications

The voting system features three electronic display screens - on VxScan, on VxMarkScan, and an identical screen on the laptops for VxAdmin and VxCentralScan. All screens are in conformance with 8.1-A's requirements for electronic display screens.

* All screens include anti-glare technology to prevent distinct virtual images from appearing on the screen (8.1-A.1.a)
* All screens surpass the 10:1 minimum contrast ratio under 500 lux (8.1-A.1.b)
* All screens surpass the 12" minimum diagonal display size specified in 8.1-A.2.a, which itself surpasses the 7.9" minimum diagonal display size specified in 8.1-A.3a.
* All screens surpass the 1920 x 1080 minimum display resolution specified in 8.1-A.2b, which itself surpasses the 1024 x 768 minimum display resolution specified in 8.1-A.3.b.

<table><thead><tr><th width="167">Device</th><th width="159">Display Diagonal</th><th>Resolution</th><th width="108">Contrast</th><th>Max. Brightness</th></tr></thead><tbody><tr><td>VxScan</td><td>15.6"</td><td>1920 x 1080</td><td>1,000:1</td><td>310 nits</td></tr><tr><td>VxMarkScan</td><td>15.6"</td><td>1080 x 1920</td><td>700:1</td><td>220 nits</td></tr><tr><td>Central Laptops</td><td>14"</td><td>1920 x 1200</td><td>1,330:1</td><td>300 nits</td></tr></tbody></table>

## Eliminating Hazards

All audio and video devices are tested to be in accordance with the requirements of IEC/UL 62368-1 (8.1-K).

<table><thead><tr><th width="167">Device</th><th>Test Report</th></tr></thead><tbody><tr><td>VxScan</td><td><a href="https://github.com/votingworks/docs-vxsuite-v4/blob/main/quality-assurance/testing/external-testing/Eurofins%20Safety%20Report%20-%2001%20EE%20132954_62368-1.pdf">UL 62368-1 Test Report</a></td></tr><tr><td>VxMarkScan</td><td>Report Available on Request</td></tr><tr><td>Central Laptops</td><td><a href="https://github.com/votingworks/docs-vxsuite-v4/blob/main/hardware-assets/cots-documentation/central-system/hp-elitebook-840-14in-g11/hp-elitebook-840-14in-g11-datasheet.pdf">UL 62368-1 certified</a></td></tr></tbody></table>

## Audio-Visual Settings

The audio-visual settings for the voter experience are described in the [system-overview](https://docs.voting.works/vxsuite-tdp-v4/system-overview "mention"):

* [vxmarkscan-function](https://docs.voting.works/vxsuite-tdp-v4/system-overview/vxmarkscan-function "mention")
* [vxscan-function](https://docs.voting.works/vxsuite-tdp-v4/system-overview/vxscan-function "mention")&#x20;