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Windows Touch Digitizer Jitter Test

This test verifies that a Windows Touch device does not exceed the allowable amount of jitter (a maximum of 1 millimeter over 10 millimeters of travel).

Test details

 

Associated requirements

Device.Digitizer.Touch.DigitizerJitter
Device.Digitizer.Touch.HIDCompliantFirmware

See the device hardware requirements.

Platforms

Windows RT (ARM-based)
Windows 8 (x64)
Windows 8 (x86)
Windows RT 8.1
Windows 8.1 x64
Windows 8.1 x86

Expected run time

~4 minutes

Categories

Certification

Type

Manual

Running the test

Before you run the test, complete the test setup as described in the test requirements: Windows Touch Testing Prerequisites.

Clean input is important throughout the system and across applications. Whether a user is performing a hold gesture to learn more about a user interface (UI) element, playing a game, or holding a key on the software keyboard, this fidelity allows software to correctly interpret a user's intention and provide an optimal touch experience.

This test presents twelve distinct scenarios that examine jitter during static contact, linear motion, and radial motion. Most of these interactions require the use of assistive technology.

In addition to validating that the jitter specification is respected, this test verifies that HID reports conform to the HID protocol that is described in Windows Pointer Device Data Delivery Protocol and defined in the HID I2C v1.0 Protocol Specification.

Troubleshooting

More information

Command syntax

 

Command option Description

Logo3.exe -config DigitizerJitter.json

Runs the test.

File list

 

File Location

DigitizerJitter.json

<testbinroot>\digitizer\Win8Touch

Logo3.exe

<testbinroot>\digitizer\Win8Touch

See Also

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