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 |
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 option | Description |
|---|---|
Logo3.exe -config DigitizerJitter.json |
Runs the test. |
File list
| File | Location |
|---|---|
DigitizerJitter.json |
<testbinroot>\digitizer\Win8Touch |
Logo3.exe |
<testbinroot>\digitizer\Win8Touch |
Related topics
How to run the Windows HCK Tests for Touch and Pen Devices