This test verifies that there is no jitter (within .5mm) reported by the device when three stationary contacts are placed on the device.

Test details

Associated requirements

Device.Input.PrecisionTouchpad.Precision.StationaryJitter System.Client.PrecisionTouchpad.PrecisionTouchpad

See the system hardware requirements.


Windows RT 8.1 Windows 8.1 x64 Windows 8.1 x86

Expected run time

~2 minutes






Running the test

Before you run the test, complete the test setup as described in the test requirements: Mouse or other Pointing Device Testing Prerequisites.

Three precision contacts are necessary for this test. For the test to pass, the contact must be able to rest on the device with no jitter. We strongly recommend that a robot or precision rig be used to execute this test.

  1. Carefully lower three contacts 11mm apart straight down anywhere on the touchpad.

  2. Wait ten seconds (use the timer in the upper-right corner of the Logo tool).

  3. Carefully raise the contacts.

    If no jitter is detected, the tool will pass the iteration and move on to the next iteration. Otherwise it will fail the test and give an error.

  4. Repeat for five iterations.


For troubleshooting information, see Troubleshooting Device.Input Testing.


[12] interaction too short: #####

The contacts were down for less than the required ten seconds. The number given is the duration of the contacts, measured in tenths of milliseconds.

Make sure you leave the contacts down for at least ten seconds.

[11] contact displacement too large: ###

Contacts moved or jitter farther than the allowed tolerance. The number given is the himetric distance moved, measured in hundredths of millimeters.

Make sure the contacts are completely stationary on the device.


More information

Command syntax


ptlogo.exe Test.StationaryJitterMultiple.json

Runs the test.


File list






Test. Test.StationaryJitterMultiple.json





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