How to Use the Precision Touch Testing Tool

How to Use the Precision Touch Testing Tool - 7To trace the curve, first align over the starting point, or points, of the motion. Oncethis is done, lock the motion of the x and y axes using the lock switches. Finally usethe handle attached to the actuator housing to rotate about the center of thecarriage.Adjusting the ActuatorsActuators are affixed to the carriage using magnets. To add an actuator, simply placeit into the concave underside of the carriage until it snaps into place. To remove anactuator, tilt it until it becomes free and pull it down and out of the carriage.The position of the actuator can be set in one-millimeter increments using the scaleon the carriage. This allows you, for example, to set 5 contacts at mutual center-tocenterdistances of 12 mm to execute the horizontal and vertical Input Separationtests.Running the TestsThere are three test jobs that require the use of precision tools in order to besuccessful (although it is not necessarily true that each case within a test job requiresprecision tools). In this section, we will discuss how to use the PT3 to pass these testjobs.Digitizer JitterSingle StationaryConfiguration• 1 actuator• Rotational stage lockedTo execute these test cases position the actuator over the green area and lock boththe x and y axes. Once this is done, pull the lever to make contact with the screen,and hold contact for at least 1 second. Repeat for each target until the test iscomplete.Multi StationaryConfiguration• 5 actuators• At least 20 mm between adjacent actuators• Rotational stage lockedTo execute this test, position all actuators over the green area and lock both the xand y axes. Once this is done, pull the lever to make contact with the screen, and holdcontact for at least 15 seconds. Repeat for each target until the test is complete.April 15, 2012© 2012 Microsoft. All rights reserved.

How to Use the Precision Touch Testing Tool - 8Note that bringing the actuators into contact too quickly may cause them to bounceon the screen, resulting in a failure. It is suggested that the actuators be broughtdown slowly and allowed to remain in contact for more than 15 seconds.Single MovingConfiguration• 1 actuator• Rotational stage lockedThere are four different cases: horizontal, vertical, diagonal (left to right) anddiagonal (right to left). Each case is run the same way.First, align the motion to the line rendered on the screen, following the instructions inthe Basic Use section of this paper. Position the actuator over the green target, suchthat the contact area of the actuator is inside the green area. Use the concentriccircles and crosshairs as a guide. Bring the actuator into contact with the screen atthe center of the green target and drag to the center of the yellow target. There is nominimum or maximum speed.Multi MovingConfiguration• 5 actuators• At least 20 mm between adjacent actuators• Rotational stage lockedThere are four different cases: horizontal, vertical, diagonal (left to right) anddiagonal (right to left). Each case is run the same way.First, align the motion to the lines rendered on the screen, following the instructionsin the Basic Use section of this document. Position the actuators over the greentargets, such that the contact area of each actuator is inside the green area of itscorresponding target. Use the concentric circles and crosshairs as a guide. Bring theactuators into contact with the screen at the centers of the green targets and drag tothe centers of the yellow targets. There is no minimum or maximum speed.Note that it is important that the R2-axis be locked to the 0° position, or it will bemore difficult to align the actuators to the targets.RadialConfiguration• 2 actuators• Each actuator placed 5 cm from the center of the carriageApril 15, 2012© 2012 Microsoft. All rights reserved.

How to Use the Precision Touch Testing Tool - 9• Rotational stage unlockedFirst, fix two actuators to the carriage at a distance of 5 cm from the center. Positioneach actuator above a green target and ensure that it is centered. Once this is done,rotate in the direction indicated by the lines rendered on the screen until the endpointsare reached.It is easiest to align the actuators and perform the motion if the base plate is rotatedsuch that the short side of the device faces the tester (typically, with the base plate inthe 90° or 270° position).Radial InsetConfiguration• 2 actuators• One actuator 3 cm from the center, the other 5 cm from the center• Rotational stage unlockedTo perform this test, attach two actuators to the carriage, each to one side of thecenter. The interior semi-circle has a radius of 3 cm, while the exterior semi-circle hasa radius of 5 cm. Similar to the Radial test, mind the direction indicated by thesoftware before beginning the motion.Input SeparationVertical/HorizontalConfiguration• 5 actuators• 4 actuators at a mutual distance of 12 mm• 5 th actuator 16 mm from its neighboring actuator• Rotational stage lockedAdjust the actuators such that the first four are mutually separated by a distance of12 mm. Fix the final and rightmost actuator 16 mm from its neighboring actuator.From this point, follow the instructions in “Multi Moving”.Diagonal• 5 actuators• Each actuator is 15 mm from either of its neighbors• Rotational stage lockedFollow the instructions in “Multi Moving”.April 15, 2012© 2012 Microsoft. All rights reserved.

How to Use the Precision Touch Testing Tool - 10ConvergeConfiguration• Converge attachment fixed in carriage• Rotational stage lockedIn this test, you will be presented with four cases, all identical except for placement.To execute this test, set the two actuators in the housing such that they are centeredon the two starting points. A lock is provided to ensure that the contacts do not slideto a wider position. Next, lower the actuators until they make solid contact with thescreen and immediately bring them together into their central position. Immediatelylift the actuators. The attachment is designed to bring the actuators to a distance of12 mm from center to center, so there is no need to estimate.Note that it is necessary to complete the gesture within five seconds of the firstactuator touching the screen.You will often find that it is easiest to complete this test by hand, due to the speedconstraints. It is recommended that you try this first, and if the test cannot be reliablypassed, to then transition to the Converge Attachment.Physical Input PositionAccuracyConfiguration• 1 actuator• Rotational stage lockedThis test can be completed only with the information contained in the section“Positioning an actuator and making contact”, but the following discussion will behelpful.The test has been partitioned to take advantage of the locking mechanism of the tool.It is intended that the y-axis be locked during each edge test, such that the actuatorhousing can slide along x-axis to be positioned over each target.The suggested method for performing a tap is to follow the instructions in“Positioning an actuator and making contact”, except to use the lever only to float ashort distance (about 1 cm) above the screen and tap on the top of the actuator todeliver the motion along the z-axis. The actuators are designed to permit this motion,and the springs will return them to a position above the screen for a moderatestrengthtap. Some practice is required to find the proper balance, but this methodwill be faster than using the lever to deliver contact in this test.April 15, 2012© 2012 Microsoft. All rights reserved.