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

For troubleshooting information, see Troubleshooting Device.Digitizer Testing and How to run the Windows HCK Tests for Touch and Pen Devices.

More information

Command syntax

Command optionDescription

Logo3.exe -config DigitizerJitter.json

Runs the test.

 

File list

FileLocation

DigitizerJitter.json

<testbinroot>\digitizer\Win8Touch

Logo3.exe

<testbinroot>\digitizer\Win8Touch

 

Related topics

How to run the Windows HCK Tests for Touch and Pen Devices

 

 

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