Latency - Touch Down
Verifies that the device is able to report first contact down within the required latency window.
RA Tool with Precision Touchpad modifications
See detailed test instructions at How to measure Touch Down Latency by using an Acoustic Measurement Tool.
Use Ptaudiotouch.exe instead of the touch executable.
Only 50 taps during the collection phase are required for this class of device.
This test has no permitted tolerance, therefore a recorded average touch-down latency <= 25.0ms will result in a pass.